| /* RenderableImageOp.java -- |
| Copyright (C) 2002 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.awt.image.renderable; |
| |
| import java.awt.RenderingHints; |
| import java.awt.geom.AffineTransform; |
| import java.awt.image.RenderedImage; |
| import java.util.Vector; |
| |
| public class RenderableImageOp implements RenderableImage |
| { |
| private final ContextualRenderedImageFactory crif; |
| private ParameterBlock block; |
| |
| public RenderableImageOp(ContextualRenderedImageFactory crif, |
| ParameterBlock block) |
| { |
| this.crif = crif; |
| this.block = (ParameterBlock) block.clone(); |
| } |
| |
| public Vector getSources() |
| { |
| if (block.sources == null) |
| return null; |
| int size = block.sources.size(); |
| Vector v = new Vector(); |
| for (int i = 0; i < size; i++) |
| { |
| Object o = block.sources.get(i); |
| if (o instanceof RenderableImage) |
| v.add(o); |
| } |
| return v; |
| } |
| |
| public Object getProperty(String name) |
| { |
| return crif.getProperty(block, name); |
| } |
| |
| public String[] getPropertyNames() |
| { |
| return crif.getPropertyNames(); |
| } |
| |
| public boolean isDynamic() |
| { |
| return crif.isDynamic(); |
| } |
| |
| public float getWidth() |
| { |
| return (float) crif.getBounds2D(block).getWidth(); |
| } |
| |
| public float getHeight() |
| { |
| return (float) crif.getBounds2D(block).getHeight(); |
| } |
| |
| public float getMinX() |
| { |
| return (float) crif.getBounds2D(block).getX(); |
| } |
| |
| public float getMinY() |
| { |
| return (float) crif.getBounds2D(block).getY(); |
| } |
| |
| public ParameterBlock setParameterBlock(ParameterBlock block) |
| { |
| ParameterBlock result = this.block; |
| this.block = (ParameterBlock) block.clone(); |
| return result; |
| } |
| |
| public ParameterBlock getParameterBlock() |
| { |
| return block; |
| } |
| |
| public RenderedImage createScaledRendering(int w, int h, |
| RenderingHints hints) |
| { |
| if (w == 0) |
| if (h == 0) |
| throw new IllegalArgumentException(); |
| else |
| w = Math.round(h * getWidth() / getHeight()); |
| if (h == 0) |
| h = Math.round(w * getHeight() / getWidth()); |
| AffineTransform xform = AffineTransform.getScaleInstance(w * getWidth(), |
| h * getHeight()); |
| return createRendering(new RenderContext(xform, hints)); |
| } |
| |
| public RenderedImage createDefaultRendering() |
| { |
| return createRendering(new RenderContext(new AffineTransform())); |
| } |
| |
| public RenderedImage createRendering(RenderContext context) |
| { |
| ParameterBlock copy = (ParameterBlock) block.clone(); |
| int i = block.sources.size(); |
| while (--i >= 0) |
| { |
| Object o = block.sources.get(i); |
| if (o instanceof RenderableImage) |
| { |
| RenderableImage ri = (RenderableImage) o; |
| RenderContext rc = crif.mapRenderContext(i, context, block, ri); |
| copy.sources.set(i, ri.createRendering(rc)); |
| } |
| } |
| // Now copy.sources should be only RenderedImages. |
| return crif.create(context, copy); |
| } |
| } // class RenderableImageOp |