/*
This file is part of the WebKit open source project.
This file has been generated by generate-bindings.pl. DO NOT MODIFY!
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "JSCanvasRenderingContext2D.h"
#include <wtf/GetPtr.h>
#include "CanvasGradient.h"
#include "CanvasPattern.h"
#include "CanvasRenderingContext2D.h"
#include "CanvasStyle.h"
#include "HTMLCanvasElement.h"
#include "JSCanvasGradient.h"
#include "JSHTMLCanvasElement.h"
#include "PlatformString.h"
using namespace KJS;
namespace WebCore {
/* Hash table */
static const HashEntry JSCanvasRenderingContext2DTableEntries[] =
{
{ "lineWidth", JSCanvasRenderingContext2D::LineWidthAttrNum, DontDelete, 0, &JSCanvasRenderingContext2DTableEntries[14] },
{ "shadowOffsetY", JSCanvasRenderingContext2D::ShadowOffsetYAttrNum, DontDelete, 0, 0 },
{ 0, 0, 0, 0, 0 },
{ "strokeStyle", JSCanvasRenderingContext2D::StrokeStyleAttrNum, DontDelete, 0, 0 },
{ "globalAlpha", JSCanvasRenderingContext2D::GlobalAlphaAttrNum, DontDelete, 0, 0 },
{ "lineJoin", JSCanvasRenderingContext2D::LineJoinAttrNum, DontDelete, 0, 0 },
{ 0, 0, 0, 0, 0 },
{ "shadowOffsetX", JSCanvasRenderingContext2D::ShadowOffsetXAttrNum, DontDelete, 0, 0 },
{ "globalCompositeOperation", JSCanvasRenderingContext2D::GlobalCompositeOperationAttrNum, DontDelete, 0, 0 },
{ "lineCap", JSCanvasRenderingContext2D::LineCapAttrNum, DontDelete, 0, 0 },
{ "shadowColor", JSCanvasRenderingContext2D::ShadowColorAttrNum, DontDelete, 0, 0 },
{ "canvas", JSCanvasRenderingContext2D::CanvasAttrNum, DontDelete|ReadOnly, 0, &JSCanvasRenderingContext2DTableEntries[13] },
{ "shadowBlur", JSCanvasRenderingContext2D::ShadowBlurAttrNum, DontDelete, 0, 0 },
{ "miterLimit", JSCanvasRenderingContext2D::MiterLimitAttrNum, DontDelete, 0, 0 },
{ "fillStyle", JSCanvasRenderingContext2D::FillStyleAttrNum, DontDelete, 0, 0 }
};
static const HashTable JSCanvasRenderingContext2DTable =
{
2, 15, JSCanvasRenderingContext2DTableEntries, 13
};
/* Hash table for prototype */
static const HashEntry JSCanvasRenderingContext2DPrototypeTableEntries[] =
{
{ "fill", JSCanvasRenderingContext2D::FillFuncNum, DontDelete|Function, 0, 0 },
{ "lineTo", JSCanvasRenderingContext2D::LineToFuncNum, DontDelete|Function, 2, &JSCanvasRenderingContext2DPrototypeTableEntries[41] },
{ 0, 0, 0, 0, 0 },
{ "save", JSCanvasRenderingContext2D::SaveFuncNum, DontDelete|Function, 0, &JSCanvasRenderingContext2DPrototypeTableEntries[36] },
{ 0, 0, 0, 0, 0 },
{ "restore", JSCanvasRenderingContext2D::RestoreFuncNum, DontDelete|Function, 0, &JSCanvasRenderingContext2DPrototypeTableEntries[46] },
{ "drawImageFromRect", JSCanvasRenderingContext2D::DrawImageFromRectFuncNum, DontDelete|Function, 0, 0 },
{ 0, 0, 0, 0, 0 },
{ "setLineJoin", JSCanvasRenderingContext2D::SetLineJoinFuncNum, DontDelete|Function, 1, 0 },
{ 0, 0, 0, 0, 0 },
{ "createLinearGradient", JSCanvasRenderingContext2D::CreateLinearGradientFuncNum, DontDelete|Function, 4, &JSCanvasRenderingContext2DPrototypeTableEntries[35] },
{ "setShadow", JSCanvasRenderingContext2D::SetShadowFuncNum, DontDelete|Function, 0, 0 },
{ 0, 0, 0, 0, 0 },
{ "clip", JSCanvasRenderingContext2D::ClipFuncNum, DontDelete|Function, 0, &JSCanvasRenderingContext2DPrototypeTableEntries[43] },
{ "rotate", JSCanvasRenderingContext2D::RotateFuncNum, DontDelete|Function, 1, &JSCanvasRenderingContext2DPrototypeTableEntries[38] },
{ "setLineWidth", JSCanvasRenderingContext2D::SetLineWidthFuncNum, DontDelete|Function, 1, 0 },
{ 0, 0, 0, 0, 0 },
{ "translate", JSCanvasRenderingContext2D::TranslateFuncNum, DontDelete|Function, 2, &JSCanvasRenderingContext2DPrototypeTableEntries[45] },
