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/*
============================================================================
The Apache Software License, Version 1.1
============================================================================
Copyright (C) 1999 The Apache Software Foundation. All rights reserved.
Redistribution and use in source and binary forms, with or without modifica-
tion, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. The end-user documentation included with the redistribution, if any, must
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.
4. The names "Fop" and "Apache Software Foundation" must not be used to
endorse or promote products derived from this software without prior
written permission. For written permission, please contact
apache@apache.org.
5. Products derived from this software may not be called "Apache", nor may
"Apache" appear in their name, without prior written permission of the
Apache Software Foundation.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.apache.fop.render.awt;
//FOP
import org.apache.fop.messaging.MessageHandler;
import org.apache.fop.layout.FontInfo;
import org.apache.fop.layout.FontDescriptor;
import org.apache.fop.layout.FontState;
// Java
import java.util.Enumeration;
import java.util.Hashtable;
import java.awt.Component;
import java.awt.Font;
/**
* This class implements org.apache.fop.layout.FontMetric and
* is added to the hash table in FontInfo. It deferes the
* actual calculation of the metrics to
* AWTFontMetrics. It only keeps the java name and
* style as member varibles
*/
public class FontMetricsMapper implements org.apache.fop.layout.FontMetric {
/**
* The first and last non space-character
*/
private final static int FIRST_CHAR = 32;
private final static int LAST_CHAR = 255;
/**
* This is a AWTFontMetrics that does the real calculation.
* It is only one class that dynamically determines the font-size.
*/
private static AWTFontMetrics metric = null;
/**
* The java name of the font.
# Make the family name immutable.
*/
private final String family;
/**
* The java style of the font.
# Make the style immutable.
*/
private final int style;
/**
* Constructs a new Font-metrics.
* @param family the family name of the font (java value)
* @param style the java type style value of the font
* @param parent an AWT component - this is needed so
* that we can get an instance of
* java.awt.FontMetrics
*/
public FontMetricsMapper(String family, int style, Component parent) {
this.family = family;
this.style = style;
if (metric == null)
metric = new AWTFontMetrics(parent);
}
/**
* Determines the font ascent of the Font described by this
* FontMetrics object
* @return ascent in milliponts
*/
public int getAscender(int size) {
return metric.getAscender(family, style, size);
}
/**
* The size of a capital letter measured from the font's baseline
*/
public int getCapHeight(int size) {
return metric.getCapHeight(family, style, size);
}
/**
* Determines the font descent of the Font described by this
* FontMetrics object
* @return descent in milliponts
*/
public int getDescender(int size) {
return metric.getDescender(family, style, size);
}
/**
* Determines the typical font height of this
* FontMetrics object
* @return font height in milliponts
*/
public int getXHeight(int size) {
return metric.getXHeight(family, style, size);
}
public int getFirstChar() {
return FIRST_CHAR;
}
public int getLastChar() {
return LAST_CHAR;
}
/**
* return width (in 1/1000ths of point size) of character at
* code point i.
*/
public int width(int i, int size) {
return metric.width(i, family, style, size);
}
/**
* return width (in 1/1000ths of point size) of all character
*/
public int[] getWidths(int size) {
return metric.getWidths(family, style, size);
}
/**
* Gets a Font instance of the Font that this
* FontMetrics describes in the desired size.
* @return font with the desired characeristics.
*/
public Font getFont(int size) {
return metric.getFont(family, style, size);
}
}
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