annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/graphics/Color.d @ 120:536e43f63c81

Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661 ===D2=== * added [Try]Immutable/Const/Shared templates to work with differenses in D1/D2 instead of version statements used these templates to work with strict type storage rules of dmd-2.053 * com.ibm.icu now also compilable with D2, but not tested yet * small fixes Snippet288 - shared data is in TLS ===Phobos=== * fixed critical bugs in Phobos implemention completely incorrect segfault prone fromStringz (Linux's port ruthless killer) terrible, incorrect StringBuffer realization (StyledText killer) * fixed small bugs as well Snippet72 - misprint in the snippet * implemented missed functionality for Phobos ByteArrayOutputStream implemented (image loading available) formatting correctly works for all DWT's cases As a result, folowing snippets now works with Phobos (Snippet### - what is fixed): Snippet24, 42, 111, 115, 130, 235, 276 - bad string formatting Snippet48, 282 - crash on image loading Snippet163, 189, 211, 213, 217, 218, 222 - crash on copy/cut in StyledText Snippet244 - hang-up ===Tango=== * few changes for the latest Tango trunc-r5661 * few small performance improvments ===General=== * implMissing-s for only one version changed to implMissingInTango/InPhobos * incorrect calls to Format in toString-s fixed * fixed loading \uXXXX characters in ResourceBundle * added good UTF-8 support for StyledText, TextLayout (Win32) and friends UTF functions revised and tested. It is now in java.nonstandard.*Utf modules StyledText and TextLayout (Win32) modules revised for UTF-8 support * removed small diferences in most identical files in *.swt.* folders *.swt.internal.image, *.swt.events and *.swt.custom are identical in Win32/Linux32 now 179 of 576 (~31%) files in *.swt.* folders are fully identical * Win32: snippets now have right subsystem, pretty icons and native system style controls * small fixes in snippets Snippet44 - it's not Snippet44 Snippet212 - functions work with different images and offsets arrays Win32: Snippet282 - crash on close if the button has an image Snippet293 - setGrayed is commented and others Win32: As a result, folowing snippets now works Snippet68 - color doesn't change Snippet163, 189, 211, 213, 217, 218, 222 - UTF-8 issues (see above) Snippet193 - no tabel headers
author Denis Shelomovskij <verylonglogin.reg@gmail.com>
date Sat, 09 Jul 2011 15:50:20 +0300
parents b98647bc0aef
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 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.swt.graphics.Color;
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14
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15 import org.eclipse.swt.SWT;
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16 import org.eclipse.swt.SWTException;
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17 import org.eclipse.swt.internal.win32.OS;
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18
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19 import org.eclipse.swt.graphics.Resource;
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20 import org.eclipse.swt.graphics.RGB;
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21 import org.eclipse.swt.graphics.Device;
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22
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23 import java.lang.all;
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24
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25 /**
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26 * Instances of this class manage the operating system resources that
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27 * implement SWT's RGB color model. To create a color you can either
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28 * specify the individual color components as integers in the range
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29 * 0 to 255 or provide an instance of an <code>RGB</code>.
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30 * <p>
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31 * Application code must explicitly invoke the <code>Color.dispose()</code>
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32 * method to release the operating system resources managed by each instance
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33 * when those instances are no longer required.
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34 * </p>
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35 *
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36 * @see RGB
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37 * @see Device#getSystemColor
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38 * @see <a href="http://www.eclipse.org/swt/snippets/#color">Color and RGB snippets</a>
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39 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: PaintExample</a>
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40 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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41 */
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42
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43 public final class Color : Resource {
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44
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45 alias Resource.init_ init_;
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46
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47 /**
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48 * the handle to the OS color resource
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49 * (Warning: This field is platform dependent)
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50 * <p>
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51 * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT
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52 * public API. It is marked public only so that it can be shared
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53 * within the packages provided by SWT. It is not available on all
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54 * platforms and should never be accessed from application code.
