click_count generation code.
* tests/test-events.c: (input_cb): extended test to report click_count
for release and scroll events as well as press events.
* clutter/clutter-actor.c::
* clutter/clutter-behaviour-opacity.c:
* clutter/clutter-clone-texture.c:
* clutter/clutter-effect.c:
* clutter/clutter-label.c: Remove the usage of G_PARAM_CONSTRUCT
without an override for the ::construct virtual function; using
G_PARAM_CONSTRUCT to set the default value of a property is not
the recommended approach; default values are set inside the
instance init function.
* clutter/clutter-label.[ch]: Fix ClutterLabel size allocation when
no bounding box has been provided, and store the box set by the
user so that it can be reused when recomputing the layout. (#600)
(clutter_label_class_init),
(clutter_label_init): Set the :wrap property default to FALSE.
* clutter/clutter-units.h: Add ClutterUnit-to-PangoUnit conversion
macro.
* tests/test-rotate.c: Fix string.
* clutter.symbols: Update
* clutter/clutter-actor.h: Rename the angle argument for
set_rotationx() to avoid gtk-doc complaining
* clutter/clutter-main.h:
* clutter/clutter-main.c:
(clutter_set_motion_events_enabled): Rename for consistency
(clutter_get_motion_events_frequency),
(clutter_set_motion_events_frequency): Add accessors for the default
motion events deliver frequency.
(clutter_do_event): Throttle down motion events delivery using the
motion events frequency setting, to avoid excessive redraws. (#608)
(clutter_context_get_default): Enable per-actor motion events, at
least for now.
* tests/test-events.c (red_button_cb):
* tests/test-grab.c (green_press_cb): Update.
(clutter_actor_set_rotation): swapped axis and angle around,
the new argument order is: (axis, angle, x, y, z). Also removed
deprecated rotation functions from header.
Updated use of clutter_actor_set_rotation? in the following files:
* clutter/clutter-behaviour-rotate.c:
* clutter/clutter-effect.c:
* tests/test-actors.c:
* tests/test-project.c:
* clutter/clutter-actor.c:
* clutter/clutter-actor.h:
* clutter/clutter-group.c:
* clutter/clutter-main.c:
* clutter/clutter-stage.c:
* tests/test-events.c:
Parent Actors no longer need to be set reactive for reactive
children to get events. Also makes groups now pickable.
(#597, #423)
* clutter/clutter-texture.c:
Handle case when 1x1 tiled texture is created,
falling 'back' to being non tiled. (#596)
* clutter/eglx/clutter-backend-egl.c:
Call EglTerminate on backend shutdown.
* clutter.symbols: Update exported symbols.
* clutter/clutter-actor.[ch]: Remove clutter_actor_rotate_*
and clutter_actor_get_rx* and provide a simpler rotation API:
clutter_actor_set_rotation() and clutter_actor_get_rotation().
* clutter/clutter-deprecated.h: Deprecate the old rotation API.
* clutter/clutter-behaviour-bspline.c:
* clutter/clutter-behaviour-rotate.c:
* clutter/clutter-effect.c: Update internal usage of the
rotation API.
* tests/test-project.c: Ditto as above.
(emit_pointer_event): utility function to emit pointer event signals
(which takes pointer grab into account).
(emit_keyboard_event): utility function to emit keyboard event signals
(which takes keyboard grab into account).
(clutter_do_event): use the above utility functions, also reindented
the source.
clutter_ungrab_keyboard and clutter_get_keyboard_grab, in
clutter_do_event deliver keyboard related events only to the
actor with the keyboard grab if a grab exists.
* clutter/clutter-private.h: added keyboard_grab_actor to context.
* tests/test-grab.c: added testing for testing the keyboard grab.
* clutter/clutter-actor.[ch]: Massive API clean-ups. Initial
fixes for bugs #614 and #628.
* clutter/clutter-main.c:
* clutter/clutter-stage.c: Update internal usage of the actor
API.
* tests/test-events.c: Update test suite.
clutter_ungrab_pointer and clutter_get_pointer_grab, in
clutter_do_event deliver pointer related events only to the
actor with the pointer grab if a grab exists.
* clutter/clutter-private.h: added pointer_grab_actor to context.
* tests/Makefile.am:
* tests/test-grab.c: added test for testing the pointer grab.
