Resizing a window in Wayland caused cursor motion events in the window
which could be seen as buttons flashing when the cursor was detected
as hovering over buttons.
This was caused by two bugs:
- Missing checks for failure to access the cursor location before
converting the coordinates from GHOST to screen-space meant the
wmWindow::eventstate location would move each time the location
was updated.
- Resizing the window wasn't detecting state changes and would
continuously send window activation events. Window activation set
wmWindpw::addmousemove which triggered the previous bug, making the
cursor flicker during resize.
This commit only addresses the first issue, where failure to access
the cursor location wasn't accounted for
(window activation will be fixed separately).
All GHOST_GetCursorPosition & wm_cursor_position_get calls now account
for failure, resolving uninitialized stack memory use in some cases.
This resolves similar issues for macOS, WIN32 & X11 although it seems
likely these platforms rarely fail to access the cursor location.
35edcf2ed6