Commit graph

175 commits

Author SHA1 Message Date
David Edmundson
7e8facc3fd [wayland] Use the new plasma virtual desktop protocol
Summary:
implement virtual desktop support for Wayland.
use the new virtual desktop protocol from D12820
The VirtualDesktopManager class needed some big change in order
to accomodate it, which is where most changes are.
Other than that, it's mostly connections to wire up
VirtualDesktopsManager and VirtualDesktopsManagement(the wayland protocol impl)

Depends on D12820
Other notable detail, is the client visibility updated to reflect the presence
of the client in the plasmavirtualdesktop.
(and the unSetDesktop concept)

Test Plan: used a bit a plasma session together with D12820, D13748 and D13746

Reviewers: #plasma, #kwin, graesslin, davidedmundson

Reviewed By: #plasma, #kwin, davidedmundson

Subscribers: hein, zzag, davidedmundson, kwin

Tags: #kwin

Maniphest Tasks: T4457

Differential Revision: https://phabricator.kde.org/D13887
2018-11-01 16:35:29 +01:00
Vlad Zagorodniy
769f2659dd [effects] Make Scale and Glide effects Wayland-friendly
Summary:
The Scale effect and the Glide effect have to animate only ordinary
windows(i.e. the ones that are considered to be apps).

On X11, in order to distinguish ordinary windows from combo box popups,
popup menus, and other popups, those effects check whether given window
is managed.

On Wayland, there is no concept of managed/unmanaged windows.

XDG Shell protocol defines 2 surface roles:
* xdg_toplevel;
* and, xdg_popup.

The former can be used to implement typical windows, the ones that can
be minimized, maximized, etc.

The latter can be used to implement tooltips, popup menus, etc. Thus,
that's a good criteria to filter popup windows.

CCBUG: 398100

Reviewers: #kwin, graesslin, davidedmundson

Reviewed By: #kwin, graesslin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D15117
2018-10-09 11:04:35 +03:00
David Edmundson
fc887ab907 Render GL Window decorations at the correct scale
Summary:
Under wayland we support high DPI putting by putting a separation
between the logical co-ordinate system and the resolution of rendered
assets.

When a window is on a high DPI screen, we should render at the higher
resolution.

Like the window scaling this handles any combination of a 2x scaled
decoration being rendered on a 1x screen or vice versa.

---
This patch is a bit different from the other scaling stuff. We have to
generate the quads *before* we have an updated texture with the new
scale. This means the scale isn't attached to the buffer like elsewhere.

That's why I added a property in TopLevel so there's still one canonical
source and things can't get out of sync.

BUG: 384765

Test Plan:
Crystal clear breeze and oxygen decos on my @2x display
Drag windows to attached @1x display, things still look OK when across 2
screens
Changing the scale of a screen updated the decos instantly

Reviewers: #plasma, graesslin

Reviewed By: #plasma, graesslin

Subscribers: graesslin, plasma-devel, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D8600
2017-11-01 17:59:11 +00:00
Martin Flöser
0ed609590b Add a dedicated X11EventFilter for forwarding property events to the effect system
Summary:
So far both Workspace and Toplevel emitted signals for every property
notify event on the root window and the respective Toplevel windows. The
signals were only used in EffectsHandlerImpl to forward to the effect
system in case the property which changed is registered by an effect.

This change introduces a dedicated event filter for this which is only
created in EffectsHandlerImpl in case an X11 connection is available. It
supports a restart of the X11 system.

The signals used so far are removed from Workspace and Toplevel.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7853
2017-09-25 20:36:45 +02:00
Eike Hein
e7e79124aa Set pid on the ClientConnection backing the PlasmaWindow surface.
Summary: Depends on D5747.

Reviewers: #plasma, sebas, graesslin

Reviewed By: #plasma, graesslin

Subscribers: kwin, plasma-devel, #kwin

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D5756
2017-06-12 01:09:22 +02:00
Luboš Luňák
f4de9618f8 revert the hackish overriding of Client::desktop() for session saving
The member variable is not what determines which desktop a window is on,
it's more like caching the state. Therefore trying to fake a new value
eventually leads to inconsistencies, e.g. having KWrite open with unsaved
changes on inactive desktop results in the window ending up on all desktops
after session save (both successful and cancelled).
This pretty much reverts the whole 7ce380497f that introduced this and also
a0a976885c that tried to fix some of the problems resulting from it.
The original problem of session saving of windows of inactive activities still
remains, to be fixed by another commit.

