GTK is a multi-platform toolkit for creating graphical user interfaces.
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Benjamin Otte 8bf8ac5076 Add GdkArray
This is a scary idea where you #define a bunch of preprocessor values
and then #include "gdkarrayimpl.c" and end up with a dynamic array for
that data type.

See https://en.wikipedia.org/wiki/X_Macro for what's going on.

What are the advantages over using GArray or GPtrArray?

 * It's typesafe
   Because it works like C++ templates, we can use the actual type of
   the object instead of having to use gpointer.

 * It's one less indirection
   instead of 2 indirections via self->array->data, this array is
   embedded, so self->array is the actual data, and just one indirection
   away. This is pretty irrelevant in general, but can be very noticable
   in tight loops.

 * It's all inline
   Because the whole API is defined as static inline functions, the
   compiler has full access to everything and can (and does) optimize
   out unnecessary calls, thereby speeding up some operations quite
   significantly, when full optimizations are enabled.

 * It has more features
   In particular preallocation allows for avoiding malloc() calls, which
   can again speed up tight loops a lot.
   But there's also splice(), which is very useful when used with
   listmodels.
2020-07-16 18:09:57 +02:00
.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: Make the words demo expand 2020-07-13 17:54:27 -04:00
docs expression: Add some introspection 2020-07-13 20:19:07 -04:00
examples headerbar: Show title buttons by default 2020-07-02 23:51:16 +05:00
gdk Add GdkArray 2020-07-16 18:09:57 +02:00
gsk gsk: Fix a transform leak 2020-07-08 17:44:08 -04:00
gtk inspector: Avoid losing a reference 2020-07-16 07:14:01 -04:00
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 Use depth=1 for cloning sub-projects 2020-07-09 14:07:14 +01:00
tests filechooser: Drop the ::current-folder-changed signal 2020-07-09 01:48:33 -04:00
testsuite Add GdkArray 2020-07-16 18:09:57 +02:00
.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: Increase the timeout multiplier 2020-07-10 16:08:59 +01:00
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 gtksearchengine: Add tracker3 search engine 2020-05-19 22:05:07 +02:00
meson.build Clarify document 2020-06-18 17:36:44 +01:00
NEWS NEWS: Updates and fixes 2020-07-13 17:10:22 -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.