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annotate dwt/graphics/Image.d @ 81:e10cbfc977d2
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author | Frank Benoit <benoit@tionex.de> |
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date | Wed, 06 Feb 2008 15:12:11 +0100 |
parents | 0405e18fec7f |
children | 04d34191e2e9 |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2007 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
23 | 10 * Port to the D programming language: |
11 * Frank Benoit <benoit@tionex.de> | |
22
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12 *******************************************************************************/ |
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13 module dwt.graphics.Image; |
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14 |
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15 |
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16 import dwt.DWT; |
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17 import dwt.DWTError; |
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18 import dwt.DWTException; |
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19 import dwt.internal.gdip.Gdip; |
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20 import dwt.internal.win32.OS; |
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21 |
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22 import dwt.graphics.Color; |
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23 import dwt.graphics.Device; |
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24 import dwt.graphics.Drawable; |
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25 import dwt.graphics.GC; |
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26 import dwt.graphics.GCData; |
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27 import dwt.graphics.ImageData; |
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28 import dwt.graphics.PaletteData; |
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29 import dwt.graphics.RGB; |
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30 import dwt.graphics.Rectangle; |
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31 import dwt.graphics.Resource; |
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32 |
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33 |
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34 import dwt.dwthelper.InputStream; |
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35 import dwt.dwthelper.utils; |
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36 |
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37 import tango.text.convert.Format; |
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38 //import tango.stdc.string; |
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39 //import tango.stdc.stringz; |
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40 |
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41 /** |
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42 * Instances of this class are graphics which have been prepared |
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43 * for display on a specific device. That is, they are ready |
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44 * to paint using methods such as <code>GC.drawImage()</code> |
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45 * and display on widgets with, for example, <code>Button.setImage()</code>. |
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46 * <p> |
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47 * If loaded from a file format that supports it, an |
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48 * <code>Image</code> may have transparency, meaning that certain |
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49 * pixels are specified as being transparent when drawn. Examples |
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50 * of file formats that support transparency are GIF and PNG. |
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51 * </p><p> |
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52 * There are two primary ways to use <code>Images</code>. |
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53 * The first is to load a graphic file from disk and create an |
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54 * <code>Image</code> from it. This is done using an <code>Image</code> |
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55 * constructor, for example: |
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56 * <pre> |
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57 * Image i = new Image(device, "C:\\graphic.bmp"); |
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58 * </pre> |
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59 * A graphic file may contain a color table specifying which |
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60 * colors the image was intended to possess. In the above example, |
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61 * these colors will be mapped to the closest available color in |
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62 * DWT. It is possible to get more control over the mapping of |
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63 * colors as the image is being created, using code of the form: |
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64 * <pre> |
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65 * ImageData data = new ImageData("C:\\graphic.bmp"); |
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66 * RGB[] rgbs = data.getRGBs(); |
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67 * // At this point, rgbs contains specifications of all |
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68 * // the colors contained within this image. You may |
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69 * // allocate as many of these colors as you wish by |
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70 * // using the Color constructor Color(RGB), then |
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71 * // create the image: |
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72 * Image i = new Image(device, data); |
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73 * </pre> |
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74 * <p> |
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75 * Applications which require even greater control over the image |
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76 * loading process should use the support provided in class |
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77 * <code>ImageLoader</code>. |
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78 * </p><p> |
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79 * Application code must explicitly invoke the <code>Image.dispose()</code> |
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80 * method to release the operating system resources managed by each instance |
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81 * when those instances are no longer required. |
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82 * </p> |
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83 * |
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84 * @see Color |
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85 * @see ImageData |
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86 * @see ImageLoader |
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87 */ |
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88 |
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89 public final class Image : Resource, Drawable { |
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90 |
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91 /** |
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92 * specifies whether the receiver is a bitmap or an icon |
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93 * (one of <code>DWT.BITMAP</code>, <code>DWT.ICON</code>) |
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94 * <p> |
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95 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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96 * public API. It is marked public only so that it can be shared |
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97 * within the packages provided by DWT. It is not available on all |
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98 * platforms and should never be accessed from application code. |
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99 * </p> |
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100 */ |
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101 public int type; |
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102 |
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103 /** |
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104 * the handle to the OS image resource |
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105 * (Warning: This field is platform dependent) |
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106 * <p> |
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107 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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108 * public API. It is marked public only so that it can be shared |
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109 * within the packages provided by DWT. It is not available on all |
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110 * platforms and should never be accessed from application code. |
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111 * </p> |
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112 */ |
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113 public HGDIOBJ handle; |
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114 |
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115 /** |
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116 * specifies the transparent pixel |
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117 */ |
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118 int transparentPixel = -1; |
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119 |
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120 /** |
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121 * the GC which is drawing on the image |
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122 */ |
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123 GC memGC; |
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124 |
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125 /** |
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126 * the alpha data for the image |
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127 */ |
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128 byte[] alphaData; |
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129 |
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130 /** |
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131 * the global alpha value to be used for every pixel |
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132 */ |
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133 int alpha = -1; |
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134 |
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135 /** |
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136 * the image data used to create this image if it is a |
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137 * icon. Used only in WinCE |
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138 */ |
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139 ImageData data; |
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140 |
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141 /** |
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142 * width of the image |
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143 */ |
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144 int width = -1; |
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145 |
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146 /** |
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147 * height of the image |
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148 */ |
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149 int height = -1; |
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150 |
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151 /** |
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152 * specifies the default scanline padding |
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153 */ |
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154 static const int DEFAULT_SCANLINE_PAD = 4; |
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155 |
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156 /** |
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157 * Prevents uninitialized instances from being created outside the package. |
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158 */ |
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159 this () { |
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160 } |
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161 |
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162 /** |
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163 * Constructs an empty instance of this class with the |
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164 * specified width and height. The result may be drawn upon |
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165 * by creating a GC and using any of its drawing operations, |
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166 * as shown in the following example: |
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167 * <pre> |
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168 * Image i = new Image(device, width, height); |
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169 * GC gc = new GC(i); |
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170 * gc.drawRectangle(0, 0, 50, 50); |
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171 * gc.dispose(); |
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172 * </pre> |
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173 * <p> |
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174 * Note: Some platforms may have a limitation on the size |
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175 * of image that can be created (size depends on width, height, |
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176 * and depth). For example, Windows 95, 98, and ME do not allow |
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177 * images larger than 16M. |
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178 * </p> |
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179 * |
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180 * @param device the device on which to create the image |
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181 * @param width the width of the new image |
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182 * @param height the height of the new image |
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183 * |
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184 * @exception IllegalArgumentException <ul> |
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185 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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186 * <li>ERROR_INVALID_ARGUMENT - if either the width or height is negative or zero</li> |
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187 * </ul> |
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188 * @exception DWTError <ul> |
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189 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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190 * </ul> |
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191 */ |
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192 public this(Device device, int width, int height) { |
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193 if (device is null) device = Device.getDevice(); |
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194 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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195 init(device, width, height); |
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196 if (device.tracking) device.new_Object(this); |
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197 } |
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198 |
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199 /** |
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200 * Constructs a new instance of this class based on the |
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201 * provided image, with an appearance that varies depending |
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202 * on the value of the flag. The possible flag values are: |
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203 * <dl> |
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204 * <dt><b>IMAGE_COPY</b></dt> |
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205 * <dd>the result is an identical copy of srcImage</dd> |
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206 * <dt><b>IMAGE_DISABLE</b></dt> |
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207 * <dd>the result is a copy of srcImage which has a <em>disabled</em> look</dd> |
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208 * <dt><b>IMAGE_GRAY</b></dt> |
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209 * <dd>the result is a copy of srcImage which has a <em>gray scale</em> look</dd> |
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210 * </dl> |
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211 * |
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212 * @param device the device on which to create the image |
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213 * @param srcImage the image to use as the source |
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214 * @param flag the style, either <code>IMAGE_COPY</code>, <code>IMAGE_DISABLE</code> or <code>IMAGE_GRAY</code> |
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215 * |
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216 * @exception IllegalArgumentException <ul> |
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217 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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218 * <li>ERROR_NULL_ARGUMENT - if srcImage is null</li> |
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219 * <li>ERROR_INVALID_ARGUMENT - if the flag is not one of <code>IMAGE_COPY</code>, <code>IMAGE_DISABLE</code> or <code>IMAGE_GRAY</code></li> |
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220 * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> |
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221 * </ul> |
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222 * @exception DWTException <ul> |
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223 * <li>ERROR_INVALID_IMAGE - if the image is not a bitmap or an icon, or is otherwise in an invalid state</li> |
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224 * <li>ERROR_UNSUPPORTED_DEPTH - if the depth of the image is not supported</li> |
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225 * </ul> |
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226 * @exception DWTError <ul> |
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227 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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228 * </ul> |
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229 */ |
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230 public this(Device device, Image srcImage, int flag) { |
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231 if (device is null) device = Device.getDevice(); |
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232 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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233 this.device = device; |
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234 if (srcImage is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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235 if (srcImage.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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236 Rectangle rect = srcImage.getBounds(); |
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237 switch (flag) { |
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238 case DWT.IMAGE_COPY: { |
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239 this.type = srcImage.type; |
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240 switch (type) { |
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241 case DWT.BITMAP: |
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242 /* Get the HDC for the device */ |
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243 auto hDC = device.internal_new_GC(null); |
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244 |
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245 /* Copy the bitmap */ |
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246 auto hdcSource = OS.CreateCompatibleDC(hDC); |
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247 auto hdcDest = OS.CreateCompatibleDC(hDC); |
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248 auto hOldSrc = OS.SelectObject(hdcSource, srcImage.handle); |
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249 BITMAP bm; |
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250 OS.GetObject(srcImage.handle, BITMAP.sizeof, &bm); |
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251 handle = OS.CreateCompatibleBitmap(hdcSource, rect.width, bm.bmBits !is null ? -rect.height : rect.height); |
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252 if (handle is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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253 auto hOldDest = OS.SelectObject(hdcDest, handle); |
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254 OS.BitBlt(hdcDest, 0, 0, rect.width, rect.height, hdcSource, 0, 0, OS.SRCCOPY); |
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255 OS.SelectObject(hdcSource, hOldSrc); |
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256 OS.SelectObject(hdcDest, hOldDest); |
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257 OS.DeleteDC(hdcSource); |
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258 OS.DeleteDC(hdcDest); |
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259 |
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260 /* Release the HDC for the device */ |
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261 device.internal_dispose_GC(hDC, null); |
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262 |
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263 transparentPixel = srcImage.transparentPixel; |
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264 alpha = srcImage.alpha; |
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265 if (srcImage.alphaData !is null) { |
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266 alphaData = new byte[srcImage.alphaData.length]; |
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267 System.arraycopy(srcImage.alphaData, 0, alphaData, 0, alphaData.length); |
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268 } |
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269 break; |
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270 case DWT.ICON: |
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271 if (OS.IsWinCE) { |
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272 init(device, srcImage.data); |
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273 } else { |