Differential Revision: https://phabricator.kde.org/D5613
2017-05-09 18:55:18 +02:00
Martin Flöser
a2d19c6b9d Revert "Set pid on the PlasmaWindow based on the client connection."
This reverts commit 262fb00b51.

CCMAIL: hein@kde.org
2017-05-08 16:46:16 +02:00
Eike Hein
262fb00b51 Set pid on the PlasmaWindow based on the client connection.
Summary: Depends on D5747.

Test Plan:

Reviewers: #plasma,sebas,graesslin

Subscribers: plasma-devel
2017-05-08 19:25:54 +09:00
Martin Gräßlin
1193b0da77 Initial support for popup window handling
Summary:
So far KWin did not properly handle popup windows. That is when a popup
surface got created and a click outside the surface happened KWin did not
send out the popupDone Wayland event.

This change makes KWin aware of whether a surface is a popup and tracks
through a new PopupInputFilter whether there are popup windows. In case
there are popups the new filter waits for mouse press events and cancels
the popups if the press does not happen on any surface belonging to the
same client. To quote the relevant section of the Wayland documentation:

    The popup grab continues until the window is destroyed or a mouse
    button is pressed in any other client's window. A click in any of the
    client's surfaces is reported as normal, however, clicks in other
    clients' surfaces will be discarded and trigger the callback.

So far the support is still incomplete. Not yet implemented are:
 * support xdg_shell popup windows
 * verifying whether the popup is allowed to be a popup
 * cancel the popup on more global interactions like screen lock or
   kwin effect

BUG: 366609
FIXED-IN: 5.10

Test Plan: Auto test and manual testing with QtWayland client

Reviewers: #plasma, #kwin

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D5177
2017-04-07 16:14:50 +02:00
Martin Gräßlin
fb59b05488 Add support for resize only borders on Wayland
Summary:
This change adds support for resizing outside the window decoration
(e.g. setting borders to NoSide or None).

To support this a new Toplevel::inputGeometry() -> QRect method is
added which exposes the geometry adjusted by the margins provided by
the decoration. This is checked in InputRedirection when finding a
Toplevel at a given position. The logic for figuring out whether the
event should go to the decoration or the window already handled the
situation correctly, so no further changes are needed.

BUG: 364607
FIXED-IN: 5.8.1

Reviewers: #kwin, #plasma_on_wayland

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D2787
2016-10-05 07:49:23 +02:00
Martin Gräßlin
996ee34e14 Remove the unredirect fullscreen windows functionality
Summary:
Rational: unredirect fullscreen windows is a weird beast. It's intended
to make fullscreen windows "faster" by not compositing that screen. But
that doesn't really work as KWin jumps out of that condition pretty
quickly. E.g. whenever a tooltip window is shown. KWin itself has a
better functionality by supporting to block compositing completely.
The complete code was full of hacks around it to try to ensure that
things don't break.

Overall unredirect fullscreen has always been the odd one. We had it
because a compositor needs to have it, but it never got truly integrated.
E.g. effects don't interact with it properly so that some things randomly
work, others don't. Will it trigger the screenedge, probably yes, but
will it show the highlight: properly no.

By removing the functionality we finally acknowledge that this mode is
not maintained and has not been maintained for years and that we do not
intend to support it better in future. Over the years we tried to make
it more and more hidden: it's disabled for Intel GPUs, because it used
to crash KWin. It's marked as an "expert" option, etc.

It's clearly something we tried to hide from the user that it exists.

For Wayland the whole unredirect infrastructure doesn't make sense
either. There is no such thing as "unredirecting". We might make use
of passing buffers directly to the underlying stack, but that will be
done automatically when we know it can be done, not by some magic is
this a window of specific size.

Test Plan:
Compiles, cannot really test as I am an Intel user who never
had that working.

Reviewers: #kwin, #plasma, #vdg

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D2180
2016-08-04 14:48:35 +02:00
Martin Gräßlin
7adf69dece Update Keyboard focus when the Surface of the active client changes
Summary:
For XWayland windows the window might be activated before the Wayland
Surface is set for it. Thus the keyboard focus is not passed to the
window. Only on the next activate after the window got created the
window got keyboard focus.

