Commit Graph

3070 Commits

Author SHA1 Message Date
Giovanni Campagna
7360aece74 wayland: don't require Clutter backend variables to be set from outside
When running under mutter-launch, we can assume we're running on
bare metal, and set the clutter backend appropriately.

https://bugzilla.gnome.org/show_bug.cgi?id=706421
2013-09-11 16:01:09 +02:00
Giovanni Campagna
b5f3238f6f Stop messing with process groups
We can be launched by gnome-session now, which implies gdb must be
attached from outside, and the Ctrl-C problem is gone.

https://bugzilla.gnome.org/show_bug.cgi?id=706421
2013-09-11 16:01:09 +02:00
Giovanni Campagna
227fb56103 Set DISPLAY and WAYLAND_DISPLAY for dbus activated services and for autostarted apps
Call the appropriate method on gnome-session so that autostarted
and bus activated apps see the X server and wayland socket.

https://bugzilla.gnome.org/show_bug.cgi?id=706421
2013-09-11 16:01:09 +02:00
Giovanni Campagna
5ae52473c9 Don't translate debug logs and warnings
Warnings that are going to the journal should be not translated:
they're not user visible, and translating them would just make
bug reporting harder (as now the developers need to understand
what the warning is saying)

https://bugzilla.gnome.org/show_bug.cgi?id=707897
2013-09-11 16:01:09 +02:00
Giovanni Campagna
7b537d6b8f Fix regression in mutter-wayland translations
Switching meta/util.h to gi18n.h was wrong, mutter is a library
and needs gi18n-lib.h, but that cannot be included from a public
header (since it depends on config.h or command line options),
so split util.h into a public and a private part.

https://bugzilla.gnome.org/show_bug.cgi?id=707897
2013-09-11 16:01:07 +02:00
Giovanni Campagna
4494888b82 Add an option to run as a wayland compositor
Move the option from the mutter binary to libmutter, and
rename from --nested to --wayland.
This allows gnome-shell to drop the set_is_wayland_compositor()
call.

https://bugzilla.gnome.org/show_bug.cgi?id=707897
2013-09-11 16:00:47 +02:00
Giovanni Campagna
004ee2d3b5 MetaPluginManager: don't require plugins to pass events to clutter
We don't want the shell to know if it's running on ClutterX11 or
not, so we should forward the event ourselves.

https://bugzilla.gnome.org/show_bug.cgi?id=707482
2013-09-10 17:26:15 +02:00
Giovanni Campagna
168ea64a45 wayland: use symbolic constants for interface version
Replace magic numbers scattered around the code with proper
macros collected in one header file.

https://bugzilla.gnome.org/show_bug.cgi?id=707851
2013-09-10 15:55:11 +02:00
Giovanni Campagna
73ee491281 wayland: fix interface versioning
Add MIN(...) with the interface version actually implemented
to all resource constructor, so that we never risk seeing requests
we don't implement (and consequently segfault)

https://bugzilla.gnome.org/show_bug.cgi?id=707851
2013-09-10 15:54:42 +02:00
Giovanni Campagna
95a9655412 wayland: fix deprecation warnings
Replace the deprecated APIs with the modern variants (which
also give us full control on the versioning).
Also, note that we only support version 2 of wl_seat. Version
3 is for multiple pointer/keyboards for a client, but
we don't implement that yet. If a client requests version 3
of wl_seat or make a version 3 request, it will get a protocol error.

https://bugzilla.gnome.org/show_bug.cgi?id=707851
2013-09-10 15:54:37 +02:00
Giovanni Campagna
72b6699efb util: fix warnings when compiling gnome-shell-wayland
Replace our version of the gettext macros with those in glib,
so that they don't conflict with gnome-shell.

https://bugzilla.gnome.org/show_bug.cgi?id=707851
2013-09-10 13:47:30 +02:00
Giovanni Campagna
3e341e83d9 mutter-launch: remove PAM usage
Left-overs from the weston-launch import

https://bugzilla.gnome.org/show_bug.cgi?id=707584
2013-09-09 18:09:08 +02:00
Giovanni Campagna
5b3340e585 MetaCursorTracker: add methods for setting the cursor visibility
clutter_stage_show_cursor()/hide_cursor() only works in the X11
backend (where someone else is in charge of showing the cursor),
and even then, it has confusing effects when running nested wayland,
so an abstraction layer is needed.

https://bugzilla.gnome.org/show_bug.cgi?id=707474
2013-09-09 18:04:07 +02:00
Giovanni Campagna
6f4f611ba8 MetaCursorTracker: extend with query pointer abilities
We need an abstraction in gnome-shell for XQueryPointer, and
MetaCursorTracker seems a good place for it.

https://bugzilla.gnome.org/show_bug.cgi?id=707474
2013-09-09 18:04:07 +02:00
Giovanni Campagna
450afbaf51 wayland: reimplement keyboard state handling properly
We can't rely on clutter's xkb_state, because that's updated
when events are pulled from the kernel, not when we see them.
Instead, use the new clutter API to get the full modifier state
from the event (which, as a side effect, also works when clutter
is using the X11 backend for running nested).

https://bugzilla.gnome.org/show_bug.cgi?id=706963
2013-09-09 17:59:45 +02:00
Giovanni Campagna
28708e4317 MetaWaylandSeat: don't use use events to count pressed buttons
Use the modifier mask instead, as events can get lost if there
is a clutter grab or if some other actor is capturing events.

https://bugzilla.gnome.org/show_bug.cgi?id=706124
2013-09-09 17:59:45 +02:00
Giovanni Campagna
9f64f2cf4f Rename META_POWER_SAVE_UNKNOWN to UNSUPPORTED
It conveys more clearly what this value means.

https://bugzilla.gnome.org/show_bug.cgi?id=707649
2013-09-09 15:33:53 +02:00
Giovanni Campagna
2b1eb206d3 Monitor: don't shortcut set_power_save if the value is the same as the old one
We don't get notifications from X11 when the mode is reset, so
our cached value can get stale. To work around that, always forward
requests to the backend (and let it deal with ignoring the change
if wanted)

https://bugzilla.gnome.org/show_bug.cgi?id=707649
2013-09-09 15:33:53 +02:00
Giovanni Campagna
a6dc454c49 wayland: constraint the pointer onto visible monitors when running on evdev
Use the new Clutter hook to make sure the pointer never enters
the dead area caused by the different monitor sizes.

