/*
* Stop.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, 1:56 AM
*/
package com.kitfox.svg;
import com.kitfox.svg.xml.StyleAttribute;
import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.util.*;
import com.kitfox.svg.xml.*;
import org.xml.sax.*;
//import org.apache.batik.ext.awt.geom.ExtendedGeneralPath;
/**
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class Tspan extends ShapeElement {
float[] x = null;
float[] y = null;
float[] dx = null;
float[] dy = null;
float[] rotate = null;
private String text = "";
float cursorX;
float cursorY;
// Shape tspanShape;
/** Creates a new instance of Stop */
public Tspan() {
}
public float getCursorX() { return cursorX; }
public float getCursorY() { return cursorY; }
public void setCursorX(float cursorX)
{
this.cursorX = cursorX;
}
public void setCursorY(float cursorY)
{
this.cursorY = cursorY;
}
/*
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 dx = attrs.getValue("dx");
String dy = attrs.getValue("dy");
String rotate = attrs.getValue("rotate");
if (x != null) this.x = XMLParseUtil.parseFloatList(x);
if (y != null) this.y = XMLParseUtil.parseFloatList(y);
if (dx != null) this.dx = XMLParseUtil.parseFloatList(dx);
if (dy != null) this.dy = XMLParseUtil.parseFloatList(dy);
if (rotate != null)
{
this.rotate = XMLParseUtil.parseFloatList(rotate);
for (int i = 0; i < this.rotate.length; i++)
this.rotate[i] = (float)Math.toRadians(this.rotate[i]);
}
}
*/
/**
* Called during load process to add text scanned within a tag
*/
public void loaderAddText(SVGLoaderHelper helper, String text)
{
this.text += text;
}
protected void build() throws SVGException
{
super.build();
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("x"))) x = sty.getFloatList();
if (getPres(sty.setName("y"))) y = sty.getFloatList();
if (getPres(sty.setName("dx"))) dx = sty.getFloatList();
if (getPres(sty.setName("dy"))) dy = sty.getFloatList();
if (getPres(sty.setName("rotate")))
{
rotate = sty.getFloatList();
for (int i = 0; i < this.rotate.length; i++)
{
rotate[i] = (float)Math.toRadians(this.rotate[i]);
}
}
}
public void addShape(GeneralPath addShape) throws SVGException
{
if (x != null)
{
cursorX = x[0];
cursorY = y[0];
}
else if (dx != null)
{
cursorX += dx[0];
cursorY += dy[0];
}
StyleAttribute sty = new StyleAttribute();
String fontFamily = null;
if (getStyle(sty.setName("font-family")))
{
fontFamily = sty.getStringValue();
}
float fontSize = 12f;
if (getStyle(sty.setName("font-size")))
{
fontSize = sty.getFloatValueWithUnits();
}
//Get font
Font font = diagram.getUniverse().getFont(fontFamily);
if (font == null)
{
addShapeSysFont(addShape, font, fontFamily, fontSize);
return;
}
FontFace fontFace = font.getFontFace();
int ascent = fontFace.getAscent();
float fontScale = fontSize / (float)ascent;
AffineTransform xform = new AffineTransform();
strokeWidthScalar = 1f / fontScale;
int posPtr = 1;
for (int i = 0; i < text.length(); i++)
{
xform.setToIdentity();
xform.setToTranslation(cursorX, cursorY);
xform.scale(fontScale, fontScale);
if (rotate != null) xform.rotate(rotate[posPtr]);
String unicode = text.substring(i, i + 1);
MissingGlyph glyph = font.getGlyph(unicode);
Shape path = glyph.getPath();
if (path != null)
{
path = xform.createTransformedShape(path);
addShape.append(path, false);
}
if (x != null && posPtr < x.length)
{
cursorX = x[posPtr];
cursorY = y[posPtr++];
}
else if (dx != null && posPtr < dx.length)
