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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.Rectangle2D;
import org.apache.batik.bridge.BridgeContext;
import org.apache.batik.gvt.GraphicsNode;
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);
}
}
/** {@inheritDoc} */
public void paint(Graphics2D g2d, Rectangle2D area) {
prepare(g2d, area);
root.paint(g2d);
}
}
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