This change addresses this problem by emitting a signal from Toplevel
when the surface changes. The KeyboardInput listens to this signal
for the active client and updates keyboard focus again if the surface
changes. Thus keyboard focus is properly passed to XWayland windows.

Test Plan:
Test case which creates an X11 window is adjusted to verify
the condition.

Reviewers: #plasma_on_wayland, #kwin

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D2009
2016-06-26 16:07:31 +02:00
Andreas Hartmetz
bdf555bbcb Revert "Remove saving and loading (and client matching by) WM_COMMAND."
This reverts commit 2eac7634cc.

Cherry-picked from 5.6.

CCBUG: 362671
2016-06-23 20:59:43 +02:00
Martin Gräßlin
24bdfc6317 Make Toplevel::window() no longer virtual and introduce ::windowId()
Summary:
Toplevel::window() is the actual X11 window. This makes it difficult
to use as the generic identifier for both X11 and Wayland. The Wayland
ShellClient already had a windowId() which is now added to Toplevel as
a virtual method. On X11 (Toplevel default) it returns the window().

The method window() now returns XCB_WINDOW_NONE for classes without
the Toplevel::m_client, such as ShellClient. Thus it allows to properly
check whether we are on Wayland or X11.

The code is adjusted to use windowId where a generic id is needed and
to properly check whether the window is valid before using it where
a window() is used.

This also fixes at least one additional unknown issue in
Workspace::setActiveClient

where the windowId of a Wayland client was passed to X11.

Reviewers: #plasma

Subscribers: plasma-devel

Projects: #plasma

Differential Revision: https://phabricator.kde.org/D1527
2016-05-17 14:13:24 +02:00
Andreas Hartmetz
2eac7634cc Remove saving and loading (and client matching by) WM_COMMAND.
This legacy session management scheme using the WM_COMMAND property
seems to be called XSM. It is very, very legacy because it was
superseded by XSMP in 1993(!).

By inspecting ~/.config/session/kwin_[...] I could see that Firefox
still sets WM_COMMAND, but nothing else in a regular session with
some applications.
As one of the last applications to switch to XSMP session management,
I guess Firefox keeps doing that because it still needs to work on,
say, Solaris, anyway, so why not set WM_COMMAND on Linux as well.
The WM_COMMAND set by Firefox looks like "wmCommand8=firefox\s" in
the kwin session file. It doesn't actually contain a session
identifier. But then, Firefox only has one session per user anyway.

This goes together with commit 5f0ca1305db4a925 in plasma-workspace /
ksmserver to remove legacy session management support.

I've talked about my plan to do this on IRC with Martin so hopefully
it's okay to just do this now.
2016-01-09 03:53:47 +01:00
Martin Gräßlin
827486ff36 Introduce a Toplevel::clientContentPos() -> QPoint
This describes an additional offset for the client content. On X11
our client content position matches with the window - the window
decoration is part of the overall content coordinate system.

On Wayland the content is an own texture starting at 0/0. Thus a
mapping to texture coordinates will be required when server side
decorations are provided. The new information is used in the scene's
to adjust the rendering and generating of quads.
2015-12-18 16:41:49 +01:00
Martin Gräßlin
55bae74aae Specify inputTransformation in Toplevel
InputRedirection uses the inputTransformation() to pass to SeatInterface
for focused pointer surface. This prepares for proper input
transformation including scaling and rotation.
2015-12-18 15:37:46 +01:00
Bhushan Shah
450bbaafdc [wayland] Introduce property to identify lockscreen and inputmethods
This introduces Toplevel::isLockScreen() and Toplevel::isInputMethod(),
this can be used to allow only lockscreen/inputmethods to get input
events and shown when screen is locked.
2015-11-16 15:49:38 +05:30
Martin Gräßlin
996c828da3 [autotest/wayland] Add a test for quick tiling Wayland clients
Base test verifies the quick tile positions. No maximization or direct
state changes tested yet.

