And with it, gtk_widget_get_visual() and gtk_widget_set_visual() are
gone.
We now always use the RGBA visual (if available) and otherwise fall back
to the system visual.
* Cover letter
Having a single header file for all autocleanups definitions was a
reasonable stop-gap measure, but now GTK+ is starting to use G_DECLARE_*
macros. This means that every class using a G_DECLARE_* macro will need
to include "gtk.h" to avoid compiler warnings, which is not acceptable.
By moving the G_DEFINE_AUTO* use to the header that defines the type we
allow using the G_DECLARE_* macros without sacrificing the ability to
include only the needed files when deriving from a class.
* Commit
This commit changes all includes relative to GtkWindow to define their
own autocleanup macros.
There are currently three widget that implement such a property, and
there are other widgets for which the behavior can make sense. It
seems like a good time to add the property to GtkWidget itself so
subclasses can choose to respect it without adding their own property.
https://bugzilla.gnome.org/show_bug.cgi?id=757269
This is so widgets can queue a rerun of their allocation logic, but
without triggering resizes everywhere.
For now, it just calls gtk_widget_queue_resize().
This allows a widget to override global font_options, such as hinting and
subpixel order. The widget's PangoContext is updated when this is set.
Some update code from gtk_widget_update_pango_context was moved to
update_pango_context so that gtk_widget_update_pango_context runs it.
http://bugzilla.gnome.org/show_bug.cgi?id=751677
These functions, while added for use by the GTK inspector, are generally
useful to applications that need to resolve what action groups are
available to a particular GtkWidget.
https://bugzilla.gnome.org/show_bug.cgi?id=741386
And handle the fact that drawing bounds are now handled by this API and
the corresponding gtk_widget_get_clip().
Also add _gtk_widget_supports_clip() function to check if a widget has
been ported to the new world.
The propagation phase property/methods in GtkEventController are gone,
This is now set directly on the GtkWidget add/remove controller API,
which has been made private.
The only public bit now are the new functions gtk_gesture_attach() and
gtk_gesture_detach() that will use the private API underneath.
All callers have been updated.
Listen for notify::sequence-state-changed on the controller, so the
only way to manipulate a sequence state are gtk_gesture_set_sequence_state()
and gtk_gesture_set_state().
Also, make use of gesture groups, so the sequence state is set at once
on all gestures pertaining to a single group. Within a widget, if a sequence
is claimed on one group, it is made to be denied on every other group.
GtkEventController may be certainly useful to keep event
handling self-contained in other places than gestures, but
the current widget API is highly related to gestures, so
just using GtkGesture as the argument there will be quite
more convenient. The other places where GtkEventController
make sense as a base object will better provide their own
hooks.
A controller can be optionally hooked on the capture or the bubble
phase, so the controller will automatically receive and handle events
as they arrive without further interaction.
The root window is a fairly X-centric concept, and it
really has no place in the GtkWidget API. Plus, this
is a rarely-used one-line convenience function with
poor documentation.
Add margin-{start,end} and gtk_widget_{get,set}_margin_{start,end}
and drop margin-{left,right} and gtk_widget_{get,set}_margin_{left,right}.
margin-{start,end} handle right also in RTL.
https://bugzilla.gnome.org/show_bug.cgi?id=710238
We rename the gtk_widget_class_bind_template_child{_internal}
macros by appending a _private to their name. Otherwise, it
would be too magic to pass the 'public' names as arguments,
but affect a member of the Private struct. At the same time,
Add two new macros with the old names,
gtk_widget_class_bind_template_child{_internal} that operate
on members of the instance struct.
The macros and functions are inconsistently named, and are not tied to
the "template" concept - to the point that it seems plausible to use
them without setting the template.
The new naming scheme is as follows:
gtk_widget_class_bind_template_child_full
gtk_widget_class_bind_template_callback_full
With the convenience macros:
gtk_widget_class_bind_template_child
gtk_widget_class_bind_template_child_internal
gtk_widget_class_bind_template_callback
https://bugzilla.gnome.org/show_bug.cgi?id=700898https://bugzilla.gnome.org/show_bug.cgi?id=700896
Using an offset from the struct means you can have children in
both the public and private (via G_PRIVATE_OFFSET) parts of the
instance. It also matches the new private macros nicer.
https://bugzilla.gnome.org/show_bug.cgi?id=702563
Signed-off-by: Emmanuele Bassi <ebassi@gnome.org>
gtk_widget_preferred_size() is only useful if you want to quickly port a
widget from GTK2 sizing code to GTK3 but does not properly work with
height-for-width as used in GTK. So we don't want to encourage people to
use it. In particular we want people to convert to height-for-width
before adding baseline support to their widgets.
Since widgets now cache drawn state we allow them to override
queue_draw_region to detect when some region of the widget
should be redrawn. For instance, if a widget draws the
background color in a pixel cache we will need to invalidate
that when the style context changes which queues a repaint.
This modifies the size machinery in order to allow baseline support.
We add a new widget vfunc get_preferred_height_and_baseline_for_width
which queries the normal height_for_width (or non-for-width if width
is -1) and additionally returns optional (-1 means "no baseline")
baselines for the minimal and natural heights.
We also add a new gtk_widget_size_allocate_with_baseline() which
baseline-aware containers can use to allocate children with a specific
baseline, either one inherited from the parent, or one introduced due
to requested baseline alignment in the container
itself. size_allocate_with_baseline() works just like a normal size
allocation, except the baseline gets recorded so that the child can
access it via gtk_widget_get_allocated_baseline() when it aligns
itself.
There are also adjust_baseline_request/allocation similar to the
allocation adjustment, and we extend the size request cache to also
store the baselines.
Setting this means baseline aware containers should align the widget
according to the baseline. For other containers this behaves like
FILL.
In order to not suprise old code with a new enum value we always
return _FILL for _BASELINE unless you specifically request it via
gtk_widget_get_valign_with_baseline().
This commit implements the needed machinery for GtkWidget
to build it's composite content from GtkBuilder XML and
adds the following API:
o gtk_widget_init_template()
An api to be called in instance initializers of any
GtkWidget subclass that uses template XML to build it's components.
o gtk_widget_class_set_template()
API to associate GtkBuilder XML to a given GtkWidget subclass
o gtk_widget_class_automate_child()
API to declare an object built by GtkBuilder to be associated
with an instance structure offset and automatically set.
o gtk_widget_get_automated_child()
API for bindings to fetch a child declared to be automated by
gtk_widget_class_automate_child(), for the case where bindings
do not generate GObjects under the hood and cannot use structure
offsets to resolve composite object pointers.
o gtk_widget_class_declare_callback[s]()
Declare static functions to be used in signal callbacks from
a given class's template XML
o gtk_widget_class_set_connect_func()
API for bindings to override the signal connection machinery
for a given GtkWidget derived class.
