48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
#include <napi.h>
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#include <vips/vips8>
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using namespace std;
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using namespace vips;
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Napi::Value Homebrew(const Napi::CallbackInfo &info) {
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Napi::Env env = info.Env();
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try {
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Napi::Object obj = info[0].As<Napi::Object>();
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string caption = obj.Get("caption").As<Napi::String>().Utf8Value();
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string basePath = obj.Get("basePath").As<Napi::String>().Utf8Value();
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string assetPath = basePath + "assets/images/hbc.png";
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VImage bg = VImage::new_from_file(assetPath.c_str());
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VImage text =
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VImage::text(("<span letter_spacing=\"-5120\" color=\"white\">" +
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caption + "</span>")
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.c_str(),
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VImage::option()
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->set("rgba", true)
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->set("align", VIPS_ALIGN_CENTRE)
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->set("font", "PF Square Sans Pro 96"));
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VImage out = bg.composite2(text, VIPS_BLEND_MODE_OVER,
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VImage::option()
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->set("x", 400 - (text.width() / 2))
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->set("y", 300 - (text.height() / 2) - 8));
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void *buf;
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size_t length;
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out.write_to_buffer(".png", &buf, &length);
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vips_thread_shutdown();
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Napi::Object result = Napi::Object::New(env);
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result.Set("data", Napi::Buffer<char>::Copy(env, (char *)buf, length));
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result.Set("type", "png");
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return result;
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} catch (std::exception const &err) {
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throw Napi::Error::New(env, err.what());
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} catch (...) {
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throw Napi::Error::New(env, "Unknown error");
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}
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} |