The very similar clutter_actor_allocate_align_fill is close enough
that this is just needless duplication. Additionally, allocate_fill
already inverts the align if the text direction is RTL, so we don't
need to do that here.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
Now that StWidget is a group of sorts, it needs to account for its children
in its paint volume. Unfortunately, this causes havoc for StBoxLayout, so it
needs fixing - it's unknown why it worked when chaining up to near-identical
code in StContainer.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
The get_focus_chain() implementation in StWidget just returns all
children, it should filter for visible children instead. This
breaks keyboard navigation in various places since commit 72dad591
removed the correct implementation in StContainer.
https://bugzilla.gnome.org/show_bug.cgi?id=670904
Now that ClutterActor has a ClutterContainer implementation, we
can start removing StContainer. To help make this a bit more
understandable, instead of converting everything at once, make
StContainer a compatible API wrapper around the ClutterActor
implementation, and then we'll remove those wrappers in later
commits.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
Since an StWidget now has children, it needs to allocate those children
properly. Defer to the currently installed layout manager, like Clutter
does.
Now that we have something that allocates children in St, to prevent
double allocations, we use clutter_actor_set_allocation rather than
chaining up to StWidget::allocate.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
Now that StWidget is concrete and instantiable, we need to do something
other than return an adjusted 0 for width and height. Just chain up
to ClutterActor's default implementation, which uses the layout manager.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
Since we want to paint children by default in StWidget, we need to
provide a way for custom subclasses to paint their CSS backgrounds
without painting children... introducing st_widget_paint_background.
Additionally, remove any custom paint/pick handlers added by subclasses
of StWidget that just painted their children. This will cause double
painting if left alone.
This also removes the hacky things that some subclasses of StBin did
to prevent their one child to be painted by StBin.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
Clutter now provides two new properties on ClutterActor - first-child
and last-child, so we have notifiers on when they change. Unfortunately,
it still doesn't help us too much - we need to keep track of the previous
values of the properties so we can remove their pseudoclasses.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
We can't get rid of the implementations in StContainer just yet,
as StContainer still keeps its own child list. But this should
lower the amount of code that has to be moved around when we
remove StContainer.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
clutter_container_foreach is deprecated, so let's replace that
with some ClutterActorIter usage. Additionally, remove the checks
for ClutterContainer, as all ClutterActors are now ClutterContainers.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
Although not all "Finding and reminding" applications are ready
yet, the integration with gnome-documents' search results overlaps
enough with the "Recent Items" provider to justify its removal.
https://bugzilla.gnome.org/show_bug.cgi?id=670150
Empathy uses to support 2 D-Bus API for calls:
- StreamedMedia: legacy API
- Call.DRAFT: experimental version of the new API
Since 3.3.90, Empathy only supports Call1, the first stable version of the new
API, so the Shell should do the same.
https://bugzilla.gnome.org/show_bug.cgi?id=667694
The function may return FALSE without setting the GError, so don't
assume it is set to prevent a crash in that case. While at it, free
the GError we were leaking before.
https://bugzilla.gnome.org/show_bug.cgi?id=670418
When using systemd, polkit doesn't set the error even when returning false in g_initable_init
Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
https://bugzilla.gnome.org/show_bug.cgi?id=670319
The handle was a child of the trough, but it was allocated and painted
like it was a child of the bar. This will wreak havoc when we port over
to the new Clutter API, so let's just make it a child of the bar.
https://bugzilla.gnome.org/show_bug.cgi?id=670034
When the operation is cancelled by NetworkManager, the request is
cancelled immediately. Later when gnome-keyring invokes the callback
notifying the error we must therefore not access its memory.
Previously the callback would mistakenly treat "cancelled" (which
indicates a programmatic cancel) as "denied" (which means the user
clicked "Cancel" on the keyring prompt)
https://bugzilla.gnome.org/show_bug.cgi?id=658484
VPN secrets are stored by the plugins, that provide separate
helpers for authentication. This commit adds the support for invoking
the binaries and pass them connection details.
For plugins that support it (as exposed by their keyfile), we invoke
them in "external-ui-mode" and expect a set of metadata about the
secrets which is used to build a shell styled dialog.
https://bugzilla.gnome.org/show_bug.cgi?id=658484
ConsoleKit is being obsoleted by systemd. Accordingly port the CK logic
in the gnome-shell automount manager to systemd-logind APIs.