* clutter/clutter-timeline.[ch]: Add ClutterTimeline:direction
property, defining the direction (forward or backward) of the
timeline.
* tests/test-timeline.c: Test the direction property.
* clutter.symbols: Update exported symbols
* clutter/clutter-effect.h:
* clutter/clutter-effect.c:
(clutter_effect_template_new_for_duration): Add a simple constructor
for implicitly creating a ClutterTimeline with a given duration.
* clutter.symbols: Update with the new public symbols
* clutter/clutter-script.h:
* clutter/clutter-script-private.h:
* clutter/clutter-script.c:
(parse_signals), (json_object_end),
(signal_info_free), (object_info_free): Parse the "signals"
member for GObjects.
(clutter_script_connect_signals),
(clutter_script_connect_signals_full): Add new API for autoconnecting
signal handlers using the UI definition files.
* tests/test-script.c:
* tests/test-script.json: Test signal autoconnection.
* clutter/Makefile.am:
* clutter/eglx/Makefile.am:
* clutter/eglx/clutter-backend-egl.c:
* clutter/eglx/clutter-backend-egl.h:
* clutter/eglx/clutter-eglx.h:
* clutter/eglx/clutter-event-egl.c:
* clutter/eglx/clutter-stage-egl.c:
* clutter/eglx/clutter-stage-egl.h:
* clutter/glx/Makefile.am:
* clutter/glx/clutter-backend-glx.c:
* clutter/glx/clutter-backend-glx.h:
* clutter/glx/clutter-event-glx.c:
* clutter/glx/clutter-glx.h:
* clutter/glx/clutter-stage-glx.c:
* clutter/glx/clutter-stage-glx.h:
* clutter/x11/Makefile.am:
* clutter/x11/clutter-backend-x11-private.h:
* clutter/x11/clutter-backend-x11.c:
* clutter/x11/clutter-backend-x11.h:
* clutter/x11/clutter-event-x11.c:
* clutter/x11/clutter-stage-x11.c:
* clutter/x11/clutter-stage-x11.h:
* clutter/x11/clutter-x11.h:
Create a new X11 backend class of which EGL and GLX 'real' backends
then subclass. Effectively shares all X11 code between both backends
avoids code duplication and brings many missing features to EGL X
backend. Requires some cleanup and testing. (#518)
* clutter/cogl/gles/cogl.c: (cogl_color):
Add define to use color4ub only if configure finds it.
If not fall back to old code.
* configure.ac:
Drop support for vincent checks.
Drop sdles backend.
Specifically check for color4ub call.
* clutter/clutter-clone-texture.c (set_parent_texture): Hide the
clone texture only if it was visible, and show it again if we
are adding a visible texture.
* tests/test-script.json: Test the CloneTexture actor.
* clutter/clutter-actor.[ch]: Rename clutter_actor_get_id() to
clutter_actor_get_gid().
(clutter_actor_set_parent): Use GUINT_TO_POINTER().
* clutter/clutter-deprecated.h: Add a replacement warning for
clutter_actor_get_id().
* clutter/clutter-texture.c (texture_upload_data): Use
clutter_actor_get_gid(), and don't leak the filename string.
* clutter/clutter-scriptable.[ch]: Rename ::set_name and ::get_name
to ::set_id and ::get_id, to avoid potential confusion with the
ClutterActor:name property.
* clutter/clutter-script.h:
* clutter/clutter-script.c (clutter_script_construct_object): Use
clutter_scriptable_set_id().
(clutter_get_script_id): Add a public function to retrieve the ID
used in the UI definition files from an object.
* clutter/clutter-actor.c: Do not set the name of the actor with
the ID set in the UI definition files.
* tests/test-script.c: Test clutter_get_script_id().
* clutter.symbols: Update with the new symbols.
* clutter/clutter.h: include clutter-deprecated.h
* clutter/clutter-deprecated.h: added file containing macros that
provides more meaningful errors when compiling clutter using code that
uses deprecated functions.
rearanged other structs to have source in the same position.
* clutter/clutter-event.c: (clutter_event_get_source): modified to use
the any event.
(clutter_event_free): removed unused variable.
* clutter/clutter-main.c: (deliver_event), (clutter_do_event): reduced
amount of code. As well as deliver button-release events to the stage.
* clutter/cogl/gles/cogl.c: (cogl_color):
Switch over to using glColor4ub in the GLES backend. It's available in
the header file but missing in the reference manual.
