1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.scenegraph.utils;
14 import java.awt.Color;
15 import java.awt.Graphics2D;
16 import java.awt.Point;
17 import java.awt.RenderingHints;
18 import java.awt.Transparency;
19 import java.awt.geom.AffineTransform;
20 import java.awt.geom.Rectangle2D;
21 import java.awt.image.VolatileImage;
23 import com.kitfox.svg.SVGDiagram;
24 import com.kitfox.svg.SVGException;
29 public class VRamBufferedImage extends BufferedImage {
31 VolatileImage buffer = null;
32 AffineTransform previousTransform = null;
37 * @param referenceSize a reference size for the rasterized images or
38 * <code>null</code> to not specify one in which case a default
41 public VRamBufferedImage(SVGDiagram original, Rectangle2D imageBounds, Point referenceSize) {
42 super(original, imageBounds, referenceSize);
46 public synchronized void releaseRaster() {
54 public void paint(Graphics2D g) {
57 if(previousTransform == null || previousTransform.getScaleX() != g.getTransform().getScaleX() || previousTransform.getScaleY() != g.getTransform().getScaleY()) {
59 previousTransform = (AffineTransform)g.getTransform().clone();
60 int w = (int)((imageBounds.getWidth()+margin*2) * previousTransform.getScaleX());
61 int h = (int)((imageBounds.getHeight()+margin*2) * previousTransform.getScaleY());
64 buffer = g.getDeviceConfiguration().createCompatibleVolatileImage(w, h, Transparency.TRANSLUCENT);
66 // FIXME: render in a "while loop" specified in VolatileImage, this is not guaranteed to work.
68 Graphics2D b2g = (Graphics2D)buffer.getGraphics();
70 b2g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
71 b2g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
72 b2g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
74 b2g.setBackground(new Color(255,255,255,0));
75 b2g.clearRect(0, 0, w, h);
76 b2g.translate(margin, margin);
77 b2g.scale(previousTransform.getScaleX(), previousTransform.getScaleY());
78 b2g.translate(-imageBounds.getMinX(), -imageBounds.getMinY());
80 } catch (SVGException e) {
81 // TODO Auto-generated catch block
86 g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
87 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
88 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
89 g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
91 AffineTransform at = (AffineTransform)g.getTransform().clone();
93 g.translate(imageBounds.getMinX(), imageBounds.getMinY());
94 g.scale(1/previousTransform.getScaleX(), 1/previousTransform.getScaleY());
95 g.translate(-margin, -margin);
97 g.drawImage(buffer, 0, 0, null);