This makes use of systemd-logind's native C APIs which are much easier
to use than the D-Bus APIs in this case, and much faster too (since they
are synchronous and directly query the kernel for the information we
need). The dependency is compile time optional, and in order to be nice
to the Debian folks g-s compiled with this enabled fill automatically
fall back to CK support on systems lacking systemd.
A new tool, 'gnome-shell-extension-prefs' can load a new entry point from
extensions, 'prefs.js', which has an entry point to return a GTK+ widget.
This allows extensions to have their own preferences dialog, without each
extension needing to ship its own Python script and .desktop file.
https://bugzilla.gnome.org/show_bug.cgi?id=668429
Clutter, since version 1.8, does The Right Thing™ inside the default
implementation of ClutterActor::map and ClutterActor::unmap, even for
non-container actors: it will iterate over the list of children and
map, or unmap, each one of them, respectively.
This means that the requirement to override map and unmap for composite
actors to map and unmap the internal children has been dropped.
https://bugzilla.gnome.org/show_bug.cgi?id=669239
Since our implementation of background-size is now CSS-compliant, we
do not need this subtexture hack that clips a "leak". The comment here
is also incorrect.
https://bugzilla.gnome.org/show_bug.cgi?id=633462
It seems that accidentally, two variables were swapped in one code path
of the background-size implementation, causing interesting but wrong
images for some elements.
https://bugzilla.gnome.org/show_bug.cgi?id=633462
Recent mutter changes made MetaShapedTexture not a ClutterTexture,
but instead a special ClutterActor subclass that implemented the texture-y
bits itself. Use recently introduced API in MetaShapedTexture so that we can
get the raw texture data and spit it out as a PNG.
Use the new meta_shaped_texture_get_image() to get a window's texture data.
meta_shaped_texture_get_image() flattens the image against any mask it may
have, so a screenshot of it should look exactly as it does on the display.
https://bugzilla.gnome.org/show_bug.cgi?id=662486
Instead of adding every rendered frame into the recording, drop frames
and only buffer and record enough frames to match the target framerate.
Increase the default frame rate from 15 to 30, since now that we're
actually enforcing framerate, it's noticeable that 15fps is not smooth.
https://bugzilla.gnome.org/show_bug.cgi?id=669066
The default pipeline was fairly aggressive about quality, and could
be too expensive for some computers. Decrease the quality setting for
the vp8 codec from 10 to 8, and increase the speed setting from 2 to 6.
(Basically, quality affects the visual fidelity of the end result, while
speed affects how much CPU the encoder uses to get a high compression
ratio at that quality level.)
Remove videorate from the pipeline, since the GStreamer VP8 encoder can
handle variable-framerate streams. This means that we won't spend CPU
encoding duplicate frames added by videorate.
https://bugzilla.gnome.org/show_bug.cgi?id=669066
We need to indicate that our GStreamer source produces timestamped
frames, instead of the default, which is to produce a stream of bytes.
This is needed for correctness, and to avoid warnings for some
pipelines.
https://bugzilla.gnome.org/show_bug.cgi?id=669066
For the Intel drivers, using glReadPixels() to read into client-memory
directly from the frame buffer is much slower than creating a pixel
buffer, copying into that, and then mapping that for reading. On other
drivers, the two approaches are likely to be similar in speed. Create
a ShellScreenGrabber abstraction that uses pixel buffers if available.
Use that for screenshots and screen recording.
https://bugzilla.gnome.org/show_bug.cgi?id=669065
Use the correct clip offsets when taking the screenshot of a window, to
exclude possible invisible borders and to include the case where the
window doesn't have any frame itself.
.desktop files have been designed for browsing, so the existing
fields often produce insufficient results when used for search.
gnome-control-center used X-GNOME-Keywords for that purpose, which
has now been standardized as Keywords. It makes sense for us to
support it in gnome-shell as well (and encourage its use outside
of settings panels).
https://bugzilla.gnome.org/show_bug.cgi?id=609702
It seems that Debian has their own prefixes in something like
debian-xterm.desktop. To properly do application matching in these cases,
we need to strip the debian- prefix.
https://bugzilla.gnome.org/show_bug.cgi?id=665647
Writting the screenshot to a file can take a relativly long time
in which we block the compositor, so do that part in a separate
thread to avoid the hang.