Deprecate gtk_widget_push_composite_child, gtk_widget_pop_composite_child,
gtk_widget_set_composite_name, gtk_widget_get_composite_name.
This API is just bloat and was never useful, this patch deprecates
it and removes all internal calls to the composite child APIs
Add a very simple GtkWidget function for an "tick" callback, which
is connected to the ::update signal of GdkFrameClock.
Remove:
- GtkTimeline. The consensus is that it is too complex.
- GdkPaintClockTarget. In the rare cases where tick callbacks
aren't sufficient, it's possible to track the
paint clock with ::realize/::unrealize/::hierarchy-changed.
GtkTimeline is kept using ::update directly to allow using a GtkTimeline
with a paint clock but no widget.
Switch GtkStyleContext to using GdkFrameClock. To do this, add a new
UPDATE phase to GdkFrameClock.
Add a GdkFrameClockTarget interface with a single set_clock() method,
and use this to deal with the fact that GtkWidget only has a frame
clock when realized.
https://bugzilla.gnome.org/show_bug.cgi?id=685460
This adds gtk_widget_get/set_opacity, as well as a GtkWidget.opacity
property. Additionally it deprectates gtk_window_get/set_opacity and
removes the GtkWindow.opacity property (in preference for the new
identical inherited property from GtkWidget, which should be ABI/API
compat).
The implementation is using the new gdk_window_set_opacity child
window support for windowed widgets, and cairo_push/pop_group()
bracketing in gtk_widget_draw() for non-window widgets.
https://bugzilla.gnome.org/show_bug.cgi?id=687842
This replaces the previously hardcoded calls to gdk_window_set_user_data,
and also lets us track which windows are a part of a widget. Old code
should continue working as is, but new features that require the
windows may not work perfectly.
We need this for the transparent widget support to work, as we need
to specially mark the windows of child widgets.
https://bugzilla.gnome.org/show_bug.cgi?id=687842
This allows adding a GActionGroup with a given name at an arbitrary
point in the widget tree.
This patch also adds an internal _get_action_muxer() API. Calling this
will create a GActionMuxer associated with the widget. The parent of
the muxer will be the muxer of the widget's conceptual parent. For
non-menus, that is the normal parent. For menus, it is the attach
widget.
In this way, we end up with a hierarchy of GActionMuxer that largely
reflects the hierarchy of GtkWidget, but only in places that the action
context has been requested. These muxers are the ones on which the
inserted actions groups are installed.
A following patch will add a user of this API.
When I added the versioned annotation, I accidentally backdated
it, so the Deprecated: tag in the docs said 3.4, but the annotation
said 3.0. Fix it so we say 3.4 in both places.
In particular gtksettings.h and gtkstylecontext.h needed to be included
in lots of places now.
Also, I order the includes alphabetically in a bunch of headers.
This patch adds a capture phase to GTK+'s event propagation
model. Events are first propagated from the toplevel (or the
grab widget, if a grab is in place) down to the target widget
and then back up. The second phase is using the existing
::event signal, the new capture phase is using a private
API instead of a public signal for now.
This mechanism can be used in many places where we currently
have to prevent child widgets from getting events by putting
an input-only window over them. It will also be used to implement
kinetic scrolling in subsequent patches.
http://bugzilla.gnome.org/show_bug.cgi?id=641836
We automatically request more motion events in behalf of
the original widget if it listens to motion hints. So
the capturing widget doesn't need to handle such
implementation details.
We are not making event capture part of the public API for 3.4,
which is why there is no ::captured-event signal.
This patch changes all uses of GDK_DEPRECATED(_FOR) in gtk headers
by the versioned variants, GDK_DEPRECATED_IN_3_x(_FOR). At the same
time, we add GDK_AVAILABLE_IN_3_x annotations for all API additions
in 3.2 and 3.4.
Add enum GdkModifierIntent which identifies use cases for modifier masks
and GdkKeyMap::get_modifier_mask(). Add a default implementation which returns
what is currently hardcoded all over GTK+, and an implementation in the
quartz backend. Also add gtk_widget_get_modifier_mask() which simplifies
things by doing widget->display->keymap->get_modifier_mask().
This commit introduces a new setting, gtk-visible-focus, backed
by the Gtk/VisibleFocus X setting. Its three values control how
focus rectangles are displayed.
'always' is equivalent to the traditional GTK+ behaviour of always
rendering focus rectangles.
'never' does what it says, and is intended for keyboardless
situations, e.g. tablets.
'automatic' hides focus rectangles initially, until the user
interacts with the keyboard, at which point focus rectangles
become visible.
https://bugzilla.gnome.org/show_bug.cgi?id=649567
The function is supposed to bypass the ATK registry. For 2 reasons:
1) We get rid of a lot of boilerplate madness.
2) The registry allows creating multiple accessibles per widget and we
don't.
The old code for registries is still there.
The constant size request mode defines a request mode where
height-for-width geometry is unneeded, thus optimizing GTK+
by reducing the overall amount of requests that need to be
performed and cached while resizing an interface.
This function is a more convenient variant than
gtk_widget_set_device_events(), as it will
1) perform changes down a widget hierarchy, to
all windows.
1) use the same event mask than gdk_window_get_events()
The old functions to get core pointer and devices list are gone as
well. This slice is entirely replaced internally by multidevice
handling and may just go.
This allows us to add a check before executing
->get_preferred_height_for_width() to ensure we always
request for at least the minimum required size (and lets
us remove the warning in gtkcontainer.c telling implementors
to do this check manually from thier container implementations).
gtk_widget_override_*() deprecates gtk_widget_modify_*(). There are
only functions to modify fg/bg/font/symbolic color, If anything more
fancy/complex is needed. There is the possibility of adding a
GtkStyleProvider yourself.
gtk_widget_(set|unset|get)_state_flags() has been added, using GtkStateFlags
to represent the widget state. GtkStateType API has been implemented on top
of the new one.