* clutter/clutter-actor.[ch]: Fix the declaration of the
class handlers for the ::captured-event, ::enter-event and
::leave-event signals; the function signatures were missing
the return value the signals marshallers were expecting, and
their names weren't respecting the convention for event-related
signals.
* clutter/clutter-box.c (clutter_box_dispose): Call unparent()
on the children, instead of destroy(), to avoid a double free
and a crash when destroying a ClutterBox.
from interface (and all implementations of it) since this
functionality is now implemented using a global hash.
* clutter/clutter-box.c:
* clutter/clutter-group.c:
* configure.ac:
* clutter/cogl/gl/cogl-defines.h.in: The OS X backend has a funny
OpenGL header location, so it basically did break every application
including clutter/cogl.h because the GL header inclusion depended
on symbols defined into Clutter's config.h. Now, we define the
GL header into the configure template and use it to create the
cogl-defines.h file cogl.h includes.
* clutter/clutter-script.c: Add the :filename and :filename-set
properties, to retrieve the path of the currently parsed file (if
:filename-set is TRUE) from the ClutterScriptable implementations.
* clutter/json/json-parser.c:
(json_scanner_msg_handler): Set the GError to be returned by
the parsing functions into the GScanner error message handler.
(json_parser_object): Return the symbol token in case we have
a parse error after the member name.
(json_parser_load_from_data): Propagate the error set in the
message handler, if any.
* clutter/json/json-node.c (json_node_free): Unref the objects
only if are set, to avoid a couple of needless criticals we
get on error.
* tests/test-script.json: More properties.
* clutter/clutter-script.[ch]: Slight API change in the
clutter_script_get_objects() function: now it takes
object name/object return location pairs and returns the
number of objects found and returned.
* tests/test-script.c: Exercise the clutter_script_get_objects()
function.
* clutter/clutter-color.c (clutter_color_to_string): Update the
documentation for the format of the returned string, and remove
the note: now clutter_color_parse() can parse the string this
function returns.
* clutter/clutter-main.c: Add a --clutter-default-fps run-time
switch and CLUTTER_DEFAULT_FPS environment variable support for
setting the default frame-rate at run-time.
* clutter/clutter-script.h:
* clutter/clutter-script.c: Add a ::get_type_from_name() virtual
function for bindings to override. The current implementation
calls g_type_from_name() and our lazy class resolver.
* clutter.symbols: Update.
* doc/reference/clutter-sections.txt: Update.
* clutter/clutter-behaviour-path.c: Reverse the list of
parsed knots, to preserve the real ordering after prepending
them (thanks to Øyvind for spotting this).
* clutter/clutter-behaviour-bspline.c: Ditto as above.
* clutter/clutter-actor.c: Implement part of the ClutterScriptable
interface, using the ClutterActor API to set and get the name
of an actor.
(clutter_geometry_copy), (clutter_geometry_free): Use
the slice allocator to avoid fragmentation when setting
properties and emitting signals (that is: when packing
boxed types into GValues).
(clutter_actor_box_copy), (clutter_actor_box_free),
(clutter_vertex_copy), (clutter_vertex_free): Ditto.
* clutter/clutter-actor.h:
* clutter/clutter-actor.c:
(clutter_actor_push_transform_child),
(clutter_actor_pop_transfomr_child): Simple wrappers around
COGL API, which avoid including clutter/cogl.h when writing
container actors outside Clutter.
* clutter/Makefile.am:
* clutter/clutter.h:
* clutter/clutter-scriptable.[ch]: Add the ClutterScriptable
interface; by implementing this interface, a class can
override the UI definition parsing and transform complex data
types into GObject properties, or allow custom properties.
* clutter/clutter-script.c:
* clutter/clutter-script-parser.c:
* clutter/clutter-script-private.h: Rearrange the code and
use the ClutterScriptable interface to parse and build the
custom properties. This cleans up the code and also it makes
it more reliable (the complex type parsing is now done using
the target type and not just the name of the property).
* clutter/clutter-json.h: Header for including the JSON
parsing and data types.
* clutter/json/json-types.h: Add JSON_NODE_VALUE_TYPE() macro.
* clutter/json/Makefile.am: Install the JSON headers into a
private location. This might change in the future, and might
also cause collisions if you're using JSON-GLib and Clutter
at the same time, so be warned.