You don't realize how much X is doing for you until you lose it...

https://bugzilla.gnome.org/show_bug.cgi?id=706655
2013-09-09 12:08:47 +02:00
Adel Gadllah
2d67b01c3a window-actor: Use more conservative paint volume
We know which part of the window is not obscured, so take advantaged of that
to limit the size of the paint volume that we report.
2013-09-04 20:08:24 +02:00
Neil Roberts
6014d31dea Don't create a dummy texture for the texture pipeline template
The meta_create_texture_pipeline function used to create a dummy 1x1
texture so that it could make sure that the all of the state that
affects the shader generation would be set on the template pipeline so
that Cogl could share the pipeline's shader with any other pipelines
that are just rendering a texture. This is no longer necessary because
the only thing that affects the shader generation is the texture type,
not the actual texture data and Cogl now has a function to explicitly
set the texture type which we can use instead. Additionally even if
the template mechanism is not used at all Cogl will still end up
reusing the same shader because it now has a shader cache which is
indexed by the pipeline state so pipeline's don't strictly need to
share ancestry in order to take advantage of it. However we still
might as well use the function because if there is a common ancestry
it is faster to look up the shader because Cogl doesn't need to hash
the pipeline state.

https://bugzilla.gnome.org/show_bug.cgi?id=707458
(cherry picked from commit c5bf60eab4)
2013-09-04 15:29:04 +01:00
Jasper St. Pierre
bf78f067a2 Make sure to always call va_end 2013-09-03 16:10:10 -04:00
Jasper St. Pierre
ddb9929dad compositor: Remove some uninitialized variables 2013-09-03 16:10:10 -04:00
Jasper St. Pierre
2098ec2d16 theme-parser: Remove a duplicate paste
How did this sneak in there?
2013-09-03 16:10:10 -04:00
Jasper St. Pierre
97eece6607 display: Add some missing breaks
If we somehow get an event with a wrong device ID, we should not
be comparing bad event IDs.
2013-09-03 16:10:10 -04:00
Ray Strode
7ac9a6e241 compositor: initial has_window to FALSE in sync_actor_stacking
Spotted by Jasper, discussed on IRC.
2013-09-03 16:09:05 -04:00
Giovanni Campagna
b53bf0e8c2 Fix distcheck
Missing translation files, missing dists and some -Werrors.
2013-09-03 17:00:18 +02:00
Giovanni Campagna
a26ded47d9 Add a private gtk-mutter protocol
Add a new interface, gtk_shell, than can be used by gtk to
retrieve a surface extension called gtk_surface, which will be
used to communicate with mutter all the GTK extensions to EWMH

https://bugzilla.gnome.org/show_bug.cgi?id=707128

Add support for GTK application menus

To do so, we need to be able to set surface state before creating
the MetaWindow, so we introduce MetaWaylandSurfaceInitialState as
a staging area.
The gtk-shell-surface implementation would either write to the
initial state, or directly to the window.

At the same, implement set_title and set_class too, because it's
easy enough.

https://bugzilla.gnome.org/show_bug.cgi?id=707128
2013-09-03 10:57:28 -04:00
Giovanni Campagna
cad9e14463 Move surface state tracking and surface interface to a separate file
Move everything surface related from meta-wayland.c to meta-wayland-surface.c

https://bugzilla.gnome.org/show_bug.cgi?id=707128
2013-09-03 10:57:28 -04:00
Giovanni Campagna
806d5939e3 wayland: split headers and distribute structure definitions
Instead of having all structures in one huge headers, move them
in the appropriate place, and create one header for surface state.

https://bugzilla.gnome.org/show_bug.cgi?id=707128
2013-09-03 10:57:28 -04:00
Giovanni Campagna
0f0c23fbab wayland: generalize ShellSurface to SurfaceExtension
We want to implement new shells and new extension interfaces
for wl_surface, so generalize the book-keeping structures.

https://bugzilla.gnome.org/show_bug.cgi?id=707128
2013-09-03 10:57:28 -04:00
Giovanni Campagna
cbe5b6b3bc meta-wayland: intersect the damage region with the window size before applying
According to the wayland documentation, damage outside the
window size is ignored.
This happened with xwayland+wlshm (causing a GL error when calling
TexSubImage2D), probably due to not resizing the buffer
until we receive the corresponding X event.
Might also be an off-by-one in xwayland, as the window size did
not actually change.

Note: we might want to take the configure_notify path instead,
and keep the GL/clutter size consistent with wayland rather than
X, because in the end that's what matters for events and composition.

https://bugzilla.gnome.org/show_bug.cgi?id=706289
2013-09-03 10:16:47 -04:00
Giovanni Campagna
590cf4e832 MonitorXrandr: check the event timestamps before reconfiguring
If, checking the event timestamps, we see that a new configuration
was explicitly requested by an another XRandR client, don't proceed to
apply the intended configuration again, even if looking at the
EDIDs it appears that the outputs changed.
This works around some buggy Xorg drivers (qxl, vbox) that generate
a new serial number everytime the user resizes the host window.

https://bugzilla.gnome.org/show_bug.cgi?id=706735
2013-09-02 17:36:03 +02:00
Cosimo Cecchi
22ca820c44 idle-monitor: fix event propagation to devices
device_id_max is set to the device_id in ensure_device_monitor(), but we
will loop only to (device_id_max - 1) when propagating the sync XEvent
down, missing the device correspondng to device_id_max.

https://bugzilla.gnome.org/show_bug.cgi?id=707250
2013-09-01 17:51:10 -07:00
Jasper St. Pierre
b1206ceb66 wayland: Ensure that opaque / input regions are set at commit time
The protocol specification says that opaque / input regions should be
considered pending state and should only be actually swapped out when
the surface is committed, so it can be set atomically.
2013-08-31 13:29:02 -04:00
Giovanni Campagna
ad4053ab84 wayland: fix pointer focus for destroyed surfaces
We had an assertion in meta_wayland_surface_free() that after
a repick() we would not choose the freed surface, but that didn't
consider surfaces destroyed while holding the implicit pointer
grab (ie, because the user clicked on the X button). In that case,
we need to bypass the grab infrastructure and explicitly unfocus
the dead surface.