There will be one GtkStyleContext per widget, at the moment its
lifetime is tied to the widget's, but it could be narrowed down
to GTK_WIDGET_REALIZED.
alignment/margin vfuncs adjust_size_request/allocation
Now get_height_for_width() will internally update the for_width
before passing it to the real height_for_width() vfunc, allowing
margins and extra space for alignments to be stripped, thus requesting
sufficient height for greater than natural widths (and also accounting
for margins properly). Test case adjusted in testadjustsize to ensure
proper behavior.
The GtkScrollable interface provides "hadjustment" and "vadjustment"
properties that are used by GtkScrolledWindow. It replaces
the ::set_scroll_adjustment signal. The scrollable interface
also has ::min-display-width/height properties that can be
used to control the minimally visible part inside a scrolled window.
- add slots for damage-event, move-focus and keynav-failed
- reorder signals a bit so related stuff is grouped together
- some indentation fixes in the GtkWidgetClass
- remove the move-focus compat hack from GtkTextView
- turn the move-focus compat hack in GtkWindow into properly
implementing GtkWidget::move-focus()
GtkWidget now has flags for horizontal and vertical expand, and
a compute_expand() method. compute_expand() is used by containers
to set a default expand flag. (If a widget has expand set explicitly,
it always overrides the results of compute_expand.)
GtkContainer has a default implementation of compute_expand which
simply walks over all child widgets and sets expand=TRUE
if any child is expanding.
The overall effect is that you only have to set expand on
leaf nodes in the widget tree, while previously you had to
set expand all the way up the tree as you packed every
container. Also, now containers need not have their own child
properties for expand.
For old containers which do have "expand" child properties,
they should override compute_expand and include the child
properties in whether the container is expand=TRUE.
Also, the old container should use
"child_prop_expand || gtk_widget_compute_expand()" everywhere
it previously used simply "child_prop_expand"
https://bugzilla.gnome.org/show_bug.cgi?id=628902
It turns out that the previous handling of just providing a way to set
visuals just on toplevels was not sufficient. In particular it
complicated the various implementations of the tray icon specification.
This patch reintroduces gtk_widget_set_visual() which behaves very
similar to GTK2's gtk_widget_set_colormap().
A future commit will remove the gtk_window_set_visual() function.
The function reverses the transform that GTK does before emitting a draw
event. So we can use it in "old" widgets to revert the coordinate system
properly.
It doesn't make sense to keep them separate as GtkSizeRequest requires a
GtkWidget and GtkWidget implements GtkSizeRequest, so you can never have
one without the other.
It also makes the code a lot easier because no casts are required when
calling functions.
Also, the names would translate to gtk_widget_get_width() and people
agreed that this would be a too generic name, so a "preferred" was added
to the names.
So this patch moves the functions:
gtk_size_request_get_request_mode() => gtk_widget_get_request_mode()
gtk_size_request_get_width() => gtk_widget_get_preferred_width()
gtk_size_request_get_height() => gtk_widget_get_preferred_height()
gtk_size_request_get_size() => gtk_widget_get_preferred_size()
gtk_size_request_get_width_for_height() =>
gtk_widget_get_preferred_width_for_height()
gtk_size_request_get_height_for_width() =>
gtk_widget_get_preferred_height_for_width()
... and moves the corresponding vfuncs to the GtkWidgetClass.
The patch also renames the implementations of the vfuncs in widgets to
include the word "preferrred".
Previously, we tried to move the context's origin to the widget's top
left location, no matter what window the paint was happening on. Now we
only do that for child windows of the widget's window and leave the
context untouched for windows that the widget has created outside its
own hierarchy. In those casses, we also don't clip the context to
the widget's allocation.
Includes fixes to GtkHandlebox for this effect and fixes all known
issues with it.
These semantics assume that gtk_widget_draw() should only draw the parts
of a widget that are inside child windows and not draw stuff that is
located in completely different GdkWindows. In the handlebox case, it
means that it should only draw the handle when it is attached, but not
when it isn't. We'll likely need a special draw function for the
detached handlebox if we want to draw it.
I've seen (and written) quite some widgets (and theme engines) that use
cairo_paint() to draw the background. So avoiding overdraw makes sense.
Also move all that setup into a _gtk_widget_draw_internal() function
that will be used by all functions that can be used by other functions
that draw widgets.
For now, the draw signal is emitted by default from the expose event, so
widgets can chose to either implement the expose event or the draw
function.
This is for the transitional period from expose event to draw signal.
Note that for now subclasses can only implement the draw function when
none of their parents implemented the expose event.
The functions are gtk_widget_get_allocated_width() and
gtk_widget_get_allocated_height().
They are currently identical to using width/height of
gtk_widget_get_allocation(), but are introduced for ease of use (no need
to use a custom struct) and to free people from having to think about
allocation.x and allocation.y (which is where the origin of the cairo
context in GtkWidget::draw is located).
This removes:
gtk_widget_set_default_colormap()
gtk_widget_get_default_colormap()
gtk_widget_get_default_visual()
Colormaps are gone, and the default visual is the system visual of the
default screen.
Replace gtk_widget_shape_combine_region() with
gtk_widget_shape_combine_mask() and
gtk_widget_input_shape_combine_region() with
gtk_widget_input_shape_combine_mask().
As GdkBitmap is going away, and the region equivalents already exist,
this seems like pretty much the default step to take.
Includes code to fix up the users.
h-align = START,END,CENTER,FILL
v-align = START,END,CENTER,FILL
margin-left,right,top,bottom
margin
These should obsolete all such similar properties on
layout containers, GtkMisc, GtkAlignment, GtkContainer::border-width
Margin is outside the size request.
If margin were not outside the set_size_request() it would not work the
same way as container-supplied (child property) padding.
Conceptually set_size_request() forces the value from the subclass
(the original unadjusted request) and then we go on to adjust
the request further by adding the margin.
Use these new methods to handle set_size_request (aka aux_info)
inside gtkwidget.c, instead of having external code mess with it.
The virtual functions can be used for other purposes in the
future. For example, GtkContainer::border_width could be
automatically implemented for all container subclasses.
Now that we have a private data installed directly on
the GtkWidget instance it makes no sense to cache the size
requests on widget qdata. This change will generally make
GTK+ memory less fragmented as well as significantly speed
up the size request process.
Since we have a new mechanism for requesting sizes: GtkSizeRequestIface;
it makes no sense to maintain this cache on the GtkWidget structure...
removing the requisition cache however does not break the old "size-request"
signal which is there for backwards compatability reasons.
