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- /*
- * 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.
- */
-
- /* $Id$ */
-
- package org.apache.fop.render.pcl;
-
- import java.awt.Dimension;
- import java.awt.Rectangle;
- import java.awt.geom.AffineTransform;
- import java.awt.geom.Point2D;
- import java.awt.geom.Rectangle2D;
- import java.io.IOException;
-
- import org.apache.commons.io.output.ByteArrayOutputStream;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
-
- import org.apache.xmlgraphics.image.loader.Image;
- import org.apache.xmlgraphics.image.loader.ImageException;
- import org.apache.xmlgraphics.image.loader.ImageFlavor;
- import org.apache.xmlgraphics.image.loader.ImageManager;
- import org.apache.xmlgraphics.image.loader.impl.ImageGraphics2D;
- import org.apache.xmlgraphics.image.loader.impl.ImageRendered;
- import org.apache.xmlgraphics.java2d.GraphicContext;
- import org.apache.xmlgraphics.util.UnitConv;
-
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.render.ImageHandler;
- import org.apache.fop.render.ImageHandlerUtil;
- import org.apache.fop.render.RenderingContext;
-
- /**
- * Image handler implementation that paints Graphics2D images in PCL. Since PCL is limited in its
- * vector graphics capabilities, there's a fallback built in that switches to bitmap painting
- * if an advanced feature is encountered.
- */
- public class PCLImageHandlerGraphics2D implements ImageHandler {
-
- /** logging instance */
- private static Log log = LogFactory.getLog(PCLImageHandlerGraphics2D.class);
-
- /** {@inheritDoc} */
- public int getPriority() {
- return 400;
- }
-
- /** {@inheritDoc} */
- public Class getSupportedImageClass() {
- return ImageGraphics2D.class;
- }
-
- /** {@inheritDoc} */
- public ImageFlavor[] getSupportedImageFlavors() {
- return new ImageFlavor[] {
- ImageFlavor.GRAPHICS2D
- };
- }
-
- /** {@inheritDoc} */
- public void handleImage(RenderingContext context, Image image, Rectangle pos)
- throws IOException {
- PCLRenderingContext pclContext = (PCLRenderingContext)context;
- ImageGraphics2D imageG2D = (ImageGraphics2D)image;
- Dimension imageDim = imageG2D.getSize().getDimensionMpt();
- PCLGenerator gen = pclContext.getPCLGenerator();
-
- Point2D transPoint = pclContext.transformedPoint(pos.x, pos.y);
- gen.setCursorPos(transPoint.getX(), transPoint.getY());
-
- boolean painted = false;
- ByteArrayOutputStream baout = new ByteArrayOutputStream();
- PCLGenerator tempGen = new PCLGenerator(baout, gen.getMaximumBitmapResolution());
- tempGen.setDitheringQuality(gen.getDitheringQuality());
- try {
- GraphicContext ctx = (GraphicContext)pclContext.getGraphicContext().clone();
-
- AffineTransform prepareHPGL2 = new AffineTransform();
- prepareHPGL2.scale(0.001, 0.001);
- ctx.setTransform(prepareHPGL2);
-
- PCLGraphics2D graphics = new PCLGraphics2D(tempGen);
- graphics.setGraphicContext(ctx);
- graphics.setClippingDisabled(false /*pclContext.isClippingDisabled()*/);
- Rectangle2D area = new Rectangle2D.Double(
- 0.0, 0.0, imageDim.getWidth(), imageDim.getHeight());
- imageG2D.getGraphics2DImagePainter().paint(graphics, area);
-
- //If we arrive here, the graphic is natively paintable, so write the graphic
- gen.writeCommand("*c" + gen.formatDouble4(pos.width / 100f) + "x"
- + gen.formatDouble4(pos.height / 100f) + "Y");
- gen.writeCommand("*c0T");
- gen.enterHPGL2Mode(false);
- gen.writeText("\nIN;");
- gen.writeText("SP1;");
- //One Plotter unit is 0.025mm!
- double scale = imageDim.getWidth() / UnitConv.mm2pt(imageDim.getWidth() * 0.025);
- gen.writeText("SC0," + gen.formatDouble4(scale)
- + ",0,-" + gen.formatDouble4(scale) + ",2;");
- gen.writeText("IR0,100,0,100;");
- gen.writeText("PU;PA0,0;\n");
- baout.writeTo(gen.getOutputStream()); //Buffer is written to output stream
- gen.writeText("\n");
-
- gen.enterPCLMode(false);
- painted = true;
- } catch (UnsupportedOperationException uoe) {
- log.debug(
- "Cannot paint graphic natively. Falling back to bitmap painting. Reason: "
- + uoe.getMessage());
- }
-
- if (!painted) {
- //Fallback solution: Paint to a BufferedImage
- FOUserAgent ua = context.getUserAgent();
- ImageManager imageManager = ua.getImageManager();
- ImageRendered imgRend;
- try {
- imgRend = (ImageRendered)imageManager.convertImage(
- imageG2D, new ImageFlavor[] {ImageFlavor.RENDERED_IMAGE}/*, hints*/);
- } catch (ImageException e) {
- throw new IOException(
- "Image conversion error while converting the image to a bitmap"
- + " as a fallback measure: " + e.getMessage());
- }
-
- gen.paintBitmap(imgRend.getRenderedImage(), new Dimension(pos.width, pos.height),
- pclContext.isSourceTransparencyEnabled(), pclContext.getPCLUtil());
- }
- }
-
- /** {@inheritDoc} */
- public boolean isCompatible(RenderingContext targetContext, Image image) {
- boolean supported = (image == null || image instanceof ImageGraphics2D)
- && targetContext instanceof PCLRenderingContext;
- if (supported) {
- String mode = (String)targetContext.getHint(ImageHandlerUtil.CONVERSION_MODE);
- if (ImageHandlerUtil.isConversionModeBitmap(mode)) {
- //Disabling this image handler automatically causes a bitmap to be generated
- return false;
- }
- }
- return supported;
- }
-
- }
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