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274 handle = OS.CopyImage(srcImage.handle, OS.IMAGE_ICON, rect.width, rect.height, 0); |
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275 if (handle is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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276 } |
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277 break; |
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278 default: |
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279 DWT.error(DWT.ERROR_INVALID_IMAGE); |
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280 } |
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281 if (device.tracking) device.new_Object(this); |
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282 return; |
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283 } |
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284 case DWT.IMAGE_DISABLE: { |
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285 ImageData data = srcImage.getImageData(); |
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286 PaletteData palette = data.palette; |
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287 RGB[] rgbs = new RGB[3]; |
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288 rgbs[0] = device.getSystemColor(DWT.COLOR_BLACK).getRGB(); |
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289 rgbs[1] = device.getSystemColor(DWT.COLOR_WIDGET_NORMAL_SHADOW).getRGB(); |
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290 rgbs[2] = device.getSystemColor(DWT.COLOR_WIDGET_BACKGROUND).getRGB(); |
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291 ImageData newData = new ImageData(rect.width, rect.height, 8, new PaletteData(rgbs)); |
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292 newData.alpha = data.alpha; |
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293 newData.alphaData = data.alphaData; |
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294 newData.maskData = data.maskData; |
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295 newData.maskPad = data.maskPad; |
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296 if (data.transparentPixel !is -1) newData.transparentPixel = 0; |
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297 |
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298 /* Convert the pixels. */ |
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299 int[] scanline = new int[rect.width]; |
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300 int[] maskScanline = null; |
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301 ImageData mask = null; |
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302 if (data.maskData !is null) mask = data.getTransparencyMask(); |
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303 if (mask !is null) maskScanline = new int[rect.width]; |
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304 int redMask = palette.redMask; |
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305 int greenMask = palette.greenMask; |
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306 int blueMask = palette.blueMask; |
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307 int redShift = palette.redShift; |
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308 int greenShift = palette.greenShift; |
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309 int blueShift = palette.blueShift; |
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310 for (int y=0; y<rect.height; y++) { |
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311 int offset = y * newData.bytesPerLine; |
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312 data.getPixels(0, y, rect.width, scanline, 0); |
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313 if (mask !is null) mask.getPixels(0, y, rect.width, maskScanline, 0); |
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314 for (int x=0; x<rect.width; x++) { |
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315 int pixel = scanline[x]; |
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316 if (!((data.transparentPixel !is -1 && pixel is data.transparentPixel) || (mask !is null && maskScanline[x] is 0))) { |
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317 int red, green, blue; |
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318 if (palette.isDirect) { |
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319 red = pixel & redMask; |
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320 red = (redShift < 0) ? red >>> -redShift : red << redShift; |
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321 green = pixel & greenMask; |
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322 green = (greenShift < 0) ? green >>> -greenShift : green << greenShift; |
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323 blue = pixel & blueMask; |
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324 blue = (blueShift < 0) ? blue >>> -blueShift : blue << blueShift; |
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325 } else { |
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326 red = palette.colors[pixel].red; |
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327 green = palette.colors[pixel].green; |
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328 blue = palette.colors[pixel].blue; |
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329 } |
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330 int intensity = red * red + green * green + blue * blue; |
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331 if (intensity < 98304) { |
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332 newData.data[offset] = cast(byte)1; |
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333 } else { |
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334 newData.data[offset] = cast(byte)2; |
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335 } |
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336 } |
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337 offset++; |
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338 } |
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339 } |
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340 init (device, newData); |
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341 if (device.tracking) device.new_Object(this); |
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342 return; |
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343 } |
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344 case DWT.IMAGE_GRAY: { |
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345 ImageData data = srcImage.getImageData(); |
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346 PaletteData palette = data.palette; |
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347 ImageData newData = data; |
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348 if (!palette.isDirect) { |
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349 /* Convert the palette entries to gray. */ |
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350 RGB [] rgbs = palette.getRGBs(); |
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351 for (int i=0; i<rgbs.length; i++) { |
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352 if (data.transparentPixel !is i) { |
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353 RGB color = rgbs [i]; |
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354 int red = color.red; |
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355 int green = color.green; |
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356 int blue = color.blue; |
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357 int intensity = (red+red+green+green+green+green+green+blue) >> 3; |
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358 color.red = color.green = color.blue = intensity; |
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359 } |
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360 } |
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361 newData.palette = new PaletteData(rgbs); |
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362 } else { |
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363 /* Create a 8 bit depth image data with a gray palette. */ |
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364 RGB[] rgbs = new RGB[256]; |
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365 for (int i=0; i<rgbs.length; i++) { |
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366 rgbs[i] = new RGB(i, i, i); |
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367 } |
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368 newData = new ImageData(rect.width, rect.height, 8, new PaletteData(rgbs)); |
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369 newData.alpha = data.alpha; |
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370 newData.alphaData = data.alphaData; |
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371 newData.maskData = data.maskData; |
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372 newData.maskPad = data.maskPad; |
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373 if (data.transparentPixel !is -1) newData.transparentPixel = 254; |
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374 |
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375 /* Convert the pixels. */ |
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376 int[] scanline = new int[rect.width]; |
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377 int redMask = palette.redMask; |
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378 int greenMask = palette.greenMask; |
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379 int blueMask = palette.blueMask; |
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380 int redShift = palette.redShift; |
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381 int greenShift = palette.greenShift; |
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382 int blueShift = palette.blueShift; |
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383 for (int y=0; y<rect.height; y++) { |
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384 int offset = y * newData.bytesPerLine; |
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385 data.getPixels(0, y, rect.width, scanline, 0); |
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386 for (int x=0; x<rect.width; x++) { |
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387 int pixel = scanline[x]; |
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388 if (pixel !is data.transparentPixel) { |
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389 int red = pixel & redMask; |
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390 red = (redShift < 0) ? red >>> -redShift : red << redShift; |
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391 int green = pixel & greenMask; |
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392 green = (greenShift < 0) ? green >>> -greenShift : green << greenShift; |
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393 int blue = pixel & blueMask; |
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394 blue = (blueShift < 0) ? blue >>> -blueShift : blue << blueShift; |
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395 int intensity = (red+red+green+green+green+green+green+blue) >> 3; |
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396 if (newData.transparentPixel is intensity) intensity = 255; |
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397 newData.data[offset] = cast(byte)intensity; |
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398 } else { |
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399 newData.data[offset] = cast(byte)254; |
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400 } |
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401 offset++; |
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402 } |
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403 } |
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404 } |
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405 init (device, newData); |
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406 if (device.tracking) device.new_Object(this); |
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407 return; |
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408 } |
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409 default: |
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410 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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411 } |
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412 } |
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413 |
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414 /** |
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415 * Constructs an empty instance of this class with the |
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416 * width and height of the specified rectangle. The result |
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417 * may be drawn upon by creating a GC and using any of its |
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418 * drawing operations, as shown in the following example: |
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419 * <pre> |
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420 * Image i = new Image(device, boundsRectangle); |
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421 * GC gc = new GC(i); |
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422 * gc.drawRectangle(0, 0, 50, 50); |
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423 * gc.dispose(); |
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424 * </pre> |
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425 * <p> |
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426 * Note: Some platforms may have a limitation on the size |
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427 * of image that can be created (size depends on width, height, |
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428 * and depth). For example, Windows 95, 98, and ME do not allow |
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429 * images larger than 16M. |
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430 * </p> |
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431 * |
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432 * @param device the device on which to create the image |
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433 * @param bounds a rectangle specifying the image's width and height (must not be null) |
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434 * |
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435 * @exception IllegalArgumentException <ul> |
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436 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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437 * <li>ERROR_NULL_ARGUMENT - if the bounds rectangle is null</li> |
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438 * <li>ERROR_INVALID_ARGUMENT - if either the rectangle's width or height is negative</li> |
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439 * </ul> |
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440 * @exception DWTError <ul> |
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441 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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442 * </ul> |
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443 */ |
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444 public this(Device device, Rectangle bounds) { |
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445 if (device is null) device = Device.getDevice(); |
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446 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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447 if (bounds is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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448 init(device, bounds.width, bounds.height); |
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449 if (device.tracking) device.new_Object(this); |
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450 } |
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451 |
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452 /** |
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453 * Constructs an instance of this class from the given |
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454 * <code>ImageData</code>. |
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455 * |
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456 * @param device the device on which to create the image |
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457 * @param data the image data to create the image from (must not be null) |
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458 * |
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459 * @exception IllegalArgumentException <ul> |
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460 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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461 * <li>ERROR_NULL_ARGUMENT - if the image data is null</li> |
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462 * </ul> |
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463 * @exception DWTException <ul> |
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464 * <li>ERROR_UNSUPPORTED_DEPTH - if the depth of the ImageData is not supported</li> |
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465 * </ul> |
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466 * @exception DWTError <ul> |
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467 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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468 * </ul> |
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469 */ |
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470 public this(Device device, ImageData data) { |
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471 if (device is null) device = Device.getDevice(); |
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472 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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473 init(device, data); |
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474 if (device.tracking) device.new_Object(this); |
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475 } |
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476 |
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477 /** |
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478 * Constructs an instance of this class, whose type is |
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479 * <code>DWT.ICON</code>, from the two given <code>ImageData</code> |
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480 * objects. The two images must be the same size. Pixel transparency |
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481 * in either image will be ignored. |
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482 * <p> |
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483 * The mask image should contain white wherever the icon is to be visible, |
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484 * and black wherever the icon is to be transparent. In addition, |
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485 * the source image should contain black wherever the icon is to be |
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486 * transparent. |
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487 * </p> |
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488 * |
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489 * @param device the device on which to create the icon |
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490 * @param source the color data for the icon |
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491 * @param mask the mask data for the icon |
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492 * |
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493 * @exception IllegalArgumentException <ul> |
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494 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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495 * <li>ERROR_NULL_ARGUMENT - if either the source or mask is null </li> |
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496 * <li>ERROR_INVALID_ARGUMENT - if source and mask are different sizes</li> |
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497 * </ul> |
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498 * @exception DWTError <ul> |
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499 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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500 * </ul> |
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501 */ |
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502 public this(Device device, ImageData source, ImageData mask) { |
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503 if (device is null) device = Device.getDevice(); |
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504 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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505 if (source is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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506 if (mask is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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507 if (source.width !is mask.width || source.height !is mask.height) { |
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508 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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509 } |
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510 mask = ImageData.convertMask(mask); |
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511 init(device, this, source, mask); |
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512 if (device.tracking) device.new_Object(this); |
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513 } |
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514 |
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515 /** |
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516 * Constructs an instance of this class by loading its representation |
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517 * from the specified input stream. Throws an error if an error |
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518 * occurs while loading the image, or if the result is an image |
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519 * of an unsupported type. Application code is still responsible |
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520 * for closing the input stream. |
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521 * <p> |
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522 * This constructor is provided for convenience when loading a single |
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523 * image only. If the stream contains multiple images, only the first |
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524 * one will be loaded. To load multiple images, use |
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525 * <code>ImageLoader.load()</code>. |
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526 * </p><p> |
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527 * This constructor may be used to load a resource as follows: |
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528 * </p> |
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529 * <pre> |
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530 * static Image loadImage (Display display, Class clazz, String string) { |
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531 * InputStream stream = clazz.getResourceAsStream (string); |
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532 * if (stream is null) return null; |
