If a motion event is sent twice in a row for the same pointer position
around `SNAP_DISTANCE` (this can happen if the pointer moves slowly),
the computation returns a snap position once, and `SNAP_POSITION_NONE`
the other time, because the panel has lost a pixel in between. This
makes the panel blink or bounce against the edge of the screen. Easier
to reproduce on Wayland.

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

The `scale` argument was only added in 4.17.4, so better not to
encourage the use of this function before.

Related: !83, 0a732bdc

See discussion in libxfce4ui!84 and linked issues for the rationale.

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

Fixes: 5ec58536

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

Not really a regression, since it never worked.

Fixes: 4f6e4031

Closes: #676
Fixes: 4f6e4031

The font specified via the font dialog can be applied globally while
giving priority to custom font formats, as long as it is applied at the
end and without mixing markup strings and Pango attributes, as the doc
recommends. This means not applying the dialog font and the custom
format separately, but all at once, so some refactoring.

Fixes: #675
Related: !101

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

455 translated messages, 34 untranslated messages.

Transifex (https://explore.transifex.com/xfce/).

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

489 translated messages.

Transifex (https://explore.transifex.com/xfce/).

488 translated messages, 1 untranslated message.

Transifex (https://explore.transifex.com/xfce/).

Avoid iterating the main loop by hand. This is bad practice that may
change the order in which things should normally happen and lead to bad
surprises.

For popup_menu() use g_idle_add() instead. For position_widget(), just
delete this code since it was broken before and probably never called,
and put a hint in the doc instead.

Fixes: 7d0976db, 42b6032e

Mainly useful for popup commands, but consistent with position_widget().

This reverts commit ed56fbb1.

Fixed directly in xfce_panel_plugin_popup_menu() in the next commit
instead.

It is enough to purge the current events once to show the panel, and the
use of `gdk_window_get_position()` was wrong and in the wrong place.

This covers corner cases, for example when a menu is opened when the
panel is closed.

By popping up menu at widget also when the panel is floating if
possible.

Related: !80, 7a24ea0c

Seems to have always been dead code, at least since 2dc06568.