/*******************************************************************************
* Copyright 2011 See AUTHORS file.
*
* Licensed 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.
******************************************************************************/
package com.badlogic.gdx.tools.hiero;
import java.awt.Font;
import java.awt.Rectangle;
import java.awt.font.GlyphVector;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.nio.IntBuffer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import javax.imageio.ImageIO;
import org.lwjgl.BufferUtils;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL12;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.tools.hiero.unicodefont.Glyph;
import com.badlogic.gdx.tools.hiero.unicodefont.GlyphPage;
import com.badlogic.gdx.tools.hiero.unicodefont.UnicodeFont;
import com.badlogic.gdx.utils.IntIntMap;
/** @author Nathan Sweet */
public class BMFontUtil {
private final UnicodeFont unicodeFont;
public BMFontUtil (UnicodeFont unicodeFont) {
this.unicodeFont = unicodeFont;
}
public void save (File outputBMFontFile) throws IOException {
File outputDir = outputBMFontFile.getParentFile();
String outputName = outputBMFontFile.getName();
if (outputName.endsWith(".fnt")) outputName = outputName.substring(0, outputName.length() - 4);
// Always include space and the missing gyph.
getGlyph(' ');
getGlyph('\u0000');
unicodeFont.loadGlyphs();
PrintStream out = new PrintStream(new FileOutputStream(new File(outputDir, outputName + ".fnt")));
Font font = unicodeFont.getFont();
int pageWidth = unicodeFont.getGlyphPageWidth();
int pageHeight = unicodeFont.getGlyphPageHeight();
out.println("info face=\"" + font.getFontName() + "\" size=" + font.getSize() + " bold=" + (font.isBold() ? 1 : 0)
+ " italic=" + (font.isItalic() ? 1 : 0) + " charset=\"\" unicode=0 stretchH=100 smooth=1 aa=1 padding="
+ unicodeFont.getPaddingTop() + "," + unicodeFont.getPaddingRight() + "," + unicodeFont.getPaddingBottom() + ","
+ unicodeFont.getPaddingLeft() + " spacing=" + unicodeFont.getPaddingAdvanceX() + ","
+ unicodeFont.getPaddingAdvanceY());
out.println("common lineHeight=" + unicodeFont.getLineHeight() + " base=" + unicodeFont.getAscent() + " scaleW=" + pageWidth
+ " scaleH=" + pageHeight + " pages=" + unicodeFont.getGlyphPages().size() + " packed=0");
int pageIndex = 0, glyphCount = 0;
for (Iterator pageIter = unicodeFont.getGlyphPages().iterator(); pageIter.hasNext();) {
GlyphPage page = (GlyphPage)pageIter.next();
String fileName;
if (pageIndex == 0 && !pageIter.hasNext())
fileName = outputName + ".png";
else
fileName = outputName + (pageIndex + 1) + ".png";
out.println("page id=" + pageIndex + " file=\"" + fileName + "\"");
glyphCount += page.getGlyphs().size();
pageIndex++;
}
out.println("chars count=" + glyphCount);
pageIndex = 0;
List allGlyphs = new ArrayList(512);
for (Iterator pageIter = unicodeFont.getGlyphPages().iterator(); pageIter.hasNext();) {
GlyphPage page = (GlyphPage)pageIter.next();
List<Glyph> glyphs = page.getGlyphs();
Collections.sort(glyphs, new Comparator<Glyph>() {
public int compare (Glyph o1, Glyph o2) {
return o1.getCodePoint() - o2.getCodePoint();
}
});
for (Iterator glyphIter = page.getGlyphs().iterator(); glyphIter.hasNext();) {
Glyph glyph = (Glyph)glyphIter.next();
writeGlyph(out, pageWidth, pageHeight, pageIndex, glyph);
}
allGlyphs.addAll(page.getGlyphs());
pageIndex++;
}
String ttfFileRef = unicodeFont.getFontFile();
if (ttfFileRef == null)
System.out.println("Kerning information could not be output because a TTF font file was not specified.");
else {
Kerning kerning = new Kerning();
try {
kerning.load(Gdx.files.internal(ttfFileRef).read(), font.getSize());
} catch (IOException ex) {
System.out.println("Unable to read kerning information from font: " + ttfFileRef);
ex.printStackTrace();
}
IntIntMap glyphCodeToCodePoint = new IntIntMap();
for (Iterator iter = allGlyphs.iterator(); iter.hasNext();) {
Glyph glyph = (Glyph)iter.next();
glyphCodeToCodePoint.put(new Integer(getGlyphCode(font, glyph.getCodePoint())), new Integer(glyph.getCodePoint()));
}
List kernings = new ArrayList(256);
class KerningPair {
public int firstCodePoint, secondCodePoint, offset;
}
for (IntIntMap.Entry entry : kerning.getKernings()) {
int firstGlyphCode = entry.key >> 16;
int secondGlyphCode = entry.key & 0xffff;
int offset = entry.value;
int firstCodePoint = glyphCodeToCodePoint.get(firstGlyphCode, -1);
int secondCodePoint = glyphCodeToCodePoint.get(secondGlyphCode, -1);
if (firstCodePoint == -1 || secondCodePoint == -1 || offset == 0) {
// We are not outputting one or both of these glyphs, or the offset is zero anyway.