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533 * Image image = null; |
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534 * try { |
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535 * image = new Image (display, stream); |
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536 * } catch (DWTException ex) { |
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537 * } finally { |
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538 * try { |
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539 * stream.close (); |
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540 * } catch (IOException ex) {} |
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541 * } |
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542 * return image; |
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543 * } |
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544 * </pre> |
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545 * |
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546 * @param device the device on which to create the image |
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547 * @param stream the input stream to load the image from |
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548 * |
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549 * @exception IllegalArgumentException <ul> |
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550 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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551 * <li>ERROR_NULL_ARGUMENT - if the stream is null</li> |
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552 * </ul> |
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553 * @exception DWTException <ul> |
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554 * <li>ERROR_IO - if an IO error occurs while reading from the stream</li> |
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555 * <li>ERROR_INVALID_IMAGE - if the image stream contains invalid data </li> |
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556 * <li>ERROR_UNSUPPORTED_DEPTH - if the image stream describes an image with an unsupported depth</li> |
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557 * <li>ERROR_UNSUPPORTED_FORMAT - if the image stream contains an unrecognized format</li> |
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558 * </ul> |
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559 * @exception DWTError <ul> |
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560 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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561 * </ul> |
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562 */ |
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563 public this (Device device, InputStream stream) { |
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564 if (device is null) device = Device.getDevice(); |
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565 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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566 init(device, new ImageData(stream)); |
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567 if (device.tracking) device.new_Object(this); |
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568 } |
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569 |
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570 /** |
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571 * Constructs an instance of this class by loading its representation |
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572 * from the file with the specified name. Throws an error if an error |
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573 * occurs while loading the image, or if the result is an image |
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574 * of an unsupported type. |
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575 * <p> |
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576 * This constructor is provided for convenience when loading |
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577 * a single image only. If the specified file contains |
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578 * multiple images, only the first one will be used. |
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579 * |
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580 * @param device the device on which to create the image |
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581 * @param filename the name of the file to load the image from |
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582 * |
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583 * @exception IllegalArgumentException <ul> |
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584 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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585 * <li>ERROR_NULL_ARGUMENT - if the file name is null</li> |
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586 * </ul> |
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587 * @exception DWTException <ul> |
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588 * <li>ERROR_IO - if an IO error occurs while reading from the file</li> |
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589 * <li>ERROR_INVALID_IMAGE - if the image file contains invalid data </li> |
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590 * <li>ERROR_UNSUPPORTED_DEPTH - if the image file describes an image with an unsupported depth</li> |
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591 * <li>ERROR_UNSUPPORTED_FORMAT - if the image file contains an unrecognized format</li> |
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592 * </ul> |
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593 * @exception DWTError <ul> |
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594 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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595 * </ul> |
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596 */ |
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597 public this (Device device, char[] filename) { |
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598 if (device is null) device = Device.getDevice(); |
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599 if (device is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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600 if (filename is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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601 this.device = device; |
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602 try { |
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603 device.checkGDIP(); |
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604 int length = filename.length; |
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605 char[] chars = new char[length+1]; |
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606 filename.getChars(0, length, chars, 0); |
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607 auto bitmap = Gdip.Bitmap_new( .StrToWCHARz( filename ), false); |
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608 if (bitmap !is null) { |
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609 int error = DWT.ERROR_NO_HANDLES; |
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610 int status = Gdip.Image_GetLastStatus(cast(Gdip.Image)bitmap); |
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611 if (status is 0) { |
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612 if (filename.toLowerCase().endsWith(".ico")) { |
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613 this.type = DWT.ICON; |
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614 HICON hicon; |
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615 Gdip.Bitmap_GetHICON(bitmap, hicon); |
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616 this.handle = hicon; |
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617 } else { |
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618 this.type = DWT.BITMAP; |
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619 int width = Gdip.Image_GetWidth(cast(Gdip.Image)bitmap); |
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620 int height = Gdip.Image_GetHeight(cast(Gdip.Image)bitmap); |
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621 int pixelFormat = Gdip.Image_GetPixelFormat(cast(Gdip.Image)bitmap); |
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622 switch (pixelFormat) { |
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623 case Gdip.PixelFormat16bppRGB555: |
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624 case Gdip.PixelFormat16bppRGB565: |
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625 this.handle = createDIB(width, height, 16); |
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626 break; |
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627 case Gdip.PixelFormat24bppRGB: |
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628 this.handle = createDIB(width, height, 24); |
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629 break; |
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630 case Gdip.PixelFormat32bppRGB: |
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631 // These will loose either precision or transparency |
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632 case Gdip.PixelFormat16bppGrayScale: |
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633 case Gdip.PixelFormat48bppRGB: |
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634 case Gdip.PixelFormat32bppPARGB: |
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635 case Gdip.PixelFormat64bppARGB: |
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636 case Gdip.PixelFormat64bppPARGB: |
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637 this.handle = createDIB(width, height, 32); |
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638 break; |
81 | 639 default: |
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640 } |
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641 if (this.handle !is null) { |
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642 /* |
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643 * This performs better than getting the bits with Bitmap.LockBits(), |
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644 * but it cannot be used when there is transparency. |
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645 */ |
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646 auto hDC = device.internal_new_GC(null); |
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647 auto srcHDC = OS.CreateCompatibleDC(hDC); |
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648 auto oldSrcBitmap = OS.SelectObject(srcHDC, this.handle); |
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649 auto graphics = Gdip.Graphics_new(srcHDC); |
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650 if (graphics !is null) { |
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651 Gdip.Rect rect; |
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652 rect.Width = width; |
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653 rect.Height = height; |
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654 status = Gdip.Graphics_DrawImage(graphics, cast(Gdip.Image)bitmap, rect, 0, 0, width, height, Gdip.UnitPixel, null, null, null); |
22
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655 if (status !is 0) { |
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656 error = DWT.ERROR_INVALID_IMAGE; |
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657 OS.DeleteObject(handle); |
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658 this.handle = null; |
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659 } |
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660 Gdip.Graphics_delete(graphics); |
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661 } |
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662 OS.SelectObject(srcHDC, oldSrcBitmap); |
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663 OS.DeleteDC(srcHDC); |
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664 device.internal_dispose_GC(hDC, null); |
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665 } else { |
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666 auto lockedBitmapData = Gdip.BitmapData_new(); |
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667 if (lockedBitmapData !is null) { |
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668 Gdip.Bitmap_LockBits(bitmap, null, 0, pixelFormat, lockedBitmapData); |
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669 //BitmapData bitmapData = new BitmapData(); |
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670 //Gdip.MoveMemory(bitmapData, lockedBitmapData); |
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671 auto stride = lockedBitmapData.Stride; |
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672 auto pixels = lockedBitmapData.Scan0; |
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673 int depth = 0, scanlinePad = 4, transparentPixel = -1; |
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674 switch (lockedBitmapData.PixelFormat) { |
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675 case Gdip.PixelFormat1bppIndexed: depth = 1; break; |
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676 case Gdip.PixelFormat4bppIndexed: depth = 4; break; |
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677 case Gdip.PixelFormat8bppIndexed: depth = 8; break; |
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678 case Gdip.PixelFormat16bppARGB1555: |
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679 case Gdip.PixelFormat16bppRGB555: |
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680 case Gdip.PixelFormat16bppRGB565: depth = 16; break; |
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681 case Gdip.PixelFormat24bppRGB: depth = 24; break; |
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682 case Gdip.PixelFormat32bppRGB: |
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683 case Gdip.PixelFormat32bppARGB: depth = 32; break; |
81 | 684 default: |
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685 } |
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686 if (depth !is 0) { |
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687 PaletteData paletteData = null; |
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688 switch (lockedBitmapData.PixelFormat) { |
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689 case Gdip.PixelFormat1bppIndexed: |
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690 case Gdip.PixelFormat4bppIndexed: |
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691 case Gdip.PixelFormat8bppIndexed: |
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692 int paletteSize = Gdip.Image_GetPaletteSize(cast(Gdip.Image)bitmap); |
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693 auto hHeap = OS.GetProcessHeap(); |
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694 auto palette = cast(Gdip.ColorPalette*) OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, paletteSize); |
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695 if (palette is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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696 Gdip.Image_GetPalette(cast(Gdip.Image)bitmap, palette, paletteSize); |
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697 Gdip.ColorPalette* colorPalette = palette; |
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698 //Gdip.MoveMemory(colorPalette, palette, ColorPalette.sizeof); |
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699 int[] entries = new int[colorPalette.Count]; |
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700 //OS.MoveMemory(entries, palette + 8, entries.length * 4); |
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701 RGB[] rgbs = new RGB[colorPalette.Count]; |
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702 paletteData = new PaletteData(rgbs); |
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703 for (int i = 0; i < entries.length; i++) { |
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704 if (((palette.Entries[i] >> 24) & 0xFF) is 0 && (colorPalette.Flags & Gdip.PaletteFlagsHasAlpha) !is 0) { |
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705 transparentPixel = i; |
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706 } |
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707 rgbs[i] = new RGB(((palette.Entries[i] & 0xFF0000) >> 16), ((palette.Entries[i] & 0xFF00) >> 8), ((palette.Entries[i] & 0xFF) >> 0)); |
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708 } |
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709 OS.HeapFree(hHeap, 0, palette); |
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710 break; |
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711 case Gdip.PixelFormat16bppARGB1555: |
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712 case Gdip.PixelFormat16bppRGB555: paletteData = new PaletteData(0x7C00, 0x3E0, 0x1F); break; |
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713 case Gdip.PixelFormat16bppRGB565: paletteData = new PaletteData(0xF800, 0x7E0, 0x1F); break; |
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714 case Gdip.PixelFormat24bppRGB: paletteData = new PaletteData(0xFF, 0xFF00, 0xFF0000); break; |
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715 case Gdip.PixelFormat32bppRGB: |
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716 case Gdip.PixelFormat32bppARGB: paletteData = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); break; |
81 | 717 default: |
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718 } |
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719 byte[] data = (cast(byte*)data)[ 0 .. stride * height], alphaData = null; |
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720 //OS.MoveMemory(data, pixels, data.length); |
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721 switch (lockedBitmapData.PixelFormat) { |
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722 case Gdip.PixelFormat16bppARGB1555: |
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723 alphaData = new byte[width * height]; |
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724 for (int i = 1, j = 0; i < data.length; i += 2, j++) { |
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725 alphaData[j] = cast(byte)((data[i] & 0x80) !is 0 ? 255 : 0); |
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726 } |
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727 break; |
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728 case Gdip.PixelFormat32bppARGB: |
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729 alphaData = new byte[width * height]; |
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730 for (int i = 3, j = 0; i < data.length; i += 4, j++) { |
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731 alphaData[j] = data[i]; |
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732 } |
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733 break; |
81 | 734 default: |
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735 } |
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736 Gdip.Bitmap_UnlockBits(bitmap, lockedBitmapData); |
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737 Gdip.BitmapData_delete(lockedBitmapData); |
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738 ImageData img = new ImageData(width, height, depth, paletteData, scanlinePad, data); |
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739 img.transparentPixel = transparentPixel; |
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740 img.alphaData = alphaData; |
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741 init(device, img); |
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742 } |
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743 } |
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744 } |
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745 } |
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746 } |
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747 Gdip.Bitmap_delete(bitmap); |
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748 if (status is 0) { |
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749 if (this.handle is null) DWT.error(error); |
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750 return; |
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751 } |
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752 } |
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753 } catch (DWTException e) {} |
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754 init(device, new ImageData(filename)); |
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755 if(device.tracking) device.new_Object(this); |
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756 } |
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757 |
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758 /** |
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759 * Create a DIB from a DDB without using GetDIBits. Note that |
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760 * the DDB should not be selected into a HDC. |
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761 */ |
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762 HBITMAP createDIBFromDDB(HDC hDC, HBITMAP hBitmap, int width, int height) { |
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763 |
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764 /* Determine the DDB depth */ |
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765 int bits = OS.GetDeviceCaps (hDC, OS.BITSPIXEL); |
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766 int planes = OS.GetDeviceCaps (hDC, OS.PLANES); |
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767 int depth = bits * planes; |
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768 |
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769 /* Determine the DIB palette */ |
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770 bool isDirect = depth > 8; |
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771 RGB[] rgbs = null; |
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772 if (!isDirect) { |
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773 int numColors = 1 << depth; |
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774 byte[] logPalette = new byte[4 * numColors]; |
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775 OS.GetPaletteEntries(device.hPalette, 0, numColors, cast(PALETTEENTRY*)logPalette.ptr); |
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776 rgbs = new RGB[numColors]; |
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777 for (int i = 0; i < numColors; i++) { |
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778 rgbs[i] = new RGB(logPalette[i] & 0xFF, logPalette[i + 1] & 0xFF, logPalette[i + 2] & 0xFF); |
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779 } |
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780 } |
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781 |
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782 bool useBitfields = OS.IsWinCE && (depth is 16 || depth is 32); |
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783 BITMAPINFOHEADER bmiHeader; |
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784 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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785 bmiHeader.biWidth = width; |
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786 bmiHeader.biHeight = -height; |
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787 bmiHeader.biPlanes = 1; |
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788 bmiHeader.biBitCount = cast(short)depth; |
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789 if (useBitfields) bmiHeader.biCompression = OS.BI_BITFIELDS; |
