| /* |
| * Copyright (C) 2009 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #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 function used by the WebGLArray*Constructor callbacks. |
| 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) { |
| // This happens when we return a previously constructed |
| // WebGLArray, e.g. from the call to WebGL<T>Array.slice(). |
| // The V8DOMWrapper will set the internal pointer in the |
| // created object. Unfortunately it doesn't look like it's |
| // possible to distinguish between this case and that where |
| // the user calls "new WebGL<T>Array()" from JavaScript. |
| return args.Holder(); |
| } |
| |
| // Supported constructors: |
| // WebGL<T>Array(n) where n is an integer: |
| // -- create an empty array of n elements |
| // WebGL<T>Array(arr) where arr is an array: |
| // -- create a WebGL<T>Array containing the contents of "arr" |
| // WebGL<T>Array(buf, offset, length) |
| // -- create a WebGL<T>Array pointing to the WebGLArrayBuffer |
| // "buf", starting at the specified offset, for the given |
| // length |
| |
| // See whether the first argument is a WebGLArrayBuffer. |
| 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)"); |
| // Transform the holder into a wrapper object for the array. |
| 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()) { |
| // Need to copy the incoming array into the newly created WebGLArray. |
| for (int i = 0; i < len; i++) { |
| v8::Local<v8::Value> val = srcArray->Get(v8::Integer::New(i)); |
| array->set(i, val->NumberValue()); |
| } |
| } |
| |
| // Transform the holder into a wrapper object for the array. |
| 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()) { |
| // void set(in sequence<long> array, [Optional] in unsigned long offset); |
| 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()) { |
| // void set(in unsigned long index, in {long|float} value); |
| uint32_t index = toInt32(args[0]); |
| array->set(index, args[1]->NumberValue()); |
| return v8::Undefined(); |
| } |
| |
| if (JavaScriptWrapperArrayType::HasInstance(args[0])) { |
| // void set(in WebGL<T>Array array, [Optional] in unsigned long offset); |
| 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) |
