Remove dbus-launch from weston.desktop

Most display managers handle starting a dbus session daemon for you, so
it does not make sense to start our own. Without this patch, if you run
weston from gdm, programs cannot connect to the dbus session daemon.

Reviewed-by: Daniel Stone <daniels@collabora.com>

xwm: debug when weston_surface gets created

This comes via Wayland, WL_SURFACE_ID comes via X11. They race. Nice to
get both printed.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

xwm: split out weston_wm_window_set_pending_state_OR()

Having it in a separate function makes it more clear what it is, and
allows it to be called from elsewhere.

This really is the set_pending_state() alternative for override-redirect
windows, because OR windows do not get a frame window created. Also OR
windows will never hit the normal set_pending_state() because
weston_wm_window_schedule_repaint() special-cased windows without a
frame window and returned early without scheduling.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

xwm: move fini near init in set_pending_state

Move the region fini just above the region init. They are a pair and
belong togeether. Split a long line.

Reads better this way. No functional changes.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

xwm: split weston_wm_window_draw_decoration()

Split the function into two:
- weston_wm_window_draw_decoration() that only draws the decorations
with Cairo, and
- weston_wm_window_set_pending_state() which sets up the surface state
to be latches into use on the next commit from Xwayland.

The new weston_wm_window_do_repaint() is the equivalent of the old
weston_wm_window_draw_decorations(), everything still happens the same
way as it was. Just some debug messages have been reworded.

weston_wm_window_read_properties() is moved into
weston_wm_window_do_repaint() because it is not strictly a part of
drawing decorations. The same with resetting repaint_source.

draw_decorations does not need the child position nor xwayland
interface. Also some convenience variables have been eliminated.

set_pending_state code has been un-indented by one level, so the change
is best viewed with whitespace changes ignored.

This patch makes the code more readable, and prepares for calling the
draw_decorations and set_pending_state from different places.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

shell: implement set_xwayland_position

Store the initial xwayland position explicitly in struct shell_surface.
New variables are needed, because e.g. saved_x, saved_y are the view
position, and to compute that we need the window geometry, which is not
available before the first commit, so it's not available at
set_xwayland_position() time.

Regression: kcachegrind (Qt 4, X11), the first menu invocation will
slightly misplace the menu if the window has not been manually moved.

Problem: geometry is not taken into account due to a race between XWM
drawing decorations and Xwayland committing the first buffer.

Use the same debugging guard as XWM.

v3: merged with "desktop-shell: debug set_position_from_xwayland"

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

xwayland: detect initially positioned X11 windows

X11 applications expect -geometry command line option to work for
setting the initial window position, but currently this does not work.

During map, detect X11 windows that set an explicit position. This works
by heuristics: if window position is not 0,0 then it is explicitly
positioned. Legacy fullscreen windows are also at 0,0 but these are
detected earlier.

Explicitly store the window position at map request time to detect
client-positioned windows, and use it as the suggested initial position.
weston_wm_window::x and y have been overwritten due to reparenting when
we eventually need the initial position.

This patch requires that the new set_toplevel_with_position() hook is
implemented in the shell.

Note that this patch is about positioning xwayland toplevels, not
override-redirect windows which are already handled.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

libweston-desktop: add set_xwayland_position API

X11 applications expect -geometry command line option to work for
setting the initial window position, but currently this does not work.

Add provision to relay the initial position through libweston-desktop:
- weston_desktop_api gains a new entry set_xwayland_position
- implement set_toplevel_with_position() in xwayland internal interface

Once xwayland plugin starts calling set_toplevel_with_position(),
libweston-desktop can relay that information to a shell if the shell
wants to hear it.

If a shell does not implement the set_xwayland_position hook, the
old behaviour remains: the shell positions xwayland toplevels like any
other.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

xwayland: add set_toplevel_with_position to internal API

Add a new entry to the internal interface between the xwayland plugin
and libweston-desktop (or any other desktop protocol implementation).
The new entry is identical to set_toplevel except it carries an absolute
position for the toplevel window.

Following patches will implement this new entry in
libweston-desktop and start using it in XWM.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

xwm: fix intermittent half-drawn decorations problem

To reproduce the problem:
- start weston (x11 backend worked, glamor in Xwayland makes no
  difference)
- start xterm
- very very slowly move the pointer in the xterm decorations onto or
  away from a button
- the moment the decorations are updated, they will appear incomplete,
  e.g. completely without buttons and title text
- if you cause just one more pointer motion event, the decorations will
  update to completely drawn appearance

Another way to reproduce the problem is to have an xterm and change its
window title. This is easy if you use a shell prompt that updates the
terminal window title. When the title updates, decorations will be
half-drawn until something happens in XWM.

