Mercurial > projects > dwt-win
annotate dwt/graphics/Image.d @ 302:555d58850cd9
Omit array bounds checking on dynamic struct length.
author | Frank Benoit <benoit@tionex.de> |
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date | Fri, 29 Aug 2008 04:26:26 +0200 |
parents | fd9c62a2998e |
children | eddc0e013cb8 |
rev | line source |
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1 /******************************************************************************* |
246 | 2 * Copyright (c) 2000, 2008 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> | |
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12 *******************************************************************************/ |
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13 module dwt.graphics.Image; |
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14 |
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15 import tango.util.log.Trace; |
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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 |
246 | 87 * @see <a href="http://www.eclipse.org/swt/snippets/#image">Image snippets</a> |
88 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Examples: GraphicsExample, ImageAnalyzer</a> | |
89 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
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90 */ |
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91 |
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92 public final class Image : Resource, Drawable { |
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93 |
213 | 94 alias Resource.init_ init_; |
95 | |
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96 /** |
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97 * specifies whether the receiver is a bitmap or an icon |
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98 * (one of <code>DWT.BITMAP</code>, <code>DWT.ICON</code>) |
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99 * <p> |
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100 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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101 * public API. It is marked public only so that it can be shared |
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102 * within the packages provided by DWT. It is not available on all |
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103 * platforms and should never be accessed from application code. |
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104 * </p> |
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105 */ |
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106 public int type; |
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107 |
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108 /** |
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109 * the handle to the OS image resource |
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110 * (Warning: This field is platform dependent) |
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111 * <p> |
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112 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT |
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113 * public API. It is marked public only so that it can be shared |
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114 * within the packages provided by DWT. It is not available on all |
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115 * platforms and should never be accessed from application code. |
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116 * </p> |
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117 */ |
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118 public HGDIOBJ handle; |
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119 |
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120 /** |
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121 * specifies the transparent pixel |
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122 */ |
246 | 123 int transparentPixel = -1, transparentColor = -1; |
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124 |
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125 /** |
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126 * the GC which is drawing on the image |
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127 */ |
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128 GC memGC; |
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129 |
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130 /** |
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131 * the alpha data for the image |
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132 */ |
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133 byte[] alphaData; |
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134 |
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135 /** |
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136 * the global alpha value to be used for every pixel |
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137 */ |
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138 int alpha = -1; |
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139 |
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140 /** |
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141 * the image data used to create this image if it is a |
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142 * icon. Used only in WinCE |
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143 */ |
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144 ImageData data; |
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145 |
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146 /** |
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147 * width of the image |
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148 */ |
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149 int width = -1; |
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150 |
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151 /** |
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152 * height of the image |
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153 */ |
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154 int height = -1; |
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155 |
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156 /** |
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157 * specifies the default scanline padding |
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158 */ |
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159 static const int DEFAULT_SCANLINE_PAD = 4; |
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160 |
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161 /** |
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162 * Prevents uninitialized instances from being created outside the package. |
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163 */ |
213 | 164 this (Device device) { |
165 super(device); | |
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166 } |
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167 |
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168 /** |
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169 * Constructs an empty instance of this class with the |
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170 * specified width and height. The result may be drawn upon |
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171 * by creating a GC and using any of its drawing operations, |
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172 * as shown in the following example: |
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173 * <pre> |
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174 * Image i = new Image(device, width, height); |
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175 * GC gc = new GC(i); |
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176 * gc.drawRectangle(0, 0, 50, 50); |
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177 * gc.dispose(); |
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178 * </pre> |
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179 * <p> |
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180 * Note: Some platforms may have a limitation on the size |
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181 * of image that can be created (size depends on width, height, |
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182 * and depth). For example, Windows 95, 98, and ME do not allow |
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183 * images larger than 16M. |
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184 * </p> |
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185 * |
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186 * @param device the device on which to create the image |
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187 * @param width the width of the new image |
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188 * @param height the height of the new image |
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189 * |
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190 * @exception IllegalArgumentException <ul> |
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191 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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192 * <li>ERROR_INVALID_ARGUMENT - if either the width or height is negative or zero</li> |
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193 * </ul> |
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194 * @exception DWTError <ul> |
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195 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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196 * </ul> |
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197 */ |
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198 public this(Device device, int width, int height) { |
213 | 199 super(device); |
200 init_(width, height); | |
201 init_(); | |
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202 } |
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203 |
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204 /** |
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205 * Constructs a new instance of this class based on the |
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206 * provided image, with an appearance that varies depending |
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207 * on the value of the flag. The possible flag values are: |
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208 * <dl> |
246 | 209 * <dt><b>{@link DWT#IMAGE_COPY}</b></dt> |
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210 * <dd>the result is an identical copy of srcImage</dd> |
246 | 211 * <dt><b>{@link DWT#IMAGE_DISABLE}</b></dt> |
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212 * <dd>the result is a copy of srcImage which has a <em>disabled</em> look</dd> |
246 | 213 * <dt><b>{@link DWT#IMAGE_GRAY}</b></dt> |
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214 * <dd>the result is a copy of srcImage which has a <em>gray scale</em> look</dd> |
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215 * </dl> |
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216 * |
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217 * @param device the device on which to create the image |
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218 * @param srcImage the image to use as the source |
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219 * @param flag the style, either <code>IMAGE_COPY</code>, <code>IMAGE_DISABLE</code> or <code>IMAGE_GRAY</code> |
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220 * |
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221 * @exception IllegalArgumentException <ul> |
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222 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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223 * <li>ERROR_NULL_ARGUMENT - if srcImage is null</li> |
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224 * <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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225 * <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</li> |
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226 * </ul> |
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227 * @exception DWTException <ul> |
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228 * <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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229 * <li>ERROR_UNSUPPORTED_DEPTH - if the depth of the image is not supported</li> |
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230 * </ul> |
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231 * @exception DWTError <ul> |
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232 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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233 * </ul> |
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234 */ |
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235 public this(Device device, Image srcImage, int flag) { |
213 | 236 super(device); |
237 device = this.device; | |
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238 if (srcImage is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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239 if (srcImage.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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240 Rectangle rect = srcImage.getBounds(); |
213 | 241 this.type = srcImage.type; |
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242 switch (flag) { |
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243 case DWT.IMAGE_COPY: { |
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244 switch (type) { |
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245 case DWT.BITMAP: |
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246 /* Get the HDC for the device */ |
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247 auto hDC = device.internal_new_GC(null); |
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248 |
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249 /* Copy the bitmap */ |
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250 auto hdcSource = OS.CreateCompatibleDC(hDC); |
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251 auto hdcDest = OS.CreateCompatibleDC(hDC); |
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252 auto hOldSrc = OS.SelectObject(hdcSource, srcImage.handle); |
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253 BITMAP bm; |
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254 OS.GetObject(srcImage.handle, BITMAP.sizeof, &bm); |
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255 handle = OS.CreateCompatibleBitmap(hdcSource, rect.width, bm.bmBits !is null ? -rect.height : rect.height); |
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256 if (handle is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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257 auto hOldDest = OS.SelectObject(hdcDest, handle); |
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258 OS.BitBlt(hdcDest, 0, 0, rect.width, rect.height, hdcSource, 0, 0, OS.SRCCOPY); |
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259 OS.SelectObject(hdcSource, hOldSrc); |
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260 OS.SelectObject(hdcDest, hOldDest); |
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261 OS.DeleteDC(hdcSource); |
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262 OS.DeleteDC(hdcDest); |
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263 |
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264 /* Release the HDC for the device */ |
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265 device.internal_dispose_GC(hDC, null); |
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266 |
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267 transparentPixel = srcImage.transparentPixel; |
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268 alpha = srcImage.alpha; |
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269 if (srcImage.alphaData !is null) { |
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270 alphaData = new byte[srcImage.alphaData.length]; |
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271 System.arraycopy(srcImage.alphaData, 0, alphaData, 0, alphaData.length); |
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272 } |
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273 break; |
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274 case DWT.ICON: |
117 | 275 static if (OS.IsWinCE) { |
213 | 276 init_(srcImage.data); |
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277 } else { |
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278 handle = OS.CopyImage(srcImage.handle, OS.IMAGE_ICON, rect.width, rect.height, 0); |
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279 if (handle is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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280 } |
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281 break; |
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282 default: |
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283 DWT.error(DWT.ERROR_INVALID_IMAGE); |
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284 } |
213 | 285 break; |
22
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286 } |
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287 case DWT.IMAGE_DISABLE: { |
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288 ImageData data = srcImage.getImageData(); |
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289 PaletteData palette = data.palette; |
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290 RGB[] rgbs = new RGB[3]; |
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291 rgbs[0] = device.getSystemColor(DWT.COLOR_BLACK).getRGB(); |
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292 rgbs[1] = device.getSystemColor(DWT.COLOR_WIDGET_NORMAL_SHADOW).getRGB(); |
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293 rgbs[2] = device.getSystemColor(DWT.COLOR_WIDGET_BACKGROUND).getRGB(); |
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294 ImageData newData = new ImageData(rect.width, rect.height, 8, new PaletteData(rgbs)); |
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295 newData.alpha = data.alpha; |
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296 newData.alphaData = data.alphaData; |
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297 newData.maskData = data.maskData; |
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298 newData.maskPad = data.maskPad; |
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299 if (data.transparentPixel !is -1) newData.transparentPixel = 0; |
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300 |
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301 /* Convert the pixels. */ |
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302 int[] scanline = new int[rect.width]; |
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303 int[] maskScanline = null; |
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304 ImageData mask = null; |
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305 if (data.maskData !is null) mask = data.getTransparencyMask(); |
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306 if (mask !is null) maskScanline = new int[rect.width]; |
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307 int redMask = palette.redMask; |
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308 int greenMask = palette.greenMask; |
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309 int blueMask = palette.blueMask; |
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310 int redShift = palette.redShift; |
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311 int greenShift = palette.greenShift; |
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312 int blueShift = palette.blueShift; |
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313 for (int y=0; y<rect.height; y++) { |
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314 int offset = y * newData.bytesPerLine; |
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315 data.getPixels(0, y, rect.width, scanline, 0); |
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316 if (mask !is null) mask.getPixels(0, y, rect.width, maskScanline, 0); |
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317 for (int x=0; x<rect.width; x++) { |
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318 int pixel = scanline[x]; |
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319 if (!((data.transparentPixel !is -1 && pixel is data.transparentPixel) || (mask !is null && maskScanline[x] is 0))) { |
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320 int red, green, blue; |
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321 if (palette.isDirect) { |
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322 red = pixel & redMask; |
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323 red = (redShift < 0) ? red >>> -redShift : red << redShift; |
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324 green = pixel & greenMask; |
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325 green = (greenShift < 0) ? green >>> -greenShift : green << greenShift; |
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326 blue = pixel & blueMask; |
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327 blue = (blueShift < 0) ? blue >>> -blueShift : blue << blueShift; |
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328 } else { |
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329 red = palette.colors[pixel].red; |
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330 green = palette.colors[pixel].green; |
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331 blue = palette.colors[pixel].blue; |
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332 } |
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333 int intensity = red * red + green * green + blue * blue; |
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334 if (intensity < 98304) { |
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335 newData.data[offset] = cast(byte)1; |
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336 } else { |
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337 newData.data[offset] = cast(byte)2; |
