Before, we looked up application data in several ways; the ShellAppSystem
exported just application ids (though it parsed the .desktop files internally),
and we'd create a Gio.DesktopAppInfo object (reparsing the desktop file again),
wrapping that inside a JavaScript AppInfo class, and finally the AppDisplay
would again parse the .desktop file to get the categories.
Also, to look up applications by id previously, we traversed the entire
menu structure each time.
Some qualities such as the NoDisplay flag were not easily exposed in the old
system. And if we wanted to expose them we'd have to change several different
application information wrapper classes.
All in all, it was quite suboptimal.
The theme of this new code is basically "just use libgnome-menus". We do
not call into Gio for app lookups anymore. The new Shell.AppInfo class
is a disguised pointer for the GMenuTreeEntry item.
To fix the caching, we keep a simple hash table of desktop id -> ShellAppInfo.
Rework the previously extant Application category code to display
in the expanded list. Add a "Frequent" category which corresponds
to the most_used_apps, and selected by default.
Instead of adding the background and shadow as expanded items to
the results/details panes as fixed, we slave the background/shadow
sizes to the results using notify::allocation.
Also clean up the code for sizing the details pane, using a common
function which adjusts its x position in one place.
The split between this.actor and this.nonOverlayActor in chrome.js is
annoying, but aside from actually subclassing ClutterGroup (which
would have to be done from C), all of the other possibilities are
annoying too.
Add a new icon button in button.js that fades in/out with a short delay when the mouse enters/leaves its parent. Use it for the information button of genericDisplay.
This converts GenericDisplay to totally dynamic layout, where
we display as many items as we can, and the rest cleanly overflow
into pages.
For now, remove multi-column; to readd this, we can pack multiple
display items into a single ShellOverflowList item.
It looks funny to have the "more running apps area" there as a gap
when empty and dragging to it is an unintuitive way to remove stuff
from the favorites list, in any case, so just hide the area when
empty.
http://bugzilla.gnome.org/show_bug.cgi?id=587720
Pack everything we don't want to expand with BigBoxPackFlags.NONE;
this fixes the More... button for the docs section ending up with
a gap underneath it.
Since the More... button for the docs now ends is right at the bottom
of the dash, add some padding to it.
http://bugzilla.gnome.org/show_bug.cgi?id=587720
Widgets should be horizontally centered in the sidebar. Else they look
out of place (in particular the clock and the applications widgets).
Due to little tricks with the sidebar starting out of the screen to
hide rounded corners, this implies playing with paddings. The patch
decreases the widgets padding from 4 to 2 pixels, removes additionnal
padding on the right, and adds an out-of-screen padding to the widget
box to make up for the negative horizontal position of the sidebar.
The width of a Group actor ends up including the width of its hidden children,
so we were getting a reactive object as wide as the details pane that was
blocking the clicks to the workspaces underneath it even when the details
pane was actually hidden.
Not making the dash Group actor reactive solves this problem. However, we
have to make individual parts of the dash reactive instead so that the clicks
are not passed to the transparent actor underneath them. That transparent
actor is used for dismissing the additional panes when the user clicks over
the workspaces area.
Clutter no longer allows using a clone of an actor that is not a part of
the scene graph. This is what used to happen when we created a clone for
the icon of the item that was being dragged, and then closed the More panes
with the original item, removing the icon from the scene graph. This was
also when happened when the user hit Esc while dragging, which prompted the
overlay to close, removing the original icon from the scene graph.
Rename getIcon() methods to createIcon() to better reflect on the fact that
a new icon is created each time the method is called (we do use cache in
some cases).
Remove a stray log message in overlay.js
Fixes http://bugzilla.gnome.org/show_bug.cgi?id=585490
and http://bugzilla.gnome.org/show_bug.cgi?id=585489
The new class AppWell implements the application favorite well
in the Dash component. The previous AppDisplay remains for use
in the More... mode now.
Delete DEFAULT_APPLICATIONS; this is now in GConf.
Rename getMostUsedApps to getTopApps since we now have the
idea of explicit favorites.
Delete some GenericDisplay-related calls from overlay related
to the seletion - we'll reimplement keyboard nav in a more
coherent way later.
AppResults and DocResults classes were identical with an exception of
the display class they used and the text label for the results. Merged
them into a single ItemResults class that takes these two additional
arguments.
