mrmBot-Matrix/natives/retro.cc

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#include <Magick++.h>
#include <napi.h>
#include <list>
using namespace std;
using namespace Magick;
Napi::Value Retro(const Napi::CallbackInfo &info) {
Napi::Env env = info.Env();
try {
Napi::Object obj = info[0].As<Napi::Object>();
string line1 = obj.Get("line1").As<Napi::String>().Utf8Value();
string line2 = obj.Get("line2").As<Napi::String>().Utf8Value();
string line3 = obj.Get("line3").As<Napi::String>().Utf8Value();
Blob blob;
Image image;
Image line1_text;
Image line2_text;
Image line3_text;
image.read("./assets/images/retro.png");
line2_text.backgroundColor("none");
line2_text.fontPointsize(128);
line2_text.textGravity(Magick::CenterGravity);
line2_text.font("Comic Sans MS");
line2_text.read("pango:<span foreground='white'>" +
(line2 == "" ? line1 : line2) + "</span>");
line2_text.extent(Geometry("1260x859+0+0"), Magick::CenterGravity);
Image line2_text_fill = line2_text;
line2_text_fill.channel(Magick::AlphaChannel);
line2_text_fill.morphology(Magick::EdgeOutMorphology, "Octagon:10");
line2_text_fill.backgroundColor("gray");
line2_text_fill.alphaChannel(Magick::ShapeAlphaChannel);
line2_text.composite(line2_text_fill, Magick::CenterGravity,
Magick::DstOverCompositeOp);
image.composite(line2_text, Geometry("+0-100"), Magick::OverCompositeOp);
if (line2 != "") {
line1_text.backgroundColor("none");
line1_text.fontPointsize(64);
line1_text.textGravity(Magick::CenterGravity);
line1_text.font("Comic Sans MS");
line1_text.read("pango:<span foreground='white'>" + line1 + "</span>");
line1_text.extent(Geometry("1260x859+0+0"), Magick::CenterGravity);
Image line1_text_fill = line1_text;
line1_text_fill.channel(Magick::AlphaChannel);
line1_text_fill.morphology(Magick::EdgeOutMorphology, "Octagon:10");
line1_text_fill.backgroundColor("gray");
line1_text_fill.alphaChannel(Magick::ShapeAlphaChannel);
line1_text.composite(line1_text_fill, Magick::CenterGravity,
Magick::DstOverCompositeOp);
image.composite(line1_text, Geometry("+0-250"), Magick::OverCompositeOp);
}
if (line3 != "") {
line3_text.backgroundColor("none");
line3_text.fontPointsize(64);
line3_text.textGravity(Magick::CenterGravity);
line3_text.font("Comic Sans MS");
line3_text.read("pango:<span foreground='white'>" + line3 + "</span>");
line3_text.extent(Geometry("1260x859+0+0"), Magick::CenterGravity);
Image line3_text_fill = line3_text;
line3_text_fill.channel(Magick::AlphaChannel);
line3_text_fill.morphology(Magick::EdgeOutMorphology, "Octagon:10");
line3_text_fill.backgroundColor("gray");
line3_text_fill.alphaChannel(Magick::ShapeAlphaChannel);
line3_text.composite(line3_text_fill, Magick::CenterGravity,
Magick::DstOverCompositeOp);
image.composite(line3_text, Geometry("+0+50"), Magick::OverCompositeOp);
}
image.magick("PNG");
image.write(&blob);
Napi::Object result = Napi::Object::New(env);
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)blob.data(),
blob.length()));
result.Set("type", "png");
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");
}
}