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338 } |
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339 } |
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340 offset++; |
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341 } |
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342 } |
213 | 343 init_ (newData); |
344 break; | |
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345 } |
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346 case DWT.IMAGE_GRAY: { |
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347 ImageData data = srcImage.getImageData(); |
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348 PaletteData palette = data.palette; |
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349 ImageData newData = data; |
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350 if (!palette.isDirect) { |
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351 /* Convert the palette entries to gray. */ |
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352 RGB [] rgbs = palette.getRGBs(); |
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353 for (int i=0; i<rgbs.length; i++) { |
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354 if (data.transparentPixel !is i) { |
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355 RGB color = rgbs [i]; |
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356 int red = color.red; |
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357 int green = color.green; |
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358 int blue = color.blue; |
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359 int intensity = (red+red+green+green+green+green+green+blue) >> 3; |
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360 color.red = color.green = color.blue = intensity; |
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361 } |
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362 } |
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363 newData.palette = new PaletteData(rgbs); |
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364 } else { |
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365 /* Create a 8 bit depth image data with a gray palette. */ |
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366 RGB[] rgbs = new RGB[256]; |
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367 for (int i=0; i<rgbs.length; i++) { |
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368 rgbs[i] = new RGB(i, i, i); |
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369 } |
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370 newData = new ImageData(rect.width, rect.height, 8, new PaletteData(rgbs)); |
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371 newData.alpha = data.alpha; |
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372 newData.alphaData = data.alphaData; |
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373 newData.maskData = data.maskData; |
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374 newData.maskPad = data.maskPad; |
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375 if (data.transparentPixel !is -1) newData.transparentPixel = 254; |
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376 |
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377 /* Convert the pixels. */ |
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378 int[] scanline = new int[rect.width]; |
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379 int redMask = palette.redMask; |
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380 int greenMask = palette.greenMask; |
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381 int blueMask = palette.blueMask; |
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382 int redShift = palette.redShift; |
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383 int greenShift = palette.greenShift; |
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384 int blueShift = palette.blueShift; |
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385 for (int y=0; y<rect.height; y++) { |
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386 int offset = y * newData.bytesPerLine; |
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387 data.getPixels(0, y, rect.width, scanline, 0); |
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388 for (int x=0; x<rect.width; x++) { |
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389 int pixel = scanline[x]; |
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390 if (pixel !is data.transparentPixel) { |
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391 int red = pixel & redMask; |
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392 red = (redShift < 0) ? red >>> -redShift : red << redShift; |
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393 int green = pixel & greenMask; |
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394 green = (greenShift < 0) ? green >>> -greenShift : green << greenShift; |
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395 int blue = pixel & blueMask; |
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396 blue = (blueShift < 0) ? blue >>> -blueShift : blue << blueShift; |
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397 int intensity = (red+red+green+green+green+green+green+blue) >> 3; |
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398 if (newData.transparentPixel is intensity) intensity = 255; |
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399 newData.data[offset] = cast(byte)intensity; |
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400 } else { |
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401 newData.data[offset] = cast(byte)254; |
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402 } |
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403 offset++; |
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404 } |
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405 } |
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406 } |
213 | 407 init_ (newData); |
408 break; | |
22
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409 } |
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410 default: |
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411 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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412 } |
213 | 413 init_(); |
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414 } |
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415 |
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416 /** |
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417 * Constructs an empty instance of this class with the |
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418 * width and height of the specified rectangle. The result |
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419 * may be drawn upon by creating a GC and using any of its |
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420 * drawing operations, as shown in the following example: |
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421 * <pre> |
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422 * Image i = new Image(device, boundsRectangle); |
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423 * GC gc = new GC(i); |
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424 * gc.drawRectangle(0, 0, 50, 50); |
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425 * gc.dispose(); |
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426 * </pre> |
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427 * <p> |
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428 * Note: Some platforms may have a limitation on the size |
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429 * of image that can be created (size depends on width, height, |
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430 * and depth). For example, Windows 95, 98, and ME do not allow |
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431 * images larger than 16M. |
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432 * </p> |
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433 * |
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434 * @param device the device on which to create the image |
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435 * @param bounds a rectangle specifying the image's width and height (must not be null) |
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436 * |
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437 * @exception IllegalArgumentException <ul> |
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438 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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439 * <li>ERROR_NULL_ARGUMENT - if the bounds rectangle is null</li> |
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440 * <li>ERROR_INVALID_ARGUMENT - if either the rectangle's width or height is negative</li> |
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441 * </ul> |
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442 * @exception DWTError <ul> |
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443 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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444 * </ul> |
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445 */ |
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446 public this(Device device, Rectangle bounds) { |
213 | 447 super(device); |
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448 if (bounds is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
213 | 449 init_(bounds.width, bounds.height); |
450 init_(); | |
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451 } |
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452 |
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453 /** |
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454 * Constructs an instance of this class from the given |
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455 * <code>ImageData</code>. |
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456 * |
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457 * @param device the device on which to create the image |
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458 * @param data the image data to create the image from (must not be null) |
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459 * |
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460 * @exception IllegalArgumentException <ul> |
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461 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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462 * <li>ERROR_NULL_ARGUMENT - if the image data is null</li> |
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463 * </ul> |
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464 * @exception DWTException <ul> |
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465 * <li>ERROR_UNSUPPORTED_DEPTH - if the depth of the ImageData is not supported</li> |
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466 * </ul> |
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467 * @exception DWTError <ul> |
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468 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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469 * </ul> |
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470 */ |
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471 public this(Device device, ImageData data) { |
213 | 472 super(device); |
473 init_(data); | |
474 init_(); | |
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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) { |
213 | 503 super(device); |
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504 if (source is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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505 if (mask is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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506 if (source.width !is mask.width || source.height !is mask.height) { |
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507 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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508 } |
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509 mask = ImageData.convertMask(mask); |
213 | 510 init_(this.device, this, source, mask); |
511 init_(); | |
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512 } |
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513 |
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514 /** |
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515 * Constructs an instance of this class by loading its representation |
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516 * from the specified input stream. Throws an error if an error |
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517 * occurs while loading the image, or if the result is an image |
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518 * of an unsupported type. Application code is still responsible |
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519 * for closing the input stream. |
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520 * <p> |
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521 * This constructor is provided for convenience when loading a single |
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522 * image only. If the stream contains multiple images, only the first |
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523 * one will be loaded. To load multiple images, use |
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524 * <code>ImageLoader.load()</code>. |
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525 * </p><p> |
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526 * This constructor may be used to load a resource as follows: |
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527 * </p> |
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528 * <pre> |
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529 * static Image loadImage (Display display, Class clazz, String string) { |
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530 * InputStream stream = clazz.getResourceAsStream (string); |
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531 * if (stream is null) return null; |
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532 * Image image = null; |
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533 * try { |
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534 * image = new Image (display, stream); |
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535 * } catch (DWTException ex) { |
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536 * } finally { |
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537 * try { |
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538 * stream.close (); |
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539 * } catch (IOException ex) {} |
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540 * } |
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541 * return image; |
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542 * } |
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543 * </pre> |
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544 * |
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545 * @param device the device on which to create the image |
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546 * @param stream the input stream to load the image from |
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547 * |
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548 * @exception IllegalArgumentException <ul> |
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549 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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550 * <li>ERROR_NULL_ARGUMENT - if the stream is null</li> |
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551 * </ul> |
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552 * @exception DWTException <ul> |
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553 * <li>ERROR_IO - if an IO error occurs while reading from the stream</li> |
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554 * <li>ERROR_INVALID_IMAGE - if the image stream contains invalid data </li> |
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555 * <li>ERROR_UNSUPPORTED_DEPTH - if the image stream describes an image with an unsupported depth</li> |
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556 * <li>ERROR_UNSUPPORTED_FORMAT - if the image stream contains an unrecognized format</li> |
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557 * </ul> |
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558 * @exception DWTError <ul> |
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559 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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560 * </ul> |
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561 */ |
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562 public this (Device device, InputStream stream) { |
213 | 563 super(device); |
564 init_(new ImageData(stream)); | |
565 init_(); | |
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566 } |
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567 |
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568 /** |
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569 * Constructs an instance of this class by loading its representation |
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570 * from the file with the specified name. Throws an error if an error |
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571 * occurs while loading the image, or if the result is an image |
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572 * of an unsupported type. |
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573 * <p> |
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574 * This constructor is provided for convenience when loading |
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575 * a single image only. If the specified file contains |
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576 * multiple images, only the first one will be used. |
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577 * |
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578 * @param device the device on which to create the image |
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579 * @param filename the name of the file to load the image from |
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580 * |
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581 * @exception IllegalArgumentException <ul> |
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582 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li> |
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583 * <li>ERROR_NULL_ARGUMENT - if the file name is null</li> |
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584 * </ul> |
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585 * @exception DWTException <ul> |
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586 * <li>ERROR_IO - if an IO error occurs while reading from the file</li> |
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587 * <li>ERROR_INVALID_IMAGE - if the image file contains invalid data </li> |
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588 * <li>ERROR_UNSUPPORTED_DEPTH - if the image file describes an image with an unsupported depth</li> |
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589 * <li>ERROR_UNSUPPORTED_FORMAT - if the image file contains an unrecognized format</li> |
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590 * </ul> |
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591 * @exception DWTError <ul> |
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592 * <li>ERROR_NO_HANDLES if a handle could not be obtained for image creation</li> |
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593 * </ul> |
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594 */ |
212
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595 public this (Device device, String filename) { |
213 | 596 super(device); |
597 device = this.device; | |
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598 if (filename is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
213 | 599 bool gdip = true; |
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600 try { |
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601 device.checkGDIP(); |
213 | 602 } catch (DWTException e) { |
603 gdip = false; | |
604 } | |
605 /* | |
606 * Bug in GDI+. For some reason, Bitmap.LockBits() segment faults | |
607 * when loading GIF files in 64-bit Windows. The fix is to not use | |
608 * GDI+ image loading in this case. | |
609 */ | |
610 if (gdip && (void*).sizeof is 8 && filename.toLowerCase().endsWith(".gif")) gdip = false; | |
611 if (gdip) { | |
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612 int length = filename.length; |
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613 char[] chars = new char[length+1]; |
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614 filename.getChars(0, length, chars, 0); |
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615 auto bitmap = Gdip.Bitmap_new( .StrToWCHARz( filename ), false); |
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616 if (bitmap !is null) { |
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617 int error = DWT.ERROR_NO_HANDLES; |
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618 int status = Gdip.Image_GetLastStatus(cast(Gdip.Image)bitmap); |
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619 if (status is 0) { |
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620 if (filename.toLowerCase().endsWith(".ico")) { |
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621 this.type = DWT.ICON; |
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622 HICON hicon; |
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623 Gdip.Bitmap_GetHICON(bitmap, hicon); |
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624 this.handle = hicon; |
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625 } else { |
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626 this.type = DWT.BITMAP; |
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627 int width = Gdip.Image_GetWidth(cast(Gdip.Image)bitmap); |
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628 int height = Gdip.Image_GetHeight(cast(Gdip.Image)bitmap); |
