mrmBot-Matrix/natives/resize.cc

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#include <napi.h>
#include <list>
#include <Magick++.h>
using namespace std;
using namespace Magick;
class ResizeWorker : public Napi::AsyncWorker {
public:
ResizeWorker(Napi::Function& callback, string in_path, bool stretch, bool wide, string type, int delay)
: Napi::AsyncWorker(callback), in_path(in_path), stretch(stretch), wide(wide), type(type), delay(delay) {}
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~ResizeWorker() {}
void Execute() {
list <Image> frames;
list <Image> coalesced;
list <Image> blurred;
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readImages(&frames, in_path);
coalesceImages(&coalesced, frames.begin(), frames.end());
for (Image &image : coalesced) {
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if (stretch) {
image.resize(Geometry("512x512!"));
} else if (wide) {
image.resize(Geometry(to_string((image.baseColumns() * 19) / 2) + "x" + to_string(image.baseRows() / 2) + "!"));
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} else {
image.scale(Geometry("10%"));
image.scale(Geometry("1000%"));
}
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image.magick(type);
blurred.push_back(image);
}
optimizeTransparency(blurred.begin(), blurred.end());
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if (type == "gif") {
for (Image &image : blurred) {
image.quantizeDitherMethod(FloydSteinbergDitherMethod);
image.quantize();
if (delay != 0) image.animationDelay(delay);
}
}
writeImages(blurred.begin(), blurred.end(), &blob);
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}
void OnOK() {
Callback().Call({Env().Undefined(), Napi::Buffer<char>::Copy(Env(), (char *)blob.data(), blob.length())});
}
private:
string in_path, type;
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int delay, amount;
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Blob blob;
bool stretch, wide;
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};
Napi::Value Resize(const Napi::CallbackInfo &info)
{
Napi::Env env = info.Env();
Napi::Object obj = info[0].As<Napi::Object>();
Napi::Function cb = info[1].As<Napi::Function>();
string path = obj.Get("path").As<Napi::String>().Utf8Value();
bool stretch = obj.Has("stretch") ? obj.Get("stretch").As<Napi::Boolean>().Value() : false;
bool wide = obj.Has("wide") ? obj.Get("wide").As<Napi::Boolean>().Value() : false;
string type = obj.Get("type").As<Napi::String>().Utf8Value();
int delay = obj.Has("delay") ? obj.Get("delay").As<Napi::Number>().Int32Value() : 0;
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ResizeWorker* explodeWorker = new ResizeWorker(cb, path, stretch, wide, type, delay);
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explodeWorker->Queue();
return env.Undefined();
}