Move the activate and select functionality inside the callbacks for
'button-release-event' signals of the display item and the information
button correspondingly. This way it is more obvious that this is an
event handling code that needs to return a boolean value for whether
the signal has been fully handled by the actor.
Update the code for checking a display item under the pointer to expect
the item itself rather than its child to be returned by stage_get_actor_at_pos().
This code is now used to display an information button when an item is
drawn under the pointer, so update the comment accordingly.
Add a comment about the use of the transparent background to catch clicks
in the workspaces area when the dash panes are being displayed and dismiss
the dash panes.
Set opacity for the background to 0 instead of using a transparent background
color so that Clutter optimizes the drawing of the background actor.
Fix up the comments about the horizontal gradient code and use 8x1 texture
instead of 8x8.
Make sure the values we assign to the three-stop horizontal gradient
require the use of the three stop gradient, with the middle value not being
right between the side values.
Display a pane with search results for both applications and documents
automatically when a search string is entered.
Allow viewing search results for the individual section when More link
for applications or documents is clicked.
Move text labels for the applications and documents sections into the
respective classes.
Enable typing in the search box and display results in the results pane.
This means that the user has to open the details pane for applications
or documents to view the results for now.
Connect Enter to launch the seleted item.
Connect Escape to clear search, remove results and details panes,
or exit overlay.
The results sections no longer include a label on top of them, so the
height of that label needs to be subtracted when specifying the height
for the sections. This ensures that display controls are positioned
correctly on the bottom of the section.
Clicking the information button for an item selects it (i.e. highlights it)
and shows details about the item.
Clicking the rest of the item area launches it.
Item does not become draggable if the dragging is started over the information
icon (i.e. if the user presses the information icon, but releases elsewhere).
Make sure we emit "activated" signal and close the overlay when an item from
one of the results displays is launched.
Use an (i) icon supplied by Jeremy for the information link and display
it on hover. Make sure it is positioned nicely and the text doesn't
overlap with it.
Pop-up previews are not part of the new design and interfere with the information link.
Make sure details display for applications has the appropriate width set.
Make sure at most one item is selected in the overlay and we always show
a details pane for the selected item.
Improve the positioning of the search box.
Remove a duplicate variable DASH_PAD and use DASH_SECTION_PADDING everywhere instead.
A blue selected item color fits better with the new color scheme than a green one.
Only one item should be selected across all the displays we are showing.
Display a pane with item details, such as a full image previews, when an item is single clicked.
Add a placeholder information link that shows up when an item is moused over.
Display all recent documents in the results pane, in addition to the first
few displayed in the main dash. All documents can be viewed with the help
of a paging control.
Display the results pane above the workspaces. The results pane is somewhat
transparent and has a blue gradient background. The dash pane is slightly
transparent and also has a blue gradient background.
The results pane shows up when a More control is clicked. It disappears when
a Less control is clicked, an area outside of the dash area is clicked,
an item starts being dragged, or the overlay mode is exited.
Add shell_global_create_horizontal_gradient() to shell-global.[ch]
Increase the priority of the idle for updating work area and struts
to META_PRIORITY_BEFORE_REDRAW. This prevents it from being starved
by a constantly-redrawing client.
http://bugzilla.gnome.org/show_bug.cgi?id=585500
We achieve this with two changes:
- Move the Shell.get_thumbnail call in DocInfo from _init
to getIcon, so that it isn't executed until it's actually
needed.
(If caching the output of said call permanently is desired
we could still do it on the first getIcon invocation, but
I don't believe this is necessary given that looking up an
already generated icon is pretty fast and this also gives
us an updated icon in case the file changes.)
- More importantly, we ommit the get_thumbnail call in case
the URI doesn't start with file://. Looking up, for example,
an http:// URI is very slow, and doesn't give us an icon anyway.
http://bugzilla.gnome.org/show_bug.cgi?id=586539
The list of all applications was based on the items that show up in
the menus, and might not have contained all applications returned
by the AppMonitor for the most used applications request. One example of
such an application was Evince. This resulted in a crash when an
application we did not prepare the info for was returned as one of the
matches by the AppMonitor, so we now include all applications returned
by the AppMonitor in the list, in addition to the ones from the menus.
Also mark apps as stale when we catch a "changed" signal from the AppMonitor
to ensure that the cache is refreshed.
