mrmBot-Matrix/natives/motivate.cc

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#include <Magick++.h>
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#include <napi.h>
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#include <list>
using namespace std;
using namespace Magick;
Napi::Value Motivate(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
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try {
Napi::Object obj = info[0].As<Napi::Object>();
string path = obj.Get("path").As<Napi::String>().Utf8Value();
string top_text = obj.Get("top").As<Napi::String>().Utf8Value();
string bottom_text = 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;
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Blob blob;
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list<Image> frames;
list<Image> coalesced;
list<Image> mid;
Image top;
Image bottom;
readImages(&frames, path);
coalesceImages(&coalesced, frames.begin(), frames.end());
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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);
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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);
}
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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);
}
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optimizeTransparency(mid.begin(), mid.end());
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if (type == "gif") {
for (Image &image : mid) {
image.quantizeDither(false);
image.quantize();
}
}
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writeImages(mid.begin(), mid.end(), &blob);
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Napi::Object result = Napi::Object::New(env);
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)blob.data(),
blob.length()));
result.Set("type", type);
return result;
} catch (Napi::Error const &err) {
throw err;
} catch (std::exception const &err) {
throw Napi::Error::New(env, err.what());
} catch (...) {
throw Napi::Error::New(env, "Unknown error");
}
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}