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support java1.6
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@dingjibang
dingjibang committed Nov 13, 2015
1 parent 85dcadf commit 562303a
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2 changes: 1 addition & 1 deletion .project
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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>WeiboPredict</name>
<name>GDX-LAZY-FONT</name>
<comment></comment>
<projects>
</projects>
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328 changes: 170 additions & 158 deletions src/com/rpsg/lazyFont/lazyBitmapFont.java
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package com.rpsg.lazyFont;

import java.lang.reflect.Field;

import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Pixmap.Format;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.graphics.g2d.freetype.FreeType;
import com.badlogic.gdx.graphics.g2d.freetype.FreeType.Face;
import com.badlogic.gdx.graphics.g2d.freetype.FreeType.SizeMetrics;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.FreeTypeBitmapFontData;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.FreeTypeFontParameter;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.GlyphAndBitmap;
import com.badlogic.gdx.utils.GdxRuntimeException;

/**
* GDX-LAZY-FONT for LibGDX 1.5.0+<br/>
* <b>Auto generate & manage your bitmapfont without pre-generate.</b>
*
* @version 2.1.0
* @see see https://github.com/dingjibang/GDX-LAZY-FONT
* @author dingjibang
*
*/
public class LazyBitmapFont extends BitmapFont {

private FreeTypeFontGenerator generator;
private FreeTypeBitmapFontData data;
private FreeTypeFontParameter parameter;

public LazyBitmapFont(FreeTypeFontGenerator gen, int fontSize) {
this.generator = gen;
FreeTypeFontParameter param = new FreeTypeFontParameter();
param.size = fontSize;
this.parameter = param;
this.data = new LazyBitmapFontData(generator, fontSize, this);
try {
Field f = getClass().getSuperclass().getDeclaredField("data");
f.setAccessible(true);
f.set(this, data);
} catch (IllegalArgumentException | IllegalAccessException | NoSuchFieldException | SecurityException e) {
e.printStackTrace();
}

genrateData();
}

private void genrateData() {
Face face = null;
try {
Field field = generator.getClass().getDeclaredField("face");
field.setAccessible(true);
face = (Face) field.get(generator);
} catch (IllegalArgumentException | IllegalAccessException | NoSuchFieldException | SecurityException e) {
e.printStackTrace();
return;
}

// set general font data
SizeMetrics fontMetrics = face.getSize().getMetrics();

// Set space glyph.
Glyph spaceGlyph = data.getGlyph(' ');
if (spaceGlyph == null) {
spaceGlyph = new Glyph();
spaceGlyph.xadvance = (int) data.spaceWidth;
spaceGlyph.id = (int) ' ';
data.setGlyph(' ', spaceGlyph);
}
if (spaceGlyph.width == 0)
spaceGlyph.width = (int) (spaceGlyph.xadvance + data.padRight);

// set general font data
data.flipped = parameter.flip;
data.ascent = FreeType.toInt(fontMetrics.getAscender());
data.descent = FreeType.toInt(fontMetrics.getDescender());
data.lineHeight = FreeType.toInt(fontMetrics.getHeight());

// determine x-height
for (char xChar : data.xChars) {
if (!face.loadChar(xChar, FreeType.FT_LOAD_DEFAULT))
continue;
data.xHeight = FreeType.toInt(face.getGlyph().getMetrics().getHeight());
break;
}
if (data.xHeight == 0)
throw new GdxRuntimeException("No x-height character found in font");
for (char capChar : data.capChars) {
if (!face.loadChar(capChar, FreeType.FT_LOAD_DEFAULT))
continue;
data.capHeight = FreeType.toInt(face.getGlyph().getMetrics().getHeight());
break;
}

// determine cap height
if (data.capHeight == 1)
throw new GdxRuntimeException("No cap character found in font");
data.ascent = data.ascent - data.capHeight;
data.down = -data.lineHeight;
if (parameter.flip) {
data.ascent = -data.ascent;
data.down = -data.down;
}

}

@Override
public void dispose() {
setOwnsTexture(true);
super.dispose();
data.dispose();

}

public static class LazyBitmapFontData extends FreeTypeBitmapFontData {

private FreeTypeFontGenerator generator;
private int fontSize;
private LazyBitmapFont font;
private int page = 1;

public LazyBitmapFontData(FreeTypeFontGenerator generator, int fontSize, LazyBitmapFont lbf) {
this.generator = generator;
this.fontSize = fontSize;
this.font = lbf;
}

public Glyph getGlyph(char ch) {
Glyph glyph = super.getGlyph(ch);
if (glyph == null && ch != 0)
glyph = generateGlyph(ch);
return glyph;
}

protected Glyph generateGlyph(char ch) {
GlyphAndBitmap gab = generator.generateGlyphAndBitmap(ch, fontSize, false);
if (gab == null || gab.bitmap == null)
return null;