In any case widget->requisition should not have been accessed,
gtk_widget_get_child_requisition() would have been the correct way
to consult the cache.
This commit also deprecates the newly added gtk_widget_get_requisition()
API and makes it fallback on gtk_size_request_get_size().
These members of GtkWidgetAuxData can no longer be set after
the removal of deprecated gtk_widget_set_uposition(), now removed
these members completely and removed the access to them from
gtk_widget_size_allocate().
This recovers 10 bits, since state and saved_state as uint8 both
wasted 5 bits. Now we can add 10 more flags.
Also, a possible future patch could just do 1-bit bitfields
for the private flags instead of using manual bit twiddling.
https://bugzilla.gnome.org/show_bug.cgi?id=628884
Currently the only users of the GTK_HAS_FOCUS flag are setting it
before sending a focus change event. This is normally needed by
GtkWindow, but there are widgets that require controlling the focus
of widgets that are semantically their children even though they are
parented to another top-level. Case in point: the quick search entry
for GtkTreeView.
Over the years people have been hacking the focus change out of
gtkwindow.c and gtktreeview.c, thus leaking the direct access of the
GTK_HAS_FOCUS flag.
The simplest way to avoid that is to add a function that sends the
focus change event and controls the setting of the flag, thus removing
the need for external widgets to do the same.
https://bugzilla.gnome.org/show_bug.cgi?id=593671
Fixed GtkExtendedLayout to interact with sizegroups, "size-requsts"
and caching the values all in the same code segment.
Migrated the cache code to be internal to gtkextendedlayout.c
This commit changes gtk_extended_layout_get_desired_size() for
per dimension variants. Furthermore this commit reverts the actions
done in size-groups for now as it needs a different approach.
The natural width/height parameters added to aux_info have been changed
for a per width cache for heights and a per height cache for widths.
gtk-demo is still working, currently sizegroups are not taken
into account as mentioned above - size groups need to be alerted both
when the widths and heights are updated independantly and then that
information needs to repropagate also to other extended layout implementors.
Deprecate widget flag macros GTK_WIDGET_STATE, GTK_WIDGET_SAVED_STATE,
GTK_WIDGET_FLAGS, GTK_WIDGET_TOPLEVEL, GTK_WIDGET_NO_WINDOW and
GTK_WIDGET_COMPOSITE_CHILD.
Also deprecate the type macros GTK_WIDGET_TYPE, GTK_OBJECT_TYPE_NAME and
GTK_OBJECT_TYPE which have become redundant.
Instances of GTK_WIDGET_TOPLEVEL are replaced with gtk_widget_is_toplevel,
GTK_WIDGET_TYPE is replaced with G_OBJECT_TYPE, GTK_WIDGET_COMPOSITE_CHILD
is replaced with use of the "composite-child" property and uses of
GTK_WIDGET_NO_WINDOW are adjusted to use gtk_widget_get_has_window.
Uses of GTK_WIDGET_SAVED_STATE and GTK_WIDGET_FLAGS inside GtkWidget are
changed to direct flag usage.
Documentation is updated to refer to gtk_widget_set_has_window and
gtk_widget_get_has_window.
Gail and tests are updated as well.
Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=69872
Deprecate widget flag macros GTK_WIDGET_STATE, GTK_WIDGET_SAVED_STATE,
GTK_WIDGET_FLAGS, GTK_WIDGET_TOPLEVEL, GTK_WIDGET_NO_WINDOW and
GTK_WIDGET_COMPOSITE_CHILD.
Also deprecate the type macros GTK_WIDGET_TYPE, GTK_OBJECT_TYPE_NAME and
GTK_OBJECT_TYPE which have become redundant.
Instances of GTK_WIDGET_TOPLEVEL are replaced with gtk_widget_is_toplevel,
GTK_WIDGET_TYPE is replaced with G_OBJECT_TYPE, GTK_WIDGET_COMPOSITE_CHILD
is replaced with use of the "composite-child" property and uses of
GTK_WIDGET_NO_WINDOW are adjusted to use gtk_widget_get_has_window.
Uses of GTK_WIDGET_SAVED_STATE and GTK_WIDGET_FLAGS inside GtkWidget are
changed to direct flag usage.
Documentation is updated to refer to gtk_widget_set_has_window and
gtk_widget_get_has_window.
Gail and tests are updated as well.
Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=69872
Add gtk_widget_get_visible(). For symmetry reasons and for convenience
when a widget's visibility state is available as a boolean condition,
also add gtk_widget_set_visible() (which simply calls show()/hide()).
Add the following functions based on a patch from Christian Dywan:
- gtk_widget_set/get_can_focus()
- gtk_widget_set/get_can_default()
- gtk_widget_has_default()
- gtk_widget_has_focus() for GTK_WIDGET_HAS_FOCUS()
- gtk_widget_get_sensitive() for GTK_WIDGET_SENSITIVE()
- gtk_widget_is_sensitive() for GTK_WIDGET_IS_SENSITIVE()
gtk/gtkmenuitem.c: Override custom_tag_finished() for "accelerator" and search
the correct toplevel GtkWindow to attach accelerators to menu items.
gtk/gtkwidget.[ch]: Added _gtk_widget_buildable_finish_accelerator() to allow
subclasses to specify a toplevel window to associate with when parsing <accelerator>
tags
2008-09-02 Michael Natterer <mitch@imendio.com>
* gtk/gtkwidget.c (gtk_widget_get_allocation): removed this
function because there is massive disagreement about how to
implement it. Needs some general discussion in the next
development cycle about how our C api should evolve.
* gtk/gtk.symbols: changed accordingly.
svn path=/trunk/; revision=21259
2008-08-29 Michael Natterer <mitch@imendio.com>
* gtk/gtkwidget.h: move the gtk_widget_get_parent() and
gtk_widget_get_parent_window() prototypes together with their
respective setters.
* gtk/gtkwidget.c: move gtk_widget_get_parent_window() together
with its setter.
svn path=/trunk/; revision=21240
2008-07-31 Cody Russell <bratsche@gnome.org>
Bug 56070 – Can't click button after setting it sensitive.
* gtk/gtkwidget.[ch]
* gtk/gtkwindow.c
* gtk/gtkmain.c
* gtk/gtkbutton.c
* gtk/gtkprivate.h
* gdk/gdkevents.h: Synthesize crossing events events where necessary.
