priv->is_switch is used to get hint if the gesture happened
on the switch. On touch devices, ::enter-notify-event may
not be emitted, and so priv->is_switch may not be set.
Let it be set when ::pressed gesture is emitted so that
the switch is toggled when the gesture occurs regardless
of whether a pointing device is present or not.
We don't need to cover every case with a va_marshaller, but there are a
number of them that are useful because they will often only be connected
to by a single signal handler.
Generally speaking, if I opened into a file to add a va_marshaller, I just
set all of them.
Now that we've switched the on and off states to gadgets, we need to
ensure that the widget's clip take into account the clip of every
gadget.
Fixes#1631
While the IEC power symbols have been part of Unicode since version 9.0,
released in 2016, not every font supports them.
We can use the old symbols as a fallback, as they seem to have the
better coverage, if not the best appearance.
It was used to mark css properties that affect widgets with text, but it
caused unnecessary invalidations. E.g. 'color' was marked as
AFFECTS_TEXT but changing just the color of a label should not
automatically queue a resize, which is what the code in
gtk_widget_real_style_updated does.
Replace this flag with GTK_CSS_AFFECTS_TEXT_SIZE and
GTK_CSS_AFFECTS_TEXT_CLIP, which GtkWidget can use only if the widget
actually has text.
https://bugzilla.gnome.org/show_bug.cgi?id=791281
Instead of creating 2 pango layouts in every draw() and on in
_get_content_size (and calling into gettext twice in both cases), just
keep the layouts around and create them in only one place.
CSS min-width and min-height on the slider node fit this
perfectly. We still fall back to the slider-width and
slider-height style properties if the CSS properties are
not set.
Instead of having old and new style, now have a GtkCssStyleChange opaque
object that will compute the changes you are interested in for you.
This simplifies change signal handlers quite a bit and avoids lots of
repeated computation in every signal handler.
This file now uses round(), which was not available until C99, so include
fallback-c89.c instead of math.h, which includes math.h and does a fallback
implementation of round().
Make that variable go from 0.0 to 1.0 where 0.0 means inactive (slider
is on the left) and 1.0 means active (slider is on the right).
The math is simpler that way and most importantly the value is
independent of size.
handle_x always corresponds to the visible position of the handle,
which is where we want to start the animation. Without this, repeated
keyboard activation will not always animate.
Since we are storing positions here that depend on the allocation,
we need to update them in size-allocate. This fixes incorrect
positioning of the handle if the switch is active initially.
https://bugzilla.gnome.org/show_bug.cgi?id=734213
