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SVG Salamander - tools and components for SVG rendering, manipulation and animation
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/*
* Font.java
*
*
* The Salamander Project - 2D and 3D graphics libraries in Java
* Copyright (C) 2004 Mark McKay
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Mark McKay can be contacted at [email protected]. Salamander and other
* projects can be found at http://www.kitfox.com
*
* Created on February 20, 2004, 10:00 PM
*/
package com.kitfox.svg;
import com.kitfox.svg.app.data.Handler;
import com.kitfox.svg.xml.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.net.*;
import java.util.List;
/**
* Implements an embedded font.
*
* SVG specification: http://www.w3.org/TR/SVG/fonts.html
*
* @author Mark McKay
* @author Mark McKay
*/
public class ImageSVG extends RenderableElement
{
float x = 0f;
float y = 0f;
float width = 0f;
float height = 0f;
// BufferedImage href = null;
URL imageSrc = null;
AffineTransform xform;
Rectangle2D bounds;
/** Creates a new instance of Font */
public ImageSVG()
{
}
protected void build() throws SVGException
{
super.build();
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("x"))) x = sty.getFloatValueWithUnits();
if (getPres(sty.setName("y"))) y = sty.getFloatValueWithUnits();
if (getPres(sty.setName("width"))) width = sty.getFloatValueWithUnits();
if (getPres(sty.setName("height"))) height = sty.getFloatValueWithUnits();
try {
if (getPres(sty.setName("xlink:href")))
{
URI src = sty.getURIValue(getXMLBase());
if ("data".equals(src.getScheme()))
{
imageSrc = new URL(null, src.toASCIIString(), new Handler());
}
else
{
try {
imageSrc = src.toURL();
}
catch (Exception e)
{
e.printStackTrace();
imageSrc = null;
}
}
}
}
catch (Exception e)
{
throw new SVGException(e);
}
diagram.getUniverse().registerImage(imageSrc);
//Set widths if not set
BufferedImage img = diagram.getUniverse().getImage(imageSrc);
if (img == null)
{
xform = new AffineTransform();
bounds = new Rectangle2D.Float();
return;
}
if (width == 0) width = img.getWidth();
if (height == 0) height = img.getHeight();
//Determine image xform
xform = new AffineTransform();
// xform.setToScale(this.width / img.getWidth(), this.height / img.getHeight());
// xform.translate(this.x, this.y);
xform.translate(this.x, this.y);
xform.scale(this.width / img.getWidth(), this.height / img.getHeight());
bounds = new Rectangle2D.Float(this.x, this.y, this.width, this.height);
}
public float getX() { return x; }
public float getY() { return y; }
public float getWidth() { return width; }
public float getHeight() { return height; }
void pick(Point2D point, boolean boundingBox, List retVec) throws SVGException
{
if (getBoundingBox().contains(point))
{
retVec.add(getPath(null));
}
}
void pick(Rectangle2D pickArea, AffineTransform ltw, boolean boundingBox, List retVec) throws SVGException
{
if (ltw.createTransformedShape(getBoundingBox()).intersects(pickArea))
{
retVec.add(getPath(null));
}
}
public void render(Graphics2D g) throws SVGException
{
StyleAttribute styleAttrib = new StyleAttribute();
if (getStyle(styleAttrib.setName("visibility")))
{
if (!styleAttrib.getStringValue().equals("visible")) return;
}
beginLayer(g);
float opacity = 1f;
if (getStyle(styleAttrib.setName("opacity")))
{
opacity = styleAttrib.getRatioValue();
}
if (opacity <= 0) return;
Composite oldComp = null;
if (opacity < 1)
{
oldComp = g.getComposite();
Composite comp = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, opacity);
g.setComposite(comp);
}
BufferedImage img = diagram.getUniverse().getImage(imageSrc);
if (img == null) return;
AffineTransform curXform = g.getTransform();
g.transform(xform);
g.drawImage(img, 0, 0, null);
g.setTransform(curXform);
if (oldComp != null) g.setComposite(oldComp);
finishLayer(g);
}
public Rectangle2D getBoundingBox()
{
return boundsToParent(bounds);
}
/**
* Updates all attributes in this diagram associated with a time event.
* Ie, all attributes with track information.
* @return - true if this node has changed state as a result of the time
* update
*/
public boolean updateTime(double curTime) throws SVGException
{
// if (trackManager.getNumTracks() == 0) return false;
boolean changeState = super.updateTime(curTime);
//Get current values for parameters
StyleAttribute sty = new StyleAttribute();
boolean shapeChange = false;
if (getPres(sty.setName("x")))
{
float newVal = sty.getFloatValueWithUnits();
if (newVal != x)
{
x = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("y")))
{
float newVal = sty.getFloatValueWithUnits();
if (newVal != y)
{
y = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("width")))
{
float newVal = sty.getFloatValueWithUnits();
if (newVal != width)
{
width = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("height")))
{
float newVal = sty.getFloatValueWithUnits();
if (newVal != height)
{
height = newVal;
shapeChange = true;
}
}
try {
if (getPres(sty.setName("xlink:href")))
{
URI src = sty.getURIValue(getXMLBase());
URL newVal = src.toURL();
if (!newVal.equals(imageSrc))
{
imageSrc = newVal;
shapeChange = true;
}
}
}
catch (IllegalArgumentException ie)
{
new Exception("Image provided with illegal value for href: \"" + sty.getStringValue() + '"', ie).printStackTrace();
}
catch (Exception e)
{
e.printStackTrace();
}
if (shapeChange)
{
build();
// diagram.getUniverse().registerImage(imageSrc);
//
// //Set widths if not set
// BufferedImage img = diagram.getUniverse().getImage(imageSrc);
// if (img == null)
// {
// xform = new AffineTransform();
// bounds = new Rectangle2D.Float();
// }
// else
// {
// if (width == 0) width = img.getWidth();
// if (height == 0) height = img.getHeight();
//
// //Determine image xform
// xform = new AffineTransform();
//// xform.setToScale(this.width / img.getWidth(), this.height / img.getHeight());
//// xform.translate(this.x, this.y);
// xform.translate(this.x, this.y);
// xform.scale(this.width / img.getWidth(), this.height / img.getHeight());
//
// bounds = new Rectangle2D.Float(this.x, this.y, this.width, this.height);
// }
//
// return true;
}
return changeState || shapeChange;
}
}