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Fixes to get dwt to work with dmd and ldc
author Jacob Carlborg <doob@me.com>
date Wed, 08 Jul 2009 21:56:44 +0200
parents cfa563df4fdd
children
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1 /*******************************************************************************
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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
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10 *
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11 * Port to the D programming language:
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12 * Jacob Carlborg <doob@me.com>
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13 *******************************************************************************/
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14 module dwt.graphics.Color;
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16
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17 import dwt.DWT;
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18 import dwt.DWTException;
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19
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20 import tango.text.convert.Format;
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21
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22 import dwt.dwthelper.utils;
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23 import dwt.graphics.Device;
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24 import dwt.graphics.Resource;
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25 import dwt.graphics.RGB;
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26 import dwt.internal.c.Carbon;
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27
0
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28 /**
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29 * Instances of this class manage the operating system resources that
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30 * implement DWT's RGB color model. To create a color you can either
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31 * specify the individual color components as integers in the range
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32 * 0 to 255 or provide an instance of an <code>RGB</code>.
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33 * <p>
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34 * Application code must explicitly invoke the <code>Color.dispose()</code>
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35 * method to release the operating system resources managed by each instance
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36 * when those instances are no longer required.
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37 * </p>
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38 *
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39 * @see RGB
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40 * @see Device#getSystemColor
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41 * @see <a href="http://www.eclipse.org/swt/snippets/#color">Color and RGB snippets</a>
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42 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: PaintExample</a>
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43 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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44 */
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45 public final class Color : Resource {
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47 alias Resource.init_ init_;
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48
0
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49 /**
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50 * the handle to the OS color resource
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51 * (Warning: This field is platform dependent)
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52 * <p>
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53 * <b>IMPORTANT:</b> This field is <em>not</em> part of the DWT
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54 * public API. It is marked public only so that it can be shared
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55 * within the packages provided by DWT. It is not available on all
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56 * platforms and should never be accessed from application code.
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57 * </p>
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58 */
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59 public CGFloat[] handle;
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61 this(Device device) {
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62 super(device);
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63 }
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64
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65 /**
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66 * Constructs a new instance of this class given a device and the
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67 * desired red, green and blue values expressed as ints in the range
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68 * 0 to 255 (where 0 is black and 255 is full brightness). On limited
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69 * color devices, the color instance created by this call may not have
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70 * the same RGB values as the ones specified by the arguments. The
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71 * RGB values on the returned instance will be the color values of
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72 * the operating system color.
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73 * <p>
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74 * You must dispose the color when it is no longer required.
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75 * </p>
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76 *
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77 * @param device the device on which to allocate the color
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78 * @param red the amount of red in the color
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79 * @param green the amount of green in the color
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80 * @param blue the amount of blue in the color
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81 *
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82 * @exception IllegalArgumentException <ul>
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83 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
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84 * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li>
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85 * </ul>
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86 *
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87 * @see #dispose
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88 */
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89 public this(Device device, int red, int green, int blue) {
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90 super(device);
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91 init_(red, green, blue);
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92 init_();
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93 }
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94
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95 /**
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96 * Constructs a new instance of this class given a device and an
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97 * <code>RGB</code> describing the desired red, green and blue values.
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98 * On limited color devices, the color instance created by this call
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99 * may not have the same RGB values as the ones specified by the
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100 * argument. The RGB values on the returned instance will be the color
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101 * values of the operating system color.
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102 * <p>
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103 * You must dispose the color when it is no longer required.
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104 * </p>
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105 *
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106 * @param device the device on which to allocate the color
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107 * @param rgb the RGB values of the desired color
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108 *
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109 * @exception IllegalArgumentException <ul>
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110 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
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111 * <li>ERROR_NULL_ARGUMENT - if the rgb argument is null</li>
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112 * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue components of the argument are not between 0 and 255</li>
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113 * </ul>
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114 *
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115 * @see #dispose
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116 */
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117 public this(Device device, RGB rgb) {
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118 super(device);
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119 if (rgb is null) DWT.error(DWT.ERROR_NULL_ARGUMENT);
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120 init_(rgb.red, rgb.green, rgb.blue);
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121 init_();
0
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122 }
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123
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124 void destroy() {
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125 handle = null;
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126 }
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127
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128 /**
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129 * Compares the argument to the receiver, and returns true
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130 * if they represent the <em>same</em> object using a class
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131 * specific comparison.