continue;
}
KerningPair pair = new KerningPair();
pair.firstCodePoint = firstCodePoint;
pair.secondCodePoint = secondCodePoint;
pair.offset = offset;
kernings.add(pair);
}
out.println("kernings count=" + kernings.size());
for (Iterator iter = kernings.iterator(); iter.hasNext();) {
KerningPair pair = (KerningPair)iter.next();
out.println("kerning first=" + pair.firstCodePoint + " second=" + pair.secondCodePoint + " amount=" + pair.offset);
}
}
out.close();
int width = unicodeFont.getGlyphPageWidth();
int height = unicodeFont.getGlyphPageHeight();
IntBuffer buffer = BufferUtils.createIntBuffer(width * height);
BufferedImage pageImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
int[] row = new int[width];
pageIndex = 0;
for (Iterator pageIter = unicodeFont.getGlyphPages().iterator(); pageIter.hasNext();) {
GlyphPage page = (GlyphPage)pageIter.next();
String fileName;
if (pageIndex == 0 && !pageIter.hasNext())
fileName = outputName + ".png";
else
fileName = outputName + (pageIndex + 1) + ".png";
page.getTexture().bind();
buffer.clear();
GL11.glGetTexImage(GL11.GL_TEXTURE_2D, 0, GL12.GL_BGRA, GL11.GL_UNSIGNED_BYTE, buffer);
WritableRaster raster = pageImage.getRaster();
for (int y = 0; y < height; y++) {
buffer.get(row);
raster.setDataElements(0, y, width, 1, row);
}
File imageOutputFile = new File(outputDir, fileName);
ImageIO.write(pageImage, "png", imageOutputFile);
pageIndex++;
}
}
/** @return May be null. */
private Glyph getGlyph (char c) {
char[] chars = {c};
GlyphVector vector = unicodeFont.getFont().layoutGlyphVector(GlyphPage.renderContext, chars, 0, chars.length,
Font.LAYOUT_LEFT_TO_RIGHT);
Rectangle bounds = vector.getGlyphPixelBounds(0, GlyphPage.renderContext, 0, 0);
return unicodeFont.getGlyph(vector.getGlyphCode(0), c, bounds, vector, 0);
}
void writeGlyph (PrintStream out, int pageWidth, int pageHeight, int pageIndex, Glyph glyph) {
out.println("char id=" + String.format("%-7s ", glyph.getCodePoint()) //
+ "x=" + String.format("%-5s", (int)(glyph.getU() * pageWidth)) //
+ "y=" + String.format("%-5s", (int)(glyph.getV() * pageHeight)) //
+ "width=" + String.format("%-5s", glyph.getWidth()) //
+ "height=" + String.format("%-5s", glyph.getHeight()) //
+ "xoffset=" + String.format("%-5s", glyph.getXOffset()) //
+ "yoffset=" + String.format("%-5s", glyph.getYOffset()) //
+ "xadvance=" + String.format("%-5s", glyph.getXAdvance()) //
+ "page=" + String.format("%-5s", pageIndex) //
+ "chnl=0 ");
}
private int getGlyphCode (Font font, int codePoint) {
char[] chars = Character.toChars(codePoint);
GlyphVector vector = font.layoutGlyphVector(GlyphPage.renderContext, chars, 0, chars.length, Font.LAYOUT_LEFT_TO_RIGHT);
return vector.getGlyphCode(0);
}
}