GTK is a multi-platform toolkit for creating graphical user interfaces.
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Christian Hergert 9dbf99d91a macos: prototype new GDK backend for macOS
This is fairly substantial rewrite of the GDK backend for quartz and
renamed to macOS to allow for a greenfield implementation.

Many things have come across from the quartz implementation fairly
intact such as the eventloop integration design and discovery of
event windows from the NSEvent.

However much has been changed to fit in with the new GDK design and
how removal of child GdkWindow have been completely eliminated.
Furthermore, the new GdkPopup allows for regular NSWindow to be used
to provide popovers unlike the previous implementation.

The object design more closely follows the ideal for a GDK backend.

Views have been broken out into subclasses so that we can support
multiple GSK renderer paths such as GL and Cairo (and Metal in the
future). However mixed mode GL and Cairo will not be supported. Currently
only the Cairo renderer has been implemented.

A new frame clock implementation using CVDisplayLink provides more
accurate information about when to draw drawing the next frame. Some
testing will need to be done here to understand the power implications
of this.

This implementation has also gained edge snapping for CSD windows. Some
work was also done to ensure that CSD windows have opaque regions
registered with the display server.

     ** This is still very much a work-in-progress **

Some outstanding work that needs to be done:

 - Finish a GL context for macOS and alternate NSView for GL rendering
   (possibly using speciailized CALayer for OpenGL).
 - Input rework to ensure that we don't loose remapping of keys that was
   dropped from GDK during GTK 4 development.
 - Make sure input methods continue to work.
 - Drag-n-Drop is still very much a work in progress
 - High resolution input scrolling needs various work in GDK to land
   first before we can plumb that to NSEvent.
 - gtk/ has a number of things based on GDK_WINDOWING_QUARTZ that need
   to be updated to use the macOS backend.

But this is good enough to start playing with and breaking things which
is what I'd like to see.
2020-07-21 14:45:12 -07:00
.gitlab/issue_templates issue templates: reproducers should be written in C 2019-05-18 13:47:59 +02:00
.gitlab-ci Merge branch 'ebassi/ci-timeout' into 'master' 2020-07-10 17:01:56 +00:00
build-aux Adwaita: sidebar color for file picker 2020-07-13 17:03:55 +02:00
demos gtk-demo: Don't use GtkColorSwatch 2020-07-17 20:44:06 -04:00
docs Merge branch 'list-model-docs' into 'master' 2020-07-19 23:50:09 +00:00
examples headerbar: Show title buttons by default 2020-07-02 23:51:16 +05:00
gdk macos: prototype new GDK backend for macOS 2020-07-21 14:45:12 -07:00
gsk macos: prototype new GDK backend for macOS 2020-07-21 14:45:12 -07:00
gtk build: fix linking support on macOS with Clang 2020-07-21 14:45:12 -07:00
modules cups: Plug a memory leak 2020-07-09 00:32:17 -04:00
po Update Greek translation 2020-07-15 18:12:26 +00:00
po-properties Update Romanian translation 2020-07-14 14:52:19 +00:00
subprojects build: add ATK fallback subproject wrapper 2020-07-21 14:45:12 -07:00
tests testwidgettransforms: Fix GtkBox casts 2020-07-17 07:14:50 +02:00
testsuite build: fix linking support on macOS with Clang 2020-07-21 14:45:12 -07:00
.clang-format ci: Add a style check pass 2020-02-11 14:47:22 +00:00
.gitignore .gitignore: Ignore all subdirs in the subprojects dir 2018-10-12 14:23:53 +05:30
.gitlab-ci.yml ci: Switch ASAN tests to runners tagged so 2020-07-20 16:41:46 +02:00
AUTHORS small update 2006-03-24 03:09:08 +00:00
config.h.meson x11: Add back support for the damage extension 2020-06-05 10:01:13 -04:00
CONTRIBUTING.md Update CONTRIBUTING.md 2020-05-06 15:08:36 -04:00
COPYING Change FSF Address 2012-02-27 17:06:11 +00:00
gtk4-unix-print.pc.in Adjust some more pkg-config references for gtk+ to gtk rename 2019-02-06 09:56:08 +01:00
gtk4.pc.in gtk4.pc: Move third-party libraries from Libs to Libs.private 2019-07-18 09:24:41 +01:00
gtk.doap Rename project files 2019-02-06 10:42:50 +01:00
gtk.supp Add g_intern_static_string to valgrind suppressions 2020-06-28 13:42:02 -04:00
lsan.supp Ignore more leaks in asan 2020-07-09 16:18:07 -04:00
make-pot make-pot: Make it executable 2017-08-15 16:30:14 +02:00
meson_options.txt macos: prototype new GDK backend for macOS 2020-07-21 14:45:12 -07:00
meson.build macos: prototype new GDK backend for macOS 2020-07-21 14:45:12 -07:00
NEWS NEWS: Updates 2020-07-18 18:28:51 -04:00
NEWS.pre-1.0 Split NEWS 2018-01-10 19:06:45 -05:00
NEWS.pre-2.0 Split NEWS 2018-01-10 19:06:45 -05:00
NEWS.pre-3.0 Split NEWS 2018-01-10 19:06:45 -05:00
README.md docs: Link the license file from the README 2020-04-29 12:49:35 +01:00

GTK — The GTK toolkit

Build Status

General information

GTK is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK is suitable for projects ranging from small one-off projects to complete application suites.

GTK is free software and part of the GNU Project. However, the licensing terms for GTK, the GNU LGPL, allow it to be used by all developers, including those developing proprietary software, without any license fees or royalties.

The official download location

The official web site

The official developers blog

Discussion forum

Nightly documentation can be found at

Building and installing

In order to build GTK you will need:

You will also need various dependencies, based on the platform you are building for:

If you are building the X11 backend, you will also need:

  • Xlib, and the following X extensions:
    • xrandr
    • xrender
    • xi
    • xext
    • xfixes
    • xcursor
    • xdamage
    • xcomposite
  • atk-bridge-2.0

If you are building the Wayland backend, you will also need:

  • Wayland-client
  • Wayland-protocols
  • Wayland-cursor
  • Wayland-EGL

Once you have all the necessary dependencies, you can build GTK by using Meson:

$ meson _build .
$ cd _build
$ ninja

You can run the test suite using:

$ meson test

And, finally, you can install GTK using:

$ sudo ninja install

Complete information about installing GTK+ and related libraries can be found in the file:

docs/reference/gtk/html/gtk-building.html

Or online

How to report bugs

Bugs should be reported on the issues page.

In the bug report please include:

  • Information about your system. For instance:

    • which version of GTK you are using
    • what operating system and version
    • for Linux, which distribution
    • if you built GTK, the list of options used to configure the build

    And anything else you think is relevant.

  • How to reproduce the bug.

    If you can reproduce it with one of the demo applications that are built in the demos/ subdirectory, on one of the test programs that are built in the tests/ subdirectory, that will be most convenient. Otherwise, please include a short test program that exhibits the behavior. As a last resort, you can also provide a pointer to a larger piece of software that can be downloaded.

  • If the bug was a crash, the exact text that was printed out when the crash occurred.

  • Further information such as stack traces may be useful, but is not necessary.

Contributing to GTK

Please, follow the contribution guide to know how to start contributing to GTK.

Release notes

The release notes for GTK are part of the migration guide in the API reference. See:

Licensing terms

GTK is released under the terms of the GNU Lesser General Public License, version 2.1 or, at your option, any later version, as published by the Free Software Foundation.

Please, see the COPYING file for further information.