Commit Graph

90 Commits (ca1f66b1df24f0e3daa53472ecfcce4e2d88b112)

Author SHA1 Message Date
Vlad Zagorodniy 684b4b635e Use more traditional doxygen style
Summary:
So far we were following a bit unique and rare doxygen comment style:

    /**
     * Contents of the comment.
     **/

Doxygen comments with this style look balanced and neat, but many people
that contribute to KWin don't follow this style. Instead, they prefer
more traditional doxygen comment style, i.e.

    /**
     * Contents of the comment.
     */

Reviewing such changes has been a bit frustrating for me (so selfish!)
and for other contributors.

This change switches doxygen comment style in KWin to a more traditional
style. The main reason for doing this is to make code review process easier
for new contributors as well us.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22812
2019-07-29 22:06:19 +03:00
Vlad Zagorodniy 8af2fa73dc Run clang-tidy with modernize-use-override check
Summary:
Currently code base of kwin can be viewed as two pieces. One is very
ancient, and the other one is more modern, which uses new C++ features.

The main problem with the ancient code is that it was written before
C++11 era. So, no override or final keywords, lambdas, etc.

Quite recently, KDE compiler settings were changed to show a warning if
a virtual method has missing override keyword. As you might have already
guessed, this fired back at us because of that ancient code. We had
about 500 new compiler warnings.

A "solution" was proposed to that problem - disable -Wno-suggest-override
and the other similar warning for clang. It's hard to call a solution
because those warnings are disabled not only for the old code, but also
for new. This is not what we want!

The main argument for not actually fixing the problem was that git
history will be screwed as well because of human factor. While good git
history is a very important thing, we should not go crazy about it and
block every change that somehow alters git history. git blame allows to
specify starting revision for a reason.

The other argument (human factor) can be easily solved by using tools
such as clang-tidy. clang-tidy is a clang-based linter for C++. It can
be used for various things, e.g. fixing coding style(e.g. add missing
braces to if statements, readability-braces-around-statements check),
or in our case add missing override keywords.

Test Plan: Compiles.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, apol, romangg, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22371
2019-07-22 20:03:22 +03:00
Fabian Vogt fcad1198ce Merge branch 'Plasma/5.16' 2019-07-10 11:05:50 +02:00
Fabian Vogt f6b1e028da Merge branch 'Plasma/5.12' into Plasma/5.16 2019-07-10 11:04:04 +02:00
Fabian Vogt c3c030d8b5 Fix creation of kdeglobals if /etc/xdg/kdeglobals present
Summary:
If /etc/xdg/kdeglobals exists but ~/.config/kdeglobals
does not (like on the first start of kwin_wayland), it did not notice
changes to kdeglobals.
This lead to KWin using the wrong color scheme for the window decoration
on the first login, which also could not be changed without a session restart.

Test Plan: Cleared ~ and logged in again, title bar color is now correct.

Reviewers: #plasma, romangg

Reviewed By: #plasma, romangg

Subscribers: sitter, broulik, rikmills, kwin, plasma-devel

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22238
2019-07-10 11:03:41 +02:00
Vlad Zagorodniy cccb3456f3 Use QColor::darker/lighter instead of QColor::dark/light
Summary: QColor::dark() and QColor::light() are obsolete since long time ago.

Reviewers: #kwin, apol

Reviewed By: apol

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D22360
2019-07-10 02:03:10 +03:00
Roman Gilg 2c088894b4 [autotests] Fix decoration input test
Since d51b8dc093 the test fails on CI, apparently because we test with
Breeze default settings, which is no borders now and we can move a bit into
the window geometry and still be on the border if borders exist, otherwise
not.

For now fix it by checking if there are borders or not and then test
accordingly. But long-term we should test both cases and besides not rely on
external decorations for our test, instead use a fake specific for our
integration testing.
2019-06-07 14:48:45 +02:00
Roman Gilg d51b8dc093 [decorations] Let KDecoration plugins recommend a border size per default
Summary:
This is an alternative solution to T8707 and in comparision to D13276 a less
drastic change to KWin's default behavior.

Instead of changing the border size default for all KDecoration plugins by
switching the default from border size Normal to None introduce new
functionality, which allows a KDecoration plugin to recommend a border size in
its metadata. By default KWin listens for these recommendations and sets the
border size accordingly.

If there is no metadata recommending a border size, KWin falls back to the
current setting of Normal sized borders.

