| /* |
| * Copyright (C) 2007 Apple 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "JSHTMLCanvasElement.h" |
| |
| #include "CanvasContextAttributes.h" |
| #include "HTMLCanvasElement.h" |
| #include "InspectorCanvasInstrumentation.h" |
| #include "JSCanvasRenderingContext2D.h" |
| #include "ScriptObject.h" |
| #if ENABLE(WEBGL) |
| #include "JSWebGLRenderingContext.h" |
| #include "WebGLContextAttributes.h" |
| #endif |
| #include <wtf/GetPtr.h> |
| |
| using namespace JSC; |
| |
| namespace WebCore { |
| |
| JSValue JSHTMLCanvasElement::getContext(ExecState* exec) |
| { |
| HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(impl()); |
| const String& contextId = exec->argument(0).toString(exec)->value(exec); |
| RefPtr<CanvasContextAttributes> attrs; |
| #if ENABLE(WEBGL) |
| if (contextId == "experimental-webgl" || contextId == "webkit-3d") { |
| attrs = WebGLContextAttributes::create(); |
| WebGLContextAttributes* webGLAttrs = static_cast<WebGLContextAttributes*>(attrs.get()); |
| if (exec->argumentCount() > 1 && exec->argument(1).isObject()) { |
| JSObject* jsAttrs = exec->argument(1).getObject(); |
| Identifier alpha(exec, "alpha"); |
| if (jsAttrs->hasProperty(exec, alpha)) |
| webGLAttrs->setAlpha(jsAttrs->get(exec, alpha).toBoolean(exec)); |
| Identifier depth(exec, "depth"); |
| if (jsAttrs->hasProperty(exec, depth)) |
| webGLAttrs->setDepth(jsAttrs->get(exec, depth).toBoolean(exec)); |
| Identifier stencil(exec, "stencil"); |
| if (jsAttrs->hasProperty(exec, stencil)) |
| webGLAttrs->setStencil(jsAttrs->get(exec, stencil).toBoolean(exec)); |
| Identifier antialias(exec, "antialias"); |
| if (jsAttrs->hasProperty(exec, antialias)) |
| webGLAttrs->setAntialias(jsAttrs->get(exec, antialias).toBoolean(exec)); |
| Identifier premultipliedAlpha(exec, "premultipliedAlpha"); |
| if (jsAttrs->hasProperty(exec, premultipliedAlpha)) |
| webGLAttrs->setPremultipliedAlpha(jsAttrs->get(exec, premultipliedAlpha).toBoolean(exec)); |
| Identifier preserveDrawingBuffer(exec, "preserveDrawingBuffer"); |
| if (jsAttrs->hasProperty(exec, preserveDrawingBuffer)) |
| webGLAttrs->setPreserveDrawingBuffer(jsAttrs->get(exec, preserveDrawingBuffer).toBoolean(exec)); |
| } |
| } |
| #endif |
| CanvasRenderingContext* context = canvas->getContext(contextId, attrs.get()); |
| if (!context) |
| return jsNull(); |
| JSValue jsValue = toJS(exec, globalObject(), WTF::getPtr(context)); |
| if (InspectorInstrumentation::canvasAgentEnabled(canvas->document())) { |
| ScriptObject contextObject(exec, jsValue.getObject()); |
| ScriptObject wrapped; |
| if (context->is2d()) |
| wrapped = InspectorInstrumentation::wrapCanvas2DRenderingContextForInstrumentation(canvas->document(), contextObject); |
| #if ENABLE(WEBGL) |
| else if (context->is3d()) |
| wrapped = InspectorInstrumentation::wrapWebGLRenderingContextForInstrumentation(canvas->document(), contextObject); |
| #endif |
| if (!wrapped.hasNoValue()) |
| return wrapped.jsValue(); |
| } |
| return jsValue; |
| } |
| |
| JSValue JSHTMLCanvasElement::toDataURL(ExecState* exec) |
| { |
| HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(impl()); |
| ExceptionCode ec = 0; |
| |
| const String& type = valueToStringWithUndefinedOrNullCheck(exec, exec->argument(0)); |
| double quality; |
| double* qualityPtr = 0; |
| if (exec->argumentCount() > 1) { |
| JSValue v = exec->argument(1); |
| if (v.isNumber()) { |
| quality = v.toNumber(exec); |
| qualityPtr = &quality; |
| } |
| } |
| |
| JSValue result = JSC::jsString(exec, canvas->toDataURL(type, qualityPtr, ec)); |
| setDOMException(exec, ec); |
| return result; |
| } |
| |
| } // namespace WebCore |