// description: get pixel from image buffer
// syntax: imageObj.getPixel(x, y);
void NaImage::GetPixel(V8_FUNCTION_ARGS)
{
Isolate *isolate = args.GetIsolate();
Local<Object> obj = args.This();
NaImage *pImage = reinterpret_cast<NaImage*>(UnwrapObject(obj));
if (pImage == nullptr)
{
// error
args.GetReturnValue().Set(Integer::New(isolate, -1));
return;
}
if (args.Length() < 2)
{
// error
args.GetReturnValue().Set(Integer::New(isolate, -1));
return;
}
int x = args[0]->Int32Value();
int y = args[1]->Int32Value();
HGDIOBJ hOldBitmap = ::SelectObject(pImage->m_hMemoryDC, pImage->m_hBitmap);
COLORREF color = ::GetPixel(pImage->m_hMemoryDC, x, y);
::SelectObject(pImage->m_hMemoryDC, hOldBitmap);
// return
args.GetReturnValue().Set(Integer::New(isolate, color));
}
void NaImage::SetHeight(V8_SETTER_ARGS)
{
NaImage *pImage = reinterpret_cast<NaImage*>(UnwrapObject(info.This()));
if (pImage)
{
// Not Impl
}
}
JSObject *
WrapperFactory::WaiveXray(JSContext *cx, JSObject *obj)
{
obj = UnwrapObject(obj);
MOZ_ASSERT(!js::IsInnerObject(obj));
JSObject *waiver = GetXrayWaiver(obj);
if (waiver)
return waiver;
return CreateXrayWaiver(cx, obj);
}
static JSObject *
GetCurrentOuter(JSContext *cx, JSObject *obj)
{
obj = JS_ObjectToOuterObject(cx, obj);
if (IsWrapper(obj) && !js::GetObjectClass(obj)->ext.innerObject) {
obj = UnwrapObject(obj);
NS_ASSERTION(js::GetObjectClass(obj)->ext.innerObject,
"weird object, expecting an outer window proxy");
}
return obj;
}
JSObject *
WrapperFactory::GetXrayWaiver(JSObject *obj)
{
// Object should come fully unwrapped but outerized.
MOZ_ASSERT(obj == UnwrapObject(obj));
MOZ_ASSERT(!js::GetObjectClass(obj)->ext.outerObject);
XPCWrappedNativeScope *scope = GetObjectScope(obj);
MOZ_ASSERT(scope);
if (!scope->mWaiverWrapperMap)
return NULL;
return xpc_UnmarkGrayObject(scope->mWaiverWrapperMap->Find(obj));
}
JSObject *
WrapperFactory::WaiveXray(JSContext *cx, JSObject *obj)
{
obj = UnwrapObject(obj);
// We have to make sure that if we're wrapping an outer window, that
// the .wrappedJSObject also wraps the outer window.
obj = GetCurrentOuter(cx, obj);
{
// See if we already have a waiver wrapper for this object.
CompartmentPrivate *priv =
(CompartmentPrivate *)JS_GetCompartmentPrivate(js::GetObjectCompartment(obj));
JSObject *wobj = nsnull;
if (priv && priv->waiverWrapperMap) {
wobj = priv->waiverWrapperMap->Find(obj);
xpc_UnmarkGrayObject(wobj);
}
// No wrapper yet, make one.
if (!wobj) {
JSObject *proto = js::GetObjectProto(obj);
if (proto && !(proto = WaiveXray(cx, proto)))
return nsnull;
JSAutoEnterCompartment ac;
if (!ac.enter(cx, obj) || !JS_WrapObject(cx, &proto))
return nsnull;
wobj = Wrapper::New(cx, obj, proto, JS_GetGlobalForObject(cx, obj),
&WaiveXrayWrapperWrapper);
if (!wobj)
return nsnull;
// Add the new wrapper so we find it next time.
if (priv) {
if (!priv->waiverWrapperMap) {
priv->waiverWrapperMap = JSObject2JSObjectMap::newMap(XPC_WRAPPER_MAP_SIZE);
if (!priv->waiverWrapperMap)
return nsnull;
}
if (!priv->waiverWrapperMap->Add(obj, wobj))
return nsnull;
}
}
obj = wobj;
}
return obj;
}
// description: height property getter/setter
void NaImage::GetHeight(V8_GETTER_ARGS)
{
NaImage *pImage = reinterpret_cast<NaImage*>(UnwrapObject(info.This()));
Isolate *isolate = info.GetIsolate();
int nHeight = 0;
if (pImage)
{
nHeight = pImage->m_rc.bottom - pImage->m_rc.top;
}
info.GetReturnValue().Set(
Integer::New(isolate, nHeight)
);
}
// description: width property getter/setter
void NaImage::GetWidth(V8_GETTER_ARGS)
{
NaImage *pImage = reinterpret_cast<NaImage*>(UnwrapObject(info.This()));
Isolate *isolate = info.GetIsolate();
int nWidth = 0;
if (pImage)
{
nWidth = pImage->m_rc.right - pImage->m_rc.left;
}
info.GetReturnValue().Set(
Integer::New(isolate, nWidth)
);
}