{ "setFillColor", JSCanvasRenderingContext2D::SetFillColorFuncNum, DontDelete|Function, 0, 0 },
{ 0, 0, 0, 0, 0 },
{ "createPattern", JSCanvasRenderingContext2D::CreatePatternFuncNum, DontDelete|Function, 0, 0 },
{ "quadraticCurveTo", JSCanvasRenderingContext2D::QuadraticCurveToFuncNum, DontDelete|Function, 4, 0 },
{ 0, 0, 0, 0, 0 },
{ "scale", JSCanvasRenderingContext2D::ScaleFuncNum, DontDelete|Function, 2, 0 },
{ "setCompositeOperation", JSCanvasRenderingContext2D::SetCompositeOperationFuncNum, DontDelete|Function, 1, &JSCanvasRenderingContext2DPrototypeTableEntries[44] },
{ 0, 0, 0, 0, 0 },
{ "beginPath", JSCanvasRenderingContext2D::BeginPathFuncNum, DontDelete|Function, 0, 0 },
{ 0, 0, 0, 0, 0 },
{ "bezierCurveTo", JSCanvasRenderingContext2D::BezierCurveToFuncNum, DontDelete|Function, 6, 0 },
{ 0, 0, 0, 0, 0 },
{ "moveTo", JSCanvasRenderingContext2D::MoveToFuncNum, DontDelete|Function, 2, &JSCanvasRenderingContext2DPrototypeTableEntries[42] },
{ "clearRect", JSCanvasRenderingContext2D::ClearRectFuncNum, DontDelete|Function, 4, &JSCanvasRenderingContext2DPrototypeTableEntries[40] },
{ 0, 0, 0, 0, 0 },
{ "arc", JSCanvasRenderingContext2D::ArcFuncNum, DontDelete|Function, 6, 0 },
{ "createRadialGradient", JSCanvasRenderingContext2D::CreateRadialGradientFuncNum, DontDelete|Function, 6, 0 },
{ "fillRect", JSCanvasRenderingContext2D::FillRectFuncNum, DontDelete|Function, 4, &JSCanvasRenderingContext2DPrototypeTableEntries[37] },
{ "closePath", JSCanvasRenderingContext2D::ClosePathFuncNum, DontDelete|Function, 0, 0 },
{ "arcTo", JSCanvasRenderingContext2D::ArcToFuncNum, DontDelete|Function, 5, &JSCanvasRenderingContext2DPrototypeTableEntries[39] },
{ "rect", JSCanvasRenderingContext2D::RectFuncNum, DontDelete|Function, 4, 0 },
{ "stroke", JSCanvasRenderingContext2D::StrokeFuncNum, DontDelete|Function, 0, 0 },
{ "setAlpha", JSCanvasRenderingContext2D::SetAlphaFuncNum, DontDelete|Function, 1, 0 },
{ "setLineCap", JSCanvasRenderingContext2D::SetLineCapFuncNum, DontDelete|Function, 1, 0 },
{ "setMiterLimit", JSCanvasRenderingContext2D::SetMiterLimitFuncNum, DontDelete|Function, 1, 0 },
{ "clearShadow", JSCanvasRenderingContext2D::ClearShadowFuncNum, DontDelete|Function, 0, 0 },
{ "setStrokeColor", JSCanvasRenderingContext2D::SetStrokeColorFuncNum, DontDelete|Function, 0, 0 },
{ "strokeRect", JSCanvasRenderingContext2D::StrokeRectFuncNum, DontDelete|Function, 0, 0 },
{ "drawImage", JSCanvasRenderingContext2D::DrawImageFuncNum, DontDelete|Function, 0, 0 }
};
static const HashTable JSCanvasRenderingContext2DPrototypeTable =
{
2, 47, JSCanvasRenderingContext2DPrototypeTableEntries, 35
};
const ClassInfo JSCanvasRenderingContext2DPrototype::info = { "CanvasRenderingContext2DPrototype", 0, &JSCanvasRenderingContext2DPrototypeTable, 0 };
JSObject* JSCanvasRenderingContext2DPrototype::self(ExecState* exec)
{
return KJS::cacheGlobalObject<JSCanvasRenderingContext2DPrototype>(exec, "[[JSCanvasRenderingContext2D.prototype]]");
}
bool JSCanvasRenderingContext2DPrototype::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
{
return getStaticFunctionSlot<JSCanvasRenderingContext2DPrototypeFunction, JSObject>(exec, &JSCanvasRenderingContext2DPrototypeTable, this, propertyName, slot);
}
const ClassInfo JSCanvasRenderingContext2D::info = { "CanvasRenderingContext2D", 0, &JSCanvasRenderingContext2DTable, 0 };
JSCanvasRenderingContext2D::JSCanvasRenderingContext2D(ExecState* exec, CanvasRenderingContext2D* impl)
: m_impl(impl)
{
setPrototype(JSCanvasRenderingContext2DPrototype::self(exec));
