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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.java2d;
-
- import java.awt.Graphics2D;
- import java.awt.Rectangle;
- import java.awt.geom.AffineTransform;
- import java.awt.image.BufferedImage;
- import java.awt.image.RenderedImage;
- import java.awt.image.WritableRaster;
- import java.io.IOException;
-
- import org.apache.xmlgraphics.image.GraphicsConstants;
- import org.apache.xmlgraphics.image.loader.Image;
- import org.apache.xmlgraphics.image.loader.ImageFlavor;
- import org.apache.xmlgraphics.image.loader.ImageInfo;
- import org.apache.xmlgraphics.image.loader.impl.ImageRendered;
-
- import org.apache.fop.render.ImageHandler;
- import org.apache.fop.render.RenderingContext;
-
- /**
- * Image handler implementation that paints {@link RenderedImage} instances on a {@link Graphics2D}
- * object.
- */
- public class Java2DImageHandlerRenderedImage implements ImageHandler {
-
- /** {@inheritDoc} */
- public int getPriority() {
- return 300;
- }
-
- /** {@inheritDoc} */
- public Class getSupportedImageClass() {
- return ImageRendered.class;
- }
-
- /** {@inheritDoc} */
- public ImageFlavor[] getSupportedImageFlavors() {
- return new ImageFlavor[] {
- ImageFlavor.BUFFERED_IMAGE,
- ImageFlavor.RENDERED_IMAGE,
- };
- }
-
- /** {@inheritDoc} */
- public void handleImage(RenderingContext context, Image image, Rectangle pos)
- throws IOException {
- Java2DRenderingContext java2dContext = (Java2DRenderingContext)context;
- ImageInfo info = image.getInfo();
- ImageRendered imageRend = (ImageRendered)image;
- Graphics2D g2d = java2dContext.getGraphics2D();
-
- AffineTransform at = new AffineTransform();
- at.translate(pos.x, pos.y);
- //scaling based on layout instructions
- double sx = pos.getWidth() / (double)info.getSize().getWidthMpt();
- double sy = pos.getHeight() / (double)info.getSize().getHeightMpt();
-
- //scaling because of image resolution
- //float sourceResolution = java2dContext.getUserAgent().getSourceResolution();
- //source resolution seems to be a bad idea, not sure why
- float sourceResolution = GraphicsConstants.DEFAULT_DPI;
- sourceResolution *= 1000; //we're working in the millipoint area
- sx *= sourceResolution / info.getSize().getDpiHorizontal();
- sy *= sourceResolution / info.getSize().getDpiVertical();
- at.scale(sx, sy);
- RenderedImage rend = imageRend.getRenderedImage();
- if (imageRend.getTransparentColor() != null && !rend.getColorModel().hasAlpha()) {
- int transCol = imageRend.getTransparentColor().getRGB();
- BufferedImage bufImage = makeTransparentImage(rend);
- WritableRaster alphaRaster = bufImage.getAlphaRaster();
- //TODO Masked images: Does anyone know a more efficient method to do this?
- final int[] transparent = new int[] {0x00};
- for (int y = 0, maxy = bufImage.getHeight(); y < maxy; y++) {
- for (int x = 0, maxx = bufImage.getWidth(); x < maxx; x++) {
- int col = bufImage.getRGB(x, y);
- if (col == transCol) {
- //Mask out all pixels that match the transparent color
- alphaRaster.setPixel(x, y, transparent);
- }
- }
- }
- g2d.drawRenderedImage(bufImage, at);
- } else {
- g2d.drawRenderedImage(rend, at);
- }
- }
-
- private BufferedImage makeTransparentImage(RenderedImage src) {
- BufferedImage bufImage = new BufferedImage(src.getWidth(), src.getHeight(),
- BufferedImage.TYPE_INT_ARGB);
- Graphics2D g2d = bufImage.createGraphics();
- g2d.drawRenderedImage(src, new AffineTransform());
- g2d.dispose();
- return bufImage;
- }
-
- /** {@inheritDoc} */
- public boolean isCompatible(RenderingContext targetContext, Image image) {
- return (image == null || image instanceof ImageRendered)
- && targetContext instanceof Java2DRenderingContext;
- }
-
- }
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