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790 else bmiHeader.biCompression = OS.BI_RGB; |
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791 byte[] bmi; |
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792 if (isDirect) bmi = new byte[BITMAPINFOHEADER.sizeof + (useBitfields ? 12 : 0)]; |
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793 else bmi = new byte[BITMAPINFOHEADER.sizeof + rgbs.length * 4]; |
23 | 794 *cast(BITMAPINFOHEADER*)bmi.ptr = bmiHeader; |
22
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795 |
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796 /* Set the rgb colors into the bitmap info */ |
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797 int offset = BITMAPINFOHEADER.sizeof; |
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798 if (isDirect) { |
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799 if (useBitfields) { |
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800 int redMask = 0; |
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801 int greenMask = 0; |
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802 int blueMask = 0; |
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803 switch (depth) { |
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804 case 16: |
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805 redMask = 0x7C00; |
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806 greenMask = 0x3E0; |
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807 blueMask = 0x1F; |
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808 /* little endian */ |
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809 bmi[offset] = cast(byte)((redMask & 0xFF) >> 0); |
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810 bmi[offset + 1] = cast(byte)((redMask & 0xFF00) >> 8); |
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811 bmi[offset + 2] = cast(byte)((redMask & 0xFF0000) >> 16); |
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812 bmi[offset + 3] = cast(byte)((redMask & 0xFF000000) >> 24); |
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813 bmi[offset + 4] = cast(byte)((greenMask & 0xFF) >> 0); |
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814 bmi[offset + 5] = cast(byte)((greenMask & 0xFF00) >> 8); |
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815 bmi[offset + 6] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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816 bmi[offset + 7] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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817 bmi[offset + 8] = cast(byte)((blueMask & 0xFF) >> 0); |
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818 bmi[offset + 9] = cast(byte)((blueMask & 0xFF00) >> 8); |
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819 bmi[offset + 10] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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820 bmi[offset + 11] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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821 break; |
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822 case 32: |
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823 redMask = 0xFF00; |
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824 greenMask = 0xFF0000; |
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825 blueMask = 0xFF000000; |
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826 /* big endian */ |
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827 bmi[offset] = cast(byte)((redMask & 0xFF000000) >> 24); |
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828 bmi[offset + 1] = cast(byte)((redMask & 0xFF0000) >> 16); |
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829 bmi[offset + 2] = cast(byte)((redMask & 0xFF00) >> 8); |
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830 bmi[offset + 3] = cast(byte)((redMask & 0xFF) >> 0); |
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831 bmi[offset + 4] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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832 bmi[offset + 5] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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833 bmi[offset + 6] = cast(byte)((greenMask & 0xFF00) >> 8); |
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834 bmi[offset + 7] = cast(byte)((greenMask & 0xFF) >> 0); |
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835 bmi[offset + 8] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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836 bmi[offset + 9] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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837 bmi[offset + 10] = cast(byte)((blueMask & 0xFF00) >> 8); |
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838 bmi[offset + 11] = cast(byte)((blueMask & 0xFF) >> 0); |
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839 break; |
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840 default: |
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841 DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH); |
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842 } |
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843 } |
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844 } else { |
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845 for (int j = 0; j < rgbs.length; j++) { |
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846 bmi[offset] = cast(byte)rgbs[j].blue; |
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847 bmi[offset + 1] = cast(byte)rgbs[j].green; |
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848 bmi[offset + 2] = cast(byte)rgbs[j].red; |
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849 bmi[offset + 3] = 0; |
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850 offset += 4; |
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851 } |
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852 } |
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853 int pBits; |
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854 HBITMAP hDib = OS.CreateDIBSection(null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS, &pBits, null, 0); |
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855 if (hDib is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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856 |
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857 /* Bitblt DDB into DIB */ |
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858 auto hdcSource = OS.CreateCompatibleDC(hDC); |
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859 auto hdcDest = OS.CreateCompatibleDC(hDC); |
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860 auto hOldSrc = OS.SelectObject(hdcSource, hBitmap); |
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861 auto hOldDest = OS.SelectObject(hdcDest, hDib); |
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862 OS.BitBlt(hdcDest, 0, 0, width, height, hdcSource, 0, 0, OS.SRCCOPY); |
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863 OS.SelectObject(hdcSource, hOldSrc); |
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864 OS.SelectObject(hdcDest, hOldDest); |
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865 OS.DeleteDC(hdcSource); |
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866 OS.DeleteDC(hdcDest); |
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867 |
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868 return hDib; |
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869 } |
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870 |
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871 // FIXME: Potential crash site in D: createGdipImage casts pointers to int before |
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872 // returning them in an int[]. Since the D GC does not and cannot scan int's for |
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873 // pointers, there is potential that the pointer's object could be collected while still |
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874 // active, even though it might be unlikely given the short span of time that the |
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875 // function has them stored in the int array. |
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876 |
22
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877 int[] createGdipImage() { |
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878 switch (type) { |
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879 case DWT.BITMAP: { |
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880 if (alpha !is -1 || alphaData !is null || transparentPixel !is -1) { |
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881 BITMAP bm; |
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882 OS.GetObject(handle, BITMAP.sizeof, &bm); |
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883 int imgWidth = bm.bmWidth; |
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884 int imgHeight = bm.bmHeight; |
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885 auto hDC = device.internal_new_GC(null); |
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886 auto srcHdc = OS.CreateCompatibleDC(hDC); |
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887 auto oldSrcBitmap = OS.SelectObject(srcHdc, handle); |
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888 auto memHdc = OS.CreateCompatibleDC(hDC); |
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889 auto memDib = createDIB(imgWidth, imgHeight, 32); |
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890 if (memDib is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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891 auto oldMemBitmap = OS.SelectObject(memHdc, memDib); |
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892 BITMAP dibBM; |
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893 OS.GetObject(memDib, BITMAP.sizeof, &dibBM); |
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894 int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight; |
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895 OS.BitBlt(memHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, 0, OS.SRCCOPY); |
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896 ubyte red = 0, green = 0, blue = 0; |
22
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897 if (transparentPixel !is -1) { |
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898 if (bm.bmBitsPixel <= 8) { |
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diff
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899 ubyte[] color = new ubyte[4]; |
22
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900 OS.GetDIBColorTable(srcHdc, transparentPixel, 1, cast(RGBQUAD*)color.ptr); |
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901 blue = color[0]; |
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902 green = color[1]; |
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903 red = color[2]; |
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904 } else { |
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905 switch (bm.bmBitsPixel) { |
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906 case 16: |
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907 int blueMask = 0x1F; |
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908 int blueShift = ImageData.getChannelShift(blueMask); |
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909 byte[] blues = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(blueMask, blueShift)]; |
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910 blue = blues[(transparentPixel & blueMask) >> blueShift]; |
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911 int greenMask = 0x3E0; |
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912 int greenShift = ImageData.getChannelShift(greenMask); |
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913 byte[] greens = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(greenMask, greenShift)]; |
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914 green = greens[(transparentPixel & greenMask) >> greenShift]; |
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915 int redMask = 0x7C00; |
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916 int redShift = ImageData.getChannelShift(redMask); |
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917 byte[] reds = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(redMask, redShift)]; |
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918 red = reds[(transparentPixel & redMask) >> redShift]; |
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919 break; |
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920 case 24: |
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921 blue = cast(ubyte)((transparentPixel & 0xFF0000) >> 16); |
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922 green = cast(ubyte)((transparentPixel & 0xFF00) >> 8); |
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923 red = cast(ubyte)(transparentPixel & 0xFF); |
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924 break; |
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925 case 32: |
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926 blue = cast(ubyte)((transparentPixel & 0xFF000000) >>> 24); |
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927 green = cast(ubyte)((transparentPixel & 0xFF0000) >> 16); |
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928 red = cast(ubyte)((transparentPixel & 0xFF00) >> 8); |
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929 break; |
81 | 930 default: |
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931 } |
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932 } |
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933 } |
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934 OS.SelectObject(srcHdc, oldSrcBitmap); |
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935 OS.SelectObject(memHdc, oldMemBitmap); |
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936 OS.DeleteObject(srcHdc); |
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937 OS.DeleteObject(memHdc); |
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938 ubyte[] srcData = (cast(ubyte*)dibBM.bmBits)[ 0 .. sizeInBytes ].dup; |
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939 OS.DeleteObject(memDib); |
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940 device.internal_dispose_GC(hDC, null); |
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941 if (alpha !is -1) { |
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942 for (int y = 0, dp = 0; y < imgHeight; ++y) { |
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943 for (int x = 0; x < imgWidth; ++x) { |
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944 srcData[dp + 3] = cast(ubyte)alpha; |
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945 dp += 4; |
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946 } |
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947 } |
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948 } else if (alphaData !is null) { |
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949 for (int y = 0, dp = 0, ap = 0; y < imgHeight; ++y) { |
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950 for (int x = 0; x < imgWidth; ++x) { |
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951 srcData[dp + 3] = alphaData[ap++]; |
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952 dp += 4; |
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953 } |
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954 } |
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955 } else if (transparentPixel !is -1) { |
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956 for (int y = 0, dp = 0; y < imgHeight; ++y) { |
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957 for (int x = 0; x < imgWidth; ++x) { |
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958 if (srcData[dp] is blue && srcData[dp + 1] is green && srcData[dp + 2] is red) { |
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959 srcData[dp + 3] = cast(ubyte)0; |
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960 } else { |
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961 srcData[dp + 3] = cast(ubyte)0xFF; |
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962 } |
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963 dp += 4; |
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964 } |
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965 } |
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966 } |
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967 auto hHeap = OS.GetProcessHeap(); |
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968 auto pixels = cast(ubyte*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, srcData.length); |
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969 if (pixels is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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970 OS.MoveMemory(pixels, srcData.ptr, sizeInBytes); |
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971 return [ cast(int)(Gdip.Bitmap_new(imgWidth, imgHeight, dibBM.bmWidthBytes, Gdip.PixelFormat32bppARGB, pixels)), cast(int) pixels]; |
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972 } |
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973 return [cast(int)Gdip.Bitmap_new(handle, null), 0]; |
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974 } |
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975 case DWT.ICON: { |
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976 /* |
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977 * Bug in GDI+. Creating a new GDI+ Bitmap from a HICON segment faults |
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978 * when the icon width is bigger than the icon height. The fix is to |
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979 * detect this and create a PixelFormat32bppARGB image instead. |
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980 */ |
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981 ICONINFO iconInfo; |
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982 if (OS.IsWinCE) { |
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983 GetIconInfo(this, &iconInfo); |
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984 } else { |
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985 OS.GetIconInfo(handle, &iconInfo); |
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986 } |
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987 auto hBitmap = iconInfo.hbmColor; |
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988 if (hBitmap is null) hBitmap = iconInfo.hbmMask; |
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989 BITMAP bm; |
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990 OS.GetObject(hBitmap, BITMAP.sizeof, &bm); |
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991 int imgWidth = bm.bmWidth; |
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992 int imgHeight = hBitmap is iconInfo.hbmMask ? bm.bmHeight / 2 : bm.bmHeight; |
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993 Gdip.Bitmap img; |
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994 ubyte* pixels; |
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995 if (imgWidth > imgHeight) { |
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996 auto hDC = device.internal_new_GC(null); |
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997 auto srcHdc = OS.CreateCompatibleDC(hDC); |
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998 auto oldSrcBitmap = OS.SelectObject(srcHdc, hBitmap); |
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999 auto memHdc = OS.CreateCompatibleDC(hDC); |
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1000 auto memDib = createDIB(imgWidth, imgHeight, 32); |
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1001 if (memDib is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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1002 auto oldMemBitmap = OS.SelectObject(memHdc, memDib); |
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1003 BITMAP dibBM; |
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1004 OS.GetObject(memDib, BITMAP.sizeof, &dibBM); |
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1005 OS.BitBlt(memHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, hBitmap is iconInfo.hbmMask ? imgHeight : 0, OS.SRCCOPY); |
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1006 OS.SelectObject(memHdc, oldMemBitmap); |
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1007 OS.DeleteObject(memHdc); |
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1008 ubyte[] srcData = (cast(ubyte*)dibBM.bmBits)[ 0 .. dibBM.bmWidthBytes * dibBM.bmHeight].dup; |
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1009 OS.DeleteObject(memDib); |
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1010 OS.SelectObject(srcHdc, iconInfo.hbmMask); |
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1011 for (int y = 0, dp = 0; y < imgHeight; ++y) { |
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1012 for (int x = 0; x < imgWidth; ++x) { |
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1013 if (OS.GetPixel(srcHdc, x, y) !is 0) { |
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1014 srcData[dp + 3] = cast(ubyte)0; |
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1015 } else { |
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1016 srcData[dp + 3] = cast(ubyte)0xFF; |
22
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1017 } |
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1018 dp += 4; |
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1019 } |
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1020 } |
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1021 OS.SelectObject(srcHdc, oldSrcBitmap); |
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1022 OS.DeleteObject(srcHdc); |
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1023 device.internal_dispose_GC(hDC, null); |
23 | 1024 auto hHeap = OS.GetProcessHeap(); |
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1025 pixels = cast(ubyte*) OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, srcData.length); |
23 | 1026 if (pixels is null) DWT.error(DWT.ERROR_NO_HANDLES); |
1027 pixels[ 0 .. srcData.length ] = srcData[]; | |
22
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1028 img = Gdip.Bitmap_new(imgWidth, imgHeight, dibBM.bmWidthBytes, Gdip.PixelFormat32bppARGB, pixels); |
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1029 } else { |
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1030 img = Gdip.Bitmap_new(handle); |
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1031 } |
23 | 1032 if (iconInfo.hbmColor !is null) OS.DeleteObject(iconInfo.hbmColor); |
1033 if (iconInfo.hbmMask !is null) OS.DeleteObject(iconInfo.hbmMask); | |
1034 return [ cast(int)img, cast(int) pixels ]; | |
22
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1035 } |
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1036 default: DWT.error(DWT.ERROR_INVALID_IMAGE); |
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1037 } |
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1038 return null; |
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1039 } |
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1040 |
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1041 /** |
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1042 * Disposes of the operating system resources associated with |
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1043 * the image. Applications must dispose of all images which |
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1044 * they allocate. |
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1045 */ |
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1046 override public void dispose () { |
