1 /*******************************************************************************
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2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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3 * in Industry THTH ry.
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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10 * VTT Technical Research Centre of Finland - initial API and implementation
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11 *******************************************************************************/
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15 package org.simantics.utils.ui.gfx;
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17 import java.util.Collection;
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19 import org.eclipse.jface.resource.ImageDescriptor;
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20 import org.eclipse.swt.SWT;
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21 import org.eclipse.swt.graphics.Image;
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22 import org.eclipse.swt.graphics.ImageData;
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23 import org.eclipse.swt.graphics.PaletteData;
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24 import org.eclipse.swt.graphics.Point;
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25 import org.eclipse.swt.graphics.RGB;
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26 import org.simantics.utils.datastructures.Array;
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29 * CompositionImageDescriptor is image description that composes
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30 * multiple images into one image.
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33 * @author Toni Kalajainen
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35 @SuppressWarnings("deprecation")
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36 public class CompositionImageDescriptor extends ImageDescriptor {
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38 public static final PaletteData DEFAULT_PALETTEDATA =
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39 new PaletteData(0x00ff0000, 0x0000ff00, 0x000000ff);
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41 public static ImageDescriptor compose(ImageDescriptor ... imageDescriptors) {
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42 if (imageDescriptors.length == 1)
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43 return imageDescriptors[0];
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44 return new CompositionImageDescriptor(imageDescriptors);
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47 public static ImageDescriptor compose(Collection<ImageDescriptor> imageDescriptors) {
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48 int size = imageDescriptors.size();
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50 return imageDescriptors.iterator().next();
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51 return new CompositionImageDescriptor(imageDescriptors.toArray(new ImageDescriptor[size]));
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54 ImageCache cache = ImageCache.getInstance();
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55 final Array<ImageDescriptor> ids;
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58 public CompositionImageDescriptor(ImageDescriptor[] ids) {
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59 this.ids = new Array<ImageDescriptor>(ids);
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60 // Make sure that the argument is valid
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61 assert (this.ids.size() > 0);
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62 for (ImageDescriptor id : ids)
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63 assert (id != null);
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66 public CompositionImageDescriptor(Array<ImageDescriptor> ids) {
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68 // Make sure that the argument is valid
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69 assert (this.ids.size() > 0);
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70 for (ImageDescriptor id : ids.toArray())
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71 assert (id != null);
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75 public ImageData getImageData() {
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76 ImageDescriptor [] _ids = ids.toArray();
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78 return cache.getImage(_ids[0]).getImageData();
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80 Point s = getSize();
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81 PaletteData palette = DEFAULT_PALETTEDATA;
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82 ImageData id = new ImageData(s.x, s.y, 24, palette);
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84 for (int i=0; i<_ids.length; i++)
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86 ImageData layer = ImageCache.getInstance().getImage(_ids[i]).getImageData();
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87 int width = Math.min(s.x, layer.width);
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88 int height = Math.min(s.y, layer.height);
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89 PaletteData layerPaletteData = layer.palette;
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90 if (layer.getTransparencyType()==SWT.TRANSPARENCY_MASK ||
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91 layer.getTransparencyType()==SWT.TRANSPARENCY_PIXEL)
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93 ImageData mask = layer.getTransparencyMask();
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94 for (int y=0; y<height; y++)
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95 for (int x=0; x<width; x++)
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96 if (mask.getPixel(x, y)==1) {
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97 RGB rgb = layerPaletteData.getRGB(layer.getPixel(x, y));
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98 id.setPixel(x, y, palette.getPixel(rgb));
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99 id.setAlpha(x, y, 255);
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102 for (int y=0; y<height; y++)
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103 for (int x=0; x<width; x++)
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105 int layerAlpha = layer.getAlpha(x, y);
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106 int origAlpha = id.getAlpha(x,y);
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107 RGB layerRGB = layerPaletteData.getRGB(layer.getPixel(x, y));
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108 RGB origRGB = palette.getRGB(id.getPixel(x, y));
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109 int newR = ( ( origRGB.red * (255-layerAlpha) ) +
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110 ( layerRGB.red * (layerAlpha) ) ) / 255;
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111 int newG = ( ( origRGB.green * (255-layerAlpha) ) +
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112 ( layerRGB.green * (layerAlpha) ) ) / 255;
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113 int newB = ( ( origRGB.blue * (255-layerAlpha) ) +
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114 ( layerRGB.blue * (layerAlpha) ) ) / 255;
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115 int newAlpha = origAlpha + ((255-origAlpha)*layerAlpha)/255;
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116 id.setPixel(x, y, palette.getPixel(new RGB(newR, newG, newB)));
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117 id.setAlpha(x, y, newAlpha);
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122 //ImageData orig = ImageCache.getInstance().getImage(desc).getImageData();
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127 private Point _countSize()
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131 for (ImageDescriptor id : ids.toArray())
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133 Image i = cache.getImage(id);
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134 int w = i.getImageData().width;
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135 if (w>width) width = w;
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136 int h = i.getImageData().height;
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137 if (h>height) height = h;
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139 return new Point(width, height);
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142 protected Point getSize() {
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143 if (size==null) size = _countSize();
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148 public boolean equals(Object obj) {
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149 if (!(obj instanceof CompositionImageDescriptor))
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151 CompositionImageDescriptor other = (CompositionImageDescriptor) obj;
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152 return other.ids.equals(ids);
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156 public int hashCode() {
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157 return ids.hashCode();
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