package org.newdawn.slick.tools.hiero;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.font.GlyphMetrics;
import java.awt.font.GlyphVector;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import org.newdawn.slick.SlickException;
import org.newdawn.slick.UnicodeFont;
import org.newdawn.slick.font.Glyph;
import org.newdawn.slick.font.GlyphPage;
import org.newdawn.slick.imageout.ImageIOWriter;
import org.newdawn.slick.util.Log;
import org.newdawn.slick.util.ResourceLoader;
/**
* @author Nathan Sweet <misc@n4te.com>
*/
public class BMFontUtil {
private final UnicodeFont unicodeFont;
public BMFontUtil (UnicodeFont unicodeFont) {
this.unicodeFont = unicodeFont;
}
public void save (File outputBMFontFile) throws IOException, SlickException {
File outputDir = outputBMFontFile.getParentFile();
String outputName = outputBMFontFile.getName();
if (outputName.endsWith(".fnt")) outputName = outputName.substring(0, outputName.length() - 4);
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=0,0,0,0 spacing=1,1");
out.println("common lineHeight=" + unicodeFont.getLineHeight() + " base=26 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);
// Always output space entry (codepoint 32).
int[] glyphMetrics = getGlyphMetrics(font, 32);
int xAdvance = glyphMetrics[1];
out.println("char id=32 x=0 y=0 width=0 height=0 xoffset=0 yoffset=" + unicodeFont.getAscent()
+ " xadvance=" + xAdvance + " page=0 chnl=0 ");
pageIndex = 0;
List allGlyphs = new ArrayList(512);
for (Iterator pageIter = unicodeFont.getGlyphPages().iterator(); pageIter.hasNext();) {
GlyphPage page = (GlyphPage)pageIter.next();
for (Iterator glyphIter = page.getGlyphs().iterator(); glyphIter.hasNext();) {
Glyph glyph = (Glyph)glyphIter.next();
glyphMetrics = getGlyphMetrics(font, glyph.getCodePoint());
int xOffset = glyphMetrics[0];
xAdvance = glyphMetrics[1];
out.println("char id=" + glyph.getCodePoint() + " " + "x="
+ (int)(glyph.getImage().getTextureOffsetX() * pageWidth) + " y="
+ (int)(glyph.getImage().getTextureOffsetY() * pageHeight) + " width=" + glyph.getWidth() + " height="
+ glyph.getHeight() + " xoffset=" + xOffset + " yoffset=" + glyph.getYOffset() + " xadvance="
+ xAdvance + " page=" + pageIndex + " chnl=0 ");
}
allGlyphs.addAll(page.getGlyphs());
pageIndex++;
}
String ttfFileRef = unicodeFont.getFontFile();
if (ttfFileRef == null)
Log.warn("Kerning information could not be output because a TTF font file was not specified.");
else {
Kerning kerning = new Kerning();
try {
kerning.load(ResourceLoader.getResourceAsStream(ttfFileRef), font.getSize());
} catch (IOException ex) {
Log.warn("Unable to read kerning information from font: " + ttfFileRef);
}
Map glyphCodeToCodePoint = new HashMap();
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 (Iterator iter1 = allGlyphs.iterator(); iter1.hasNext();) {
Glyph firstGlyph = (Glyph)iter1.next();
int firstGlyphCode = getGlyphCode(font, firstGlyph.getCodePoint());
int[] values = kerning.getValues(firstGlyphCode);
if (values == null) continue;
for (int i = 0; i < values.length; i++) {
Integer secondCodePoint = (Integer)glyphCodeToCodePoint.get(new Integer(values[i] & 0xffff));
if (secondCodePoint == null) continue; // We may not be outputting the second character.
int offset = values[i] >> 16;
KerningPair pair = new KerningPair();
pair.firstCodePoint = firstGlyph.getCodePoint();
pair.secondCodePoint = secondCodePoint.intValue();
pair.offset = offset;
kernings.add(pair);
}
}
out.println("kernings count=" + kerning.getCount());
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();
pageIndex = 0;
ImageIOWriter imageWriter = new ImageIOWriter();
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";
File imageOutputFile = new File(outputDir, fileName);
FileOutputStream imageOutput = new FileOutputStream(imageOutputFile);
try {
imageWriter.saveImage(page.getImage(), "png", imageOutput, true);
} finally {
imageOutput.close();
}
// Flip output image.
Image image = new ImageIcon(imageOutputFile.getAbsolutePath()).getImage();
BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_ARGB);
Graphics g = bufferedImage.getGraphics();
g.drawImage(image, 0, 0, null);
AffineTransform tx = AffineTransform.getScaleInstance(-1, 1);
tx.translate(0, -image.getHeight(null));
AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
bufferedImage = op.filter(bufferedImage, null);
ImageIO.write(bufferedImage, "png", imageOutputFile);
pageIndex++;
}
}
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);
}
private int[] getGlyphMetrics (Font font, int codePoint) {
// xOffset and xAdvance will be incorrect for unicode characters such as combining marks or non-spacing characters
// (eg Pnujabi's "\u0A1C\u0A47") that require the context of surrounding glyphs to determine spacing, but thisis the
// best we can do with the BMFont format.
char[] chars = Character.toChars(codePoint);
GlyphVector vector = font.layoutGlyphVector(GlyphPage.renderContext, chars, 0, chars.length, Font.LAYOUT_LEFT_TO_RIGHT);
GlyphMetrics metrics = vector.getGlyphMetrics(0);
int xOffset = vector.getGlyphPixelBounds(0, null, 0, 0).x - unicodeFont.getPaddingLeft();
int xAdvance = (int)(metrics.getAdvanceX() + unicodeFont.getPaddingAdvanceX() + unicodeFont.getPaddingLeft() + unicodeFont
.getPaddingRight());
return new int[] {xOffset, xAdvance};
}
}