Update To 11.40.268.0

[platform/framework/web/crosswalk.git] / src / third_party / WebKit / Source / core / html / ImageData.cpp

diff --git a/src/third_party/WebKit/Source/core/html/ImageData.cpp b/src/third_party/WebKit/Source/core/html/ImageData.cpp
index 64c86c9..c9254d2 100644 (file)
--- a/src/third_party/WebKit/Source/core/html/ImageData.cpp
+++ b/src/third_party/WebKit/Source/core/html/ImageData.cpp
@@ -29,48 +29,129 @@
 #include "config.h"
 #include "core/html/ImageData.h"
 
-namespace WebCore {
+#include "bindings/core/v8/ExceptionState.h"
+#include "bindings/core/v8/V8Uint8ClampedArray.h"
+#include "core/dom/ExceptionCode.h"
+#include "platform/RuntimeEnabledFeatures.h"
 
-PassRefPtr<ImageData> ImageData::create(const IntSize& size)
+namespace blink {
+
+PassRefPtrWillBeRawPtr<ImageData> ImageData::create(const IntSize& size)
 {
     Checked<int, RecordOverflow> dataSize = 4;
     dataSize *= size.width();
     dataSize *= size.height();
     if (dataSize.hasOverflowed())
-        return 0;
+        return nullptr;
 
-    return adoptRef(new ImageData(size));
+    return adoptRefWillBeNoop(new ImageData(size));
 }
 
-PassRefPtr<ImageData> ImageData::create(const IntSize& size, PassRefPtr<Uint8ClampedArray> byteArray)
+PassRefPtrWillBeRawPtr<ImageData> ImageData::create(const IntSize& size, PassRefPtr<Uint8ClampedArray> byteArray)
 {
     Checked<int, RecordOverflow> dataSize = 4;
     dataSize *= size.width();
     dataSize *= size.height();
     if (dataSize.hasOverflowed())
-        return 0;
+        return nullptr;
 
     if (dataSize.unsafeGet() < 0
         || static_cast<unsigned>(dataSize.unsafeGet()) > byteArray->length())
-        return 0;
+        return nullptr;
 
-    return adoptRef(new ImageData(size, byteArray));
+    return adoptRefWillBeNoop(new ImageData(size, DOMUint8ClampedArray::create(byteArray)));
+}
+
+PassRefPtrWillBeRawPtr<ImageData> ImageData::create(unsigned width, unsigned height, ExceptionState& exceptionState)
+{
+    if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) {
+        exceptionState.throwTypeError("Illegal constructor");
+        return nullptr;
+    }
+    if (!width || !height) {
+        exceptionState.throwDOMException(IndexSizeError, String::format("The source %s is zero or not a number.", width ? "height" : "width"));
+        return nullptr;
+    }
+
+    Checked<unsigned, RecordOverflow> dataSize = 4;
+    dataSize *= width;
+    dataSize *= height;
+    if (dataSize.hasOverflowed()) {
+        exceptionState.throwDOMException(IndexSizeError, "The requested image size exceeds the supported range.");
+        return nullptr;
+    }
+
+    RefPtrWillBeRawPtr<ImageData> imageData = adoptRefWillBeNoop(new ImageData(IntSize(width, height)));
+    imageData->data()->zeroFill();
+    return imageData.release();
+}
+
+PassRefPtrWillBeRawPtr<ImageData> ImageData::create(DOMUint8ClampedArray* data, unsigned width, unsigned height, ExceptionState& exceptionState)
+{
+    if (!RuntimeEnabledFeatures::imageDataConstructorEnabled()) {
+        exceptionState.throwTypeError("Illegal constructor");
+        return nullptr;
+    }
+    if (!data) {
+        exceptionState.throwTypeError("Expected a Uint8ClampedArray as first argument.");
+        return nullptr;
+    }
+    if (!width) {
+        exceptionState.throwDOMException(IndexSizeError, "The source width is zero or not a number.");
+        return nullptr;
+    }
+
+    unsigned length = data->length();
+    if (!length) {
+        exceptionState.throwDOMException(IndexSizeError, "The input data has a zero byte length.");
+        return nullptr;
+    }
+    if (length % 4) {
+        exceptionState.throwDOMException(IndexSizeError, "The input data byte length is not a multiple of 4.");
+        return nullptr;
+    }
+    length /= 4;
+    if (length % width) {
+        exceptionState.throwDOMException(IndexSizeError, "The input data byte length is not a multiple of (4 * width).");
+        return nullptr;
+    }
+    if (!height) {
+        height = length / width;
+    } else if (height != length / width) {
+        exceptionState.throwDOMException(IndexSizeError, "The input data byte length is not equal to (4 * width * height).");
+        return nullptr;
+    }
+
+    return adoptRefWillBeNoop(new ImageData(IntSize(width, height), data));
+}
+
+v8::Handle<v8::Object> ImageData::associateWithWrapper(const WrapperTypeInfo* wrapperType, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate)
+{
+    ScriptWrappable::associateWithWrapper(wrapperType, wrapper, isolate);
+
+    if (!wrapper.IsEmpty()) {
+        // Create a V8 Uint8ClampedArray object.
+        v8::Handle<v8::Value> pixelArray = toV8(m_data.get(), wrapper, isolate);
+        // Set the "data" property of the ImageData object to
+        // the created v8 object, eliminating the C++ callback
+        // when accessing the "data" property.
+        if (!pixelArray.IsEmpty())
+            wrapper->ForceSet(v8AtomicString(isolate, "data"), pixelArray, v8::ReadOnly);
+    }
+    return wrapper;
 }
 
 ImageData::ImageData(const IntSize& size)
     : m_size(size)
-    , m_data(Uint8ClampedArray::createUninitialized(size.width() * size.height() * 4))
+    , m_data(DOMUint8ClampedArray::create(size.width() * size.height() * 4))
 {
-    ScriptWrappable::init(this);
 }
 
-ImageData::ImageData(const IntSize& size, PassRefPtr<Uint8ClampedArray> byteArray)
+ImageData::ImageData(const IntSize& size, PassRefPtr<DOMUint8ClampedArray> byteArray)
     : m_size(size)
     , m_data(byteArray)
 {
     ASSERT_WITH_SECURITY_IMPLICATION(static_cast<unsigned>(size.width() * size.height() * 4) <= m_data->length());
-    ScriptWrappable::init(this);
-}
-
 }
 
+} // namespace blink