With commit a3d35af444 variable
itemInfo in js/ui/appDisplay.js was changed to a new object
(AppInfo from js/misc/appInfo.js) but some of the code in
js/ui/appDisplay.js wasn't updated accordingly. This commit
fixes that and makes the search box in the overlay usable
again.
This lets us share the recent-app-tracking, recent-file-tracking, and
icon-drawing code between the overlay and the sidebar, without the
sidebar having to poke into AppDisplayItem and DocDisplayItem's guts.
Currently function shell_get_thumbnail_for_recent_info located in
src/shell-global.c is used to get thumbnails for recently used files.
However, it only works if you have a GtkRecentInfo object for the file,
even though the thumbnail generation code doesn't depend on it. This commit
renames the function to shell_get_thumbnail and makes it generic so that it
just takes two strings: a filename and a mimetype.
- clutter_actor_get_transformed_position()/size() return floats
- clutter_stage_get_actor_at_pos() takes a pick mode
- ClutterTimeline no longer has a concept of frames
- ClutterUnit is now replaced by float
- cogl_texture_new_from_data() signature changed
http://bugzilla.gnome.org/show_bug.cgi?id=585013
This removes the border and padding and aligns the box to the top. Perhaps we
could push the padding down into the active area of the icon since it does look
a bit nicer with it.
http://bugzilla.gnome.org/show_bug.cgi?id=583139
The animation time for the overlay is a bit long. We're using 0.5 second.
From my quick tests of "another system" it takes about half that time to
animate. The other system feels about right.
http://bugzilla.gnome.org/show_bug.cgi?id=583572
The code here is significantly cleaner if we use the data Metacity
already has cached and validated, rather than talking to X directly.
Also some preparatory work for extending the monitor API by
clarifying the name of the (current) main entry point.
Change the "overlay" actor to be a group of 4 actors that we can
rearrange so as to have a hole in the middle (to cover up the whole
screen except for the highlighted icon). For non-iconified windows, we
still highlight them the old way (raising them above the overlay),
because we don't want square highlights around shaped windows.
Make the indicator in the pop-up move faster.
Quickly fade in the "overlay" window when starting, rather than
showing it abruptly. Destroy it right away rather than just hiding it
when the AltTabHandler is destroyed.
Fix the font size to be the same as the "Activities" button.
Fix a warning when tabbing past an iconified window.
To avoid loading applications from two different systems, use
ShellAppSystem solely. This unifies the initial load and the
reload.
Extend ShellAppSystem to also load settings/preferences, and
ensure they appear in the search.
Drag and drop was not working since the (non-reactive, invisible)
chrome group was on top of most of the screen. Explicitly set
a 0x0 size on that group to resolve the problem.
The goal of the workspace view is to identify and select windows. Transparency
results in the blending of the window and the background (and icons on the
desktop). I think the transparency is counterproductive.
We used it in the initial mockups kind of as a lark - it wasn't well thought
out.
http://bugzilla.gnome.org/show_bug.cgi?id=582647
Add a ShellTextureCache class which loads (and can cache)
pixmap->texture conversions. This fixes a problem with the
async code in ClutterTexture that it was lower priority
than animations, and also ensures we're really only
loading these pixbufs once in the icon case.
Adds an explicit "chrome" layer for the panel (and later the sidebar),
managing the input region and struts for them, and hiding them when
fullscreen windows are present or the user enters the overlay.
http://bugzilla.gnome.org/show_bug.cgi?id=581771
In addition to pressing the Activities button, the overlay can be entered
by pressing the System key or Alt+F1. We want the button to look pressed in
in these cases too.
Rather than having main.js manage this, put it into overlay.js, and
have the overlay object emit signals that other code can watch to do
things when the overlay is showing/shown/hiding/hidden.
Using appExec for the last application that registered the document was failing
in certain cases, such as for the Open Office for which the application
execution string is being registered as "soffice %u" in ~/.recently-used.xbel.
In general, using the default application for the mime type seems to be a more
predictable way to open documents. We still fall back to using the appExect
for the last application if the default application for a given mime type was
not found.
Previously we forced all windows to shrink at least as much as the
workspace itself did. Now we allow to shrink by a smaller amount (or
not at all) if they'll still fit within their allotted slot.
http://bugzilla.gnome.org/show_bug.cgi?id=571192
Try to fix all places where we accidentally used foo_bar instead
of fooBar for function names, function parameters, and variables.
