// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
-package org.ibex;
-import org.ibex.translators.*;
+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.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; }
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;
}
}
// 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) {
+ public static Font getFont(JS 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));
return ret;
return ret;
}
- static final Scheduler.Task glyphRenderingTask = new Scheduler.Task() { public void perform() {
+ static final Task glyphRenderingTask = new Task() { public void perform() {
// FIXME: this should be a low-priority task
glyphRenderingTaskIsScheduled = false;
if (glyphsToBeCached.isEmpty()) return;
glyphRenderingTaskIsScheduled = true;
Scheduler.add(this);
} };
+
+
+ // 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 " + JS.debugToString(res));
+ InputStream is = Stream.getInputStream(res);
+ 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);
+ }
+ }
}
projects / org.ibex.core.git / blobdiff