bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/MipMapVRamBufferedImage.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.scenegraph.utils;\r
  13 \r
  14 import java.awt.Color;\r
  15 import java.awt.Graphics2D;\r
  16 import java.awt.GraphicsConfiguration;\r
  17 import java.awt.Point;\r
  18 import java.awt.RenderingHints;\r
  19 import java.awt.geom.AffineTransform;\r
  20 import java.awt.geom.Rectangle2D;\r
  21 import java.awt.image.VolatileImage;\r
  22 import java.util.concurrent.atomic.AtomicInteger;\r
  23 \r
  24 import com.kitfox.svg.SVGDiagram;\r
  25 \r
  26 /**\r
  27  * Video-ram cache suitable for rasterized PaintableSymbols scalable vector graphics.\r
  28  * <p>\r
  29  * This implementation rasterizes the same symbol from different mip map levels.\r
  30  * \r
  31  * @see VRamImage\r
  32  * @author Toni Kalajainen\r
  33  */\r
  34 public class MipMapVRamBufferedImage extends MipMapBufferedImage {\r
  35 \r
  36     /**\r
  37      * @param original\r
  38      * @param imageBounds\r
  39      * @param referenceSize a reference size for the rasterized images or\r
  40      *        <code>null</code> to not specify one in which case a default\r
  41      *        resolution is used\r
  42      * @param gc\r
  43      */\r
  44     public MipMapVRamBufferedImage(SVGDiagram original, Rectangle2D imageBounds, Point referenceSize)\r
  45     {\r
  46         super(original, imageBounds, referenceSize);\r
  47     }\r
  48 \r
  49     @Override\r
  50     protected IRaster createRaster(double resolution) {\r
  51         return new VolatileRaster(resolution);\r
  52     }\r
  53 \r
  54     @Override\r
  55     protected double getRasterRenderingThresholdResolution() {\r
  56         return maxResolution*1.5;\r
  57     }\r
  58 \r
  59     @Override\r
  60     protected void setupSourceRender(Graphics2D g2d) {\r
  61 //        g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_SPEED);\r
  62 //        g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);\r
  63 //        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);\r
  64 //        g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);\r
  65 //        g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);\r
  66 //        g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);\r
  67 \r
  68         g2d.setRenderingHint(RenderingHints.KEY_ALPHA_INTERPOLATION, RenderingHints.VALUE_ALPHA_INTERPOLATION_SPEED);\r
  69         g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);\r
  70         g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);\r
  71         g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);\r
  72         g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);\r
  73         g2d.setRenderingHint(RenderingHints.KEY_DITHERING, RenderingHints.VALUE_DITHER_DISABLE);\r
  74     }\r
  75 \r
  76     class VolatileRaster extends Raster {\r
  77         VolatileImageProvider imageProvider;\r
  78         int widMargin, heiMargin;\r
  79         int wid, hei;\r
  80         AtomicInteger validateResult = new AtomicInteger(VolatileImage.IMAGE_OK);\r
  81 \r
  82         public VolatileRaster(double resolution) {\r
  83             super(resolution);\r
  84             double wid = imageBounds.getWidth();\r
  85             double hei = imageBounds.getHeight();\r
  86             this.wid = (int) (wid * resolution);\r
  87             this.hei = (int) (hei * resolution);\r
  88             widMargin = (int) (wid * resolution * (MARGIN_PERCENT/100)) +1;\r
  89             heiMargin = (int) (hei * resolution * (MARGIN_PERCENT/100)) +1;\r
  90             imageProvider = VolatileImageCache.getInstance().create(this.wid+widMargin*2, this.hei+heiMargin*2);\r
  91             //System.out.println("VolatileRaster(" + resolution + "): " + this.wid + " x " + this.hei);\r
  92         }\r
  93 \r
  94         /**\r
  95          * @param image\r
  96          * @return\r
  97          */\r
  98         private VolatileImage sourceRender(VolatileImage image) {\r
  99             Graphics2D target = image.createGraphics();\r
 100             target.setBackground(new Color(255,255,255,0));\r
 101             target.clearRect(0, 0, image.getWidth(), image.getHeight());\r
 102 \r
 103             target.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);\r
 104             target.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);\r
 105             target.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);\r
 106             target.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BICUBIC);\r