https://bugzilla.gnome.org/show_bug.cgi?id=706982
2013-08-30 16:07:00 +02:00
Colin Walters
7bd4e6ecb0 weston-launch: Don't segfault if passed no arguments
Probably not exploitable since I think Linux always puts NULL there,
but let's actually check.
2013-08-30 08:26:31 -04:00
Giovanni Campagna
deeb1db1ac wayland: don't free surfaces that have a window associated
After a MetaWaylandSurface is associated with a MetaWindow, it
should be freed only when the MetaWindow is unmanaged. For wayland
clients, the window is unmanaged when the resource is destroyed,
but for X11 clients we want to wait for the unmap event.

https://bugzilla.gnome.org/show_bug.cgi?id=705917
2013-08-30 10:37:25 +02:00
Giovanni Campagna
7eb4bfbea3 wayland: implement support for plugin modality
Calling XIGrabDevice has no effect under wayland, because the
xserver is getting events from us. Instead, we need to use our
own interfaces for grabs.
At the same time, we can simplify the public API, as plugins
should always listen for events using clutter.

https://bugzilla.gnome.org/show_bug.cgi?id=705917
2013-08-30 10:37:25 +02:00
Giovanni Campagna
59b274f12f MetaWaylandKeyboard: use the new clutter-evdev support for xkbcommon
We need to track the full xkb_state to have the necessary information
to send to the clients, otherwise they may get confused and lock
or invert the modifiers. In the evdev backend, we just retrieve the
same state object that clutter is using, while in the other backends
we fake the state using what clutter is providing (which is a subset
of what X11 provides, which would be necessary to have full state)

https://bugzilla.gnome.org/show_bug.cgi?id=705862
2013-08-30 10:37:25 +02:00
Giovanni Campagna
e311cef013 Add keybindings for switching VTs
Once mutter is started from weston-launch on its own VT, there is
no way to change VT again (for example to actually start an application),
because the keyboard is put in raw mode.
So introduce some keybindings mimicking the standard X ones (Ctrl+Alt+Fn)
that switch the VT manually when activated.

https://bugzilla.gnome.org/show_bug.cgi?id=705861
2013-08-30 10:32:55 +02:00
Giovanni Campagna
e72f81c24f wayland: add TTY and DRM master management
Now that we have a setuid launcher binary, we can make use of
using a private protocol through the socket we're passed at startup.

We also use the new hook in clutter-evdev to ask mutter-launch for
the FDs of the input devices we need, and we emulate the old X
DRM lock with a nested GMainContext without sources.

In the future, mutter-launch will be replaced with the new logind
API currently in development.

https://bugzilla.gnome.org/show_bug.cgi?id=705861
2013-08-30 10:32:55 +02:00
Giovanni Campagna
96fa518576 mutter-launch: augment with VT and TTY handling
Set the TTY mode appropriately at startup, and clean it up
when the compositor exits. Also, take control of VT switching,
including the calls to drmSetMaster and drmDropMaster as appropriate.
In the future, we the kernel implements the mute evdev ioctl,
we'll also make sure that input devices are appropriately released.

https://bugzilla.gnome.org/show_bug.cgi?id=705861
2013-08-30 10:32:55 +02:00
Giovanni Campagna
e263b3624c mutter-launch: use systemd to obtain the TTY
Using the command line or an environment variable is dangerous,
as those can be spoofed to gain access to other sessions.

https://bugzilla.gnome.org/show_bug.cgi?id=705861
2013-08-30 10:32:55 +02:00
Giovanni Campagna
1c34f0b342 mutter-launch: make sure that the spawned binaries sees the right libraries
Being a setuid binary, our LD_LIBRARY_PATH is cleared by glibc at
startup, but we need the spawned binary to see it, otherwise
jhbuild doesn't work, so hardcode it using the configured libdir.

https://bugzilla.gnome.org/show_bug.cgi?id=705861
2013-08-30 10:32:55 +02:00
Giovanni Campagna
2d27873f98 mutter-launch: simplify by removing features we don't need
Remove the ability to launch as a different user, which we don't
need because we're spawned by gdm or by the user manually on the
command line.
At the same time, require an active local session, and remove
the ability to run from anywhere by being in the right user group
(which automatically gives you root-like privileges)

https://bugzilla.gnome.org/show_bug.cgi?id=705861
2013-08-30 10:32:55 +02:00
Giovanni Campagna
fd40a12213 wayland: import weston-launch setuid launcher
To run mutter as a display server, one needs to acquire and
release the DRM master, which is only possible for root, so
we take advantage of weston-launch, a small setuid helper binary
written for the weston project. We import our own slightly
modified copy of it, because weston-launch only launches weston,
for security reasons.

https://bugzilla.gnome.org/show_bug.cgi?id=705861
2013-08-30 10:32:55 +02:00
Jasper St. Pierre
57406e0a9e shaped-texture: Actually fetch rectangles from the blended_region
We checked for the blended region but actually fetched rectangles from
the clip region.
2013-08-29 18:35:18 -04:00
Jasper St. Pierre
1987cbb764 window-actor: Fix build 2013-08-29 17:16:15 -04:00
Jasper St. Pierre
705978405b shaped-texture: Fix build 2013-08-29 17:14:11 -04:00
Adel Gadllah
daba05f6a7 background: Rename visible_region to clip_region
This does better reflect what this region is used for.

https://bugzilla.gnome.org/show_bug.cgi?id=703332
2013-08-29 17:08:57 -04:00
Jasper St. Pierre
1a7984be43 window-actor: Use g_clear_pointer 2013-08-29 17:05:41 -04:00
Jasper St. Pierre
1b3c77d53a shaped-texture: Remove an unnecessary set to NULL 2013-08-29 17:05:36 -04:00
Jasper St. Pierre
5b0f0d9e5b shaped-texture: Remove bad comment
We do not assume ownership of the clip region anymore.
2013-08-29 17:04:55 -04:00
Adel Gadllah
9816659fa9 meta-window-actor: Fix spacing 2013-08-29 17:04:50 -04:00
Adel Gadllah
3b1b611634 meta-window-actor: Throttle obscured frame synced apps
We must send frame_drawn and frame_timing messages to even when
we don't actually queue a redraw on screen to comply with the
WM sync spec.

