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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.image.loader.batik;
-
- import java.awt.Dimension;
- import java.awt.Graphics2D;
- import java.awt.geom.AffineTransform;
- import java.awt.geom.Rectangle2D;
- import java.math.BigDecimal;
- import java.math.RoundingMode;
-
- import org.apache.batik.bridge.BridgeContext;
- import org.apache.batik.gvt.GraphicsNode;
-
- import org.apache.xmlgraphics.java2d.AbstractGraphics2D;
- import org.apache.xmlgraphics.java2d.Graphics2DImagePainter;
-
- /**
- * A graphics 2D image painter implementation for painting SVG images using Batik.
- */
- public class Graphics2DImagePainterImpl implements Graphics2DImagePainter {
-
- private final GraphicsNode root;
- /** the Batik bridge context */
- protected final BridgeContext ctx;
- /** the intrinsic size of the image */
- protected final Dimension imageSize;
-
- /**
- * Main constructor
- *
- * @param root the graphics node root
- * @param ctx the bridge context
- * @param imageSize the image size
- */
- public Graphics2DImagePainterImpl(GraphicsNode root, BridgeContext ctx, Dimension imageSize) {
- this.root = root;
- this.imageSize = imageSize;
- this.ctx = ctx;
- }
-
- /** {@inheritDoc} */
- public Dimension getImageSize() {
- return imageSize;
- }
-
- private void prepare(Graphics2D g2d, Rectangle2D area) {
- // If no viewbox is defined in the svg file, a viewbox of 100x100 is
- // assumed, as defined in SVGUserAgent.getViewportSize()
- double tx = area.getX();
- double ty = area.getY();
- if (tx != 0 || ty != 0) {
- g2d.translate(tx, ty);
- }
-
- float iw = (float) ctx.getDocumentSize().getWidth();
- float ih = (float) ctx.getDocumentSize().getHeight();
- float w = (float) area.getWidth();
- float h = (float) area.getHeight();
- float sx = w / iw;
- float sy = h / ih;
- if (sx != 1.0 || sy != 1.0) {
- g2d.scale(sx, sy);
- }
- normaliseScale(g2d);
- }
-
- private void normaliseScale(Graphics2D g2d) {
- if (!(g2d instanceof AbstractGraphics2D)) {
- AffineTransform old = g2d.getTransform();
- double scaleX = BigDecimal.valueOf(old.getScaleX()).setScale(2, RoundingMode.HALF_UP).doubleValue();
- double scaleY = BigDecimal.valueOf(old.getScaleY()).setScale(2, RoundingMode.HALF_UP).doubleValue();
- AffineTransform newat = new AffineTransform(scaleX, old.getShearY(), old.getShearX(), scaleY,
- old.getTranslateX(), old.getTranslateY());
- g2d.setTransform(newat);
- }
- }
-
- /** {@inheritDoc} */
- public void paint(Graphics2D g2d, Rectangle2D area) {
- prepare(g2d, area);
- root.paint(g2d);
- }
-
- }
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