The fix: flush.

Apparently the drawing commands did not get flushed to the X server
until any other X11 action pushed them through.

xcb_flush() is the real fix here. cairo_surface_flush() is added just
for good measure, because documentation indicates it would be better
used, however it was not strictly necessary to fix the problem in my
experiments.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Tested-by: Emmanuel Gil Peyrot <emmanuel.peyrot@collabora.com>
Reviewed-by: Emmanuel Gil Peyrot <emmanuel.peyrot@collabora.com>

weston: Add a specific option to load XWayland

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

weston: Make the shell entrypoint specific

This avoids loading a shell as a module, so we are sure to have only one
shell loaded at a time.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

weston: Properly namespace modules entrypoint

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

libweston: Properly namespace modules entrypoint

Use different functions so we cannot load a libweston common module in
weston directly or the other way around.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

libweston: Properly namespace backends entrypoint

This prevents loading a backend as a simple module. This will avoid
messing up with backends when we will introduce libweston common
modules.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

Makefile.am: Link modules to libweston.la

Modules are using libweston symbols (at least weston_log) and should
explicitly link to it.

This patch also reorders some flags.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

compositor-drm: allow mode frequency selection

As an option, allow to specify a mode (from the configuration file) by
its refresh rate.
Example of valid syntax:
- "mode=1920x1080"    Select a 1920x1080 mode, refresh rate undefined.
- "mode=1920x1080@60" Select the (or one of the) 1920x1080 60 Hz mode.

Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

libweston: Position layers in an absolute way

Currently, layers’ order depends on the module loading order and it does
not survive runtime modifications (like shell locking/unlocking).
With this patch, modules can safely add their own layer at the expected
position in the stack, with runtime persistence.

v4 Reviewed-by: Giulio Camuffo <giuliocamuffo@gmail.com>
Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Acked-by: Daniel Stone <daniels@collabora.com>
[Pekka: fix three whitespace issues]
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

xwm: delete dead flags from weston_wm_window_draw_decorations()

Obviously unused. Looks like weston_wm_window_activate() is doing that
job.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

xwm: postpone geometry dirtying from pending.opaque

Changing the opaque region has no immediate effect, therefore there is
no need to mark the view geometry dirty.

The view geometry will be invalidated automatically by the next commit
from Xwayland, in weston_surface_commit_state(). The dirtying did not
apply pending state.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

xwm: debug print deleted property name

Use wm_log_continue() to avoid printing the timestamp in the middle of a
message.

Print the name of the property that got deleted.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

xwm: debug changes to override-redirect flag

For every event we handle and that delivers the override-redirect flag,
print it to debug log.

Add a comment to one code path explaining when it gets hit, because it
is unobvious. It also serves as a reminder that we do not handle changes
to the OR flag after Window creation.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

xwm: move set_title and set_pid

Move the calls to set_title() and set_pid() out of
weston_wm_window_read_properties() and into the three callers, each
slightly different.

xserver_map_shell_surface(): already calls these functions after
creating the shell surface, so no need to add calls.

weston_wm_handle_map_request(): can be called only on unmapped (in X11)
Windows, so no need to add calls.

weston_wm_window_draw_decoration(): window->shsurf and window->surface
are either both set or both NULL, so the check for window->shsurf is
removed when moving the set_title() and set_pid() calls under a
window->surface check.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

xwm: move frame_set_title() into draw_decoration()

The only thing using the frame title is frame_repaint(). Move the call
to frame_set_title() from weston_wm_window_read_properties() into
weston_wm_window_draw_decoration() where the only call to
frame_repaint() is.

Do not check for window->name == NULL, because frame_set_title() handles
NULL just fine. Also, once window->name becomes set, it cannot become
NULL again unless strndup() fails. The name string can be reset to
the empty string in any case.

This change is prompted by future refactoring where at
weston_wm_window_read_properties() time the frame might not have been
created yet.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

xwm: clarify props[] in weston_wm_window_read_properties()

The props array contained offsets to struct members. It is convenient
for writing static const arrays as you only store a constant offset and
compute the pointer later. However, the array was not static to begin
with, the atoms are not build time constants. We can as well just store
the pointer directly in the array.