22
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1047 if (handle is null) return; |
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1048 if (device.isDisposed()) return; |
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1049 if (memGC !is null) memGC.dispose(); |
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1050 if (type is DWT.ICON) { |
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1051 if (OS.IsWinCE) data = null; |
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1052 OS.DestroyIcon (handle); |
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1053 } else { |
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1054 OS.DeleteObject (handle); |
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1055 } |
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1056 handle = null; |
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1057 memGC = null; |
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1058 if (device.tracking) device.dispose_Object(this); |
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1059 device = null; |
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1060 } |
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1061 |
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1062 /** |
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1063 * Compares the argument to the receiver, and returns true |
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1064 * if they represent the <em>same</em> object using a class |
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1065 * specific comparison. |
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1066 * |
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1067 * @param object the object to compare with this object |
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1068 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise |
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1069 * |
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1070 * @see #hashCode |
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1071 */ |
48
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1072 override public int opEquals (Object object) { |
22
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1073 if (object is this) return true; |
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1074 if (!(cast(Image)object)) return false; |
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1075 Image image = cast(Image) object; |
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1076 return device is image.device && handle is image.handle; |
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1077 } |
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1078 |
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1079 /** |
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1080 * Returns the color to which to map the transparent pixel, or null if |
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1081 * the receiver has no transparent pixel. |
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1082 * <p> |
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1083 * There are certain uses of Images that do not support transparency |
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1084 * (for example, setting an image into a button or label). In these cases, |
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1085 * it may be desired to simulate transparency by using the background |
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1086 * color of the widget to paint the transparent pixels of the image. |
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1087 * Use this method to check which color will be used in these cases |
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1088 * in place of transparency. This value may be set with setBackground(). |
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1089 * <p> |
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1090 * |
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1091 * @return the background color of the image, or null if there is no transparency in the image |
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1092 * |
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1093 * @exception DWTException <ul> |
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1094 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
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1095 * </ul> |
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1096 */ |
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1097 public Color getBackground() { |
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1098 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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1099 if (transparentPixel is -1) return null; |
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1100 |
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1101 /* Get the HDC for the device */ |
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1102 auto hDC = device.internal_new_GC(null); |
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1103 |
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1104 /* Compute the background color */ |
23 | 1105 BITMAP bm; |
1106 OS.GetObject(handle, BITMAP.sizeof, &bm); | |
22
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1107 auto hdcMem = OS.CreateCompatibleDC(hDC); |
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1108 auto hOldObject = OS.SelectObject(hdcMem, handle); |
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1109 int red = 0, green = 0, blue = 0; |
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1110 if (bm.bmBitsPixel <= 8) { |
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1111 if (OS.IsWinCE) { |
23 | 1112 byte* pBits = cast(byte*)bm.bmBits; |
1113 //OS.MoveMemory(pBits, bm.bmBits, 1); | |
22
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1114 byte oldValue = pBits[0]; |
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1115 int mask = (0xFF << (8 - bm.bmBitsPixel)) & 0x00FF; |
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1116 pBits[0] = cast(byte)((transparentPixel << (8 - bm.bmBitsPixel)) | (pBits[0] & ~mask)); |
23 | 1117 //OS.MoveMemory(bm.bmBits, bm.bmBits, 1); |
22
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1118 int color = OS.GetPixel(hdcMem, 0, 0); |
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1119 pBits[0] = oldValue; |
23 | 1120 //OS.MoveMemory(bm.bmBits, bm.bmBits, 1); |
22
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1121 blue = (color & 0xFF0000) >> 16; |
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1122 green = (color & 0xFF00) >> 8; |
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1123 red = color & 0xFF; |
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1124 } else { |
23 | 1125 RGBQUAD color; |
1126 OS.GetDIBColorTable(hdcMem, transparentPixel, 1, &color); | |
1127 blue = color.rgbBlue; | |
1128 green = color.rgbGreen; | |
1129 red = color.rgbRed; | |
22
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1130 } |
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1131 } else { |
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1132 switch (bm.bmBitsPixel) { |
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1133 case 16: |
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1134 blue = (transparentPixel & 0x1F) << 3; |
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1135 green = (transparentPixel & 0x3E0) >> 2; |
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1136 red = (transparentPixel & 0x7C00) >> 7; |
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1137 break; |
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1138 case 24: |
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1139 blue = (transparentPixel & 0xFF0000) >> 16; |
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1140 green = (transparentPixel & 0xFF00) >> 8; |
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1141 red = transparentPixel & 0xFF; |
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1142 break; |
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1143 case 32: |
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1144 blue = (transparentPixel & 0xFF000000) >>> 24; |
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1145 green = (transparentPixel & 0xFF0000) >> 16; |
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1146 red = (transparentPixel & 0xFF00) >> 8; |
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1147 break; |
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1148 default: |
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1149 return null; |
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1150 } |
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1151 } |
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1152 OS.SelectObject(hdcMem, hOldObject); |
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1153 OS.DeleteDC(hdcMem); |
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1154 |
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1155 /* Release the HDC for the device */ |
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1156 device.internal_dispose_GC(hDC, null); |
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1157 return Color.win32_new(device, (blue << 16) | (green << 8) | red); |
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1158 } |
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1159 |
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1160 /** |
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1161 * Returns the bounds of the receiver. The rectangle will always |
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1162 * have x and y values of 0, and the width and height of the |
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1163 * image. |
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1164 * |
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1165 * @return a rectangle specifying the image's bounds |
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1166 * |
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1167 * @exception DWTException <ul> |
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1168 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
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1169 * <li>ERROR_INVALID_IMAGE - if the image is not a bitmap or an icon</li> |
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1170 * </ul> |
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1171 */ |
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1172 public Rectangle getBounds() { |
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1173 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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1174 if (width !is -1 && height !is -1) { |
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1175 return new Rectangle(0, 0, width, height); |
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1176 } |
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1177 switch (type) { |
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1178 case DWT.BITMAP: |
23 | 1179 BITMAP bm; |
1180 OS.GetObject(handle, BITMAP.sizeof, &bm); | |
22
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1181 return new Rectangle(0, 0, width = bm.bmWidth, height = bm.bmHeight); |
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1182 case DWT.ICON: |
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1183 if (OS.IsWinCE) { |
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1184 return new Rectangle(0, 0, width = data.width, height = data.height); |
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1185 } else { |
23 | 1186 ICONINFO info; |
1187 OS.GetIconInfo(handle, &info); | |
1188 auto hBitmap = info.hbmColor; | |
1189 if (hBitmap is null) hBitmap = info.hbmMask; | |
1190 BITMAP bm; | |
1191 OS.GetObject(hBitmap, BITMAP.sizeof, &bm); | |
22
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1192 if (hBitmap is info.hbmMask) bm.bmHeight /= 2; |
23 | 1193 if (info.hbmColor !is null) OS.DeleteObject(info.hbmColor); |
1194 if (info.hbmMask !is null) OS.DeleteObject(info.hbmMask); | |
22
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1195 return new Rectangle(0, 0, width = bm.bmWidth, height = bm.bmHeight); |
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1196 } |
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1197 default: |
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1198 DWT.error(DWT.ERROR_INVALID_IMAGE); |
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1199 return null; |
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1200 } |
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1201 } |
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1202 |
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1203 /** |
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1204 * Returns an <code>ImageData</code> based on the receiver |
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1205 * Modifications made to this <code>ImageData</code> will not |
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1206 * affect the Image. |
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1207 * |
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1208 * @return an <code>ImageData</code> containing the image's data and attributes |
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1209 * |
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1210 * @exception DWTException <ul> |
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1211 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
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1212 * <li>ERROR_INVALID_IMAGE - if the image is not a bitmap or an icon</li> |
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1213 * </ul> |
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1214 * |
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1215 * @see ImageData |
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1216 */ |
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1217 public ImageData getImageData() { |
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1218 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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1219 BITMAP bm; |
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1220 int depth, width, height; |
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1221 switch (type) { |
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1222 case DWT.ICON: { |
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1223 if (OS.IsWinCE) return data; |
23 | 1224 ICONINFO info; |
22
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1225 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1226 OS.GetIconInfo(handle, &info); |
22
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1227 /* Get the basic BITMAP information */ |
23 | 1228 auto hBitmap = info.hbmColor; |
1229 if (hBitmap is null) hBitmap = info.hbmMask; | |
1230 OS.GetObject(hBitmap, BITMAP.sizeof, &bm); | |
22
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1231 depth = bm.bmPlanes * bm.bmBitsPixel; |
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1232 width = bm.bmWidth; |
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1233 if (hBitmap is info.hbmMask) bm.bmHeight /= 2; |
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1234 height = bm.bmHeight; |
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1235 int numColors = 0; |
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1236 if (depth <= 8) numColors = 1 << depth; |
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1237 /* Create the BITMAPINFO */ |
23 | 1238 BITMAPINFOHEADER bmiHeader; |
22
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1239 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1240 bmiHeader.biWidth = width; |
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1241 bmiHeader.biHeight = -height; |
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1242 bmiHeader.biPlanes = 1; |
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1243 bmiHeader.biBitCount = cast(short)depth; |
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1244 bmiHeader.biCompression = OS.BI_RGB; |
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1245 byte[] bmi = new byte[BITMAPINFOHEADER.sizeof + numColors * 4]; |
23 | 1246 *cast(BITMAPINFOHEADER*)bmi.ptr = bmiHeader; |
22
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1247 |
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1248 /* Get the HDC for the device */ |
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1249 auto hDC = device.internal_new_GC(null); |
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1250 |
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1251 /* Create the DC and select the bitmap */ |
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1252 auto hBitmapDC = OS.CreateCompatibleDC(hDC); |
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1253 auto hOldBitmap = OS.SelectObject(hBitmapDC, hBitmap); |
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1254 /* Select the palette if necessary */ |
23 | 1255 HPALETTE oldPalette; |
22
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1256 if (depth <= 8) { |
23 | 1257 auto hPalette = device.hPalette; |
1258 if (hPalette !is null) { | |
22
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1259 oldPalette = OS.SelectPalette(hBitmapDC, hPalette, false); |
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1260 OS.RealizePalette(hBitmapDC); |
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1261 } |
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1262 } |
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1263 /* Find the size of the image and allocate data */ |
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1264 int imageSize; |
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1265 /* Call with null lpBits to get the image size */ |
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1266 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1267 OS.GetDIBits(hBitmapDC, hBitmap, 0, height, null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
1268 bmiHeader = *cast(BITMAPINFOHEADER*)bmi.ptr; | |
22
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1269 imageSize = bmiHeader.biSizeImage; |
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1270 /* Get the bitmap data */ |
23 | 1271 auto hHeap = OS.GetProcessHeap(); |
1272 auto lpvBits = cast(byte*) OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, imageSize); | |
1273 if (lpvBits is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1274 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1275 OS.GetDIBits(hBitmapDC, hBitmap, 0, height, lpvBits, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
1276 byte[] data = lpvBits[ 0 .. imageSize].dup; /*PORTING_OPTIMIZE?*/ | |
22
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1277 /* Calculate the palette */ |
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1278 PaletteData palette = null; |
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1279 if (depth <= 8) { |
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1280 RGB[] rgbs = new RGB[numColors]; |
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1281 int srcIndex = 40; |
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1282 for (int i = 0; i < numColors; i++) { |
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1283 rgbs[i] = new RGB(bmi[srcIndex + 2] & 0xFF, bmi[srcIndex + 1] & 0xFF, bmi[srcIndex] & 0xFF); |
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1284 srcIndex += 4; |
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1285 } |
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1286 palette = new PaletteData(rgbs); |
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1287 } else if (depth is 16) { |
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1288 palette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
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1289 } else if (depth is 24) { |
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1290 palette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
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1291 } else if (depth is 32) { |
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1292 palette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
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1293 } else { |
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1294 DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH); |
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1295 } |
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1296 |
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1297 /* Do the mask */ |
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1298 byte [] maskData = null; |
23 | 1299 if (info.hbmColor is null) { |
22
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1300 /* Do the bottom half of the mask */ |
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1301 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1302 OS.GetDIBits(hBitmapDC, hBitmap, height, height, lpvBits, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
1303 maskData = lpvBits[ 0 .. imageSize].dup; | |
22
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1304 } else { |
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1305 /* Do the entire mask */ |
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1306 /* Create the BITMAPINFO */ |
23 | 1307 bmiHeader = BITMAPINFOHEADER.init; |
22
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1308 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1309 bmiHeader.biWidth = width; |
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1310 bmiHeader.biHeight = -height; |
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1311 bmiHeader.biPlanes = 1; |
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1312 bmiHeader.biBitCount = 1; |
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1313 bmiHeader.biCompression = OS.BI_RGB; |
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1314 bmi = new byte[BITMAPINFOHEADER.sizeof + 8]; |
23 | 1315 *cast(BITMAPINFOHEADER*)bmi.ptr = bmiHeader; |
22
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1316 |
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1317 /* First color black, second color white */ |
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1318 int offset = BITMAPINFOHEADER.sizeof; |
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1319 bmi[offset + 4] = bmi[offset + 5] = bmi[offset + 6] = cast(byte)0xFF; |
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1320 bmi[offset + 7] = 0; |
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1321 OS.SelectObject(hBitmapDC, info.hbmMask); |
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1322 /* Call with null lpBits to get the image size */ |
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1323 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1324 OS.GetDIBits(hBitmapDC, info.hbmMask, 0, height, null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
1325 bmiHeader = *cast(BITMAPINFOHEADER*)bmi.ptr; | |
22
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1326 imageSize = bmiHeader.biSizeImage; |
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1327 maskData = new byte[imageSize]; |
23 | 1328 auto lpvMaskBits = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, imageSize); |
1329 if (lpvMaskBits is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1330 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1331 OS.GetDIBits(hBitmapDC, info.hbmMask, 0, height, lpvMaskBits, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
1332 maskData[] = (cast(byte*)lpvMaskBits)[ 0 .. imageSize ]; | |
22
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1333 OS.HeapFree(hHeap, 0, lpvMaskBits); |
