Month: December 2016

This week in GTK+ – 29

In this last week, the master branch of GTK+ has seen 20 commits, with 883 lines added and 2740 lines removed.

Planning and status
  • Alex Larsson worked on a simplification of GdkWindow that removed native and foreign child windows; the long term plan is to have native windowing system surfaces only for top levels
  • Alex also sent a review on gtk-devel-list of Benjamin’s wip/otte/rendernode branch, with ideas on future work for the GSK rendering API
  • Chun-wei Fan updated the Windows backend to ensure that it continues to build and work on the master branch
  • Benjamin Otte implemented the snapshot() virtual function in more GtkWidget subclasses.
  • The GTK+ road map is available on the wiki.
Notable changes

On the master branch:

  • Olivier Fourdan updated the Wayland backend to ensure that empty input shapes are updated on sub-surfaces when needed; this allows other toolkits, like Clutter, to use the GDK sub-surface API
  • Alex Larsson removed gdk_window_reparent() from the GDK API, since it’s unused and allows for the goal of only having top level GDK windows
  • Benjamin Otte removed the ad hoc code from GdkCellView to modify its background, as the cell view can use CSS to achieve the same (or better) results
  • Benjamin also removed the border node from the GtkFrame CSS nodes, as it performed additional immediate mode clipping that complicates the rendering

On the gtk-3-22 stable branch:

  • Emmanuele pushed fixes for the GL rendering when using GtkGLArea with OpenGL ES 2.0 implementations that are missing the GL_EXT_framebuffer_blit extension
Bugs fixed
  • 776132 – Mention the difference between gdk_window_create_similar_image_surface and cairo_surface_create_similar_image
  • 774534 – [wayland] input shape and opaque region not applied without begin_paint()/end_paint()
Getting involved

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

This week in GTK+ – 28

In this last week, the master branch of GTK+ has seen 103 commits, with 5986 lines added and 1896 lines removed.

Planning and status
  • Benjamin Otte is working on a refactoring of the GSK render node API
  • Emmanuele Bassi worked on a 3.x-specific branch that allows GDK to use EGL instead of GLX on X11 platforms
  • The GTK+ road map is available on the wiki.
Notable changes

On the master branch:

  • Benjamin merged the Vulkan renderer for GSK, as comparison point for the GL and Cairo renderers. The Vulkan renderer adds a new optional dependency on a working Vulkan implementation, as well as glslc
  • The Vulkan renderer also resulted in a large refactoring of the GL drawing code inside GDK, though this should not have caused any user-visible changes in the API
  • Benjamin also implemented support for the CSS border-spacing property following the CSS 2.1 specification

On the gtk-3-22 stable branch:

  • Matthias released GTK+ 3.22.5.
Bugs fixed
  • 775651 – GdkX11-4.0.gir, GdkWin32-4.0.gir, and Gsk-4.0.gir are generated before Gdk-4.0.gir is ready
Getting involved

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

This week in GTK+ – 27

In this last week, the master branch of GTK+ has seen 65 commits, with 1780 lines added and 2429 lines removed.

Planning and status
  • A GTK+ hackfest is planned for March 2017; the main topic is going to be improving performance, especially with regards with rendering
  • Benjamin Otte is reworking the GL renderer for GSK to ensure it’s well integrated into the GDK rendering
  • Additionally, Benjamin is also working on an experimental Vulkan-based renderer for GSK
  • Timm Bäder is changing the GtkWidget and GtkContainer API to converge the two classes into a single scene graph
  • The GTK+ road map is available on the wiki.
Notable changes

On the master branch:

  • Matthias Clasen changed GTK to exit cleanly when it loses the display connection under X11 and Wayland; this change has also been backported to the stable gtk-3-22 branch
  • Timm Bäder cleaned up various widgets to consistently use gtk_widget_measure() when measuring the size of their children
  • Daniel Boles fixed a bug in GtkComboBox that caused a warning in Debian-based distribution that applied a downstream patch; see bug 771242 for more information; this change has also been backported to the stable gtk-3-22 branch

On the gtk-3-22 stable branch:

  • Lapo Calamandrei backported the GtkProgressbar theme fixes for correctly identifying empty and full states
Bugs fixed
  • 774915 – [Wayland]: Destroying the parent of a subsurface causes _gdk_window_destroy_hierarchy: assertion failed
  • 771242 – 3.21: opening menu for certain types of GtkComboBox causes Gdk-CRITICAL assertion ‘GDK_IS_WINDOW (window)’ failed
  • 775410 – gsk/Makefile.am runs g-ir-scanner before libgsk-4.la is linked
  • 775319 – [Wayland]: gdk_window_get_toplevel() fails to return the toplevel of a child subsurface
  • 775316 – gtk_drag_source_set_icon_pixbuf references the pixbuf received once too much
  • 775212 – GtkScaleButton does not unref all GtkAdjustment it references
  • 775525 – gtk_flow_box_get_child_at_index shouldn’t crash with an invalid index
Getting involved

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