* gtk/tests/crossingevents.c: Add unit tests for crossing events.
Big thanks to Ed Catmur, Matthias Clasen, and everyone else who
has worked on and helped out with this.
svn path=/trunk/; revision=20924
2008-06-30 Cody Russell <bratsche@gnome.org>
* Practically everything changed.
Change all references of GIMP Toolkit (and variations of it)
to GTK+ Toolkit, showing no mercy at all to our beloved
ancestry. (#540529)
svn path=/trunk/; revision=20709
2008-05-28 Michael Natterer <mitch@imendio.com>
* gtk/gtk*.h: whitespace cleanup: remove trailing whitespace and
excess newlines and sprinkled some newlines where needed. Zero
code or formatting changes included.
svn path=/trunk/; revision=20225
2008-05-28 Michael Natterer <mitch@imendio.com>
* gtk/gtk.h: define __GTK_H_INSIDE__ around including all other
headers.
* gtk/gtktypebuiltins.h.template
* gtk/gtkversion.h.in
* gtk/gtk*.h: add single-include guards that #error out if
GTK_DISABLE_SINGLE_INCLUDES is defined and any of these files is
included individually.
* gtk/gtkprintbackend.h
* gtk/gtkprinter-private.h
* gtk/gtktextlayout.h
* gtk/gtktexttagprivate.h
* gtk/gtktexttypes.h
* gtk/gtktreedatalist.h: include <gtk/gtk.h> instead of individual
headers in these private or semi-private headers.
* gtk/gtkimmodule.h: also here because it's not in gtk.h.
* gtk/gtkpagesetupunixdialog.h
* gtk/gtkprinter.h
* gtk/gtkprintjob.h
* gtk/gtkprintunixdialog.h: likewise in the gtkunixprint headers.
* gtk/gtkclist.h
* gtk/gtkcombo.h
* gtk/gtkctree.h
* gtk/gtkfilesel.h
* gtk/gtkitemfactory.h
* gtk/gtklist.h
* gtk/gtklistitem.h
* gtk/gtkoldeditable.h
* gtk/gtkoptionmenu.h
* gtk/gtkpixmap.h
* gtk/gtkpreview.h
* gtk/gtksignal.h
* gtk/gtktipsquery.h: whenever possible, include only <gtk/gtk.h>
instead of individual headers in these deprecated headers. They
don't get included at all when GTK_DISABLE_DEPRECATED is defined,
so if an app needs them anyway, it must undef GTK_DISABLE_DEPRECATED
and include them individually, which should continue to work.
* gtk/gtkclist.c: include "gtkctree.h" because of the change
above.
svn path=/trunk/; revision=20221
2008-03-18 10:49:20 Tim Janik <timj@imendio.com>
* Applied pixmap redirection patch by Alexander Larsson with
various updates from:
Bug 318807 – Offscreen windows and window redirection.
Updates:
* updated docs to mention "Since 2.16".
* tests/testgtk.c: fixed snapshooting pixmap leak.
convert pixmap to pixbuf after snapshooting, to compensate for different
bit depths (occurs when snapshooting ARGB visuals and displaying the
pixmap in an RGB visual).
* gdk/gdkwindow.[hc]: made GdkWindowRedirect private.
* gdk/gdkwindow.c: removed damage idle handler, there's no aparent
need for it. enqueue damage notification as GDK_DAMAGE events
for each painting redirection at the start of the event queue.
consider windows with a redirection fully visible when invalidating,
and when updating from backing store. cleaned up stale variables.
* gdk/gdkevents.c: added _gdk_event_queue_prepend().
* gtk/gtkwidget.c: fixed coordinates for !NO_WINDOW widgets in
gtk_widget_get_snapshot; this fixes garbage snap offsets for gammacurve,
tree, drawingarea, text, handlebox, etc.
clip the redirected window hierarchy to window sizes, the visible
rectangles don't need to be taken into account here.
extended snapshooting docs to recommend gdk_pixbuf_get_from_drawable()
in case pixmap visuals could mismatch.
* gdk/x11/gdkwindow-x11.c: removed _gdk_windowing_window_get_visible_rect().
Base patch:
* tests/testgtk.c: add a "Snapshot" test to demonstrate snapshooting
of possibly obscured widgets into an offscreen pixmap.
* gtk/gtkwidget.[hc]: add GtkWidget::damage-event signal, add
gtk_widget_get_snapshot() to render a widget's contents to a GdkPixmap.
* gtk/gtkmain.c: dispatch GDK_DAMAGE events.
* gdk/gdkwindow.c: moved outer gdk_window_new() and gdk_window_reparent()
implementations here, adapted them to propagate redirects to child windows.
gdk_window_end_paint(): copy repainted window contents to redirection pixmap,
clipped to visible region. queue GDK_DAMAGE event delivery.
gdk_window_redirect_to_drawable(): install window painting redirection.
gdk_window_remove_redirection(): remove previously installed redirection.
* gdk/x11/gdkwindow-x11.c: added _gdk_windowing_window_get_visible_rect(),
renamed _gdk_window_new() and _gdk_window_reparent().
* gdk/gdkwindow.h: added GdkWindowRedirect* to GdkWindowObject, export
gdk_window_redirect_to_drawable() and gdk_window_remove_redirection().
* gdk/gdkevents.h: added GDK_DAMAGE event type.
* gdk/gdkevents.c: extract time and state from GDK_DAMAGE events.
* gdk/gdkinternals.h: added internal prototypes.
svn path=/trunk/; revision=20122
2007-06-15 Mathias Hasselmann <mathias.hasselmann@gmx.de>
* docs/reference/gtk/gtk-sections.txt, gtk/gtk.symbols,
gtk/gtkwidget.c, gtk/gtkwidget.h, tests/testtooltips.c: Introduce
convenience property "GtkWidget:tooltip-text" taking care of escaping
it for unwanted markup entities. Add functions to set tooltip text:
gtk_widget_set_tooltip_text(), gtk_widget_set_tooltip_markup(),
gtk_widget_get_tooltip_text(), gtk_widget_get_tooltip_markup().
* gtk/gtktooltip.c, gtk/gtktooltip.h: Add gtk_tooltip_set_text()
to set the tooltip text without using markup.
Patches from Emmanuele Bassi (#447643).
svn path=/trunk/; revision=18142
2007-02-06 Kristian Rietveld <kris@imendio.com>
New tooltips API.
