propose-patch

[org.ibex.core.git] / src / org / xwt / Picture.java

diff --git a/src/org/xwt/Picture.java b/src/org/xwt/Picture.java
index 4d563e0..44565d5 100644 (file)
--- a/src/org/xwt/Picture.java
+++ b/src/org/xwt/Picture.java
@@ -1,4 +1,4 @@
-// Copyright 2003 Adam Megacz, see the COPYING file for licensing [GPL]
+// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
 package org.xwt;
 import java.io.*;
 import org.xwt.js.*;
@@ -16,46 +16,34 @@ import org.xwt.translators.*;
  */
 public class Picture {
 
-    public Picture() { this.res = null; }
-    public Picture(Res r) { this.res = r; }
-    private static Cache cache = new Cache(100);   ///< Picture, keyed by the Res that loaded them
+    public Picture() { this.stream = null; }
+    public Picture(JS r) { this.stream = r; }
+    private static Cache cache = new Cache(100);   ///< Picture, keyed by the Stream that loaded them
 
-    public Res res = null;                         ///< the resource we were loaded from
+    public JS stream = null;                       ///< the stream we were loaded from
     public int width = -1;                         ///< the width of the image
     public int height = -1;                        ///< the height of the image
     public int[] data = null;                      ///< argb samples
     public boolean isLoaded = false;               ///< true iff the image is fully loaded
-    
-    /** turns a resource into a Picture.Source and passes it to the callback */
-    public static Picture load(final Res r, final Scheduler.Task callback) {
-        Picture ret = (Picture)cache.get(r);
-        if (ret == null) cache.put(r, ret = Platform.createPicture(r));
+
+    /** invoked when an image is fully loaded; subclasses can use this to initialize platform-specific constructs */
+    protected void loaded() { isLoaded = true; }
+
+    /** turns a stream into a Picture.Source and passes it to the callback */
+    public static Picture load(final JS stream, final Scheduler.Task callback) {
+        Picture ret = (Picture)cache.get(stream);
+        if (ret == null) cache.put(stream, ret = Platform.createPicture(stream));
         final Picture p = ret;
-        if (!ret.isLoaded && callback != null)
+        if (!ret.isLoaded && callback != null) {
+            final XWT.Blessing b = XWT.Blessing.getBlessing(stream);
             new java.lang.Thread() { public void run() {
-                // get the InputStream for the image
                 InputStream in = null;
                 try {
-                    in = r.getInputStream();
-                } catch (IOException e) {
-                    in = null;
-                    if (r instanceof Res.Ref) {
-                        // add extensions to the resource, looking for the image
-                        Res.Ref ref = (Res.Ref)r;
-                        Res newr;
-
-                        String[] exts = new String[] { ".png", ".jpeg", ".gif" };
-                        for (int i=0; i < exts.length && in == null; i++) {
-                            newr = ref.addExtension(exts[i]);
-                            try { in = newr.getInputStream(); }
-                            catch (IOException f) { in = null; }
-                        }
-                    }
+                    in = b == null ? Stream.getInputStream(stream) : b.getImage();
+                } catch (IOException e) { Log.error(Picture.class, stream);
+                } catch (JSExn e) { Log.error(Picture.class, stream);
                 }
-        
-                // could not find image
-                if (in == null) { Log.info(Picture.class, "couldn't load image for resource " + r); return; }
-
+                if (in == null) { Log.warn(Picture.class, "couldn't load image for stream " + stream); return; }
                 try {
                     PushbackInputStream pbis = new PushbackInputStream(in);
                     int firstByte = pbis.read();
@@ -65,14 +53,14 @@ public class Picture {
                     else if ((firstByte & 0xff) == 137)  PNG.load(pbis, p);
                     else if ((firstByte & 0xff) == 0xff) Platform.decodeJPEG(pbis, p);
                     else throw new JSExn("couldn't figure out image type from first byte");
-                    p.isLoaded = true;
+                    p.loaded();
                     Scheduler.add(callback);
                 } catch (Exception e) {
                     Log.info(this, "exception while loading image");
                     Log.info(this, e);
                 }
             } }.start();
-
+        }
         return ret;
     }
 }