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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12 package org.simantics.g2d.image.impl;
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14 import java.awt.geom.AffineTransform;
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15 import java.util.EnumSet;
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17 import org.simantics.g2d.image.Image;
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18 import org.simantics.g2d.image.ImageUtils;
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19 import org.simantics.scenegraph.Node;
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20 import org.simantics.scenegraph.g2d.G2DParentNode;
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23 * System-memory stored raster of an image.
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24 * Suitable for vector based images.
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26 * This implementation determines the required raster quality from the
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27 * given graphics2D context. If the buffered raster is not good enough quality,
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28 * the image will be re-rendered. If the buffer to be rendered is larger than
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29 * maxDimension * maxDimension, original image will be used instead.
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31 * Disposing buffer does not dipose the original image.
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33 * @See {@link ImageUtils}
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34 * @author Toni Kalajainen
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36 public class BufferedImage extends ImageProxy implements Image {
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38 public static final double MAX_DIMENSION = 800;
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40 java.awt.image.BufferedImage raster;
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41 double rasterResolution = 1.0;
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42 double maxDimension;
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43 EnumSet<Feature> caps;
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45 public BufferedImage(Image source)
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47 this(source, MAX_DIMENSION);
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50 public BufferedImage(Image source, double maxDimension)
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53 this.maxDimension = maxDimension;
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54 boolean vector = source.getFeatures().contains(Feature.Vector);
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55 boolean vola = source.getFeatures().contains(Feature.Volatile);
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57 source.addImageListener(new ImageListener() {
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59 public void onContentChangedNotification(Image image) {
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62 this.caps = EnumSet.of(Feature.Volatile);
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64 this.caps = EnumSet.noneOf(Feature.class);
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68 private double requiredResolution(AffineTransform af)
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70 double reso = Math.max(af.getScaleX(), af.getScaleY());
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71 // Add some extra information for rotations & anti-aliasing
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76 private synchronized void releaseRaster()
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82 public synchronized Node init(G2DParentNode parent) {
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84 // Graphics2D g = gc.getGraphics2D();
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85 // // Quality rendering requested, do not render from cache
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86 // if (g.getRenderingHint(RenderingHints.KEY_RENDERING) == RenderingHints.VALUE_RENDER_QUALITY)
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88 // source.paint(gc);
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91 // Rectangle2D bounds = getBounds();
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93 // double requiredResolution = requiredResolution(g.getTransform());
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94 // double wid = bounds.getWidth();
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95 // double hei = bounds.getHeight();
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96 // wid *= requiredResolution * 1.05;
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97 // hei *= requiredResolution * 1.05;
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99 // // too detailed, render with the original image
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100 // if (wid*hei > maxDimension*maxDimension)
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102 // source.paint(gc);
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106 // if (raster!=null && requiredResolution>rasterResolution )
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108 // releaseRaster();
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110 // if (raster==null) {
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112 // rasterResolution = requiredResolution;
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114 // raster = new java.awt.image.BufferedImage(
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117 // java.awt.image.BufferedImage.TYPE_INT_ARGB);
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118 // Graphics2D target = raster.createGraphics();
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119 // target.setBackground(new Color(255,255,255,0));
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120 // target.clearRect(0, 0, raster.getWidth(), raster.getHeight());
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121 // target.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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122 // target.scale(rasterResolution, rasterResolution);
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123 // target.translate(-bounds.getX(), -bounds.getY());
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125 // QualityHints.HIGH_QUALITY_HINTS.setQuality(target);
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126 // target.setRenderingHint( RenderingHintsKeyExt.KEY_BUFFERED_IMAGE, new WeakReference<java.awt.image.BufferedImage>(raster) );
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128 // source.paint(new GraphicsContextImpl(new Rectangle2D.Double(0,0, raster.getWidth(), raster.getHeight()), null) );
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129 // target.dispose();
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132 // AffineTransform af = g.getTransform();
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134 // g.translate(bounds.getX(), bounds.getY());
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135 // g.scale(1/rasterResolution, 1/rasterResolution);
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136 // g.drawImage(raster, 0, 0, null);
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137 // g.setColor(Color.BLACK);
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139 // g.setTransform(af);
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144 public EnumSet<Feature> getFeatures() {
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