1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 /* $Id: PSImageHandlerGraphics2D.java 1812122 2017-10-13 12:12:52Z ssteiner $ */ 19 20 package org.apache.fop.render.ps; 21 22 import java.awt.Dimension; 23 import java.awt.Rectangle; 24 import java.awt.geom.AffineTransform; 25 import java.awt.geom.Dimension2D; 26 import java.awt.geom.Rectangle2D; 27 import java.io.IOException; 28 29 import org.apache.xmlgraphics.image.loader.Image; 30 import org.apache.xmlgraphics.image.loader.ImageFlavor; 31 import org.apache.xmlgraphics.image.loader.ImageInfo; 32 import org.apache.xmlgraphics.image.loader.impl.ImageGraphics2D; 33 import org.apache.xmlgraphics.java2d.GeneralGraphics2DImagePainter; 34 import org.apache.xmlgraphics.java2d.Graphics2DImagePainter; 35 import org.apache.xmlgraphics.java2d.ps.PSGraphics2D; 36 import org.apache.xmlgraphics.ps.FormGenerator; 37 import org.apache.xmlgraphics.ps.PSGenerator; 38 import org.apache.xmlgraphics.ps.PSProcSets; 39 40 import org.apache.fop.fonts.FontInfo; 41 import org.apache.fop.render.RenderingContext; 42 43 /** 44 * Image handler implementation which handles vector graphics (Java2D) for PostScript output. 45 */ 46 public class PSImageHandlerGraphics2D implements PSImageHandler { 47 48 private static final ImageFlavor[] FLAVORS = new ImageFlavor[] { 49 ImageFlavor.GRAPHICS2D 50 }; 51 52 /** {@inheritDoc} */ handleImage(RenderingContext context, Image image, Rectangle pos)53 public void handleImage(RenderingContext context, Image image, Rectangle pos) 54 throws IOException { 55 PSRenderingContext psContext = (PSRenderingContext)context; 56 PSGenerator gen = psContext.getGenerator(); 57 ImageGraphics2D imageG2D = (ImageGraphics2D)image; 58 Graphics2DImagePainter painter = imageG2D.getGraphics2DImagePainter(); 59 60 float fx = (float)pos.getX() / 1000f; 61 float fy = (float)pos.getY() / 1000f; 62 float fwidth = (float)pos.getWidth() / 1000f; 63 float fheight = (float)pos.getHeight() / 1000f; 64 65 // get the 'width' and 'height' attributes of the SVG document 66 Dimension dim = painter.getImageSize(); 67 float imw = (float)dim.getWidth() / 1000f; 68 float imh = (float)dim.getHeight() / 1000f; 69 70 float sx = fwidth / imw; 71 float sy = fheight / imh; 72 73 gen.commentln("%FOPBeginGraphics2D"); 74 gen.saveGraphicsState(); 75 final boolean clip = false; 76 if (clip) { 77 // Clip to the image area. 78 gen.writeln("newpath"); 79 gen.defineRect(fx, fy, fwidth, fheight); 80 gen.writeln("clip"); 81 } 82 83 // transform so that the coordinates (0,0) is from the top left 84 // and positive is down and to the right. (0,0) is where the 85 // viewBox puts it. 86 gen.concatMatrix(sx, 0, 0, sy, fx, fy); 87 88 final boolean textAsShapes = false; 89 PSGraphics2D graphics = (painter instanceof GeneralGraphics2DImagePainter) 90 ? (PSGraphics2D) ((GeneralGraphics2DImagePainter) painter).getGraphics(textAsShapes, gen) 91 : new PSGraphics2D(textAsShapes, gen); 92 graphics.setGraphicContext(new org.apache.xmlgraphics.java2d.GraphicContext()); 93 AffineTransform transform = new AffineTransform(); 94 // scale to viewbox 95 transform.translate(fx, fy); 96 gen.getCurrentState().concatMatrix(transform); 97 Rectangle2D area = new Rectangle2D.Double(0.0, 0.0, imw, imh); 98 if (painter instanceof GeneralGraphics2DImagePainter) { 99 PSFontUtils.addFallbackFonts(psContext.getFontInfo(), (GeneralGraphics2DImagePainter) painter); 100 } 101 painter.paint(graphics, area); 102 gen.restoreGraphicsState(); 103 gen.commentln("%FOPEndGraphics2D"); 104 } 105 106 /** {@inheritDoc} */ generateForm(RenderingContext context, Image image, final PSImageFormResource form)107 public void generateForm(RenderingContext context, Image image, final PSImageFormResource form) 108 throws IOException { 109 PSRenderingContext psContext = (PSRenderingContext)context; 110 PSGenerator gen = psContext.getGenerator(); 