(Lucas Rocha pointed out one example.)
http://bugzilla.gnome.org/show_bug.cgi?id=581141
This is a fairly simple implementation, not all that different from
plain metacity's. Further improvements could be made to
js/ui/altTab.js in the future.
http://bugzilla.gnome.org/show_bug.cgi?id=580917
Do a better job at describe the problems in docDisplay.js related
to not reading the desktop files and finding StartupNotify=true.
Also, fix a typo.
http://bugzilla.gnome.org/show_bug.cgi?id=580658
main.js: Add create_app_launch_context() with code from appDisplay;
additionally set the workspace on the launch context to the current
workspace so that the application launches on the right workspace
even if the user switches before the app starts.
appDisplay.js docDisplay.js: Use Main.create_app_launch_context()
http://bugzilla.gnome.org/show_bug.cgi?id=580658 (Reported by Igor Vatavuk)
Now code can call Main.addShellActor(actor) to declare that that actor
is part of the shell, and so it should (a) be protected by wm struts, and
(b) be part of the stage input area, and then that code automatically
deals with updating if the actor changes size or visibility.
Use the actual image from the file for expanded mode previews for image files. Use the pixbuf loader to set the appropriate image size as soon as the image is prepared, but before it is loaded, to avoid loading large images. Apply the pixbuf orientation setting so that the image is properly rotated. Preserve the original size of the image if its dimensions are smaller than the space available.
Make sure we provide the accurate available width for the details actor. This
width has to exclude the padding and border width. Also provide the available height for the details actor.
The overlay looks nicer with the root window pixmap drawn on the
background. It is scaled up to twice the size, with positioning
based on the rule of thirds.
The sideshow animations shown when entering or leaving the
overlay and toggling the extended view were implemented by
Marina Zhurakhinskaya. They replace the old method of having a
black rectangle behind the workspaces that partly covers the
sideshow during transitions.
configure.ac: Add gdk-x11, clutter-x11 and clutter-glx modules.
overlay.js: Add a root window pixmap actor, make sideshow width
definitions more logical, replace the way the sideshow
animates when entering or leaving the overlay.
workspaces.js: Remove the backdrop, add helper functions for the
overlay transitions.
shell-global.[ch]: Add a method that creates an actor displaying
the root window pixmap and returning clones of it.
ShellAppMonitor now depends on gmenu to load menus.
Use the menu data from ShellAppMonitor to show a menu list.
GenericDisplay implementations can now have a sidebar area. We
handle keystrokes such as left/right explicitly.
Some internal API changes to account for the fact that a display
can have another filter in addition to the search.
The panel show/hide changes broke things if window restacking occurred
while the overlay was active. Now instead of having the panel set the
input area itself, main.js just watches whether or not the panel is
visible, and updates things itself (taking the modal state into
account as well).
http://bugzilla.gnome.org/show_bug.cgi?id=576903
The diagonal arrangement currently used in the overlay when there are
more than 6 windows is hard to read and hides most of the previews.
Both of these issues are fixed by arranging the windows in a grid pattern.
http://bugzilla.gnome.org/show_bug.cgi?id=576269
Change the overlay behavior to display more details about an item on single
click and launch it on double click.
When the item is clicked on in the expanded view, the details are shown in the
area on the right that is allocated for showing details. The details pop-up is
not shown for the item that was clicked on, but it is shown for other items on
hover and for the item that was clicked if the mouse pointer is moved back to
it.
Both hovering and single clicking results in the details pop-up being shown in
the regular view. (Single clicking actually doesn't do anything in the regular
view, but the details pop-up is shown due to hovering within the time it takes
to perform a single click.)
The overlay now uses 3 columns on the wide screen for displaying items in the
expanded view. This allows keeping the size of the details area the same for
expanded and regular views.
Add shell_get_button_event_click_count() to shell-global.[hc] to retrieve
the click count for button press and release events.
Add selectedItemDetails public variable actor to the generic display to
contain the details of the selected item and be shown in the overlay when
it is in the expanded view mode.
Fix the bug when the sideshow section would loose selection in the expanded
view if it did not have any items, and would not regain it if it was repopulated
with some items (e.g. when the search string changes).
The sideshow no longer takes overlay parent and width as constructor arguments.
It is added to the overlay inside the overlay code and manages its own width
instead (which is ok, since it is pretty much a private class within overlay).
