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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.render.java2d;
// Java
import java.awt.Graphics2D;
import java.util.Map;
import java.util.Set;
import org.apache.fop.fonts.FontType;
import org.apache.fop.fonts.Typeface;
/**
* This class implements org.apache.fop.layout.FontMetrics and
* is added to the hash table in FontInfo. It deferes the
* actual calculation of the metrics to
* Java2DFontMetrics. It only keeps the java name and
* style as member varibles
*/
public class SystemFontMetricsMapper extends Typeface implements FontMetricsMapper {
/**
* This is a Java2DFontMetrics that does the real calculation.
* It is only one class that dynamically determines the font-size.
*/
private static Java2DFontMetrics 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 graphics a Graphics2D object - this is needed so
* that we can get an instance of java.awt.FontMetrics
*/
public SystemFontMetricsMapper(String family, int style, Graphics2D graphics) {
this.family = family;
this.style = style;
if (metric == null) {
metric = new Java2DFontMetrics(graphics);
}
}
/** {@inheritDoc} */
public String getFontName() {
return family;
}
/** {@inheritDoc} */
public String getEmbedFontName() {
return getFontName();
}
/** {@inheritDoc} */
public String getFullName() {
return getFontName();
}
/** {@inheritDoc} */
public Set getFamilyNames() {
Set s = new java.util.HashSet();
s.add(this.family);
return s;
}
/**
* {@inheritDoc}
*/
public FontType getFontType() {
return FontType.OTHER;
}
/**
* {@inheritDoc}
*/
public int getMaxAscent(int size) {
return metric.getMaxAscent(family, style, size);
}
/**
* {@inheritDoc}
*/
public int getAscender(int size) {
return metric.getAscender(family, style, size);
}
/**
* {@inheritDoc}
*/
public int getCapHeight(int size) {
return metric.getCapHeight(family, style, size);
}
/**
* {@inheritDoc}
*/
public int getDescender(int size) {
return metric.getDescender(family, style, size);
}
/**
* {@inheritDoc}
*/
public int getXHeight(int size) {
return metric.getXHeight(family, style, size);
}
/**
* {@inheritDoc}
*/
public int getWidth(int i, int size) {
return metric.width(i, family, style, size);
}
/**
* {@inheritDoc}
*/
public int[] getWidths() {
return metric.getWidths(family, style, Java2DFontMetrics.FONT_SIZE);
}
/**
* {@inheritDoc}
*/
public java.awt.Font getFont(int size) {
return metric.getFont(family, style, size);
}
/**
* {@inheritDoc}
*/
public Map getKerningInfo() {
return java.util.Collections.EMPTY_MAP;
}
/**
* {@inheritDoc}
*/
public boolean hasKerningInfo() {
return false;
}
/** {@inheritDoc} */
public String getEncoding() {
return null; //Not applicable to Java2D rendering
}
/** {@inheritDoc} */
public char mapChar(char c) {
return c;
}
/** {@inheritDoc} */
public boolean hasChar(char c) {
return metric.hasChar(family, style, Java2DFontMetrics.FONT_SIZE, c);
}
}
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