111 final ImageGraphics2D imageG2D = (ImageGraphics2D)image; 112 ImageInfo info = image.getInfo(); 113 114 FormGenerator formGen = buildFormGenerator(gen.getPSLevel(), form, info, imageG2D, psContext.getFontInfo()); 115 formGen.generate(gen); 116 } 117 /** {@inheritDoc} */ getPriority()118 public int getPriority() { 119 return 200; 120 } 121 122 /** {@inheritDoc} */ getSupportedImageClass()123 public Class getSupportedImageClass() { 124 return ImageGraphics2D.class; 125 } 126 127 /** {@inheritDoc} */ getSupportedImageFlavors()128 public ImageFlavor[] getSupportedImageFlavors() { 129 return FLAVORS; 130 } 131 132 /** {@inheritDoc} */ isCompatible(RenderingContext targetContext, Image image)133 public boolean isCompatible(RenderingContext targetContext, Image image) { 134 if (targetContext instanceof PSRenderingContext) { 135 return (image == null || image instanceof ImageGraphics2D); 136 } 137 return false; 138 } 139 buildFormGenerator(int psLanguageLevel, final PSImageFormResource form, final ImageInfo info, final ImageGraphics2D imageG2D, final FontInfo fontInfo)140 private FormGenerator buildFormGenerator(int psLanguageLevel, final PSImageFormResource form, final ImageInfo info, 141 final ImageGraphics2D imageG2D, final FontInfo fontInfo) { 142 String imageDescription = info.getMimeType() + " " + info.getOriginalURI(); 143 final Dimension2D dimensionsPt = info.getSize().getDimensionPt(); 144 final Dimension2D dimensionsMpt = info.getSize().getDimensionMpt(); 145 FormGenerator formGen; 146 147 if (psLanguageLevel <= 2) { 148 formGen = new EPSFormGenerator(form.getName(), imageDescription, dimensionsPt) { 149 150 @Override 151 void doGeneratePaintProc(PSGenerator gen) throws IOException { 152 paintImageG2D(imageG2D, dimensionsMpt, gen, fontInfo); 153 } 154 }; 155 } else { 156 formGen = new EPSFormGenerator(form.getName(), imageDescription, dimensionsPt) { 157 158 @Override 159 protected void generateAdditionalDataStream(PSGenerator gen) throws IOException { 160 gen.writeln("/" + form.getName() + ":Data currentfile <<"); 161 gen.writeln(" /Filter /SubFileDecode"); 162 gen.writeln(" /DecodeParms << /EODCount 0 /EODString (%FOPEndOfData) >>"); 163 gen.writeln(">> /ReusableStreamDecode filter"); 164 paintImageG2D(imageG2D, dimensionsMpt, gen, fontInfo); 165 gen.writeln("%FOPEndOfData"); 166 gen.writeln("def"); 167 } 168 169 @Override 170 void doGeneratePaintProc(PSGenerator gen) throws IOException { 171 gen.writeln(form.getName() + ":Data 0 setfileposition"); 172 gen.writeln(form.getName() + ":Data cvx exec"); 173 } 174 }; 175 } 176 return formGen; 177 } 178 179 private abstract static class EPSFormGenerator extends FormGenerator { 180 EPSFormGenerator(String formName, String title, Dimension2D dimensions)181 EPSFormGenerator(String formName, String title, Dimension2D dimensions) { 182 super(formName, title, dimensions); 183 } 184 paintImageG2D(final ImageGraphics2D imageG2D, Dimension2D dimensionsMpt, PSGenerator gen, FontInfo fontInfo)185 protected void paintImageG2D(final ImageGraphics2D imageG2D, Dimension2D dimensionsMpt, 186 PSGenerator gen, FontInfo fontInfo) throws IOException { 187 PSGraphics2DAdapter adapter = new PSGraphics2DAdapter(gen, false, fontInfo); 188 adapter.paintImage(imageG2D.getGraphics2DImagePainter(), 189 null, 190 0, 0, 191 (int) Math.round(dimensionsMpt.getWidth()), 192 (int) Math.round(dimensionsMpt.getHeight())); 193 } 194 195 @Override generatePaintProc(PSGenerator gen)196 protected final void generatePaintProc(PSGenerator gen) throws IOException { 197 gen.getResourceTracker().notifyResourceUsageOnPage( 198 PSProcSets.EPS_PROCSET); 199 gen.writeln("BeginEPSF"); 200 doGeneratePaintProc(gen); 201 gen.writeln("EndEPSF"); 202 } 203 doGeneratePaintProc(PSGenerator gen)204 abstract void doGeneratePaintProc(PSGenerator gen) throws IOException; 205 } 206 } 207