b91fc17a19
GtkGesture is a GtkEventController. gtk_event_controller_dispose() calls _gtk_widget_remove_controller(). That NULLs the pointer-to-Controller in our EventControllerData but does not delete said ECData from our GList. Subsequently, if that same Widget gets unparent()ed, that method calls unset_state_flags(), which leads to doing reset_controllers() if we are insensitive. Now, unlike most most other loops over the GList of ECData, reset_controllers() does not skip nodes whose pointer-to-Controller is NULL. So, we call gtk_event_controller_reset(NULL) and get a CRITICAL. This surfaced in a gtkmm program. The Gesture is destroyed before the Widget. The Widget then gets dispose()d, which calls unparent()… boom. I didn’t find an MCVE yet but would hope this logic is correct anyway: The simplest fix is to make the loop in gtk_widget_reset_controllers() skip GList nodes with a NULL Controller pointer, like most other such loops, so we avoid passing the NULL to gtk_event_controller_reset(). In other, live cases, _gtk_widget_run_controllers() loops over the GList and removes/frees nodes having NULL Controllers, so that should suffice. But this clearly was not getting a chance to happen in the failing case. https://bugzilla.gnome.org/show_bug.cgi?id=792624 |
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|---|---|---|
| build-aux/meson | ||
| demos | ||
| docs | ||
| examples | ||
| gdk | ||
| gsk | ||
| gtk | ||
| modules | ||
| po | ||
| po-properties | ||
| subprojects | ||
| tests | ||
| testsuite | ||
| AUTHORS | ||
| config.h.meson | ||
| CONTRIBUTING.md | ||
| COPYING | ||
| gtk+-4.0.pc.in | ||
| gtk+-unix-print-4.0.pc.in | ||
| gtk+.doap | ||
| make-pot | ||
| meson_options.txt | ||
| meson.build | ||
| NEWS | ||
| NEWS.pre-1.0 | ||
| NEWS.pre-2.0 | ||
| NEWS.pre-3.0 | ||
| README.commits | ||
| README.md | ||
GTK+ — The GTK toolkit
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
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 (optional)
- xcursor (optional)
- xdamage (optional)
- xcomposite (optional)
- 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 to the GNOME bug tracking system. You will need an account for yourself.
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 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
Patches should also be submitted to the bug tracking system. If the patch fixes an existing bug, add the patch as an attachment to that bug report; otherwise, enter a new bug report that describes the patch, and attach the patch to that bug report.
Patches should be in Git-formatted form. You should use git format-patch
to generate them. We recommend using git-bz.
For more information on the recommended workflow, please read this wiki page.
Please, follow the CODING_STYLE document in order to conform to GTK+'s
coding style when submitting a code contribution.
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.