Mercurial > projects > dwt2
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> |
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date | Sat, 09 Jul 2011 15:50:20 +0300 |
parents | b98647bc0aef |
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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 */ |
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118 public this (Device device, constRGB rgb) { |
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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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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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151 * @see #hashCode |
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152 */ |
120
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153 public override equals_t opEquals (Object object) { |
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154 if (object is this) return true; |
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155 if (!(cast(Color)object)) return false; |
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156 Color color = cast(Color) object; |
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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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160 /** |
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161 * Returns the amount of blue in the color, from 0 to 255. |
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162 * |
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163 * @return the blue component of the color |
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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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168 */ |
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169 public int getBlue () { |
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170 if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
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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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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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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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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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209 * </ul> |
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210 */ |
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211 public RGB getRGB () { |
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212 if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED); |
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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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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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224 * @see #equals |
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225 */ |
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226 public int hashCode () { |
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227 return handle; |
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228 } |
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229 |
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230 /** |
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231 * Allocates the operating system resources associated |
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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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235 * @param red the amount of red in the color |
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236 * @param green the amount of green in the color |
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237 * @param blue the amount of blue in the color |
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238 * |
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239 * @exception IllegalArgumentException <ul> |
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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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241 * </ul> |
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242 * |
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243 * @see #dispose |
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244 */ |
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245 void init_(int red, int green, int blue) { |
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246 if (red > 255 || red < 0 || green > 255 || green < 0 || blue > 255 || blue < 0) { |
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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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251 /* If this is not a palette-based device, return */ |
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252 auto hPal = device.hPalette; |
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253 if (hPal is null) return; |
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254 |
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255 int[] colorRefCount = device.colorRefCount; |
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256 /* Add this color to the default palette now */ |
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257 /* First find out if the color already exists */ |
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258 int index = OS.GetNearestPaletteIndex(hPal, handle); |
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259 /* See if the nearest color actually is the color */ |
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260 PALETTEENTRY entry; |
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261 OS.GetPaletteEntries(hPal, index, 1, &entry); |
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262 if ((entry.peRed is cast(byte)red) && (entry.peGreen is cast(byte)green) && |
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263 (entry.peBlue is cast(byte)blue)) { |
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264 /* Found the color. Increment the ref count and return */ |
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265 colorRefCount[index]++; |
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266 return; |
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267 } |
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268 /* Didn't find the color, allocate it now. Find the first free entry */ |
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269 int i = 0; |
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270 while (i < colorRefCount.length) { |
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271 if (colorRefCount[i] is 0) { |
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272 index = i; |
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273 break; |
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274 } |
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275 i++; |
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276 } |
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277 if (i is colorRefCount.length) { |
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278 /* No free entries, use the closest one */ |
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279 /* Remake the handle from the actual rgbs */ |
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280 handle = (entry.peRed & 0xFF) | ((entry.peGreen & 0xFF) << 8) | |
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281 ((entry.peBlue & 0xFF) << 16); |
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282 } else { |
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283 /* Found a free entry */ |
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284 entry.peRed = cast(BYTE)(red & 0xFF); |
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285 entry.peGreen = cast(BYTE)(green & 0xFF); |
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286 entry.peBlue = cast(BYTE)(blue & 0xFF); |
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287 entry.peFlags = 0; |
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288 OS.SetPaletteEntries(hPal, index, 1, &entry); |
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289 } |
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290 colorRefCount[index]++; |
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291 } |
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292 |
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293 /** |
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294 * Returns <code>true</code> if the color has been disposed, |
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295 * and <code>false</code> otherwise. |
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296 * <p> |
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297 * This method gets the dispose state for the color. |
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298 * When a color has been disposed, it is an error to |
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299 * invoke any other method using the color. |
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300 * |
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301 * @return <code>true</code> when the color is disposed and <code>false</code> otherwise |
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302 */ |
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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 } |