* clutter/clutter-script-private.h:
* clutter/clutter-script.h:
* clutter/clutter-script.c: Allow id-less objects: as long
as they have a "type" member, a unique id will be provided.
(json_object_end): Add merge id to the object information
structure.
(apply_behaviours), (add_children): Keep the unresolved
objects around.
(construct_stage), (clutter_script_construct_object): If an
object has unresolved children or behaviours try resolving
them when we ask for it.
(json_parse_end), (clutter_script_ensure_objects): Ensure
that the objects are fully constructed as best as we can when
finished parsing.
(object_info_free), (remove_by_merge_id):
(clutter_script_unmerge_objects): Remove objects under the
same merge id returned by the loading functions. (Fixes
bug #558)
* clutter/clutter-actor.c:
(clutter_actor_set_property), (clutter_actor_get_property),
(clutter_actor_class_init): Add the :reactive property, to
control reactiveness using the UI definition files.
(clutter_actor_reparent): Do not assume the parent is a
ClutterContainer, and call the container API only if needed.
(clutter_actor_destroy): Remove from the parent if needed,
just like the documentation says.
* clutter/json/json-object.c: Automatically transform every
delimiter into an underscore.
* clutter/clutter-script.c: Implement the "parent_texture"
property translation for ClutterCloneTextures, using the
passed id of the parent texture.
* clutter/clutter-timeline.[ch]: Added ClutterTimeline:duration,
a property for setting the duration of a timeline in milliseconds.
The property comes with accessors and a new constructor. The
frame rate used is the default value.
* clutter/clutter-private.h:
* clutter/clutter-main.[ch]: Add clutter_get_default_frame_rate()
and clutter_set_default_frame_rate(); these two functions control
the default frame rate to be used when creating timelines. Currently
is set to 60 frames-per-second.
* clutter.symbols:
Added a bunch of missing symbols.
* clutter/clutter-script.c:
* json/json-node.c:
Use g_slice_new0 instead of g_slice_new to avoid passing garbage to functions.
* tests/test-threads.c:
Replaced non-portable sleep() with g_usleep().
* clutter/clutter-actor.c:
More events documentation.
* clutter/clutter-event.c:
* clutter/clutter-event.h:
Add synthetic flag and make put_event use it
(via modded patch from pippin)
* clutter/clutter-main.c: (clutter_do_event):
dont use put event anymore when pushing enter/leave events.
* clutter/clutter-script.c (construct_timline),
(parse_member_to_property): Transfer ownership of the
implicit timelines to the behaviour, so that they get
unreferenced when the behaviour is destroyed.
(parse_member_to_property): Reverse the list of children
and behaviours.
Portability fixes:
* clutter/clutter-private.h:
Bracket #include "unistd.h" with #ifdef HAVE_UNISTD_H
* clutter/clutter-fixed.c:
Use "", not <> for inclusion of local files.
(clutter_sqrtx): forward declare local variables.
* clutter/clutter-debug.h:
Added non-gcc (c99) implementation of variadic debug macros for
when not compiling with gcc.
* clutter/pango/pangoclutter-render.c:
Fixed some strange uses of CLUTTER_NOTE() + stripped trailing
whitespace.
smaller than the original, seems to work well down to about a scale
of 50%.
* clutter/pango/pangoclutter-fontmap.c:
(pango_clutter_font_map_default_substitute): turn off hinting.
* clutter/pango/pangoclutter-render.c: request linear filtering
instead of nearest neighbour when scaling down.
* tests/test-text.c: replaced test with a a test that renders a sample
grid with various pixel sizes and scales for visual inspection of
text rendering quality.
* clutter/clutter-actor.c: Remove the ::event-after signal:
three event layers to connect to seems a bit overkill.
(clutter_actor_event): Return FALSE, not TRUE by default,
as g_signal_emit() will change the return value if no
handlers are connected
* clutter/clutter-stage.c: Emit ::notify when we change
the fullscreen property.
* clutter/clutter-script.c: Add more documentation for the
definition format and keywords.
(translate_property): Collapse the G_TYPE_ENUM and G_TYPE_FLAGS
cases into one, to simplify the code.
* tests/test-script.c: Test enumeration conversion by using
a value different from the default.