}
JSCanvasRenderingContext2D::~JSCanvasRenderingContext2D()
{
ScriptInterpreter::forgetDOMObject(m_impl.get());
}
bool JSCanvasRenderingContext2D::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
{
return getStaticValueSlot<JSCanvasRenderingContext2D, KJS::DOMObject>(exec, &JSCanvasRenderingContext2DTable, this, propertyName, slot);
}
JSValue* JSCanvasRenderingContext2D::getValueProperty(ExecState* exec, int token) const
{
switch (token) {
case CanvasAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return toJS(exec, WTF::getPtr(imp->canvas()));
}
case GlobalAlphaAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsNumber(imp->globalAlpha());
}
case GlobalCompositeOperationAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsString(imp->globalCompositeOperation());
}
case LineWidthAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsNumber(imp->lineWidth());
}
case LineCapAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsString(imp->lineCap());
}
case LineJoinAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsString(imp->lineJoin());
}
case MiterLimitAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsNumber(imp->miterLimit());
}
case ShadowOffsetXAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsNumber(imp->shadowOffsetX());
}
case ShadowOffsetYAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsNumber(imp->shadowOffsetY());
}
case ShadowBlurAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsNumber(imp->shadowBlur());
}
case ShadowColorAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
return jsString(imp->shadowColor());
}
case StrokeStyleAttrNum: {
return strokeStyle(exec);
}
case FillStyleAttrNum: {
return fillStyle(exec);
}
}
return 0;
}
void JSCanvasRenderingContext2D::put(ExecState* exec, const Identifier& propertyName, JSValue* value, int attr)
{
lookupPut<JSCanvasRenderingContext2D, KJS::DOMObject>(exec, propertyName, value, attr, &JSCanvasRenderingContext2DTable, this);
}
void JSCanvasRenderingContext2D::putValueProperty(ExecState* exec, int token, JSValue* value, int /*attr*/)
{
switch (token) {
case GlobalAlphaAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setGlobalAlpha(value->toFloat(exec));
break;
}
case GlobalCompositeOperationAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setGlobalCompositeOperation(valueToStringWithNullCheck(exec, value));
break;
}
case LineWidthAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setLineWidth(value->toFloat(exec));
break;
}
case LineCapAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setLineCap(valueToStringWithNullCheck(exec, value));
break;
}
case LineJoinAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setLineJoin(valueToStringWithNullCheck(exec, value));
break;
}
case MiterLimitAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setMiterLimit(value->toFloat(exec));
break;
}
case ShadowOffsetXAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setShadowOffsetX(value->toFloat(exec));
break;
}
case ShadowOffsetYAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setShadowOffsetY(value->toFloat(exec));
break;
}
case ShadowBlurAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setShadowBlur(value->toFloat(exec));
break;
}
case ShadowColorAttrNum: {
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(impl());
imp->setShadowColor(valueToStringWithNullCheck(exec, value));
break;
}
case StrokeStyleAttrNum: {
setStrokeStyle(exec, value);
break;
}
case FillStyleAttrNum: {
setFillStyle(exec, value);
break;
}
}
}
