EffectsHandlerImpl starts to monitor DBus for the screen being locked and
provides this information to the Effect system by allowing them to ask
whether the screen is currently locked and by emitting a signal when the
screen gets locked/unlocked.
This information is needed to ensure that no private data is shown on the
screen. The following effects are adjusted:
* taskbar thumbnails
* thumbnail aside
* mouse mark
* screen shot
BUG: 255712
FIXED-IN: 4.11
REVIEW: 108670
Corners are still ours (it's a valid use case to still be able to switch
window through e.g. Present Windows even when running a fullscreen app).
How is it done? An Edge can be blocked and does no longer trigger if it
is blocked. For WindowBasedEdges the edge windows get unmapped in the
blocking case and mapped again when the blocking condition is no longer
valid.
The blocking is so far connected to:
* changes of active window
* changes of fullscreen windows
Whenever one of the events occurs it is checked whether there is:
1. an active client
2. it is fullscreen
3. on the same screen as the edge
If this is the case the edge will be blocked, otherwise unblocked.
BUG: 271607
FIXED-IN: 4.11
For each edge an additional "approach" area window is created. When the
mouse enters this approach window, it gets unmapped and a mouse polling
interval is started. If the mouse leaves the approach area again, the
window gets mapped again and the mouse polling is stopped.
During the approaching a signal is emitted with a factor in [0.0,1.0] to
describe how close the mouse is to the edge. 0.0 means far away, 1.0
means triggering the edge. This signal is passed to the effects to allow
using this information. E.g. to provide a glow corner effect or to make
use of it in the cube animation effect to start the animation on desktop
switch.
In fact it already used to be a Singleton as there is just one object
hold by the Singleton Workspace. So let's make it a proper Singleton
following our kind of standard approach of having a ::create factory
method called from Workspace ctor and a ::self to get to the singleton
instance.
The main difference is that the activation of an edge is no longer
broadcasted to all effects and scripts, but instead a passed in slot of
the Effect/Script is invoked.
For this the EffectsHandler API is changed to take the Effect as an
argument to (un)reserveElectricBorder. As callback slot the existing
borderActivated is used.
In addition the ScreenEdge monitors the object for beeing destroyed and
unregisters the the edge automatically. This removes the need from the
Effect to call unregister in the dtor.
BUG: 309695
FIXED-IN: 4.11
This rewrite is mostly motivated by the need to handle multi screen
setups correctly. That is have edges per screen and not for the combined
geometry. Also porting from XLib to XCB has been a motivation for the
rewrite.
The design of the new ScreenEdge handling is described in the
documentation of ScreenEdges in screenedge.h.
In addition the following changes have been performed:
* move configuration from Options to ScreenEdge
* add screen edge information to Workspace::supportInformation (obviously
replaces what had been read from Options)
* have Workspace hold a pointer to ScreenEdges instead of an object
* forward declaration of ScreenEdges in workspaces.h, this explains the
seemingly unrelated changes of just another include in some files
BUG: 290887
FIXED-IN: 4.11
The comment says it all: update all settings which can be done through
the compositing KCM. Years ago screen edges was in the composite KCM, but
it no longer is. So there is no need to update the edges when the
compositing settings changes.
Quick tiling/maximizing of Clients is completely independent of the
screen edges functionality. That is it determines the borders itself.
Nevertheless there has been some code still around which interacted with
the screen edges each time a window was moved. This code is completely
useless.
No effect has ever used these methods and there is no reason why an
effect should use them. Reserve/unreserve is sufficient as the effect
will be notified anyway.
when eg. vertically maximizing a cinemascope video in mplayer
it would horizontally exceed the (16:9) screen, so this
case is translated to a full maximization (effectively binding
the window into screen dimensions)
also, when restoring such video from a horizontal maximization
the restore would usually keep the height (thus breaking the
window aspect) so pass geom_restore -> restore through adjustedSize()
REVIEW: 108702
Use xcb to create and manage the X11 backend of Outline. In addition the
used background pixmaps are rendered with XRender instead of using a
QPainter on a QPixmap. This is done because QPixmap is no longer bound to
an X Pixmap.
To create the XRender Picture the available functionality from
kwinxrenderutils is used. To be able to use it in KWin core the compile
option to build without XRender is removed for kwinxrenderutils, but
still supported for effects.
Obviously the port to XCB is not complete as xremderutils itself is still
on XLib.
REVIEW: 108642
The idea behind this class is to relieve the developer from having to
call xcb_destroy_window once it is no longer needed. That is having a
RAII approach to windows.
In addition the class provides some simple method wrappers for the most
common use cases inside KWin:
* map
* unmap
* setGeometry - basically a moveResizeWindow
* ...
First XRender effect which gets ported over. Therefore required bits are
added to CMakeLists.txt.
Port to xcb is luckily rather straight forward. Though the QPixmap usage
needs to be replaced by xcb_pixmap_t together with a XRenderPicture.
Follow-up to cbb7f57; the code built on Linux despite the lack of required
includes most likely because netdb.h ends up indirectly including
sys/types.h and sys/socket.h.
In effects it's obvious that compositing is enabled, so specifying the
translucent element is no problem.
In tabbox a context property "compositing" is injected which decides
whether "translucent" or "opaque" elements should be used. Here the
translucent elements are only used if the Blur effect is available - for
this a new Effect::Feature Blur is introduced and in addition it is
tested whether the theme provides the translucent element.
Also the masking is adjusted to ensure that only the shadow is not
blurred.
Reason for this change is that Plasma theme seems not always to pick up
whether compositing is used when used from inside KWin. It does not cover
the Desktop Change OSD which uses PlasmaCore.Dialog and there we cannot
(yet) inject that we use compositing.
Overall I'm quite unhappy with this patch and I do hope we can fix it in
the proper place in the lifetime of 4.10 and revert this patch.
CCBUG: 311995
REVIEW: 108438
