mrmBot-Matrix/natives/mirror.cc
2020-07-28 09:38:55 -05:00

84 lines
No EOL
2.5 KiB
C++

#include <napi.h>
#include <list>
#include <Magick++.h>
using namespace std;
using namespace Magick;
class MirrorWorker : public Napi::AsyncWorker {
public:
MirrorWorker(Napi::Function& callback, string in_path, bool vertical, bool first, string type, int delay)
: Napi::AsyncWorker(callback), in_path(in_path), vertical(vertical), first(first), type(type), delay(delay) {}
~MirrorWorker() {}
void Execute() {
list<Image> frames;
list<Image> coalesced;
list<Image> mid;
list<Image> result;
MagickCore::GravityType gravity;
readImages(&frames, in_path);
coalesceImages(&coalesced, frames.begin(), frames.end());
if (vertical && first) {
gravity = Magick::NorthGravity;
} else if (!vertical && first) {
gravity = Magick::WestGravity;
} else if (vertical && !first) {
gravity = Magick::SouthGravity;
} else {
gravity = Magick::EastGravity;
}
for (Image &image : coalesced) {
list<Image> mirrored;
Image final;
image.extent(Geometry(to_string(vertical ? image.baseColumns() : image.baseColumns() / 2) + "x" + to_string(vertical ? image.baseRows() / 2 : image.baseRows())), gravity);
mirrored.push_back(image);
Image mirror = image;
if (vertical) {
mirror.flip();
} else {
mirror.flop();
}
if (first) {
mirrored.push_back(mirror);
} else {
mirrored.push_front(mirror);
}
appendImages(&final, mirrored.begin(), mirrored.end(), vertical);
final.magick(type);
mid.push_back(final);
}
optimizeImageLayers(&result, mid.begin(), mid.end());
if (delay != 0) for_each(result.begin(), result.end(), animationDelayImage(delay));
writeImages(result.begin(), result.end(), &blob);
}
void OnOK() {
Callback().Call({Env().Undefined(), Napi::Buffer<char>::Copy(Env(), (char *)blob.data(), blob.length())});
}
private:
string in_path, type;
int delay;
bool vertical, first;
Blob blob;
};
Napi::Value Mirror(const Napi::CallbackInfo &info)
{
Napi::Env env = info.Env();
string in_path = info[0].As<Napi::String>().Utf8Value();
bool vertical = info[1].As<Napi::Boolean>().Value();
bool first = info[2].As<Napi::Boolean>().Value();
string type = info[3].As<Napi::String>().Utf8Value();
int delay = info[4].As<Napi::Number>().Int32Value();
Napi::Function cb = info[5].As<Napi::Function>();
MirrorWorker* mirrorWorker = new MirrorWorker(cb, in_path, vertical, first, type, delay);
mirrorWorker->Queue();
return env.Undefined();
}