* gtk/Makefile.am
* gtk/gtk.h
* gtk/gtk.symbols: build system foo.
* gtk/gtkmain.c (gtk_main_do_event): call tooltip event handler
hook for appropriate events.
* gtk/gtkmarshalers.list: add BOOLEAN:INT,INT,BOOLEAN,OBJECT.
* gtk/gtkrc.c: add style for gtk-tooltip.
* gtk/gtksettings.c (gtk_settings_class_init): make the
different tooltip timeouts configurable.
* gtk/gtkwidget.[ch]: add new properties, signals, make sure
tooltips are hidden on unmap, destroy, update window event
mask on realize, hook into focus change and show help
handlers.
* gtk/gtkwindow.h: move GtkWindow typdef to gtkwidget.h ...
* gtk/gtktooltip.[ch]: new files.
* tests/Makefile.am
* tests/testtooltips.c: add test application.
svn path=/trunk/; revision=17264
2006-11-16 Michael Natterer <mitch@imendio.com>
Add new infrastructure for notifications of failed keyboard
navigation and navigation with restricted set of keys.
The patch handles configurable beeping, navigating the GUI with
cursor keys only (as in phone environments), and configurable
wrap-around. Fixes bugs #322640, #70986, #318827, #334726, #334742
and #309291.
* gtk/gtksettings.c: added properties gtk-keynav-cursor-only,
gtk-keynav-wrap-around and gtk-error-bell.
* gtk/gtkwidget.[ch]: added new signal "keynav-failed" and public
API to emit it. Added New function gtk_widget_error_bell() which
looks at the gtk-error-bell setting and calls gdk_window_beep()
accordingly.
* gtk/gtk.symbols: add the new widget symbols.
* gtk/gtkcellrendereraccel.c
* gtk/gtkimcontextsimple.c
* gtk/gtkmenu.c
* gtk/gtknotebook.c: use gtk_widget_error_bell() or look at the
gtk-error-bell setting instead of calling gdk_display_beep()
unconditionally.
* gtk/gtkcombobox.c
* gtk/gtkentry.c
* gtk/gtkiconview.c
* gtk/gtklabel.c
* gtk/gtkmenushell.c
* gtk/gtkspinbutton.c
* gtk/gtktextview.c
* gtk/gtktreeview.c: call gtk_widget_error_bell() on failed keynav.
* gtk/gtkentry.c
* gtk/gtklabel.c
* gtk/gtkrange.c
* gtk/gtktextview.c: consult gtk_widget_keynav_failed() on failed
cursor navigation and leave the widget if it returns FALSE.
* gtk/gtkmenushell.c
* gtk/gtknotebook.c: only wrap around if gtk-keynav-wrap-around
is TRUE.
* gtk/gtkradiobutton.c: ask gtk_widget_keynav_failed() to decide
whether to to wrap-around, and don't select active items on cursor
navigation if gtk-keynav-cursor-only is TRUE. Should look at
gtk-keynav-wrap-around too, will look into that.
Tue Apr 25 10:25:28 2006 Søren Sandmann <sandmann@redhat.com>
* tests/testgtk.c (create_alpha_window): Create 'composited' label.
* tests/testgtk.c (on_composited_changed): New function, change
the label to say whether the screen is composited or not.
* gtk/gtkwindow.c (gtk_window_on_composited_changed): When
composited status change, invalidate the window and propagate the signal;.
* gtk/gtkwindow.c (gtk_window_map): Set the appropriate type hint
if reset_type_hint is TRUE.
* gtk/gtkwindow.c (gtk_window_set_type_hint): If hint is one of
the old hints, store a shadow copy in the public window->type_hint
bitfield, otherwise set this field to normal. Set the private
field to the type hint.
* gtk/gtkwindow.c (gtk_window_init): Initialize priv->type_hint.
* gtk/gtkwindow.c (struct _GtkWindowPrivate): New field
"reset_type_hint" indicating whether the type hint needs to be
reset. New field type_hint containing a GdkWindowTypeHint.
* gtk/gtkwidget.c (propagate_composited_changed): New function to
propagate changes in composited status.
(gtk_widget_class_init): Add composited_changed signal.
* gtk/gtkwidget.h (struct _GtkWidgetClass): New signal composited-changed.
* gtk/gtkwidget.c (gtk_widget_is_composited): New function.
* gtk/gtktooltips.c (gtk_tooltips_draw_tips): Set transient for.
* gtk/gtktooltips.c (gtk_tooltips_force_window): Set the type hint
* gtk/gtkmenuitem.c (gtk_menu_item_position_menu): Compute whether
the item belongs to a menubar. Set the type_hint appropriately
depending on the outcome.
* gtk/gtkmenu.c (gtk_menu_position): Set the default type hint here.
* gtk/gtkmenu.c (gtk_menu_attach_to_widget): connect to hierarchy
changed on the attach widget.
* gtk/gtkmenu.c (attach_widget_hierarchy_changed): New function to
set the transient_for property for menus.
* gtk/gtkdnd.c (set_icon_stock_pixbuf): Set the appropriate type hint.
* gtk/gtkcombo.c (gtk_combo_popup_list): Make the popup window
transient for the toplevel.
* gtk/gtkcombobox.c (gtk_combo_box_set_popup_widget): Set
transient-for, for the popup window.
* gdk/x11/gdkwindow-x11.c (gdk_window_get_type_hint): Support for
new window types.
* gdk/x11/gdkwindow-x11.c (gdk_window_set_type_hint): Add support
for new window types.
* gdk/x11/gdkscreen-x11.c (_gdk_x11_screen_process_owner_change):
New function called whenever the compositing manager comes and goes.
* gdk/x11/gdkscreen-x11.c (gdk_screen_is_composited): New function.
* gdk/x11/gdkscreen-x11.c
(_gdk_x11_screen_request_cm_notification, make_cm_atom,
check_is_composited): New functions
* gdk/x11/gdkevents-x11.c (gdk_event_translate): Call
_gdk_x11_screen_process_owner_change when an
XFixesSelectionNotifyEvent is received.
* gdk/x11/gdkdisplay-x11.c (gdk_display_open): Call
_gdk_x11_screen_request_cm_notification() on all screens.
* gdk/quartz/gdkscreen-quartz.c (gdk_screen_is_composited): Dummy
implementation.
* gdk/gdkscreen.c (gdk_screen_class_init): New signal,
'composited-changed'.
