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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.svg.font;
import java.awt.font.FontRenderContext;
import java.text.CharacterIterator;
import java.text.StringCharacterIterator;
import org.apache.batik.gvt.font.GVTFont;
import org.apache.batik.gvt.font.GVTFontFamily;
import org.apache.batik.gvt.font.GVTGlyphVector;
import org.apache.batik.gvt.font.GVTLineMetrics;
import org.apache.fop.fonts.Font;
import org.apache.fop.fonts.FontMetrics;
public class FOPGVTFont implements GVTFont {
private final Font font;
private final GVTFontFamily fontFamily;
public FOPGVTFont(Font font, GVTFontFamily fontFamily) {
this.font = font;
this.fontFamily = fontFamily;
}
public Font getFont() {
return font;
}
public boolean canDisplay(char c) {
return font.hasChar(c);
}
public int canDisplayUpTo(char[] text, int start, int limit) {
for (int i = start; i < limit; i++) {
if (!canDisplay(text[i])) {
return i;
}
}
return -1;
}
public int canDisplayUpTo(CharacterIterator iter, int start, int limit) {
for (char c = iter.setIndex(start); iter.getIndex() < limit; c = iter.next()) {
if (!canDisplay(c)) {
return iter.getIndex();
}
}
return -1;
}
public int canDisplayUpTo(String str) {
for (int i = 0; i < str.length(); i++) {
if (!canDisplay(str.charAt(i))) {
return i;
}
}
return -1;
}
public GVTGlyphVector createGlyphVector(FontRenderContext frc, char[] chars) {
return createGlyphVector(frc, new String(chars));
}
public GVTGlyphVector createGlyphVector(FontRenderContext frc, CharacterIterator ci) {
// TODO Batik does manual glyph shaping for Arabic. Replace with complex scripts implementation
return new FOPGVTGlyphVector(this, ci, frc);
}
public GVTGlyphVector createGlyphVector(FontRenderContext frc,
int[] glyphCodes,
CharacterIterator ci) {
throw new UnsupportedOperationException("Not implemented");
}
public GVTGlyphVector createGlyphVector(FontRenderContext frc, String str) {
StringCharacterIterator sci = new StringCharacterIterator(str);
return createGlyphVector(frc, sci);
}
public FOPGVTFont deriveFont(float size) {
throw new UnsupportedOperationException("Not implemented");
}
public String getFamilyName() {
return fontFamily.getFamilyName();
}
public GVTLineMetrics getLineMetrics(char[] chars, int beginIndex, int limit, FontRenderContext frc) {
return getLineMetrics(limit - beginIndex);
}
GVTLineMetrics getLineMetrics(int numChars) {
numChars = numChars < 0 ? 0 : numChars;
FontMetrics metrics = font.getFontMetrics();
int size = font.getFontSize();
return new GVTLineMetrics(
metrics.getCapHeight(size) / 1000000f,
java.awt.Font.ROMAN_BASELINE, // Not actually used by Batik
null, // Not actually used by Batik
-metrics.getDescender(size) / 1000000f,
0, // Not actually used by Batik
0, // Not actually used by Batik
numChars,
-metrics.getStrikeoutPosition(size) / 1000000f,
metrics.getStrikeoutThickness(size) / 1000000f,
-metrics.getUnderlinePosition(size) / 1000000f,
metrics.getUnderlineThickness(size) / 1000000f,
-metrics.getCapHeight(size) / 1000000f, // Because this is what Batik does in GVTLineMetrics
metrics.getUnderlineThickness(size) / 1000000f);
}
public GVTLineMetrics getLineMetrics(CharacterIterator ci, int beginIndex, int limit,
FontRenderContext frc) {
return getLineMetrics(limit - beginIndex);
}
public GVTLineMetrics getLineMetrics(String str, FontRenderContext frc) {
return getLineMetrics(str.length());
}
public GVTLineMetrics getLineMetrics(String str, int beginIndex, int limit, FontRenderContext frc) {
return getLineMetrics(limit - beginIndex);
}
public float getSize() {
return font.getFontSize() / 1000f;
}
public float getVKern(int glyphCode1, int glyphCode2) {
return 0;
}
public float getHKern(int glyphCode1, int glyphCode2) {
// TODO Cannot be implemented until getKernValue takes glyph indices instead of character codes
return 0;
}
}
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