Clean up the way selection is moved when an item is launched in order to have
selection on click and activation on double click be implemented in a similar
fashion. An unneeded _activatedItem variable in generic display was removed,
and the selected item is activated instead when necessary. The flow of processing
signals changed so that generic display no longer waits for the selection from
a different sideshow section to be removed before selecting an item that was
clicked on. This removed the need for doActivate() function.
The panel looks nicer when it is drawn as a semi-transparent gradient
above the background color.
shell-global.[ch]: Add a function that creates vertical gradient actors.
panel.js: Change the look of the panel and put the tray in a framed box.
overlay.js: Extend the overlay background to behind the panel.
Because we can't set the stage input area to a non-rectangular shape,
we don't allow the panel to be partially overlapped; it is always either
on top, or else completely hidden.
Showing previews after a delay allows the user to move the mouse around
the screen without triggering constant pop-ups.
Make sure we remove the pop-up when the user hits Escape and redisplay
the pop-up if we are updating the section results due to a change in space
allocated for it.
Rename protected variable _hasPreview to _showPreview in order to not have
the naming conflict with a new private variable _havePointer, which we
name in first person.
For development and demonstration purposes, it's neat to be able to
record a screencast of gnome-shell without any external setup.
Built-in recording can also give much better quality than is possible
with a generic desktop recording, since we hook right into the paint
loop.
src/shell-recorder.[ch]: A general-purposes object to record a Clutter
stage to a GStreamer stream.
src/shell-recorder-src.[ch]: A simple GStreamer source element (similar
to appsrc in the most recent versions of GStreamer) for injecting
captured data into a GStreamer pipeline.
src/test-recorder.c: Test program that records a simple animation.
configure.ac src/Makefile.am: Add machinery to conditionally build
ShellRecorder.
tools/build/gnome-shell-build-setup.sh: Add gstreamer packages
to the list of required packages for Fedora.
js/ui/main.js: Hook up the recorder to a MetaScreen ::toggle-recording
keybinding.
http://bugzilla.gnome.org/show_bug.cgi?id=575290
The pop-up previews have larger images than the item displays, which is
particularly nice when we are displaying thumbnails for documents. The
previews are also at least as wide as is required to fit the item title
on one line and the item description inside them is wrapped. Therefore
they act as tooltips showing the full title and description text.
The preview updates when the item under the mouse pointer changes. Changes
in overlay.js ensure that we keep the sideshow on top when the
workspaces are not being animated so that we can find the item over which the
pointer is located.
The preview is removed when the item it is shown for starts being dragged.
_hideInProgress variable was added to represent the state of the overlay
when the code for hiding it was already triggered. This fixes the error
which was happening when the code for hiding the overlay was triggered
multiple times (for example by the user clicking the Activities button
twice when exiting the overlay).
When a window is added while overlay is being exited (e.g. because
some application was launched), we don't want to add that window to
the workspace's window clones. Previously, the window clone was added
and an animation to place the windows to their overlay workspace view
positions was triggered, which resulted in the wrong animation being
shown and an abrupt change in window positions when the actual workspace
was shown.
Add a boolean argument to two _positionWindows() calls that were missing
an argument.
was browsing exiting results
This is most noticeable when viewing results in xephyr, and then opening
a document in your regular session. But it could also be noticeable if
downloading a new file completes while the user is in the overlay.
This patch also moves the call to _displayMatchedItems() to _redisplay
instead of making it in both _setDefaultList() and _doSearchFilter().
Sliding the workspaces back in when the user starts dragging an item in the
expanded display mode allows the user to select a workspace in which the item
should be launched and stay in the overlay mode.
This patch adds code to dnd.js that handles notifying actors when a drag item is being dragged over them. Overlay code uses such notification to unset expanded display modes and trigger sliding in of the workspaces.
If the drag is cancelled the drag item snaps back to its source or disappears at the original position of its source if the source is no longer displayed.
Add a display control that contains page numbers for the result
pages and is shown in the expanded results view. All of the page selection and
switching is handled by the GenericDisplay which exposes a displayControl
actor, which is then displayed by the Sideshow.
