94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
#include <napi.h>
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#include <list>
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#include <iostream>
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#include <Magick++.h>
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using namespace std;
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using namespace Magick;
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class WatermarkWorker : public Napi::AsyncWorker {
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public:
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WatermarkWorker(Napi::Function& callback, string in_path, string water_path, int gravity, string type, int delay, bool resize, bool append, bool mc)
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: Napi::AsyncWorker(callback), in_path(in_path), water_path(water_path), gravity(gravity), type(type), delay(delay), resize(resize), append(append), mc(mc) {}
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~WatermarkWorker() {}
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void Execute() {
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list <Image> frames;
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list <Image> coalesced;
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list <Image> mid;
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Image watermark;
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readImages(&frames, in_path);
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watermark.read(water_path);
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if (resize && append) {
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string query(to_string(frames.front().baseColumns()) + "x");
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watermark.scale(Geometry(query));
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} else if (resize) {
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string query("x" + to_string(frames.front().baseRows()));
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watermark.scale(Geometry(query));
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}
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coalesceImages(&coalesced, frames.begin(), frames.end());
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for (Image &image : coalesced) {
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Image final;
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if (append) {
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list <Image> to_append;
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to_append.push_back(image);
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to_append.push_back(watermark);
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appendImages(&final, to_append.begin(), to_append.end(), true);
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final.repage();
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} else if (mc) {
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image.backgroundColor("white");
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image.extent(Geometry(image.columns(), image.rows() + 15));
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image.composite(watermark, Magick::GravityType(gravity), Magick::OverCompositeOp);
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final = image;
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} else {
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image.composite(watermark, Magick::GravityType(gravity), Magick::OverCompositeOp);
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final = image;
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}
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image.magick(type);
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final.animationDelay(delay == 0 ? image.animationDelay() : delay);
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mid.push_back(final);
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}
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optimizeTransparency(mid.begin(), mid.end());
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if (type == "gif") {
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for (Image &image : mid) {
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image.quantizeDitherMethod(FloydSteinbergDitherMethod);
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image.quantize();
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}
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}
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writeImages(mid.begin(), mid.end(), &blob);
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}
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void OnOK() {
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Callback().Call({Env().Undefined(), Napi::Buffer<char>::Copy(Env(), (char *)blob.data(), blob.length())});
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}
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private:
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string in_path, water_path, type;
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int delay, gravity;
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Blob blob;
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bool resize, append, mc;
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};
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Napi::Value Watermark(const Napi::CallbackInfo &info)
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{
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Napi::Env env = info.Env();
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Napi::Object obj = info[0].As<Napi::Object>();
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Napi::Function cb = info[1].As<Napi::Function>();
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string path = obj.Get("path").As<Napi::String>().Utf8Value();
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string water = obj.Get("water").As<Napi::String>().Utf8Value();
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int gravity = obj.Get("gravity").As<Napi::Number>().Int32Value();
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bool resize = obj.Has("resize") ? obj.Get("resize").As<Napi::Boolean>().Value() : false;
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bool append = obj.Has("append") ? obj.Get("append").As<Napi::Boolean>().Value() : false;
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bool mc = obj.Has("mc") ? obj.Get("mc").As<Napi::Boolean>().Value() : false;
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string type = obj.Get("type").As<Napi::String>().Utf8Value();
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int delay = obj.Has("delay") ? obj.Get("delay").As<Napi::Number>().Int32Value() : 0;
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WatermarkWorker* watermarkWorker = new WatermarkWorker(cb, path, water, gravity, type, delay, resize, append, mc);
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watermarkWorker->Queue();
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return env.Undefined();
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} |