Required to have Toplevel and AbstractClient exported. Otherwise we
cannot use the SignalSpy.
2015-10-14 09:58:16 +02:00
Marco Martin
3f5bf65a9e Use the kwayland blur protocol in the blur effect
use the new blur protocol to fetch information about the
region of blur behind to apply to windows like Plasma::Dialog
REVIEW:125017
2015-09-02 14:43:44 +02:00
Martin Gräßlin
c56bbc0ddf Composite windows from a QOpenGLFramebufferObject
This change introduces a mechanism for internal windows to be rendered
to a QOpenGLFramebufferObject to be composited using the texture bound
to the FBO. This is useful for in-process rendering (e.g. QtQuick) and
at the same time bypassing the windowing system.

The OpenGL context of the QOpenGLFramebufferObject needs to be sharing
with the compositing OpenGL context.
2015-08-25 14:33:50 +02:00
Martin Gräßlin
3139dcd3b9 Drop cmakedefine HAVE_WAYLAND
Now a required build dependency.
2015-08-12 11:39:20 +02:00
Martin Gräßlin
01d805f193 [wayland] Pass appId to PlasmaWindow interface
For the appId we use:
* wl_shell windowClass for Wayland clients
* resourceName from window class for X11 clients

This is implemented by sharing the window class implementation in
Toplevel.

CCMAIL: hein@kde.org
2015-07-20 09:37:36 +02:00
Martin Gräßlin
97588faea2 [wayland] Add support for input shape
Toplevel provides the input shape forwarded from SurfaceInterface. The
shape is evaluated in InputRedirection when finding the Toplevel at a
given position.
2015-06-18 23:19:13 +02:00
Martin Gräßlin
11e0e75fb3 Add a signal Toplevel::windowHidden
Signal is connected in ScriptingModel together with windowShown.
2015-06-10 17:45:59 +02:00
Martin Gräßlin
5a98d8bbbd [wayland] Set depth in ShellClient depending on whether the Buffer has alpha
We need to set the depth in order to properly determine whether the
Surface has an alpha channel and whether blending needs to be enabled
for rendering.

For this a new method is introduced in Toplevel to set the depth. If
the depth changed in a way that the Toplevel gained or lost the alpha
channel a signal is emitted which implies that the hasAlpha property of
Toplevel is no longer constant.
2015-06-01 16:25:21 +02:00
Martin Gräßlin
45c1eddf4a Make Toplevel::window() virtual and implement in ShellClient
We need a shared window id in some way to e.g. properly support TabBox.
Though I do not like that the return value is xcb_window_t. This should
be either changed or a new "generic" windowId needs to be introduced.
2015-05-21 13:34:26 +02:00
Martin Gräßlin
b6f793090e Toplevel::setOpacity becomes virtual
It calls unconditionally into NETWinInfo.
2015-05-08 12:43:47 +02:00
Martin Gräßlin
8fad5830f1 Toplevel::windowRole becomes virtual and is copied to Deleted
Toplevel::windowRole accesses WinInfo unconditionally causing crashes
if we have a Toplevel subclass which doesn't use WinInfo. So let's
make it virtual and copy to Deleted.
2015-05-08 12:43:44 +02:00
Martin Gräßlin
92d06a8c4b Make Toplevel::opacity virtual and copy it to Deleted
Toplevel::opacity() accesses the WinInfo, but for a Wayland client
we won't have the opacity through the WinInfo, so let's have it as
a virtual method that a subclass can override. Also it needs to be
copied to Deleted to not have a Deleted of a Wayland client crash
because it accesses the not existing WinInfo.
2015-05-08 12:43:44 +02:00
Martin Gräßlin
9ca992a329 [wayland] Drop methods on Toplevel to send input events
No longer needed as InputRedirection sends input events directly
through the SeatInterface. In addition this drops the dependency on
xtest.
2015-03-17 10:20:20 +01:00
Martin Gräßlin
659c416879 [wayland] Handle damage events from SurfaceInterface
On Wayland we get the damage from the SurfaceInterface instead of
using a damage handle. This change ensures that the damage handle
interaction is only used on platform X11, while on Wayland we get
the damage from the SurfaceInterface directly.
2015-03-17 10:20:19 +01:00
Martin Gräßlin
07c972b6d4 [wayland] Add a SurfaceInterface to Toplevel
Adds the SurfaceInterface identified by the surface id we get from
Xwayland. This allows in an easier way to map a Toplevel to a
Wayland surface and will also be useful for Wayland clients.
2015-03-17 10:08:27 +01:00
Martin Gräßlin
e463905f04 Add Workspace::findToplevel
Like findClient and findUnmanaged, just a little bit more generic.
Toplevel::findInList got adjusted to support it.
2015-03-17 10:08:27 +01:00
Martin Gräßlin
e7019d9545 [xwayland] Add support for WL_SURFACE_ID
When XWayland associates a Wayland surface with an X window it
sends a WL_SURFACE_ID client message to the window manager.

