org.jpedal.fonts.tt.Glyf Maven / Gradle / Ivy
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/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/java-pdf-library-support/
*
* (C) Copyright 1997-2013, IDRsolutions and Contributors.
*
* This file is part of JPedal
*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* ---------------
* Glyf.java
* ---------------
*/
package org.jpedal.fonts.tt;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
public class Glyf extends Table {
private static final long serialVersionUID = -1163555956748847206L;
/** holds mappings for drawing the glpyhs */
private Map charStrings = new HashMap();
private int glyfCount = 0;
/** holds list of empty glyphs */
private Map emptyCharStrings = new HashMap();
private byte[] glyphTable;
public Glyf(FontFile2 currentFontFile, int glyphCount, int[] glyphIndexStart) {
// save so we can access
this.glyfCount = glyphCount;
// move to start and check exists
int startPointer = currentFontFile.selectTable(FontFile2.LOCA);
// read table
if (startPointer != 0) {
// read each gyf
for (int i = 0; i < glyphCount; i++) {
// just store in lookup table or flag as zero length
if ((glyphIndexStart[i] == glyphIndexStart[i + 1])) {
this.charStrings.put(i, -1);
this.emptyCharStrings.put(i, "x");
}
else {
this.charStrings.put(i, glyphIndexStart[i]);
}
}
// read the actual glyph data
this.glyphTable = currentFontFile.getTableBytes(FontFile2.GLYF);
}
}
public boolean isPresent(int glyph) {
Integer key = glyph;
Object value = this.charStrings.get(key);
return value != null && this.emptyCharStrings.get(key) == null;
}
public int getCharString(int glyph) {
Object value = this.charStrings.get(glyph);
if (value == null) return glyph;
else return (Integer) value;
}
public byte[] getTableData() {
return this.glyphTable;
}
public int getGlypfCount() {
return this.glyfCount;
}
/** assume identify and build data needed for our OTF converter */
public Map buildCharStringTable(int enc) {
Map returnStrings = new HashMap();
for (Object key : this.charStrings.keySet()) {
if (!this.emptyCharStrings.containsKey(key)) {
returnStrings.put(key, key);
}
}
return returnStrings;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("Glyf [");
if (charStrings != null) {
builder.append("charStrings=");
builder.append(charStrings);
builder.append(", ");
}
builder.append("glyfCount=");
builder.append(glyfCount);
builder.append(", ");
if (emptyCharStrings != null) {
builder.append("emptyCharStrings=");
builder.append(emptyCharStrings);
builder.append(", ");
}
if (glyphTable != null) {
builder.append("glyphTable=");
builder.append(new String(glyphTable));
}
builder.append("]");
return builder.toString();
}
}