| /* |
| * Copyright (C) 2007-2009 Google Inc. All rights reserved. |
| * Copyright (C) 2010 Torch Mobile (Beijing) Co. Ltd. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "bindings/core/v8/V8HTMLCanvasElement.h" |
| |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "bindings/core/v8/V8Binding.h" |
| #include "bindings/core/v8/V8CanvasRenderingContext2D.h" |
| #include "bindings/core/v8/V8Node.h" |
| #include "bindings/core/v8/V8WebGLRenderingContext.h" |
| #include "core/html/HTMLCanvasElement.h" |
| #include "core/html/canvas/Canvas2DContextAttributes.h" |
| #include "core/html/canvas/CanvasRenderingContext.h" |
| #include "core/html/canvas/WebGLContextAttributes.h" |
| #include "core/inspector/InspectorCanvasInstrumentation.h" |
| #include "wtf/MathExtras.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| void V8HTMLCanvasElement::getContextMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info) |
| { |
| v8::Handle<v8::Object> holder = info.Holder(); |
| v8::Isolate* isolate = info.GetIsolate(); |
| HTMLCanvasElement* impl = V8HTMLCanvasElement::toImpl(holder); |
| TOSTRING_VOID(V8StringResource<>, contextIdResource, info[0]); |
| String contextId = contextIdResource; |
| RefPtrWillBeRawPtr<CanvasContextAttributes> attributes = nullptr; |
| if (contextId == "webgl" || contextId == "experimental-webgl") { |
| RefPtrWillBeRawPtr<WebGLContextAttributes> webGLAttributes = WebGLContextAttributes::create(); |
| if (info.Length() > 1 && info[1]->IsObject()) { |
| v8::Handle<v8::Object> jsAttributes = info[1]->ToObject(); |
| v8::Handle<v8::String> alpha = v8AtomicString(isolate, "alpha"); |
| if (jsAttributes->Has(alpha) && !isUndefinedOrNull(jsAttributes->Get(alpha))) |
| webGLAttributes->setAlpha(jsAttributes->Get(alpha)->BooleanValue()); |
| v8::Handle<v8::String> depth = v8AtomicString(isolate, "depth"); |
| if (jsAttributes->Has(depth) && !isUndefinedOrNull(jsAttributes->Get(depth))) |
| webGLAttributes->setDepth(jsAttributes->Get(depth)->BooleanValue()); |
| v8::Handle<v8::String> stencil = v8AtomicString(isolate, "stencil"); |
| if (jsAttributes->Has(stencil) && !isUndefinedOrNull(jsAttributes->Get(stencil))) |
| webGLAttributes->setStencil(jsAttributes->Get(stencil)->BooleanValue()); |
| v8::Handle<v8::String> antialias = v8AtomicString(isolate, "antialias"); |
| if (jsAttributes->Has(antialias) && !isUndefinedOrNull(jsAttributes->Get(antialias))) |
| webGLAttributes->setAntialias(jsAttributes->Get(antialias)->BooleanValue()); |
| v8::Handle<v8::String> premultipliedAlpha = v8AtomicString(isolate, "premultipliedAlpha"); |
| if (jsAttributes->Has(premultipliedAlpha) && !isUndefinedOrNull(jsAttributes->Get(premultipliedAlpha))) |
| webGLAttributes->setPremultipliedAlpha(jsAttributes->Get(premultipliedAlpha)->BooleanValue()); |
| v8::Handle<v8::String> preserveDrawingBuffer = v8AtomicString(isolate, "preserveDrawingBuffer"); |
| if (jsAttributes->Has(preserveDrawingBuffer) && !isUndefinedOrNull(jsAttributes->Get(preserveDrawingBuffer))) |
| webGLAttributes->setPreserveDrawingBuffer(jsAttributes->Get(preserveDrawingBuffer)->BooleanValue()); |