KWin listens for this client message in Toplevel and provides it
as a member in Toplevel.

This requires KWin to actually start a Wayland server (and XWayland)
to make proper use of the information.
2015-03-17 10:03:04 +01:00
Martin Gräßlin
770c723c61 Split Toplevel::getSkipCloseAnimation into two parts 2015-01-21 09:25:14 +01:00
Martin Gräßlin
b27d3d20e7 Split Toplevel::getWmClientLeader in two parts
First part (fetch) just creates the Xcb::Property while the
second part (read) reads the property. This allows to better
schedule the commands in Client::manage to reduce the number of
roundtrips. This reduces the time spent for fetching the client
leader property by about half a millisecond on my system.
2015-01-21 09:25:14 +01:00
Kai Uwe Broulik
2153174dc0 Add OnScreenDisplayLayer which is placed even ontop of the active fullscreen window
It is to be used for volume change feedback and similar confirmation popups

REVIEW: 121300
2015-01-02 12:11:54 +01:00
Martin Gräßlin
1747fde18b Toplevel does not inherit from KDecorationDefines any more
As an intermediate step Client inherits from KDecorationDefines.
2014-12-02 11:31:07 +01:00
Martin Gräßlin
98a5c4e050 Allow Client to disable the rendering of DecorationShadow
For maximized and fullscreen windows we don't want the shadow to be
renderer at all.
2014-07-25 14:02:27 +02:00
Martin Gräßlin
0030eb7f84 Initial import of support for new KDecoration2 based decorations
NOTE: this is not working completely yet, lots of code is still ifdefed
other parts are still broken.

The main difference for the new decoration API is that it is neither
QWidget nor QWindow based. It's just a QObject which processes input
events and has a paint method to render the decoration. This means all
the workarounds for the QWidget interception are removed. Also the paint
redirector is removed. Instead each compositor has now its own renderer
which can be optimized for the specific case. E.g. the OpenGL compositor
renders to a scratch image which gets copied into the combined texture,
the XRender compositor copies into the XPixmaps.

Input events are also changed. The events are composed into QMouseEvents
and passed through the decoration, which might accept them. If they are
not accpted we assume that it's a press on the decoration area allowing
us to resize/move the window. Input events are not completely working
yet, e.g. wheel events are not yet processed and double click on deco
is not yet working.

Overall KDecoration2 is way more stateful and KWin core needs more
adjustments for it. E.g. borders are allowed to be disabled at any time.
2014-07-25 14:02:26 +02:00
Martin Gräßlin
b039a07f4d Toplevel::vis becomes Toplevel::m_visual and is xcb_visualid_t
Only usage of the ::vis was the visualid, so have this as the member
instead of the XVisual*.
2014-05-05 08:09:10 +02:00
Martin Gräßlin
b18c672e36 Fix compilation with gcc-4.9
Looks like one needs to include <functional> if one uses std::function.

Compilation verified with:
* gcc-4.8
* gcc-4.9
* clang-3.2
2014-04-29 07:49:54 +02:00
Martin Gräßlin
b45eeae352 [Xcb::Wrapper] Introduce a Property and StringProperty Wrapper subclass
The Xcb::Property can wrap the xcb_get_property call and provides
convenient access methods to read the value of the reply with checks
applied. For this it provides a templated ::value method for reading a
single value or reading an array. There's also a ::toBool and
::toByteArray which performs the conversion directly with default values
for the type and format checks.

Xcb::TransientFor is changed to be derived from Property instead of
Wrapper directly, so that the reading of the property value can be
shared.

Xcb::StringProperty is a convenient wrapper derived from Property to
handle the reading of a string property providing a cast to QByteArray
operator. This replaces the ::getStringProperty from utils. Though the
separator functionality from ::getStringProperty is not provided as that
is only used in one function and handled there.

