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      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 "V8CanvasRenderingContext2D.h"
     33 
     34 #include "CanvasGradient.h"
     35 #include "CanvasRenderingContext2D.h"
     36 #include "CanvasPattern.h"
     37 #include "CanvasStyle.h"
     38 #include "ExceptionCode.h"
     39 #include "FloatRect.h"
     40 
     41 #include "V8Binding.h"
     42 #include "V8CanvasGradient.h"
     43 #include "V8CanvasPattern.h"
     44 #include "V8HTMLCanvasElement.h"
     45 #include "V8HTMLImageElement.h"
     46 #include "V8HTMLVideoElement.h"
     47 #include "V8ImageData.h"
     48 #include "V8Proxy.h"
     49 
     50 namespace WebCore {
     51 
     52 static v8::Handle<v8::Value> toV8Object(CanvasStyle* style)
     53 {
     54     if (style->canvasGradient())
     55         return toV8(style->canvasGradient());
     56 
     57     if (style->canvasPattern())
     58         return toV8(style->canvasPattern());
     59 
     60     return v8String(style->color());
     61 }
     62 
     63 static PassRefPtr<CanvasStyle> toCanvasStyle(v8::Handle<v8::Value> value)
     64 {
     65     if (value->IsString())
     66         return CanvasStyle::createFromString(toWebCoreString(value));
     67 
     68     if (V8CanvasGradient::HasInstance(value))
     69         return CanvasStyle::createFromGradient(V8CanvasGradient::toNative(v8::Handle<v8::Object>::Cast(value)));
     70 
     71     if (V8CanvasPattern::HasInstance(value))
     72         return CanvasStyle::createFromPattern(V8CanvasPattern::toNative(v8::Handle<v8::Object>::Cast(value)));
     73 
     74     return 0;
     75 }
     76 
     77 v8::Handle<v8::Value> V8CanvasRenderingContext2D::strokeStyleAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
     78 {
     79     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toNative(info.Holder());
     80     return toV8Object(impl->strokeStyle());
     81 }
     82 
     83 void V8CanvasRenderingContext2D::strokeStyleAccessorSetter(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::AccessorInfo& info)
     84 {
     85     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toNative(info.Holder());
     86     impl->setStrokeStyle(toCanvasStyle(value));
     87 }
     88 
     89 v8::Handle<v8::Value> V8CanvasRenderingContext2D::fillStyleAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
     90 {
     91     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toNative(info.Holder());
     92     return toV8Object(impl->fillStyle());
     93 }
     94 
     95 void V8CanvasRenderingContext2D::fillStyleAccessorSetter(v8::Local<v8::String> name, v8::Local<v8::Value> value, const v8::AccessorInfo& info)
     96 {
     97     CanvasRenderingContext2D* impl = V8CanvasRenderingContext2D::toNative(info.Holder());
     98     impl->setFillStyle(toCanvasStyle(value));
     99 }
    100 
    101 } // namespace WebCore
    102