| v8::Handle<v8::String> failIfMajorPerformanceCaveat = v8AtomicString(isolate, "failIfMajorPerformanceCaveat"); |
| if (jsAttributes->Has(failIfMajorPerformanceCaveat) && !isUndefinedOrNull(jsAttributes->Get(failIfMajorPerformanceCaveat))) |
| webGLAttributes->setFailIfMajorPerformanceCaveat(jsAttributes->Get(failIfMajorPerformanceCaveat)->BooleanValue()); |
| } |
| attributes = webGLAttributes; |
| } else { |
| RefPtrWillBeRawPtr<Canvas2DContextAttributes> canvas2DAttributes = Canvas2DContextAttributes::create(); |
| if (info.Length() > 1 && info[1]->IsObject()) { |
| v8::Handle<v8::Object> jsAttributes = info[1]->ToObject(); |
| v8::Handle<v8::String> alpha = v8AtomicString(isolate, "alpha"); |
| if (jsAttributes->Has(alpha) && !isUndefinedOrNull(jsAttributes->Get(alpha))) |
| canvas2DAttributes->setAlpha(jsAttributes->Get(alpha)->BooleanValue()); |
| } |
| attributes = canvas2DAttributes; |
| } |
| CanvasRenderingContext* result = impl->getContext(contextId, attributes.get()); |
| if (!result) { |
| v8SetReturnValueNull(info); |
| return; |
| } |
| if (result->is2d()) { |
| v8::Handle<v8::Value> v8Result = toV8(toCanvasRenderingContext2D(result), info.Holder(), info.GetIsolate()); |
| if (InspectorInstrumentation::canvasAgentEnabled(&impl->document())) { |
| ScriptState* scriptState = ScriptState::current(isolate); |
| ScriptValue context(scriptState, v8Result); |
| ScriptValue wrapped = InspectorInstrumentation::wrapCanvas2DRenderingContextForInstrumentation(&impl->document(), context); |
| if (!wrapped.isEmpty()) { |
| v8SetReturnValue(info, wrapped.v8Value()); |
| return; |
| } |
| } |
| v8SetReturnValue(info, v8Result); |
| return; |
| } |
| if (result->is3d()) { |
| v8::Handle<v8::Value> v8Result = toV8(toWebGLRenderingContext(result), info.Holder(), info.GetIsolate()); |
| if (InspectorInstrumentation::canvasAgentEnabled(&impl->document())) { |
| ScriptState* scriptState = ScriptState::current(isolate); |
| ScriptValue glContext(scriptState, v8Result); |
| ScriptValue wrapped = InspectorInstrumentation::wrapWebGLRenderingContextForInstrumentation(&impl->document(), glContext); |
| if (!wrapped.isEmpty()) { |
| v8SetReturnValue(info, wrapped.v8Value()); |
| return; |
| } |
| } |
| v8SetReturnValue(info, v8Result); |
| return; |
| } |
| ASSERT_NOT_REACHED(); |
| v8SetReturnValueNull(info); |
| } |
| |
| void V8HTMLCanvasElement::toDataURLMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info) |
| { |
| v8::Handle<v8::Object> holder = info.Holder(); |
| HTMLCanvasElement* canvas = V8HTMLCanvasElement::toImpl(holder); |
| ExceptionState exceptionState(ExceptionState::ExecutionContext, "toDataURL", "HTMLCanvasElement", info.Holder(), info.GetIsolate()); |
| |
| TOSTRING_VOID(V8StringResource<>, type, info[0]); |
| double quality; |
| double* qualityPtr = 0; |
| if (info.Length() > 1 && info[1]->IsNumber()) { |
| quality = info[1]->NumberValue(); |
| qualityPtr = &quality; |
| } |
| |
| String result = canvas->toDataURL(type, qualityPtr, exceptionState); |
| exceptionState.throwIfNeeded(); |
| v8SetReturnValueStringOrUndefined(info, result, info.GetIsolate()); |
| } |
| |
| } // namespace blink |