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55 * </p>
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56 */
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57 public COLORREF handle;
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58
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59 /**
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60 * Prevents uninitialized instances from being created outside the package.
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61 */
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62 this(Device device) {
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63 super(device);
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64 }
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65
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66 /**
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67 * Constructs a new instance of this class given a device and the
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68 * desired red, green and blue values expressed as ints in the range
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69 * 0 to 255 (where 0 is black and 255 is full brightness). On limited
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70 * color devices, the color instance created by this call may not have
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71 * the same RGB values as the ones specified by the arguments. The
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72 * RGB values on the returned instance will be the color values of
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73 * the operating system color.
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74 * <p>
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75 * You must dispose the color when it is no longer required.
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76 * </p>
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77 *
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78 * @param device the device on which to allocate the color
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79 * @param red the amount of red in the color
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80 * @param green the amount of green in the color
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81 * @param blue the amount of blue in the color
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82 *
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83 * @exception IllegalArgumentException <ul>
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84 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
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85 * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li>
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86 * </ul>
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87 *
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88 * @see #dispose
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89 */
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90 public this (Device device, int red, int green, int blue) {
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91 super(device);
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92 init_(red, green, blue);
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93 init_();
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94 }
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95
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96 /**
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97 * Constructs a new instance of this class given a device and an
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98 * <code>RGB</code> describing the desired red, green and blue values.
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99 * On limited color devices, the color instance created by this call
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100 * may not have the same RGB values as the ones specified by the
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101 * argument. The RGB values on the returned instance will be the color
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102 * values of the operating system color.
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103 * <p>
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104 * You must dispose the color when it is no longer required.
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105 * </p>
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106 *
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107 * @param device the device on which to allocate the color
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108 * @param rgb the RGB values of the desired color
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109 *
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110 * @exception IllegalArgumentException <ul>
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111 * <li>ERROR_NULL_ARGUMENT - if device is null and there is no current device</li>
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112 * <li>ERROR_NULL_ARGUMENT - if the rgb argument is null</li>
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113 * <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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114 * </ul>
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115 *
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116 * @see #dispose
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117 */
43
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118 public this (Device device, constRGB rgb) {
0
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119 super(device);
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120 if (rgb is null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
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121 init_(rgb.red, rgb.green, rgb.blue);
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122 init_();
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123 }
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124
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125 void destroy() {
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126 /*
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127 * If this is a palette-based device,
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128 * Decrease the reference count for this color.
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129 * If the reference count reaches 0, the slot may
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130 * be reused when another color is allocated.
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131 */
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132 auto hPal = device.hPalette;
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133 if (hPal !is null) {
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134 int index = OS.GetNearestPaletteIndex(hPal, handle);
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135 int[] colorRefCount = device.colorRefCount;
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136 if (colorRefCount[index] > 0) {
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137 colorRefCount[index]--;
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138 }
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139 }
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140 handle = -1;
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141 }
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142
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143 /**
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144 * Compares the argument to the receiver, and returns true
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145 * if they represent the <em>same</em> object using a class
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parents:
diff changeset
146 * specific comparison.
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147 *
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148 * @param object the object to compare with this object
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149 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
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150 *
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parents:
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151 * @see #hashCode
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152 */
120
536e43f63c81 Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents: 43
diff changeset
153 public override equals_t opEquals (Object object) {
0
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parents:
diff changeset
154 if (object is this) return true;
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parents:
diff changeset
155 if (!(cast(Color)object)) return false;
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parents:
diff changeset
156 Color color = cast(Color) object;
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parents:
diff changeset
157 return device is color.device && (handle & 0xFFFFFF) is (color.handle & 0xFFFFFF);
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158 }
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159
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parents:
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160 /**
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parents:
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161 * Returns the amount of blue in the color, from 0 to 255.
