fop/src/org/apache/fop/layout/FontState.java

/*-- $Id$ --

 ============================================================================
									 The Apache Software License, Version 1.1
 ============================================================================

		Copyright (C) 1999 The Apache Software Foundation. All rights reserved.

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		this list of conditions and the following disclaimer.

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		this list of conditions and the following disclaimer in the documentation
		and/or other materials provided with the distribution.

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		include  the following  acknowledgment:  "This product includes  software
		developed  by the  Apache Software Foundation  (http://www.apache.org/)."
		Alternately, this  acknowledgment may  appear in the software itself,  if
		and wherever such third-party acknowledgments normally appear.

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 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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 APACHE SOFTWARE  FOUNDATION  OR ITS CONTRIBUTORS  BE LIABLE FOR  ANY DIRECT,
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 This software  consists of voluntary contributions made  by many individuals
 on  behalf of the Apache Software  Foundation and was  originally created by
 James Tauber <jtauber@jtauber.com>. For more  information on the Apache
 Software Foundation, please see <http://www.apache.org/>.

 */
package org.apache.fop.layout;

import org.apache.fop.apps.FOPException;
import org.apache.fop.fo.properties.FontVariant;

public class FontState {
    
    protected FontInfo fontInfo;
    private String fontName;
    private int fontSize;
    private String fontFamily;
    private String fontStyle;
    private String fontWeight;
    private FontMetric metric;
    private int fontVariant;
    
    public FontState(FontInfo fontInfo, String fontFamily, String fontStyle, String fontWeight, int fontSize, int fontVariant) throws FOPException {
	this.fontInfo = fontInfo;
	this.fontFamily = fontFamily;
	this.fontStyle = fontStyle;
	this.fontWeight = fontWeight;
	this.fontSize = fontSize;
	this.fontName = fontInfo.fontLookup(fontFamily,fontStyle,fontWeight);
	this.metric = fontInfo.getMetricsFor(fontName);
	this.fontVariant = fontVariant;
    }
    
    public int getAscender() {
	return  metric.getAscender(fontSize) / 1000;
    }
    
    public int getCapHeight() {
	return metric.getCapHeight(fontSize) / 1000;
    }
    
    public int getDescender() {
	return metric.getDescender(fontSize) / 1000;
    }
    
    public String getFontName() {
	return this.fontName;
    }
    
    public int getFontSize() {
	return this.fontSize;
    }
    
    public String getFontWeight() {
	return this.fontWeight;
    }
    
    public String getFontFamily() {
	return this.fontFamily;
    }
    
    public String getFontStyle() {
	return this.fontStyle;
    }
    
    public int getFontVariant() {
	return this.fontVariant;
    }
    
    public FontInfo getFontInfo() {
	return this.fontInfo;
    }
    
    public int getXHeight() {
	return metric.getXHeight(fontSize) / 1000;
    }
    
    public java.util.Hashtable getKerning() {
        java.util.Hashtable ret=new java.util.Hashtable();
        try {
            FontMetric fm=fontInfo.getMetricsFor(fontFamily, fontStyle,
                                                 fontWeight);
            if (fm instanceof org.apache.fop.layout.FontDescriptor) {
                org.apache.fop.layout.FontDescriptor fdes=
                    (org.apache.fop.layout.FontDescriptor)fm;
                ret=fdes.getKerningInfo();
            }
        } catch (Exception e) {}
        return ret;
    }
    
    public int width(int charnum) {
            // returns width of given character number in millipoints
	return (metric.width(charnum, fontSize) / 1000);
    }
    
        /**
         * Map a java character (unicode) to a font character
         * Default uses CodePointMapping
         */
    public char mapChar(char c) {
        try {
            FontMetric fm=fontInfo.getMetricsFor(fontFamily, fontStyle,
                                                 fontWeight);
            if (fm instanceof org.apache.fop.render.pdf.Font) {
                org.apache.fop.render.pdf.Font f=
                    (org.apache.fop.render.pdf.Font)fm;
                return f.mapChar(c);
            }
        } catch (Exception e) {}

            // Use default CodePointMapping
        if (c > 127) {
            char d = org.apache.fop.render.pdf.CodePointMapping.map[c];
            if (d != 0) {
                c = d;
            } else {
                c = '#';
            }
        }
        
        return c;
    }
}