void JavaObject::wrap(Handle<Object> jsObject)
{
ASSERT(handle_.IsEmpty());
ASSERT(jsObject->InternalFieldCount() > 0);
handle_ = v8::Persistent<v8::Object>::New(jsObject);
handle_->SetPointerInInternalField(0, this);
}
v8::Handle<v8::Value> v8Sprite::RenderTo(const v8::Arguments &args) {
HandleScope scope;
v8Sprite *spriteWrapper = ObjectWrap::Unwrap<v8Sprite>(args.Holder());
if (NULL == spriteWrapper) {
return ThrowException(v8::Exception::ReferenceError(String::NewSymbol(
"Sprite::renderTo(): NULL Holder."
)));
}
// This is kinda strange, but I can't think of a simpler way to handle
// dynamically accepting both Canvas and Window in a secure (e.g. not
// depending on (mutable) JavaScript state to determine which to use) way.
// We'll manually unwrap the internal pointer, and use RTTI to determine
// which class of instance we have been passed.
Handle<Object> instanceHandle = args[0]->ToObject();
if (instanceHandle.IsEmpty() || 0 == instanceHandle->InternalFieldCount()) {
return ThrowException(v8::Exception::ReferenceError(String::NewSymbol(
"Sprite::render(): NULL destination."
)));
}
ObjectWrap *instance = static_cast<ObjectWrap *>(
instanceHandle->GetAlignedPointerFromInternalField(0)
);
v8Canvas *destinationCanvas = dynamic_cast<v8Canvas *>(instance);
v8Window *destinationWindow = dynamic_cast<v8Window *>(instance);
if (destinationCanvas) {
spriteWrapper->sprite->renderTo(destinationCanvas->wrappedCanvas());
}
else {
spriteWrapper->sprite->renderTo(destinationWindow->wrappedWindow());
}
return v8::Undefined();
}
jsvalue JsEngine::AnyFromV8(Handle<Value> value, Handle<Object> thisArg)
{
jsvalue v;
// Initialize to a generic error.
v.type = JSVALUE_TYPE_UNKNOWN_ERROR;
v.length = 0;
v.value.str = 0;
if (value->IsNull() || value->IsUndefined()) {
v.type = JSVALUE_TYPE_NULL;
}
else if (value->IsBoolean()) {
v.type = JSVALUE_TYPE_BOOLEAN;
v.value.i32 = value->BooleanValue() ? 1 : 0;
}
else if (value->IsInt32()) {
v.type = JSVALUE_TYPE_INTEGER;
v.value.i32 = value->Int32Value();
}
else if (value->IsUint32()) {
v.type = JSVALUE_TYPE_INDEX;
v.value.i64 = value->Uint32Value();
}
else if (value->IsNumber()) {
v.type = JSVALUE_TYPE_NUMBER;
v.value.num = value->NumberValue();
}
else if (value->IsString()) {
v = StringFromV8(value);
}
else if (value->IsDate()) {
v.type = JSVALUE_TYPE_DATE;
v.value.num = value->NumberValue();
}
else if (value->IsArray()) {
Handle<Array> object = Handle<Array>::Cast(value->ToObject());
v.length = object->Length();
jsvalue* array = new jsvalue[v.length];
if (array != NULL) {
for(int i = 0; i < v.length; i++) {
array[i] = AnyFromV8(object->Get(i));
}
v.type = JSVALUE_TYPE_ARRAY;
v.value.arr = array;
}
}
else if (value->IsFunction()) {
Handle<Function> function = Handle<Function>::Cast(value);
jsvalue* array = new jsvalue[2];
if (array != NULL) {
array[0].value.ptr = new Persistent<Object>(Persistent<Function>::New(function));
array[0].length = 0;
array[0].type = JSVALUE_TYPE_WRAPPED;
if (!thisArg.IsEmpty()) {
array[1].value.ptr = new Persistent<Object>(Persistent<Object>::New(thisArg));
array[1].length = 0;
array[1].type = JSVALUE_TYPE_WRAPPED;
} else {
array[1].value.ptr = NULL;
array[1].length = 0;
array[1].type = JSVALUE_TYPE_NULL;
}
v.type = JSVALUE_TYPE_FUNCTION;
v.value.arr = array;
}
}
else if (value->IsObject()) {
Handle<Object> obj = Handle<Object>::Cast(value);
if (obj->InternalFieldCount() == 1)
v = ManagedFromV8(obj);
else
v = WrappedFromV8(obj);
}
return v;
}