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parents:
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162 *
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parents:
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163 * @return the blue component of the color
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parents:
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164 *
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165 * @exception SWTException <ul>
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166 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
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167 * </ul>
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parents:
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168 */
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parents:
diff changeset
169 public int getBlue () {
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parents:
diff changeset
170 if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
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parents:
diff changeset
171 return (handle & 0xFF0000) >> 16;
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172 }
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173
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174 /**
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175 * Returns the amount of green in the color, from 0 to 255.
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176 *
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177 * @return the green component of the color
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178 *
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179 * @exception SWTException <ul>
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180 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
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181 * </ul>
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182 */
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183 public int getGreen () {
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184 if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
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185 return (handle & 0xFF00) >> 8 ;
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186 }
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187
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188 /**
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189 * Returns the amount of red in the color, from 0 to 255.
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190 *
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191 * @return the red component of the color
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parents:
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192 *
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193 * @exception SWTException <ul>
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194 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
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195 * </ul>
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196 */
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197 public int getRed () {
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diff changeset
198 if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
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199 return handle & 0xFF;
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200 }
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201
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202 /**
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203 * Returns an <code>RGB</code> representing the receiver.
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parents:
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204 *
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205 * @return the RGB for the color
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206 *
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207 * @exception SWTException <ul>
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208 * <li>ERROR_GRAPHIC_DISPOSED - if the receiver has been disposed</li>
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parents:
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209 * </ul>
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parents:
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210 */
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parents:
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211 public RGB getRGB () {
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diff changeset
212 if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
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parents:
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213 return new RGB(cast(int)handle & 0xFF,cast(int) (handle & 0xFF00) >> 8,cast(int) (handle & 0xFF0000) >> 16);
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214 }
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215
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216 /**
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parents:
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217 * Returns an integer hash code for the receiver. Any two
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218 * objects that return <code>true</code> when passed to
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219 * <code>equals</code> must return the same value for this
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220 * method.
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221 *
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222 * @return the receiver's hash
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223 *
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parents:
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224 * @see #equals
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225 */
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226 public int hashCode () {
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diff changeset
227 return handle;
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228 }
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229
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230 /**
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parents:
diff changeset
231 * Allocates the operating system resources associated
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parents:
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232 * with the receiver.
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233 *
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234 * @param device the device on which to allocate the color
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parents:
diff changeset
235 * @param red the amount of red in the color
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parents:
diff changeset
236 * @param green the amount of green in the color
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parents:
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237 * @param blue the amount of blue in the color
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238 *
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parents:
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239 * @exception IllegalArgumentException <ul>
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parents:
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240 * <li>ERROR_INVALID_ARGUMENT - if the red, green or blue argument is not between 0 and 255</li>
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parents:
diff changeset
241 * </ul>
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diff changeset
242 *
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243 * @see #dispose
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parents:
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244 */
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parents:
diff changeset
245 void init_(int red, int green, int blue) {
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parents:
diff changeset
246 if (red > 255 || red < 0 || green > 255 || green < 0 || blue > 255 || blue < 0) {
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parents:
diff changeset
247 SWT.error(SWT.ERROR_INVALID_ARGUMENT);
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248 }
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249 handle = (red & 0xFF) | ((green & 0xFF) << 8) | ((blue & 0xFF) << 16);
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250
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parents:
diff changeset
251 /* If this is not a palette-based device, return */
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parents:
diff changeset
252 auto hPal = device.hPalette;
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parents:
diff changeset
253 if (hPal is null) return;
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254
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diff changeset
255 int[] colorRefCount = device.colorRefCount;
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parents:
diff changeset
256 /* Add this color to the default palette now */
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parents:
diff changeset
257 /* First find out if the color already exists */
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parents:
diff changeset
258 int index = OS.GetNearestPaletteIndex(hPal, handle);
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parents:
diff changeset
259 /* See if the nearest color actually is the color */
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parents:
diff changeset
260 PALETTEENTRY entry;
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parents:
diff changeset
261 OS.GetPaletteEntries(hPal, index, 1, &entry);
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parents:
diff changeset
262 if ((entry.peRed is cast(byte)red) && (entry.peGreen is cast(byte)green) &&
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
263 (entry.peBlue is cast(byte)blue)) {
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
264 /* Found the color. Increment the ref count and return */
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parents:
diff changeset
265 colorRefCount[index]++;
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266 return;
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parents:
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267 }
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parents:
diff changeset
268 /* Didn't find the color, allocate it now. Find the first free entry */
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parents:
diff changeset
269 int i = 0;
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parents:
diff changeset
270 while (i < colorRefCount.length) {
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parents:
diff changeset
271 if (colorRefCount[i] is 0) {
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parents:
diff changeset
272 index = i;
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parents:
diff changeset
273 break;
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parents:
diff changeset
274 }
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parents:
diff changeset
275 i++;
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parents:
diff changeset
276 }
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parents:
diff changeset
277 if (i is colorRefCount.length) {
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parents:
diff changeset
278 /* No free entries, use the closest one */
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parents:
diff changeset
279 /* Remake the handle from the actual rgbs */
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parents:
diff changeset
280 handle = (entry.peRed & 0xFF) | ((entry.peGreen & 0xFF) << 8) |
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parents:
diff changeset
281 ((entry.peBlue & 0xFF) << 16);
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parents:
diff changeset
282 } else {
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parents:
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283 /* Found a free entry */
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parents:
diff changeset
284 entry.peRed = cast(BYTE)(red & 0xFF);
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parents:
diff changeset
285 entry.peGreen = cast(BYTE)(green & 0xFF);
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parents:
diff changeset
286 entry.peBlue = cast(BYTE)(blue & 0xFF);
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parents:
diff changeset
287 entry.peFlags = 0;
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parents:
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288 OS.SetPaletteEntries(hPal, index, 1, &entry);
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parents:
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289 }
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parents:
diff changeset
290 colorRefCount[index]++;
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parents:
diff changeset
291 }
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parents:
diff changeset
292
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parents:
diff changeset
293 /**
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parents:
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294 * Returns <code>true</code> if the color has been disposed,
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parents:
diff changeset
295 * and <code>false</code> otherwise.
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parents:
diff changeset
296 * <p>
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parents:
diff changeset
297 * This method gets the dispose state for the color.
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parents:
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298 * When a color has been disposed, it is an error to
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parents:
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299 * invoke any other method using the color.
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parents:
diff changeset
300 *
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parents:
diff changeset
301 * @return <code>true</code> when the color is disposed and <code>false</code> otherwise
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parents:
diff changeset
302 */
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parents:
diff changeset
303 override public bool isDisposed() {
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304 return handle is -1;
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305 }
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306
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307 /**
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308 * Returns a string containing a concise, human-readable
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309 * description of the receiver.
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310 *
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311 * @return a string representation of the receiver
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312 */
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313 override public String toString () {
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314 if (isDisposed()) return "Color {*DISPOSED*}"; //$NON-NLS-1$
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315 return Format( "Color {{{}, {}, {}}", getRed(), getGreen(), getBlue()); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
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316 }
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317
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318 /**
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319 * Invokes platform specific functionality to allocate a new color.
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320 * <p>
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321 * <b>IMPORTANT:</b> This method is <em>not</em> part of the public
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322 * API for <code>Color</code>. It is marked public only so that it
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323 * can be shared within the packages provided by SWT. It is not
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324 * available on all platforms, and should never be called from
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325 * application code.
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326 * </p>
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327 *
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328 * @param device the device on which to allocate the color
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329 * @param handle the handle for the color
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330 * @return a new color object containing the specified device and handle
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331 */
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332 public static Color win32_new(Device device, int handle) {
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333 Color color = new Color(device);
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334 color.disposeChecking = false;
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335 color.handle = handle;
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336 return color;
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337 }
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338
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339 }