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1 /*******************************************************************************
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2 * Copyright (c) 2004, 2006 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 dwtx.jface.resource.RGBColorDescriptor;
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14
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15 import dwtx.jface.resource.ColorDescriptor;
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16
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17 import dwt.graphics.Color;
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18 import dwt.graphics.Device;
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19 import dwt.graphics.RGB;
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20
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21 import dwt.dwthelper.utils;
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22
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23 /**
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24 * Describes a color by its RGB values.
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25 *
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26 * @since 3.1
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27 */
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28 class RGBColorDescriptor : ColorDescriptor {
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29
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30 private RGB color;
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31
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32 /**
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33 * Color being copied, or null if none
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34 */
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35 private Color originalColor = null;
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36
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37 /**
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38 * Creates a new RGBColorDescriptor given some RGB values
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39 *
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40 * @param color RGB values (not null)
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41 */
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42 public this(RGB color) {
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43 this.color = color;
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44 }
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45
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46 /**
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47 * Creates a new RGBColorDescriptor that describes an existing color.
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48 *
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49 * @since 3.1
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50 *
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51 * @param originalColor a color to describe
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52 */
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53 public this(Color originalColor) {
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54 this(originalColor.getRGB());
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55 this.originalColor = originalColor;
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56 }
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57
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58 /* (non-Javadoc)
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59 * @see java.lang.Object#equals(java.lang.Object)
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60 */
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61 public override int opEquals(Object obj) {
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62 if ( auto other = cast(RGBColorDescriptor)obj ) {
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63 return other.color.opEquals(color) && other.originalColor is originalColor;
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64 }
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65
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66 return false;
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67 }
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68
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69 /* (non-Javadoc)
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70 * @see java.lang.Object#hashCode()
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71 */
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72 public override hash_t toHash() {
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73 return color.toHash();
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74 }
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75
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76 /* (non-Javadoc)
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77 * @see dwtx.jface.resources.ColorDescriptor#createColor()
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78 */
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79 public Color createColor(Device device) {
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80 // If this descriptor is wrapping an existing color, then we can return the original color
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81 // if this is the same device.
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82 if (originalColor !is null) {
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83 // If we're allocating on the same device as the original color, return the original.
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84 if (originalColor.getDevice() is device) {
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85 return originalColor;
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86 }
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87 }
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88
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89 return new Color(device, color);
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90 }
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91
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92 /* (non-Javadoc)
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93 * @see dwtx.jface.resource.ColorDescriptor#destroyColor(dwt.graphics.Color)
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94 */
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95 public void destroyColor(Color toDestroy) {
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96 if (toDestroy is originalColor) {
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97 return;
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98 }
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99
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100 toDestroy.dispose();
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101 }
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102 }
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