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1334 /* Loop to invert the mask */ |
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1335 for (int i = 0; i < maskData.length; i++) { |
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1336 maskData[i] ^= -1; |
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1337 } |
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1338 /* Make sure mask scanlinePad is 2 */ |
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1339 int maskPad; |
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1340 int bpl = imageSize / height; |
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1341 for (maskPad = 1; maskPad < 128; maskPad++) { |
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1342 int calcBpl = (((width + 7) / 8) + (maskPad - 1)) / maskPad * maskPad; |
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1343 if (calcBpl is bpl) break; |
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1344 } |
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1345 maskData = ImageData.convertPad(maskData, width, height, 1, maskPad, 2); |
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1346 } |
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1347 /* Clean up */ |
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1348 OS.HeapFree(hHeap, 0, lpvBits); |
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1349 OS.SelectObject(hBitmapDC, hOldBitmap); |
23 | 1350 if (oldPalette !is null) { |
22
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1351 OS.SelectPalette(hBitmapDC, oldPalette, false); |
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1352 OS.RealizePalette(hBitmapDC); |
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1353 } |
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1354 OS.DeleteDC(hBitmapDC); |
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1355 |
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1356 /* Release the HDC for the device */ |
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1357 device.internal_dispose_GC(hDC, null); |
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1358 |
23 | 1359 if (info.hbmColor !is null) OS.DeleteObject(info.hbmColor); |
1360 if (info.hbmMask !is null) OS.DeleteObject(info.hbmMask); | |
22
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1361 /* Construct and return the ImageData */ |
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1362 ImageData imageData = new ImageData(width, height, depth, palette, 4, data); |
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1363 imageData.maskData = maskData; |
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1364 imageData.maskPad = 2; |
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1365 return imageData; |
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1366 } |
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1367 case DWT.BITMAP: { |
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1368 /* Get the basic BITMAP information */ |
23 | 1369 bm = BITMAP.init; |
1370 OS.GetObject(handle, BITMAP.sizeof, &bm); | |
22
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1371 depth = bm.bmPlanes * bm.bmBitsPixel; |
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1372 width = bm.bmWidth; |
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1373 height = bm.bmHeight; |
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1374 /* Find out whether this is a DIB or a DDB. */ |
23 | 1375 bool isDib = (bm.bmBits !is null); |
22
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1376 /* Get the HDC for the device */ |
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1377 auto hDC = device.internal_new_GC(null); |
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1378 |
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1379 /* |
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1380 * Feature in WinCE. GetDIBits is not available in WinCE. The |
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1381 * workaround is to create a temporary DIB from the DDB and use |
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1382 * the bmBits field of DIBSECTION to retrieve the image data. |
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1383 */ |
23 | 1384 auto handle = this.handle; |
22
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1385 if (OS.IsWinCE) { |
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1386 if (!isDib) { |
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1387 bool mustRestore = false; |
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1388 if (memGC !is null && !memGC.isDisposed()) { |
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1389 memGC.flush (); |
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1390 mustRestore = true; |
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1391 GCData data = memGC.data; |
23 | 1392 if (data.hNullBitmap !is null) { |
22
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1393 OS.SelectObject(memGC.handle, data.hNullBitmap); |
23 | 1394 data.hNullBitmap = null; |
22
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1395 } |
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1396 } |
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1397 handle = createDIBFromDDB(hDC, this.handle, width, height); |
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1398 if (mustRestore) { |
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1399 auto hOldBitmap = OS.SelectObject(memGC.handle, this.handle); |
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1400 memGC.data.hNullBitmap = hOldBitmap; |
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1401 } |
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1402 isDib = true; |
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1403 } |
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1404 } |
23 | 1405 DIBSECTION dib; |
22
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1406 if (isDib) { |
23 | 1407 OS.GetObject(handle, DIBSECTION.sizeof, &dib); |
22
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1408 } |
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1409 /* Calculate number of colors */ |
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1410 int numColors = 0; |
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1411 if (depth <= 8) { |
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1412 if (isDib) { |
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1413 numColors = dib.biClrUsed; |
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1414 } else { |
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1415 numColors = 1 << depth; |
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1416 } |
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1417 } |
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1418 /* Create the BITMAPINFO */ |
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1419 byte[] bmi = null; |
23 | 1420 BITMAPINFOHEADER bmiHeader; |
22
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1421 if (!isDib) { |
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1422 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1423 bmiHeader.biWidth = width; |
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1424 bmiHeader.biHeight = -height; |
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1425 bmiHeader.biPlanes = 1; |
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1426 bmiHeader.biBitCount = cast(short)depth; |
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1427 bmiHeader.biCompression = OS.BI_RGB; |
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1428 bmi = new byte[BITMAPINFOHEADER.sizeof + numColors * 4]; |
23 | 1429 *cast(BITMAPINFOHEADER*)bmi.ptr = bmiHeader; |
22
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1430 } |
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1431 |
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1432 /* Create the DC and select the bitmap */ |
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1433 auto hBitmapDC = OS.CreateCompatibleDC(hDC); |
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1434 auto hOldBitmap = OS.SelectObject(hBitmapDC, handle); |
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1435 /* Select the palette if necessary */ |
23 | 1436 HPALETTE oldPalette; |
22
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1437 if (!isDib && depth <= 8) { |
23 | 1438 auto hPalette = device.hPalette; |
1439 if (hPalette !is null) { | |
22
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1440 oldPalette = OS.SelectPalette(hBitmapDC, hPalette, false); |
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1441 OS.RealizePalette(hBitmapDC); |
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1442 } |
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1443 } |
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1444 /* Find the size of the image and allocate data */ |
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1445 int imageSize; |
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1446 if (isDib) { |
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1447 imageSize = dib.biSizeImage; |
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1448 } else { |
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1449 /* Call with null lpBits to get the image size */ |
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1450 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1451 OS.GetDIBits(hBitmapDC, handle, 0, height, null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
1452 bmiHeader = *cast(BITMAPINFOHEADER*)bmi.ptr; | |
22
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1453 imageSize = bmiHeader.biSizeImage; |
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1454 } |
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1455 byte[] data = new byte[imageSize]; |
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1456 /* Get the bitmap data */ |
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1457 if (isDib) { |
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1458 if (OS.IsWinCE && this.handle !is handle) { |
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1459 /* get image data from the temporary DIB */ |
23 | 1460 data[] = (cast(byte*)dib.bmBits)[ 0 .. imageSize ]; |
22
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1461 } else { |
23 | 1462 data[] = (cast(byte*)bm.bmBits)[ 0 .. imageSize ]; |
22
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1463 } |
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1464 } else { |
23 | 1465 auto hHeap = OS.GetProcessHeap(); |
1466 auto lpvBits = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, imageSize); | |
1467 if (lpvBits is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1468 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1469 OS.GetDIBits(hBitmapDC, handle, 0, height, lpvBits, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
1470 data[] = (cast(byte*)lpvBits)[ 0 .. imageSize ]; | |
22
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1471 OS.HeapFree(hHeap, 0, lpvBits); |
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1472 } |
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1473 /* Calculate the palette */ |
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1474 PaletteData palette = null; |
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1475 if (depth <= 8) { |
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1476 RGB[] rgbs = new RGB[numColors]; |
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1477 if (isDib) { |
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1478 if (OS.IsWinCE) { |
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1479 /* |
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1480 * Feature on WinCE. GetDIBColorTable is not supported. |
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1481 * The workaround is to set a pixel to the desired |
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1482 * palette index and use getPixel to get the corresponding |
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1483 * RGB value. |
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1484 */ |
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1485 int red = 0, green = 0, blue = 0; |
23 | 1486 byte* pBits = cast(byte*)bm.bmBits; |
22
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1487 byte oldValue = pBits[0]; |
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1488 int mask = (0xFF << (8 - bm.bmBitsPixel)) & 0x00FF; |
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1489 for (int i = 0; i < numColors; i++) { |
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1490 pBits[0] = cast(byte)((i << (8 - bm.bmBitsPixel)) | (pBits[0] & ~mask)); |
23 | 1491 //OS.MoveMemory(bm.bmBits, pBits, 1); |
22
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1492 int color = OS.GetPixel(hBitmapDC, 0, 0); |
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1493 blue = (color & 0xFF0000) >> 16; |
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1494 green = (color & 0xFF00) >> 8; |
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1495 red = color & 0xFF; |
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1496 rgbs[i] = new RGB(red, green, blue); |
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1497 } |
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1498 pBits[0] = oldValue; |
23 | 1499 //OS.MoveMemory(bm.bmBits, pBits, 1); |
22
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1500 } else { |
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1501 byte[] colors = new byte[numColors * 4]; |
23 | 1502 OS.GetDIBColorTable(hBitmapDC, 0, numColors, cast(RGBQUAD*)colors.ptr); |
22
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1503 int colorIndex = 0; |
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1504 for (int i = 0; i < rgbs.length; i++) { |
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1505 rgbs[i] = new RGB(colors[colorIndex + 2] & 0xFF, colors[colorIndex + 1] & 0xFF, colors[colorIndex] & 0xFF); |
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1506 colorIndex += 4; |
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1507 } |
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1508 } |
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1509 } else { |
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1510 int srcIndex = BITMAPINFOHEADER.sizeof; |
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1511 for (int i = 0; i < numColors; i++) { |
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1512 rgbs[i] = new RGB(bmi[srcIndex + 2] & 0xFF, bmi[srcIndex + 1] & 0xFF, bmi[srcIndex] & 0xFF); |
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1513 srcIndex += 4; |
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1514 } |
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1515 } |
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1516 palette = new PaletteData(rgbs); |
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1517 } else if (depth is 16) { |
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1518 palette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
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1519 } else if (depth is 24) { |
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1520 palette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
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1521 } else if (depth is 32) { |
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1522 palette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
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1523 } else { |
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1524 DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH); |
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1525 } |
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1526 /* Clean up */ |
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1527 OS.SelectObject(hBitmapDC, hOldBitmap); |
23 | 1528 if (oldPalette !is null) { |
22
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1529 OS.SelectPalette(hBitmapDC, oldPalette, false); |
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1530 OS.RealizePalette(hBitmapDC); |
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1531 } |
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1532 if (OS.IsWinCE) { |
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1533 if (handle !is this.handle) { |
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1534 /* free temporary DIB */ |
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1535 OS.DeleteObject (handle); |
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1536 } |
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1537 } |
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1538 OS.DeleteDC(hBitmapDC); |
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1539 |
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1540 /* Release the HDC for the device */ |
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1541 device.internal_dispose_GC(hDC, null); |
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1542 |
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1543 /* Construct and return the ImageData */ |
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1544 ImageData imageData = new ImageData(width, height, depth, palette, 4, data); |
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1545 imageData.transparentPixel = this.transparentPixel; |
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1546 imageData.alpha = alpha; |
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1547 if (alpha is -1 && alphaData !is null) { |
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1548 imageData.alphaData = new byte[alphaData.length]; |
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1549 System.arraycopy(alphaData, 0, imageData.alphaData, 0, alphaData.length); |
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1550 } |
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1551 return imageData; |
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1552 } |
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1553 default: |
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1554 DWT.error(DWT.ERROR_INVALID_IMAGE); |
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1555 return null; |
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1556 } |
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1557 } |
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1558 |
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1559 /** |
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1560 * Returns an integer hash code for the receiver. Any two |
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1561 * objects that return <code>true</code> when passed to |
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1562 * <code>equals</code> must return the same value for this |
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1563 * method. |
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1564 * |
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1565 * @return the receiver's hash |
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1566 * |
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1567 * @see #equals |
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1568 */ |
48
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1569 override public hash_t toHash () { |
22
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1570 return cast(hash_t)handle; |
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1571 } |
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1572 |
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1573 void init(Device device, int width, int height) { |
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1574 if (width <= 0 || height <= 0) { |
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1575 DWT.error (DWT.ERROR_INVALID_ARGUMENT); |
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1576 } |
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1577 this.device = device; |
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1578 type = DWT.BITMAP; |
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1579 auto hDC = device.internal_new_GC(null); |
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1580 handle = OS.CreateCompatibleBitmap(hDC, width, height); |
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1581 /* |
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1582 * Feature in Windows. CreateCompatibleBitmap() may fail |
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1583 * for large images. The fix is to create a DIB section |
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1584 * in that case. |
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1585 */ |
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1586 if (handle is null) { |
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1587 int bits = OS.GetDeviceCaps(hDC, OS.BITSPIXEL); |
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1588 int planes = OS.GetDeviceCaps(hDC, OS.PLANES); |
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1589 int depth = bits * planes; |
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1590 if (depth < 16) depth = 16; |
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1591 handle = createDIB(width, height, depth); |
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1592 } |
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1593 if (handle !is null) { |
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1594 auto memDC = OS.CreateCompatibleDC(hDC); |
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1595 auto hOldBitmap = OS.SelectObject(memDC, handle); |
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1596 OS.PatBlt(memDC, 0, 0, width, height, OS.PATCOPY); |
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1597 OS.SelectObject(memDC, hOldBitmap); |
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1598 OS.DeleteDC(memDC); |
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1599 } |
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1600 device.internal_dispose_GC(hDC, null); |
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1601 if (handle is null) { |
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1602 DWT.error(DWT.ERROR_NO_HANDLES, null, device.getLastError()); |
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1603 } |
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1604 } |
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1605 |
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1606 static HGDIOBJ createDIB(int width, int height, int depth) { |
23 | 1607 BITMAPINFOHEADER bmiHeader; |
22
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1608 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1609 bmiHeader.biWidth = width; |
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1610 bmiHeader.biHeight = -height; |
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1611 bmiHeader.biPlanes = 1; |
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1612 bmiHeader.biBitCount = cast(short)depth; |
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1613 if (OS.IsWinCE) bmiHeader.biCompression = OS.BI_BITFIELDS; |
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1614 else bmiHeader.biCompression = OS.BI_RGB; |
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1615 byte[] bmi = new byte[BITMAPINFOHEADER.sizeof + (OS.IsWinCE ? 12 : 0)]; |
23 | 1616 *cast(BITMAPINFOHEADER*)bmi.ptr = bmiHeader; |
22
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1617 /* Set the rgb colors into the bitmap info */ |
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1618 if (OS.IsWinCE) { |
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1619 int redMask = 0xFF00; |
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1620 int greenMask = 0xFF0000; |
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1621 int blueMask = 0xFF000000; |
