mirror of
https://github.com/brl/mutter.git
synced 2024-11-21 15:40:41 -05:00
55 lines
2.7 KiB
Plaintext
55 lines
2.7 KiB
Plaintext
How updates happen for struts, workareas, and screen/xinerama regions/edges:
|
|
One of three things causes meta_window_update_struts to be called
|
|
(a) initial window map (window.c:meta_window_new_with_attrs())
|
|
(b) update of _net_wm_strut* properties (window.c:process_property_notify())
|
|
(c) screen resizes (e.g. via xrandr; from screen.c:meta_screen_resize_func())
|
|
meta_window_update_struts (MetaWindow *window)
|
|
- Gets new list of struts from window properties
|
|
- Makes sure window doesn't single-handedly fill the screen
|
|
- records new struts if different and calls invalidate_work_areas()
|
|
invalidate_work_areas ()
|
|
- Calls meta_workspace_invalidate_work_area() for each workspace it's on
|
|
meta_workspace_invalidate_work_area()
|
|
- Cleans out all strut lists
|
|
- queues all windows for resizing
|
|
- Calls meta_screen_queue_workarea_recalc (workspace->screen);
|
|
meta_screen_queue_workarea_recalc()
|
|
- Adds set_work_area_idle_func() as an idle handler
|
|
|
|
set_work_area_idle_func()
|
|
- Calls set_work_area_hint()
|
|
set_work_area_hint()
|
|
- Calls meta_workspace_get_work_area_all_xineramas()
|
|
- Sets _NET_WORKAREA property
|
|
meta_workspace_get_work_area_all_xineramas()
|
|
- Calls ensure_work_areas_validated()
|
|
ensure_work_areas_validated()
|
|
- Loops over xineramas
|
|
- Loops over windows, then struts:
|
|
- Adds struts to list first time through xinerama loop
|
|
- Find the amount of the strut on the given xinerama for <dir>_strut
|
|
- Just max the amount of the strut with the all_<dir>_strut
|
|
- Makes sure there's a non-empty xinerama workarea
|
|
- Record the xinerama workarea
|
|
- Make sure there's a non-empty screen workarea
|
|
- Record the screen workarea
|
|
- Cache the spanning rects for the screen and xinerama regions
|
|
- Cache the screen and xinerama edges
|
|
|
|
Alternatively to all the above, if the idle function for the screen
|
|
has not yet fired, constraints.c:setup_constraint_info() can call
|
|
either workspace.c:meta_workspace_get_onscreen_region() or
|
|
workspace.c:meta_workspace_get_onxinerama_region() which in turn
|
|
call workspace.c:ensure_work_areas_validated().
|
|
|
|
Meaning of related functions that might be difficult to tell apart:
|
|
screen.c:meta_screen_get_current_xinerama ()
|
|
- Finds out which xinerama the mouse is on with an XQueryPointer
|
|
window.c:meta_window_get_work_area_current_xinerama()
|
|
window.c:meta_window_get_work_area_for_xinerama()
|
|
window.c:meta_window_get_work_area_all_xineramas ()
|
|
- All three are for finding the intersection of workareas across
|
|
multiple workspaces so that placement of windows can be
|
|
determined in such a way that they remain in the workarea for
|
|
all workspaces that they are on.
|