1 files changed, 55 insertions, 0 deletions
diff --git a/trunk/etherpad/src/etherpad/collab/genimg.js b/trunk/etherpad/src/etherpad/collab/genimg.js
new file mode 100644
index 0000000..04d1b3b
--- /dev/null
+++ b/trunk/etherpad/src/etherpad/collab/genimg.js
@@ -0,0 +1,55 @@
+/**
+ * Copyright 2009 Google Inc.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS-IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import("sync");
+import("image");
+import("blob");
+
+//jimport("java.lang.System.out.println");
+
+function _cache() {
+  sync.callsyncIfTrue(appjet.cache,
+    function() { return ! appjet.cache["etherpad-genimg"]; },
+    function() { appjet.cache["etherpad-genimg"] = { paths: {}}; });
+  return appjet.cache["etherpad-genimg"];
+}
+
+function renderPath(path) {
+  if (_cache().paths[path]) {
+    //println("CACHE HIT");
+  }
+  else {
+    //println("CACHE MISS");
+    var regexResult = null;
+    var img = null;
+    if ((regexResult =
+	 /solid\/([0-9]+)x([0-9]+)\/([0-9a-fA-F]{6})\.gif/.exec(path))) {
+      var width = Number(regexResult[1]);
+      var height = Number(regexResult[2]);
+      var color = regexResult[3];
+      img = image.solidColorImageBlob(width, height, color);
+    }
+    else {
+      // our "broken image" image, red and partly transparent
+      img = image.pixelsToImageBlob(2, 2, [0x00000000, 0xffff0000,
+					   0xffff0000, 0x00000000], true, "gif");
+    }
+    _cache().paths[path] = img;
+  }
+  
+  blob.serveBlob(_cache().paths[path]);
+  return true;
+}