/*****************************************************************************
* Copyright (C) The Apache Software Foundation. All rights reserved. *
* ------------------------------------------------------------------------- *
* This software is published under the terms of the Apache Software License *
* version 1.1, a copy of which has been included with this distribution in *
* the LICENSE file. *
*****************************************************************************/
package org.apache.batik.bridge;
import java.awt.RenderingHints;
import java.util.Map;
import org.apache.batik.gvt.GraphicsNode;
import org.apache.batik.gvt.ShapeNode;
import org.apache.batik.gvt.ShapePainter;
import org.w3c.dom.Element;
/**
* The base bridge class for shapes. Subclasses bridge <tt>ShapeNode</tt>.
*
* @author <a href="mailto:tkormann@apache.org">Thierry Kormann</a>
* @version $Id: SVGShapeElementBridge.java,v 1.10 2001/03/30 11:46:06 tkormann Exp $
*/
public abstract class SVGShapeElementBridge extends AbstractGraphicsNodeBridge {
/**
* Constructs a new bridge for SVG shapes.
*/
protected SVGShapeElementBridge() {}
/**
* Creates a graphics node using the specified BridgeContext and
* for the specified element.
*
* @param ctx the bridge context to use
* @param e the element that describes the graphics node to build
* @return a graphics node that represents the specified element
*/
public GraphicsNode createGraphicsNode(BridgeContext ctx, Element e) {
ShapeNode shapeNode = (ShapeNode)super.createGraphicsNode(ctx, e);
// delegates to subclasses the shape construction
buildShape(ctx, e, shapeNode);
// 'shape-rendering' and 'color-rendering'
Map shapeHints = CSSUtilities.convertShapeRendering(e);
Map colorHints = CSSUtilities.convertColorRendering(e);
if (shapeHints != null || colorHints != null) {
RenderingHints hints;
if (shapeHints == null) {
hints = new RenderingHints(colorHints);
} else if (colorHints == null) {
hints = new RenderingHints(shapeHints);
} else {
hints = new RenderingHints(shapeHints);
hints.putAll(colorHints);
}
shapeNode.setRenderingHints(hints);
}
return shapeNode;
}
/**
* Creates a <tt>ShapeNode</tt>.
*/
protected GraphicsNode instantiateGraphicsNode() {
return new ShapeNode();
}
/**
* Builds using the specified BridgeContext and element, the
* specified graphics node.
*
* @param ctx the bridge context to use
* @param e the element that describes the graphics node to build
* @param node the graphics node to build
*/
public void buildGraphicsNode(BridgeContext ctx,
Element e,
GraphicsNode node) {
ShapeNode shapeNode = (ShapeNode)node;
shapeNode.setShapePainter(createShapePainter(ctx, e, shapeNode));
super.buildGraphicsNode(ctx, e, node);
}
/**
* Creates the shape painter associated to the specified element.
* This implementation creates a shape painter considering the
* various fill and stroke properties.
*
* @param ctx the bridge context to use
* @param e the element that describes the shape painter to use
* @param shapeNode the shape node that is interested in its shape painter
*/
protected ShapePainter createShapePainter(BridgeContext ctx,
Element e,
ShapeNode shapeNode) {
// 'fill'
// 'fill-opacity'
// 'stroke'
// 'stroke-opacity',
// 'stroke-width'
// 'stroke-linecap'
// 'stroke-linejoin'
// 'stroke-miterlimit'
// 'stroke-dasharray'
// 'stroke-dashoffset'
return PaintServer.convertFillAndStroke(e, shapeNode, ctx);
}
/**
* Initializes the specified ShapeNode's shape defined by the
* specified Element and using the specified bridge context.
*
* @param ctx the bridge context to use
* @param e the element that describes the shape node to build
* @param node the shape node to initialize
*/
protected abstract void buildShape(BridgeContext ctx,
Element e,
ShapeNode node);
/**
* Returns false as shapes are not a container.
*/
public boolean isComposite() {
return false;
}
}