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629 int pixelFormat = Gdip.Image_GetPixelFormat(cast(Gdip.Image)bitmap); |
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630 switch (pixelFormat) { |
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631 case Gdip.PixelFormat16bppRGB555: |
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632 case Gdip.PixelFormat16bppRGB565: |
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633 this.handle = createDIB(width, height, 16); |
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634 break; |
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635 case Gdip.PixelFormat24bppRGB: |
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636 this.handle = createDIB(width, height, 24); |
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637 break; |
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638 case Gdip.PixelFormat32bppRGB: |
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639 // These will loose either precision or transparency |
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640 case Gdip.PixelFormat16bppGrayScale: |
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641 case Gdip.PixelFormat48bppRGB: |
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642 case Gdip.PixelFormat32bppPARGB: |
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643 case Gdip.PixelFormat64bppARGB: |
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644 case Gdip.PixelFormat64bppPARGB: |
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645 this.handle = createDIB(width, height, 32); |
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646 break; |
81 | 647 default: |
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648 } |
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649 if (this.handle !is null) { |
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650 /* |
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651 * This performs better than getting the bits with Bitmap.LockBits(), |
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652 * but it cannot be used when there is transparency. |
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653 */ |
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654 auto hDC = device.internal_new_GC(null); |
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655 auto srcHDC = OS.CreateCompatibleDC(hDC); |
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656 auto oldSrcBitmap = OS.SelectObject(srcHDC, this.handle); |
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657 auto graphics = Gdip.Graphics_new(srcHDC); |
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658 if (graphics !is null) { |
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659 Gdip.Rect rect; |
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660 rect.Width = width; |
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661 rect.Height = height; |
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662 status = Gdip.Graphics_DrawImage(graphics, cast(Gdip.Image)bitmap, rect, 0, 0, width, height, Gdip.UnitPixel, null, null, null); |
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663 if (status !is 0) { |
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664 error = DWT.ERROR_INVALID_IMAGE; |
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665 OS.DeleteObject(handle); |
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666 this.handle = null; |
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667 } |
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668 Gdip.Graphics_delete(graphics); |
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669 } |
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670 OS.SelectObject(srcHDC, oldSrcBitmap); |
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671 OS.DeleteDC(srcHDC); |
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672 device.internal_dispose_GC(hDC, null); |
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673 } else { |
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674 auto lockedBitmapData = Gdip.BitmapData_new(); |
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675 if (lockedBitmapData !is null) { |
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676 Gdip.Bitmap_LockBits(bitmap, null, 0, pixelFormat, lockedBitmapData); |
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677 //BitmapData bitmapData = new BitmapData(); |
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678 //Gdip.MoveMemory(bitmapData, lockedBitmapData); |
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679 auto stride = lockedBitmapData.Stride; |
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680 auto pixels = lockedBitmapData.Scan0; |
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681 int depth = 0, scanlinePad = 4, transparentPixel = -1; |
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682 switch (lockedBitmapData.PixelFormat) { |
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683 case Gdip.PixelFormat1bppIndexed: depth = 1; break; |
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684 case Gdip.PixelFormat4bppIndexed: depth = 4; break; |
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685 case Gdip.PixelFormat8bppIndexed: depth = 8; break; |
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686 case Gdip.PixelFormat16bppARGB1555: |
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687 case Gdip.PixelFormat16bppRGB555: |
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688 case Gdip.PixelFormat16bppRGB565: depth = 16; break; |
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689 case Gdip.PixelFormat24bppRGB: depth = 24; break; |
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690 case Gdip.PixelFormat32bppRGB: |
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691 case Gdip.PixelFormat32bppARGB: depth = 32; break; |
81 | 692 default: |
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693 } |
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694 if (depth !is 0) { |
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695 PaletteData paletteData = null; |
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696 switch (lockedBitmapData.PixelFormat) { |
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697 case Gdip.PixelFormat1bppIndexed: |
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698 case Gdip.PixelFormat4bppIndexed: |
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699 case Gdip.PixelFormat8bppIndexed: |
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700 int paletteSize = Gdip.Image_GetPaletteSize(cast(Gdip.Image)bitmap); |
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701 auto hHeap = OS.GetProcessHeap(); |
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702 auto palette = cast(Gdip.ColorPalette*) OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, paletteSize); |
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703 if (palette is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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704 Gdip.Image_GetPalette(cast(Gdip.Image)bitmap, palette, paletteSize); |
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705 Gdip.ColorPalette* colorPalette = palette; |
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706 //Gdip.MoveMemory(colorPalette, palette, ColorPalette.sizeof); |
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707 //int[] entries = new int[colorPalette.Count]; |
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708 //OS.MoveMemory(entries, palette + 8, entries.length * 4); |
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709 |
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710 //PORTING_COMMENT: moved down |
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711 //OS.HeapFree(hHeap, 0, palette); |
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712 RGB[] rgbs = new RGB[colorPalette.Count]; |
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713 paletteData = new PaletteData(rgbs); |
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714 for (int i = 0; i < colorPalette.Count; i++) { |
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715 // DWT: access palette.Entries without array bounds checking |
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716 if (((*(palette.Entries.ptr + i) >> 24) & 0xFF) is 0 && (colorPalette.Flags & Gdip.PaletteFlagsHasAlpha) !is 0) { |
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717 transparentPixel = i; |
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718 } |
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719 rgbs[i] = new RGB(((*(palette.Entries.ptr + i) & 0xFF0000) >> 16), ((*(palette.Entries.ptr + i) & 0xFF00) >> 8), ((*(palette.Entries.ptr + i) & 0xFF) >> 0)); |
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720 } |
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721 OS.HeapFree(hHeap, 0, palette); |
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722 break; |
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723 case Gdip.PixelFormat16bppARGB1555: |
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724 case Gdip.PixelFormat16bppRGB555: paletteData = new PaletteData(0x7C00, 0x3E0, 0x1F); break; |
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725 case Gdip.PixelFormat16bppRGB565: paletteData = new PaletteData(0xF800, 0x7E0, 0x1F); break; |
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726 case Gdip.PixelFormat24bppRGB: paletteData = new PaletteData(0xFF, 0xFF00, 0xFF0000); break; |
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727 case Gdip.PixelFormat32bppRGB: |
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728 case Gdip.PixelFormat32bppARGB: paletteData = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); break; |
81 | 729 default: |
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730 } |
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731 byte[] data = new byte[ stride * height ], alphaData = null; |
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732 OS.MoveMemory(data.ptr, pixels, data.length); |
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733 switch (lockedBitmapData.PixelFormat) { |
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734 case Gdip.PixelFormat16bppARGB1555: |
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735 alphaData = new byte[width * height]; |
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736 for (int i = 1, j = 0; i < data.length; i += 2, j++) { |
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737 alphaData[j] = cast(byte)((data[i] & 0x80) !is 0 ? 255 : 0); |
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738 } |
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739 break; |
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740 case Gdip.PixelFormat32bppARGB: |
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741 alphaData = new byte[width * height]; |
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742 for (int i = 3, j = 0; i < data.length; i += 4, j++) { |
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743 alphaData[j] = data[i]; |
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744 } |
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745 break; |
81 | 746 default: |
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747 } |
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748 Gdip.Bitmap_UnlockBits(bitmap, lockedBitmapData); |
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749 Gdip.BitmapData_delete(lockedBitmapData); |
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750 ImageData img = new ImageData(width, height, depth, paletteData, scanlinePad, data); |
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751 img.transparentPixel = transparentPixel; |
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752 img.alphaData = alphaData; |
213 | 753 init_(img); |
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754 } |
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755 } |
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756 } |
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757 } |
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758 } |
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759 Gdip.Bitmap_delete(bitmap); |
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760 if (status is 0) { |
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761 if (this.handle is null) DWT.error(error); |
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762 return; |
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763 } |
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764 } |
213 | 765 } |
766 init_(new ImageData(filename)); | |
767 init_(); | |
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768 } |
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769 |
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770 /** |
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771 * Create a DIB from a DDB without using GetDIBits. Note that |
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772 * the DDB should not be selected into a HDC. |
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773 */ |
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774 HBITMAP createDIBFromDDB(HDC hDC, HBITMAP hBitmap, int width, int height) { |
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775 |
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776 /* Determine the DDB depth */ |
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777 int bits = OS.GetDeviceCaps (hDC, OS.BITSPIXEL); |
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778 int planes = OS.GetDeviceCaps (hDC, OS.PLANES); |
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779 int depth = bits * planes; |
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780 |
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781 /* Determine the DIB palette */ |
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782 bool isDirect = depth > 8; |
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783 RGB[] rgbs = null; |
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784 if (!isDirect) { |
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785 int numColors = 1 << depth; |
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786 byte[] logPalette = new byte[4 * numColors]; |
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787 OS.GetPaletteEntries(device.hPalette, 0, numColors, cast(PALETTEENTRY*)logPalette.ptr); |
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788 rgbs = new RGB[numColors]; |
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789 for (int i = 0; i < numColors; i++) { |
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790 rgbs[i] = new RGB(logPalette[i] & 0xFF, logPalette[i + 1] & 0xFF, logPalette[i + 2] & 0xFF); |
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791 } |
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792 } |
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793 |
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794 bool useBitfields = OS.IsWinCE && (depth is 16 || depth is 32); |
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795 BITMAPINFOHEADER bmiHeader; |
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796 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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797 bmiHeader.biWidth = width; |
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798 bmiHeader.biHeight = -height; |
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799 bmiHeader.biPlanes = 1; |
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800 bmiHeader.biBitCount = cast(short)depth; |
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801 if (useBitfields) bmiHeader.biCompression = OS.BI_BITFIELDS; |
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802 else bmiHeader.biCompression = OS.BI_RGB; |
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803 byte[] bmi; |
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804 if (isDirect) bmi = new byte[BITMAPINFOHEADER.sizeof + (useBitfields ? 12 : 0)]; |
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805 else bmi = new byte[BITMAPINFOHEADER.sizeof + rgbs.length * 4]; |
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806 OS.MoveMemory(bmi.ptr, &bmiHeader, BITMAPINFOHEADER.sizeof); |
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807 |
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808 /* Set the rgb colors into the bitmap info */ |
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809 int offset = BITMAPINFOHEADER.sizeof; |
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810 if (isDirect) { |
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811 if (useBitfields) { |
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812 int redMask = 0; |
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813 int greenMask = 0; |
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814 int blueMask = 0; |
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815 switch (depth) { |
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changeset
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816 case 16: |
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817 redMask = 0x7C00; |
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818 greenMask = 0x3E0; |
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819 blueMask = 0x1F; |
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820 /* little endian */ |
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821 bmi[offset] = cast(byte)((redMask & 0xFF) >> 0); |
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822 bmi[offset + 1] = cast(byte)((redMask & 0xFF00) >> 8); |
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823 bmi[offset + 2] = cast(byte)((redMask & 0xFF0000) >> 16); |
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824 bmi[offset + 3] = cast(byte)((redMask & 0xFF000000) >> 24); |
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825 bmi[offset + 4] = cast(byte)((greenMask & 0xFF) >> 0); |
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826 bmi[offset + 5] = cast(byte)((greenMask & 0xFF00) >> 8); |
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827 bmi[offset + 6] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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828 bmi[offset + 7] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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829 bmi[offset + 8] = cast(byte)((blueMask & 0xFF) >> 0); |
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830 bmi[offset + 9] = cast(byte)((blueMask & 0xFF00) >> 8); |
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831 bmi[offset + 10] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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832 bmi[offset + 11] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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833 break; |
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834 case 32: |
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835 redMask = 0xFF00; |
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836 greenMask = 0xFF0000; |
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837 blueMask = 0xFF000000; |
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838 /* big endian */ |
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839 bmi[offset] = cast(byte)((redMask & 0xFF000000) >> 24); |
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840 bmi[offset + 1] = cast(byte)((redMask & 0xFF0000) >> 16); |
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841 bmi[offset + 2] = cast(byte)((redMask & 0xFF00) >> 8); |
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842 bmi[offset + 3] = cast(byte)((redMask & 0xFF) >> 0); |
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843 bmi[offset + 4] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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844 bmi[offset + 5] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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845 bmi[offset + 6] = cast(byte)((greenMask & 0xFF00) >> 8); |
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846 bmi[offset + 7] = cast(byte)((greenMask & 0xFF) >> 0); |
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847 bmi[offset + 8] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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848 bmi[offset + 9] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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849 bmi[offset + 10] = cast(byte)((blueMask & 0xFF00) >> 8); |
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850 bmi[offset + 11] = cast(byte)((blueMask & 0xFF) >> 0); |
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851 break; |
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852 default: |
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853 DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH); |
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854 } |
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855 } |
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856 } else { |
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857 for (int j = 0; j < rgbs.length; j++) { |
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858 bmi[offset] = cast(byte)rgbs[j].blue; |
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859 bmi[offset + 1] = cast(byte)rgbs[j].green; |
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860 bmi[offset + 2] = cast(byte)rgbs[j].red; |
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861 bmi[offset + 3] = 0; |
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862 offset += 4; |
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863 } |
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864 } |
213 | 865 void* pBits; |
22
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866 HBITMAP hDib = OS.CreateDIBSection(null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS, &pBits, null, 0); |
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867 if (hDib is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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868 |
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869 /* Bitblt DDB into DIB */ |
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870 auto hdcSource = OS.CreateCompatibleDC(hDC); |
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871 auto hdcDest = OS.CreateCompatibleDC(hDC); |