https://bugzilla.gnome.org/show_bug.cgi?id=652952
A new texture has undefined contents - when we're creating a shadow,
we need to clear the contents of the texture before drawing the border
and background into it.
https://bugzilla.gnome.org/show_bug.cgi?id=668048
g_dbus_method_invocation_return_value() adopts a floating reference,
so we don't also need to unreference it; fix by replacing the code
using a more compact form using the ^ convenience character in
GVariant type specifications. (Thanks to Ryan Lortie for the
suggestion.)
https://bugzilla.gnome.org/show_bug.cgi?id=667378
According to the GIO docs, sections can have labels too. We support
them by inserting a non reactive menu item at the beginning of the
section. This item is specially flagged to be ignored while processing
changed signals from the model (since it does not correspond to any
model item)
https://bugzilla.gnome.org/show_bug.cgi?id=666681
shell_embedded_window_hide() can be called during widget destruction,
after the associated ClutterActor has been already cleared out.
Fix a crash in that case.
https://bugzilla.gnome.org/show_bug.cgi?id=633028
The application proxy is created asynchrously after the dbus name
is registed. This means that when tracking the first window (and
therefore creating the first window GActionGroup) there is no
app proxy yet.
https://bugzilla.gnome.org/show_bug.cgi?id=633028
Implement the background-size CSS property, specified by the CSS
Backgrounds and Borders Module Level 3, including the keywords
"contain", "cover", and fixed-size backgrounds.
https://bugzilla.gnome.org/show_bug.cgi?id=633462
It's not guaranteed that the application DBus proxy appears before
we receive the first focus event from the toplevel window.
Ensure that the first method to access the action muxer creates it if
hasn't been created yet.
We now have GRemoteActionGroup interface with the needed API,
implemented by GDBusActionGroup.
With the new API we could theoretically turn GActionMuxer itself into a
GRemoteActionGroup and expose the _full API to the shell so that the
timestamps could be passed from there.
Pass the current timestamp as platform data when activating
an action. This is implemented slightly hacky, since we use
clutter_get_current_event_time() to get at the timestamp, but
the alternative is to expose g_action_muxer_activate_action_full
to js, which would be quite a bit more involved.
GTK+ also exports window-specific actions, by putting the object path
for the exported action group in the _DBUS_OBJECT_PATH X property.
We add this action group to the app's muxer with a 'win' prefix,
since that is what the exported menu expects. Whenever the focus
window changes, we update the window-specific actions of its
application, and emit notify::action-group to cause the app
menu to be updated.
GDBusActionGroup api has changed again, adapt to that.
Also, use a GActionMuxer to add the 'app.' prefix to actions,
instead of manually stripping it out of the action names.
In the future, the muxer will also contain per-window actions
with a 'win.' prefix.
GMenuProxy has been replaced by GDBusMenuModel, and the object path
has been moved (now needs to be retrieved from the AppMenu GApplication
property).
Update the test to prefix each action with "app." as documented,
and use a GtkApplicationWindow instead of a plain GtkWindow.
Use the new GApplication support in ShellApp to create the application
menu. Supports plain (no state), boolean and double actions.
Includes a test application (as no other application uses GApplication
for actions)
https://bugzilla.gnome.org/show_bug.cgi?id=621203
GDBusActionGroup and GMenuProxy are new objects in GIO 2.32 that
help with accessing menus and actions of remote applications.
This patch makes it possible for the shell to associate an
application with a dbus name and from that a GMenu, that will
be shown as the application menu.
https://bugzilla.gnome.org/show_bug.cgi?id=621203
grid_width and grid_height were inverted, which caused a crash
in GdkPixbuf code. This was never noticed because the animation
in the panel is a square.
https://bugzilla.gnome.org/show_bug.cgi?id=666606
commit 5350302b09 dropped the possibility
to make a dbus name acquisition failure non-fatal.
Btw, it has also overriden the name in the error message.
Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>
Signed-off-by: Colin Walters <walters@verbum.org>
https://bugzilla.gnome.org/show_bug.cgi?id=663941
Rewrite code acquiring dbus names so that it uses GDBus, and rewrite
ShellDBus so that it is exposed on the GDBus connection. Ports of
the other objects will follow.
https://bugzilla.gnome.org/show_bug.cgi?id=648651
Not all desktop files tracked by the shell have
Exec lines. This could be because they're actually
run by another process, for instance, and the desktop
file is merely there to provide metadata. For example,
nautilus-pastebin provides a desktop file without an
Exec line.
