| 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 | |
| 51 | public RenderableImageOp(ContextualRenderedImageFactory crif, |
| 52 | ParameterBlock block) |
| 53 | { |
| 54 | this.crif = crif; |
| 55 | this.block = (ParameterBlock) block.clone(); |
| 56 | } |
| 57 | |
| 58 | public Vector 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 | |
| 73 | public Object getProperty(String name) |
| 74 | { |
| 75 | return crif.getProperty(block, name); |
| 76 | } |
| 77 | |
| 78 | public String[] getPropertyNames() |
| 79 | { |
| 80 | return crif.getPropertyNames(); |
| 81 | } |
| 82 | |
| 83 | public boolean isDynamic() |
| 84 | { |
| 85 | return crif.isDynamic(); |
| 86 | } |
| 87 | |
| 88 | public float getWidth() |
| 89 | { |
| 90 | return (float) crif.getBounds2D(block).getWidth(); |
| 91 | } |
| 92 | |
| 93 | public float getHeight() |
| 94 | { |
| 95 | return (float) crif.getBounds2D(block).getHeight(); |
| 96 | } |
| 97 | |
| 98 | public float getMinX() |
| 99 | { |
| 100 | return (float) crif.getBounds2D(block).getX(); |
| 101 | } |
| 102 | |
| 103 | public float getMinY() |
| 104 | { |
| 105 | return (float) crif.getBounds2D(block).getY(); |
| 106 | } |
| 107 | |
| 108 | public ParameterBlock setParameterBlock(ParameterBlock block) |
| 109 | { |
| 110 | ParameterBlock result = this.block; |
| 111 | this.block = (ParameterBlock) block.clone(); |
| 112 | return result; |
| 113 | } |
| 114 | |
| 115 | public ParameterBlock getParameterBlock() |
| 116 | { |
| 117 | return block; |
| 118 | } |
| 119 | |
| 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 | |
| 135 | public RenderedImage createDefaultRendering() |
| 136 | { |
| 137 | return createRendering(new RenderContext(new AffineTransform())); |
| 138 | } |
| 139 | |
| 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 |