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872 auto hOldSrc = OS.SelectObject(hdcSource, hBitmap); |
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873 auto hOldDest = OS.SelectObject(hdcDest, hDib); |
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874 OS.BitBlt(hdcDest, 0, 0, width, height, hdcSource, 0, 0, OS.SRCCOPY); |
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875 OS.SelectObject(hdcSource, hOldSrc); |
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876 OS.SelectObject(hdcDest, hOldDest); |
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877 OS.DeleteDC(hdcSource); |
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878 OS.DeleteDC(hdcDest); |
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879 |
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880 return hDib; |
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881 } |
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882 |
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883 // FIXME: Potential crash site in D: createGdipImage casts pointers to int before |
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884 // returning them in an int[]. Since the D GC does not and cannot scan int's for |
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885 // pointers, there is potential that the pointer's object could be collected while still |
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886 // active, even though it might be unlikely given the short span of time that the |
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887 // function has them stored in the int array. |
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888 |
213 | 889 int /*long*/ [] createGdipImage() { |
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890 switch (type) { |
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891 case DWT.BITMAP: { |
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892 if (alpha !is -1 || alphaData !is null || transparentPixel !is -1) { |
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893 BITMAP bm; |
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894 OS.GetObject(handle, BITMAP.sizeof, &bm); |
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895 int imgWidth = bm.bmWidth; |
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896 int imgHeight = bm.bmHeight; |
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897 auto hDC = device.internal_new_GC(null); |
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898 auto srcHdc = OS.CreateCompatibleDC(hDC); |
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899 auto oldSrcBitmap = OS.SelectObject(srcHdc, handle); |
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900 auto memHdc = OS.CreateCompatibleDC(hDC); |
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901 auto memDib = createDIB(imgWidth, imgHeight, 32); |
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902 if (memDib is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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903 auto oldMemBitmap = OS.SelectObject(memHdc, memDib); |
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904 BITMAP dibBM; |
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905 OS.GetObject(memDib, BITMAP.sizeof, &dibBM); |
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906 int sizeInBytes = dibBM.bmWidthBytes * dibBM.bmHeight; |
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907 OS.BitBlt(memHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, 0, OS.SRCCOPY); |
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908 ubyte red = 0, green = 0, blue = 0; |
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909 if (transparentPixel !is -1) { |
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910 if (bm.bmBitsPixel <= 8) { |
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911 ubyte[] color = new ubyte[4]; |
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912 OS.GetDIBColorTable(srcHdc, transparentPixel, 1, cast(RGBQUAD*)color.ptr); |
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913 blue = color[0]; |
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914 green = color[1]; |
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915 red = color[2]; |
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916 } else { |
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917 switch (bm.bmBitsPixel) { |
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918 case 16: |
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919 int blueMask = 0x1F; |
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920 int blueShift = ImageData.getChannelShift(blueMask); |
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921 byte[] blues = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(blueMask, blueShift)]; |
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922 blue = blues[(transparentPixel & blueMask) >> blueShift]; |
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923 int greenMask = 0x3E0; |
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924 int greenShift = ImageData.getChannelShift(greenMask); |
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925 byte[] greens = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(greenMask, greenShift)]; |
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926 green = greens[(transparentPixel & greenMask) >> greenShift]; |
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927 int redMask = 0x7C00; |
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928 int redShift = ImageData.getChannelShift(redMask); |
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929 byte[] reds = ImageData.ANY_TO_EIGHT[ImageData.getChannelWidth(redMask, redShift)]; |
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930 red = reds[(transparentPixel & redMask) >> redShift]; |
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931 break; |
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932 case 24: |
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933 blue = cast(ubyte)((transparentPixel & 0xFF0000) >> 16); |
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934 green = cast(ubyte)((transparentPixel & 0xFF00) >> 8); |
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935 red = cast(ubyte)(transparentPixel & 0xFF); |
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936 break; |
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937 case 32: |
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938 blue = cast(ubyte)((transparentPixel & 0xFF000000) >>> 24); |
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939 green = cast(ubyte)((transparentPixel & 0xFF0000) >> 16); |
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940 red = cast(ubyte)((transparentPixel & 0xFF00) >> 8); |
22
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941 break; |
81 | 942 default: |
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943 } |
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944 } |
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945 } |
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946 OS.SelectObject(srcHdc, oldSrcBitmap); |
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947 OS.SelectObject(memHdc, oldMemBitmap); |
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948 OS.DeleteObject(srcHdc); |
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949 OS.DeleteObject(memHdc); |
95
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950 ubyte[] srcData = new ubyte[sizeInBytes]; |
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951 OS.MoveMemory(srcData.ptr, dibBM.bmBits, sizeInBytes); |
22
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952 OS.DeleteObject(memDib); |
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953 device.internal_dispose_GC(hDC, null); |
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954 if (alpha !is -1) { |
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955 for (int y = 0, dp = 0; y < imgHeight; ++y) { |
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956 for (int x = 0; x < imgWidth; ++x) { |
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957 srcData[dp + 3] = cast(ubyte)alpha; |
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958 dp += 4; |
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959 } |
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960 } |
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961 } else if (alphaData !is null) { |
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962 for (int y = 0, dp = 0, ap = 0; y < imgHeight; ++y) { |
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963 for (int x = 0; x < imgWidth; ++x) { |
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964 srcData[dp + 3] = alphaData[ap++]; |
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965 dp += 4; |
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966 } |
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967 } |
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968 } else if (transparentPixel !is -1) { |
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969 for (int y = 0, dp = 0; y < imgHeight; ++y) { |
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970 for (int x = 0; x < imgWidth; ++x) { |
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971 if (srcData[dp] is blue && srcData[dp + 1] is green && srcData[dp + 2] is red) { |
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972 srcData[dp + 3] = cast(ubyte)0; |
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973 } else { |
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974 srcData[dp + 3] = cast(ubyte)0xFF; |
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975 } |
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976 dp += 4; |
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977 } |
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978 } |
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979 } |
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980 auto hHeap = OS.GetProcessHeap(); |
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981 auto pixels = cast(ubyte*)OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, srcData.length); |
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982 if (pixels is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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983 OS.MoveMemory(pixels, srcData.ptr, sizeInBytes); |
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984 return [ cast(int)(Gdip.Bitmap_new(imgWidth, imgHeight, dibBM.bmWidthBytes, Gdip.PixelFormat32bppARGB, pixels)), cast(int) pixels]; |
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985 } |
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986 return [cast(int)Gdip.Bitmap_new(handle, null), 0]; |
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987 } |
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988 case DWT.ICON: { |
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989 /* |
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990 * Bug in GDI+. Creating a new GDI+ Bitmap from a HICON segment faults |
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991 * when the icon width is bigger than the icon height. The fix is to |
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992 * detect this and create a PixelFormat32bppARGB image instead. |
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993 */ |
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994 ICONINFO iconInfo; |
117 | 995 static if (OS.IsWinCE) { |
22
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996 GetIconInfo(this, &iconInfo); |
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997 } else { |
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998 OS.GetIconInfo(handle, &iconInfo); |
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999 } |
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1000 auto hBitmap = iconInfo.hbmColor; |
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1001 if (hBitmap is null) hBitmap = iconInfo.hbmMask; |
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1002 BITMAP bm; |
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1003 OS.GetObject(hBitmap, BITMAP.sizeof, &bm); |
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1004 int imgWidth = bm.bmWidth; |
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1005 int imgHeight = hBitmap is iconInfo.hbmMask ? bm.bmHeight / 2 : bm.bmHeight; |
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1006 Gdip.Bitmap img; |
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1007 ubyte* pixels; |
213 | 1008 /* |
1009 * Bug in GDI+. Bitmap_new() segments fault if the image width | |
1010 * is greater than the image height. | |
1011 * | |
1012 * Note that it also fails to generated an appropriate alpha | |
1013 * channel when the icon depth is 32. | |
1014 */ | |
1015 if (imgWidth > imgHeight || bm.bmBitsPixel is 32) { | |
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1016 auto hDC = device.internal_new_GC(null); |
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1017 auto srcHdc = OS.CreateCompatibleDC(hDC); |
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1018 auto oldSrcBitmap = OS.SelectObject(srcHdc, hBitmap); |
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1019 auto memHdc = OS.CreateCompatibleDC(hDC); |
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1020 auto memDib = createDIB(imgWidth, imgHeight, 32); |
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1021 if (memDib is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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1022 auto oldMemBitmap = OS.SelectObject(memHdc, memDib); |
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1023 BITMAP dibBM; |
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1024 OS.GetObject(memDib, BITMAP.sizeof, &dibBM); |
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1025 OS.BitBlt(memHdc, 0, 0, imgWidth, imgHeight, srcHdc, 0, hBitmap is iconInfo.hbmMask ? imgHeight : 0, OS.SRCCOPY); |
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1026 OS.SelectObject(memHdc, oldMemBitmap); |
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1027 OS.DeleteObject(memHdc); |
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1028 ubyte[] srcData = new ubyte[dibBM.bmWidthBytes * dibBM.bmHeight]; |
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1029 OS.MoveMemory(srcData.ptr, dibBM.bmBits, srcData.length); |
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1030 OS.DeleteObject(memDib); |
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1031 OS.SelectObject(srcHdc, iconInfo.hbmMask); |
213 | 1032 for (int y = 0, dp = 3; y < imgHeight; ++y) { |
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1033 for (int x = 0; x < imgWidth; ++x) { |
213 | 1034 if (srcData[dp] is 0) { |
1035 if (OS.GetPixel(srcHdc, x, y) !is 0) { | |
1036 srcData[dp] = cast(ubyte)0; | |
1037 } else { | |
1038 srcData[dp] = cast(ubyte)0xFF; | |
1039 } | |
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1040 } |
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1041 dp += 4; |
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1042 } |
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1043 } |
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1044 OS.SelectObject(srcHdc, oldSrcBitmap); |
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1045 OS.DeleteObject(srcHdc); |
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1046 device.internal_dispose_GC(hDC, null); |
23 | 1047 auto hHeap = OS.GetProcessHeap(); |
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1048 pixels = cast(ubyte*) OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, srcData.length); |
23 | 1049 if (pixels is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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1050 OS.MoveMemory(pixels, srcData.ptr, srcData.length); |
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1051 img = Gdip.Bitmap_new(imgWidth, imgHeight, dibBM.bmWidthBytes, Gdip.PixelFormat32bppARGB, pixels); |
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1052 } else { |
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1053 img = Gdip.Bitmap_new(handle); |
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1054 } |
23 | 1055 if (iconInfo.hbmColor !is null) OS.DeleteObject(iconInfo.hbmColor); |
1056 if (iconInfo.hbmMask !is null) OS.DeleteObject(iconInfo.hbmMask); | |
1057 return [ cast(int)img, cast(int) pixels ]; | |
22
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1058 } |
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1059 default: DWT.error(DWT.ERROR_INVALID_IMAGE); |
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1060 } |
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1061 return null; |
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1062 } |
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1063 |
213 | 1064 void destroy () { |
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1065 if (memGC !is null) memGC.dispose(); |
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1066 if (type is DWT.ICON) { |
117 | 1067 static if (OS.IsWinCE) data = null; |
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1068 OS.DestroyIcon (handle); |
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1069 } else { |
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1070 OS.DeleteObject (handle); |
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1071 } |
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1072 handle = null; |
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1073 memGC = null; |
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1074 } |
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1075 |
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1076 /** |
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1077 * Compares the argument to the receiver, and returns true |
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1078 * if they represent the <em>same</em> object using a class |
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1079 * specific comparison. |
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1080 * |
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1081 * @param object the object to compare with this object |
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1082 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise |
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1083 * |
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1084 * @see #hashCode |
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1085 */ |
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1086 override public int opEquals (Object object) { |
22
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1087 if (object is this) return true; |
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1088 if (!(cast(Image)object)) return false; |
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1089 Image image = cast(Image) object; |
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1090 return device is image.device && handle is image.handle; |
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1091 } |
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1092 |
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1093 /** |
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1094 * Returns the color to which to map the transparent pixel, or null if |
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1095 * the receiver has no transparent pixel. |
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1096 * <p> |
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1097 * There are certain uses of Images that do not support transparency |
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1098 * (for example, setting an image into a button or label). In these cases, |
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1099 * it may be desired to simulate transparency by using the background |
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1100 * color of the widget to paint the transparent pixels of the image. |
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1101 * Use this method to check which color will be used in these cases |
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1102 * in place of transparency. This value may be set with setBackground(). |
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1103 * <p> |
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1104 * |
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1105 * @return the background color of the image, or null if there is no transparency in the image |
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1106 * |
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1107 * @exception DWTException <ul> |
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1108 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
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1109 * </ul> |
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1110 */ |
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1111 public Color getBackground() { |
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1112 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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1113 if (transparentPixel is -1) return null; |
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1114 |
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1115 /* Get the HDC for the device */ |
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1116 auto hDC = device.internal_new_GC(null); |
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1117 |
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1118 /* Compute the background color */ |
23 | 1119 BITMAP bm; |
1120 OS.GetObject(handle, BITMAP.sizeof, &bm); | |
22
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1121 auto hdcMem = OS.CreateCompatibleDC(hDC); |
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1122 auto hOldObject = OS.SelectObject(hdcMem, handle); |
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1123 int red = 0, green = 0, blue = 0; |
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1124 if (bm.bmBitsPixel <= 8) { |
117 | 1125 static if (OS.IsWinCE) { |
95
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1126 byte[1] pBits; |
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1127 OS.MoveMemory(pBits.ptr, bm.bmBits, 1); |
22
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1128 byte oldValue = pBits[0]; |
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1129 int mask = (0xFF << (8 - bm.bmBitsPixel)) & 0x00FF; |
