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.scenegraph.utils;
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14 import java.awt.Color;
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15 import java.awt.Graphics2D;
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16 import java.awt.Point;
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17 import java.awt.RenderingHints;
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18 import java.awt.Transparency;
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19 import java.awt.geom.AffineTransform;
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20 import java.awt.geom.Rectangle2D;
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21 import java.awt.image.VolatileImage;
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23 import com.kitfox.svg.SVGDiagram;
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24 import com.kitfox.svg.SVGException;
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29 public class VRamBufferedImage extends BufferedImage {
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31 VolatileImage buffer = null;
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32 AffineTransform previousTransform = null;
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36 * @param imageBounds
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37 * @param referenceSize a reference size for the rasterized images or
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38 * <code>null</code> to not specify one in which case a default
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39 * resolution is used
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41 public VRamBufferedImage(SVGDiagram original, Rectangle2D imageBounds, Point referenceSize) {
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42 super(original, imageBounds, referenceSize);
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46 public synchronized void releaseRaster() {
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47 if (buffer != null) {
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54 public void paint(Graphics2D g) {
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57 if(previousTransform == null || previousTransform.getScaleX() != g.getTransform().getScaleX() || previousTransform.getScaleY() != g.getTransform().getScaleY()) {
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59 previousTransform = (AffineTransform)g.getTransform().clone();
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60 int w = (int)((imageBounds.getWidth()+margin*2) * previousTransform.getScaleX());
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61 int h = (int)((imageBounds.getHeight()+margin*2) * previousTransform.getScaleY());
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64 buffer = g.getDeviceConfiguration().createCompatibleVolatileImage(w, h, Transparency.TRANSLUCENT);
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66 // FIXME: render in a "while loop" specified in VolatileImage, this is not guaranteed to work.
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68 Graphics2D b2g = (Graphics2D)buffer.getGraphics();
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70 b2g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
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71 b2g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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72 b2g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
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74 b2g.setBackground(new Color(255,255,255,0));
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75 b2g.clearRect(0, 0, w, h);
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76 b2g.translate(margin, margin);
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77 b2g.scale(previousTransform.getScaleX(), previousTransform.getScaleY());
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78 b2g.translate(-imageBounds.getMinX(), -imageBounds.getMinY());
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80 } catch (SVGException e) {
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81 // TODO Auto-generated catch block
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82 e.printStackTrace();
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86 g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
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87 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
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88 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
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89 g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
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91 AffineTransform at = (AffineTransform)g.getTransform().clone();
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93 g.translate(imageBounds.getMinX(), imageBounds.getMinY());
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94 g.scale(1/previousTransform.getScaleX(), 1/previousTransform.getScaleY());
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95 g.translate(-margin, -margin);
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97 g.drawImage(buffer, 0, 0, null);
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