ANNOUNCE: Clutter 1.9.12 (snapshot)

Good news, everyone!

A new Clutter snapshot is now available at:

SHA256 Checksum:

09fca7a717542e0db98e554242f9e25e9b471bbecb282820156ce5f127acbd70  clutter-1.9.12.tar.xz

Additionally, a git clone of the source tree:
  git clone git://

will include a signed 1.9.12 tag which points to a commit named:

which can be verified with:
  git verify-tag 1.9.12

and can be checked out with a command such as:
  git checkout -b build 1.9.12

Clutter is a library for creating compelling, dynamic and portable graphical
user interfaces. Clutter is released under the terms of the GNU Lesser
General Public License, version 2.1 or (at your option) later.

Clutter depends on:
  GLib ≥ 2.31.10
  JSON-GLib ≥ 0.12.0
  Cogl ≥ 1.9.6
  Cairo ≥ 1.10
  Pango ≥ 1.20
  Atk ≥ 2.1.5

Clutter also has platform-specific dependencies; for more information, see
the README file included in the release.


Release Notes:
  - This is an unstable snapshot of Clutter; there are no compatibility
    guarantees for API added during a development cycle.
  - This version is API and ABI compatible with the current stable
    release of Clutter.
  - Installing the contents of this release will overwrite the files
    from the installation of the current release of Clutter.
  - Bugs should be reported on the Clutter Bugzilla product, at:

  • List of changes since Clutter 1.9.10

    - Add ClutterTimeline:repeat-count and deprecate :loop
    The :repeat-count property supercedes the :loop property, and it
    provides a way to specify the number of repeats that a timeline
    should perform - with the option of specifying an "infinity" value.

    - Add a progress mode for ClutterTimeline
    This begins the "soft deprecation" of ClutterAlpha. Instead of
    requiring a full object to compute an easing function out of a
    linear progress coming from ClutterTimeline, we should have this
    functionality on ClutterTimeline itself. Since ClutterAlpha is
    still exposed in API that we cannot deprecate (such as virtual
    functions) we cannot deprecate it fully, and we'll have to wait
    until the 2.0 API bump to get rid of it.

    - Fix ClutterBoxLayout allocation
    Since the update of the box layout algorithm there have been a
    bunch of regressions; now the layout works as intended.

    - Improve the performance of the shader-based effect in Clutter
    The effects shipped with Clutter now use the CoglSnippet API
    internally, which allows efficient generation of the shader code;
    they also ensure that the shader is generated once per class, and
    shared across instances. These changes should improve performance
    when using effects provided by Clutter.

    - Update the internal usage of Cogl API
    Clutter should strive to use the Cogl 2.0 API internally and not
    mix the 1.0 and 2.0 API.

    - Allow accessing Wayland input devices
    This is a change that allows Clutter-based toolkits to interact
    with Wayland in a meaningful way for operations like resize and

    - Add a convenience CLUTTER_BIND_ALL enumeration
    This allows binding both position and size of an actor when using
    a ClutterBindConstraint.

    - Cally updates
    Use the newly added API to reimplement focus tracking.

    - Visual Studio project updates

    - Add clutter_text_coords_to_position()
    This method roundtrips the position_to_coords() one, and allows
    retrieving the index of the character at the given actor-relative

    - Documentation updates.

    - Introspection annotation fixes.

  • List of bugs fixed since Clutter 1.9.10

    #669730 - actor: Fix and improve add_child_at_index()
    #669291 - box layout bug when callin the clutter_actor_hide() function
    #667540 - Desynchronized size between ClutterStageCogl and ClutterStageX11
    #670433 - clutter-drop-action: annotation fixes for some signals
    #670402 - CRITICAL warning when ClutterDragAction has threshold > 0

    #2515 - Setting a non-default stage fullscreen before showing it doesn't work

Many thanks to:

  Jasper St. Pierre, Neil Roberts, Robert Bragg, Alejandro Piñeiro,
  Chun-wei Fan, Rob Bradford, Мирослав Николић, Adel Gadllah,
  Alexander Shopov, Andrej Žnidaršič, Aurimas Černius, Daniel Mustieles,
  Florian Müllner, Fran Diéguez, Kasia Bondarava, Kenneth Nielsen,
  Lionel Landwerlin, Stefano Facchini.

Have fun with Clutter!


Emmanuele Bassi,
Intel Open Source Technology Center

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