We had problems because the More links were reacting on press but
other elements were reacting on release. (Often the link would trigger
*and* an item.) Just connecting to ::button-release-event on
ClutterText gives a stuck grab (since ClutterText gets the press
but not the release), so we need more complicated code that we
encapsulate into a new class.
link.js: new "pseudo-widget" that implements a clickable link.
overlay.js: Use Link.Link for the More.. links
http://bugzilla.gnome.org/show_bug.cgi?id=573323
Add black backgrounds to each item display, as well as a black
background with a full-screen height to the workspaces display.
Update the expanded item display up front when 'More...' is clicked, and
reveal the additional items gradually when the other components of the overlay
slide away.
Raise the documents display up gradually as the applications display above it slides away.
Reverse the process when 'Less...' is clicked. First, gradually cover up additional items by other components, and then update the displays to contain fewer items.
tools/build/gnome-shell.modules: Point at master branch of Clutter (0.9)
and make gobject-introspection a dep of Clutter.
configure.ac src/Makefile.am: Use Clutter-0.9
js/ui/button.js js/ui/genericDisplay.js js/ui/overlay.js js/ui/panel.js
js/ui/runDialog.js js/ui/workspaces.js src/shell-status-menu.c:
Use ClutterText instead of ClutterLabel and ClutterEntry
js/ui/workspaces.js js/ui/genericDisplay.js: Use ClutterClone instead
of ClutterCloneTexture
src/shell-global.[ch]: Add Shell.get_event_key_symbol() to workaround
unaccessibility of clutter_key_event_symbol() to use.
js/runDialog.js js/overlay.js: Use Shell.get_event_key_symbol() as
appropriate.
Put sideshow sections into boxes so that we can slide them out with a single 'easeOutQuad' transition.
Handle expanding the documents section in the same fashion as we handle expanding the applications section.
Place "More..." labels inside Big Boxes with x_align set to Big.BoxAlignment.END so that we don't have to position them manually.
Before the run dialog was changing the focus, but because we were
only setting it once, we ended up with nothing focused after the run
dialog was destroyed.
mutter_plugin_get_windows() returns NULL at plugin-initialization time,
so we have to wait until idle time to figure out which workspaces are
being used and remove the unused ones.
http://bugzilla.gnome.org/show_bug.cgi?id=571091
Previously we were stripping all whitespace. Instead, just strip leading+trailing
whitespace, split the remaining search into individual terms which we search
for independently.
Items are grouped by the number of terms they match, then sorted
alphabetically.
Divide the screen into a grid and use it to determine the layout of the overlay components in a more consistent manner.
Remove the 'Add workspace' control and slide the workspaces
display to the side without scaling it when switching to the 'More' mode.
Automatically removes tweens on destroyed actors, and provides
additional "animation started/stopped" callbacks (eg, for tracking
whether or not to show window clone titles)
Since tweener can't do multiple tweens on the same property, it
calls an overwrite callback for any existing tweens when a new
tween is added for the same property. Here we use the overwrite
callback to tell mutter that the effects are done.
mode. When this control is clicked, documents display section slides down,
workspaces display slides to the side, and a multi-column applications view is
presented to the user. "More' control is replaced with a 'Less' control. When
the 'Less' control is clicked a default overlay view is restored.
Clean up positioning of the components of the overlay sideshow
and the items within generic item displays.
svn path=/trunk/; revision=179
Previously we were only doing this check for switch-workspace, but it
makes sense to do it for all transitions, since they won't be visible
anyway, and they might interfere with the overlay's operations by moving
windows around unexpectedly.
svn path=/trunk/; revision=177
- Don't let the user grab a moving window or we'll get dueling tweens.
- Update _overlappedMode each time _positionWindows is called
svn path=/trunk/; revision=170
* Make updating of the clone title more of a state-machine - instead
of showing/hiding/creating/raising the title all over the code, have a
single Workspace._updateCloneTitle() method that looks at state bits and
decides if the clone should be hidden or shown, and updates the
stacking and position.
* Move code to positioning of windows within a workspace in the overlay
modeto a new method Workspace._positionWindows()
* Add Workspace.addWindow()/removeWindow() to add and remove windows
from the workspace on the fly. (Triggered manually: we still don't
handle external changes to windows when the overlay is up.)
* Hook up mouse-dragging for window actors and add a
::window-dragged signal to Workspace
* Connect to ::window-dragged for each workspace, compute the new
workspace, move it the window there, and animate everything into the
new position. Snap back to the old location if the window didn't move.
http://bugzilla.gnome.org/show_bug.cgi?id=568753
svn path=/trunk/; revision=164