A user is able to override the recommendations from the KCM, which has been
extended accordingly.

Test Plan: Manually with adjusted metadata of Breeze.

Reviewers: #kwin, #plasma, #vdg, ngraham

Reviewed By: #vdg, ngraham

Subscribers: hpereiradacosta, filipf, anemeth, davidedmundson, abetts, graesslin, ngraham, zzag, kwin

Tags: #kwin

Maniphest Tasks: T8707

Differential Revision: https://phabricator.kde.org/D13284
2019-06-06 22:24:45 +02:00
Vlad Zagorodniy 82b3e2a63a Resurrect show tooltips option
Summary:
In KDE 4, there was a very handy option to disable decoration tooltips.
Decoration tooltips were lost in transition to KDE Plasma 5, and so
the option.

Given that decoration tooltips were brought back to KDE Plasma 5, "Show
decoration button tooltips" option can be still useful for people(like me)
who may wish to disable them because of personal preference.

Reviewers: #kwin, broulik, mart

Reviewed By: #kwin, mart

Subscribers: ngraham, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D19152
2019-03-05 00:38:55 +02:00
Laurent Montel 7b4ef76de6 Remove deprecated method 2019-03-01 08:15:31 +01:00
Vlad Zagorodniy 9a68cbd9b1 Don't destroy DecorationRenderer in setup/finish compositing
Summary:
Currently, KWin/Wayland crashes when the compositor is reinitialized.
The reason for that is ShellClient's DecorationRenderer gets destroyed
when the scene is already gone, thus there is no current OpenGL context.
Client works around that issue by destroying scene-specific DecorationRender
in finishCompositing. Such a workaround could be applied to ShellClient
as well, but it would make code more confusing because DecoratedClientImpl
also tries to destroy DecorationRenderer.

A better approach would be to notify DecoratedClientImpl that
compositing is about to be finished, so it can destroy the decoration
renderer when the scene is still alive. This not only fixes the
previously mentioned issue in ShellClient, but also makes code a little
bit tidier.

Test Plan:
Start Plasma on Wayland session, change any compositor settings (e.g.
animation speed).

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D18921
2019-02-20 15:09:37 +02:00
Marco Martin 23dc03f734 support decorations from lookandfeel
Summary:
the Lookand Feel kcm already applies decorations to kwin, allow to
read them as defaults for the case of distribution customization
where a different lnf with a different deco is wanted

Test Plan: tested to start kwin with a different lnf which loads an aurorae decoration

Reviewers: #plasma, #kwin, davidedmundson

Reviewed By: #plasma, #kwin, davidedmundson

Subscribers: davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D18261
2019-01-16 10:40:54 +01:00
Vlad Zagorodniy 80da18a143 [decorations] Emit DecorationSettings::fontChanged signal
Summary:
No one emits DecorationSettings::fontChanged signal, so if you change
the window title font, then titlebars might look differently after reboot.

Currently, there are two places where we can emit that signal:
- in KDecoration library itself;
- and in KWin.

Because we would need to listen for a Plasma specific D-Bus signal, the
latter option is preferable.

Surprisingly, KWin's implementation of DecorationSettingsPrivate already
reacts to refreshFonts D-Bus signal (even though indirectly), so all
what we have to do is get the current window title font in
SettingsImpl::readSettings, and if it's different from the previous one,
emit DecorationSettings::fontChanged signal.

BUG: 400980
FIXED-IN: 5.15.0

Test Plan:
* Increased the size of the window title font, titlebars got bigger;
* Decreased the font size, titlebars got smaller.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D16908
2018-11-15 22:08:41 +02:00
David Edmundson 29a49f8656 [wayland] Use pending maximize mode in decoration updates
Summary:
The change to make maximize mode asynchronous featured the comment

>Things are a bit complex with borders. Technically we
>shouldn't update them till we get a response, but we also need to have
>the correct geometry of the full size window in our request. For now
>they behave as before, updating when we request the change.

We call setNoBorder when we request the geometry but decoratedClient
also checks the maximise mode, in order to follow the scheme above we
need this to operate on the requested state not current state.

X is unaffected.

This fixes the borders being restored correct after maximize/restore.

