v8::Handle<v8::Value> V8CanvasRenderingContext2D::drawImageCallback(const v8::Arguments& args)
{
INC_STATS("DOM.CanvasRenderingContext2D.drawImage()");
CanvasRenderingContext2D* context = V8CanvasRenderingContext2D::toNative(args.Holder());
v8::Handle<v8::Value> arg = args[0];
if (V8HTMLImageElement::HasInstance(arg)) {
ExceptionCode ec = 0;
HTMLImageElement* imageElement = V8HTMLImageElement::toNative(v8::Handle<v8::Object>::Cast(arg));
switch (args.Length()) {
case 3:
context->drawImage(imageElement, toFloat(args[1]), toFloat(args[2]));
break;
case 5:
context->drawImage(imageElement, toFloat(args[1]), toFloat(args[2]), toFloat(args[3]), toFloat(args[4]), ec);
if (ec != 0) {
V8Proxy::setDOMException(ec);
return notHandledByInterceptor();
}
break;
case 9:
context->drawImage(imageElement,
FloatRect(toFloat(args[1]), toFloat(args[2]), toFloat(args[3]), toFloat(args[4])),
FloatRect(toFloat(args[5]), toFloat(args[6]), toFloat(args[7]), toFloat(args[8])),
ec);
if (ec != 0) {
V8Proxy::setDOMException(ec);
return notHandledByInterceptor();
}
break;
default:
return throwError("drawImage: Invalid number of arguments", V8Proxy::SyntaxError);
}
return v8::Undefined();
}
// HTMLCanvasElement
if (V8HTMLCanvasElement::HasInstance(arg)) {
ExceptionCode ec = 0;
HTMLCanvasElement* canvasElement = V8HTMLCanvasElement::toNative(v8::Handle<v8::Object>::Cast(arg));
switch (args.Length()) {
case 3:
context->drawImage(canvasElement, toFloat(args[1]), toFloat(args[2]));
break;
case 5:
context->drawImage(canvasElement, toFloat(args[1]), toFloat(args[2]), toFloat(args[3]), toFloat(args[4]), ec);
if (ec != 0) {
V8Proxy::setDOMException(ec);
return notHandledByInterceptor();
}
break;
case 9:
context->drawImage(canvasElement,
FloatRect(toFloat(args[1]), toFloat(args[2]), toFloat(args[3]), toFloat(args[4])),
FloatRect(toFloat(args[5]), toFloat(args[6]), toFloat(args[7]), toFloat(args[8])),
ec);
if (ec != 0) {
V8Proxy::setDOMException(ec);
return notHandledByInterceptor();
}
break;
default:
return throwError("drawImage: Invalid number of arguments", V8Proxy::SyntaxError);
}
return v8::Undefined();
}
#if ENABLE(VIDEO)
// HTMLVideoElement
if (V8HTMLVideoElement::HasInstance(arg)) {
ExceptionCode ec = 0;
HTMLVideoElement* videoElement = V8HTMLVideoElement::toNative(v8::Handle<v8::Object>::Cast(arg));
switch (args.Length()) {
case 3:
context->drawImage(videoElement, toFloat(args[1]), toFloat(args[2]));
break;
case 5:
context->drawImage(videoElement, toFloat(args[1]), toFloat(args[2]), toFloat(args[3]), toFloat(args[4]), ec);
if (ec != 0) {
V8Proxy::setDOMException(ec);
return notHandledByInterceptor();
}
break;
case 9:
context->drawImage(videoElement,
FloatRect(toFloat(args[1]), toFloat(args[2]), toFloat(args[3]), toFloat(args[4])),
FloatRect(toFloat(args[5]), toFloat(args[6]), toFloat(args[7]), toFloat(args[8])),
ec);
if (ec != 0) {
V8Proxy::setDOMException(ec);
return notHandledByInterceptor();
}
break;
default:
return throwError("drawImage: Invalid number of arguments", V8Proxy::SyntaxError);
}
return v8::Undefined();
}
#endif
V8Proxy::setDOMException(TYPE_MISMATCH_ERR);
return notHandledByInterceptor();
}
JSValue* JSCanvasRenderingContext2D::drawImage(ExecState* exec, const ArgList& args)
{
CanvasRenderingContext2D* context = impl();
// DrawImage has three variants:
// drawImage(img, dx, dy)
// drawImage(img, dx, dy, dw, dh)
// drawImage(img, sx, sy, sw, sh, dx, dy, dw, dh)
// Composite operation is specified with globalCompositeOperation.
