/*
* LinearGradient.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 mark@kitfox.com. Salamander and other
* projects can be found at http://www.kitfox.com
*
* Created on January 26, 2004, 1:54 AM
*/
package com.kitfox.svg;
import com.kitfox.svg.xml.StyleAttribute;
import com.kitfox.svg.xml.*;
import org.xml.sax.*;
import java.net.*;
import java.awt.*;
import java.awt.geom.*;
/**
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class Use extends ShapeElement {
float x = 0f;
float y = 0f;
float width = 1f;
float height = 1f;
SVGElement href = null;
AffineTransform refXform;
/** Creates a new instance of LinearGradient */
public Use() {
}
/*
public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
{
//Load style string
super.loaderStartElement(helper, attrs, parent);
String x = attrs.getValue("x");
String y = attrs.getValue("y");
String width = attrs.getValue("width");
String height = attrs.getValue("height");
String href = attrs.getValue("xlink:href");
if (x != null) this.x = (float)XMLParseUtil.parseRatio(x);
if (y != null) this.y = (float)XMLParseUtil.parseRatio(y);
if (width != null) this.width = (float)XMLParseUtil.parseRatio(width);
if (height != null) this.height = (float)XMLParseUtil.parseRatio(height);
if (href != null)
{
try {
URI src = getXMLBase().resolve(href);
this.href = helper.universe.getElement(src);
}
catch (Exception e)
{
e.printStackTrace();
}
}
//Determine use offset/scale
refXform = new AffineTransform();
refXform.translate(this.x, this.y);
refXform.scale(this.width, this.height);
}
*/
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();
if (getPres(sty.setName("xlink:href")))
{
URI src = sty.getURIValue(getXMLBase());
href = diagram.getUniverse().getElement(src);
}
//Determine use offset/scale
refXform = new AffineTransform();
refXform.translate(this.x, this.y);
}
public void render(Graphics2D g) throws SVGException
{
beginLayer(g);
//AffineTransform oldXform = g.getTransform();
AffineTransform oldXform = g.getTransform();
g.transform(refXform);
if (href == null || !(href instanceof RenderableElement)) return;
RenderableElement rendEle = (RenderableElement)href;
rendEle.pushParentContext(this);
rendEle.render(g);
rendEle.popParentContext();
g.setTransform(oldXform);
finishLayer(g);
}
public Shape getShape()
{
if (href instanceof ShapeElement)
{
Shape shape = ((ShapeElement)href).getShape();
shape = refXform.createTransformedShape(shape);
shape = shapeToParent(shape);
return shape;
}
return null;
}
public Rectangle2D getBoundingBox() throws SVGException
{
if (href instanceof ShapeElement)
{
ShapeElement shapeEle = (ShapeElement)href;
shapeEle.pushParentContext(this);
Rectangle2D bounds = shapeEle.getBoundingBox();
shapeEle.popParentContext();
bounds = refXform.createTransformedShape(bounds).getBounds2D();
bounds = boundsToParent(bounds);
return bounds;
}
return null;
}
/**
* 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;
}
}
if (getPres(sty.setName("xlink:href")))
{
URI src = sty.getURIValue(getXMLBase());
SVGElement newVal = diagram.getUniverse().getElement(src);
if (newVal != href)
{
href = newVal;
shapeChange = true;
}
}
/*
if (getPres(sty.setName("xlink:href")))
{
URI src = sty.getURIValue(getXMLBase());
href = diagram.getUniverse().getElement(src);
}
//Determine use offset/scale
refXform = new AffineTransform();
refXform.translate(this.x, this.y);
refXform.scale(this.width, this.height);
*/
if (shapeChange)
{
//Determine use offset/scale
refXform.setToTranslation(this.x, this.y);
refXform.scale(this.width, this.height);
return true;
}
return changeState;
}
}