JSValue* JSCanvasRenderingContext2DPrototypeFunction::callAsFunction(ExecState* exec, JSObject* thisObj, const List& args)
{
if (!thisObj->inherits(&JSCanvasRenderingContext2D::info))
return throwError(exec, TypeError);
CanvasRenderingContext2D* imp = static_cast<CanvasRenderingContext2D*>(static_cast<JSCanvasRenderingContext2D*>(thisObj)->impl());
switch (id) {
case JSCanvasRenderingContext2D::SaveFuncNum: {
imp->save();
return jsUndefined();
}
case JSCanvasRenderingContext2D::RestoreFuncNum: {
imp->restore();
return jsUndefined();
}
case JSCanvasRenderingContext2D::ScaleFuncNum: {
float sx = args[0]->toFloat(exec);
float sy = args[1]->toFloat(exec);
imp->scale(sx, sy);
return jsUndefined();
}
case JSCanvasRenderingContext2D::RotateFuncNum: {
float angle = args[0]->toFloat(exec);
imp->rotate(angle);
return jsUndefined();
}
case JSCanvasRenderingContext2D::TranslateFuncNum: {
float tx = args[0]->toFloat(exec);
float ty = args[1]->toFloat(exec);
imp->translate(tx, ty);
return jsUndefined();
}
case JSCanvasRenderingContext2D::CreateLinearGradientFuncNum: {
float x0 = args[0]->toFloat(exec);
float y0 = args[1]->toFloat(exec);
float x1 = args[2]->toFloat(exec);
float y1 = args[3]->toFloat(exec);
KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->createLinearGradient(x0, y0, x1, y1)));
return result;
}
case JSCanvasRenderingContext2D::CreateRadialGradientFuncNum: {
float x0 = args[0]->toFloat(exec);
float y0 = args[1]->toFloat(exec);
float r0 = args[2]->toFloat(exec);
float x1 = args[3]->toFloat(exec);
float y1 = args[4]->toFloat(exec);
float r1 = args[5]->toFloat(exec);
KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->createRadialGradient(x0, y0, r0, x1, y1, r1)));
return result;
}
case JSCanvasRenderingContext2D::ClearRectFuncNum: {
ExceptionCode ec = 0;
float x = args[0]->toFloat(exec);
float y = args[1]->toFloat(exec);
float width = args[2]->toFloat(exec);
float height = args[3]->toFloat(exec);
imp->clearRect(x, y, width, height, ec);
setDOMException(exec, ec);
return jsUndefined();
}
case JSCanvasRenderingContext2D::FillRectFuncNum: {
ExceptionCode ec = 0;
float x = args[0]->toFloat(exec);
float y = args[1]->toFloat(exec);
float width = args[2]->toFloat(exec);
float height = args[3]->toFloat(exec);
imp->fillRect(x, y, width, height, ec);
setDOMException(exec, ec);
return jsUndefined();
}
case JSCanvasRenderingContext2D::BeginPathFuncNum: {
imp->beginPath();
return jsUndefined();
}
case JSCanvasRenderingContext2D::ClosePathFuncNum: {
imp->closePath();
return jsUndefined();
}
case JSCanvasRenderingContext2D::MoveToFuncNum: {
float x = args[0]->toFloat(exec);
float y = args[1]->toFloat(exec);
imp->moveTo(x, y);
return jsUndefined();
}
case JSCanvasRenderingContext2D::LineToFuncNum: {
float x = args[0]->toFloat(exec);
float y = args[1]->toFloat(exec);
imp->lineTo(x, y);
return jsUndefined();
}
case JSCanvasRenderingContext2D::QuadraticCurveToFuncNum: {
float cpx = args[0]->toFloat(exec);
float cpy = args[1]->toFloat(exec);
float x = args[2]->toFloat(exec);
float y = args[3]->toFloat(exec);
imp->quadraticCurveTo(cpx, cpy, x, y);
return jsUndefined();
}
case JSCanvasRenderingContext2D::BezierCurveToFuncNum: {
float cp1x = args[0]->toFloat(exec);
float cp1y = args[1]->toFloat(exec);
float cp2x = args[2]->toFloat(exec);
float cp2y = args[3]->toFloat(exec);
float x = args[4]->toFloat(exec);
float y = args[5]->toFloat(exec);
imp->bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y);
return jsUndefined();
}
case JSCanvasRenderingContext2D::ArcToFuncNum: {
ExceptionCode ec = 0;
float x1 = args[0]->toFloat(exec);