// The img parameter can be a <img> or <canvas> element.
JSValue* value = args[0];
if (!value->isObject())
return throwError(exec, TypeError);
JSObject* o = static_cast<JSObject*>(value);
ExceptionCode ec = 0;
if (o->inherits(&JSHTMLImageElement::s_info)) {
HTMLImageElement* imgElt = static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(args[0])->impl());
switch (args.size()) {
case 3:
context->drawImage(imgElt, args[1]->toFloat(exec), args[2]->toFloat(exec));
break;
case 5:
context->drawImage(imgElt, args[1]->toFloat(exec), args[2]->toFloat(exec),
args[3]->toFloat(exec), args[4]->toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(imgElt, FloatRect(args[1]->toFloat(exec), args[2]->toFloat(exec),
args[3]->toFloat(exec), args[4]->toFloat(exec)),
FloatRect(args[5]->toFloat(exec), args[6]->toFloat(exec),
args[7]->toFloat(exec), args[8]->toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
} else if (o->inherits(&JSHTMLCanvasElement::s_info)) {
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(static_cast<JSHTMLElement*>(args[0])->impl());
switch (args.size()) {
case 3:
context->drawImage(canvas, args[1]->toFloat(exec), args[2]->toFloat(exec));
break;
case 5:
context->drawImage(canvas, args[1]->toFloat(exec), args[2]->toFloat(exec),
args[3]->toFloat(exec), args[4]->toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(canvas, FloatRect(args[1]->toFloat(exec), args[2]->toFloat(exec),
args[3]->toFloat(exec), args[4]->toFloat(exec)),
FloatRect(args[5]->toFloat(exec), args[6]->toFloat(exec),
args[7]->toFloat(exec), args[8]->toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
} else {
setDOMException(exec, TYPE_MISMATCH_ERR);
return 0;
}
return jsUndefined();
}
JSValue JSCanvasRenderingContext2D::drawImage(ExecState* exec, const ArgList& args)
{
CanvasRenderingContext2D* context = impl();
// DrawImage has three variants:
// drawImage(img, dx, dy)
// drawImage(img, dx, dy, dw, dh)
// drawImage(img, sx, sy, sw, sh, dx, dy, dw, dh)
// Composite operation is specified with globalCompositeOperation.
// The img parameter can be a <img> or <canvas> element.
JSValue value = args.at(0);
if (!value.isObject())
return throwError(exec, TypeError);
JSObject* o = asObject(value);
ExceptionCode ec = 0;
if (o->inherits(&JSHTMLImageElement::s_info)) {
HTMLImageElement* imgElt = static_cast<HTMLImageElement*>(static_cast<JSHTMLElement*>(o)->impl());
switch (args.size()) {
case 3:
context->drawImage(imgElt, args.at(1).toFloat(exec), args.at(2).toFloat(exec));
break;
case 5:
context->drawImage(imgElt, args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(imgElt, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec)),
FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec),
args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
} else if (o->inherits(&JSHTMLCanvasElement::s_info)) {
HTMLCanvasElement* canvas = static_cast<HTMLCanvasElement*>(static_cast<JSHTMLElement*>(o)->impl());
switch (args.size()) {
case 3:
context->drawImage(canvas, args.at(1).toFloat(exec), args.at(2).toFloat(exec));
break;
case 5:
context->drawImage(canvas, args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(canvas, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec)),
FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec),
args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
#if ENABLE(VIDEO)
} else if (o->inherits(&JSHTMLVideoElement::s_info)) {
HTMLVideoElement* video = static_cast<HTMLVideoElement*>(static_cast<JSHTMLElement*>(o)->impl());
switch (args.size()) {
case 3:
context->drawImage(video, args.at(1).toFloat(exec), args.at(2).toFloat(exec));
break;
case 5:
context->drawImage(video, args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec), ec);
setDOMException(exec, ec);
break;
case 9:
context->drawImage(video, FloatRect(args.at(1).toFloat(exec), args.at(2).toFloat(exec),
args.at(3).toFloat(exec), args.at(4).toFloat(exec)),
FloatRect(args.at(5).toFloat(exec), args.at(6).toFloat(exec),
args.at(7).toFloat(exec), args.at(8).toFloat(exec)), ec);
setDOMException(exec, ec);
break;
default:
return throwError(exec, SyntaxError);
}
#endif
} else {
setDOMException(exec, TYPE_MISMATCH_ERR);
}
return jsUndefined();
}