The shell currently crashes if one of these partial
desktop files is installed and the user attempts to
search from the overview.
commit 37726a4cb6 fixed
a similar crasher.
This commit fixes the next one lower in the code.
https://bugzilla.gnome.org/show_bug.cgi?id=663815
Instead of saving the last_used_time per-app, grab the maximum time for all
windows. The logic is less hard to keep track of, and it solves some edge
case issues where windows that no longer exist update the user time, even
if none of the other windows have been used recently.
https://bugzilla.gnome.org/show_bug.cgi?id=660650
Allow push_modal to optionally only work with a keyboard only grab and
use that in altTab as a fallback to allow switching windows while a pointer grab
is in effect (like during DND operations).
https://bugzilla.gnome.org/show_bug.cgi?id=660457
For some reason, the texture cache decides to make a request and then look up
an icon in the icon theme. If it's valid, it just returns, fine, but if it
doesn't add the icon, it tries to undo the request, leaking an
AsyncTextureLoadData that isn't freed in the process.
https://bugzilla.gnome.org/show_bug.cgi?id=660968
Rather than have five or six structs allocated duplicating data,
just keep one and simplify the code considerably.
Again, part of my ongoing quest to merge St and Mx.
https://bugzilla.gnome.org/show_bug.cgi?id=660968
shell_global_get_memory_info tries to zero initialize the output
parameter with memset, but it passes the wrong size (because of
a missing *). There's no reason to do the memset, though. In the
normal case all members of the struct gets initialized before the
function returns anyway.
This commit drops the memset call in favor of one explicit 0 assignment
that only gets executed on on atypical platforms.
https://bugzilla.gnome.org/show_bug.cgi?id=662236
Without the desktop, even Nautilus hardcodes "Home" in all places
nowadays (except for the desktop itself). I think a run-time dependency
on nautilus being installed (GSettings will abort if the schema is not
found) is not worth it to keep compatibility with the desktop.
(Also, nautilus itself could probably hardcode "Home" for the desktop as
well and remove the preference).
https://bugzilla.gnome.org/show_bug.cgi?id=659895
If we add a 0-sized actor with a border-radius, we will crash as we try to
allocate a 0-sized texture in Cogl. Bail out early instead of doing that.
https://bugzilla.gnome.org/show_bug.cgi?id=661617
We originally OR'ed search terms and favored results which matched
multiple times to get more relevant results. When changing search
to AND search terms, the semantics of "multiple matches" were
changed to refer to a single term matching multiple criteria (name,
executable), which seemed like a good idea at the time.
However in practice this just results in applications whose
user-visible name matches the executable name on disk being
favored over applications using a more generic name, which
isn't too useful (in particular when taking usage frequency
into account).
https://bugzilla.gnome.org/show_bug.cgi?id=623372
Currently we use a very strict definition of "prefix", where the
search term has to match at the very beginning of the searched
criteria (application name, executable name). Use a more liberal
definition by including matches where the preceding character is
a space (application name) or hyphen (executable name) as well;
as many applications use a prefix, this should improve the quality
of results.
https://bugzilla.gnome.org/show_bug.cgi?id=623372
Application search results are internally categorized in four sets,
multiple and single prefix matches and multiple and single substring
matches. Each set is currently sorted alphabetically by application
name when concatenating the sets to the final result.
Change the last step to sort each set by usage frequency instead,
which is more likely to favor the most relevant match than
"arbitrary" alphabetic order.
https://bugzilla.gnome.org/show_bug.cgi?id=623372
Require that all terms match. This is the expected behaviour
and matches what gnome-contacts does. Keep the prefix/infix
weights in place for now.
https://bugzilla.gnome.org/show_bug.cgi?id=660912
Folks uses collection/set objects from libgee to store email addresses
associated with an individual. Unfortunately to extract addresses, parts
of libgee which are unusable from (introspected) bindings have to be
used[0], so add a helper method.
[0] in particular gee_iterator_get(), which is annotated as
"return: (transfer full): gpointer"
https://bugzilla.gnome.org/show_bug.cgi?id=660580
Match folks' name and nick fields, in addition to alias,
and look at email addresses in addition to im addresses.
