X-Git-Url: http://git.megacz.com/?p=org.ibex.core.git;a=blobdiff_plain;f=src%2Forg%2Fibex%2Fgraphics%2FFont.java;h=1f8f35c0eb1a344f81490252cb7f44ad143ebede;hp=451672e4a3ad254ffdb6c3af31657b56e78e8f6c;hb=e6792a95656bee5fba9891c625bf277804a1c6a5;hpb=4daeeb4119b901d53b44913c86f8af3ce67db925 diff --git a/src/org/ibex/graphics/Font.java b/src/org/ibex/graphics/Font.java index 451672e..1f8f35c 100644 --- a/src/org/ibex/graphics/Font.java +++ b/src/org/ibex/graphics/Font.java @@ -1,26 +1,31 @@ -// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL] -package org.ibex; -import org.ibex.translators.*; +// Copyright 2000-2005 the Contributors, as shown in the revision logs. +// Licensed under the GNU General Public License version 2 ("the License"). +// You may not use this file except in compliance with the License. + +package org.ibex.graphics; import org.ibex.util.*; import java.io.*; import java.util.Hashtable; - -import org.ibex.js.JSExn; +import org.ibex.js.*; +import org.ibex.core.*; +import org.ibex.nestedvm.*; +import org.ibex.plat.*; +import org.ibex.nestedvm.Runtime; // FEATURE: this could be cleaner /** encapsulates a single font (a set of Glyphs) */ public class Font { - private Font(Stream stream, int pointsize) { this.stream = stream; this.pointsize = pointsize; } + private Font(JS stream, int pointsize) { this.stream = stream; this.pointsize = pointsize; } private static boolean glyphRenderingTaskIsScheduled = false; public final int pointsize; ///< the size of the font - public final Stream stream; ///< the stream from which this font was loaded + public final JS stream; ///< the stream from which this font was loaded public int max_ascent; ///< the maximum ascent, in pixels public int max_descent; ///< the maximum descent, in pixels boolean latinCharsPreloaded = false; ///< true if a request to preload ASCII 32-127 has begun - Glyph[] glyphs = new Glyph[65535]; ///< the glyphs that comprise this font + public Glyph[] glyphs = new Glyph[65535]; ///< the glyphs that comprise this font public abstract static class Glyph { protected Glyph(Font font, char c) { this.font = font; this.c = c; } @@ -32,8 +37,9 @@ public class Font { public int width = -1; ///< the width of the glyph public int height = -1; ///< the height of the glyph public byte[] data = null; ///< the alpha channel samples for this font + public String path = null; // FIXME this should be shared across point sizes void render() { - if (!isLoaded) try { freetype.renderGlyph(this); } catch (IOException e) { Log.info(Freetype.class, e); } + if (!isLoaded) try { renderGlyph(this); } catch (IOException e) { Log.info(Font.class, e); } isLoaded = true; } } @@ -41,13 +47,16 @@ public class Font { // Statics ////////////////////////////////////////////////////////////////////// - static final Freetype freetype = new Freetype(); static final Hashtable glyphsToBeCached = new Hashtable(); static final Hashtable glyphsToBeDisplayed = new Hashtable(); - private static Cache fontCache = new Cache(100); - public static Font getFont(Stream stream, int pointsize) { - Font ret = (Font)fontCache.get(stream, new Integer(pointsize)); - if (ret == null) fontCache.put(stream, new Integer(pointsize), ret = new Font(stream, pointsize)); + // HACK: replace with Cache + private static Basket.Map fonts = new Basket.HashMap(); + public static Font getFont(JS stream, int pointsize) { + Basket.Map m = (Basket.Map)fonts.get(stream); + Font ret = null; + if (m != null) ret = (Font)m.get(new Integer(pointsize)); + else fonts.put(stream, m = new Basket.HashMap()); + if (ret == null) m.put(new Integer(pointsize), ret = new Font(stream, pointsize)); return ret; } @@ -83,7 +92,7 @@ public class Font { } // FEATURE do we