Currently, gtk_event_controller_scroll_handle_event() always returns
TRUE if it is handled, which stops the propagation of the event. If
there’s a single GtkEventControllerScroll in the widget hierarchy, that
means that no others will run, depending on the propagation phase. In
Nautilus, this can be observed when adding a scroll controller to the
GtkScrolledWindow (ctrl-scrolling controls the zoom level) - either the
scrolling or the zooming breaks.
Fixes https://gitlab.gnome.org/GNOME/gtk/issues/45
The last round of patches to get the desired direction of value move in
response to scrolls/keypresses on scales had the inadvertent side effect
of giving the opposite direction on scrollbars. Seeing as gtkrange.c is
already a collection of hacks, add another so that fix only holds if the
instance is a GtkScale, since that is what those patches were aimed at.
Close https://gitlab.gnome.org/GNOME/gtk/issues/1065
This will be used in subsequent commits to fix the sign by which the
value is changed in response to directional scroll or keypress events.
The idea is: you have a movement to make – in the form of a delta that
follows widget directions, i.e. −1 means left or up, +1 means right or
down – and you want to know whether that delta needs to be inverted in
order to produce the intuitively expected directional change of :value.
The existing should_invert() is not sufficient: it just determines
whether to invert visually, but we need more nuance than that for input.
To answer that – while not doubling up the work for scrolls and keys – I
add a helper should_invert_move(), which considers other relevant state:
• A parallel movement on priv->orientation should just use the existing
should_invert(), which already worked OK for this case (not others).
• Movements on the other orientation now depend on priv->orientation:
◦ For a horizontal Range, always invert, so up (i.e. −ve in terms of
widget coords) always means increase value & vice-versa. This was
done in get_wheel_delta(), but move it here for use with keys too.
◦ For a vertical Range, ignore :invert as it’s only relevant to the
parallel orientation. Do not care about text direction here either
as RTL locales do not invert number lines, Cartesian plots, etc.
This returns TRUE if the delta should be inverted before applying to the
value, and we can now use this function in both scroll and key handlers.
https://bugzilla.gnome.org/show_bug.cgi?id=407242https://bugzilla.gnome.org/show_bug.cgi?id=791802
This is an automated change doing these command:
git sed -f g gtk_widget_set_has_window gtk_widget_set_has_surface
git sed -f g gtk_widget_get_has_window gtk_widget_get_has_surface
git sed -f g gtk_widget_set_parent_window gtk_widget_set_parent_surface
git sed -f g gtk_widget_get_parent_window gtk_widget_get_parent_surface
git sed -f g gtk_widget_set_window gtk_widget_set_surface
git sed -f g gtk_widget_get_window gtk_widget_get_surface
git sed -f g gtk_widget_register_window gtk_widget_register_surface
git sed -f g gtk_widget_unregister_window gtk_widget_unregister_surface
git checkout NEWS*
The given coordinate needs to be trough-relative, since that's what the
slider is relative to. Also use the trough's content size and not the
outer size.
Remove all the old 2.x and 3.x version annotations.
GTK+ 4 is a new start, and from the perspective of a
GTK+ 4 developer all these APIs have been around since
the beginning.
The main GDK thread lock is not portable and deprecated.
The only reason why gdk_threads_add_timeout() and
gdk_threads_add_timeout_full() exist is to allow invoking a callback
with the GDK lock held, in case 3rd party libraries still use the
deprecated gdk_threads_enter()/gdk_threads_leave() API.
Since we're removing the GDK lock, and we're releasing a new major API,
such code cannot exist any more; this means we can use the GLib API for
installing timeout callbacks.
https://bugzilla.gnome.org/show_bug.cgi?id=793124
The trough widgets have the slider on top of the fill level and the
hilight widget. Make sure the widget stacking respects that.
This is particularly relevant because picking event targets should pick
the slider and not the hilight widget.
Bug 737175 aimed to ensure that scrolling up on a horizontal range would
result in its value increasing, as that’s what users intuitively expect.
However, its commit 416c370da1 meant that,
if the event gives scroll deltas, we inverted our delta unconditionally.
So it broke horizontal scrolling: scrolling left moved the slider right…
We must only invert if using dy as delta. dx already has the right sign,
so inverting it was wrong.
https://bugzilla.gnome.org/show_bug.cgi?id=788905
It does not hurt us to keep middle clicks doing the same
as shift-primary clicks. This makes the transition from gtk2
less painful in terms of muscle memory.
https://bugzilla.gnome.org/show_bug.cgi?id=787669
This patch makes that work using 1 of 2 options:
1. Add all missing enums to the switch statement
or
2. Cast the switch argument to a uint to avoid having to do that (mostly
for GdkEventType).
I even found a bug while doing that: clearing a GtkImage with a surface
did not notify thae surface property.
The reason for enabling this flag even though it is tedious at times is
that it is very useful when adding values to an enum, because it makes
GTK immediately warn about all the switch statements where this enum is
relevant.
And I expect changes to enums to be frequent during the GTK4 development
cycle.
Since setting a clip is mandatory for almost all widgets, we can as well
change the size-allocate signature to include a out_clip parameter, just
like GtkCssGadget did. And since we now always propagate baselines, we
might as well pass that one on to size-allocate.
This way we can also make sure to transform the clip returned from
size-allocate to parent-coordinates, i.e. the same coordinate space
priv->allocation is in.
We now rely on toplevels receiving and forwarding all the events
the windowing should be able to handle. Event masks are no longer a
way to determine whether an event is deliverable ot a widget.
Events will always be delivered in the three captured/target/bubbled
phases, widgets can now just attach GtkEventControllers and let those
handle the events.
Add a new ::measure vfunc similar to GtkCssGadget's that widget
implementations have to override instead of the old get_preferred_width,
get_preferred_height, get_preferred_width_for_height,
get_preferred_height_for_width and
get_preferred_height_and_baseline_for_width.
We only keep one align flag per child, so it seems odd to
keep separate h/v expand flags. Just keep one expand flag
and interpret it according to orientation. Allow setting
the expand flag for child widgets too, though, so we can
make widget expand without interfering with the recursive
widget expand flag.
Update all callers.
Use the new possibility of expanding child widgets to make
the label of check and radio buttons expand. This fixes
unexpected behavior of these widgets in RTL in some places.
https://bugzilla.gnome.org/show_bug.cgi?id=765742
Since we are really only interested in the center point of the
slider allocation, the pre-computed slider geometry is perfectly
fine, just use it always. This avoids the complication with
gadget visibility.