This is more in line with what gnome-contacts does.
To match this new usage, rename the ALIAS_..._WEIGHT and
IM_..._WEIGHT constants to NAME_ and ADDR_, respectively.
https://bugzilla.gnome.org/show_bug.cgi?id=660580
The translate coordinates are calculated as the offset after the scale, so it
needs to be applied after the scale as well. This fixes random centering issues
in the UI.
https://bugzilla.gnome.org/show_bug.cgi?id=660674
For GIcons we use g_icon_to_string() in the key, but the function
will return NULL if the icon cannot be serialized. As a result,
all non-serializable GIcons of the same size end up with the same
cache key - an example for this are contacts with avatars, which
currently all end up with the same image.
To fix, opt out of caching for GIcons which cannot be serialized.
https://bugzilla.gnome.org/show_bug.cgi?id=660585
Setting up the framebuffers for transitions may fail, in which case
the material used for drawing is left uninitialized, so trying to
access it results in a crash.
Instead bail out in this case, which means that we won't paint
anything during the transition - still, drawing errors are better
than crashes ...
https://bugzilla.gnome.org/show_bug.cgi?id=659676
While we allow for arbitrary modifiers in keybindings, both the
alt-tab and ctrl-alt-tab popups close when ALT is not present in
the modifier mask, resulting in ALT being de-facto hardcoded.
Instead, pass the actual modifier mask when invoking the popups.
https://bugzilla.gnome.org/show_bug.cgi?id=645200
VPN secrets are currently unhandled by the UI code. To avoid
lengthy timeouts, bail out early with an error, so NetworkManager
falls back to the nm-applet agent directly.
https://bugzilla.gnome.org/show_bug.cgi?id=658484
Commit 0af108211c introduced a
regression where applications that appear in multiple categories were
duplicated in the "All Apps" list, because we switched from
uniquifying on desktop file ID to the GMenuTreeEntry.
Switch back to keeping the set of apps based on ID. To flesh this
out, we keep the ShellApp instance for a given ID around forever, and
when we're loading new contents, we replace the GMenuTreeEntry inside
the app. That means callers still get new data.
We still keep around the running app list, though we could just
recompute it from the app list now.
https://bugzilla.gnome.org/show_bug.cgi?id=659351
The apps and settings loading code duplicated the part to traverse a
GMenuTree. Unify this by adding a new function to return a flattened
set.
This will also be useful for a future change to how we store apps -
this way we can look at both the current set of apps and the new set.
https://bugzilla.gnome.org/show_bug.cgi?id=659351
Instead of doing complex computations in the shader just pass in the correct
fade area (taking padding, scrollbars and rtl into account) and just work
with that in the shader.
That fixes a bug where we would fade the scrollbar when padding is present.
https://bugzilla.gnome.org/show_bug.cgi?id=659159
The way the window dimmer shader is applied will cause rendering errors with
the rounded corners, invisible borders or shaped textures since it doesn't deal
well with the multitexturing used by the MetaShapedTexture. Use an off-screen
buffer to flatten the texture before being applied.
https://bugzilla.gnome.org/show_bug.cgi?id=659302
While I've been trying to make the GC kick in more often, I've decided
it's a better tradeoff to aggressively GC at "leisure", for multiple
reasons.
We can and should revisit this at a later time, but basically:
* The shell doesn't generate *that* much JS data - garbage collection
is very fast here.
* Long periods without GC mean we're not calling free() when we
could, which in turn makes heap fragmentation much worse.
* Ensuring the GC runs at idle makes it much less likely we'll take
a random large GC hit in the middle of an animation.
https://bugzilla.gnome.org/show_bug.cgi?id=659254
It was always taking the first .service.in file to create all .service
files: org.gnome.Shell.CalendarServer.service.in was the only one being
used.
https://bugzilla.gnome.org/show_bug.cgi?id=659194
Base ShellStack on StContainer rather than ClutterGroup, so that it
has StWidget-y features (and so we don't have to "cheat" in
shell_stack_allocate()). Implement navigate_focus() to only ever pass
focus into the top-most child, since doing otherwise would be
surprising.
https://bugzilla.gnome.org/show_bug.cgi?id=646934
The translation is taken from GTK+, so translations in the gnome-shell
domain are pointless - hide the string, so that it is not extracted
by xgettext.