really need to be caching sizes? - private static Cache sizeCache = new Cache(1000); + private static Cache sizeCache = new Cache(1000, true); public int textwidth(String s) { return (int)((textsize(s) >>> 32) & 0xffffffff); } public int textheight(String s) { return (int)(textsize(s) & 0xffffffffL); } public long textsize(String s) { @@ -94,17 +103,101 @@ public class Font { return ret; } - static final Scheduler.Task glyphRenderingTask = new Scheduler.Task() { public void perform() { + public Glyph getGlyph(char c) { + rasterizeGlyphs(c+"", null, 0, 0, 0, 0, 0, 0, 0); + Glyph g = glyphs[c]; + g.render(); + return g; + } + + static final Callable glyphRenderingTask = new Callable() { public Object run(Object o) { // FIXME: this should be a low-priority task glyphRenderingTaskIsScheduled = false; - if (glyphsToBeCached.isEmpty()) return; + if (glyphsToBeCached.isEmpty()) return null; Glyph g = (Glyph)glyphsToBeCached.keys().nextElement(); - if (g == null) return; + if (g == null) return null; glyphsToBeCached.remove(g); Log.debug(Font.class, "glyphRenderingTask rendering " + g.c + " of " + g.font); g.render(); Log.debug(Glyph.class, " done rendering glyph " + g.c); glyphRenderingTaskIsScheduled = true; Scheduler.add(this); + return null; } }; + + + // FreeType Interface ////////////////////////////////////////////////////////////////////////////// + + // FEATURE: use streams, not memoryfont's + // FEATURE: kerning pairs + private static final Runtime rt; + private static JS loadedStream; + private static int loadedStreamAddr; + + static { + try { + rt = (Runtime)Class.forName("org.ibex.util.MIPSApps").newInstance(); + } catch(Exception e) { + throw new Error("Error instantiating freetype: " + e); + } + rt.start(new String[]{"freetype"}); + rt.execute(); + rtCheck(); + } + + private static void rtCheck() { if(rt.getState() != Runtime.PAUSED) throw new Error("Freetype exited " + rt.exitStatus()); } + + private static void loadFontByteStream(JS res) { + if(loadedStream == res) return; + + try { + Log.info(Font.class, "loading font " + JSU.str(res)); + InputStream is = res.getInputStream(); + byte[] fontstream = InputStreamToByteArray.convert(is); + rt.free(loadedStreamAddr); + loadedStreamAddr = rt.xmalloc(fontstream.length); + rt.copyout(fontstream, loadedStreamAddr, fontstream.length); + if(rt.call("load_font", loadedStreamAddr, fontstream.length) != 0) + throw new RuntimeException("load_font failed"); // FEATURE: better error + rtCheck(); + loadedStream = res; + } catch (Exception e) { + // FEATURE: Better error reporting (thow an exception?) + Log.info(Font.class, e); + } + } + + private static synchronized void renderGlyph(Font.Glyph glyph) throws IOException { + try { + Log.debug(Font.class, "rasterizing glyph " + glyph.c + " of font " + glyph.font); + if (loadedStream != glyph.font.stream) loadFontByteStream(glyph.font.stream); + + long start = System.currentTimeMillis(); + + rt.call("render",glyph.c,glyph.font.pointsize); + rtCheck(); + + glyph.font.max_ascent = rt.getUserInfo(3); + glyph.font.max_descent = rt.getUserInfo(4); + glyph.baseline = rt.getUserInfo(5); + glyph.advance = rt.getUserInfo(6); + + glyph.width = rt.getUserInfo(1); + glyph.height = rt.getUserInfo(2); + + glyph.data = new byte[glyph.width * glyph.height]; + int addr = rt.getUserInfo(0); + rt.copyin(addr, glyph.data, glyph.width * glyph.height); + + byte[] path = new byte[rt.getUserInfo(8)]; + rt.copyin(rt.getUserInfo(7), path, rt.getUserInfo(8)); + glyph.path = new String(path); + glyph.path += " m " + (64 * glyph.advance) + " 0 "; + + glyph.isLoaded = true; + } catch (Exception e) { + // FEATURE: Better error reporting (thow an exception?) + Log.info(Font.class, e); + } + } }