/*******************************************************************************
* Copyright (c) 2007, 2010 Association for Decentralized Information Management
* in Industry THTH ry.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* VTT Technical Research Centre of Finland - initial API and implementation
*******************************************************************************/
package org.simantics.g2d.image.impl;
import java.awt.geom.AffineTransform;
import java.util.EnumSet;
import org.simantics.g2d.image.Image;
import org.simantics.g2d.image.ImageUtils;
import org.simantics.scenegraph.Node;
import org.simantics.scenegraph.g2d.G2DParentNode;
/**
* System-memory stored raster of an image.
* Suitable for vector based images.
*
* This implementation determines the required raster quality from the
* given graphics2D context. If the buffered raster is not good enough quality,
* the image will be re-rendered. If the buffer to be rendered is larger than
* maxDimension * maxDimension, original image will be used instead.
*
* Disposing buffer does not dipose the original image.
*
* @See {@link ImageUtils}
* @author Toni Kalajainen
*/
public class BufferedImage extends ImageProxy implements Image {
public static final double MAX_DIMENSION = 800;
java.awt.image.BufferedImage raster;
double rasterResolution = 1.0;
double maxDimension;
EnumSet caps;
public BufferedImage(Image source)
{
this(source, MAX_DIMENSION);
}
public BufferedImage(Image source, double maxDimension)
{
super(source);
this.maxDimension = maxDimension;
boolean vector = source.getFeatures().contains(Feature.Vector);
boolean vola = source.getFeatures().contains(Feature.Volatile);
if (vola) {
source.addImageListener(new ImageListener() {
@Override
public void onContentChangedNotification(Image image) {
releaseRaster();
}});
this.caps = EnumSet.of(Feature.Volatile);
} else {
this.caps = EnumSet.noneOf(Feature.class);
}
}
private double requiredResolution(AffineTransform af)
{
double reso = Math.max(af.getScaleX(), af.getScaleY());
// Add some extra information for rotations & anti-aliasing
reso *= 1.3;
return reso;
}
private synchronized void releaseRaster()
{
raster = null;
}
@Override
public synchronized Node init(G2DParentNode parent) {
return null;
// Graphics2D g = gc.getGraphics2D();
// // Quality rendering requested, do not render from cache
// if (g.getRenderingHint(RenderingHints.KEY_RENDERING) == RenderingHints.VALUE_RENDER_QUALITY)
// {
// source.paint(gc);
// return;
// }
// Rectangle2D bounds = getBounds();
//
// double requiredResolution = requiredResolution(g.getTransform());
// double wid = bounds.getWidth();
// double hei = bounds.getHeight();
// wid *= requiredResolution * 1.05;
// hei *= requiredResolution * 1.05;
//
// // too detailed, render with the original image
// if (wid*hei > maxDimension*maxDimension)
// {
// source.paint(gc);
// return;
// }
//
// if (raster!=null && requiredResolution>rasterResolution )
// {
// releaseRaster();
// }
// if (raster==null) {
//
// rasterResolution = requiredResolution;
//
// raster = new java.awt.image.BufferedImage(
// (int)(wid+1),
// (int)(hei+1),
// java.awt.image.BufferedImage.TYPE_INT_ARGB);
// Graphics2D target = raster.createGraphics();
// target.setBackground(new Color(255,255,255,0));
// target.clearRect(0, 0, raster.getWidth(), raster.getHeight());
// target.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// target.scale(rasterResolution, rasterResolution);
// target.translate(-bounds.getX(), -bounds.getY());
//
// QualityHints.HIGH_QUALITY_HINTS.setQuality(target);
// target.setRenderingHint( RenderingHintsKeyExt.KEY_BUFFERED_IMAGE, new WeakReference(raster) );
//
// source.paint(new GraphicsContextImpl(new Rectangle2D.Double(0,0, raster.getWidth(), raster.getHeight()), null) );
// target.dispose();
// }
//
// AffineTransform af = g.getTransform();
// try {
// g.translate(bounds.getX(), bounds.getY());
// g.scale(1/rasterResolution, 1/rasterResolution);
// g.drawImage(raster, 0, 0, null);
// g.setColor(Color.BLACK);
// } finally {
// g.setTransform(af);
// }
}
@Override
public EnumSet getFeatures() {
return caps;
}
}