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1130 pBits[0] = cast(byte)((transparentPixel << (8 - bm.bmBitsPixel)) | (pBits[0] & ~mask)); |
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1131 OS.MoveMemory(bm.bmBits, pBits.ptr, 1); |
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1132 int color = OS.GetPixel(hdcMem, 0, 0); |
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1133 pBits[0] = oldValue; |
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1134 OS.MoveMemory(bm.bmBits, pBits.ptr, 1); |
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1135 blue = (color & 0xFF0000) >> 16; |
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1136 green = (color & 0xFF00) >> 8; |
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1137 red = color & 0xFF; |
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1138 } else { |
23 | 1139 RGBQUAD color; |
1140 OS.GetDIBColorTable(hdcMem, transparentPixel, 1, &color); | |
1141 blue = color.rgbBlue; | |
1142 green = color.rgbGreen; | |
1143 red = color.rgbRed; | |
22
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1144 } |
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1145 } else { |
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1146 switch (bm.bmBitsPixel) { |
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1147 case 16: |
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1148 blue = (transparentPixel & 0x1F) << 3; |
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1149 green = (transparentPixel & 0x3E0) >> 2; |
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1150 red = (transparentPixel & 0x7C00) >> 7; |
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1151 break; |
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1152 case 24: |
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1153 blue = (transparentPixel & 0xFF0000) >> 16; |
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1154 green = (transparentPixel & 0xFF00) >> 8; |
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1155 red = transparentPixel & 0xFF; |
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1156 break; |
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1157 case 32: |
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1158 blue = (transparentPixel & 0xFF000000) >>> 24; |
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1159 green = (transparentPixel & 0xFF0000) >> 16; |
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1160 red = (transparentPixel & 0xFF00) >> 8; |
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1161 break; |
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1162 default: |
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1163 return null; |
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1164 } |
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1165 } |
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1166 OS.SelectObject(hdcMem, hOldObject); |
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1167 OS.DeleteDC(hdcMem); |
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1168 |
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1169 /* Release the HDC for the device */ |
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1170 device.internal_dispose_GC(hDC, null); |
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1171 return Color.win32_new(device, (blue << 16) | (green << 8) | red); |
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1172 } |
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1173 |
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1174 /** |
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1175 * Returns the bounds of the receiver. The rectangle will always |
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1176 * have x and y values of 0, and the width and height of the |
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1177 * image. |
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1178 * |
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1179 * @return a rectangle specifying the image's bounds |
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1180 * |
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1181 * @exception DWTException <ul> |
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1182 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
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1183 * <li>ERROR_INVALID_IMAGE - if the image is not a bitmap or an icon</li> |
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1184 * </ul> |
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1185 */ |
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1186 public Rectangle getBounds() { |
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1187 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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1188 if (width !is -1 && height !is -1) { |
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1189 return new Rectangle(0, 0, width, height); |
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1190 } |
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1191 switch (type) { |
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1192 case DWT.BITMAP: |
23 | 1193 BITMAP bm; |
1194 OS.GetObject(handle, BITMAP.sizeof, &bm); | |
22
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1195 return new Rectangle(0, 0, width = bm.bmWidth, height = bm.bmHeight); |
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1196 case DWT.ICON: |
117 | 1197 static if (OS.IsWinCE) { |
22
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1198 return new Rectangle(0, 0, width = data.width, height = data.height); |
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1199 } else { |
23 | 1200 ICONINFO info; |
1201 OS.GetIconInfo(handle, &info); | |
1202 auto hBitmap = info.hbmColor; | |
1203 if (hBitmap is null) hBitmap = info.hbmMask; | |
1204 BITMAP bm; | |
1205 OS.GetObject(hBitmap, BITMAP.sizeof, &bm); | |
22
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1206 if (hBitmap is info.hbmMask) bm.bmHeight /= 2; |
23 | 1207 if (info.hbmColor !is null) OS.DeleteObject(info.hbmColor); |
1208 if (info.hbmMask !is null) OS.DeleteObject(info.hbmMask); | |
22
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1209 return new Rectangle(0, 0, width = bm.bmWidth, height = bm.bmHeight); |
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1210 } |
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1211 default: |
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1212 DWT.error(DWT.ERROR_INVALID_IMAGE); |
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1213 return null; |
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1214 } |
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1215 } |
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1216 |
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1217 /** |
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1218 * Returns an <code>ImageData</code> based on the receiver |
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1219 * Modifications made to this <code>ImageData</code> will not |
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1220 * affect the Image. |
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1221 * |
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1222 * @return an <code>ImageData</code> containing the image's data and attributes |
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1223 * |
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1224 * @exception DWTException <ul> |
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1225 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
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1226 * <li>ERROR_INVALID_IMAGE - if the image is not a bitmap or an icon</li> |
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1227 * </ul> |
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1228 * |
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1229 * @see ImageData |
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1230 */ |
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1231 public ImageData getImageData() { |
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1232 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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1233 BITMAP bm; |
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1234 int depth, width, height; |
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1235 switch (type) { |
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1236 case DWT.ICON: { |
117 | 1237 static if (OS.IsWinCE) return data; |
23 | 1238 ICONINFO info; |
117 | 1239 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1240 OS.GetIconInfo(handle, &info); |
22
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1241 /* Get the basic BITMAP information */ |
23 | 1242 auto hBitmap = info.hbmColor; |
1243 if (hBitmap is null) hBitmap = info.hbmMask; | |
1244 OS.GetObject(hBitmap, BITMAP.sizeof, &bm); | |
22
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1245 depth = bm.bmPlanes * bm.bmBitsPixel; |
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1246 width = bm.bmWidth; |
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1247 if (hBitmap is info.hbmMask) bm.bmHeight /= 2; |
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1248 height = bm.bmHeight; |
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1249 int numColors = 0; |
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1250 if (depth <= 8) numColors = 1 << depth; |
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1251 /* Create the BITMAPINFO */ |
23 | 1252 BITMAPINFOHEADER bmiHeader; |
22
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1253 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1254 bmiHeader.biWidth = width; |
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1255 bmiHeader.biHeight = -height; |
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1256 bmiHeader.biPlanes = 1; |
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1257 bmiHeader.biBitCount = cast(short)depth; |
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1258 bmiHeader.biCompression = OS.BI_RGB; |
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1259 byte[] bmi = new byte[BITMAPINFOHEADER.sizeof + numColors * 4]; |
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1260 OS.MoveMemory(bmi.ptr, &bmiHeader, BITMAPINFOHEADER.sizeof); |
22
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1261 |
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1262 /* Get the HDC for the device */ |
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1263 auto hDC = device.internal_new_GC(null); |
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1264 |
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1265 /* Create the DC and select the bitmap */ |
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1266 auto hBitmapDC = OS.CreateCompatibleDC(hDC); |
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1267 auto hOldBitmap = OS.SelectObject(hBitmapDC, hBitmap); |
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1268 /* Select the palette if necessary */ |
23 | 1269 HPALETTE oldPalette; |
22
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1270 if (depth <= 8) { |
23 | 1271 auto hPalette = device.hPalette; |
1272 if (hPalette !is null) { | |
22
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1273 oldPalette = OS.SelectPalette(hBitmapDC, hPalette, false); |
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1274 OS.RealizePalette(hBitmapDC); |
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1275 } |
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1276 } |
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1277 /* Find the size of the image and allocate data */ |
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1278 int imageSize; |
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1279 /* Call with null lpBits to get the image size */ |
117 | 1280 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1281 OS.GetDIBits(hBitmapDC, hBitmap, 0, height, null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
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1282 OS.MoveMemory(&bmiHeader, bmi.ptr, BITMAPINFOHEADER.sizeof); |
22
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1283 imageSize = bmiHeader.biSizeImage; |
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1284 byte[] data = new byte[imageSize]; |
22
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1285 /* Get the bitmap data */ |
23 | 1286 auto hHeap = OS.GetProcessHeap(); |
1287 auto lpvBits = cast(byte*) OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, imageSize); | |
1288 if (lpvBits is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
117 | 1289 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1290 OS.GetDIBits(hBitmapDC, hBitmap, 0, height, lpvBits, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
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1291 OS.MoveMemory(data.ptr, lpvBits, imageSize); |
22
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1292 /* Calculate the palette */ |
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1293 PaletteData palette = null; |
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1294 if (depth <= 8) { |
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1295 RGB[] rgbs = new RGB[numColors]; |
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1296 int srcIndex = 40; |
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1297 for (int i = 0; i < numColors; i++) { |
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1298 rgbs[i] = new RGB(bmi[srcIndex + 2] & 0xFF, bmi[srcIndex + 1] & 0xFF, bmi[srcIndex] & 0xFF); |
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1299 srcIndex += 4; |
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1300 } |
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1301 palette = new PaletteData(rgbs); |
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1302 } else if (depth is 16) { |
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1303 palette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
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1304 } else if (depth is 24) { |
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1305 palette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
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1306 } else if (depth is 32) { |
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1307 palette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
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1308 } else { |
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1309 DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH); |
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1310 } |
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1311 |
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1312 /* Do the mask */ |
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1313 byte [] maskData = null; |
23 | 1314 if (info.hbmColor is null) { |
22
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1315 /* Do the bottom half of the mask */ |
117 | 1316 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1317 OS.GetDIBits(hBitmapDC, hBitmap, height, height, lpvBits, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
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1318 OS.MoveMemory(maskData.ptr, lpvBits, imageSize); |
22
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1319 } else { |
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1320 /* Do the entire mask */ |
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1321 /* Create the BITMAPINFO */ |
23 | 1322 bmiHeader = BITMAPINFOHEADER.init; |
22
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1323 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1324 bmiHeader.biWidth = width; |
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1325 bmiHeader.biHeight = -height; |
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1326 bmiHeader.biPlanes = 1; |
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1327 bmiHeader.biBitCount = 1; |
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1328 bmiHeader.biCompression = OS.BI_RGB; |
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1329 bmi = new byte[BITMAPINFOHEADER.sizeof + 8]; |
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1330 OS.MoveMemory(bmi.ptr, &bmiHeader, BITMAPINFOHEADER.sizeof); |
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1331 |
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1332 /* First color black, second color white */ |
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1333 int offset = BITMAPINFOHEADER.sizeof; |
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1334 bmi[offset + 4] = bmi[offset + 5] = bmi[offset + 6] = cast(byte)0xFF; |
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1335 bmi[offset + 7] = 0; |
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1336 OS.SelectObject(hBitmapDC, info.hbmMask); |
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1337 /* Call with null lpBits to get the image size */ |
117 | 1338 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1339 OS.GetDIBits(hBitmapDC, info.hbmMask, 0, height, null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
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1340 OS.MoveMemory(&bmiHeader, bmi.ptr, BITMAPINFOHEADER.sizeof); |
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1341 imageSize = bmiHeader.biSizeImage; |
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1342 maskData = new byte[imageSize]; |
23 | 1343 auto lpvMaskBits = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, imageSize); |
1344 if (lpvMaskBits is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
117 | 1345 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1346 OS.GetDIBits(hBitmapDC, info.hbmMask, 0, height, lpvMaskBits, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
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1347 OS.MoveMemory(maskData.ptr, lpvMaskBits, imageSize); |
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1348 OS.HeapFree(hHeap, 0, lpvMaskBits); |
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1349 /* Loop to invert the mask */ |
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1350 for (int i = 0; i < maskData.length; i++) { |
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1351 maskData[i] ^= -1; |
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1352 } |
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1353 /* Make sure mask scanlinePad is 2 */ |
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1354 int maskPad; |
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1355 int bpl = imageSize / height; |
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1356 for (maskPad = 1; maskPad < 128; maskPad++) { |
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1357 int calcBpl = (((width + 7) / 8) + (maskPad - 1)) / maskPad * maskPad; |
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1358 if (calcBpl is bpl) break; |
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1359 } |
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1360 maskData = ImageData.convertPad(maskData, width, height, 1, maskPad, 2); |
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1361 } |
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1362 /* Clean up */ |
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1363 OS.HeapFree(hHeap, 0, lpvBits); |
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1364 OS.SelectObject(hBitmapDC, hOldBitmap); |
23 | 1365 if (oldPalette !is null) { |
22
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1366 OS.SelectPalette(hBitmapDC, oldPalette, false); |
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1367 OS.RealizePalette(hBitmapDC); |
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1368 } |
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1369 OS.DeleteDC(hBitmapDC); |
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1370 |
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1371 /* Release the HDC for the device */ |
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1372 device.internal_dispose_GC(hDC, null); |
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1373 |
23 | 1374 if (info.hbmColor !is null) OS.DeleteObject(info.hbmColor); |
1375 if (info.hbmMask !is null) OS.DeleteObject(info.hbmMask); | |
22
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1376 /* Construct and return the ImageData */ |
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1377 ImageData imageData = new ImageData(width, height, depth, palette, 4, data); |
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1378 imageData.maskData = maskData; |
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1379 imageData.maskPad = 2; |
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1380 return imageData; |
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1381 } |
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1382 case DWT.BITMAP: { |
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1383 /* Get the basic BITMAP information */ |
23 | 1384 bm = BITMAP.init; |
1385 OS.GetObject(handle, BITMAP.sizeof, &bm); | |
22
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1386 depth = bm.bmPlanes * bm.bmBitsPixel; |
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1387 width = bm.bmWidth; |
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1388 height = bm.bmHeight; |
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1389 /* Find out whether this is a DIB or a DDB. */ |
23 | 1390 bool isDib = (bm.bmBits !is null); |
22
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1391 /* Get the HDC for the device */ |
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1392 auto hDC = device.internal_new_GC(null); |
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1393 |
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1394 /* |
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1395 * Feature in WinCE. GetDIBits is not available in WinCE. The |
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1396 * workaround is to create a temporary DIB from the DDB and use |
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1397 * the bmBits field of DIBSECTION to retrieve the image data. |
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1398 */ |
23 | 1399 auto handle = this.handle; |
117 | 1400 static if (OS.IsWinCE) { |
