libemoji

🎉 Ultimate Emoji Generator library using Skia

System requirements

• CMake
• Python 3
• C11 Compiler
• C++20 Compiler

Officially supported platforms

We officially support building and running on these platforms below, but you can try it on other platforms.

• macOS 26 Tahoe (arm64)
• Ubuntu 24.04 (x86_64)

macOS

When you build this on macOS, please run the commands below before building.

$ brew install cmake

Ubuntu 24.04

When you build this, please run the commands below before building. And, they probably work as well on other Debian versions.

$ sudo apt-get update
$ sudo apt-get install git cmake g++ python3 libfontconfig1-dev \
    libx11-dev libxcomposite-dev libgl1-mesa-dev libglu1-mesa-dev freeglut3-dev -y

How to build

$ git submodule update --init
$ cmake .
$ cmake --build .

Example

#include <stdio.h>
#include <string.h>

#include "emoji.h"

int main(void) {
    EgGenerateParams params;
    memset(&params, 0, sizeof(params));
    params.fText = "絵文\n字。";
    params.fWidth = 256;
    params.fHeight = 256;
    params.fColor = 0xFF000000; // ARGB
    params.fBackgroundColor = 0xFFFFFFFF; // ARGB

    EgGenerateResult result;
    if (emoji_generate(&params, &result) != EG_OK) {
        emoji_free(&result);
        return -1;
    }

    FILE *fp = fopen("./emoji.png", "w");
    fwrite(result.fData, result.fSize, 1, fp);
    fclose(fp);

    emoji_free(&result);
    return 0;
}

See also example directory.

Development

Run formatter

$ clang-format --version
clang-format version 21.1.8

$ clang-format -i -style=file src/*.cpp src/*.h

See also

• Google 開発の 2D グラフィックライブラリ Skia の紹介とはじめかた (Japanese)
• emojilib  Python wrapper for libemoji

License

MIT © Emoji Generator