* clutter/json/json-types.h:
* clutter/json/json-array.c:
* clutter/json/json-object.c: Resync with the upstream copy
of JSON-GLib; add json_object_remove_member() and
json_array_remove_element() and fix the g_hash_table_get_keys()
replacement for GLib 2.12.
* clutter/clutter-script.c: Clean up the complex properties
parsing code.
* clutter/json/json-parser.c: Use the commodity JsonNode API
and accept bare values as root nodes.
* clutter/clutter-script-private.h:
* clutter/clutter-script.c: Unreference the created objects
only if they are top-levels, like ClutterBehaviour and
ClutterTimelines. Actors have floating references, so we
just transfer ownership to their containers, and the stage
is owned by the backend. Add the "type_func" key to the
object definition, so the user can supply its own GType
function if the class name doesn't follow the GObject rules.
Document the ClutterScript public API.
* clutter/clutter-script.c (clutter_script_get_object): Construct
the requested object if it hasn't been already. This allows
referencing objects within the same snippet.
* tests/test-script.c: Declare a timeline and use it inside
multiple behaviours; apply multiple behaviours to various
actors, then retrieve the timeline to start it when the test
runs.
* clutter/eglnative/clutter-backend-egl.c:
(clutter_backend_egl_dispose):
Call eglTerminate() on the display when the backend is disposed of.
* clutter/eglnative/clutter-stage-egl.c:
(clutter_stage_egl_realize):
Don't use the createNativeWindow() call, it's not generic EGL.
* clutter/clutter-script-private.h:
* clutter/clutter-script.h:
* clutter/clutter-script.c: Add licensing information to
the newly added files.
* clutter/clutter-script.c: Support creating behaviours with
ClutterScript. ClutterAlpha objects are implicit, but
timelines can be both explicit objects using their id or
implicit objects. Make the property resolution and translation
more robust. Support the pixbuf property.
* tests/test-script.c: Test the newly added features.
* docs/reference/clutter-docs.sgml:
* docs/reference/clutter-sections.txt: Add ClutterScript.
* clutter/clutter-actor.c:
* clutter/clutter-actor.h:
* clutter/clutter-private.h:
* clutter/clutter-main.c:
Add a hash to global clutter context mapping all parented actor
id's to actors.
Add clutter_get_actor_by_id() call.
Convert picking machinery to use above.
(performance/simpler composite actor creation)
* clutter/clutter-stage.c: (clutter_stage_fullscreen),
(clutter_stage_unfullscreen), (clutter_stage_event):
Only set the fullscreen property on stage state fullscreen event(#545)
Experimental as could be painful to implement on non X backends.
* clutter/clutter-script.c (json_parse_end):
* clutter/json/json-object.c (json_object_get_members): Replace
the GLib 2.14 API with the equivalent code for GLib < 2.14.
* configure.ac: Revert the dependency bump.
Initial implementation of the UI definition files. (#424)
* clutter/json/Makefile.am:
* clutter/json/*.[ch]: In-tree copy of JSON-GLib, a GLib-based
JSON parser/generator library. We use it in-tree because we might
need to change the API. Ideally, we'd depend on it.
* clutter/clutter.h:
* clutter/clutter-script-private.h:
* clutter/clutter-script.[ch]: ClutterScript, the scenegraph
generator class. It parses JSON streams in form of buffers and
files and builds the scene.
* clutter/clutter-debug.h:
* clutter/clutter-main.c: Add a "script" debug flag
* clutter/Makefile.am: Build glue.
* tests/Makefile.am:
* tests/test-script.c: Add a test case for the ClutterScript.
* configure.ac: Depend on GLib 2.14, so we can use the
g_hash_table_get_key() and g_hash_table_get_values() functions
for the time being; we can probably reimplement those, but we
are going to need 2.14 anyway if we are going to implement a
list model using GSequence.
* clutter/clutter-actor.c (clutter_actor_get_size): Implement
get_size() as a wrapper around clutter_actor_query_coords()
instead of calling g_object_get() twice.
(clutter_actor_init): Initialise the box in one call.
* clutter/clutter-actor.[ch]: Remove the ::event-after signal
class handler, as it's not meant to be overridden by sub-classes.
(clutter_actor_class_init):
Make every event-related signal return a boolean: return TRUE
in a signal handler to block the emission. The value is accumulated
automatically by the signal API.
(clutter_actor_event): If ::event returns TRUE, skip to emitting
::event-after. Return the value accumulated by the signal emission
chain.