Entries that did not use the offset had bogus offsets, producing
pointers to arbitrary fields. They are changed to have a NULL pointer.
If the code unintentionally used the pointer, it will now explode rather
than corrupt memory.

Also explain the use of the #defined constants and #undef them when they
get out of scope. This clearly documents that they are just a convenient
hack to avoid lots of special cases in the function.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

xwm: detect legacy fullscreen on MapRequest

The legacy fullscreen state needs to be detected at MapRequest time,
because that is when the X11 client has alredy set up the initial window
state.

Doing it at xserver_map_shell_surface() meant that it would be done as a
response to Xwayland creating the wl_surface and XWM receiving the
WL_SURFACE_ID ClientMessage, whichever came later. At that point the X11
client might still be setting things up in theory, though in practice
most of the X11 communication has already happened when
xserver_map_shell_surface() gets called.

The real reason for this is to clean up xserver_map_shell_surface() from
everything that would affect drawing the decorations. This patch is one
part of that clean-up.

The weston_output_weak_ref logic is not put into compositor.h, because
there are no other users for it at this time. We need to protect against
the output going away.

A side-effect of this patch is that saved_width and saved_height will
now get overwritten also for legacy fullscreen windows. Previously, they
were left to zero as far as I could tell.

NOTE: This stops override-redirect legacy fullscreen windows from being
detected as fullscreen. MapRequest processing does not happen for OR
windows. These windows get detected as type XWAYLAND instead.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

libweston-desktop/xwayland: debug commits

Helps tracking what happens with XWM.

Use the same debugging guard as XWM.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

xwayland: WM debug prints

Add WM debug prints on map, decoration drawing and geometry setting.
These help see the sequence and timing of operations, when debugging
Xwayland window management glitches.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

compositor-wayland: Support building without EGL

Signed-off-by: Armin Krezović <krezovic.armin@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

window: Check for NULL surface in keyboard_handle_enter

This can happen if you right-click in weston-terminal a few times very quickly.
The pointer_handle_enter callback already checks for NULL, so let's do that in
keyboard_handle_enter, too.

Signed-off-by: Dima Ryazanov <dima@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

editor: Drop g_type_init() call

HAVE_PANGO is not in any AC_DEFINE(), so the check is just wrong.
g_type_init() was never called, which is fine since GLib 2.36 anyway.
It is better not to have a wrong usage of HAVE_PANGO here.
Just check for GLib 2.36 in configure.ac instead.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

man/weston.ini: Fix panel-position

It was renamed from panel-location in
55d5701ddf018887a30d9ddede38550967da61bc, and gained a few possible
values.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

desktop-shell: Support panel-position 'none'

The manpage claims that none is valid, so let's make it so.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

desktop-shell: Initialise panel surface listener

The desktop-shell output destroy code assumes that we always set up a
panel listener. Initialise its list explicitly, so if we don't have a
panel, then we can still unconditionally destroy the listener on output
destroy.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

desktop-shell: Stop asking for a RGB565 background

This makes the background image look much nicer, at the expense of
slightly more memory bandwidth used.

Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

compositor-x11: Remove support for ancient XCB

We had two non-pkg-config check paths in the configure script, to
support XCB functionality used before XCB had had an accompanying
release: xcb_poll_for_queued_event (released in 1.8, 2012), and a
usable XKB event mechanism (released in 1.9, 2013).

Convert the former to a version-based hard dependency, and the latter to
a version-based soft dependency. This avoids two compiler checks.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

configure: search for lib with clock_getres()

Like clock_gettime(), clock_getres() is in -lrt for glibc < 2.17.
Add a check for it, like is done for clock_gettime().

Fixes:
    http://autobuild.buildroot.net/results/bce/bcecdbbce4a99eb1e9bfbf519857bf94d8952037/

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

autoconf: Fix AC_MSG_RESULT message when disabling features

Some variables were previously only set inside conditions, making their
output empty.

Signed-off-by: Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
Reviewed-by: Daniel Stone <daniels@collabora.com>

xwayland: fix three minor typos

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

wcap: fix a typo in README

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

zunitc: fix a typo in a comment

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

zunitc: fix a couple of typos

- even -> event
- attatch -> attach

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

shared: fix a typo in a comment

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

shared/helpers.h: fix a typo in a comment

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

releasing: fix a typo

Fix duplicate word "the".

