| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| |
| */ |
| package org.apache.batik.svggen; |
| |
| import java.awt.Graphics2D; |
| import java.awt.TexturePaint; |
| import java.awt.geom.Rectangle2D; |
| import java.awt.image.BufferedImage; |
| import java.awt.image.RenderedImage; |
| |
| import org.apache.batik.ext.awt.g2d.GraphicContext; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Utility class that converts a TexturePaint object into an |
| * SVG pattern element |
| * |
| * @author <a href="mailto:vincent.hardy@eng.sun.com">Vincent Hardy</a> |
| * @version $Id$ |
| */ |
| public class SVGTexturePaint extends AbstractSVGConverter { |
| /** |
| * @param generatorContext used to build Elements |
| */ |
| public SVGTexturePaint(SVGGeneratorContext generatorContext) { |
| super(generatorContext); |
| } |
| |
| /** |
| * Converts part or all of the input GraphicContext into |
| * a set of attribute/value pairs and related definitions |
| * |
| * @param gc GraphicContext to be converted |
| * @return descriptor of the attributes required to represent |
| * some or all of the GraphicContext state, along |
| * with the related definitions |
| * @see org.apache.batik.svggen.SVGDescriptor |
| */ |
| public SVGDescriptor toSVG(GraphicContext gc) { |
| return toSVG((TexturePaint)gc.getPaint()); |
| } |
| |
| /** |
| * @param texture the TexturePaint to be converted |
| * @return a descriptor whose paint value references |
| * a pattern. The definition of the |
| * pattern in put in the patternDefsMap |
| */ |
| public SVGPaintDescriptor toSVG(TexturePaint texture) { |
| // Reuse definition if pattern has already been converted |
| SVGPaintDescriptor patternDesc = (SVGPaintDescriptor)descMap.get(texture); |
| Document domFactory = generatorContext.domFactory; |
| |
| if (patternDesc == null) { |
| Rectangle2D anchorRect = texture.getAnchorRect(); |
| Element patternDef = domFactory.createElementNS(SVG_NAMESPACE_URI, |
| SVG_PATTERN_TAG); |
| patternDef.setAttributeNS(null, SVG_PATTERN_UNITS_ATTRIBUTE, |
| SVG_USER_SPACE_ON_USE_VALUE); |
| |
| // |
| // First, set the pattern anchor |
| // |
| patternDef.setAttributeNS(null, SVG_X_ATTRIBUTE, |
| doubleString(anchorRect.getX())); |
| patternDef.setAttributeNS(null, SVG_Y_ATTRIBUTE, |
| doubleString(anchorRect.getY())); |
| patternDef.setAttributeNS(null, SVG_WIDTH_ATTRIBUTE, |
| doubleString(anchorRect.getWidth())); |
| patternDef.setAttributeNS(null, SVG_HEIGHT_ATTRIBUTE, |
| doubleString(anchorRect.getHeight())); |
| |
| // |
| // Now, add an image element for the image. |
| // |
| BufferedImage textureImage = texture.getImage(); |
| // |
| // Rescale the image to fit the anchor rectangle |
| // |
| if (textureImage.getWidth() > 0 && |
| textureImage.getHeight() > 0){ |
| |
| // Rescale only if necessary |
| if(textureImage.getWidth() != anchorRect.getWidth() || |
| textureImage.getHeight() != anchorRect.getHeight()){ |
| |
| // Rescale only if anchor area is not a point or a line |
| if(anchorRect.getWidth() > 0 && |
| anchorRect.getHeight() > 0){ |
| double scaleX = |
| anchorRect.getWidth()/textureImage.getWidth(); |
| double scaleY = |
| anchorRect.getHeight()/textureImage.getHeight(); |
| BufferedImage newImage |
| = new BufferedImage((int)(scaleX* |
| textureImage.getWidth()), |
| (int)(scaleY* |
| textureImage.getHeight()), |
| BufferedImage.TYPE_INT_ARGB); |
| |
| Graphics2D g = newImage.createGraphics(); |
| g.scale(scaleX, scaleY); |
| g.drawImage(textureImage, 0, 0, null); |
| g.dispose(); |
| |
| textureImage = newImage; |
| } |
| } |
| } |
| |
| // generatorContext.imageHandler. |
| // handleImage((RenderedImage)textureImage, imageElement, |
| // generatorContext); |
| |
| Element patternContent |
| = generatorContext.genericImageHandler.createElement |
| (generatorContext); |
| |
| generatorContext.genericImageHandler.handleImage |
| ((RenderedImage)textureImage, |
| patternContent, |
| 0, |
| 0, |
| textureImage.getWidth(), |
| textureImage.getHeight(), |
| generatorContext); |
| |
| patternDef.appendChild(patternContent); |
| |
| patternDef.setAttributeNS(null, SVG_ID_ATTRIBUTE, |
| generatorContext.idGenerator. |
| generateID(ID_PREFIX_PATTERN)); |
| |
| // StringBuffer patternAttrBuf = new StringBuffer(URL_PREFIX); |
| // patternAttrBuf.append(SIGN_POUND); |
| // patternAttrBuf.append(patternDef.getAttributeNS(null, SVG_ID_ATTRIBUTE)); |
| // patternAttrBuf.append(URL_SUFFIX); |
| String patternAttrBuf = URL_PREFIX |
| + SIGN_POUND |
| + patternDef.getAttributeNS(null, SVG_ID_ATTRIBUTE) |
| + URL_SUFFIX; |
| patternDesc = new SVGPaintDescriptor(patternAttrBuf, SVG_OPAQUE_VALUE, patternDef); |
| |
| descMap.put(texture, patternDesc); |
| defSet.add(patternDef); |
| } |
| |
| return patternDesc; |
| } |
| } |