Currently, the way to destroy a window in a response to an event (e.g.
button click), is to put a task into the deferred list with
display_defer(). The task will then call window_destroy() from outside
event handling code.
As events are handled, it is possible that the deferred list contains
also the redraw task for this window. As the execution order of these
tasks is unknown (redrawing a freed window is a bug) and redrawing
something that goes away immediately is not useful, the redraw task must
be removed on window_destroy().
'struct input' contains pointers to windows currently in focus for that
input device. These pointers must also be cleared on window_destroy().
This fixes a use-after-free bug for the unlock dialog in desktop-shell
(future commit).
As an irrelevant minor cleanup, window::grab_device member is not used
anywhere, and is removed.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Add protocol and functions for supporting screen locking, triggered by
activity timeout.
After activity timeout, compositor starts the fade to black, and then
enters SLEEPING state. At that point it calls lock() in the shell
plugin.
When input events trigger a wakeup, unlock() in the shell plugin is
called. This sends prepare_lock_surface event to the desktop-shell
client. The screen stays locked while the compositor starts fade-in.
At this point, desktop-shell client usually creates a surface for the
unlocking GUI (e.g. a password prompt), and sends it with the
set_lock_surface request. The compositor supposedly shows and allows
interaction only with the given lock surface (not yet implemented).
When desktop-shell has authenticated the user, or instead of issuing
set_lock_surface, it sends the unlock request. Upon receiving the unlock
request, the shell plugin unlocks the screen.
If desktop-shell client dies, the screen is unlocked automatically.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Add a helper function, that constructs a path to a config file from
XDG_CONFIG_HOME environment variable, by the rules of
http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
Make desktop-shell find its config file from XDG_CONFIG_HOME. This
allows to have a personal config file without continuously fighting with
git about wayland-desktop-shell.ini.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Fork and exec desktop-shell in the compositor. This is a way to create
an authenticated client. Later, the desktop-shell interface will be
reserved for this client only.
For exec to work, the compositor should be started from the
wayland-demos' root directory.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Pekka Paalanen
Kristian Høgsberg
Casey Dahlin
Rob Bradford
Eugeni Dodonov
Benjamin Franzke
Tiago Vignatti