22
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1401 if (!isDib) { |
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1402 bool mustRestore = false; |
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1403 if (memGC !is null && !memGC.isDisposed()) { |
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1404 memGC.flush (); |
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1405 mustRestore = true; |
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1406 GCData data = memGC.data; |
23 | 1407 if (data.hNullBitmap !is null) { |
22
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1408 OS.SelectObject(memGC.handle, data.hNullBitmap); |
23 | 1409 data.hNullBitmap = null; |
22
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1410 } |
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1411 } |
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1412 handle = createDIBFromDDB(hDC, this.handle, width, height); |
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1413 if (mustRestore) { |
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1414 auto hOldBitmap = OS.SelectObject(memGC.handle, this.handle); |
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1415 memGC.data.hNullBitmap = hOldBitmap; |
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1416 } |
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1417 isDib = true; |
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1418 } |
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1419 } |
23 | 1420 DIBSECTION dib; |
22
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1421 if (isDib) { |
23 | 1422 OS.GetObject(handle, DIBSECTION.sizeof, &dib); |
22
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1423 } |
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1424 /* Calculate number of colors */ |
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1425 int numColors = 0; |
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1426 if (depth <= 8) { |
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1427 if (isDib) { |
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1428 numColors = dib.dsBmih.biClrUsed; |
22
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1429 } else { |
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1430 numColors = 1 << depth; |
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1431 } |
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1432 } |
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1433 /* Create the BITMAPINFO */ |
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1434 byte[] bmi = null; |
23 | 1435 BITMAPINFOHEADER bmiHeader; |
22
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1436 if (!isDib) { |
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1437 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1438 bmiHeader.biWidth = width; |
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1439 bmiHeader.biHeight = -height; |
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1440 bmiHeader.biPlanes = 1; |
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1441 bmiHeader.biBitCount = cast(short)depth; |
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1442 bmiHeader.biCompression = OS.BI_RGB; |
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1443 bmi = new byte[BITMAPINFOHEADER.sizeof + numColors * 4]; |
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1444 OS.MoveMemory(bmi.ptr, &bmiHeader, BITMAPINFOHEADER.sizeof); |
22
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1445 } |
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1446 |
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1447 /* Create the DC and select the bitmap */ |
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1448 auto hBitmapDC = OS.CreateCompatibleDC(hDC); |
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1449 auto hOldBitmap = OS.SelectObject(hBitmapDC, handle); |
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1450 /* Select the palette if necessary */ |
23 | 1451 HPALETTE oldPalette; |
22
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1452 if (!isDib && depth <= 8) { |
23 | 1453 auto hPalette = device.hPalette; |
1454 if (hPalette !is null) { | |
22
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1455 oldPalette = OS.SelectPalette(hBitmapDC, hPalette, false); |
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1456 OS.RealizePalette(hBitmapDC); |
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1457 } |
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1458 } |
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1459 /* Find the size of the image and allocate data */ |
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1460 int imageSize; |
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1461 if (isDib) { |
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1462 imageSize = dib.dsBmih.biSizeImage; |
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1463 } else { |
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1464 /* Call with null lpBits to get the image size */ |
117 | 1465 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1466 OS.GetDIBits(hBitmapDC, handle, 0, height, null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
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1467 OS.MoveMemory(&bmiHeader, bmi.ptr, BITMAPINFOHEADER.sizeof); |
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1468 imageSize = bmiHeader.biSizeImage; |
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1469 } |
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1470 byte[] data = new byte[imageSize]; |
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1471 /* Get the bitmap data */ |
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1472 if (isDib) { |
117 | 1473 if (OS.IsWinCE) { |
1474 if (this.handle !is handle) { | |
1475 /* get image data from the temporary DIB */ | |
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1476 OS.MoveMemory(data.ptr, dib.dsBm.bmBits, imageSize); |
117 | 1477 } |
22
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1478 } else { |
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1479 OS.MoveMemory(data.ptr, bm.bmBits, imageSize); |
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1480 } |
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1481 } else { |
23 | 1482 auto hHeap = OS.GetProcessHeap(); |
1483 auto lpvBits = OS.HeapAlloc(hHeap, OS.HEAP_ZERO_MEMORY, imageSize); | |
1484 if (lpvBits is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
117 | 1485 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 1486 OS.GetDIBits(hBitmapDC, handle, 0, height, lpvBits, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS); |
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1487 OS.MoveMemory(data.ptr, lpvBits, imageSize); |
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1488 OS.HeapFree(hHeap, 0, lpvBits); |
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1489 } |
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1490 /* Calculate the palette */ |
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1491 PaletteData palette = null; |
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1492 if (depth <= 8) { |
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1493 RGB[] rgbs = new RGB[numColors]; |
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1494 if (isDib) { |
117 | 1495 static if (OS.IsWinCE) { |
22
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1496 /* |
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1497 * Feature on WinCE. GetDIBColorTable is not supported. |
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1498 * The workaround is to set a pixel to the desired |
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1499 * palette index and use getPixel to get the corresponding |
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1500 * RGB value. |
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1501 */ |
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1502 int red = 0, green = 0, blue = 0; |
95
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1503 byte[1] pBits; |
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1504 OS.MoveMemory(pBits.ptr, bm.bmBits, 1); |
22
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1505 byte oldValue = pBits[0]; |
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1506 int mask = (0xFF << (8 - bm.bmBitsPixel)) & 0x00FF; |
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1507 for (int i = 0; i < numColors; i++) { |
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1508 pBits[0] = cast(byte)((i << (8 - bm.bmBitsPixel)) | (pBits[0] & ~mask)); |
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1509 OS.MoveMemory(bm.bmBits, pBits.ptr, 1); |
22
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1510 int color = OS.GetPixel(hBitmapDC, 0, 0); |
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1511 blue = (color & 0xFF0000) >> 16; |
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1512 green = (color & 0xFF00) >> 8; |
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1513 red = color & 0xFF; |
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1514 rgbs[i] = new RGB(red, green, blue); |
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1515 } |
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1516 pBits[0] = oldValue; |
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1517 OS.MoveMemory(bm.bmBits, pBits.ptr, 1); |
22
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1518 } else { |
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1519 byte[] colors = new byte[numColors * 4]; |
23 | 1520 OS.GetDIBColorTable(hBitmapDC, 0, numColors, cast(RGBQUAD*)colors.ptr); |
22
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1521 int colorIndex = 0; |
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1522 for (int i = 0; i < rgbs.length; i++) { |
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1523 rgbs[i] = new RGB(colors[colorIndex + 2] & 0xFF, colors[colorIndex + 1] & 0xFF, colors[colorIndex] & 0xFF); |
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1524 colorIndex += 4; |
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1525 } |
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1526 } |
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1527 } else { |
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1528 int srcIndex = BITMAPINFOHEADER.sizeof; |
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1529 for (int i = 0; i < numColors; i++) { |
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1530 rgbs[i] = new RGB(bmi[srcIndex + 2] & 0xFF, bmi[srcIndex + 1] & 0xFF, bmi[srcIndex] & 0xFF); |
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1531 srcIndex += 4; |
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1532 } |
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1533 } |
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1534 palette = new PaletteData(rgbs); |
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1535 } else if (depth is 16) { |
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1536 palette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
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1537 } else if (depth is 24) { |
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1538 palette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
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1539 } else if (depth is 32) { |
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1540 palette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
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1541 } else { |
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1542 DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH); |
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1543 } |
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1544 /* Clean up */ |
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1545 OS.SelectObject(hBitmapDC, hOldBitmap); |
23 | 1546 if (oldPalette !is null) { |
22
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1547 OS.SelectPalette(hBitmapDC, oldPalette, false); |
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1548 OS.RealizePalette(hBitmapDC); |
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1549 } |
117 | 1550 static if (OS.IsWinCE) { |
22
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1551 if (handle !is this.handle) { |
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1552 /* free temporary DIB */ |
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1553 OS.DeleteObject (handle); |
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1554 } |
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1555 } |
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1556 OS.DeleteDC(hBitmapDC); |
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1557 |
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1558 /* Release the HDC for the device */ |
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1559 device.internal_dispose_GC(hDC, null); |
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1560 |
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1561 /* Construct and return the ImageData */ |
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1562 ImageData imageData = new ImageData(width, height, depth, palette, 4, data); |
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1563 imageData.transparentPixel = this.transparentPixel; |
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1564 imageData.alpha = alpha; |
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1565 if (alpha is -1 && alphaData !is null) { |
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1566 imageData.alphaData = new byte[alphaData.length]; |
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1567 System.arraycopy(alphaData, 0, imageData.alphaData, 0, alphaData.length); |
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1568 } |
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1569 return imageData; |
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1570 } |
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1571 default: |
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1572 DWT.error(DWT.ERROR_INVALID_IMAGE); |
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1573 return null; |
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1574 } |
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1575 } |
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1576 |
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1577 /** |
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1578 * Returns an integer hash code for the receiver. Any two |
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1579 * objects that return <code>true</code> when passed to |
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1580 * <code>equals</code> must return the same value for this |
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1581 * method. |
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1582 * |
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1583 * @return the receiver's hash |
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1584 * |
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1585 * @see #equals |
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1586 */ |
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1587 override public hash_t toHash () { |
22
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1588 return cast(hash_t)handle; |
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1589 } |
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1590 |
213 | 1591 void init_(int width, int height) { |
22
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1592 if (width <= 0 || height <= 0) { |
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1593 DWT.error (DWT.ERROR_INVALID_ARGUMENT); |
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1594 } |
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1595 type = DWT.BITMAP; |
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1596 auto hDC = device.internal_new_GC(null); |
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1597 handle = OS.CreateCompatibleBitmap(hDC, width, height); |
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1598 /* |
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1599 * Feature in Windows. CreateCompatibleBitmap() may fail |
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1600 * for large images. The fix is to create a DIB section |
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1601 * in that case. |
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1602 */ |
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1603 if (handle is null) { |
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1604 int bits = OS.GetDeviceCaps(hDC, OS.BITSPIXEL); |
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1605 int planes = OS.GetDeviceCaps(hDC, OS.PLANES); |
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1606 int depth = bits * planes; |
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1607 if (depth < 16) depth = 16; |
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1608 handle = createDIB(width, height, depth); |
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1609 } |
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1610 if (handle !is null) { |
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1611 auto memDC = OS.CreateCompatibleDC(hDC); |
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1612 auto hOldBitmap = OS.SelectObject(memDC, handle); |
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1613 OS.PatBlt(memDC, 0, 0, width, height, OS.PATCOPY); |
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1614 OS.SelectObject(memDC, hOldBitmap); |
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1615 OS.DeleteDC(memDC); |
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1616 } |
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1617 device.internal_dispose_GC(hDC, null); |
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1618 if (handle is null) { |
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1619 DWT.error(DWT.ERROR_NO_HANDLES, null, device.getLastError()); |
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1620 } |
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1621 } |
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1622 |
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1623 static HGDIOBJ createDIB(int width, int height, int depth) { |
23 | 1624 BITMAPINFOHEADER bmiHeader; |
22
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1625 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1626 bmiHeader.biWidth = width; |
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1627 bmiHeader.biHeight = -height; |
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1628 bmiHeader.biPlanes = 1; |
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1629 bmiHeader.biBitCount = cast(short)depth; |
117 | 1630 static if (OS.IsWinCE) bmiHeader.biCompression = OS.BI_BITFIELDS; |
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1631 else bmiHeader.biCompression = OS.BI_RGB; |
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1632 byte[] bmi = new byte[BITMAPINFOHEADER.sizeof + (OS.IsWinCE ? 12 : 0)]; |
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|
1633 OS.MoveMemory(bmi.ptr, &bmiHeader, BITMAPINFOHEADER.sizeof); |
22
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diff
changeset
|
1634 /* Set the rgb colors into the bitmap info */ |
117 | 1635 static if (OS.IsWinCE) { |
22
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changeset
|
1636 int redMask = 0xFF00; |
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1637 int greenMask = 0xFF0000; |
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1638 int blueMask = 0xFF000000; |
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|
1639 /* big endian */ |
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changeset
|
1640 int offset = BITMAPINFOHEADER.sizeof; |
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|
1641 bmi[offset] = cast(byte)((redMask & 0xFF000000) >> 24); |
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|
1642 bmi[offset + 1] = cast(byte)((redMask & 0xFF0000) >> 16); |
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|
1643 bmi[offset + 2] = cast(byte)((redMask & 0xFF00) >> 8); |
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1644 bmi[offset + 3] = cast(byte)((redMask & 0xFF) >> 0); |
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changeset
|
1645 bmi[offset + 4] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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changeset
|
1646 bmi[offset + 5] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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changeset
|
1647 bmi[offset + 6] = cast(byte)((greenMask & 0xFF00) >> 8); |
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changeset
|
1648 bmi[offset + 7] = cast(byte)((greenMask & 0xFF) >> 0); |
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|
1649 bmi[offset + 8] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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1650 bmi[offset + 9] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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1651 bmi[offset + 10] = cast(byte)((blueMask & 0xFF00) >> 8); |
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1652 bmi[offset + 11] = cast(byte)((blueMask & 0xFF) >> 0); |
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1653 } |
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1654 |
213 | 1655 void* pBits; |
1656 return OS.CreateDIBSection(null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS, &pBits, null, 0); | |
22
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1657 } |
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1658 |
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1659 /** |
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1660 * Feature in WinCE. GetIconInfo is not available in WinCE. |
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1661 * The workaround is to cache the object ImageData for images |
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1662 * of type DWT.ICON. The bitmaps hbmMask and hbmColor can then |
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1663 * be reconstructed by using our version of getIconInfo. |
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1664 * This function takes an ICONINFO object and sets the fields |
