Set delta_x or delta_y for GdkScrollEvent.
HIWORD (wParam) in WM_MOUSE(H)WHEEL is the scroll delta.
A delta value of WHEEL_DELTA (which is 120) means scrolling
one full unit of something (for example, a line).
The delta should also be multiplied by the value that the
SystemParametersInfo (SPI_GETWHEELSCROLL(LINES|CHARS), 0, &value, 0)
call gives back, unless it gives back 0xffffffff, in which case
it indicates that scrolling is page- or screen-based, not line-based
(GDK doesn't support that at the moment).
Also, all deltas should be inverted, since MS sends negative deltas
when scrolling down (rotating the wheel back, in the direction of
the user).
With deltas set the mode should be set to GDK_SCROLL_SMOOTH.
Fixes issue 1263.
The intention of this check was to skip the keyword
test if no c++ compiler is found. But the meson
docs say that add_languages() will abort unless we
pass required: false.
because filesystem readdir order is indeterministic.
Without this patch, building openSUSE's balsa package
had variations between builds in /usr/share/balsa/icon-theme.cache
When calling PickColor on org.gnome.Shell, we get back an "a{sv}", which
GDBus provides to us as "(a{sv})".
At the minute we're not unpacking this tuple, and so picking fails with
messages like:
GLib-CRITICAL **: 13:38:19.439: g_variant_lookup_value: assertion 'g_variant_is_of_type (dictionary, G_VARIANT_TYPE ("a{s*}")) || g_variant_is_of_type (dictionary, G_VARIANT_TYPE ("a{o*}"))' failed
Gtk-WARNING **: 13:38:19.439: Picking color failed: No color received
Let's unpack it.
The additional assignment to the old result variable just adds an
indirection even though we know the point where we assign it in all
cases. Just pass the values out and return in those cases instead.
Previously, GtkBin was only snapshot'ing its one and only child, but
nowadays it doesn't implement snapshot at all and the default
implementation in GtkWidget just snapshots all child widgets, which is
exactly what the implementation in gtkmodelbutton.c was doing.
Since the original implementation was likely based on GTK+ 3, the change
in default visibility might have not been considered, which results in
all rows suddenly sporting a visible spinner when opening a fresh file
chooser.
Unparenting a GtkListBoxRow can drop its last reference, which
will free its memory. Right after unparenting, though, we were
accessing the row's iter - which assumes that the row is still
alive. This causes a crash when, for example, binding two or
more models to the listbox.
Fix that by storing the iter in a variable, and not trying to
access it after unparenting. After unparenting, the variables
that are potentially garbage were explicitly assigned NULL for
clarity.
Fixes https://gitlab.gnome.org/GNOME/gtk/issues/1258
