gl-renderer: compress pixman bands to simplify geometry

Pixman uses y-x banded rectangles to represent regions.  We use these
y-x banded rectangles to generate triangle fans, resulting in more
geometry than strictly necessary to draw the screen.

This patch combines the bands to reduce geometry for complex scenes.

Acked-by: "Jasper St. Pierre" <jstpierre@mecheye.net>
Tested-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Makefile.am: Link weston_multi_resource against rt library

This fixes this build failure:

/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.3/../../../../x86_64-unknown-linux-gnu/bin/ld:
clients/weston_multi_resource-multi-resource.o: undefined reference to
symbol 'clock_gettime@@GLIBC_2.2.5'
/usr/lib/gcc/x86_64-unknown-linux-gnu/4.7.3/../../../../x86_64-unknown-linux-gnu/bin/ld:
note: 'clock_gettime@@GLIBC_2.2.5' is defined in DSO /lib64/librt.so.1
so try adding it to the linker command line
/lib64/librt.so.1: could not read symbols: Invalid operation
xwayland: fix fullscreening

set_fullscreen has been sending configure before changing the state
and xwayland windows added border to the fullscreen size.

This fixes the bug:
https://bugs.freedesktop.org/show_bug.cgi?id=83502

Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>
Reviewed-by: Ryo Munakata <ryomnktml@gmail.com>
Tested-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
compositor: Add idle timeout option to weston.ini

Weston's idle timeout can already be set via the '-i' command-line
option, but this patch lets users specify it also via weston.ini.
Note that the command-line option takes precedence over the .ini,
should the option be set by both.

This patch also Updates weston.ini man page with idle-timeout bits

https://bugs.freedesktop.org/show_bug.cgi?id=83921

Signed-off-by: Frederic Plourde <frederic.plourde@collabora.co.uk>
Reviewed-by: Bryce Harrington <b.harrington@samsung.com>
man: explain idle-time=0 in weston.ini

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
configure.ac: Indicate headless compositor presence in config.h

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
compositor-headless: allow rendering with pixman

Allow the headless backend to render into an off screen buffer with pixman.

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
compositor-headless: add support for transforms set on command line

We now allow --transform with the headless compositor, however it still
doesn't parse anything out of weston.ini

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
compositor: Document options for headless compositor

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>

[Pekka: s/Wayland surface/memory surface/, and say default renderer.]
Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
tests: Allow tests to use customized command line parameters

Tests will now return the extra command line parameters they need
when run with --params

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
input: don't run the key bindings on focus in

When getting the focus we get the list of pressed keys, but we are
not supposed to run the key binding on them.

Reviewed-by: Daniel Stone <daniel@fooishbar.org>
desktop-shell: don't crash input-panel if no kbd focus

If a keyboard exists but it has no current focus, yet something asks the
input-panel to come up, we would crash here. Check that there is a focus
before attempting to use it.

Maybe there should not even exist a case where input-panel tries to come
up without a keyboard focus, but I am not sure there is no race where it
could happen.

In any case, this fix was brought up by the ivi-shell work, where I
suppose you can somehow hit it.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Cc: Tanibata, Nobuhiko <ntanibata@jp.adit-jv.com>
compositor: Drop legacy backends in favor of libinput

Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
configure: remove input backend result

Don't print a line with empty value.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
simple-shm: explain two initial roundtrips

Explain carefully why we need two roundtrips, not just one, not just
dispatch and roundtrip, but two roundtrips after creating the
wl_registry object.

v2: Explain what initial events are, and that this is a general
technique.

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
Reviewed-by: Marek Chalupa <mchqwerty@gmail.com>
input: Use slightly less obscure logic in evdev_notify_keyboard_focus()

While the test is actually correct (for non-negative numbers), it's not
at all clear and seems to be an accidental order of operations mistake.

Also, add an assert() to make sure this number is never negative.

Closes bug 86346 - https://bugs.freedesktop.org/show_bug.cgi?id=86346

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Marek Chalupa <mchqwerty@gmail.com>
dnd: Fix some mouse cursor issues

When ending a drag in the window the cursor will be wrong until the mouse
is moved again.  This is because the item being dragged isn't added
until after the enter event.

Also, when picking up an item while moving the mouse the cursor can switch
back to a non-drag cursor before the drag begins.  This is because of a
slight delay between button click and drag start.

Finally picking up or dropping an item under a second pointer could cause
that pointer to have the wrong cursor.

Closes one of the issues in bug 56298
https://bugs.freedesktop.org/show_bug.cgi?id=56298

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Tested-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
tests: Include "config.h" as first header

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
tests: Cleanup superfluous headers

Mostly remove headers that aren't actually needed for anything.
Add stdint.h to permit dropping xf86drm.h, which is otherwise unneeded.

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Acked-by: Marek Chalupa <mchqwerty@gmail.com>
Tested-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
tests: Move ARRAY_LENGTH to a shared header for reuse

Signed-off-by: Bryce Harrington <bryce@osg.samsung.com>
Reviewed-by: Marek Chalupa <mchqwerty@gmail.com>