GTK is a multi-platform toolkit for creating graphical user interfaces.
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Federico Mena Quintero e5f9bf2e9b (#1471): base64-encode included SVGs to avoid mis-escaped characters
We wrap SVG data from icons within another SVG with extra styling
information.  The wrapped SVG may contain characters that cannot be
part of a data: URL (https://fetch.spec.whatwg.org/#data-urls).

Librsvg 2.45 got more strict in its parsing of data: URLs; whereas
previously it ignored '#' characters in them, now it considers them to
be the start of a fragment identifier, which is not allowed in data:
URLs anyway.

To avoid unallowed characters, we now create a data: URL with a
base-64 encoded SVG.

Fixes https://gitlab.gnome.org/GNOME/gtk/issues/1471
2018-11-27 13:57:21 -06:00
.gitlab/issue_templates Add an issue template for crashers 2018-04-17 09:39:31 +01:00
.gitlab-ci ci/docker: add lcov so we can create coverage reports 2018-09-18 09:55:50 +02:00
build-aux demos: Make desktop file names match the application id 2018-08-02 12:15:43 +02:00
demos widget: Don't pass a position to ->size_allocate 2018-11-13 16:28:54 +01:00
docs docs: Add GtkEventControllerLegacy 2018-11-13 15:40:42 +01:00
examples examples: Use appliction id as desktop file base name 2018-08-02 11:10:21 +02:00
gdk Merge branch 'akitouni/gdkvulkan-doc-typo' into 'master' 2018-11-19 07:41:36 +00:00
gsk gl renderer: Use stack to keep track of modelview matrix 2018-11-27 05:39:27 +01:00
gtk (#1471): base64-encode included SVGs to avoid mis-escaped characters 2018-11-27 13:57:21 -06:00
modules gtkmediafile: Don't leak all the images 2018-07-04 15:05:02 +02:00
po Update POTFILES.in 2018-10-31 18:46:48 +01:00
po-properties Update POTFILES.in 2018-10-31 18:46:48 +01:00
subprojects meson: Update pango and gdk-pixbuf wrap locations 2018-07-23 20:17:04 +05:30
tests widget: Don't pass a position to ->size_allocate 2018-11-13 16:28:54 +01:00
testsuite testsuite: Fix gestures tests for the legacy controller 2018-10-15 17:39:04 +02:00
.gitignore .gitignore: Ignore all subdirs in the subprojects dir 2018-10-12 14:23:53 +05:30
.gitlab-ci.yml ci: Update the image for the Flatpak jobs 2018-07-04 18:32:59 +01:00
AUTHORS small update 2006-03-24 03:09:08 +00:00
config.h.meson Add aligned allocator support to meson 2018-06-09 13:52:42 +00:00
CONTRIBUTING.md docs: README.commits converted to markdown 2018-08-26 23:48:51 +00:00
COPYING Change FSF Address 2012-02-27 17:06:11 +00:00
gtk.doap Rename the project's DOAP file 2018-02-08 14:11:42 +00:00
gtk+-4.0.pc.in gtk+-4.0.pc: Make sure to add requirements for Gsk (e.g. graphene-1.0) 2016-10-27 08:21:13 +02:00
gtk+-unix-print-4.0.pc.in Rename pc files from 3.0 to 4.0 2016-10-07 10:34:50 -04:00
make-pot make-pot: Make it executable 2017-08-15 16:30:14 +02:00
meson_options.txt build: Make the default setting work on non-Linux Unix-like systems 2018-04-22 21:57:10 +08:00
meson.build meson: Always fetch pangoft2_dep from the pango subproject 2018-10-12 13:08:48 +05:30
NEWS Some updates 2018-06-25 19:06:34 -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.commits.md docs: README.commits converted to markdown 2018-08-26 23:48:51 +00:00
README.md README: Fix Gdk doc website link 2018-08-05 21:59:27 +00:00

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

Information about mailing lists can be found at

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.

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.