So throttle such apps to down to a ~100ms interval.

https://bugzilla.gnome.org/show_bug.cgi?id=703332
2013-08-29 17:04:36 -04:00
Adel Gadllah
f08921bd0c meta-shaped-texture: Don't queue redraws for obscured regions
When we get a damage event we update the window by calling
meta_shaped_texture_update_area which queues a redraw on the actor.
We can avoid that for obscured regions by comparing the damage area to
our visible area.

This patch causes _NET_WM_FRAME_DRAWN messages to be not sent in some cases
where they should be sent; they will be added back in a later commit.

https://bugzilla.gnome.org/show_bug.cgi?id=703332
2013-08-29 17:03:48 -04:00
Jasper St. Pierre
0089b5769c shaped-texture: Turn blending off when drawing entirely opaque regions
When drawing entirely opaque regions, we traditionally kept blending on
simply because it made the code more convenient and obvious to handle.
However, this can cause lots of performance issues on GPUs that aren't
too powerful, as they have to readback the buffer underneath.

Keep track of the opaque region set by windows (through _NET_WM_OPAQUE_REGION,
Wayland opaque_region hints, standard RGB32 frame masks or similar), and draw
those rectangles separately through a different path with blending turned off.

https://bugzilla.gnome.org/show_bug.cgi?id=707019
2013-08-29 15:31:53 -04:00
Jasper St. Pierre
452be05ea0 shaped-texture: Use non-deprecated cogl APIs
https://bugzilla.gnome.org/show_bug.cgi?id=707019
2013-08-29 15:31:53 -04:00
Jasper St. Pierre
69f038f7c7 shaped-texture: Simplify pipeline creation
Split out pipeline creation to a separate function so that we don't
have so much dense code in the paint function itself, and remove some
indentation levels.

Also, don't use our own template for the unmasked pipeline, since it
has nothing different from the default pipeline template.

We also don't store the pipelines anymore since their creation isn't
really helping us; we set the mask texture and paint texture on every
paint anyway.

https://bugzilla.gnome.org/show_bug.cgi?id=707019
2013-08-29 15:31:52 -04:00
Jasper St. Pierre
2d35e07fae wayland: Add support for set_opaque_region / set_input_region
https://bugzilla.gnome.org/show_bug.cgi?id=707019
2013-08-29 15:31:52 -04:00
Jasper St. Pierre
95e2d26d03 window-actor: Mark all Wayland clients as argb32
https://bugzilla.gnome.org/show_bug.cgi?id=707019
2013-08-29 15:26:49 -04:00
Jasper St. Pierre
f506e090ea monitor: Use a more sane dummy configuration for nested mode 2013-08-29 15:26:49 -04:00
Jasper St. Pierre
0697b53826 wayland-private: Remove unused buffer fields 2013-08-28 15:28:34 -04:00
Giovanni Campagna
7d9141c56f Revert "MetaWaylandKeyboard: use the new clutter-evdev support for xkbcommon"
This reverts commit 519a06b93d.
Depends on unreviewed stuff and breaks the build.
2013-08-28 18:04:01 +02:00
Giovanni Campagna
519a06b93d MetaWaylandKeyboard: use the new clutter-evdev support for xkbcommon
We need to track the full xkb_state to have the necessary information
to send to the clients, otherwise they may get confused and lock
or invert the modifiers. In the evdev backend, we just retrieve the
same state object that clutter is using, while in the other backends
we fake the state using what clutter is providing (which is a subset
of what X11 provides, which would be necessary to have full state)

https://bugzilla.gnome.org/show_bug.cgi?id=705862
2013-08-28 17:45:25 +02:00
Giovanni Campagna
0cceddab75 MetaWayland: install an X io error handler
This way can detect X disconnections correctly, crash with a core
dump and reset the tty.

https://bugzilla.gnome.org/show_bug.cgi?id=706962
2013-08-28 17:21:18 +02:00
Jasper St. Pierre
c9830c13b4 screen: Remove unused variable 2013-08-27 08:56:06 -04:00
Giovanni Campagna
9a4783e364 Integrate the monitor manager with wayland
Use the right backend when running as a wayland compositor,
export the data to wayland clients, and use it to keep the stage
appropriately sized.
2013-08-27 10:09:39 +02:00
Giovanni Campagna
aa15c09d54 Merge tag 'xrandr_branch_point' into wayland-kms-base
Conflicts:
	src/Makefile.am
	src/core/display.c
	src/core/screen-private.h
	src/core/screen.c
2013-08-27 10:07:39 +02:00
Giovanni Campagna
62d908be42 MonitorManager: return the new backlight after changing
Modify the interface of ChangeBacklight to return the new value,
to account for rounding to HW limits.

https://bugzilla.gnome.org/show_bug.cgi?id=706729
2013-08-27 09:58:50 +02:00
Jasper St. Pierre
6526e9882b idle-monitor: Fix a warning when a callback removes the user active watch
The user active watch is a one-fire watch, but it is valid in the API
for the callback to explicitly remove the watch itself. In that case,
the watch will be invalid after the user removes it, and the memory
potentially freed. So make sure to not dereference the watch after
the callback is called.

https://bugzilla.gnome.org/show_bug.cgi?id=706825
2013-08-27 09:57:06 +02:00
Tim Lunn
ab72352c47 background: don't save pixbuf in user data
https://bugzilla.gnome.org/show_bug.cgi?id=706777
2013-08-27 09:57:06 +02:00
Giovanni Campagna
f09b9573f0 window: ignore skip-taskbar hint on parentless dialogs
Dialogs that don't have a parent should not be skip-taskbar,
otherwise they get lost and there is no way to recover them
(because they're not autoraised when activating the parent),
but toolkits and applications set the hint anyway.

https://bugzilla.gnome.org/show_bug.cgi?id=673399
2013-08-27 09:57:06 +02:00
Giovanni Campagna
ea3d2b4759 wayland: make parallel installable with regular mutter
Modify all visible instances of mutter with mutter-wayland
(libraries, folders, pkgconfig, etc.), so that the wayland
branch can be installed alongside the usual X11 mutter.