* gdk/gdkwindow.h: Add new EWMH window types.
* gdk/win32/gdkscreen-win32.c (gdk_screen_is_composited)
2006-02-19 Matthias Clasen <mclasen@redhat.com>
Support input shapes: (#331070)
* gdk/gdk.symbols:
* gdk/gdkdisplay.h:
* gdk/gdkwindow.h:
* gdk/x11/gdkdisplay-x11.c (gdk_display_supports_shapes)
(gdk_display_supports_input_shapes): Functions to determine
if a display supports shaped windows or input shapes.
* gdk/x11/gdkwindow-x11.c (gdk_window_input_shape_combine_region):
(gdk_window_input_shape_combine_mask):
(gdk_window_set_child_input_shapes):
(gdk_window_merge_child_input_shapes): Input shape versions
of the window shape API.
* gtk/gtk.symbols:
* gtk/gtkwidget.h:
* gtk/gtkwidget.c (gtk_widget_input_shape_combine_mask):
New function to set an input shape on a widget.
2005-07-26 Matthias Clasen <mclasen@redhat.com>
* gtk/gtkwidget.h:
* gtk/gtk.symbols: Remove G_GNUC_NULL_TERMINATED from
gtk_widget_new as well, pointed out by Kjartan Maraas.
2005-06-25 Matthias Clasen <mclasen@redhat.com>
Add a GrabBroken event to GDK, and a grab-broken-event
signal to GtkWidget. (#107320, Simon Cooke, initial patch
by John Ehresman)
* gdk/gdkevents.h: Add a GDK_GRAB_BROKEN event type,
define a GdkEventGrabBroken event struct.
* gdk/win32/gdkevents-win32.c (gdk_event_translate):
Generate GrabBroken events in response to WM_KILLFOCUS.
* gdk/x11/gdkmain-x11.c: Generate GrabBroken events
when a grab is broken by the window becoming unviewable,
or by another grab from the same client.
* gtk/gtkwidget.h (GtkWidgetClass): Add grab_broken_event.
* gtk/gtkwidget.c (gtk_widget_event_internal): Translate
GrabBroken events into grab_broken_event signals.
* gtk/gtkmain.c (gtk_main_do_event): Propagate GrabBroken
events.
* gtk/gtkmenushell.c (gtk_menu_shell_grab_broken): Deactivate
the menu when the grab is broken.
* gtk/gtkcolorsel.c (gtk_color_selection_grab_broken): Stop
the color picker if the grab is broken.
* gtk/gtkpaned.c (gtk_paned_grab_broken): Stop the drag if
the grab is broken.
Thu Feb 26 16:36:38 2004 Owen Taylor <otaylor@redhat.com>
Fixes from Torsten Schoenfeld.
* gtk/gtkwidget.c (gtk_widget_add_mnemonic_label):
Fix name in doc comment.
* gtk/gtkwidget.h: gtk_widget_list_mnemonic_labels(),
not get_mnemonic_labels.
Wed Feb 25 12:21:32 2004 Owen Taylor <otaylor@redhat.com>
* gtk/gtkwidget.[ch] gtk/gtklabel.c: Patch from
Padraig O'Briain to add gtk_widget_add/remove_mnemonic_label,
gtk_widget_get_mnemonic_labels(). (#103456)
Thu Nov 27 16:19:03 2003 Tim Janik <timj@gtk.org>
* gtk/gtkmenu.c: allow accel activation depending on sensitivity
and the attach widget.
* gtk/gtkmenuitem.c: allow accel activation depending on visibility,
sensitivity and the parent menu.
* gtk/gtkwidget.[hc]: introduced ::can-activate-accel signal which
checks whether accelerators may activate a widget. the default handler
demands the widget be sensitive and visible+viewable.
* gtk/gtkaccelgroup.[hc]: export gtk_accel_group_activate().
2003-09-21 Matthias Clasen <maclas@gmx.de>
Changes to make cross-process merging feasible:
* gtk/gtkuimanager.[hc]: Add a readonly "ui" property which holds the
merged UI definition. Remove the "changed" signal, since its role
is now filled by "notify::ui". Instead add a "actions-changed" signal
which gets emitted when the set of actions changes.
* gtk/gtktoggleactionprivate.h:
* gtk/gtktoggleaction.[hc] (gtk_toggle_action_[sg]et_draw_as_radio):
Add a "draw_as_radio" property to toggle actions so that they can be
used as proxies for radio actions much like the "draw_as_radio"
property on check menu items enables them to operate as proxies for
radio actions.
Prevent the "show_all" trap for action-based menus (see
http://mail.gnome.org/archives/gtk-devel-list/2003-September/
msg00260.html):
* gtk/gtkmenu.c (gtk_menu_{hide,show}_all): Remove g_return_if_fail()
calls from static functions.
* gtk/gtkuimanager.c (update_node):
* gtk/gtkaction.c (connect_proxy): Set "no_show_all" on constructed
widgets whose visibility is externally controlled.
* gtk/gtkwidget.[hc] (gtk_widget_[gs]et_no_show_all): Add a boolean
"no_show_all" property with setter and getter. When TRUE, it keeps
gtk_widget_{hide,show}_all() from modifying the visibility of the
widget and its children.
Mon Aug 11 11:10:07 2003 Owen Taylor <otaylor@redhat.com>
* gtk/gtkwidget.h: Mark parent public as well; it's
extensively accessed in existing code, so there is
no advantage in making people use get_parent().
(Tweak to #119463 fix)
Sun Nov 10 21:29:03 2002 Soeren Sandmann <sandmann@daimi.au.dk>
* gtk/gtkcheckbutton.c (gtk_real_check_button_draw_indicator):
* gtk/gtkradiobutton.c (gtk_radio_button_draw_indicator)
Make sure check and option marks are drawn insensitive when the
widgets are insensitive.
(#92548, patch from Tim Evans)
Sun Nov 10 21:25:04 2002 Soeren Sandmann <sandmann@daimi.au.dk>
* gtk/gtkwidget.h (struct _GtkWidgetClass): Remove _gtk_reserved8
to restore binary compatibility.
Thu Nov 7 12:53:08 2002 Owen Taylor <otaylor@redhat.com>
* gtk/gtkwidget.[ch] gtk/gtkwindow.c gtk/gtkinvisible.c:
Add ::screen-changed signal.
