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101 lines
3.3 KiB
C++
101 lines
3.3 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 "CanvasGradient.h"
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#include "CanvasRenderingContext2D.h"
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#include "NodeBindingUtil.h"
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#include <algorithm>
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namespace NodeBinding
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{
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Napi::FunctionReference Gradient::constructor;
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Gradient::Gradient(const Napi::CallbackInfo &info) : Napi::ObjectWrap<Gradient>(info)
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{
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if (info.Length() == 4)
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{
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mLinearGradientInfo = std::make_shared<LinearGradientInfo>();
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mLinearGradientInfo->startX = info[0].As<Napi::Number>().FloatValue();
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mLinearGradientInfo->startY = info[1].As<Napi::Number>().FloatValue();
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mLinearGradientInfo->endX = info[2].As<Napi::Number>().FloatValue();
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mLinearGradientInfo->endY = info[3].As<Napi::Number>().FloatValue();
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}
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else if (info.Length() == 6)
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{
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mRadialGradientInfo = std::make_shared<RadialGradientInfo>();
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mRadialGradientInfo->startX = info[0].As<Napi::Number>().FloatValue();
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mRadialGradientInfo->startY = info[1].As<Napi::Number>().FloatValue();
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mRadialGradientInfo->startR = info[2].As<Napi::Number>().FloatValue();
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mRadialGradientInfo->endX = info[3].As<Napi::Number>().FloatValue();
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mRadialGradientInfo->endY = info[4].As<Napi::Number>().FloatValue();
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mRadialGradientInfo->endR = info[5].As<Napi::Number>().FloatValue();
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}
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else
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{
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throwError(info, "wrong argment number");
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}
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}
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void Gradient::Init(Napi::Env env)
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{
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Napi::HandleScope scope(env);
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Napi::Function func = DefineClass(env, "CanvasGradient", {
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InstanceMethod("addColorStop", &Gradient::addColorStop),
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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 Gradient::NewInstance(Napi::Env env, const Napi::CallbackInfo &info)
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{
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if (info.Length() == 4)
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{
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Napi::Object obj = constructor.New({info[0], info[1], info[2], info[3]});
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obj.Set("name", Napi::String::New(env, "linearGradient"));
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return obj;
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}
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else if (info.Length() == 6)
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{
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Napi::Object obj = constructor.New({info[0], info[1], info[2], info[3], info[4], info[5]});
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obj.Set("name", Napi::String::New(env, "radialGradient"));
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return obj;
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}
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else
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{
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throwError(info, "wrong argument number");
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return Napi::Object::New(env);
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}
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}
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void Gradient::addColorStop(const Napi::CallbackInfo &info)
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{
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NodeBinding::checkArgs(info, 2);
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float offset = 0.0;
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if (info[0].IsNumber())
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{
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offset = info[0].As<Napi::Number>().FloatValue();
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}
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else if (info[0].IsString())
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{
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std::string tmp = info[0].As<Napi::String>().Utf8Value();
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offset = std::stof(tmp);
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}
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else
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{
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throwError(info, "the arg type is invaild");
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}
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std::string color = info[1].As<Napi::String>().Utf8Value();
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mColorStopSet.push_back(ColorStop(offset,std::move(color)));
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std::sort(mColorStopSet.begin(),mColorStopSet.end(),less_than_key());
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return;
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}
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const std::vector<ColorStop>& Gradient::getColorStops()
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{
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return mColorStopSet;
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}
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} // namespace NodeBinding
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