float y1 = args[1]->toFloat(exec);
float x2 = args[2]->toFloat(exec);
float y2 = args[3]->toFloat(exec);
float radius = args[4]->toFloat(exec);
imp->arcTo(x1, y1, x2, y2, radius, ec);
setDOMException(exec, ec);
return jsUndefined();
}
case JSCanvasRenderingContext2D::RectFuncNum: {
ExceptionCode ec = 0;
float x = args[0]->toFloat(exec);
float y = args[1]->toFloat(exec);
float width = args[2]->toFloat(exec);
float height = args[3]->toFloat(exec);
imp->rect(x, y, width, height, ec);
setDOMException(exec, ec);
return jsUndefined();
}
case JSCanvasRenderingContext2D::ArcFuncNum: {
ExceptionCode ec = 0;
float x = args[0]->toFloat(exec);
float y = args[1]->toFloat(exec);
float radius = args[2]->toFloat(exec);
float startAngle = args[3]->toFloat(exec);
float endAngle = args[4]->toFloat(exec);
bool clockwise = args[5]->toBoolean(exec);
imp->arc(x, y, radius, startAngle, endAngle, clockwise, ec);
setDOMException(exec, ec);
return jsUndefined();
}
case JSCanvasRenderingContext2D::FillFuncNum: {
imp->fill();
return jsUndefined();
}
case JSCanvasRenderingContext2D::StrokeFuncNum: {
imp->stroke();
return jsUndefined();
}
case JSCanvasRenderingContext2D::ClipFuncNum: {
imp->clip();
return jsUndefined();
}
case JSCanvasRenderingContext2D::SetAlphaFuncNum: {
float alpha = args[0]->toFloat(exec);
imp->setAlpha(alpha);
return jsUndefined();
}
case JSCanvasRenderingContext2D::SetCompositeOperationFuncNum: {
String compositeOperation = args[0]->toString(exec);
imp->setCompositeOperation(compositeOperation);
return jsUndefined();
}
case JSCanvasRenderingContext2D::SetLineWidthFuncNum: {
float width = args[0]->toFloat(exec);
imp->setLineWidth(width);
return jsUndefined();
}
case JSCanvasRenderingContext2D::SetLineCapFuncNum: {
String cap = args[0]->toString(exec);
imp->setLineCap(cap);
return jsUndefined();
}
case JSCanvasRenderingContext2D::SetLineJoinFuncNum: {
String join = args[0]->toString(exec);
imp->setLineJoin(join);
return jsUndefined();
}
case JSCanvasRenderingContext2D::SetMiterLimitFuncNum: {
float limit = args[0]->toFloat(exec);
imp->setMiterLimit(limit);
return jsUndefined();
}
case JSCanvasRenderingContext2D::ClearShadowFuncNum: {
imp->clearShadow();
return jsUndefined();
}
case JSCanvasRenderingContext2D::SetStrokeColorFuncNum: {
return static_cast<JSCanvasRenderingContext2D*>(thisObj)->setStrokeColor(exec, args);
}
case JSCanvasRenderingContext2D::SetFillColorFuncNum: {
return static_cast<JSCanvasRenderingContext2D*>(thisObj)->setFillColor(exec, args);
}
case JSCanvasRenderingContext2D::StrokeRectFuncNum: {
return static_cast<JSCanvasRenderingContext2D*>(thisObj)->strokeRect(exec, args);
}
case JSCanvasRenderingContext2D::DrawImageFuncNum: {
return static_cast<JSCanvasRenderingContext2D*>(thisObj)->drawImage(exec, args);
}
case JSCanvasRenderingContext2D::DrawImageFromRectFuncNum: {
return static_cast<JSCanvasRenderingContext2D*>(thisObj)->drawImageFromRect(exec, args);
}
case JSCanvasRenderingContext2D::SetShadowFuncNum: {
return static_cast<JSCanvasRenderingContext2D*>(thisObj)->setShadow(exec, args);
}
case JSCanvasRenderingContext2D::CreatePatternFuncNum: {
return static_cast<JSCanvasRenderingContext2D*>(thisObj)->createPattern(exec, args);
}
}
return 0;
}
KJS::JSValue* toJS(KJS::ExecState* exec, CanvasRenderingContext2D* obj)
{
return KJS::cacheDOMObject<CanvasRenderingContext2D, JSCanvasRenderingContext2D>(exec, obj);
}
CanvasRenderingContext2D* toCanvasRenderingContext2D(KJS::JSValue* val)
{
return val->isObject(&JSCanvasRenderingContext2D::info) ? static_cast<JSCanvasRenderingContext2D*>(val)->impl() : 0;
}
}