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1665 * hbmMask and hbmColor with the corresponding bitmaps it has |
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1666 * created. |
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1667 * Note. These bitmaps must be freed - as they would have to be |
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1668 * if the regular GetIconInfo had been used. |
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1669 */ |
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1670 static void GetIconInfo(Image image, ICONINFO* info) { |
197
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117
diff
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1671 int[] result = init_(image.device, null, image.data); |
23 | 1672 info.hbmColor = cast(HBITMAP)result[0]; |
1673 info.hbmMask = cast(HBITMAP)result[1]; | |
22
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1674 } |
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1675 |
197
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1676 static int[] init_(Device device, Image image, ImageData i) { |
22
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1677 |
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1678 /* |
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1679 * BUG in Windows 98: |
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1680 * A monochrome DIBSection will display as solid black |
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1681 * on Windows 98 machines, even though it contains the |
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1682 * correct data. The fix is to convert 1-bit ImageData |
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1683 * into 4-bit ImageData before creating the image. |
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1684 */ |
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1685 /* Windows does not support 2-bit images. Convert to 4-bit image. */ |
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1686 if ((OS.IsWin95 && i.depth is 1 && i.getTransparencyType() !is DWT.TRANSPARENCY_MASK) || i.depth is 2) { |
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1687 ImageData img = new ImageData(i.width, i.height, 4, i.palette); |
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1688 ImageData.blit(ImageData.BLIT_SRC, |
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1689 i.data, i.depth, i.bytesPerLine, i.getByteOrder(), 0, 0, i.width, i.height, null, null, null, |
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1690 ImageData.ALPHA_OPAQUE, null, 0, 0, 0, |
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1691 img.data, img.depth, img.bytesPerLine, i.getByteOrder(), 0, 0, img.width, img.height, null, null, null, |
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1692 false, false); |
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1693 img.transparentPixel = i.transparentPixel; |
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1694 img.maskPad = i.maskPad; |
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1695 img.maskData = i.maskData; |
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1696 img.alpha = i.alpha; |
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1697 img.alphaData = i.alphaData; |
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1698 i = img; |
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1699 } |
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1700 /* |
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1701 * Windows supports 16-bit mask of (0x7C00, 0x3E0, 0x1F), |
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1702 * 24-bit mask of (0xFF0000, 0xFF00, 0xFF) and 32-bit mask |
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1703 * (0x00FF0000, 0x0000FF00, 0x000000FF) as documented in |
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1704 * MSDN BITMAPINFOHEADER. Make sure the image is |
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1705 * Windows-supported. |
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1706 */ |
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1707 /* |
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1708 * Note on WinCE. CreateDIBSection requires the biCompression |
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1709 * field of the BITMAPINFOHEADER to be set to BI_BITFIELDS for |
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1710 * 16 and 32 bit direct images (see MSDN for CreateDIBSection). |
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1711 * In this case, the color mask can be set to any value. For |
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1712 * consistency, it is set to the same mask used by non WinCE |
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1713 * platforms in BI_RGB mode. |
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1714 */ |
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1715 if (i.palette.isDirect) { |
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1716 final PaletteData palette = i.palette; |
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1717 final int redMask = palette.redMask; |
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1718 final int greenMask = palette.greenMask; |
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1719 final int blueMask = palette.blueMask; |
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1720 int newDepth = i.depth; |
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1721 int newOrder = ImageData.MSB_FIRST; |
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1722 PaletteData newPalette = null; |
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1723 |
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1724 switch (i.depth) { |
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1725 case 8: |
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1726 newDepth = 16; |
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1727 newOrder = ImageData.LSB_FIRST; |
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1728 newPalette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
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1729 break; |
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1730 case 16: |
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1731 newOrder = ImageData.LSB_FIRST; |
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1732 if (!(redMask is 0x7C00 && greenMask is 0x3E0 && blueMask is 0x1F)) { |
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1733 newPalette = new PaletteData(0x7C00, 0x3E0, 0x1F); |
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1734 } |
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1735 break; |
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1736 case 24: |
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1737 if (!(redMask is 0xFF && greenMask is 0xFF00 && blueMask is 0xFF0000)) { |
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1738 newPalette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
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1739 } |
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1740 break; |
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1741 case 32: |
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1742 if (!(redMask is 0xFF00 && greenMask is 0xFF0000 && blueMask is 0xFF000000)) { |
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1743 newPalette = new PaletteData(0xFF00, 0xFF0000, 0xFF000000); |
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1744 } |
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1745 break; |
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1746 default: |
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1747 DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH); |
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1748 } |
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1749 if (newPalette !is null) { |
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1750 ImageData img = new ImageData(i.width, i.height, newDepth, newPalette); |
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1751 ImageData.blit(ImageData.BLIT_SRC, |
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1752 i.data, i.depth, i.bytesPerLine, i.getByteOrder(), 0, 0, i.width, i.height, redMask, greenMask, blueMask, |
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1753 ImageData.ALPHA_OPAQUE, null, 0, 0, 0, |
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1754 img.data, img.depth, img.bytesPerLine, newOrder, 0, 0, img.width, img.height, newPalette.redMask, newPalette.greenMask, newPalette.blueMask, |
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1755 false, false); |
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1756 if (i.transparentPixel !is -1) { |
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1757 img.transparentPixel = newPalette.getPixel(palette.getRGB(i.transparentPixel)); |
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1758 } |
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1759 img.maskPad = i.maskPad; |
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1760 img.maskData = i.maskData; |
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1761 img.alpha = i.alpha; |
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1762 img.alphaData = i.alphaData; |
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1763 i = img; |
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1764 } |
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1765 } |
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1766 /* Construct bitmap info header by hand */ |
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1767 RGB[] rgbs = i.palette.getRGBs(); |
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1768 bool useBitfields = OS.IsWinCE && (i.depth is 16 || i.depth is 32); |
23 | 1769 BITMAPINFOHEADER bmiHeader; |
22
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1770 bmiHeader.biSize = BITMAPINFOHEADER.sizeof; |
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1771 bmiHeader.biWidth = i.width; |
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1772 bmiHeader.biHeight = -i.height; |
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1773 bmiHeader.biPlanes = 1; |
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1774 bmiHeader.biBitCount = cast(short)i.depth; |
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1775 if (useBitfields) bmiHeader.biCompression = OS.BI_BITFIELDS; |
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1776 else bmiHeader.biCompression = OS.BI_RGB; |
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1777 bmiHeader.biClrUsed = rgbs is null ? 0 : rgbs.length; |
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1778 byte[] bmi; |
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1779 if (i.palette.isDirect) |
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1780 bmi = new byte[BITMAPINFOHEADER.sizeof + (useBitfields ? 12 : 0)]; |
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1781 else |
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1782 bmi = new byte[BITMAPINFOHEADER.sizeof + rgbs.length * 4]; |
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1783 OS.MoveMemory(bmi.ptr, &bmiHeader, BITMAPINFOHEADER.sizeof); |
22
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1784 /* Set the rgb colors into the bitmap info */ |
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1785 int offset = BITMAPINFOHEADER.sizeof; |
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1786 if (i.palette.isDirect) { |
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1787 if (useBitfields) { |
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1788 PaletteData palette = i.palette; |
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1789 int redMask = palette.redMask; |
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1790 int greenMask = palette.greenMask; |
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1791 int blueMask = palette.blueMask; |
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1792 /* |
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1793 * The color masks must be written based on the |
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1794 * endianness of the ImageData. |
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1795 */ |
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1796 if (i.getByteOrder() is ImageData.LSB_FIRST) { |
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1797 bmi[offset] = cast(byte)((redMask & 0xFF) >> 0); |
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1798 bmi[offset + 1] = cast(byte)((redMask & 0xFF00) >> 8); |
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1799 bmi[offset + 2] = cast(byte)((redMask & 0xFF0000) >> 16); |
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1800 bmi[offset + 3] = cast(byte)((redMask & 0xFF000000) >> 24); |
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1801 bmi[offset + 4] = cast(byte)((greenMask & 0xFF) >> 0); |
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1802 bmi[offset + 5] = cast(byte)((greenMask & 0xFF00) >> 8); |
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1803 bmi[offset + 6] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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1804 bmi[offset + 7] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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1805 bmi[offset + 8] = cast(byte)((blueMask & 0xFF) >> 0); |
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1806 bmi[offset + 9] = cast(byte)((blueMask & 0xFF00) >> 8); |
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1807 bmi[offset + 10] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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1808 bmi[offset + 11] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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1809 } else { |
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1810 bmi[offset] = cast(byte)((redMask & 0xFF000000) >> 24); |
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1811 bmi[offset + 1] = cast(byte)((redMask & 0xFF0000) >> 16); |
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1812 bmi[offset + 2] = cast(byte)((redMask & 0xFF00) >> 8); |
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1813 bmi[offset + 3] = cast(byte)((redMask & 0xFF) >> 0); |
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1814 bmi[offset + 4] = cast(byte)((greenMask & 0xFF000000) >> 24); |
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1815 bmi[offset + 5] = cast(byte)((greenMask & 0xFF0000) >> 16); |
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1816 bmi[offset + 6] = cast(byte)((greenMask & 0xFF00) >> 8); |
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1817 bmi[offset + 7] = cast(byte)((greenMask & 0xFF) >> 0); |
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1818 bmi[offset + 8] = cast(byte)((blueMask & 0xFF000000) >> 24); |
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1819 bmi[offset + 9] = cast(byte)((blueMask & 0xFF0000) >> 16); |
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1820 bmi[offset + 10] = cast(byte)((blueMask & 0xFF00) >> 8); |
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1821 bmi[offset + 11] = cast(byte)((blueMask & 0xFF) >> 0); |
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1822 } |
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1823 } |
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1824 } else { |
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1825 for (int j = 0; j < rgbs.length; j++) { |
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1826 bmi[offset] = cast(byte)rgbs[j].blue; |
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1827 bmi[offset + 1] = cast(byte)rgbs[j].green; |
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1828 bmi[offset + 2] = cast(byte)rgbs[j].red; |
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1829 bmi[offset + 3] = 0; |
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1830 offset += 4; |
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1831 } |
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1832 } |
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1833 void* pBits; |
23 | 1834 auto hDib = OS.CreateDIBSection(null, cast(BITMAPINFO*)bmi.ptr, OS.DIB_RGB_COLORS, &pBits, null, 0); |
1835 if (hDib is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1836 /* In case of a scanline pad other than 4, do the work to convert it */ |
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1837 byte[] data = i.data; |
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1838 if (i.scanlinePad !is 4 && (i.bytesPerLine % 4 !is 0)) { |
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1839 data = ImageData.convertPad(data, i.width, i.height, i.depth, i.scanlinePad, 4); |
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1840 } |
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1841 OS.MoveMemory(pBits, data.ptr, data.length); |
22
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1842 |
213 | 1843 int /*long*/ [] result = null; |
22
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1844 if (i.getTransparencyType() is DWT.TRANSPARENCY_MASK) { |
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1845 /* Get the HDC for the device */ |
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1846 auto hDC = device.internal_new_GC(null); |
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1847 |
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1848 /* Create the color bitmap */ |
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1849 auto hdcSrc = OS.CreateCompatibleDC(hDC); |
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1850 OS.SelectObject(hdcSrc, hDib); |
23 | 1851 auto hBitmap = OS.CreateCompatibleBitmap(hDC, i.width, i.height); |
1852 if (hBitmap is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1853 auto hdcDest = OS.CreateCompatibleDC(hDC); |
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1854 OS.SelectObject(hdcDest, hBitmap); |
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1855 OS.BitBlt(hdcDest, 0, 0, i.width, i.height, hdcSrc, 0, 0, OS.SRCCOPY); |
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1856 |
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1857 /* Release the HDC for the device */ |
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1858 device.internal_dispose_GC(hDC, null); |
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1859 |
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1860 /* Create the mask. Windows requires icon masks to have a scanline pad of 2. */ |
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1861 byte[] maskData = ImageData.convertPad(i.maskData, i.width, i.height, 1, i.maskPad, 2); |
23 | 1862 auto hMask = OS.CreateBitmap(i.width, i.height, 1, 1, maskData.ptr); |
1863 if (hMask is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1864 OS.SelectObject(hdcSrc, hMask); |
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1865 OS.PatBlt(hdcSrc, 0, 0, i.width, i.height, OS.DSTINVERT); |
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1866 OS.DeleteDC(hdcSrc); |
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1867 OS.DeleteDC(hdcDest); |
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1868 OS.DeleteObject(hDib); |
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1869 |
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1870 if (image is null) { |
23 | 1871 result = [ cast(int) hBitmap, cast(int) hMask]; |
22
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1872 } else { |
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1873 /* Create the icon */ |
23 | 1874 ICONINFO info; |
22
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1875 info.fIcon = true; |
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1876 info.hbmColor = hBitmap; |
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1877 info.hbmMask = hMask; |
23 | 1878 auto hIcon = OS.CreateIconIndirect(&info); |
1879 if (hIcon is null) DWT.error(DWT.ERROR_NO_HANDLES); | |
22
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1880 OS.DeleteObject(hBitmap); |
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1881 OS.DeleteObject(hMask); |
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1882 image.handle = hIcon; |
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1883 image.type = DWT.ICON; |
117 | 1884 static if (OS.IsWinCE) image.data = i; |
22
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1885 } |
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1886 } else { |
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1887 if (image is null) { |
23 | 1888 result = [ cast(int) hDib]; |
22
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1889 } else { |
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1890 image.handle = hDib; |
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1891 image.type = DWT.BITMAP; |
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1892 image.transparentPixel = i.transparentPixel; |
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1893 if (image.transparentPixel is -1) { |
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1894 image.alpha = i.alpha; |
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1895 if (i.alpha is -1 && i.alphaData !is null) { |
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1896 int length = i.alphaData.length; |
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1897 image.alphaData = new byte[length]; |
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1898 System.arraycopy(i.alphaData, 0, image.alphaData, 0, length); |
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1899 } |
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1900 } |
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1901 } |
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1902 } |
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1903 return result; |
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1904 } |
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1905 |
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1906 static int[] init_(Device device, Image image, ImageData source, ImageData mask) { |
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1907 /* Create a temporary image and locate the black pixel */ |
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1908 ImageData imageData; |
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1909 int blackIndex = 0; |
