V8ImageDataCustom.cpp revision cad810f21b803229eb11403f9209855525a25d57 
1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "V8ImageData.h"
33
34#include "V8CanvasPixelArray.h"
35
36namespace WebCore {
37
38v8::Handle<v8::Value> toV8(ImageData* impl)
39{
40    if (!impl)
41        return v8::Null();
42    v8::Handle<v8::Object> wrapper = V8ImageData::wrap(impl);
43    if (!wrapper.IsEmpty()) {
44        // Create a V8 CanvasPixelArray object.
45        v8::Handle<v8::Value> pixelArray = toV8(impl->data());
46        // Set the "data" property of the ImageData object to
47        // the created v8 object, eliminating the C++ callback
48        // when accessing the "data" property.
49        if (!pixelArray.IsEmpty()) {
50            wrapper->Set(v8::String::NewSymbol("data"),
51                         pixelArray,
52                         v8::ReadOnly);
53        }
54    }
55
56    return wrapper;
57}
58
59} // namespace WebCore
60