* clutter/clutter-private.h: Rename _clutter_boolean_accumlator().
* clutter/clutter-main.c (clutter_do_event): If clutter_actor_event()
returns TRUE then stop the event emission chain from child to parent.
* clutter/clutter-stage.c (clutter_stage_event): Behave like
clutter_actor_event().
(clutter_stage_get_key_focus),
(clutter_stage_set_key_focus): Avoid a nasty circular reference
issue: if the actor passed to set_key_focus is NULL then the stage
has the key focus.
* tests/test-events.c: Update the events test with the API
changes.
* clutter/clutter-actor.c:
(clutter_actor_set_scale_with_gravityx):
Use CLUTTER_QMUL for better precission (#532, patch by Gwenole
Beauchesne).
* clutter/clutter-color.c:
(clutter_color_to_hlsx):
Added missing CLUTTER_INT_TO_FIXED conversion (#544, patch by Neil
Roberts).
* clutter/clutter-event.h:
Removed unused POINTER_ENTER and POINTER_LEAVE states. (#546)
* clutter/clutter-stage.c: (clutter_stage_fullscreen),
(clutter_stage_unfullscreen):
Only Change fullscreen prop if the backend implements fullscreen
methods. (#545)
Merge from stable
* clutter/eglnative/clutter-event-egl.c:
Flag every device click after the first as motion events
instead of button presses. (#505, Shreyas Srinivasan)
Apply a patch from Neil Roberts (bug 488) for fixing the drawing of the
rectangle border, by not overdrawing the rectangle on the border and by
doing the correct check on the border colour.
* clutter/clutter-main.c: (_clutter_do_pick):
Call glFinish before reading pixels
* clutter/eglx/clutter-stage-egl.c: (clutter_stage_egl_realize):
Add missing read surface in making context current.
Above fixes via Kate Alhola.
* clutter/glx/clutter-glx.h:
Add missing filter funcs so there actually exported
* clutter/clutter-actor.c:
* clutter/clutter-event.h:
* clutter/clutter-main.c:
* clutter/clutter-stage.c:
* clutter/clutter-stage.h:
* clutter/glx/clutter-backend-glx.c:
* clutter/glx/clutter-backend-glx.h:
* clutter/glx/clutter-event-glx.c:
* clutter/glx/clutter-stage-glx.c:
* clutter/glx/clutter-stage-glx.h:
Add initial support for stage state events.
Fix fullscreening for an already mapped stage.
* tests/test-events.c:
Print out info from the above. Blue button now toggles
fullscreen.
* clutter/clutter-effect.c:
* clutter/clutter-effect.h:
Add a setting for templates to ref or clone underlying
timelines. (As to improve sync issues like those in foofone)
* tests/test-timeline.c:
Also add completed signals.
* clutter/cogl/gles/cogl.c: (cogl_texture_image_2d):
* configure.ac:
Forward port from stable branch. RGB Image fixes gles
and check for lower case libgles_cm.
The GLib main loop allows destroying sources while still in the dispatcher
function, so whether the Clutter threading lock is being held or not is
actually unpredictable by the library. This might be fixed in GLib, so we
just do what GTK+ does for the time being and wait.
See bug: http://bugzilla.gnome.org/show_bug.cgi?id=459555
When we are in the the event translation function sometimes we need to
synthesise events: the double and triple click events are synthetic events
placed on the queue after a sequence of events has been received, for
instance.
Until now, the events were placed on the queue after the translation from
the native events was successful. This led to a loss of ordering because
we put the synthesised event on the queue before the last event that
triggered it.
This patch puts the events on the queue before translating them, with a
"pending" flag set; if the translation sequence is completed then the flag
is removed - otherwise the event is removed from the queue altogether. The
queue manipulation functions have been modified to ignore the "pending"
flag when looking for events.
This patch also adds a private structure overlayed on the ClutterEvent
struct so that we can extend the events with private data without exposing
it in the public API.
* clutter/Makefile.am:
* clutter/clutter-enum-types.h.in:
* clutter/clutter-enum-types.c.in: Use template files for
glib-mkenums; this makes the Makefile template a bit more
clean and the enum types generation more customisable (e.g.
when GLib 2.14 has been released, we can use g_once_init_enter()
and g_once_init_leave() to have thread-safe GType functions
for the enum types as well).
