/*
* SVGRoot.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 February 18, 2004, 5:33 PM
*/
package com.kitfox.svg;
import com.kitfox.svg.xml.NumberWithUnits;
import com.kitfox.svg.xml.StyleAttribute;
import java.awt.geom.*;
import java.awt.*;
/**
* The root element of an SVG tree.
*
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class SVGRoot extends Group
{
NumberWithUnits x;
NumberWithUnits y;
NumberWithUnits width;
NumberWithUnits height;
// final Rectangle2D.Float viewBox = new Rectangle2D.Float();
Rectangle2D.Float viewBox = null;
public static final int PA_X_NONE = 0;
public static final int PA_X_MIN = 1;
public static final int PA_X_MID = 2;
public static final int PA_X_MAX = 3;
public static final int PA_Y_NONE = 0;
public static final int PA_Y_MIN = 1;
public static final int PA_Y_MID = 2;
public static final int PA_Y_MAX = 3;
public static final int PS_MEET = 0;
public static final int PS_SLICE = 1;
int parSpecifier = PS_MEET;
int parAlignX = PA_X_MID;
int parAlignY = PA_Y_MID;
final AffineTransform viewXform = new AffineTransform();
final Rectangle2D.Float clipRect = new Rectangle2D.Float();
/** Creates a new instance of SVGRoot */
public SVGRoot()
{
}
/*
public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
{
//Load style string
super.loaderStartElement(helper, attrs, parent);
x = XMLParseUtil.parseNumberWithUnits(attrs.getValue("x"));
y = XMLParseUtil.parseNumberWithUnits(attrs.getValue("y"));
width = XMLParseUtil.parseNumberWithUnits(attrs.getValue("width"));
height = XMLParseUtil.parseNumberWithUnits(attrs.getValue("height"));
String viewBox = attrs.getValue("viewBox");
float[] coords = XMLParseUtil.parseFloatList(viewBox);
if (coords == null)
{
//this.viewBox.setRect(0, 0, width.getValue(), height.getValue());
this.viewBox = null;
}
else
{
this.viewBox = new Rectangle2D.Float(coords[0], coords[1], coords[2], coords[3]);
}
String par = attrs.getValue("preserveAspectRatio");
if (par != null)
{
String[] parList = XMLParseUtil.parseStringList(par);
if (parList[0].equals("none")) { parAlignX = PA_X_NONE; parAlignY = PA_Y_NONE; }
else if (parList[0].equals("xMinYMin")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MIN; }
else if (parList[0].equals("xMidYMin")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MIN; }
else if (parList[0].equals("xMaxYMin")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MIN; }
else if (parList[0].equals("xMinYMid")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MID; }
else if (parList[0].equals("xMidYMid")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MID; }
else if (parList[0].equals("xMaxYMid")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MID; }
else if (parList[0].equals("xMinYMax")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MAX; }
else if (parList[0].equals("xMidYMax")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MAX; }
else if (parList[0].equals("xMaxYMax")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MAX; }
if (parList[1].equals("meet")) parSpecifier = PS_MEET;
else if (parList[1].equals("slice")) parSpecifier = PS_SLICE;
}
build();
}
*/
public void build() throws SVGException
{
super.build();
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("x"))) x = sty.getNumberWithUnits();
if (getPres(sty.setName("y"))) y = sty.getNumberWithUnits();
if (getPres(sty.setName("width"))) width = sty.getNumberWithUnits();
if (getPres(sty.setName("height"))) height = sty.getNumberWithUnits();
if (getPres(sty.setName("viewBox")))
{
float[] coords = sty.getFloatList();
viewBox = new Rectangle2D.Float(coords[0], coords[1], coords[2], coords[3]);
}
if (getPres(sty.setName("preserveAspectRatio")))
{
String preserve = sty.getStringValue();
if (contains(preserve, "none")) { parAlignX = PA_X_NONE; parAlignY = PA_Y_NONE; }
else if (contains(preserve, "xMinYMin")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MIN; }
else if (contains(preserve, "xMidYMin")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MIN; }
else if (contains(preserve, "xMaxYMin")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MIN; }
else if (contains(preserve, "xMinYMid")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MID; }
else if (contains(preserve, "xMidYMid")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MID; }
else if (contains(preserve, "xMaxYMid")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MID; }
else if (contains(preserve, "xMinYMax")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MAX; }
else if (contains(preserve, "xMidYMax")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MAX; }
else if (contains(preserve, "xMaxYMax")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MAX; }
if (contains(preserve, "meet")) parSpecifier = PS_MEET;
else if (contains(preserve, "slice")) parSpecifier = PS_SLICE;
/*
String[] parList = sty.getStringList();
if (parList[0].equals("none")) { parAlignX = PA_X_NONE; parAlignY = PA_Y_NONE; }
else if (parList[0].equals("xMinYMin")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MIN; }
else if (parList[0].equals("xMidYMin")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MIN; }
