The Ensemble Graphics Toolkit (EGT) is a free and open-source C++ GUI widget toolkit for Microchip AT91/SAMA5 microprocessors. It is used to develop graphical embedded Linux applications. EGT provides modern and complete GUI functionality, look-and-feel, and performance.

Want to help out or make some changes? See Contributing.

Complete EGT Programmers Manual with API reference is available for the latest version.

Features

• Anti-aliased 2D vector graphics.
• Modern C++11 design and simplicity.
• Optimized for Microchip microprocessors running Linux.
• DRM/KMS, X11, and fbdev backends.
• libinput, tslib, and evdev input support for mouse, keyboard, and touchscreen.
• UTF-8 encoding with internationalization and localization support.
• Support for libplanes and hardware LCD overlay planes.
• Built in and simple animation support for creating custom effects.
• A rich and extensible default widget set designed for embedded touchscreens.
• Multimedia support for video playback, raster images, and vector graphics.
• Customizable look and feel with themeable widget drawing, colors, and fonts.

Build

Install dependencies.

To build for a PC, first install recommended dependencies:

sudo apt-get install build-essential automake autoconf libtool pkg-config \
    libdrm-dev libinput-dev libcairo-dev libjpeg-dev libmagic-dev gettext

Optional dependencies include:

sudo apt-get install librsvg2-dev liblua5.3-dev libcurl4-openssl-dev \
     libxkbcommon-dev xkb-data libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev
sudo apt-get install libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev

Then clone the source and build.

git clone --recursive https://github.com/linux4sam/egt.git
cd egt
./autogen.sh
./configure
make
make install

Example

The obligatory complete EGT application that can be compiled and run. It shows creating the Application object, and then a Window and a Button on the screen.

#include <egt/ui>

int main(int argc, const char** argv)
{
    egt::Application app(argc, argv);

    egt::TopWindow window;
    egt::Button button(window, "Press Me");
    egt::center(button);
    window.show();

    return app.run();
}

To link this example application, saved as example.cpp, use pkgconfig.

g++ -std=c++11 example.cpp -o example `pkg-config libegt --cflags --libs` -pthread

Then, run.

./example

Screenshots

Dependencies

EGT depends on a variety of different libraries. Some of them are required or recommended, and others are optional for conditional features in EGT.

Recommended:

• libplanes >= 1.0.0
• libdrm >= 2.4.0
• lua >= 5.3.1
• cairo >= 1.14.6
• fontconfig
• libinput >= 1.6.3
• libjpeg
• libmagic

Optional:

• x11 >= 1.6.3
• xkbcommon
• tslib >= 1.15
• gstreamer-1.0 >= 1.8
• lua >= 5.3.0
• libcurl >= 4.5
• librsvg-2.0

License

EGT is released under the terms of the Apache 2 license. See the COPYING file for more information.