Fix for bug 6100:...

webkit/port/bindings/v8/V8CanvasPixelArrayCustom.cpp

+// Copyright (c) 2009, Google Inc.
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+// 
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "config.h"
+
+#include "v8_binding.h"
+#include "v8_custom.h"
+#include "v8_events.h"
+#include "v8_proxy.h"
+
+#include "CanvasPixelArray.h"
+
+namespace WebCore {
+
+// Get the specified value from the pixel buffer and return it wrapped as a
+// JavaScript Number object to V8. Accesses outside the valid pixel buffer
+// range return "undefined".
+INDEXED_PROPERTY_GETTER(CanvasPixelArray) {
+    INC_STATS("DOM.CanvasPixelArray.IndexedPropertyGetter");
+    CanvasPixelArray* pixelBuffer =
+        V8Proxy::ToNativeObject<CanvasPixelArray>(
+            V8ClassIndex::CANVASPIXELARRAY,
+            info.Holder());
+  
+    if ((index < 0) || (index >= pixelBuffer->length())) {
+        return v8::Undefined();
+    }
+    return v8::Number::New(pixelBuffer->get(index));
+}
+
+
+// Set the specified value in the pixel buffer. Accesses outside the valid pixel
+// buffer range are silently ignored.
+INDEXED_PROPERTY_SETTER(CanvasPixelArray) {
+    INC_STATS("DOM.CanvasPixelArray.IndexedPropertySetter");
+    CanvasPixelArray* pixelBuffer =
+        V8Proxy::ToNativeObject<CanvasPixelArray>(
+            V8ClassIndex::CANVASPIXELARRAY,
+            info.Holder());
+  
+    if ((index >= 0) && (index < pixelBuffer->length())) {
+        pixelBuffer->set(index, value->NumberValue());
+    }
+    return value;
+}
+
+
+}  // namespace WebCore