1 /*

     2  * Copyright (C) 2008 Apple 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

     6  * are met:

     7  * 1. Redistributions of source code must retain the above copyright

     8  *    notice, this list of conditions and the following disclaimer.

     9  * 2. Redistributions in binary form must reproduce the above copyright

    10  *    notice, this list of conditions and the following disclaimer in the

    11  *    documentation and/or other materials provided with the distribution.

    12  *

    13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY

    14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR

    17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

    18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

    19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

    20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

    21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

    24  */

    25 

    26 #include "config.h"

    27 #include "JSImageData.h"

    28 

    29 #include "ImageData.h"

    30 #include "PlatformString.h"

    31 

    32 #include <runtime/JSByteArray.h>

    33 #include <wtf/StdLibExtras.h>

    34 

    35 using namespace JSC;

    36 

    37 namespace WebCore {

    38 

    39 JSValue toJS(ExecState* exec, JSDOMGlobalObject* globalObject, ImageData* imageData)

    40 {

    41     if (!imageData)

    42         return jsNull();

    43     

    44     DOMObject* wrapper = getCachedDOMObjectWrapper(exec, imageData);

    45     if (wrapper)

    46         return wrapper;

    47     

    48     wrapper = CREATE_DOM_OBJECT_WRAPPER(exec, globalObject, ImageData, imageData);

    49     Identifier dataName(exec, "data");

    50     DEFINE_STATIC_LOCAL(RefPtr<Structure>, cpaStructure, (JSByteArray::createStructure(jsNull())));

    51     static const ClassInfo cpaClassInfo = { "CanvasPixelArray", 0, 0, 0 };

    52     wrapper->putDirect(dataName, new (exec) JSByteArray(exec, cpaStructure, imageData->data()->data(), &cpaClassInfo), DontDelete | ReadOnly);

    53     exec->heap()->reportExtraMemoryCost(imageData->data()->length());

    54     

    55     return wrapper;

    56 }

    57 

    58 }