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1910 if (source.palette.isDirect) { |
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1911 imageData = new ImageData(source.width, source.height, source.depth, source.palette); |
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1912 } else { |
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1913 RGB black = new RGB(0, 0, 0); |
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1914 RGB[] rgbs = source.getRGBs(); |
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1915 if (source.transparentPixel !is -1) { |
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1916 /* |
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1917 * The source had transparency, so we can use the transparent pixel |
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1918 * for black. |
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1919 */ |
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1920 RGB[] newRGBs = new RGB[rgbs.length]; |
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1921 System.arraycopy(rgbs, 0, newRGBs, 0, rgbs.length); |
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1922 if (source.transparentPixel >= newRGBs.length) { |
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1923 /* Grow the palette with black */ |
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1924 rgbs = new RGB[source.transparentPixel + 1]; |
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1925 System.arraycopy(newRGBs, 0, rgbs, 0, newRGBs.length); |
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1926 for (int i = newRGBs.length; i <= source.transparentPixel; i++) { |
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1927 rgbs[i] = new RGB(0, 0, 0); |
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1928 } |
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1929 } else { |
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1930 newRGBs[source.transparentPixel] = black; |
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1931 rgbs = newRGBs; |
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1932 } |
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1933 blackIndex = source.transparentPixel; |
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1934 imageData = new ImageData(source.width, source.height, source.depth, new PaletteData(rgbs)); |
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1935 } else { |
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1936 while (blackIndex < rgbs.length) { |
23 | 1937 if (rgbs[blackIndex] ==/*eq*/ black) break; |
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1938 blackIndex++; |
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1939 } |
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1940 if (blackIndex is rgbs.length) { |
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1941 /* |
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1942 * We didn't find black in the palette, and there is no transparent |
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1943 * pixel we can use. |
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1944 */ |
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1945 if ((1 << source.depth) > rgbs.length) { |
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1946 /* We can grow the palette and add black */ |
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1947 RGB[] newRGBs = new RGB[rgbs.length + 1]; |
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1948 System.arraycopy(rgbs, 0, newRGBs, 0, rgbs.length); |
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1949 newRGBs[rgbs.length] = black; |
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1950 rgbs = newRGBs; |
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1951 } else { |
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1952 /* No room to grow the palette */ |
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1953 blackIndex = -1; |
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1954 } |
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1955 } |
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1956 imageData = new ImageData(source.width, source.height, source.depth, new PaletteData(rgbs)); |
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1957 } |
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1958 } |
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1959 if (blackIndex is -1) { |
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1960 /* There was no black in the palette, so just copy the data over */ |
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1961 System.arraycopy(source.data, 0, imageData.data, 0, imageData.data.length); |
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1962 } else { |
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1963 /* Modify the source image to contain black wherever the mask is 0 */ |
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1964 int[] imagePixels = new int[imageData.width]; |
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1965 int[] maskPixels = new int[mask.width]; |
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1966 for (int y = 0; y < imageData.height; y++) { |
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1967 source.getPixels(0, y, imageData.width, imagePixels, 0); |
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1968 mask.getPixels(0, y, mask.width, maskPixels, 0); |
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1969 for (int i = 0; i < imagePixels.length; i++) { |
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1970 if (maskPixels[i] is 0) imagePixels[i] = blackIndex; |
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1971 } |
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1972 imageData.setPixels(0, y, source.width, imagePixels, 0); |
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1973 } |
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1974 } |
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1975 imageData.maskPad = mask.scanlinePad; |
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1976 imageData.maskData = mask.data; |
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1977 return init_(device, image, imageData); |
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1978 } |
213 | 1979 void init_(ImageData i) { |
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1980 if (i is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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1981 init_(device, this, i); |
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1982 } |
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1983 |
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1984 /** |
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1985 * Invokes platform specific functionality to allocate a new GC handle. |
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1986 * <p> |
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1987 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public |
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1988 * API for <code>Image</code>. It is marked public only so that it |
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1989 * can be shared within the packages provided by DWT. It is not |
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1990 * available on all platforms, and should never be called from |
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1991 * application code. |
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1992 * </p> |
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1993 * |
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1994 * @param data the platform specific GC data |
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1995 * @return the platform specific GC handle |
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1996 */ |
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1997 public HDC internal_new_GC (GCData data) { |
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1998 if (handle is null) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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1999 /* |
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2000 * Create a new GC that can draw into the image. |
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2001 * Only supported for bitmaps. |
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2002 */ |
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2003 if (type !is DWT.BITMAP || memGC !is null) { |
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2004 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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2005 } |
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2006 |
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2007 /* Create a compatible HDC for the device */ |
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2008 auto hDC = device.internal_new_GC(null); |
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2009 auto imageDC = OS.CreateCompatibleDC(hDC); |
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2010 device.internal_dispose_GC(hDC, null); |
23 | 2011 if (imageDC is null) DWT.error(DWT.ERROR_NO_HANDLES); |
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2012 |
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2013 if (data !is null) { |
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2014 /* Set the GCData fields */ |
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2015 int mask = DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT; |
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2016 if ((data.style & mask) !is 0) { |
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2017 data.layout = (data.style & DWT.RIGHT_TO_LEFT) !is 0 ? OS.LAYOUT_RTL : 0; |
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2018 } else { |
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2019 data.style |= DWT.LEFT_TO_RIGHT; |
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2020 } |
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2021 data.device = device; |
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2022 data.image = this; |
213 | 2023 data.font = device.systemFont; |
22
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2024 } |
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2025 return imageDC; |
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2026 } |
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2027 |
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2028 /** |
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2029 * Invokes platform specific functionality to dispose a GC handle. |
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2030 * <p> |
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2031 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public |
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2032 * API for <code>Image</code>. It is marked public only so that it |
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2033 * can be shared within the packages provided by DWT. It is not |
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2034 * available on all platforms, and should never be called from |
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2035 * application code. |
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2036 * </p> |
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2037 * |
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2038 * @param hDC the platform specific GC handle |
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2039 * @param data the platform specific GC data |
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2040 */ |
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2041 public void internal_dispose_GC (HDC hDC, GCData data) { |
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2042 OS.DeleteDC(hDC); |
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2043 } |
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2044 |
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2045 /** |
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2046 * Returns <code>true</code> if the image has been disposed, |
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2047 * and <code>false</code> otherwise. |
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2048 * <p> |
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2049 * This method gets the dispose state for the image. |
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2050 * When an image has been disposed, it is an error to |
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2051 * invoke any other method using the image. |
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2052 * |
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2053 * @return <code>true</code> when the image is disposed and <code>false</code> otherwise |
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2054 */ |
48
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2055 override public bool isDisposed() { |
22
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2056 return handle is null; |
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2057 } |
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2058 |
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2059 /** |
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2060 * Sets the color to which to map the transparent pixel. |
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2061 * <p> |
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2062 * There are certain uses of <code>Images</code> that do not support |
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2063 * transparency (for example, setting an image into a button or label). |
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2064 * In these cases, it may be desired to simulate transparency by using |
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2065 * the background color of the widget to paint the transparent pixels |
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2066 * of the image. This method specifies the color that will be used in |
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2067 * these cases. For example: |
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2068 * <pre> |
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2069 * Button b = new Button(); |
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2070 * image.setBackground(b.getBackground()); |
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2071 * b.setImage(image); |
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2072 * </pre> |
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2073 * </p><p> |
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2074 * The image may be modified by this operation (in effect, the |
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2075 * transparent regions may be filled with the supplied color). Hence |
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2076 * this operation is not reversible and it is not legal to call |
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2077 * this function twice or with a null argument. |
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2078 * </p><p> |
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2079 * This method has no effect if the receiver does not have a transparent |
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2080 * pixel value. |
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2081 * </p> |
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2082 * |
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2083 * @param color the color to use when a transparent pixel is specified |
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2084 * |
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2085 * @exception IllegalArgumentException <ul> |
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2086 * <li>ERROR_NULL_ARGUMENT - if the color is null</li> |
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2087 * <li>ERROR_INVALID_ARGUMENT - if the color has been disposed</li> |
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2088 * </ul> |
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2089 * @exception DWTException <ul> |
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2090 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li> |
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2091 * </ul> |
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2092 */ |
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2093 public void setBackground(Color color) { |
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2094 /* |
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2095 * Note. Not implemented on WinCE. |
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2096 */ |
117 | 2097 static if (OS.IsWinCE) return; |
22
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2098 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED); |
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2099 if (color is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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2100 if (color.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
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2101 if (transparentPixel is -1) return; |
246 | 2102 transparentColor = -1; |
22
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2103 |
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2104 /* Get the HDC for the device */ |
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2105 auto hDC = device.internal_new_GC(null); |
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2106 |
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2107 /* Change the background color in the image */ |
23 | 2108 BITMAP bm; |
2109 OS.GetObject(handle, BITMAP.sizeof, &bm); | |
22
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2110 auto hdcMem = OS.CreateCompatibleDC(hDC); |
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2111 OS.SelectObject(hdcMem, handle); |
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2112 int maxColors = 1 << bm.bmBitsPixel; |
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2113 byte[] colors = new byte[maxColors * 4]; |
117 | 2114 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 2115 int numColors = OS.GetDIBColorTable(hdcMem, 0, maxColors, cast(RGBQUAD*)colors.ptr); |
22
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2116 int offset = transparentPixel * 4; |
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2117 colors[offset] = cast(byte)color.getBlue(); |
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2118 colors[offset + 1] = cast(byte)color.getGreen(); |
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2119 colors[offset + 2] = cast(byte)color.getRed(); |
117 | 2120 static if (OS.IsWinCE) DWT.error(DWT.ERROR_NOT_IMPLEMENTED); |
23 | 2121 OS.SetDIBColorTable(hdcMem, 0, numColors, cast(RGBQUAD*)colors.ptr); |
22
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2122 OS.DeleteDC(hdcMem); |
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2123 |
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2124 /* Release the HDC for the device */ |
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2125 device.internal_dispose_GC(hDC, null); |
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2126 } |
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2127 |
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2128 /** |
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2129 * Returns a string containing a concise, human-readable |
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2130 * description of the receiver. |
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2131 * |
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2132 * @return a string representation of the receiver |
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2133 */ |
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2134 override public String toString () { |
22
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2135 if (isDisposed()) return "Image {*DISPOSED*}"; |
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2136 return Format( "Image {{{}}", handle ); |
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2137 } |
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2138 |
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2139 /** |
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2140 * Invokes platform specific functionality to allocate a new image. |
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2141 * <p> |
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2142 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public |
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2143 * API for <code>Image</code>. It is marked public only so that it |
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2144 * can be shared within the packages provided by DWT. It is not |
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2145 * available on all platforms, and should never be called from |
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2146 * application code. |
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2147 * </p> |
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2148 * |
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2149 * @param device the device on which to allocate the color |
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2150 * @param type the type of the image (<code>DWT.BITMAP</code> or <code>DWT.ICON</code>) |
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2151 * @param handle the OS handle for the image |
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2152 * @return a new image object containing the specified device, type and handle |
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2153 */ |
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2154 public static Image win32_new(Device device, int type, HGDIOBJ handle) { |
213 | 2155 Image image = new Image(device); |
22
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2156 image.type = type; |
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2157 image.handle = handle; |
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2158 return image; |
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2159 } |
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2160 |
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2161 } |