Pixmap map = gab.bitmap.getPixmap(Format.RGBA8888);
TextureRegion rg = new TextureRegion(new Texture(map));
map.dispose();

font.getRegions().add(rg);

gab.glyph.page = page++;
super.setGlyph(ch, gab.glyph);
setGlyphRegion(gab.glyph, rg);

return gab.glyph;
}

}

}
package com.rpsg.lazyFont;

import java.lang.reflect.Field;

import com.badlogic.gdx.graphics.Pixmap;
import com.badlogic.gdx.graphics.Pixmap.Format;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.badlogic.gdx.graphics.g2d.TextureRegion;
import com.badlogic.gdx.graphics.g2d.freetype.FreeType;
import com.badlogic.gdx.graphics.g2d.freetype.FreeType.Face;
import com.badlogic.gdx.graphics.g2d.freetype.FreeType.SizeMetrics;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.FreeTypeBitmapFontData;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.FreeTypeFontParameter;
import com.badlogic.gdx.graphics.g2d.freetype.FreeTypeFontGenerator.GlyphAndBitmap;
import com.badlogic.gdx.utils.GdxRuntimeException;

/**
* GDX-LAZY-FONT for LibGDX 1.5.0+<br/>
* <b>Auto generate & manage your bitmapfont without pre-generate.</b>
*
* @version 2.1.5
* @see see https://github.com/dingjibang/GDX-LAZY-FONT
* @author dingjibang
*
*/
public class LazyBitmapFont extends BitmapFont {

private FreeTypeFontGenerator generator;
private FreeTypeBitmapFontData data;
private FreeTypeFontParameter parameter;

private static FreeTypeFontGenerator GLOBAL_GEN = null;

public static void setGlobalGenerator(FreeTypeFontGenerator generator){
GLOBAL_GEN = generator;
}

public LazyBitmapFont(int fontSize){
this(GLOBAL_GEN,fontSize);
}

public LazyBitmapFont(FreeTypeFontGenerator generator, int fontSize) {
if(generator == null)
throw new GdxRuntimeException("lazyBitmapFont global generator must be not null to use this constructor.");
this.generator = generator;
FreeTypeFontParameter param = new FreeTypeFontParameter();
param.size = fontSize;
this.parameter = param;
this.data = new LazyBitmapFontData(generator, fontSize, this);
try {
Field f = getClass().getSuperclass().getDeclaredField("data");
f.setAccessible(true);
f.set(this, data);
} catch (Exception e) {
e.printStackTrace();
}

genrateData();
}

private void genrateData() {
Face face = null;
try {
Field field = generator.getClass().getDeclaredField("face");
field.setAccessible(true);
face = (Face) field.get(generator);
} catch (Exception e) {
e.printStackTrace();
return;
}

// set general font data
SizeMetrics fontMetrics = face.getSize().getMetrics();

// Set space glyph.
Glyph spaceGlyph = data.getGlyph(' ');
if (spaceGlyph == null) {
spaceGlyph = new Glyph();
spaceGlyph.xadvance = (int) data.spaceWidth;
spaceGlyph.id = (int) ' ';
data.setGlyph(' ', spaceGlyph);
}
if (spaceGlyph.width == 0)
spaceGlyph.width = (int) (spaceGlyph.xadvance + data.padRight);

// set general font data
data.flipped = parameter.flip;
data.ascent = FreeType.toInt(fontMetrics.getAscender());
data.descent = FreeType.toInt(fontMetrics.getDescender());
data.lineHeight = FreeType.toInt(fontMetrics.getHeight());

// determine x-height
for (char xChar : data.xChars) {
if (!face.loadChar(xChar, FreeType.FT_LOAD_DEFAULT))
continue;
data.xHeight = FreeType.toInt(face.getGlyph().getMetrics().getHeight());
break;
}
if (data.xHeight == 0)
throw new GdxRuntimeException("No x-height character found in font");
for (char capChar : data.capChars) {
if (!face.loadChar(capChar, FreeType.FT_LOAD_DEFAULT))
continue;
data.capHeight = FreeType.toInt(face.getGlyph().getMetrics().getHeight());
break;
}

// determine cap height
if (data.capHeight == 1)
throw new GdxRuntimeException("No cap character found in font");
data.ascent = data.ascent - data.capHeight;
data.down = -data.lineHeight;
if (parameter.flip) {
data.ascent = -data.ascent;
data.down = -data.down;
}

}

@Override
public void dispose() {
setOwnsTexture(true);
super.dispose();
data.dispose();

}

public static class LazyBitmapFontData extends FreeTypeBitmapFontData {

private FreeTypeFontGenerator generator;
private int fontSize;
private LazyBitmapFont font;
private int page = 1;

public LazyBitmapFontData(FreeTypeFontGenerator generator, int fontSize, LazyBitmapFont lbf) {
this.generator = generator;
this.fontSize = fontSize;
this.font = lbf;
}

public Glyph getGlyph(char ch) {
Glyph glyph = super.getGlyph(ch);
if (glyph == null && ch != 0)
glyph = generateGlyph(ch);
return glyph;
}

protected Glyph generateGlyph(char ch) {
GlyphAndBitmap gab = generator.generateGlyphAndBitmap(ch, fontSize, false);
if (gab == null || gab.bitmap == null)
return null;

Pixmap map = gab.bitmap.getPixmap(Format.RGBA8888);
TextureRegion rg = new TextureRegion(new Texture(map));
map.dispose();

font.getRegions().add(rg);

gab.glyph.page = page++;
super.setGlyph(ch, gab.glyph);
setGlyphRegion(gab.glyph, rg);

return gab.glyph;
}

}

}

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