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.
In order to make tooltip positioning portable, make use of the
move_to_rect API. Some semantical changes are made, as identical
semantics cannot be implemented using the move-to-rect API.
Primarily the implemented semantics are:
Position the tooltip in the center pixels slightly below (defaults to 4
units below) the tooltipped widget. This is always the case for keyboard
driven tooltips; the case where it tries to avoid the pointer cursor is
not implemented.
For pointer position triggered tooltips, implement the following
additional semantics:
Use the current cursor size to determine the padding used to enlarge the
anchor rectangle. This is to try to avoid the cursor overlapping the
tooltip.
If the anchor rectangle is too tall (meaning if we'd be constrained
and flip on the Y axis, it'd flip too far away from the originally
intended position), rely only on the pointer position to position the
tooltip. The approximate pointer cursor rectangle is used as a anchor
rectangle. Ideally we should use the actual pointer cursor rectangle
(image used as well as hotspot coordinate), but we don't have API to
get that information.
If the anchor rectangle isn't to tall, just make sure the tooltip isn't
too far away from the pointer position on the X axis.
Closes: #134Closes: #432Closes: #574Closes: #579Closes: #878
Let's just use the fact that a window was mapped as a subsurface to
remap it above another transient parent instead of relying on the more
complicated 'should-map-as-subsurface' helper function.
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.
If we detect HarfBuzz and PangoFT2, GtkFontChooserWidget uses them. So
we need to add CFLAGS and LIBS of them to GTK_DEP_CFLAGS/LIBS. If we
don't add them, MinGW build fails to link.
CSD titlebar are included in the focus-chain. The logic used makes sure that the
initial focus avoids the titlebar, but tabbing around will eventually get there.
This logic fails in case the window has no other focusable widgets apart from
the ones in the header-bar. If this happens keynav focus will be lost. To handle
the above scenario, we need to fallback to focus the header-bar (if any).
Fixes: https://gitlab.gnome.org/GNOME/gnome-software/issues/404
