2003/11/03 07:36:40

[org.ibex.core.git] / src / org / xwt / translators / Freetype.java

diff --git a/src/org/xwt/translators/Freetype.java b/src/org/xwt/translators/Freetype.java
index de5e0c0..18934c9 100644 (file)
--- a/src/org/xwt/translators/Freetype.java
+++ b/src/org/xwt/translators/Freetype.java
@@ -4,6 +4,7 @@ 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
@@ -37,8 +38,33 @@ public class Freetype {
         }
     }
 
-    public synchronized void renderGlyph(Font.Glyph glyph) {
-        try {
+    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);
@@ -50,21 +76,29 @@ public class Freetype {
             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");
-                glyph.p = Platform.createAlphaOnlyPicture(new byte[] { }, 0, 0);
-                
-            } 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);
-            }
+            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);
     }
 }