X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.g2d%2Fsrc%2Forg%2Fsimantics%2Fg2d%2Fimage%2Fimpl%2FMipMapBufferedImage.java;fp=bundles%2Forg.simantics.g2d%2Fsrc%2Forg%2Fsimantics%2Fg2d%2Fimage%2Fimpl%2FMipMapBufferedImage.java;h=1436dc2f00fd1f86e7ed6b840f0d7ffb8b1dd162;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/MipMapBufferedImage.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/MipMapBufferedImage.java
new file mode 100644
index 000000000..1436dc2f0
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/image/impl/MipMapBufferedImage.java
@@ -0,0 +1,279 @@
+/*******************************************************************************
+ * 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.Color;
+import java.awt.Graphics2D;
+import java.awt.Shape;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Rectangle2D;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.EnumSet;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.simantics.g2d.image.Image;
+import org.simantics.scenegraph.Node;
+import org.simantics.scenegraph.g2d.G2DParentNode;
+import org.simantics.scenegraph.utils.QualityHints;
+
+/**
+ * Video-ram cache suitable for rasterized PaintableSymbols scalable vector graphics.
+ * <p>
+ * This implementation rasterizes the same symbol from different mip map levels.
+ * 
+ * @see VRamBufferedImage
+ * @author Toni Kalajainen
+ */
+public class MipMapBufferedImage extends ImageProxy implements Image {
+
+    /** Extra margin to the bounds reported by batik*/
+    public static final double MARGIN_PERCENT = 3;
+
+    public static final double MAX_DIMENSION = 800;
+    public static final double MIN_DIMENSION = 4;
+
+    Shape outline;
+
+    double [] resolutions;
+    Map<Double, Raster> rasters = new HashMap<Double, Raster>();
+    double minResolution, maxResolution;
+    EnumSet<Feature> caps;
+
+    public MipMapBufferedImage(Image original)
+    {
+        super(original);
+        this.source = original;
+
+        // Init rasters - they are built on-demand
+        double maxResolution = maxResolution();
+        double minResolution = minResolution();
+        double resolution = maxResolution;
+        List<Double> resolutions = new ArrayList<Double>();
+        while (resolution>minResolution)
+        {
+            Raster r = new Raster(resolution);
+            rasters.put(resolution, r);
+            resolutions.add(resolution);
+            resolution /= 2;
+        }
+
+        // arraylist -> array
+        this.resolutions = new double[resolutions.size()];
+        for (int i=0; i<resolutions.size(); i++)
+            this.resolutions[i] = resolutions.get(resolutions.size()-1-i);
+        this.minResolution = this.resolutions[0];
+        this.maxResolution = this.resolutions[this.resolutions.length-1];
+
+        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 maxResolution()
+    {
+        Rectangle2D bounds = source.getBounds();
+        double wid = bounds.getWidth();
+        double hei = bounds.getHeight();
+        return MAX_DIMENSION/Math.sqrt(wid*hei);
+    }
+
+    private double minResolution()
+    {
+        Rectangle2D bounds = source.getBounds();
+        double wid = bounds.getWidth();
+        double hei = bounds.getHeight();
+        return MIN_DIMENSION/Math.sqrt(wid*hei);
+    }
+
+    private double requiredResolution(AffineTransform at)
+    {
+        double m00 = at.getScaleX();
+        double m11 = at.getScaleY();
+        double m10 = at.getShearY();
+        double m01 = at.getShearX();
+        // Project unit vector to canvas
+        double sx = Math.sqrt( m00*m00+m10*m10 );
+        double sy = Math.sqrt( m01*m01+m11*m11 );
+        return Math.sqrt(sx*sx+sy*sy);
+    }
+
+    private double findClosestResolution(double resolution)
+    {
+        int index = Arrays.binarySearch(resolutions, resolution);
+        if (index>=0) return resolutions[index];
+        index  = -(index+1);
+
+        if (index>=resolutions.length) index = resolutions.length-1;
+        if (index<0) index = 0;
+        return resolutions[index];
+    }
+
+    @Override
+    public Node init(G2DParentNode parent) {
+        return null;
+//		Graphics2D g = gc.getGraphics2D();
+//		// Quality rendering requested, do not render from cache
+//		//QualityHints.HIGH_QUALITY_HINTS.setQuality(g);
+//		if (g.getRenderingHint(RenderingHints.KEY_RENDERING) == RenderingHints.VALUE_RENDER_QUALITY)
+//		{
+//			source.paint(gc);
+//			return;
+//		}
+//
+//		double requiredResolution = requiredResolution(g.getTransform());
+//		if (requiredResolution > maxResolution)
