V8WebGLArrayCustom.h [plain text]
#include "config.h"
#if ENABLE(3D_CANVAS)
#include "WebGLArrayBuffer.h"
#include "V8Binding.h"
#include "V8WebGLArrayBuffer.h"
#include "V8CustomBinding.h"
#include "V8Proxy.h"
namespace WebCore {
template<class ArrayClass>
v8::Handle<v8::Value> constructWebGLArray(const v8::Arguments& args,
int classIndex)
{
if (!args.IsConstructCall())
return throwError("DOM object constructor cannot be called as a function.");
int argLen = args.Length();
if (argLen == 0) {
return args.Holder();
}
if (V8WebGLArrayBuffer::HasInstance(args[0])) {
if (argLen > 3)
return throwError("Wrong number of arguments to new WebGL<T>Array(WebGLArrayBuffer, int, int)");
WebGLArrayBuffer* buf = V8WebGLArrayBuffer::toNative(args[0]->ToObject());
if (buf == NULL)
return throwError("Could not convert argument 0 to a WebGLArrayBuffer");
bool ok;
int offset = 0;
if (argLen > 1) {
offset = toInt32(args[1], ok);
if (!ok)
return throwError("Could not convert argument 1 to an integer");
}
int length = buf->byteLength() - offset;
if (argLen > 2) {
length = toInt32(args[2], ok);
if (!ok)
return throwError("Could not convert argument 2 to an integer");
}
if (length < 0)
return throwError("Length / offset out of range");
RefPtr<ArrayClass> array = ArrayClass::create(buf, offset, length);
if (array == NULL)
return throwError("Invalid arguments to new WebGL<T>Array(WebGLArrayBuffer, int, int)");
V8DOMWrapper::setDOMWrapper(args.Holder(), classIndex, array.get());
V8DOMWrapper::setIndexedPropertiesToExternalArray(args.Holder(),
classIndex,
array.get()->baseAddress(),
array.get()->length());
return toV8(array.release(), args.Holder());
}
int len = 0;
v8::Handle<v8::Object> srcArray;
if (argLen != 1)
return throwError("Wrong number of arguments to new WebGL<T>Array(int / array)");
if (args[0]->IsInt32()) {
len = toInt32(args[0]);
} else if (args[0]->IsObject()) {
srcArray = args[0]->ToObject();
if (srcArray.IsEmpty())
return throwError("Could not convert argument 0 to an object");
len = toInt32(srcArray->Get(v8::String::New("length")));
} else
return throwError("Could not convert argument 0 to either an int32 or an object");
RefPtr<ArrayClass> array = ArrayClass::create(len);
if (!srcArray.IsEmpty()) {
for (int i = 0; i < len; i++) {
v8::Local<v8::Value> val = srcArray->Get(v8::Integer::New(i));
array->set(i, val->NumberValue());
}
}
V8DOMWrapper::setDOMWrapper(args.Holder(), classIndex, array.get());
V8DOMWrapper::setIndexedPropertiesToExternalArray(args.Holder(),
classIndex,
array.get()->baseAddress(),
array.get()->length());
return toV8(array.release(), args.Holder());
}
template <class T, typename ElementType>
v8::Handle<v8::Value> getWebGLArrayElement(const v8::Arguments& args,
V8ClassIndex::V8WrapperType wrapperType)
{
if (args.Length() != 1) {
V8Proxy::setDOMException(SYNTAX_ERR);
return notHandledByInterceptor();
}
bool ok;
uint32_t index = toInt32(args[0], ok);
if (!ok) {
V8Proxy::setDOMException(SYNTAX_ERR);
return notHandledByInterceptor();
}
T* array = reinterpret_cast<T*>(args.Holder()->GetPointerFromInternalField(v8DOMWrapperObjectIndex));
if (index >= array->length())
return v8::Undefined();
ElementType result;
if (!array->get(index, result))
return v8::Undefined();
return v8::Number::New(result);
}
template <class T>
v8::Handle<v8::Value> setWebGLArrayFromArray(T* webGLArray, const v8::Arguments& args)
{
if (args[0]->IsObject()) {
v8::Local<v8::Object> array = args[0]->ToObject();
uint32_t offset = 0;
if (args.Length() == 2)
offset = toInt32(args[1]);
uint32_t length = toInt32(array->Get(v8::String::New("length")));
if (offset + length > webGLArray->length())
V8Proxy::setDOMException(INDEX_SIZE_ERR);
else
for (uint32_t i = 0; i < length; i++)
webGLArray->set(offset + i, array->Get(v8::Integer::New(i))->NumberValue());
}
return v8::Undefined();
}
template <class CPlusPlusArrayType, class JavaScriptWrapperArrayType>
v8::Handle<v8::Value> setWebGLArray(const v8::Arguments& args,
V8ClassIndex::V8WrapperType wrapperType)
{
if (args.Length() < 1 || args.Length() > 2) {
V8Proxy::setDOMException(SYNTAX_ERR);
return notHandledByInterceptor();
}
CPlusPlusArrayType* array = JavaScriptWrapperArrayType::toNative(args.Holder());
if (args.Length() == 2 && args[0]->IsInt32()) {
uint32_t index = toInt32(args[0]);
array->set(index, args[1]->NumberValue());
return v8::Undefined();
}
if (JavaScriptWrapperArrayType::HasInstance(args[0])) {
CPlusPlusArrayType* src = JavaScriptWrapperArrayType::toNative(args[0]->ToObject());
uint32_t offset = 0;
if (args.Length() == 2)
offset = toInt32(args[1]);
ExceptionCode ec = 0;
array->set(src, offset, ec);
V8Proxy::setDOMException(ec);
return v8::Undefined();
}
return setWebGLArrayFromArray(array, args);
}
}
#endif // ENABLE(3D_CANVAS)