src/third_party/WebKit/Source/bindings/core/v8/custom/V8CanvasRenderingContext2DCustom.cpp

   1 /*
   2  * Copyright (C) 2009 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
  26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include "config.h"
  32 #include "bindings/core/v8/V8CanvasRenderingContext2D.h"
  33
  34 #include "bindings/core/v8/V8Binding.h"
  35 #include "bindings/core/v8/V8CanvasGradient.h"
  36 #include "bindings/core/v8/V8CanvasPattern.h"
  37 #include "bindings/core/v8/V8HTMLCanvasElement.h"
  38 #include "bindings/core/v8/V8HTMLImageElement.h"
  39 #include "bindings/core/v8/V8HTMLVideoElement.h"
  40 #include "bindings/core/v8/V8ImageData.h"
  41 #include "core/html/canvas/CanvasGradient.h"
  42 #include "core/html/canvas/CanvasPattern.h"
  43 #include "core/html/canvas/CanvasRenderingContext2D.h"
  44 #include "core/html/canvas/CanvasStyle.h"
  45 #include "platform/geometry/FloatRect.h"
  46
  47 namespace blink {
  48
  49 static v8::Handle<v8::Value> toV8Object(CanvasStyle* style, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
  50 {
  51     if (style->canvasGradient())
  52         return toV8(style->canvasGradient(), creationContext, isolate);
  53
  54     if (style->canvasPattern())
  55         return toV8(style->canvasPattern(), creationContext, isolate);
  56
  57     return v8String(isolate, style->color());
  58 }
  59
  60 static PassRefPtrWillBeRawPtr<CanvasStyle> toCanvasStyle(v8::Handle<v8::Value> value, v8::Isolate* isolate)
  61 {
  62     RefPtrWillBeRawPtr<CanvasStyle> canvasStyle = CanvasStyle::createFromGradient(V8CanvasGradient::toImplWithTypeCheck(isolate, value));
  63     if (canvasStyle)
  64         return canvasStyle;
  65     return CanvasStyle::createFromPattern(V8CanvasPattern::toImplWithTypeCheck(isolate, value));
  66 }
  67
  68 void V8CanvasRenderingContext2D::strokeStyleAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
  69 {
  70     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toImpl(info.Holder());
  71     v8SetReturnValue(info, toV8Object(impl->strokeStyle(), info.Holder(), info.GetIsolate()));
  72 }
  73
  74 void V8CanvasRenderingContext2D::strokeStyleAttributeSetterCustom(v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
  75 {
  76     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toImpl(info.Holder());
  77     if (RefPtrWillBeRawPtr<CanvasStyle> canvasStyle = toCanvasStyle(value, info.GetIsolate())) {
  78         impl->setStrokeStyle(canvasStyle);
  79     } else {
  80         TOSTRING_VOID(V8StringResource<>, colorString, value);
  81         impl->setStrokeColor(colorString);
  82     }
  83 }
  84
  85 void V8CanvasRenderingContext2D::fillStyleAttributeGetterCustom(const v8::PropertyCallbackInfo<v8::Value>& info)
  86 {
  87     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toImpl(info.Holder());
  88     v8SetReturnValue(info, toV8Object(impl->fillStyle(), info.Holder(), info.GetIsolate()));
  89 }
  90
  91 void V8CanvasRenderingContext2D::fillStyleAttributeSetterCustom(v8::Local<v8::Value> value, const v8::PropertyCallbackInfo<void>& info)
  92 {
  93     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toImpl(info.Holder());
  94     if (RefPtrWillBeRawPtr<CanvasStyle> canvasStyle = toCanvasStyle(value, info.GetIsolate())) {
  95         impl->setFillStyle(canvasStyle);
  96     } else {
  97         TOSTRING_VOID(V8StringResource<>, colorString, value);
  98         impl->setFillColor(colorString);
  99     }
 100 }
 101
 102 } // namespace blink