1 /* RenderableImageOp.java -- 2 Copyright (C) 2002 Free Software Foundation, Inc. 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package java.awt.image.renderable; 40 41 import java.awt.RenderingHints; 42 import java.awt.geom.AffineTransform; 43 import java.awt.image.RenderedImage; 44 import java.util.Vector; 45 46 public class RenderableImageOp implements RenderableImage 47 { 48 private final ContextualRenderedImageFactory crif; 49 private ParameterBlock block; 50 RenderableImageOp(ContextualRenderedImageFactory crif, ParameterBlock block)51 public RenderableImageOp(ContextualRenderedImageFactory crif, 52 ParameterBlock block) 53 { 54 this.crif = crif; 55 this.block = (ParameterBlock) block.clone(); 56 } 57 getSources()58 public Vector<RenderableImage> getSources() 59 { 60 if (block.sources == null) 61 return null; 62 int size = block.sources.size(); 63 Vector v = new Vector(); 64 for (int i = 0; i < size; i++) 65 { 66 Object o = block.sources.get(i); 67 if (o instanceof RenderableImage) 68 v.add(o); 69 } 70 return v; 71 } 72 getProperty(String name)73 public Object getProperty(String name) 74 { 75 return crif.getProperty(block, name); 76 } 77 getPropertyNames()78 public String[] getPropertyNames() 79 { 80 return crif.getPropertyNames(); 81 } 82 isDynamic()83 public boolean isDynamic() 84 { 85 return crif.isDynamic(); 86 } 87 getWidth()88 public float getWidth() 89 { 90 return (float) crif.getBounds2D(block).getWidth(); 91 } 92 getHeight()93 public float getHeight() 94 { 95 return (float) crif.getBounds2D(block).getHeight(); 96 } 97 getMinX()98 public float getMinX() 99 { 100 return (float) crif.getBounds2D(block).getX(); 101 } 102 getMinY()103 public float getMinY() 104 { 105 return (float) crif.getBounds2D(block).getY(); 106 } 107 setParameterBlock(ParameterBlock block)108 public ParameterBlock setParameterBlock(ParameterBlock block) 109 { 110 ParameterBlock result = this.block; 111 this.block = (ParameterBlock) block.clone(); 112 return result; 113 } 114 getParameterBlock()115 public ParameterBlock getParameterBlock() 116 { 117 return block; 118 } 119 createScaledRendering(int w, int h, RenderingHints hints)120 public RenderedImage createScaledRendering(int w, int h, 121 RenderingHints hints) 122 { 123 if (w == 0) 124 if (h == 0) 125 throw new IllegalArgumentException(); 126 else 127 w = Math.round(h * getWidth() / getHeight()); 128 if (h == 0) 129 h = Math.round(w * getHeight() / getWidth()); 130 AffineTransform xform = AffineTransform.getScaleInstance(w * getWidth(), 131 h * getHeight()); 132 return createRendering(new RenderContext(xform, hints)); 133 } 134 createDefaultRendering()135 public RenderedImage createDefaultRendering() 136 { 137 return createRendering(new RenderContext(new AffineTransform())); 138 } 139 createRendering(RenderContext context)140 public RenderedImage createRendering(RenderContext context) 141 { 142 ParameterBlock copy = (ParameterBlock) block.clone(); 143 int i = block.sources.size(); 144 while (--i >= 0) 145 { 146 Object o = block.sources.get(i); 147 if (o instanceof RenderableImage) 148 { 149 RenderableImage ri = (RenderableImage) o; 150 RenderContext rc = crif.mapRenderContext(i, context, block, ri); 151 copy.sources.set(i, ri.createRendering(rc)); 152 } 153 } 154 // Now copy.sources should be only RenderedImages. 155 return crif.create(context, copy); 156 } 157 } // class RenderableImageOp 158