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1622 /* big endian */ |
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1623 int offset = BITMAPINFOHEADER.sizeof; |
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1624 bmi[offset] = cast(byte)((redMask & 0xFF000000) >> 24); |
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1625 bmi[offset + 1] = cast(byte)((redMask & 0xFF0000) >> 16); |
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1626 bmi[offset + 2] = cast(byte)((redMask & 0xFF00) >> 8); |
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1627 bmi[offset + 3] = cast(byte)((redMask & 0xFF) >> 0); |
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1628 bmi[offset + 4] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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1629 bmi[offset + 5] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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1630 bmi[offset + 6] = cast(byte)((greenMask & 0xFF00) >> 8); |
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1631 bmi[offset + 7] = cast(byte)((greenMask & 0xFF) >> 0); |
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1632 bmi[offset + 8] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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1633 bmi[offset + 9] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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1634 bmi[offset + 10] = cast(byte)((blueMask & 0xFF00) >> 8); |
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1635 bmi[offset + 11] = cast(byte)((blueMask & 0xFF) >> 0); |
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1636 } |
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1637 |
23 | 1638 int pBits; |
1639 return OS.CreateDIBSection(null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS, &pBits, null, 0); | |
22
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1640 } |
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1641 |
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1642 /** |
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1643 * Feature in WinCE. GetIconInfo is not available in WinCE. |
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1644 * The workaround is to cache the object ImageData for images |
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1645 * of type DWT.ICON. The bitmaps hbmMask and hbmColor can then |
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1646 * be reconstructed by using our version of getIconInfo. |
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1647 * This function takes an ICONINFO object and sets the fields |
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1648 * hbmMask and hbmColor with the corresponding bitmaps it has |
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1649 * created. |
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1650 * Note. These bitmaps must be freed - as they would have to be |
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1651 * if the regular GetIconInfo had been used. |
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1652 */ |
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1653 static void GetIconInfo(Image image, ICONINFO* info) { |
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1654 int[] result = init(image.device, null, image.data); |
23 | 1655 info.hbmColor = cast(HBITMAP)result[0]; |
1656 info.hbmMask = cast(HBITMAP)result[1]; | |
22
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1657 } |
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1658 |
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1659 static int[] init(Device device, Image image, ImageData i) { |
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1660 if (image !is null) image.device = device; |
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1661 |
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1662 /* |
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1663 * BUG in Windows 98: |
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1664 * A monochrome DIBSection will display as solid black |
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1665 * on Windows 98 machines, even though it contains the |
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1666 * correct data. The fix is to convert 1-bit ImageData |
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1667 * into 4-bit ImageData before creating the image. |
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1668 */ |
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1669 /* Windows does not support 2-bit images. Convert to 4-bit image. */ |
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1670 if ((OS.IsWin95 && i.depth is 1 && i.getTransparencyType() !is DWT.TRANSPARENCY_MASK) || i.depth is 2) { |
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1671 ImageData img = new ImageData(i.width, i.height, 4, i.palette); |
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1672 ImageData.blit(ImageData.BLIT_SRC, |
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1673 i.data, i.depth, i.bytesPerLine, i.getByteOrder(), 0, 0, i.width, i.height, null, null, null, |
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1674 ImageData.ALPHA_OPAQUE, null, 0, 0, 0, |
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1675 img.data, img.depth, img.bytesPerLine, i.getByteOrder(), 0, 0, img.width, img.height, null, null, null, |
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1676 false, false); |
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1677 img.transparentPixel = i.transparentPixel; |
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1678 img.maskPad = i.maskPad; |
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1679 img.maskData = i.maskData; |
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1680 img.alpha = i.alpha; |
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1681 img.alphaData = i.alphaData; |
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1682 i = img; |
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1683 } |
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1684 /* |
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1685 * Windows supports 16-bit mask of (0x7C00, 0x3E0, 0x1F), |
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1686 * 24-bit mask of (0xFF0000, 0xFF00, 0xFF) and 32-bit mask |
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1687 * (0x00FF0000, 0x0000FF00, 0x000000FF) as documented in |
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1688 * MSDN BITMAPINFOHEADER. Make sure the image is |
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1689 * Windows-supported. |
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1690 */ |
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1691 /* |
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1692 * Note on WinCE. CreateDIBSection requires the biCompression |
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1693 * field of the BITMAPINFOHEADER to be set to BI_BITFIELDS for |
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1694 * 16 and 32 bit direct images (see MSDN for CreateDIBSection). |
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1695 * In this case, the color mask can be set to any value. For |
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1696 * consistency, it is set to the same mask used by non WinCE |
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1697 * platforms in BI_RGB mode. |
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1698 */ |
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1699 if (i.palette.isDirect) { |
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1700 final PaletteData palette = i.palette; |
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1701 final int redMask = palette.redMask; |
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1702 final int greenMask = palette.greenMask; |
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1703 final int blueMask = palette.blueMask; |
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1704 int newDepth = i.depth; |
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1705 int newOrder = ImageData.MSB_FIRST; |
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1706 PaletteData newPalette = null; |
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1707 |
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1708 switch (i.depth) { |
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1709 case 8: |
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1710 newDepth = 16; |
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1711 newOrder = ImageData.LSB_FIRST; |
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1712 newPalette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
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1713 break; |
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1714 case 16: |
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1715 newOrder = ImageData.LSB_FIRST; |
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1716 if (!(redMask is 0x7C00 && greenMask is 0x3E0 && blueMask is 0x1F)) { |
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1717 newPalette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
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1718 } |
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1719 break; |
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1720 case 24: |
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1721 if (!(redMask is 0xFF && greenMask is 0xFF00 && blueMask is 0xFF0000)) { |
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1722 newPalette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
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1723 } |
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1724 break; |
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1725 case 32: |
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1726 if (!(redMask is 0xFF00 && greenMask is 0xFF0000 && blueMask is 0xFF000000)) { |
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1727 newPalette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
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1728 } |
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1729 break; |
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1730 default: |
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1731 DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH); |
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1732 } |
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1733 if (newPalette !is null) { |
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1734 ImageData img = new ImageData(i.width, i.height, newDepth, newPalette); |
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1735 ImageData.blit(ImageData.BLIT_SRC, |
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1736 i.data, i.depth, i.bytesPerLine, i.getByteOrder(), 0, 0, i.width, i.height, redMask, greenMask, blueMask, |
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1737 ImageData.ALPHA_OPAQUE, null, 0, 0, 0, |
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1738 img.data, img.depth, img.bytesPerLine, newOrder, 0, 0, img.width, img.height, newPalette.redMask, newPalette.greenMask, newPalette.blueMask, |
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1739 false, false); |
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1740 if (i.transparentPixel !is -1) { |
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1741 img.transparentPixel = newPalette.getPixel(palette.getRGB(i.transparentPixel)); |
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1742 } |
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1743 img.maskPad = i.maskPad; |
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1744 img.maskData = i.maskData; |
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1745 img.alpha = i.alpha; |
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1746 img.alphaData = i.alphaData; |
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1747 i = img; |
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1748 } |
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1749 } |
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1750 /* Construct bitmap info header by hand */ |
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1751 RGB[] rgbs = i.palette.getRGBs(); |
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1752 bool useBitfields = OS.IsWinCE && (i.depth is 16 || i.depth is 32); |
23 | 1753 BITMAPINFOHEADER bmiHeader; |
22
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1754 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1755 bmiHeader.biWidth = i.width; |
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1756 bmiHeader.biHeight = -i.height; |
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1757 bmiHeader.biPlanes = 1; |
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1758 bmiHeader.biBitCount = cast(short)i.depth; |
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1759 if (useBitfields) bmiHeader.biCompression = OS.BI_BITFIELDS; |
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1760 else bmiHeader.biCompression = OS.BI_RGB; |
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1761 bmiHeader.biClrUsed = rgbs is null ? 0 : rgbs.length; |
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1762 byte[] bmi; |
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1763 if (i.palette.isDirect) |
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1764 bmi = new byte[BITMAPINFOHEADER.sizeof + (useBitfields ? 12 : 0)]; |
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1765 else |
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1766 bmi = new byte[BITMAPINFOHEADER.sizeof + rgbs.length * 4]; |
23 | 1767 *cast(BITMAPINFOHEADER*)bmi.ptr = bmiHeader; |
22
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1768 /* Set the rgb colors into the bitmap info */ |
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1769 int offset = BITMAPINFOHEADER.sizeof; |
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1770 if (i.palette.isDirect) { |
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1771 if (useBitfields) { |
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1772 PaletteData palette = i.palette; |
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1773 int redMask = palette.redMask; |
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1774 int greenMask = palette.greenMask; |
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1775 int blueMask = palette.blueMask; |
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1776 /* |
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1777 * The color masks must be written based on the |
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1778 * endianness of the ImageData. |
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1779 */ |
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1780 if (i.getByteOrder() is ImageData.LSB_FIRST) { |
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1781 bmi[offset] = cast(byte)((redMask & 0xFF) >> 0); |
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1782 bmi[offset + 1] = cast(byte)((redMask & 0xFF00) >> 8); |
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1783 bmi[offset + 2] = cast(byte)((redMask & 0xFF0000) >> 16); |
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1784 bmi[offset + 3] = cast(byte)((redMask & 0xFF000000) >> 24); |
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1785 bmi[offset + 4] = cast(byte)((greenMask & 0xFF) >> 0); |
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1786 bmi[offset + 5] = cast(byte)((greenMask & 0xFF00) >> 8); |
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1787 bmi[offset + 6] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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1788 bmi[offset + 7] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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1789 bmi[offset + 8] = cast(byte)((blueMask & 0xFF) >> 0); |
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1790 bmi[offset + 9] = cast(byte)((blueMask & 0xFF00) >> 8); |
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1791 bmi[offset + 10] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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1792 bmi[offset + 11] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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1793 } else { |
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1794 bmi[offset] = cast(byte)((redMask & 0xFF000000) >> 24); |
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1795 bmi[offset + 1] = cast(byte)((redMask & 0xFF0000) >> 16); |
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1796 bmi[offset + 2] = cast(byte)((redMask & 0xFF00) >> 8); |
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1797 bmi[offset + 3] = cast(byte)((redMask & 0xFF) >> 0); |
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1798 bmi[offset + 4] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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1799 bmi[offset + 5] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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1800 bmi[offset + 6] = cast(byte)((greenMask & 0xFF00) >> 8); |
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1801 bmi[offset + 7] = cast(byte)((greenMask & 0xFF) >> 0); |
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1802 bmi[offset + 8] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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1803 bmi[offset + 9] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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1804 bmi[offset + 10] = cast(byte)((blueMask & 0xFF00) >> 8); |
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1805 bmi[offset + 11] = cast(byte)((blueMask & 0xFF) >> 0); |
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1806 } |
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1807 } |
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1808 } else { |
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1809 for (int j = 0; j < rgbs.length; j++) { |
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1810 bmi[offset] = cast(byte)rgbs[j].blue; |
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1811 bmi[offset + 1] = cast(byte)rgbs[j].green; |
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1812 bmi[offset + 2] = cast(byte)rgbs[j].red; |
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1813 bmi[offset + 3] = 0; |
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1814 offset += 4; |
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1815 } |
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1816 } |
23 | 1817 int pBits; |
1818 auto hDib = OS.CreateDIBSection(null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS, &pBits, null, 0); | |
1819 if (hDib is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1820 /* In case of a scanline pad other than 4, do the work to convert it */ |
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1821 byte[] data = i.data; |
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1822 if (i.scanlinePad !is 4 && (i.bytesPerLine % 4 !is 0)) { |
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1823 data = ImageData.convertPad(data, i.width, i.height, i.depth, i.scanlinePad, 4); |
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1824 } |
23 | 1825 //OS.MoveMemory(pBits[0], data, data.length); |
22
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1826 |
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1827 int[] result = null; |
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1828 if (i.getTransparencyType() is DWT.TRANSPARENCY_MASK) { |
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1829 /* Get the HDC for the device */ |
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1830 auto hDC = device.internal_new_GC(null); |
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1831 |
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1832 /* Create the color bitmap */ |
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1833 auto hdcSrc = OS.CreateCompatibleDC(hDC); |
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1834 OS.SelectObject(hdcSrc, hDib); |
23 | 1835 auto hBitmap = OS.CreateCompatibleBitmap(hDC, i.width, i.height); |
1836 if (hBitmap is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1837 auto hdcDest = OS.CreateCompatibleDC(hDC); |
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1838 OS.SelectObject(hdcDest, hBitmap); |
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1839 OS.BitBlt(hdcDest, 0, 0, i.width, i.height, hdcSrc, 0, 0, OS.SRCCOPY); |
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1840 |
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1841 /* Release the HDC for the device */ |
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1842 device.internal_dispose_GC(hDC, null); |
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1843 |
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1844 /* Create the mask. Windows requires icon masks to have a scanline pad of 2. */ |
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1845 byte[] maskData = ImageData.convertPad(i.maskData, i.width, i.height, 1, i.maskPad, 2); |
23 | 1846 auto hMask = OS.CreateBitmap(i.width, i.height, 1, 1, maskData.ptr); |
1847 if (hMask is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1848 OS.SelectObject(hdcSrc, hMask); |
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1849 OS.PatBlt(hdcSrc, 0, 0, i.width, i.height, OS.DSTINVERT); |
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1850 OS.DeleteDC(hdcSrc); |
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1851 OS.DeleteDC(hdcDest); |
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1852 OS.DeleteObject(hDib); |
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1853 |
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1854 if (image is null) { |
23 | 1855 result = [ cast(int) hBitmap, cast(int) hMask]; |
22
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1856 } else { |
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1857 /* Create the icon */ |
23 | 1858 ICONINFO info; |
22
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1859 info.fIcon = true; |
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1860 info.hbmColor = hBitmap; |
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1861 info.hbmMask = hMask; |
23 | 1862 auto hIcon = OS.CreateIconIndirect(&info); |
1863 if (hIcon is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1864 OS.DeleteObject(hBitmap); |
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1865 OS.DeleteObject(hMask); |
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1866 image.handle = hIcon; |
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1867 image.type = DWT.ICON; |
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1868 if (OS.IsWinCE) image.data = i; |
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1869 } |
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1870 } else { |
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1871 if (image is null) { |
23 | 1872 result = [ cast(int) hDib]; |
22
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1873 } else { |
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1874 image.handle = hDib; |
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1875 image.type = DWT.BITMAP; |
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1876 image.transparentPixel = i.transparentPixel; |
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1877 if (image.transparentPixel is -1) { |
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1878 image.alpha = i.alpha; |
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1879 if (i.alpha is -1 && i.alphaData !is null) { |
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1880 int length = i.alphaData.length; |