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

protocol: fix grammar

a icon -> an icon

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

notes: fix a typo

pratically -> practically

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

man: fix grammar

an user -> a user

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

compositor: fix a minor typo

emited -> emitted

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

compositor-drm: fix a couple of typos

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

ivi-shell: fix minor typos

- ivi-shell/hmi-controller.c:41: a to an
- ivi-shell/hmi-controller.c:1296: Duplicated 'a'
- ivi-shell/ivi-layout-export.h:28: An to A

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

desktop-shell: fix a typo

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

configure.ac: correct text

Fix duplicate occurrence of "and".

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

clients: fix a couple of trivial typos

Signed-off-by: Abdur Rehman <arehmanq199@gmail.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

compositor: Assign new views to the primary plane

When we create a new view, assign it to the primary plane from the
beginning.

Currently, every view across the compositor will be assigned to a plane
during every repaint cycle of every output: the DRM renderer's
assign_planes hook will either move a view to a drm_plane, or to the
primary plane if a suitable drm_plane could not be found for the output
it is on. There are no other assign_planes implementation, and the
fallback when none is provided, is to assign every view to the primary
plane.

DRM's behaviour is undesirable in multi-output situations, since it
means that views which were on a plane on one output will be demoted to
the primary plane; doing this causes damage, which will cause a spurious
repaint for the output. This spurious repaint will have no effect on the
other output, but it will do the same demotion of views to the primary
plane, which will again provoke a repaint on the other output.

With a simple fix for this behaviour (i.e. not moving views which are
only visible on other outputs), the following behaviour is observed:
  - outputs A and B are present
  - views A and B are created for those outputs respectively, with SHM
    buffers attached; view->plane == NULL for both
  - current buffer content for views A and B are uploaded to the
    renderer
  - output A runs its repaint cycle, and sets keep_buffer to false on
    surface B's output, as it can never be promoted to a plane; it does
    not move view B to another plane
  - output B runs its repaint cycle, and moves view B to the primary
    plane
  - weston_view_assign_to_plane has work to do (as the plane is changing
    from NULL to the primary plane), calls weston_surface_damage and
    calls weston_surface_damage
  - weston_surface_damage re-uploads buffer content, possibly from
    nowhere at all; e508ce6a notes that this behaviour is broken

Assigning views to the primary plane when created makes it possible to
fix the DRM assign_planes implementation: assign_planes will always set
keep_buffer to true if there is any chance the buffer can ever be
promoted to a plane, regardless of view configruation. If the buffer
cannot be promoted to a plane, it must by definition never migrate from
the primary plane. This means that there is no opportunity to hit the
same issue, where the buffer content has already been discarded, but
weston_view_assign_to_plane is not a no-op.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

compositor-drm: Reshuffle and comment plane conditions

Try to harmonise the various plane-import paths a little bit, starting
with reshuffling and commenting the conditions to do so.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>
Differential Revision: https://phabricator.freedesktop.org/D1413

Remove DPMS-on when going offscreen

Forcing DPMS on when we lose our session may force an expensive modeset
operation, which is pointless if the next consumer (another compositor,
or the console) is going to do a modeset. These should force DPMS on
regardless.

This actively causes problems for the DRM backend, in that it may
actually require a repaint to set coherent state for DPMS off -> DPMS on
transitions, which is very much not what we want when going offscreen.

As DRM is the only backend which actually implements DPMS, just remove
this call.

Differential Revision: https://phabricator.freedesktop.org/D1483

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

compositor-drm: Remove open-coded weston_compositor_wake

This always changes the state to ACTIVE when we enter the session,
whereas the previous implementation preserved the state (i.e. if state
was SLEEPING on exit, it would be restored to SLEEPING, but also with a
repaint). This seems more helpful behaviour, however: if you enter a
session, it's probably in order to interact with it.

Differential Revision: https://phabricator.freedesktop.org/D1482

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

compositor-drm: Delete drm_backend_set_modes

Even if we do have a framebuffer matching the mode, we immediately
schedule a repaint, meaning we either do work for no reason, or show
stale content before we bring up the new content.

Delete this and just let repaint deal with it.

Differential Revision: https://phabricator.freedesktop.org/D1481

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>

compositor-drm: Store width and height inside drm_fb

This will be used so we can later determine the compatibility of drm_fbs
without needing to introspect external state.

Differential Revision: https://phabricator.freedesktop.org/D1487

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>

compositor-drm: Use signed int for width/height

This makes it sign-compatible with weston_output->{width,height}.