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132 *
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133 * @param object the object to compare with this object
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134 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
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135 *
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136 * @see #hashCode
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137 */
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138 public bool equals(Object object) {
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139 if (object is this) return true;
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140 if (!( null !is cast(Color)object )) return false;
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141 Color color = cast(Color)object;
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142 CGFloat[] rgbColor = color.handle;
0
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143 if (handle is rgbColor) return true;
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144 return device is color.device &&
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145 cast(int)(handle[0] * 255) is cast(int)(rgbColor[0] * 255) &&
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146 cast(int)(handle[1] * 255) is cast(int)(rgbColor[1] * 255) &&
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147 cast(int)(handle[2] * 255) is cast(int)(rgbColor[2] * 255);
0
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148 }
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149
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150 alias equals opEquals;
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151
0
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152 /**
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153 * Returns the amount of blue in the color, from 0 to 255.
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154 *
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155 * @return the blue component of the color
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156 *
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157 * @exception DWTException <ul>
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158 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
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159 * </ul>
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160 */
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161 public int getBlue() {
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162 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED);
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163 return cast(int)(handle[2] * 255);
0
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164 }
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165
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166 /**
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167 * Returns the amount of green in the color, from 0 to 255.
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168 *
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169 * @return the green component of the color
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170 *
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171 * @exception DWTException <ul>
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172 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
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173 * </ul>
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174 */
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175 public int getGreen() {
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176 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED);
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177 return cast(int)(handle[1] * 255);
0
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178 }
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179
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180 /**
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181 * Returns the amount of red in the color, from 0 to 255.
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182 *
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183 * @return the red component of the color
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184 *
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185 * @exception DWTException <ul>
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186 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
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187 * </ul>
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188 */
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189 public int getRed() {
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190 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED);
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191 return cast(int)(handle[0] * 255);
0
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192 }
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193
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194 /**
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195 * Returns an integer hash code for the receiver. Any two
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196 * objects that return <code>true</code> when passed to
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197 * <code>equals</code> must return the same value for this
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198 * method.
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199 *
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200 * @return the receiver's hash
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201 *
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202 * @see #equals
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203 */
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204 public hash_t toHash() {
0
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205 if (isDisposed()) return 0;
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206 return cast(int)(handle[0] * 255) ^ cast(int)(handle[1] * 255) ^ cast(int)(handle[2] * 255);
0
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207 }
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208
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209 alias toHash hashCode;
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210
0
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211 /**
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212 * Returns an <code>RGB</code> representing the receiver.
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213 *
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214 * @return the RGB for the color
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215 *
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216 * @exception DWTException <ul>
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217 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
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218 * </ul>
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219 */
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220 public RGB getRGB () {
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221 if (isDisposed()) DWT.error(DWT.ERROR_GRAPHIC_DISPOSED);
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222 return new RGB(getRed(), getGreen(), getBlue());
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223 }
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224
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225 /**
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226 * Invokes platform specific functionality to allocate a new color.
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227 * <p>
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228 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
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229 * API for <code>Color</code>. It is marked public only so that it
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230 * can be shared within the packages provided by DWT. It is not
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231 * available on all platforms, and should never be called from
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232 * application code.
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233 * </p>
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234 *
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235 * @param device the device on which to allocate the color
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236 * @param handle the handle for the color
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237 *
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238 * @private
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239 */
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240 public static Color cocoa_new(Device device, CGFloat[] rgbColor) {
0
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241 Color color = new Color(device);
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242 color.handle = rgbColor;
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243 return color;
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244 }
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245
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db5a898b2119 Fixed a lot of compile errors
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diff changeset
246 void init_(int red, int green, int blue) {
0
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247 if ((red > 255) || (red < 0) ||
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248 (green > 255) || (green < 0) ||
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249 (blue > 255) || (blue < 0)) {
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250 DWT.error(DWT.ERROR_INVALID_ARGUMENT);
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251 }
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252 CGFloat[] rgbColor = new CGFloat[4];
0
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253 rgbColor[0] = red / 255f;
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254 rgbColor[1] = green / 255f;
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255 rgbColor[2] = blue / 255f;
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256 rgbColor[3] = 1;
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257 handle = rgbColor;
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258 }
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259
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260 /**
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261 * Returns <code>true</code> if the color has been disposed,
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262 * and <code>false</code> otherwise.
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263 * <p>
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264 * This method gets the dispose state for the color.
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265 * When a color has been disposed, it is an error to
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266 * invoke any other method using the color.
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267 *
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268 * @return <code>true</code> when the color is disposed and <code>false</code> otherwise
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269 */
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270 public bool isDisposed() {
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271 return handle is null;
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272 }
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273
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274 /**
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275 * Returns a string containing a concise, human-readable
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276 * description of the receiver.
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277 *
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278 * @return a string representation of the receiver
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279 */
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280 public String toString () {
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281 if (isDisposed()) return "Color {*DISPOSED*}";
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282 return Format("Color {{}{}{}{}{}{}" , getRed() , ", " , getGreen() , ", " , getBlue() , "}");
0
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283 }
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284
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285 }