-package org.xwt.translators;
-import org.xwt.*;
-import org.xwt.util.*;
-import java.io.*;
-import java.util.zip.*;
-import java.util.*;
-import org.bouncycastle.util.encoders.Base64;
-
-// 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(Font.Glyph glyph) throws IOException {
- int width = 0;
- int height = 0;
- byte[] data = null;
- String key = glyph.font.res.getDescriptiveName() + ":" + glyph.c;
- key = new String(Base64.encode(key.getBytes()));
- File cacheFile = new java.io.File(System.getProperty("user.home") +
- java.io.File.separatorChar + ".xwt" +
- java.io.File.separatorChar + "caches" +
- java.io.File.separatorChar + "glyphs" +
- java.io.File.separatorChar +
- key);
- new java.io.File(cacheFile.getParent()).mkdirs();
-
- if (cacheFile.exists()) {
- DataInputStream dis = new DataInputStream(new FileInputStream(cacheFile));
- width = dis.readInt();
- height = dis.readInt();
- glyph.font.max_ascent = dis.readInt();
- glyph.font.max_descent = dis.readInt();
- glyph.baseline = dis.readInt();
- glyph.advance = dis.readInt();
- data = new byte[width * height];
- if (width != 0 && height != 0) dis.readFully(data);
-
- } else try {
- System.out.println("cache miss!");
- if (loadedStream != glyph.font.res) loadFontByteStream(glyph.font.res);
- vm.setUserInfo(2, (int)glyph.c);
- vm.setUserInfo(3, (int)glyph.c);
- vm.setUserInfo(4, glyph.font.pointsize);
- long start = System.currentTimeMillis();
- vm.execute();
- glyph.font.max_ascent = vm.getUserInfo(8);
- glyph.font.max_descent = vm.getUserInfo(9);
- glyph.baseline = vm.getUserInfo(10);
- glyph.advance = vm.getUserInfo(11);
-
- width = vm.getUserInfo(6);
- height = vm.getUserInfo(7);
-
- data = new byte[width * height];
- int addr = vm.getUserInfo(5);
- vm.copyin(addr,data,width*height);
- File tmp = new File(cacheFile.getCanonicalPath() + ".tmp");
- DataOutputStream dis = new DataOutputStream(new FileOutputStream(tmp));
- dis.writeInt(width);
- dis.writeInt(height);
- dis.writeInt(glyph.font.max_ascent);
- dis.writeInt(glyph.font.max_descent);
- dis.writeInt(glyph.baseline);
- dis.writeInt(glyph.advance);
- if (width != 0 && height != 0) dis.write(data, 0, data.length);
- dis.close();
- tmp.renameTo(cacheFile);
-
- } catch (Exception e) {
- Log.log(this, e);
- }
-
- if (width == 0 || height == 0) Log.log(Freetype.class, "warning glyph has zero width/height");
- glyph.p = Platform.createAlphaOnlyPicture(data, width, height);
- }
-}