 107 \r
 108             target.translate(widMargin, heiMargin);\r
 109             target.scale(resolution, resolution);\r
 110             target.translate(-imageBounds.getMinX(), -imageBounds.getMinY());\r
 111             try {\r
 112                 source.render(target);\r
 113             } catch (Exception e) {\r
 114                 e.printStackTrace();\r
 115                 target.dispose();\r
 116                 image = null;\r
 117                 return null;\r
 118             }\r
 119             target.dispose();\r
 120             //JAI.create("filestore", image.getSnapshot(), "d:/test" + (koss++) + ".png", "png");\r
 121             return image;\r
 122         }\r
 123 \r
 124         synchronized VolatileImage restore(GraphicsConfiguration gc2) {\r
 125             //System.out.println("restoring provider " + imageProvider);\r
 126             VolatileImage image = imageProvider.get(gc2, this.validateResult);\r
 127 \r
 128             // If a new image was created, we always need to render from source.\r
 129             int validateResult = this.validateResult.get();\r
 130             //System.out.println("got VolatileImage " + image + " (validation result=" + validated + ")");\r
 131 \r
 132             // Couldn't get image? This is not supposed to happen but happened anyway.\r
 133             if (image == null) {\r
 134                 System.err.println("BUG: VolatileImageProvider.get returned null!");\r
 135                 return null;\r
 136             }\r
 137 \r
 138 //            if (validateResult != VolatileImage.IMAGE_OK) {\r
 139 //                System.out.println("NEED SOURCE RENDER FOR VOLATILE IMAGE PROVIDER " + imageProvider + " - " + image);\r
 140 //            }\r
 141 \r
 142             boolean contentsLost = validateResult != VolatileImage.IMAGE_OK || image.contentsLost();\r
 143             return contentsLost ? sourceRender(image) : image;\r
 144             //return contentsLost ? sourceRender(image) : sourceRender(image);\r
 145         }\r
 146 \r
 147         public void paint(Graphics2D g) {\r
 148             VolatileImage image = restore(g.getDeviceConfiguration());\r
 149             if (image==null)\r
 150             {\r
 151                 g.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_SPEED);\r
 152                 g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);\r
 153                 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);\r
 154                 g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);\r
 155 \r
 156                 try {\r
 157                     source.render(g);\r
 158                 } catch (Exception e) {\r
 159                     // TODO Auto-generated catch block\r
 160                     // NOTE: Catching Exception instead of SVGException due to an\r
 161                     // NPE when encountering invalid color SVG definitions (e.g.\r
 162                     // rgb(256,-1,0))\r
 163                     e.printStackTrace();\r
 164                 }\r
 165                 return;\r
 166             }\r
 167             AffineTransform af = g.getTransform();\r
 168             Object rh = g.getRenderingHint(RenderingHints.KEY_INTERPOLATION);\r
 169             try {\r
 170                 /// Bicubic interpolation is very slow with opengl pipeline\r
 171                 if (rh == RenderingHints.VALUE_INTERPOLATION_BICUBIC)\r
 172                     g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);\r
 173                 g.translate(imageBounds.getMinX(), imageBounds.getMinY());\r
 174                 g.scale(1/resolution, 1/resolution);\r
 175                 g.translate(-widMargin, -heiMargin);\r
 176                 g.drawImage(image, 0, 0, null);\r
 177             } finally {\r
 178                 g.setTransform(af);\r
 179                 g.setRenderingHint(RenderingHints.KEY_INTERPOLATION, rh);\r
 180             }\r
 181         }\r
 182 \r
 183         public void release() {\r
 184             imageProvider.dispose();\r
 185         }\r
 186     }\r
 187 \r
 188     //static long koss = 0;\r
 189 \r
 190     /*\r
 191     @Override\r
 192     public int hashCode() {\r
 193         return gc.hashCode() ^original.hashCode();\r
 194     }\r
 195 \r
 196     @Override\r
 197     public boolean equals(Object obj) {\r
 198         if (!(obj instanceof VRamBufferedImage)) return false;\r
 199         VRamBufferedImage o = (VRamBufferedImage) obj;\r
 200         return o.gc == gc && o.original.equals(original);\r
 201     }\r
 202      */\r
 203 \r
 204 }\r