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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;
import org.apache.fop.fonts.Font;
import org.apache.fop.fonts.FontInfo;
import org.apache.fop.fonts.Typeface;
/**
* Utility class for generating PDF text objects. It needs to be subclassed to add writing
* functionality (see {@link #write(String)}).
*/
public abstract class PDFTextUtil extends org.apache.fop.pdf.PDFTextUtil {
private FontInfo fontInfo;
private Font[] fonts;
private Font font;
/**
* Main constructor.
* @param fontInfo the font catalog
*/
public PDFTextUtil(FontInfo fontInfo) {
super();
this.fontInfo = fontInfo;
}
/** {@inheritDoc} */
protected void initValues() {
super.initValues();
this.font = null;
}
/**
* Sets the current fonts for the text object. For every character, the suitable font will
* be selected.
* @param fonts the new fonts
*/
public void setFonts(Font[] fonts) {
this.fonts = fonts;
}
/**
* Sets the current font for the text object.
* @param font the new font
*/
public void setFont(Font font) {
setFonts(new Font[] {font});
}
/**
* Returns the current font in use.
* @return the current font or null if no font is currently active.
*/
public Font getCurrentFont() {
return this.font;
}
/**
* Sets the current font.
* @param f the new font to use
*/
public void setCurrentFont(Font f) {
this.font = f;
}
/**
* Determines whether the font with the given name is a multi-byte font.
* @param name the name of the font
* @return true if it's a multi-byte font
*/
protected boolean isMultiByteFont(String name) {
Typeface f = (Typeface)fontInfo.getFonts().get(name);
return f.isMultiByte();
}
/**
* Writes a "Tf" command, setting a new current font.
* @param f the font to select
*/
public void writeTf(Font f) {
String fontName = f.getFontName();
float fontSize = (float)f.getFontSize() / 1000f;
updateTf(fontName, fontSize, isMultiByteFont(fontName));
}
/**
* Selects a font from the font list suitable to display the given character.
* @param ch the character
* @return the recommended Font to use
*/
public Font selectFontForChar(char ch) {
for (int i = 0, c = fonts.length; i < c; i++) {
if (fonts[i].hasChar(ch)) {
return fonts[i];
}
}
return fonts[0]; //TODO Maybe fall back to painting with shapes
}
/**
* Writes a char to the "TJ-Buffer".
* @param ch the unmapped character
*/
public void writeTJChar(char ch) {
char mappedChar = font.mapChar(ch);
writeTJMappedChar(mappedChar);
}
}
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