Differential Revision: https://phabricator.freedesktop.org/D1486

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>

compositor-drm: Use fb->fd consistently

Everyone else uses fb->fd rather than pulling the FD back out of GBM.
Use that in the destroy callback too.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>
Differential Revision: https://phabricator.freedesktop.org/D1406

compositor-drm: Extract EGL destroy to helper

No functional change.

Differential Revision: https://phabricator.freedesktop.org/D1484

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>

compositor-drm: Simplify drm_sprite_crtc_supported

No need to walk the CRTC list every time looking for CRTC indices, when we
already have the CRTC index stashed away. Taking the plane as an argument
also simplifies things a little for callers, and future-proofs for a
potential future KMS API which passes a list of supported CRTC IDs rather
than a bitmask of supported CRTC indices.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>
Differential Revision: https://phabricator.freedesktop.org/D1407

compositor-drm: Comment struct members

Clarify the difference between crtc_id (DRM object) and pipe (index into
drmModeRes->crtcs array, possible_crtcs bitmask).

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Armin Krezović <krezovic.armin@gmail.com>
Differential Revision: https://phabricator.freedesktop.org/D1405

libweston-desktop: don't crash when getting the pid for X clients

X client's don't have a wl_client associated with their
weston_desktop_client, so make sure to not use it.

Signed-off-by: Giulio Camuffo <giuliocamuffo@gmail.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

tests: Skip Xwayland test if binary isn't available

We know we're not going to succeed if the binary isn't installed, so
skip the test in that case.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>

libweston: Make module loading safe against long paths

Avoid any buffer overflows here by checking we don't go over PATH_MAX
with stupid module names.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>

compositor-wayland: Destroy cursor images earlier

Destroying a wl_cursor will attempt to access the wl_display, which
we have just freed. Avoid a segfault by destroying the cursor images
before we destroy the display.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Dima Ryazanov <dima@gmail.com>

Don't prepend protocol/ to include paths

No need to add protocol/, as it's already handled by an explicit
compiler include path.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Dima Ryazanov <dima@gmail.com>

editor: Load a file if specified on command line

Add support for basic text file loading, to facilitate more expansive
testing of its UTF-8 text editing support.

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

editor: Use parse_options() from shared for command line options

Also add a basic --help option

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Yong Bakos <ybakos@humanoriented.com>

compositor-wayland: Set frame callback for Pixman

Fixing 89c2f637b9, also set the output's frame_cb for the Pixman
renderer, not just GL. Fixes a segfault when using compositor-wayland
with --use-pixman.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Dima Ryazanov <dima@gmail.com>

gl-renderer: Fix an invalid write when closing a Weston window

Call eglMakeCurrent before destroying the native EGL window, similar to what
other sample clients are already doing.

Signed-off-by: Dima Ryazanov <dima@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

compositor-wayland: Fix a use after free

When a window is being closed, the frame_done callback often runs after
the output is already destroyed, i.e:

  wayland_output_start_repaint_loop
  input_handle_button
    wayland_output_destroy
  frame_done

To fix this, destroy the callback before destroying the output.

(Also, fix the type of output in frame_done: it's passed in
a wayland_output, not a weston_output.)

Signed-off-by: Dima Ryazanov <dima@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

libweston-desktop/xwayland: add is_mapped handling for XWAYLAND

The xwayland window type XWAYLAND is not handled by the shell at all,
instead libweston-desktop maps such surfaces itself. However, it forgot
to set weston_surface::is_mapped and weston_view::is_mapped.

weston_surface::is_mapped affects the behaviour of weston_view_unmap()
and weston_surface_attach().

weston_view::is_mapped affects the behaviour of weston_view_unmap() and
weston_view_destroy().

When manually mapping a window of type XWAYLAND, mark both the view and
surface as mapped. This follows the expections in libweston, even though
the meaning of is_mapped is not clearly defined for either surface or
view.

Also, when the XWAYLAND window is manually unmapped, unmap the
weston_surface. This updates weston_surface::is_mapped to reflect the
state. However, as a side-effect it will also unmap all sibling views,
should any exist.

v2: rename surface_base to wsurface
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Acked-by: Daniel Stone <daniels@collabora.com>

libweston-desktop/xwayland: XWAYLAND surfaces are never 'added'

Add documentation (asserts) that show that windows of types XWAYLAND are
never registered with the shell.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

libweston-desktop/xwayland: clarify 'added' logic

Setting to a constant is much easier to read and grep for than setting to
a computed variable.

