mrmBot-Matrix/natives/homebrew.cc

53 lines
1.8 KiB
C++
Raw Normal View History

2020-07-21 14:03:08 +00:00
#include <napi.h>
#include <vips/vips8>
2020-07-21 14:03:08 +00:00
using namespace std;
using namespace vips;
2020-07-21 14:03:08 +00:00
Napi::Value Homebrew(const Napi::CallbackInfo &info) {
2020-07-21 14:03:08 +00:00
Napi::Env env = info.Env();
2022-06-28 03:50:53 +00:00
Napi::Object result = Napi::Object::New(env);
2020-07-21 14:03:08 +00:00
try {
Napi::Object obj = info[0].As<Napi::Object>();
string caption = obj.Get("caption").As<Napi::String>().Utf8Value();
string basePath = obj.Get("basePath").As<Napi::String>().Utf8Value();
2020-07-21 14:03:08 +00:00
string assetPath = basePath + "assets/images/hbc.png";
VImage bg = VImage::new_from_file(assetPath.c_str());
VImage text = VImage::text(
".", VImage::option()->set(
"fontfile", (basePath + "assets/fonts/hbc.ttf").c_str()));
text = VImage::text(
("<span letter_spacing=\"-5120\" color=\"white\">" + caption +
"</span>")
.c_str(),
VImage::option()
->set("rgba", true)
->set("align", VIPS_ALIGN_CENTRE)
->set("font", "PF Square Sans Pro, Twemoji Color Font 96")
->set("fontfile", (basePath + "assets/fonts/twemoji.otf").c_str()));
VImage out = bg.composite2(text, VIPS_BLEND_MODE_OVER,
VImage::option()
->set("x", 400 - (text.width() / 2))
->set("y", 300 - (text.height() / 2) - 8));
void *buf;
size_t length;
out.write_to_buffer(".png", &buf, &length);
result.Set("data", Napi::Buffer<char>::Copy(env, (char *)buf, length));
result.Set("type", "png");
} catch (std::exception const &err) {
2022-06-28 03:50:53 +00:00
Napi::Error::New(env, err.what()).ThrowAsJavaScriptException();
} catch (...) {
2022-06-28 03:50:53 +00:00
Napi::Error::New(env, "Unknown error").ThrowAsJavaScriptException();
}
2022-06-28 03:50:53 +00:00
vips_error_clear();
vips_thread_shutdown();
return result;
2020-07-21 14:03:08 +00:00
}