+//		{
+//			g = gc.createClone();
+//			g.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_SPEED);
+//			g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
+//			g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+//			g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
+//			g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);
+//			g.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);
+//			gc = new GraphicsContextImpl(g, gc.getBounds(), gc.getNode());
+//			source.paint(gc);
+//			return;
+//		}
+//
+//		double closestResolution = findClosestResolution(requiredResolution);
+//
+//		Raster raster = rasters.get(closestResolution);
+//
+//		Object origInterpolationHint = g.getRenderingHint(RenderingHints.KEY_INTERPOLATION);
+//		if (origInterpolationHint==null)
+//			origInterpolationHint = RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR;
+//		g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);
+//		try {
+//			raster.paint( gc );
+//		} finally {
+//			g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, origInterpolationHint);
+//		}
+    }
+
+    public Image getOriginalPaintableSymbol()
+    {
+        return source;
+    }
+
+    synchronized void releaseRaster() {
+        for (Raster r : rasters.values())
+            r.image = null;
+
+    }
+
+    @Override
+    protected void notifyChanged() {
+        releaseRaster();
+        super.notifyChanged();
+    }
+
+    class Raster implements Comparable<Raster> {
+        java.awt.image.BufferedImage image;
+        double resolution;
+//		int widMargin, heiMargin;
+        int wid, hei;
+
+        Raster(double resolution) {
+            Rectangle2D bounds = source.getBounds();
+            this.resolution = resolution;
+            double wid = bounds.getWidth();
+            double hei = bounds.getHeight();
+            this.wid = (int) (wid * resolution);
+            this.hei = (int) (hei * resolution);
+//			widMargin = (int) (wid * resolution * (MARGIN_PERCENT/100)) +1;
+//			heiMargin = (int) (hei * resolution * (MARGIN_PERCENT/100)) +1;
+        }
+
+        synchronized java.awt.image.BufferedImage getOrCreate()
+        {
+            if (image!=null) return image;
+            Rectangle2D bounds = source.getBounds();
+            image = new java.awt.image.BufferedImage(
+                    (wid+0*2+1),
+                    (hei+0*2+1),
+                    java.awt.image.BufferedImage.TYPE_INT_ARGB);
+
+            Graphics2D target = image.createGraphics();
+            target.setBackground(new Color(255,255,255,0));
+            target.clearRect(0, 0, image.getWidth(), image.getHeight());
+            QualityHints.HIGH_QUALITY_HINTS.setQuality(target);
+//			target.setRenderingHint(RenderingHintsKeyExt.KEY_BUFFERED_IMAGE, new WeakReference<java.awt.image.BufferedImage>(image));
+//			target.translate(widMargin, heiMargin);
+            target.scale(resolution, resolution);
+            target.translate(-bounds.getMinX(), -bounds.getMinY());
+            source.init(null);
+//					new GraphicsContextImpl(new Rectangle2D.Double(0,0, image.getWidth(), image.getHeight()), null)
+//					);
+            target.dispose();
+
+            return image;
+        }
+
+//        public void paint(GraphicsContext gc) {
+//			Rectangle2D bounds = source.getBounds();
+//			java.awt.image.BufferedImage image = getOrCreate();
+//			if (image==null)
+//			{
+//				source.paint(gc);
+//				return;
+//			}
+//			Graphics2D g = gc.getGraphics2D();
+//			AffineTransform af = g.getTransform();
+//			Object rh = g.getRenderingHint(RenderingHints.KEY_INTERPOLATION);
+//			try {
+//				/// Bicubic interpolation is very slow with opengl pipeline
+//				if (rh == RenderingHints.VALUE_INTERPOLATION_BICUBIC)
+//				g.setRenderingHint(RenderingHints.KEY_INTERPOLATION,
+//						RenderingHints.VALUE_INTERPOLATION_BILINEAR);
+//				g.translate(bounds.getMinX(), bounds.getMinY());
+//				g.scale(1/resolution, 1/resolution);
+////				g.translate(-widMargin, -heiMargin);
+//				g.drawImage(image, 0, 0, null);
+//			} finally {
+//				g.setTransform(af);
+//				g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, rh);
+//			}
+//        }
+
+        @Override
+        public int compareTo(Raster other) {
+            if (other.resolution<resolution)
+                return -1;
+            if (other.resolution>resolution)
+                return 1;
+            return 0;
+        }
+    }
+
+    @Override
+    public EnumSet<Feature> getFeatures() {
+        return caps;
+    }
+
+    public Image getSource() {
+        return source;
+    }
+
+}
+