https://bugzilla.gnome.org/show_bug.cgi?id=705497
2013-08-26 15:00:29 +02:00
Giovanni Campagna
542a0886cf Remove files no one cares about anymore
mutter-plugins.pc has been replaced by libmutter.pc, and the
wm properties in the control center are long gone.

https://bugzilla.gnome.org/show_bug.cgi?id=705497
2013-08-26 15:00:29 +02:00
Giovanni Campagna
bd3d5df9ce Remove HAVE_WAYLAND ifdefs
Wayland support is always enabled now.

https://bugzilla.gnome.org/show_bug.cgi?id=705497
2013-08-26 15:00:29 +02:00
Giovanni Campagna
91cdfab495 build: make wayland support unconditional
In the wayland branch of mutter, we want to build a wayland version
of the mutter libraries, and that's much easier if we just build
wayland support unconditionally.
The define is kept to avoid a huge diff, but should be removed
in a later patch.
Also, wayland support can still be disable at runtime, by
launching mutter without the --nested switch.

https://bugzilla.gnome.org/show_bug.cgi?id=705497
2013-08-26 15:00:29 +02:00
Giovanni Campagna
1617323dca MetaShapedTexture: don't include private headers in public ones
Private headers are not installed, so they can't be referenced
from public ones.

https://bugzilla.gnome.org/show_bug.cgi?id=705497
2013-08-26 15:00:29 +02:00
Florian Müllner
bbf9358eba window: Fix a compiler warning 2013-08-23 23:09:58 -04:00
Jasper St. Pierre
9682a2aea4 window-group: Fix compiler warning 2013-08-23 22:11:37 -04:00
Jasper St. Pierre
c9fbb51775 wayland: Fix build when building without Wayland 2013-08-23 22:05:11 -04:00
Jasper St. Pierre
aa6d887214 wayland-private: Ignore deprecations around legacy_buffer
yes, it's deprecated, that's why it's marked legacy. now shush.
2013-08-23 22:00:52 -04:00
Giovanni Campagna
9bd366f2a6 MonitorXrandr: skip CRTC reconfigurations that have no effect
If we're attempting to reconfigure the CRTCs to the same parameter,
skip the X call, as in some drivers a modeset can take time and
cause flicker.

https://bugzilla.gnome.org/show_bug.cgi?id=706672
2013-08-23 18:06:02 +02:00
Colin Guthrie
5de346bfef MonitorXrandr: Fix segv when accessing possible_clones
This code requires a double pass and the segv happens later
when trying to iterate over the array.

https://bugzilla.gnome.org/show_bug.cgi?id=706598
2013-08-23 16:40:43 +02:00
Giovanni Campagna
2af20b77b6 MonitorXrandr: fix reading the current DPMS level
Add missing break statements, to avoid falling always through
to the invalid case.

https://bugzilla.gnome.org/show_bug.cgi?id=706582
2013-08-23 16:40:43 +02:00
Giovanni Campagna
9affbf10a6 MetaIdleMonitor: add wayland support
Keep a timer source that we reset when we capture an event in
MetaWayland, and fire watches accordingly.

https://bugzilla.gnome.org/show_bug.cgi?id=706005
2013-08-23 16:34:02 +02:00
Giovanni Campagna
c0acf3ae6d MetaIdleMonitor: add a DBus interface for the idle monitor
To allow other clients (gnome-session, gnome-settings-daemon)
to monitor user activity, introduce a DBus interface for the
idle monitor inside mutter.

https://bugzilla.gnome.org/show_bug.cgi?id=706005
2013-08-23 16:34:02 +02:00
Giovanni Campagna
2c1b20e15f Add a new helper for tracking user idle activity
When running as a wayland compositor, we can't use the xserver's
IDLETIME, because that's updated only in response to X events.
But we have all the events ourselves, so we can just run the timer
in process.

https://bugzilla.gnome.org/show_bug.cgi?id=706005
2013-08-23 16:34:02 +02:00
Giovanni Campagna
876f81db12 compositor: fix focusing the stage window
We can't use the X11 stage window, if clutter is not using the X11
backend (and even if it was, it would be bogus when the xwayland
server is not the one clutter is talking to). Instead, we introduce
the concept of "focus type", which we use to differentiate the
various meanings of None in the focus_xwindow field.

https://bugzilla.gnome.org/show_bug.cgi?id=706364
2013-08-20 14:41:24 +02:00
Giovanni Campagna
75f3ae14b5 MetaPlugin: simplify the modal API
Remove grab window and cursor from the API, and just grab always
on the stage window with no cursor.
This is mainly to remove the X11 usage in the public API, in preparation
for implementing this in wayland.

https://bugzilla.gnome.org/show_bug.cgi?id=705917
2013-08-20 14:25:49 +02:00
Giovanni Campagna
d26f248b0f wayland: fix a compiler warning
Implicit declaration of memset

https://bugzilla.gnome.org/show_bug.cgi?id=706363
2013-08-20 14:13:49 +02:00
Giovanni Campagna
eeb3dfc991 MonitorManager: emit a DBus signal when we change the display configuration
Using out-of-band notifications from the wayland protocol or from
X is racy, in that the client could ask for the new resources before
we have them.
Instead, with a signal, we are sure that when the client asks for
it, it will get the right values.

https://bugzilla.gnome.org/show_bug.cgi?id=706382
2013-08-20 14:08:50 +02:00
Giovanni Campagna
e66db2eab3 MonitorManager: extend the API with physical sizes
These will be needed in the new display panel designs to show
the diagonal length and physical aspect ratio.

https://bugzilla.gnome.org/show_bug.cgi?id=706322
2013-08-20 14:08:50 +02:00
Giovanni Campagna
2ae7454f36 Add MetaCursorTracker, a new helper for tracking the cursor sprite
Under X, we need to use XFixes to watch the cursor changing, while
on wayland, we're in charge of setting and painting the cursor.
MetaCursorTracker provides the abstraction layer for gnome-shell,
which can thus drop ShellXFixesCursor. In the future, it may grow
the ability to watch for pointer position too, especially if
CursorEvents are added to the next version of XInput2, and thus
it would also replace the PointerWatcher we use for gnome-shell's
magnifier.

