October 2016 – GTK Development Blog

This Week in GTK+ – 22

In this last week, the master branch of GTK+ has seen 132 commits, with 10020 lines added and 16435 lines removed.

Matthias Clasen worked on a better internal API for CSS gadgets to deal with the port to GSK render nodes in the wip/matthiasc/render-node-vfunc branch
Matthias is also working on dropping deprecated API like GdkColor from the text attributes in the wip/matthiasc/text-attributes branch
William Hua is working on adding support for ContentHub in the Mir backend for GDK, in his wip/attente/mir-content-hub branch
The GTK+ road map is available on the wiki.

On the master branch:

Alex Larsson removed the “offscreen” GdkWindow support in GDK, and the GtkOffscreenWindow widget in GTK+, in order to simplify the internals of GDK. Replacing offscreen windows is going to be the job of GSK from now on
Alex also changed the way GTK+ is built: from now on, there won’t be a separate GDK and GSK shared libraries; instead, GTK+ will provide a single shared library that includes GDK and GSK symbols. This allows GTK to use internal symbols without having to expose them via private function pointer tables, and reduces the intra PLT jumps to call GDK API
Chun-wei Fan improved the OpenGL support in the Windows backend of GDK; GDK will use more accurate GL configuration options, and will fall back to legacy GL contexts if core profiles contexts are not available, just like the X11 and Wayland backends
Fan also updated the Visual Studio projects files in order to build GSK; MSVC 2013 is now the minimum required version to compile the next stable version of GTK+
Benjamin Otte reworked the way invalidations are queued in GTK, and removed gdk_window_invalidate(); this allowed the inspector to show the updates caused by GTK widget invalidations during rendering
Benjamin also removed the API to query visuals from GDK, and the API to check if the windowing system is using RGBA visuals and compositing has been moved to GdkDisplay from GtkWidget

Interested in working on GTK+? Look at the list of bugs for newcomers and join the IRC channel #gtk+ on irc.gnome.org.

In this last week, the master branch of GTK+ has seen 335 commits, with 13631 lines added and 37699 lines removed.

Emmanuele merged his wip/ebassi/gsk-renderer branch into the master branch, effectively adding GSK to the API; there is an ongoing effort in improving its performance profile, as well as porting more widgets to the GskRenderNode API
Benjamin added new GdkWindow constructors for input and child windows, which will eventually replace the generic gdk_window_new() API
Timm removed more deprecated API from GTK+
Timm also replaced all the get_preferred_* family of virtual functions with a single GtkWidgetClass.measure virtual function, thus simplifying the implementation of widgets
Matthias started a new migration guide for application developers that wish to port their code from GTK+ 3.x to GTK+ 4.x
Chun-wei Fan updated the Windows backend of GDK following the deprecations and API changes
The GTK+ road map is available on the wiki.

GDK now tries to do a better job at detecting if a GL context is using OpenGL ES, a core OpenGL profile, or a legacy OpenGL profile.
New deprecations in the gtk-3-22 branch for API that has been removed from the master branch:
- gdk_window_set_debug_updates() — will be replaced by appropriate rendering in GSK
- GtkContainer:child — no replacement, as it’s just a C convenience property for use in variadic arguments functions
- gdk_window_set_background* family of functions — no replacement
- gdk_window_set_wmclass() — no replacement, as it was already marked as “do not use”
- gdk_drag_dest_set_proxy() — no replacement
- various GdkScreen API — replaced by GdkMonitor
Jaime Velasco Juan vastly improved the “native” Windows theme in the gtk-3-22 branch, to better match the Windows 7 visuals
Lapo Calamandrei has fixed the appearance of circular buttons in Adwaita

772922 – GtkMenu: Try using gdk_window_move_to_rect() more often
773029 – [gucharmap] style-set signal problem
773246 – Typo in css color definitions documentation
773180 – Don’t second-guess whether our GDK GL context is GLES
773113 – tests: fix clipboard test by loading correct icon
771694 – GtkSourceView completion popup window not shown, no grabbed seat found
771205 – Buttons with circular style class have a suddenly clipped shadow at the bottom

Interested in working on GTK+? Look at the list of bugs for newcomers and join the IRC channel #gtk+ on irc.gnome.org.

In this last week, the master branch of GTK+ has seen 191 commits, with 4159 lines added and 64248 lines removed.

Benjamin merged his wip/otte/gtk4 branch, which removed various deprecated GDK and GTK+ API, into master
Timm merged parts of his wip/baedert/box branch, which removed the deprecated themeing engine API and other old style API, into master
The GTK+ road map is available on the wiki.

Emmanuele added various compiler flags to the default build in master, in order to catch issues earlier — and, hopefully, before pushing to the remote repository — during development
Matthias added new compiler requirements for GTK+; if you wish to build GTK+, your compiler must support at least a known subset of C99

772683 – Usage of FALSE instead of gint in glarea demo
772926 – shortcutswindow: working version of set_section_name()
772775 – menu bindings needs attribute to force LTR for horizontal-buttons display-hint
771320 – [Wayland] Maps widget is displayed at wrong position inside gnome-contacts
767713 – Fullscreen in wayland is buggy

Interested in working on GTK+? Look at the list of bugs for newcomers and join the IRC channel #gtk+ on irc.gnome.org.

In this last week, the master branch of GTK+ has seen 24 commits, with 3731 lines added and 3351 lines removed.

Matthias released GTK+ 3.22.1, and created the gtk-3-22 branch for stable releases
The window on the master branch is now open for the 4.0 development
Benjamin Otte has started working on the removal of the 3.x deprecated API in his wip/otte/gtk4 branch
Timm Bäder is removing the deprecated style API in his wip/baedert/box branch
The GTK+ road map is available on the wiki.

Matthias is working on the build system to ensure that the master branch is parallel installable with the gtk-3-22 and gtk-2-24 stable branches
The old and deprecated AM_PATH_GTK_3_0 m4 macro for autotools-based build systems has been removed from the master branch; projects depending on GTK+ 3.x should already have been ported to just use pkg-config and the PKG_CHECK_MODULES macro instead.

772695 – Show the keyboard shortcuts from left to right even in RTL
772345 – placesviewrow: busy_spinner when visible offsets the rest of the widgets on the row
772415 – Avoid calling eglGetDisplay
772389 – Appending a character to a GtkEntry control in overwrite mode rings the bell

Interested in working on GTK+? Look at the list of bugs for newcomers and join the IRC channel #gtk+ on irc.gnome.org.