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100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
/**
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* Created by G-Canvas Open Source Team.
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* Copyright (c) 2017, Alibaba, Inc. All rights reserved.
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*
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* This source code is licensed under the Apache Licence 2.0.
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* For the full copyright and license information, please view
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* the LICENSE file in the root directory of this source tree.
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*/
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#include "ImageData.h"
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namespace NodeBinding
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{
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Napi::FunctionReference ImageData::constructor;
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ImageData::ImageData(const Napi::CallbackInfo &info) : Napi::ObjectWrap<ImageData>(info)
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{
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mWidth = info[0].As<Napi::Number>().Int32Value();
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mHeight = info[1].As<Napi::Number>().Int32Value();
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pixels.resize(4 * mWidth * mHeight);
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}
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void ImageData::Init(Napi::Env env)
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{
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Napi::HandleScope scope(env);
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Napi::Function func =
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DefineClass(env,
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"ImageData",
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{
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InstanceAccessor("data", &ImageData::getData, nullptr),
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InstanceAccessor("width", &ImageData::getWidth, nullptr),
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InstanceAccessor("height", &ImageData::getHeight, nullptr),
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});
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constructor = Napi::Persistent(func);
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constructor.SuppressDestruct();
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}
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Napi::Object ImageData::NewInstance(Napi::Env env, const Napi::Value width, const Napi::Value height)
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{
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Napi::Object obj = constructor.New({width, height});
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obj.Set("name", Napi::String::New(env, "imageData"));
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return obj;
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}
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Napi::Value ImageData::getData(const Napi::CallbackInfo &info)
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{
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hasImageDataWrite = true;
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if (mImageDataRef.IsEmpty())
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{
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Napi::Array ret = Napi::Array::New(info.Env(), pixels.size());
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if (!pixels.empty())
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{
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for (int i = 0; i < pixels.size(); i++)
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{
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ret.Set(i, Napi::Number::New(info.Env(), pixels[i]));
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}
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}
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mImageDataRef = Napi::ObjectReference::New(ret);
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return ret;
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}
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else
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{
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return mImageDataRef.Value();
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}
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}
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Napi::Value ImageData::getWidth(const Napi::CallbackInfo &info)
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{
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return Napi::Number::New(info.Env(), mWidth);
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}
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Napi::Value ImageData::getHeight(const Napi::CallbackInfo &info)
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{
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return Napi::Number::New(info.Env(),mHeight);
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}
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int ImageData::getWidth()
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{
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return mWidth;
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}
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int ImageData::getHeight()
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{
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return mHeight;
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}
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std::vector<u_int8_t> &ImageData::getPixels()
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{
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if (!mImageDataRef.IsEmpty() && hasImageDataWrite)
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{
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Napi::Array ret = mImageDataRef.Value().As<Napi::Array>();
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for (int i = 0; i < pixels.size(); i++)
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{
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pixels[i] = ret.Get(i).As<Napi::Number>().Int32Value();
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}
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hasImageDataWrite = false;
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}
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return pixels;
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}
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} // namespace NodeBinding
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