https://bugzilla.gnome.org/show_bug.cgi?id=705911
2013-08-19 16:09:53 +02:00
Giovanni Campagna
4fd3c63da9 ui: restrict gtk to only use the x11 backend
We use GTK as a way to get the X11 connection for our internal
use, so we need it to keep using X.

https://bugzilla.gnome.org/show_bug.cgi?id=706303
2013-08-19 15:42:37 +02:00
Giovanni Campagna
909a6607c5 MonitorXrandr: try harder to get decent product/serial IDs
If the EDID does not include free-form product name and serial
number, use the numeric IDs instead, like gnome-desktop did.

https://bugzilla.gnome.org/show_bug.cgi?id=706233
2013-08-19 09:45:31 +02:00
Giovanni Campagna
015c05fbf6 MonitorXrandr: fix setting gamma ramps
The value passed to XRRCrtcSetGamma must be allocated with
XRRAllocGamma (because it relies on the locations of green and blue),
otherwise garbage is sent on the wire.

https://bugzilla.gnome.org/show_bug.cgi?id=706231
2013-08-18 12:11:42 +02:00
Giovanni Campagna
8ad5ccd2f8 MonitorConfig: switch to the real configuration file
Forgot to do before pushing...
2013-08-18 01:10:00 +02:00
Colin Walters
115cc870c7 build: Fix srcdir != builddir 2013-08-17 19:05:50 -04:00
Giovanni Campagna
3112794d83 MonitorXrandr: update the internal data structures after applying
We were relying on the XRandR events from the X server to update
the configuration, but we were calling meta_monitor_config_update_current()
immediately after, so the MonitorConfig would be updated with the
old configuration (and we would save that to disk!)

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:48:31 +02:00
Giovanni Campagna
3528b067d0 MonitorXrandr: follow the right order in applying the new configuration
First disable CRTCs that should be off in the new configuration,
then resize the framebuffer, then enable the new CRTCs.
If we don't do that, and we're making the screen smaller, X complains
with a BadMatch.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
0986b660be MonitorXrandr: resize the framebuffer prior to setting the CRTC configuration
Otherwise X11 will trim the new configuration and disable outputs
outside the screen.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
3bb5086173 Monitor: restore correct display name handling
Now that we have the right values from the EDID, we can load
the PNP database and find the proper vendor name, to show in
the control center UI.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
69467842ab MonitorXrandr: implement correct EDID parsing
To provide valid values for the vendor, product and serial fields
we need to read the EDID and parse it.
Parser kindly provided by gnome-desktop.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
57077435ed MonitorManager: add EDID properties to the output DBus description
Add "edid-file", if we have one (in the KMS case, where we can point
people to the right sysfs file), or "edid" with inline data.
These are needed by colord to build the default ICC profile for
uncalibrated displays.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
46de0ed462 MonitorManager: split the XRandR parts in a subclass
Instead of keeping a forest of if backend else ..., use a subclass
and virtual functions to discriminate between XRandR and the
dummy backend (which lives in the parent class togheter with the
common code)

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
5086626805 MetaPlugin: add a UI hook for confirming display changes
We want to show a dialog when a display change happens from the
control center. To do so, add a new vfunc to MetaPlugin and
call it when a configuration change is requested via DBus.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
bbbcd8c631 MonitorConfig: handle changes in the laptop lid
This way we don't need to track the current and previous
configuration in gnome-settings-daemon, when we already do so
in mutter.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
3b61b85f2c MonitorManager: add gamma support
Add GetCrtcGamma() and SetCrtcGamma(), that wrap the similarly
named XRandR API. These are used by GnomeRR inside the color
plugin of the control center (and may go away if the color
plugin decides to do something different under wayland)

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
cd20f1bc0b MonitorManager: ignore configuration changes that disable all outputs
If we compute a screen size of 0 in either direction, we crash
later on, as it is invalid for clutter, cogl and X.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
8b52782ed4 MonitorManager: add support for backlight
GnomeRR needs that too.
The backlight is exported as a normalized 0-100 value, or -1 if not
supported. Clamping to HW limits is handled by the backend.
Changing backlight uses a different method call, to avoid recomputing
the full display configuration every time the user presses the
backlight keys.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:53 +02:00
Giovanni Campagna
849050be95 MonitorManager: further extend the dummy backend
The default configuration is extended, which is only possible
if there are as many CRTCs as outputs, so make sure that's true.

Also, add more and bigger modes, so that different sizes will
be chosen for the three outputs.
A nice side effect of this is that with a real 1920x1080 + 1600x900
layout, if you disable the VGA you get a stage that matches the
screen size, which triggers the legacy fullscreen path in the
outside mutter.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:47:52 +02:00
Giovanni Campagna
5c27a91684 MonitorManager: store the presentation mode bit in XRandR
Use a private output property to store if the output is in
presentation mode or not, so that this information is not lost
after the configuration read back from the server.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:34:16 +02:00
Giovanni Campagna
764c472edb MonitorConfig: add support for default configurations
Activate the presentation bit on new hotplugged monitors, while
making a fully extended setup when running for the first time.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:34:16 +02:00
Giovanni Campagna
d0529b7482 MonitorConfig: add CRTC assignment
Ripped off libgnome-desktop, trimming the parts that checked
that the configuration was plausible, as that should be done
in gnome-control-center before asking mutter for a change.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:34:15 +02:00
Giovanni Campagna
8f4621240a MonitorManager: add support for persistent monitor configurations
Add a new object, MetaMonitorConfig, that takes care of converting
between the logical configurations stored in monitors.xml and
the HW resources exposed by MonitorManager.
This commit includes loading and saving of configurations, but
still missing is the actual CRTC assignments and a default
configuration when none is found in the file.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:33:37 +02:00
Giovanni Campagna
e039add240 MonitorManager: add support for DPMS levels
To the XRandR and dummy backend (and as usual the dummy backend
has no effect)

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:33:37 +02:00
Giovanni Campagna
dbd8d4d598 MonitorManager: inherit directly from DisplayConfig instead of handling signals
This way we can handle properties too.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:33:37 +02:00
Giovanni Campagna
522542c486 MonitorManager: fix handling of output transform
Read the current transform from XRandR, and expose the transforms
that are really supported on the bus.
The dummy backend now advertises all transforms, since it doesn't
actually apply them.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:33:35 +02:00
Giovanni Campagna
fc67c707e4 default plugin: add a random color background on each monitor
Instead of a full white background, make one with a random color.
This way the different "monitors" are visible and it's easier
to debug the DBus API.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:32:44 +02:00
Giovanni Campagna
c354e7e81b DisplayConfig: make the dummy backend writable
Add a number of dummy outputs and modes to the dummy backend,
and implement the writing bits.
The only visible effect is that you can change the screen size,
which resizes the output window.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:32:43 +02:00
Giovanni Campagna
bf40409d97 Reverse handling of XRandR events between Screen and MonitorManager
Now MonitorManager does its own handling of XRandR events, which
means we no longer handle ConfigureNotify on the root window.
MetaScreen reacts to MonitorManager::monitor-changed and updates
its internal state, including the new size.