All the custom usages of xcb_get_property or getStringProperty are
replaced to use this new wrapper. That simplifies the code and ensures
that all properties are read in the same way.

REVIEW: 117574
2014-04-17 07:41:33 +02:00
Martin Gräßlin
93e5ebac63 Try to wait for DESTROY_NOTIFY before releasing an Unmanaged
So far the Unmanaged got released after an XCB_UNMAP_NOTIFY. This event
gets created after xcb_unmap_window or after xcb_destroy_window. In the
latter case the window is already distroyed and any of KWin's cleanup
calls will cause a BadWindow (or similar) error.

The idea to circumvent these errors is to try to wait for the
DESTROY_NOTIFY event. To do so the processing of the release is slightly
delayed. If KWin gets the destroy notify before the delay times out the
Unamanged gets released immediately but with a Destroy flag. For this a
new enum ReleaseToplevel is introduced and Unmanage::release takes this
as an argument instead of the bool which indicated OnShutdown. Also this
enum is added to Toplevel::finishCompositing so that it can ignore the
destroyed case and not generate an error.

REVIEW: 117422
2014-04-16 13:32:11 +02:00
Martin Gräßlin
c63e3533f4 Get Toplevel::resourceName() and ::resourceClass() from NETWinInfo
It's provided by the NETWinInfo, no need to keep an own implementation.
To keep compatibility with existing KWin code using the window class or
resource it's always converted to lower.

In addition a notify signal Toplevel::windowClassChanged is added and
emitted from the event handler whenever the WM2WindowClass property is
set.

REVIEW: 117496
2014-04-14 08:46:38 +02:00
Martin Gräßlin
acdff6ea52 Drop static getStringProperty wrappers in Toplevel
The methods Toplevel::staticWmCommand and Toplevel::staticSessionId were
both only used from one method and just wrapping an invocation to
getStringProperty.

REVIEW: 117474
2014-04-10 18:10:58 +02:00
Martin Gräßlin
f1f6d6eea8 Get windowRole from NETWinInfo instead doing it ourself
NETWinInfo provides windowRole if NET::WM2WindowRole is added to the
properties2. Thus KWin doesn't need to monitor and fetch itself, but
can just wrap the data provided by NETWinInfo.

In addition a signal is added to Toplevel whenever the window role
changes.

REVIEW: 117470
2014-04-10 15:57:00 +02:00
Martin Gräßlin
bc0a9cb53a [kwin] Use std::find_if and lambda functions for Workspace::findClient
Instead of passing the macro based Predicate to findClient it now
expects a function which can be passed to std::find_if.

Existing code like:
xcb_window_t window; // our test window
Client *c = findClient(WindowMatchPredicated(window));

becomes:
Client *c = findClient([window](const Client *c) {
    return c->window() == window;
});

The advantage is that it is way more flexible and has the logic what
to check for directly with the code and not hidden in the macro
definition.

In addition there is a simplified overload for the very common case of
matching a window id against one of Client's windows. This overloaded
method takes a Predicate and the window id.

Above example becomes:
Client *c = findClient(Predicate::WindowMatch, w);

Existing code is migrated to use the simplified method taking
MatchPredicate and window id. The very few cases where a more complex
condition is tested the lambda function is used. As these are very
local tests only used in one function it's not worthwhile to add further
overloads to the findClient method in Workspace.

With this change all the Predicate macro definitions are removed from
utils.h as they are now completely unused.

REVIEW: 116916
2014-03-25 15:17:11 +01:00
Martin Gräßlin
12a4923959 [kwin] Use std::find_if and lambda functions for Workspace::findUnmanaged
Instead of passing the macro based Predicate to findUnmanaged it now
expects a function which can be passed to std::find_if.

Existing code like:
xcb_window_t window; // our test window
Unmanaged *u = findUnmanaged(WindowMatchPredicated(window));

becomes:
Unmanaged *u = findUnmanaged([window](const Unmanaged *u) {
    return u->window() == window;
});

In addition an overload is added which takes the window id to cover
the common case to search for an Unmanaged by its ID. The above example
becomes:
Unmanaged *u = findUnmanaged(window);

The advantage is that it is way more flexible and has the logic what
to check for directly with the code and not hidden in the macro
definition.
2014-03-25 15:17:10 +01:00