001/* 002 * SVG Salamander 003 * Copyright (c) 2004, Mark McKay 004 * All rights reserved. 005 * 006 * Redistribution and use in source and binary forms, with or 007 * without modification, are permitted provided that the following 008 * conditions are met: 009 * 010 * - Redistributions of source code must retain the above 011 * copyright notice, this list of conditions and the following 012 * disclaimer. 013 * - Redistributions in binary form must reproduce the above 014 * copyright notice, this list of conditions and the following 015 * disclaimer in the documentation and/or other materials 016 * provided with the distribution. 017 * 018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 019 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 020 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 021 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 022 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 023 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 025 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 026 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 027 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 028 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 029 * OF THE POSSIBILITY OF SUCH DAMAGE. 030 * 031 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other 032 * projects can be found at http://www.kitfox.com 033 * 034 * Created on April 1, 2004, 3:37 AM 035 */ 036 037package com.kitfox.svg.pattern; 038 039import com.kitfox.svg.SVGConst; 040import java.awt.*; 041import java.awt.geom.*; 042import java.awt.image.*; 043import java.util.logging.Level; 044import java.util.logging.Logger; 045 046/** 047 * @author Mark McKay 048 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 049 */ 050public class PatternPaintContext implements PaintContext 051{ 052 BufferedImage source; //Image we're rendering from 053 Rectangle deviceBounds; //int size of rectangle we're rendering to 054// AffineTransform userXform; //xform from user space to device space 055// AffineTransform distortXform; //distortion applied to this pattern 056 057 AffineTransform xform; //distortion applied to this pattern 058 059 int sourceWidth; 060 int sourceHeight; 061 062 //Raster we use to build tile 063 BufferedImage buf; 064 065 /** Creates a new instance of PatternPaintContext */ 066 public PatternPaintContext(BufferedImage source, Rectangle deviceBounds, AffineTransform userXform, AffineTransform distortXform) 067 { 068//System.err.println("Bounds " + deviceBounds); 069 this.source = source; 070 this.deviceBounds = deviceBounds; 071 try { 072// this.distortXform = distortXform.createInverse(); 073// this.userXform = userXform.createInverse(); 074 075// xform = userXform.createInverse(); 076// xform.concatenate(distortXform.createInverse()); 077 xform = distortXform.createInverse(); 078 xform.concatenate(userXform.createInverse()); 079 } 080 catch (Exception e) 081 { 082 Logger.getLogger(SVGConst.SVG_LOGGER).log(Level.WARNING, null, e); 083 } 084 085 sourceWidth = source.getWidth(); 086 sourceHeight = source.getHeight(); 087 } 088 089 public void dispose() { 090 } 091 092 public ColorModel getColorModel() { 093 return source.getColorModel(); 094 } 095 096 public Raster getRaster(int x, int y, int w, int h) 097 { 098//System.err.println("" + x + ", " + y + ", " + w + ", " + h); 099 if (buf == null || buf.getWidth() != w || buf.getHeight() != buf.getHeight()) 100 { 101 buf = new BufferedImage(w, h, source.getType()); 102 } 103 104// Point2D.Float srcPt = new Point2D.Float(), srcPt2 = new Point2D.Float(), destPt = new Point2D.Float(); 105 Point2D.Float srcPt = new Point2D.Float(), destPt = new Point2D.Float(); 106 for (int j = 0; j < h; j++) 107 { 108 for (int i = 0; i < w; i++) 109 { 110 destPt.setLocation(i + x, j + y); 111 112 xform.transform(destPt, srcPt); 113 114// userXform.transform(destPt, srcPt2); 115// distortXform.transform(srcPt2, srcPt); 116 117 int ii = ((int)srcPt.x) % sourceWidth; 118 if (ii < 0) ii += sourceWidth; 119 int jj = ((int)srcPt.y) % sourceHeight; 120 if (jj < 0) jj += sourceHeight; 121 122 buf.setRGB(i, j, source.getRGB(ii, jj)); 123 } 124 } 125 126 return buf.getData(); 127 } 128 129 public static void main(String[] argv) 130 { 131 int i = -4; 132 System.err.println("Hello " + (i % 4)); 133 } 134 135}