mrmBot-Matrix/natives/motivate.cc
2021-02-25 15:09:53 -06:00

100 lines
No EOL
3.3 KiB
C++

#include <napi.h>
#include <list>
#include <Magick++.h>
using namespace std;
using namespace Magick;
class MotivateWorker : public Napi::AsyncWorker {
public:
MotivateWorker(Napi::Function& callback, string in_path, string top_text, string bottom_text, string type, int delay)
: Napi::AsyncWorker(callback), in_path(in_path), top_text(top_text), bottom_text(bottom_text), type(type), delay(delay) {}
~MotivateWorker() {}
void Execute() {
list <Image> frames;
list <Image> coalesced;
list <Image> mid;
Image top;
Image bottom;
readImages(&frames, in_path);
coalesceImages(&coalesced, frames.begin(), frames.end());
top.size(Geometry("600"));
top.backgroundColor("black");
top.font("Times");
top.textGravity(Magick::CenterGravity);
top.fontPointsize(56);
top.read("pango:<span foreground='white'>" + top_text + "</span>");
top.extent(Geometry(bottom_text != "" ? to_string(top.columns()) + "x" + to_string(top.rows()) : to_string(top.columns()) + "x" + to_string(top.rows() + 20)), "black", Magick::NorthGravity);
if (bottom_text != "") {
bottom.size(Geometry("600"));
bottom.backgroundColor("black");
bottom.font("Times");
bottom.textGravity(Magick::CenterGravity);
bottom.fontPointsize(28);
bottom.read("pango:<span foreground='white'>" + bottom_text + "</span>");
bottom.extent(Geometry(to_string(bottom.columns()) + "x" + to_string(bottom.rows() + 20)), "black", Magick::NorthGravity);
}
for (Image &image : coalesced) {
Image final;
image.scale(Geometry(500, 500));
image.borderColor("black");
image.border(Geometry(5, 5));
image.borderColor("white");
image.border(Geometry(3, 3));
image.backgroundColor("black");
image.extent(Geometry(600, image.rows() + 50), Magick::CenterGravity);
list <Image> to_append;
to_append.push_back(image);
to_append.push_back(top);
if (bottom_text != "") to_append.push_back(bottom);
appendImages(&final, to_append.begin(), to_append.end(), true);
final.repage();
final.magick(type);
final.animationDelay(delay == 0 ? image.animationDelay() : delay);
mid.push_back(final);
}
optimizeTransparency(mid.begin(), mid.end());
if (type == "gif") {
for (Image &image : mid) {
image.quantizeDither(false);
image.quantize();
if (delay != 0) image.animationDelay(delay);
}
}
writeImages(mid.begin(), mid.end(), &blob);
}
void OnOK() {
Callback().Call({Env().Undefined(), Napi::Buffer<char>::Copy(Env(), (char *)blob.data(), blob.length())});
}
private:
string in_path, type, top_text, bottom_text;
int delay;
Blob blob;
};
Napi::Value Motivate(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();
string top = obj.Get("top").As<Napi::String>().Utf8Value();
string bottom = obj.Get("bottom").As<Napi::String>().Utf8Value();
string type = obj.Get("type").As<Napi::String>().Utf8Value();
int delay = obj.Has("delay") ? obj.Get("delay").As<Napi::Number>().Int32Value() : 0;
MotivateWorker* blurWorker = new MotivateWorker(cb, path, top, bottom, type, delay);
blurWorker->Queue();
return env.Undefined();
}