This paves the way for doing display configuration using only
the dummy backend, which would allow testing wl_output interfaces.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:31:10 +02:00
Giovanni Campagna
57d083730e DisplayConfig: add the write side of the API
Implement ApplyConfiguration in terms of XRandR calls.
Error checking is done before actually committing the configuration.

If mutter is using one of the other monitor config backends, an
error is reported and nothing happens.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:31:09 +02:00
Giovanni Campagna
dc242e46c2 Extend the DBus XRandR protocol to expose cloning restriction
Turns out that even if two outputs say that they can be controlled
by a given CRTC, you can't configure them in the same CRTC unless
they are marked as "possible clones" one of the other.
This can further restrict the configuration options, so we need
to expose this limitation in the DBus API.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:22:54 +02:00
Giovanni Campagna
7e1d1003c9 Add the write side of the DBus protocol too
This is just in the documentation for now, to attract wider feedback
before we start looking at how to implement this for real.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:22:54 +02:00
Giovanni Campagna
3bb33d384f Introduce a new DBus interface for display configuration
This new interface will be used by the control center and possibly
the settings daemon to configure the screens. It is designed to
resemble a simplified XRandR, while still exposing all the quirks
of the hardware, so that the panel can limit the user choices
appropriately.

To do so, MetaMonitorMode needs to track CRTCs, outputs and modes,
so the low level objects have been decoupled from the high-level
MetaMonitorInfo, which is used by core and API and offers a simplified
view of HW, that hides away the details of what is cloned and how.
This is still not efficient as it should be, because on every
HW change we drop all data structures and rebuild them from scratch
(which is not expensive because there aren't many of them, but
at least in the XRandR path it involves a few sync X calls)

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:22:54 +02:00
Giovanni Campagna
214f31257b Rework and consolidate monitor handling in MetaScreen
Consolidate all places that deal with output configuration in
MetaScreen, which gets it either from XRandR or from a dummy static configuration.
We still need to read the Xinerama config, even when running xwayland,
because we need the indices for _NET_WM_FULLSCREEN_MONITORS, but
now we do it only when needed.

https://bugzilla.gnome.org/show_bug.cgi?id=705670
2013-08-18 00:22:54 +02:00
Giovanni Campagna
bfc87d13cb MetaWindowActor: fix reference counting issue
We need to use g_signal_connect_object(), rather than g_signal_connect(),
because the window actor can be destroyed before the window emits
the final notify::appears-focused inside unmanage, if the plugin
decides that it doesn't want to animate the destruction (which
happens with dialogs and the default plugin)

https://bugzilla.gnome.org/show_bug.cgi?id=706207
2013-08-18 00:22:07 +02:00
Giovanni Campagna
506ddc3d6c MetaWindowActor: fix reference counting issue
We need to use g_signal_connect_object(), rather than g_signal_connect(),
because the window actor can be destroyed before the window emits
the final notify::appears-focused inside unmanage, if the plugin
decides that it doesn't want to animate the destruction (which
happens with dialogs and the default plugin)

https://bugzilla.gnome.org/show_bug.cgi?id=706207
2013-08-18 00:16:59 +02:00
Colin Walters
24564c77d6 build: Fix srcdir != builddir
Need to ensure the wayland/ directory exists in $(builddir), and find
the headers there too.
2013-08-17 18:03:10 -04:00
Giovanni Campagna
18a21b67c2 wayland: move XWayland support code to its own file
Given that xwayland code is already split in meta-xwayland, it
makes sense to have there the implementation of the private
xserver protocol too.

https://bugzilla.gnome.org/show_bug.cgi?id=705816
2013-08-15 17:42:19 +02:00
Giovanni Campagna
3803fd9511 wayland: don't use fork() and SIGCHLD to spawn processes
It is a very bad idea in a glib program (especially one heavily
using glib child watching facilities, like gnome-shell) to handle
SIGCHLD. While we're there, let's also use g_spawn_async, which
solves some malloc-after-fork problems and makes the code generally
cleaner.

https://bugzilla.gnome.org/show_bug.cgi?id=705816
2013-08-15 17:41:34 +02:00
Giovanni Campagna
152d896f75 MetaWindowActor/wayland: make sure the mapped bit is correctly set
Otherwise it stays FALSE for OR windows, causing the shape region
to be empty and the actor culled from drawing.

https://bugzilla.gnome.org/show_bug.cgi?id=706078
2013-08-15 17:41:34 +02:00
Giovanni Campagna
2f3a5f2001 MetaWaylandSeat: correct logic to set the current / focused surface
The current surface refers to the surface right below the pointer
(according to the pick performed by clutter), while the focus surface
is the one receiving events. They can be out of sync in case of
grabs, in which case we should keep trying to focus the current
surface.