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1881 image.alphaData = new byte[length]; |
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1882 System.arraycopy(i.alphaData, 0, image.alphaData, 0, length); |
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1883 } |
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1884 } |
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1885 } |
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1886 } |
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1887 return result; |
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1888 } |
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1889 |
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1890 static int[] init(Device device, Image image, ImageData source, ImageData mask) { |
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1891 /* Create a temporary image and locate the black pixel */ |
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1892 ImageData imageData; |
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1893 int blackIndex = 0; |
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1894 if (source.palette.isDirect) { |
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1895 imageData = new ImageData(source.width, source.height, source.depth, source.palette); |
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1896 } else { |
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1897 RGB black = new RGB(0, 0, 0); |
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1898 RGB[] rgbs = source.getRGBs(); |
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1899 if (source.transparentPixel !is -1) { |
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1900 /* |
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1901 * The source had transparency, so we can use the transparent pixel |
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1902 * for black. |
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1903 */ |
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1904 RGB[] newRGBs = new RGB[rgbs.length]; |
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1905 System.arraycopy(rgbs, 0, newRGBs, 0, rgbs.length); |
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1906 if (source.transparentPixel >= newRGBs.length) { |
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1907 /* Grow the palette with black */ |
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1908 rgbs = new RGB[source.transparentPixel + 1]; |
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1909 System.arraycopy(newRGBs, 0, rgbs, 0, newRGBs.length); |
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1910 for (int i = newRGBs.length; i <= source.transparentPixel; i++) { |
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1911 rgbs[i] = new RGB(0, 0, 0); |
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1912 } |
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1913 } else { |
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1914 newRGBs[source.transparentPixel] = black; |
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1915 rgbs = newRGBs; |
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1916 } |
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1917 blackIndex = source.transparentPixel; |
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1918 imageData = new ImageData(source.width, source.height, source.depth, new PaletteData(rgbs)); |
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1919 } else { |
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1920 while (blackIndex < rgbs.length) { |
23 | 1921 if (rgbs[blackIndex] ==/*eq*/ black) break; |
22
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1922 blackIndex++; |
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1923 } |
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1924 if (blackIndex is rgbs.length) { |
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1925 /* |
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1926 * We didn't find black in the palette, and there is no transparent |
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1927 * pixel we can use. |
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1928 */ |
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1929 if ((1 << source.depth) > rgbs.length) { |
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1930 /* We can grow the palette and add black */ |
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1931 RGB[] newRGBs = new RGB[rgbs.length + 1]; |
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1932 System.arraycopy(rgbs, 0, newRGBs, 0, rgbs.length); |
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1933 newRGBs[rgbs.length] = black; |
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1934 rgbs = newRGBs; |
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1935 } else { |
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1936 /* No room to grow the palette */ |
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1937 blackIndex = -1; |
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1938 } |
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1939 } |
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1940 imageData = new ImageData(source.width, source.height, source.depth, new PaletteData(rgbs)); |
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1941 } |
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1942 } |
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1943 if (blackIndex is -1) { |
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1944 /* There was no black in the palette, so just copy the data over */ |
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1945 System.arraycopy(source.data, 0, imageData.data, 0, imageData.data.length); |
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1946 } else { |
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1947 /* Modify the source image to contain black wherever the mask is 0 */ |
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1948 int[] imagePixels = new int[imageData.width]; |
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1949 int[] maskPixels = new int[mask.width]; |
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1950 for (int y = 0; y < imageData.height; y++) { |
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1951 source.getPixels(0, y, imageData.width, imagePixels, 0); |
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1952 mask.getPixels(0, y, mask.width, maskPixels, 0); |
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1953 for (int i = 0; i < imagePixels.length; i++) { |
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1954 if (maskPixels[i] is 0) imagePixels[i] = blackIndex; |
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1955 } |
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1956 imageData.setPixels(0, y, source.width, imagePixels, 0); |
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1957 } |
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1958 } |
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1959 imageData.maskPad = mask.scanlinePad; |
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1960 imageData.maskData = mask.data; |
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1961 return init(device, image, imageData); |
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1962 } |
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1963 void init(Device device, ImageData i) { |
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1964 if (i is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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1965 init(device, this, i); |
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1966 } |
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1967 |
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1968 /** |
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1969 * Invokes platform specific functionality to allocate a new GC handle. |
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1970 * <p> |
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1971 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public |
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1972 * API for <code>Image</code>. It is marked public only so that it |
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1973 * can be shared within the packages provided by DWT. It is not |
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1974 * available on all platforms, and should never be called from |
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1975 * application code. |
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1976 * </p> |
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1977 * |
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1978 * @param data the platform specific GC data |
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1979 * @return the platform specific GC handle |
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1980 */ |
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1981 public HDC internal_new_GC (GCData data) { |
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1982 if (handle is null) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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1983 /* |
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1984 * Create a new GC that can draw into the image. |
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1985 * Only supported for bitmaps. |
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1986 */ |
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1987 if (type !is DWT.BITMAP || memGC !is null) { |
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1988 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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1989 } |
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1990 |
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1991 /* Create a compatible HDC for the device */ |
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1992 auto hDC = device.internal_new_GC(null); |
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1993 auto imageDC = OS.CreateCompatibleDC(hDC); |
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1994 device.internal_dispose_GC(hDC, null); |
23 | 1995 if (imageDC is null) DWT.error(DWT.ERROR_NO_HANDLES); |
22
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1996 |
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1997 if (data !is null) { |
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1998 /* Set the GCData fields */ |
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1999 int mask = DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT; |
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2000 if ((data.style & mask) !is 0) { |
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2001 data.layout = (data.style & DWT.RIGHT_TO_LEFT) !is 0 ? OS.LAYOUT_RTL : 0; |
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2002 } else { |
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2003 data.style |= DWT.LEFT_TO_RIGHT; |
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2004 } |
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2005 data.device = device; |
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2006 data.image = this; |
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2007 data.hFont = device.systemFont; |
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2008 } |
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2009 return imageDC; |
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2010 } |
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2011 |
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2012 /** |
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2013 * Invokes platform specific functionality to dispose a GC handle. |
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2014 * <p> |
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2015 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public |
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2016 * API for <code>Image</code>. It is marked public only so that it |
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2017 * can be shared within the packages provided by DWT. It is not |
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2018 * available on all platforms, and should never be called from |
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2019 * application code. |
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2020 * </p> |
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2021 * |
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2022 * @param hDC the platform specific GC handle |
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2023 * @param data the platform specific GC data |
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2024 */ |
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2025 public void internal_dispose_GC (HDC hDC, GCData data) { |
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2026 OS.DeleteDC(hDC); |
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2027 } |
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2028 |
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2029 /** |
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2030 * Returns <code>true</code> if the image has been disposed, |
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2031 * and <code>false</code> otherwise. |
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2032 * <p> |
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2033 * This method gets the dispose state for the image. |
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2034 * When an image has been disposed, it is an error to |
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2035 * invoke any other method using the image. |
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2036 * |
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2037 * @return <code>true</code> when the image is disposed and <code>false</code> otherwise |
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2038 */ |
48
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2039 override public bool isDisposed() { |
22
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2040 return handle is null; |
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2041 } |
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2042 |
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2043 /** |
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2044 * Sets the color to which to map the transparent pixel. |
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2045 * <p> |
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2046 * There are certain uses of <code>Images</code> that do not support |
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2047 * transparency (for example, setting an image into a button or label). |
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2048 * In these cases, it may be desired to simulate transparency by using |
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2049 * the background color of the widget to paint the transparent pixels |
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2050 * of the image. This method specifies the color that will be used in |
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2051 * these cases. For example: |
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2052 * <pre> |
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2053 * Button b = new Button(); |
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2054 * image.setBackground(b.getBackground()); |
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2055 * b.setImage(image); |
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2056 * </pre> |
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2057 * </p><p> |
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2058 * The image may be modified by this operation (in effect, the |
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2059 * transparent regions may be filled with the supplied color). Hence |
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2060 * this operation is not reversible and it is not legal to call |
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2061 * this function twice or with a null argument. |
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2062 * </p><p> |
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2063 * This method has no effect if the receiver does not have a transparent |
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2064 * pixel value. |
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2065 * </p> |
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2066 * |
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2067 * @param color the color to use when a transparent pixel is specified |
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2068 * |
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2069 * @exception IllegalArgumentException <ul> |
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2070 * <li>ERROR_NULL_ARGUMENT - if the color is null</li> |
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2071 * <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li> |
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2072 * </ul> |
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2073 * @exception DWTException <ul> |
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2074 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
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2075 * </ul> |
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2076 */ |
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2077 public void setBackground(Color color) { |
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2078 /* |
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2079 * Note. Not implemented on WinCE. |
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2080 */ |
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2081 if (OS.IsWinCE) return; |
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2082 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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2083 if (color is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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2084 if (color.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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2085 if (transparentPixel is -1) return; |
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2086 |
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2087 /* Get the HDC for the device */ |
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2088 auto hDC = device.internal_new_GC(null); |
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2089 |
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2090 /* Change the background color in the image */ |
23 | 2091 BITMAP bm; |
2092 OS.GetObject(handle, BITMAP.sizeof, &bm); | |
22
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2093 auto hdcMem = OS.CreateCompatibleDC(hDC); |
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2094 OS.SelectObject(hdcMem, handle); |
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2095 int maxColors = 1 << bm.bmBitsPixel; |
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2096 byte[] colors = new byte[maxColors * 4]; |
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2097 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 2098 int numColors = OS.GetDIBColorTable(hdcMem, 0, maxColors, cast(RGBQUAD*)colors.ptr); |
22
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2099 int offset = transparentPixel * 4; |
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2100 colors[offset] = cast(byte)color.getBlue(); |
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2101 colors[offset + 1] = cast(byte)color.getGreen(); |
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2102 colors[offset + 2] = cast(byte)color.getRed(); |
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2103 if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 2104 OS.SetDIBColorTable(hdcMem, 0, numColors, cast(RGBQUAD*)colors.ptr); |
22
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2105 OS.DeleteDC(hdcMem); |
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2106 |
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2107 /* Release the HDC for the device */ |
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2108 device.internal_dispose_GC(hDC, null); |
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2109 } |
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2110 |
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2111 /** |
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2112 * Returns a string containing a concise, human-readable |
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2113 * description of the receiver. |
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2114 * |
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2115 * @return a string representation of the receiver |
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2116 */ |
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2117 override public char[] toString () { |
22
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2118 if (isDisposed()) return "Image {*DISPOSED*}"; |
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2119 return Format( "Image {{{}}", handle ); |
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2120 } |
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2121 |
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2122 /** |
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2123 * Invokes platform specific functionality to allocate a new image. |
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2124 * <p> |
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2125 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public |
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2126 * API for <code>Image</code>. It is marked public only so that it |
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2127 * can be shared within the packages provided by DWT. It is not |
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2128 * available on all platforms, and should never be called from |
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2129 * application code. |
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2130 * </p> |
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2131 * |
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2132 * @param device the device on which to allocate the color |
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2133 * @param type the type of the image (<code>DWT.BITMAP</code> or <code>DWT.ICON</code>) |
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2134 * @param handle the OS handle for the image |
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2135 * @return a new image object containing the specified device, type and handle |
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2136 */ |
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2137 public static Image win32_new(Device device, int type, HGDIOBJ handle) { |
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2138 if (device is null) device = Device.getDevice(); |
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2139 Image image = new Image(); |
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2140 image.type = type; |
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2141 image.handle = handle; |
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2142 image.device = device; |
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2143 return image; |
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2144 } |
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2145 |
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2146 } |