-package org.xwt.translators;
-import org.xwt.*;
-import org.xwt.util.*;
-import java.io.*;
-import java.util.zip.*;
-import java.util.*;
-
-// FEATURE: use streams, not memoryfont's
-// FEATURE: kerning pairs
-public class Freetype {
-
- public Freetype() { }
-
- private static byte[] image = null;
- private static final int FONT_RESERVED = 256*1024;
-
- private org.xwt.mips.Interpreter vm = null;
-
- private Res loadedStream = null;
-
- public void loadFontByteStream(Res res) {
- try {
- Log.log(this, "loading font " + res.getDescriptiveName());
- loadedStream = res;
- InputStream is = res.getInputStream();
- byte[] fontstream = InputStreamToByteArray.convert(is);
- if (image == null) image = InputStreamToByteArray.convert(Main.builtin.getInputStream("freetype.mips"));
- vm = new org.xwt.mips.Interpreter(image);
- int baseAddr = vm.sbrk(FONT_RESERVED);
- vm.copyout(fontstream, baseAddr, fontstream.length);
- vm.setUserInfo(0, baseAddr);
- vm.setUserInfo(1, fontstream.length);
- vm.start(new String[]{ "freetype.mips" });
- vm.execute();
- } catch (Exception e) {
- Log.log(this, e);
- }
- }
-
- public synchronized void renderGlyph(Res res, Glyph glyph) {
- try {
- if (loadedStream != res) loadFontByteStream(res);
- vm.setUserInfo(2, (int)glyph.c);
- vm.setUserInfo(3, (int)glyph.c);
- vm.setUserInfo(4, glyph.pointsize);
- long start = System.currentTimeMillis();
- vm.execute();
- glyph.max_ascent = vm.getUserInfo(8);
- glyph.max_descent = vm.getUserInfo(9);
- glyph.baseline = vm.getUserInfo(10);
- glyph.advance = vm.getUserInfo(11);
-
- int width = vm.getUserInfo(6);
- int height = vm.getUserInfo(7);
- if (width == 0 || height == 0) {
- Log.log(Freetype.class, "warning glyph has zero width/height");
-
- } else {
- byte[] data = new byte[width * height];
- int addr = vm.getUserInfo(5);
- vm.copyin(addr,data,width*height);
- glyph.p = Platform.createAlphaOnlyPicture(data, width, height);
- }
- } catch (Exception e) {
- Log.log(this, e);
- }
- }
-}