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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 mark@kitfox.com. 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.xml.StyleAttribute;
import com.kitfox.svg.xml.*;
import org.xml.sax.*;
import java.util.*;
/**
* Implements an embedded font.
*
* SVG specification: http://www.w3.org/TR/SVG/fonts.html
*
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class Font extends SVGElement
{
int horizOriginX = 0;
int horizOriginY = 0;
int horizAdvX = -1; //Must be specified
int vertOriginX = -1; //Defaults to horizAdvX / 2
int vertOriginY = -1; //Defaults to font's ascent
int vertAdvY = -1; //Defaults to one 'em'. See font-face
FontFace fontFace = null;
MissingGlyph missingGlyph = null;
final HashMap glyphs = new HashMap();
/** Creates a new instance of Font */
public Font()
{
}
/*
public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
{
//Load style string
super.loaderStartElement(helper, attrs, parent);
String horizOriginX = attrs.getValue("horiz-origin-x");
String horizOriginY = attrs.getValue("horiz-origin-y");
String horizAdvX = attrs.getValue("horiz-adv-x");
String vertOriginX = attrs.getValue("vert-origin-x");
String vertOriginY = attrs.getValue("vert-origin-y");
String vertAdvY = attrs.getValue("vert-adv-y");
if (horizOriginX != null) this.horizOriginX = XMLParseUtil.parseInt(horizOriginX);
if (horizOriginY != null) this.horizOriginY = XMLParseUtil.parseInt(horizOriginY);
if (horizAdvX != null) this.horizAdvX = XMLParseUtil.parseInt(horizAdvX);
if (vertOriginX != null) this.vertOriginX = XMLParseUtil.parseInt(vertOriginX);
if (vertOriginY != null) this.vertOriginY = XMLParseUtil.parseInt(vertOriginY);
if (vertAdvY != null) this.vertAdvY = XMLParseUtil.parseInt(vertAdvY);
}
*/
/**
* Called after the start element but before the end element to indicate
* each child tag that has been processed
*/
public void loaderAddChild(SVGLoaderHelper helper, SVGElement child) throws SVGElementException
{
super.loaderAddChild(helper, child);
if (child instanceof Glyph)
{
glyphs.put(((Glyph)child).getUnicode(), child);
}
else if (child instanceof MissingGlyph)
{
missingGlyph = (MissingGlyph)child;
}
else if (child instanceof FontFace)
{
fontFace = (FontFace)child;
}
}
public void loaderEndElement(SVGLoaderHelper helper) throws SVGParseException
{
super.loaderEndElement(helper);
//build();
helper.universe.registerFont(this);
}
protected void build() throws SVGException
{
super.build();
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("horiz-origin-x"))) horizOriginX = sty.getIntValue();
if (getPres(sty.setName("horiz-origin-y"))) horizOriginY = sty.getIntValue();
if (getPres(sty.setName("horiz-adv-x"))) horizAdvX = sty.getIntValue();
if (getPres(sty.setName("vert-origin-x"))) vertOriginX = sty.getIntValue();
if (getPres(sty.setName("vert-origin-y"))) vertOriginY = sty.getIntValue();
if (getPres(sty.setName("vert-adv-y"))) vertAdvY = sty.getIntValue();
}
public FontFace getFontFace() { return fontFace; }
public MissingGlyph getGlyph(String unicode)
{
Glyph retVal = (Glyph)glyphs.get(unicode);
if (retVal == null) return missingGlyph;
return retVal;
}
public int getHorizOriginX() { return horizOriginX; }
public int getHorizOriginY() { return horizOriginY; }
public int getHorizAdvX() { return horizAdvX; }
public int getVertOriginX()
{
if (vertOriginX != -1) return vertOriginX;
vertOriginX = getHorizAdvX() / 2;
return vertOriginX;
}
public int getVertOriginY()
{
if (vertOriginY != -1) return vertOriginY;
vertOriginY = fontFace.getAscent();
return vertOriginY;
}
public int getVertAdvY()
{
if (vertAdvY != -1) return vertAdvY;
vertAdvY = fontFace.getUnitsPerEm();
return vertAdvY;
}
/**
* 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
{
//Fonts can't change
return false;
/*
if (trackManager.getNumTracks() == 0) return false;
//Get current values for parameters
StyleAttribute sty = new StyleAttribute();
boolean stateChange = false;
if (getPres(sty.setName("horiz-origin-x")))
{
int newVal = sty.getIntValue();
if (newVal != horizOriginX)
{
horizOriginX = newVal;
stateChange = true;
}
}
if (getPres(sty.setName("horiz-origin-y")))
{
int newVal = sty.getIntValue();
if (newVal != horizOriginY)
{
horizOriginY = newVal;
stateChange = true;
}
}
if (getPres(sty.setName("horiz-adv-x")))
{
int newVal = sty.getIntValue();
if (newVal != horizAdvX)
{
horizAdvX = newVal;
stateChange = true;
}
}
if (getPres(sty.setName("vert-origin-x")))
{
int newVal = sty.getIntValue();
if (newVal != vertOriginX)
{
vertOriginX = newVal;
stateChange = true;
}
}
if (getPres(sty.setName("vert-origin-y")))
{
int newVal = sty.getIntValue();
if (newVal != vertOriginY)
{
vertOriginY = newVal;
stateChange = true;
}
}
if (getPres(sty.setName("vert-adv-y")))
{
int newVal = sty.getIntValue();
if (newVal != vertAdvY)
{
vertAdvY = newVal;
stateChange = true;
}
}
return shapeChange;
*/
}
}
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