https://bugzilla.gnome.org/show_bug.cgi?id=706077
2013-08-15 17:41:34 +02:00
Alban Crequy
8c17b670fb keybindings: always acknowledge events to the X server
https://bugzilla.gnome.org/show_bug.cgi?id=666101
2013-08-13 11:18:48 -04:00
Jasper St. Pierre
0e098249b1 Merge remote-tracking branch 'origin/master' into wayland 2013-08-13 10:44:09 -04:00
Jasper St. Pierre
12d2e1f600 Support _GTK_FRAME_EXTENTS
https://bugzilla.gnome.org/show_bug.cgi?id=705766
2013-08-13 10:40:15 -04:00
Jasper St. Pierre
c20b007985 Reintroduce mutter binary
I accidentally deleted one too many things.
2013-08-13 10:16:01 -04:00
Jasper St. Pierre
ef480e9120 theme: Fix build breakage 2013-08-13 09:50:59 -04:00
Jasper St. Pierre
8c1c77482d Remove old, deprecated utilities that nobody has used in a million years
https://bugzilla.gnome.org/show_bug.cgi?id=704437
2013-08-13 09:39:02 -04:00
Jasper St. Pierre
e633606ca9 menu: Remove support for icon items from the window menu
We don't show these by default, and it uses deprecated API.
This also removes our only use of the stock icons, so remove
those as well.

https://bugzilla.gnome.org/show_bug.cgi?id=704437
2013-08-13 09:39:01 -04:00
Giovanni Campagna
9a5f243f73 wayland: refactor window destruction and focus
The previous code was leaving focus fields dirty in MetaWaylandPointer
and MetaWaylandKeyboard at time (which could crash the X server
because of invalid object IDs)
The new code is more tighly integrated in the normal X11 code
for handling keyboard focus (meaning that the core idea of input
focus is also correct now), so that meta_window_unmanage() can
do the right thing. As a side benefit, clicking on wayland clients
now unfocus X11 clients.
For the mouse focus, we need to clear the surface pointer when
the metawindowactor is destroyed (even if the actual actor is
kept alive for effects), so that a repick finds a different pointer
focus.

https://bugzilla.gnome.org/show_bug.cgi?id=705859
2013-08-13 09:42:55 +02:00
Giovanni Campagna
03f55b9485 wayland: fix a #warning
Remove window_surfaces, as the FIXME asks for. We don't need it
because we can obtain the surface from the MetaWindow, and
follow the wayland compositor path for both types of clients.

https://bugzilla.gnome.org/show_bug.cgi?id=705818
2013-08-13 09:42:55 +02:00
Jasper St. Pierre
0ee2c21da7 meta-wayland: Remove get_surface_rect
It's the same as get_input_rect, which we already have in window.
2013-08-12 12:13:45 -04:00
Robert Bragg
2c901cc015 wayland: implement shell surface move interface
This implements the shell surface move interface so now it's possible to
use the mouse to interactively move wayland based windows around the
screen.
2013-08-10 19:13:49 -04:00
Robert Bragg
85e66f69fa wayland: support left click to raise wayland surfaces
This adds support for raising wayland surfaces when clicked with the
left mouse button.
2013-08-10 19:13:49 -04:00
Neil Roberts
a5585327dc wayland: Add an actor for the cursor
When running Mutter under Cogl's KMS backend no cursor will be
provided so instead this makes it so the cursor will be painted as a
CoglTexture that gets moved in response to mouse motion events. The
painting is done in a subclass of ClutterStage so that we can
guarantee that the cursor will be painted on top of everything else.

This patch adds support for the set_cursor method on the pointer
interface so that clients can change the cursor image.

The set_pointer method sets a surface and a hotspot position to use
for the cursor image. The surface's buffer is converted to a
CoglTexture and attached to a pipeline to paint directly via Cogl. If
a new buffer is attached to the surface the image will be updated. The
cursor reverts back to the default image whenever to the pointer focus
is moved off of any surface.

The image for the pointer is taken from X. It gets installed into
a fixed data location for mutter.
2013-08-10 19:13:49 -04:00
Neil Roberts
268ebb1b18 wayland: Add basic input support
This copies the basic input support from the Clayland demo compositor.
It adds a basic wl_seat implementation which can convert Clutter mouse
events to Wayland events. For this to work all of the wayland surface
actors need to be made reactive.

The wayland keyboard input focus surface is updated whenever Mutter
sees a FocusIn event so that it will stay in synch with whatever
surface Mutter wants as the focus. Wayland surfaces don't get this
event so for now it will just give them focus whenever they are
clicked as a hack to test the code.

Authored-by: Neil Roberts <neil@linux.intel.com>
Authored-by: Giovanni Campagna <gcampagna@src.gnome.org>
2013-08-10 19:13:49 -04:00
Robert Bragg
40e820f551 Add support for stacking X and Wayland windows together
This breaks down the assumptions in stack-tracker.c and stack.c that
Mutter is only stacking X windows.

The stack tracker now tracks windows using a MetaStackWindow structure
which is a union with a type member so that X windows can be
distinguished from Wayland windows.

Some notable changes are:

Queued stack tracker operations that affect Wayland windows will not be
associated with an X serial number.

If an operation only affects a Wayland window and there are no queued
stack tracker operations ("unvalidated predictions") then the operation
is applied immediately since there is no server involved with changing
the stacking for Wayland windows.

The stack tracker can no longer respond to X events by turning them into
stack operations and discarding the predicted operations made prior to
that event because operations based on X events don't know anything
about the stacking of Wayland windows.

Instead of discarding old predictions the new approach is to trust the
predictions but whenever we receive an event from the server that
affects stacking we cross-reference with the predicted stack and check
for consistency. So e.g. if we have an event that says ADD window A then
we apply the predictions (up to the serial for that event) and verify
the predicted state includes a window A. Similarly if an event says
RAISE_ABOVE(B, C) we can apply the predictions (up to the serial for
that event) and verify that window B is above C.

If we ever receive spurious stacking events (with a serial older than we
would expect) or find an inconsistency (some things aren't possible to
predict from the compositor) then we hit a re-synchronization code-path
that will query the X server for the full stacking order and then use
that stack to walk through our combined stack and force the X windows to
match the just queried stack but avoiding disrupting the relative
stacking of Wayland windows. This will be relatively expensive but
shouldn't be hit for compositor initiated restacking operations where
our predictions should be accurate.

The code in core/stack.c that deals with synchronizing the window stack
with the X server had to be updated quite heavily. In general the patch
avoids changing the fundamental approach being used but most of the code
did need some amount of re-factoring to consider what re-stacking
operations actually involve X or not and when we need to restack X
windows we sometimes need to search for a suitable X sibling to restack
relative too since the closest siblings may be Wayland windows.
2013-08-10 19:13:49 -04:00