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.geom.AffineTransform;
19 import java.awt.geom.Rectangle2D;
21 import com.kitfox.svg.SVGDiagram;
22 import com.kitfox.svg.SVGException;
27 public class BufferedImage {
29 Rectangle2D imageBounds;
32 java.awt.image.BufferedImage buffer = null;
33 AffineTransform previousTransform = null;
38 * @param referenceSize a reference size for the rasterized images or
39 * <code>null</code> to not specify one in which case a default
42 public BufferedImage(SVGDiagram original, Rectangle2D imageBounds, Point referenceSize) {
43 this.source = original;
44 this.imageBounds = imageBounds;
45 this.referenceSize = referenceSize;
48 public BufferedImage(SVGDiagram original) {
49 this.source = original;
50 this.imageBounds = original.getViewRect();
51 this.referenceSize = null;
54 public java.awt.image.BufferedImage getBuffer() {
59 public void finalize() throws Throwable {
60 //System.out.println("BufferedImage.finalize()");
65 public synchronized void releaseRaster() {
73 public void paintToBuffer(AffineTransform transform, float margin) throws SVGException {
75 int w = (int)((imageBounds.getWidth()+margin*2) * transform.getScaleX());
76 int h = (int)((imageBounds.getHeight()+margin*2) * transform.getScaleY());
78 if(h < 1) h = 1; // FIXME
80 buffer = new java.awt.image.BufferedImage(w, h, java.awt.image.BufferedImage.TYPE_INT_ARGB);
82 Graphics2D b2g = (Graphics2D)buffer.getGraphics();
84 b2g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
85 b2g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
86 b2g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
88 b2g.setBackground(Color.WHITE);
89 b2g.clearRect(0, 0, w, h);
90 b2g.translate(margin, margin);
91 b2g.scale(transform.getScaleX(), transform.getScaleY());
92 b2g.translate(-imageBounds.getMinX(), -imageBounds.getMinY());
97 public void paint(Graphics2D g) {
100 if(previousTransform == null || previousTransform.getScaleX() != g.getTransform().getScaleX() || previousTransform.getScaleY() != g.getTransform().getScaleY()) {
101 // setupSourceRender(g);
103 previousTransform = (AffineTransform)g.getTransform().clone();
104 paintToBuffer(previousTransform, margin);
105 } catch (SVGException e) {
106 // TODO Auto-generated catch block
111 g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
112 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
113 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
114 g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
116 AffineTransform at = (AffineTransform)g.getTransform().clone();
118 g.translate(imageBounds.getMinX(), imageBounds.getMinY());
119 g.scale(1/previousTransform.getScaleX(), 1/previousTransform.getScaleY());
120 g.translate(-margin, -margin);
122 g.drawImage(buffer, 0, 0, null);