freetype fixes

[org.ibex.core.git] / src / org / ibex / graphics / Font.java

diff --git a/src/org/ibex/graphics/Font.java b/src/org/ibex/graphics/Font.java
index 451672e..6df9899 100644 (file)
--- a/src/org/ibex/graphics/Font.java
+++ b/src/org/ibex/graphics/Font.java
@@ -1,11 +1,12 @@
 // 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.xwt.mips.*;
+import org.ibex.plat.*;
+import org.xwt.mips.Runtime;
 
 // FEATURE: this could be cleaner
 /** encapsulates a single font (a set of Glyphs) */
@@ -33,7 +34,7 @@ public class Font {
         public int height = -1;                 ///< the height of the glyph
         public byte[] data = null;              ///< the alpha channel samples for this font
         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;
         }
     }
@@ -41,7 +42,6 @@ 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);
@@ -94,7 +94,7 @@ public class Font {
         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;
@@ -107,4 +107,75 @@ public class Font {
         glyphRenderingTaskIsScheduled = true;
         Scheduler.add(this);
     } };
+
+
+    // FreeType Interface //////////////////////////////////////////////////////////////////////////////
+
+    // FEATURE: use streams, not memoryfont's
+    // FEATURE: kerning pairs
+    private static final Runtime rt;
+    private static Stream loadedStream;
+    private static int loadedStreamAddr;
+
+    static {
+        try {
+            rt = (Runtime)Class.forName("org.ibex.util.MIPSApps").newInstance();
+        } catch(Exception e) {
+            throw new Error("Error instansiating freetype");
+        }
+        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(Stream res) {
+        if(loadedStream == res) return;
+        
+        try {
+            Log.info(Font.class, "loading font " + 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);
+            
+            glyph.isLoaded = true;
+        } catch (Exception e) {
+            // FEATURE: Better error reporting (thow an exception?)
+            Log.info(Font.class, e);
+        }
+    }
 }