* gtk/gtkfontsel.c gtk/gtktoolbar.c: Use ::screen-changed
signal to simplify logic.
* configure.in: Bump version to 2.1.0, binary, interface age 0.
* gtk/gtkcontainer.c (gtk_container_class_list_child_properties):
(gtk_container_class_find_child_property): Document.
* gtk/gtkwidget.c:
* gtk/gtkwidget.h: New functions gtk_widget_class_list_child_properties
and gtk_widget_class_find_child_property. (#80652)
Mon Apr 29 18:28:00 2002 Owen Taylor <otaylor@redhat.com>
Integrate Erwann Chenede's multihead changes for the gtk/ directory.
* gtk/gtkclipboard.[ch]: Add gtk_clipboard_get_for_display(),
make internals multihead aware.
* gtk/gtkcolorsel.[ch]: Add
gtk_color_selection_set_change_palette_with_screen_hook () [ugh!]
make up for non-multihead safety of
gtk_color_selection_set_change_palette_hook()
* gtk/gtkinvisible.[ch] gtk/gtkmenu.[ch] gtkwindow.[ch]: Add
gtk_{invisible,menu,window}_set_screen(); add "screen" properties
for GtkWindow and GtkMenu.
* gtk/gtkplug.[ch]: Add gtk_plug_construct_for_display(),
gtk_plug_new_for_display(). Multihead fixes.
* gtk/gtkselection.[ch]: Add gtk_selection_owner_set_for_display(),
make internals multihead aware.
* gtk/gtksettings.[ch]: Add gtk_settings_get_for_screen(), get
rid of now-useless gtk_settings_constructor().
* gtk/gtkstyle.[ch]: Add gtk_style_get_font_for_display(), fix
check/radio button indicators bitmap handling to be multihead
safe.
* gtk/gtkwidget.[ch]: Add gtk_widget_get_screen(), gtk_widget_has_screen(),
gtk_widget_get_display(), gtk_widget_get_clipboard(),
gtk_widget_get_root_window().
* gtk/gtkbindings.c gtk/gtkbutton.c gtk/gtkclist.c gtk/gtkcombo.c
gtk/gtkctree.c gtk/gtkdnd.c gtk/gtkfilesel.c gtk/gtkgamma.c
gtk/gtkhandlebox.c gtk/gtkhsv.c gtk/gtkimcontext.c gtk/gtklabel.c
gtk/gtklist.c gtk/gtkmain.c gtk/gtkmenuitem.c gtk/gtkmenushell.c
gtk/gtknotebook.c gtk/gtkoldeditable.c gtk/gtkoptionmenu.c
gtk/gtkpaned.c gtk/gtkpreview.c gtk/gtksocket.c gtk/gtktext.c
gtk/gtktextbuffer.c gtk/gtktextview.c gtk/gtktipsquery.c
gtk/gtktooltips.c gtk/gtktreeview.c gtk/gtktreeviewcolumn.c:
misc mechanical multihead-safety fixes.
* gtk/gtkclipboard.c: Use a GtkImage rather than a pixmap for
the dropper, look up the color palette only at realization time,
other multihead fixes.
* gtk/gtkcombo.c (gtk_combo_unrealize): Popdown the list when
unrealizing.
* gtk/gtkentry.c: Only claim ownership of the primary selection
when realized, misc multihead fixes.
* gtk/gtkfontsel.c: Only fill in fonts when attached to a screen,
fix gtk_font_selection_get_font() for multihead.
* gtk/gtkgc.c: make the depth => drawable hash per-screen.
* gtk/gtkinvisible.c: Add a constructor that realizes the
widget, so we get a realized widget with g_object_new() as
well gtk_invisible_new() as before.
* gtk/gtkmain.c: Get rid of unused gtk_visual/gtk_colormap
variables.
* gtk/gtktextdisplay.c: Add warnings if stipple bitmaps
are used on the wrong screen.
* gtk/gtktoolbar.c: Make handling of GtkSettings-based layout
read properties and connect to settings when the screen is changed,
rather than on init/finalize.
* gtk/gtkwindow.c: Fix icon handing to be multihead safe ...
default icon pixmaps/mask are only shared between windows on the
same screen. Misc multihead fixes.
Sat Apr 27 13:49:53 2002 Owen Taylor <otaylor@redhat.com>
* gtk/gtkclipboard.c (gtk_clipboard_get_for_display):
Update docs to reference GDK_SELECTION_CLIPBOARD rather GDK_NONE.
2002-04-29 Alex Larsson <alexl@redhat.com>
* gdk/linux-fb/gdkproperty-fb.c (gdk_property_get):
Fix silly bug, noticed by Sven Neumann.
Sun Apr 28 22:43:55 2002 Jonathan Blandford <jrb@gnome.org>
* gtk/gtktreemodelsort.c (gtk_tree_model_sort_set_sort_func): Fix
so that you can set a new sort func.
Sat Mar 2 13:26:58 2002 Owen Taylor <otaylor@redhat.com>
* gtk/Makefile.am: Switch style of stamp file usage.
* gtk/Makefile.am gtk/typeutils.[ch]: Switch all the exported
enumeration/fags TYPE variables over to macros for get_type() functions,
for lazy definition and to get rid of expensive relocations.
* gtk/gtkiconfactory.[ch] gtk/gtkselection.[ch] gtk/gtkstyle.[ch]
gtk/gtktextiter.[ch] gtk/gtktexttag.[ch] gtk/gtktreemodel.[ch]
gtk/gtktypeutils.[ch] gtk/gtkwidget.[ch]: Switch boxed type
definitions over manually coded get_type() functions.
* gtk/gtk.def: Updates for above
* gtk/{genmarshal.pl,makeenums.awk,makeenums.h,maketypes.awk}:
Remove from CVS, no longer used.
* configure.in: Remove checks for awk.
Sat Feb 23 11:54:12 2002 Owen Taylor <otaylor@redhat.com>
* gtk/*.h gdk/*.h: Massive padding addition to class structures.
* gtk/gtktextmark.h: Fix a FIXME about G_CONST_RETURN.
* gtk/gtkwidget.[ch]:
Change show_help signal to return gboolean instead of void. This
allows the keypress which invokes the signal to be propagated to the
focus widgets ancestors if not handled by the focus widget.
* gtk/gtktoolips.[ch]
Change _gtk_tooltips_show_tip () to return a gboolean indicating
whether widget has tooltip to display.