{
cursorX += dx[posPtr];
cursorY += dy[posPtr++];
}
cursorX += fontScale * glyph.getHorizAdvX();
}
strokeWidthScalar = 1f;
}
private void addShapeSysFont(GeneralPath addShape, Font font, String fontFamily, float fontSize)
{
java.awt.Font sysFont = new java.awt.Font(fontFamily, java.awt.Font.PLAIN, (int)fontSize);
FontRenderContext frc = new FontRenderContext(null, true, true);
GlyphVector textVector = sysFont.createGlyphVector(frc, text);
AffineTransform xform = new AffineTransform();
int posPtr = 1;
for (int i = 0; i < text.length(); i++)
{
xform.setToIdentity();
xform.setToTranslation(cursorX, cursorY);
if (rotate != null) xform.rotate(rotate[Math.min(i, rotate.length - 1)]);
String unicode = text.substring(i, i + 1);
Shape glyphOutline = textVector.getGlyphOutline(i);
GlyphMetrics glyphMetrics = textVector.getGlyphMetrics(i);
glyphOutline = xform.createTransformedShape(glyphOutline);
addShape.append(glyphOutline, false);
if (x != null && posPtr < x.length)
{
cursorX = x[posPtr];
cursorY = y[posPtr++];
}
else if (dx != null && posPtr < dx.length)
{
cursorX += dx[posPtr];
cursorY += dy[posPtr++];
}
}
}
public void render(Graphics2D g) throws SVGException
{
if (x != null)
{
cursorX = x[0];
cursorY = y[0];
}
else if (dx != null)
{
cursorX += dx[0];
cursorY += dy[0];
}
StyleAttribute sty = new StyleAttribute();
String fontFamily = null;
if (getPres(sty.setName("font-family")))
{
fontFamily = sty.getStringValue();
}
float fontSize = 12f;
if (getPres(sty.setName("font-size")))
{
fontSize = sty.getFloatValueWithUnits();
}
//Get font
Font font = diagram.getUniverse().getFont(fontFamily);
if (font == null)
{
System.err.println("Could not load font");
java.awt.Font sysFont = new java.awt.Font(fontFamily, java.awt.Font.PLAIN, (int)fontSize);
renderSysFont(g, sysFont);
return;
}
FontFace fontFace = font.getFontFace();
int ascent = fontFace.getAscent();
float fontScale = fontSize / (float)ascent;
AffineTransform oldXform = g.getTransform();
AffineTransform xform = new AffineTransform();
strokeWidthScalar = 1f / fontScale;
int posPtr = 1;
for (int i = 0; i < text.length(); i++)
{
xform.setToTranslation(cursorX, cursorY);
xform.scale(fontScale, fontScale);
g.transform(xform);
String unicode = text.substring(i, i + 1);
MissingGlyph glyph = font.getGlyph(unicode);
Shape path = glyph.getPath();
if (path != null)
{
renderShape(g, path);
}
else glyph.render(g);
if (x != null && posPtr < x.length)
{
cursorX = x[posPtr];
cursorY = y[posPtr++];
}
else if (dx != null && posPtr < dx.length)
{
cursorX += dx[posPtr];
cursorY += dy[posPtr++];
}
cursorX += fontScale * glyph.getHorizAdvX();
g.setTransform(oldXform);
}
strokeWidthScalar = 1f;
}
protected void renderSysFont(Graphics2D g, java.awt.Font font) throws SVGException
{
int posPtr = 1;
FontRenderContext frc = g.getFontRenderContext();
Shape textShape = font.createGlyphVector(frc, text).getOutline(cursorX, cursorY);
renderShape(g, textShape);
Rectangle2D rect = font.getStringBounds(text, frc);
cursorX += (float)rect.getWidth();
}
public Shape getShape()
{
return null;
//return shapeToParent(tspanShape);
}
public Rectangle2D getBoundingBox()
{
return null;
//return boundsToParent(tspanShape.getBounds2D());
}
/**
* 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
{
//Tspan does not change
return false;
}
public String getText()
{
return text;
}
public void setText(String text)
{
this.text = text;
}
}