There are no functional changes.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Quentin Glidic <sardemff7+git@sardemff7.net>

libweston-desktop/xwayland: window type XWAYLAND cannot have a parent

Add an assert to ensure that a window of type XWAYLAND is never
attempted with a parent. Following the code though, the assert can be
made even stricter by allowing only TRANSIENT to have a parent.

This is essentially adding documentation.

v2: use stricter assert
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

XWM: debug position and size on map request

Helps debugging initial placement problems.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

XWM: debug position on create_notify

Helps debugging X11 window positioning issues.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

compositor-x11: fix segfault when use_pixman is true

Signed-off-by: Ryo Munakata <ryomnktml@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

Don't include version.h from compositor.h

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewd-by: Bryce Harrington <bryce@osg.samsung.com>

tests: Extend subsurface place_{above,below} hierarchy

Following on from b8c16c995b, extend the family tree being tested by
place_above and place_below a little, ensuring that subsurfaces can't be
placed above or below surfaces which are related to them, but aren't
their immediate parent or sibling.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>

build: fix wayland-backend distcheck

Fix the following error from 'make distcheck':

  CC       libweston/wayland_backend_la-compositor-wayland.lo
../../libweston/compositor-wayland.c:54:51: fatal error: xdg-shell-unstable-v6-client-protocol.h: No such file or directory
 #include "xdg-shell-unstable-v6-client-protocol.h"

Files generated with the scanner belong in nodist_*_SOURCES, not with
the regular sources.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Daniel Stone <daniels@collabora.com>

weston-terminal: Fix crash on first keystroke

Since 894b3rcc634 weston-terminal will crash on first keystroke if you
fail to create an xkb compose state.  This can happen if you don't have
a Compose file.

Instead, now we just return uncomposed symbols.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

compositor: allow using nested parent as a subsurface sibling

The parent of a subsurface can be used as a sibling in the place_below
and place_above calls. However this did not work when the parent is
nested, so fix the sibling check and add a test to check this case.

Signed-off-by: Daniel Stone <daniels@collabora.com>

xwayland: Create the drag-and-drop window in weston_wm_dnd_init

Just to keep it hidden so far... A lot of the plumbing necessary to
handle x11->wayland drag and drop is missing, and the current
partial handling gets in the middle for X11 drag-and-drop itself
to work.

The approach is well directed, but needs some further work, till
then, just keep our fake drag-and-drop target hidden. This allows
drag-and-drop to work between X11 clients in Xwayland, and avoids
a crash with (currently unhandled) wl_resource-less data sources.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=94218

Signed-off-by: Carlos Garnacho <carlosg@gnome.org>
Reviewed-by: Daniel Stone <daniels@collabora.com>

libweston: Add move (without scale) animation

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

desktop-shell/client: Add left/right panel position (basic) support

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

desktop-shell/client: Introduce helper variables

These variables will be much more useful in the following commit.
The indentation is off to avoid future diff noise.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

desktop-shell/client: Parse the clock format once

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

desktop-shell/client: Use a proper enum for clock format

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

desktop-shell: Properly position the panel surface

Now weston actually supports putting the panel at the bottom of the
screen.

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

desktop-shell: Compute panel size without using output

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

desktop-shell/client: Add bottom panel support

Signed-off-by: Quentin Glidic <sardemff7+git@sardemff7.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>

gl: Don't declare variables in for loop

Fixes compilation error introduced by 43cea54c:

  libweston/gl-renderer.c:2862:2: error: ‘for’ loop initial declarations
  are only allowed in C99 mode
    for (unsigned i = 0; i < ARRAY_LENGTH(swap_damage_ext_to_entrypoint);
    i++) {
    ^

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

compositor-wayland: Port to xdg-shell-v6

v2:

 - Keep wl_shell code around until xdg_shell is declared stable.

Signed-off-by: Armin Krezović <krezovic.armin@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

gl-renderer: add support of WL_SHM_FORMAT_YUYV

This patch allow gl-renderer to accept WL_SHM_FORMAT_YUYV buffers.
This is the pixel format supported by most of the USB webcams.

v2:
 - fix hsub Vs vsub inversion

Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>

compositor-x11: Move vfunc setting from set_size to enable

Signed-off-by: Armin Krezović <krezovic.armin@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>