If the wl_surface resource happens to be destroyed before any other
role resource, the destructor for the latter will attempt to
access/modify random memory.
Fix this by ensuring the associated resources are destroyed on the
wl_surface destructor, this will free all associated memory and
remove the resources ahead of their imminent destruction.
https://bugzilla.gnome.org/show_bug.cgi?id=745734
In 3.16, GDM keeps a login screen running on vt1.
This login screen starts an Xwayland instance.
Since it's the first X server to start, it gets
the prized :0 display number.
This commit works around that problem, for now,
by having GDM's display number start at 1024.
https://bugzilla.gnome.org/show_bug.cgi?id=746295
With server-side buffer allocation, buffers may be returned out of order
(e.g. they may be held onto by external references or hardware). As such
we may see older buffers the frame after we discard the history from
seeing a very young buffer. To overcome this we want to keep the history
in a ring so we can keep track of older entries without keeping an
unbounded list. After converting to a ring, the maximum buffer age
observed during testing was 5 (expected value of 4), but before we could
see ages as high as 9 due to the huge latency spikes caused by doing full
buffer redraws (compounded by external listeners doing readback on the
damaged areas, for example vnc, drm/udl, prime). For this reason, a
maximum age of 16 was chosen to be suitably large enough to prevent these
worst cases from taxing the system.
v2: Fix off-by-one in combining the damage histroy into the clipping
rectangle, and apply copious whitespace fixes.
Bugzilla: https://bugzilla.gnome.org/show_bug.cgi?id=745512
References: https://bugzilla.gnome.org/show_bug.cgi?id=724788
References: https://bugzilla.gnome.org/show_bug.cgi?id=669122
cogl provides an interface to pass along damage with the swap buffers
request. This is useful for the display servers and hardware to minimise
the work done in updating the screen and also reducing the work done by
external listeners (such as vnc, drm/udl and PRIME).
Bugzilla: https://bugzilla.gnome.org/show_bug.cgi?id=745512
If the rectangle is allocate a size smaller than the border, drawing the
border will end up with negative coordinates, and will mess up the whole
thing. Since rectangles don't have a minimum preferred size, we cannot
rely on the allocation being big enough to contain the border and the
background color.
If the rectangle is smaller than the border width value, we just paint
the border color as well.
With all input events being handled through clutter, this only confuses
things, and most nominally, coerces touch events through places we didn't
intend to, like the window frame.
This makes again all touch events only handled in the passive grab on X11,
while the rest stays pointer (emulated) only.
https://bugzilla.gnome.org/show_bug.cgi?id=745335
On startup, the cursor is kept hidden if there's any touchscreen available.
If the device that was last interacted is removed, we check on available
pointing devices though, so we don't possibly hide the pointer if there are
further mice/touchpads/etc.
Devices being added don't update cursor visibility, we wait for the user
interacting with those instead.
https://bugzilla.gnome.org/show_bug.cgi?id=712775
On X11, calling this function on meta_display_handle_events() will not catch
mouse events happening over clients, so poke directly in the backend for
XI_DeviceChanged events, which mutter will get on device switches.
The code has been slightly refactored so we deal with XIEvents at a single
handle_input_event() function.
https://bugzilla.gnome.org/show_bug.cgi?id=712775
This function can be used to trigger changes depending on the device type
that is currently emitting the events. So far, it is used to switch cursor
visibility on/off on touchscreen interaction.
A "last-device-updated" signal has also been added, in order allow hooking
other behavior changes (eg. OSK) when the last device changes.
https://bugzilla.gnome.org/show_bug.cgi?id=712775
Since commit 6e06648f7, we start out with the invisible frame parts
only, and then add the unconstrained rect's height (which consists of
the visible parts of both frame and client window) *unless* the window
is shaded. While we indeed don't want to add the client height in that
case, we need to explicitly include the visible frame parts now.
https://bugzilla.gnome.org/show_bug.cgi?id=746145
There is no good reason to do so, besides a nice way to check whether
a particular button is enabled. However there are legitimate reasons
for overdrawing like box-shadows or outlines, so remove the clip.
The initial pointer position is set by clutter. At the moment it
is the point 16x16 on the screen. But this point is not always
in the visible area on monitors (the monotors can be arranged in
many different ways).
https://bugzilla.gnome.org/show_bug.cgi?id=745752
Otherwise the pointer might be "lost" outside the visible area. Note
that the constraining code only ensures the pointer doesn't leave the
visible area but if the pointer is already outside because the rug was
pulled under it then it doesn't do anything.
https://bugzilla.gnome.org/show_bug.cgi?id=745121