In particular, document that you can ignore the get-preferred-*
signals if and only if you have a fixed width/height specified by some
other means.
https://bugzilla.gnome.org/show_bug.cgi?id=657986
This patch fixes the "apps vanish from alt-TAB bug".
If a "package system" rips away and possibly replaces .desktop files
at some random time, we have historically used inotify to detect this
and reread state (in a racy way, but...). In GNOME 2, this was
generally not too problematic because the menu widget was totally
separate from the list of windows - and the data they operate on was
disjoint as well.
In GNOME 3 we unify these, and this creates architectural problems
because the windows are tied to the app.
What this patch tries to do is, when rereading the application state,
if we have a running application, we keep that app around instead of
making a new instance. This ensures we preserve any state such as the
set of open windows.
This requires moving the running state into ShellAppSystem. Adjust
callers as necessary, and while we're at it drop the unused "contexts"
stuff.
This is just a somewhat quick band-aid; a REAL fix would require us
having low-level control over application installation. As long as
we're on top of random broken tar+wget wrappers, it will be gross.
A slight future improvement to this patch would add an explicit
"merge" between the old and new data. I think probably we always keep
around the ShellApp corresponding to a given ID, but replace its
GMenuTreeEntry.
https://bugzilla.gnome.org/show_bug.cgi?id=657990
This adds contacts search to shell, powered by libfolks.
Changes:
- Add Folks and Gee to the build system
- ShellContactSystem, a backend in C
- ContactDisplay, search frontend in JS
https://bugzilla.gnome.org/show_bug.cgi?id=643018
This commit introduces a "session type" for
gnome-shell. It essentially defines what
mode of operation the shell runs in
(normal-in-a-users-session mode, or at-the-login-screen mode).
Note this commit only lays the groundwork. Actually
looking at the key and appropriately differentiating
the UI will happen in subsequent commits.
https://bugzilla.gnome.org/show_bug.cgi?id=657082
shell_global_get() currently implicitly instantiates the shell
global singleton the first time it's called. This means there's
no opportunity to set construction-time properties on the singleton.
This isn't an issue yet, because there aren't any. We will need it
in the future, though, when we grow a --gdm-mode that gets exposed as
a property through the global singleton.
This commit adds a new _shell_global_init() function that must be
invoked before shell_global_get() can be called.
https://bugzilla.gnome.org/show_bug.cgi?id=657082
StAdjustment has some non-functional and unused animation vestiges
like the "elastic" property, st_adjustment_interpolate() and
st_adjustment_clamp().
This commit vacuums that stuff up so it doesn't tempt anyone into
trying to use it.
https://bugzilla.gnome.org/show_bug.cgi?id=657082
A network agent is a component that stores network secrets (like
wifi passwords) in the session keyring. This commit adds an
implementation of it to be used by the shell network dialogs. It
handles most of the keyring stuff, delegating the UI to upper layers.
https://bugzilla.gnome.org/show_bug.cgi?id=650244
Adds get_state() and ::state-changed signals, that replace connecting
and ready, as well as providing indication of when the object was closed
or the connection to PulseAudio failed.
https://bugzilla.gnome.org/show_bug.cgi?id=645708
During a state transition from running to not-running for
window-backend apps, it's possible we get a request for the icon.
Avoid asserting here and just return an empty image.
https://bugzilla.gnome.org/show_bug.cgi?id=656546
Adds methods to shell_global to allow taking screenshots
save the result into a specified png image.
It exposes three methods via shellDBus applications like
gnome-screenshot:
*) Screenshot (screenshots the whole screen)
*) ScreenshotWindow (screenshots the focused window)
*) ScreenshotArea (screenshots a specific area)
https://bugzilla.gnome.org/show_bug.cgi?id=652952
As danw points out,
"It's unique during the lifetime of the window, but reasonably likely to be
reused by another window after this one is destroyed. Using
meta_window_get_stable_sequence() might be better."
https://bugzilla.gnome.org/show_bug.cgi?id=648149
Since almost all of the callers of shell_app_activate were using the
default workspace (by passing -1), remove that parameter.
Add a new shell_app_activate_full() API which takes a workspace as
well as a timestamp; previously we might have been ignoring event
timestamps from elsewhere.
https://bugzilla.gnome.org/show_bug.cgi?id=648149