else if (parList[0].equals("xMaxYMin")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MIN; }
else if (parList[0].equals("xMinYMid")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MID; }
else if (parList[0].equals("xMidYMid")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MID; }
else if (parList[0].equals("xMaxYMid")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MID; }
else if (parList[0].equals("xMinYMax")) { parAlignX = PA_X_MIN; parAlignY = PA_Y_MAX; }
else if (parList[0].equals("xMidYMax")) { parAlignX = PA_X_MID; parAlignY = PA_Y_MAX; }
else if (parList[0].equals("xMaxYMax")) { parAlignX = PA_X_MAX; parAlignY = PA_Y_MAX; }
if (parList[1].equals("meet")) parSpecifier = PS_MEET;
else if (parList[1].equals("slice")) parSpecifier = PS_SLICE;
*/
}
prepareViewport();
}
private boolean contains(String text, String find)
{
return (text.indexOf(find) != -1);
}
protected void prepareViewport()
{
Rectangle deviceViewport = diagram.getDeviceViewport();
Rectangle2D defaultBounds;
try
{
defaultBounds = getBoundingBox();
} catch (SVGException ex)
{
defaultBounds= new Rectangle2D.Float();
}
//Determine destination rectangle
float xx, yy, ww, hh;
if (width != null)
{
xx = (x == null) ? 0 : StyleAttribute.convertUnitsToPixels(x.getUnits(), x.getValue());
if (width.getUnits() == NumberWithUnits.UT_PERCENT)
{
ww = width.getValue() * deviceViewport.width;
}
else
{
ww = StyleAttribute.convertUnitsToPixels(width.getUnits(), width.getValue());
}
// setAttribute("x", AnimationElement.AT_XML, "" + xx);
// setAttribute("width", AnimationElement.AT_XML, "" + ww);
}
else if (viewBox != null)
{
xx = (float)viewBox.x;
ww = (float)viewBox.width;
width = new NumberWithUnits(ww, NumberWithUnits.UT_PX);
x = new NumberWithUnits(xx, NumberWithUnits.UT_PX);
}
else
{
//Estimate size from scene bounding box
xx = (float)defaultBounds.getX();
ww = (float)defaultBounds.getWidth();
width = new NumberWithUnits(ww, NumberWithUnits.UT_PX);
x = new NumberWithUnits(xx, NumberWithUnits.UT_PX);
}
if (height != null)
{
yy = (y == null) ? 0 : StyleAttribute.convertUnitsToPixels(y.getUnits(), y.getValue());
if (height.getUnits() == NumberWithUnits.UT_PERCENT)
{
hh = height.getValue() * deviceViewport.height;
}
else
{
hh = StyleAttribute.convertUnitsToPixels(height.getUnits(), height.getValue());
}
}
else if (viewBox != null)
{
yy = (float)viewBox.y;
hh = (float)viewBox.height;
height = new NumberWithUnits(hh, NumberWithUnits.UT_PX);
y = new NumberWithUnits(yy, NumberWithUnits.UT_PX);
}
else
{
//Estimate size from scene bounding box
yy = (float)defaultBounds.getY();
hh = (float)defaultBounds.getHeight();
height = new NumberWithUnits(hh, NumberWithUnits.UT_PX);
y = new NumberWithUnits(yy, NumberWithUnits.UT_PX);
}
clipRect.setRect(xx, yy, ww, hh);
if (viewBox == null)
{
viewXform.setToIdentity();
}
else
{
viewXform.setToTranslation(clipRect.x, clipRect.y);
viewXform.scale(clipRect.width, clipRect.height);
viewXform.scale(1 / viewBox.width, 1 / viewBox.height);
viewXform.translate(-viewBox.x, -viewBox.y);
}
//For now, treat all preserveAspectRatio as 'none'
// viewXform.setToTranslation(viewBox.x, viewBox.y);
// viewXform.scale(clipRect.width / viewBox.width, clipRect.height / viewBox.height);
// viewXform.translate(-clipRect.x, -clipRect.y);
}
public void render(Graphics2D g) throws SVGException
{
prepareViewport();
AffineTransform cachedXform = g.getTransform();
g.transform(viewXform);
super.render(g);
g.setTransform(cachedXform);
}
public Shape getShape()
{
Shape shape = super.getShape();
return viewXform.createTransformedShape(shape);
}
public Rectangle2D getBoundingBox() throws SVGException
{
Rectangle2D bbox = super.getBoundingBox();
return viewXform.createTransformedShape(bbox).getBounds2D();
}
public float getDeviceWidth()
{
return clipRect.width;
}
public float getDeviceHeight()
{
return clipRect.height;
}
public Rectangle2D getDeviceRect(Rectangle2D rect)
{
rect.setRect(clipRect);
return rect;
}
/**
* 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
{
boolean changeState = super.updateTime(curTime);
StyleAttribute sty = new StyleAttribute();
boolean shapeChange = false;
if (getPres(sty.setName("x")))
{
NumberWithUnits newVal = sty.getNumberWithUnits();
if (!newVal.equals(x))
{
x = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("y")))
{
NumberWithUnits newVal = sty.getNumberWithUnits();
if (!newVal.equals(y))
{
y = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("width")))
{
NumberWithUnits newVal = sty.getNumberWithUnits();
if (!newVal.equals(width))
{
width = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("height")))
{
NumberWithUnits newVal = sty.getNumberWithUnits();
if (!newVal.equals(height))
{
height = newVal;
shapeChange = true;
}
}
if (getPres(sty.setName("viewBox")))
{
float[] coords = sty.getFloatList();
Rectangle2D.Float newViewBox = new Rectangle2D.Float(coords[0], coords[1], coords[2], coords[3]);
if (!newViewBox.equals(viewBox))
{
viewBox = newViewBox;
shapeChange = true;
}
}
if (shapeChange)
{
build();
}
return changeState || shapeChange;
}
}