Test Plan:
Chose a theme with visible borders
Maximised a window and back
They restored

Reviewers: #kwin, zzag

Reviewed By: #kwin, zzag

Subscribers: zzag, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D15991
2018-10-07 17:52:34 +01:00
Martin Flöser c44adda40f Hide decoration tooltip when the decoration gets destroyed
Summary:
BUG: 394977
FIXED-IN: 5.13.1

Test Plan: Manual testing

Reviewers: #kwin, #plasma

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D13299
2018-06-10 09:18:51 +02:00
Алексей Шилин 5a14b6a6a2 Improve tooltips behavior
Summary:
Window buttons tooltips used to appear on hover immediately. As
the result, they mostly appeared when not needed e.g. when user
was closing a window, or when the mouse pointer slightly touched
a button while being moved elsewhere.

This commit changes the tooltips behavior to WakeUp-FallAsleep
approach used by Widgets.

BUG: 392765
FIXED-IN: 5.13

Reviewers: #kwin, graesslin, broulik, #plasma

Reviewed By: #kwin, graesslin, #plasma

Subscribers: zzag, broulik, kwin, hein

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D12404
2018-04-22 23:44:39 +03:00
Martin Flöser 8245a74b31 Make it possible to compile 5.12 branch with a kdecoration from master
Summary:
KDecoration has two new pure virtual methods. Due to that one cannot
build KWin in the stable branch. This makes bug fixing rather cumbersome
as one also needs to switch the kdecoration branch.

This rather unusual change for a stable branch improves the
compatibility by adding the new virtual methods without doing anything
and without marking them as override, so that the code can compile with
a kdecoration from 5.12 and a kdecoration from master.

Test Plan: 5.12 branch compiles with kdecoration master branch

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D10296
2018-02-07 19:43:53 +01:00
Martin Flöser 04d8434a09 KWin: tooltips
Summary:
BUG: 383040

KDecoration part of the patch:
https://phabricator.kde.org/D7246

Reviewers: graesslin

Reviewed By: graesslin

Subscribers: cfeck, graesslin, luebking, broulik, kwin, #kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D9294
2018-01-18 19:59:17 +01:00
Marco Martin 6b6875166f export org.kde.appmenuview
Summary:
drop the global settings and export the service wich will activate
the appmenu kded

Test Plan:
adding the menu button makes new apps export it,
removing it makes new apps using the interlal one again

Reviewers: #kwin, #plasma, davidedmundson

Reviewed By: #plasma, davidedmundson

Subscribers: ngraham, davidedmundson, broulik, plasma-devel, kwin

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D9216
2017-12-12 15:06:31 +01:00
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
David Edmundson 7e6721ece0 Scaled decorations in QPainter mode
Summary:
Under wayland we support high DPI putting by putting a separation
between the logical co-ordinate system and the resolution of rendered
assets.

I didn't include window decorations in the previous wayland scaling
patchset. They were drawn them at a standard resolution, which is
implicitly scaled up.

This uses the Qt scaling, meaning oxygen and breeze (and others) get
perfect high DPI support with zero client changes.

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

CCBUG: 384765

Test Plan:
export KWIN_COMPOSE=Q
Had two screens of different scales
It was the right size on both (as before)
Was super-sharp on the fancy screen

Reviewers: #plasma, hetzenecker, graesslin

Reviewed By: #plasma, graesslin

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

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D8504
2017-10-30 13:27:48 +00:00
Martin Flöser 23ef40e638 Move the X11 Decoration Renderer into the X11 standalone platform
Summary:
Not needed except for X11/non-composited usage, so should be in the
plugin instead of core.

Platform API is extended to create a decoration renderer.

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7444
2017-09-01 17:49:32 +02:00
Martin Flöser 054d923411 Move SceneXRender into a plugin
Summary:
First step for loading the compositor Scenes through plugins. The general
idea is that we currently needlessly pull in all the Scenes although only
one will be used.

E.g. on X11 we pull in QPainter, although they are not compatible. On
Wayland we pull in XRender although they are not compatible.

Furthermore our current Scene creation strategy is not really fault
tolerant and can create situations where we don't get a compositor. E.g
on fbdev backend the default settings won't work as it does not support
OpenGL.

Long term I want to tackle those conceptional problems together:
we try to load all plugins supported by the current platform till we have
a scene which works. Thus on Wayland we don't end up in a situation where
we don't have a working compositor because the configuration is bad.

To make this possible the switch statement in the Scene needs to go and
needs to be replaced by a for loop iterating over all the available
scenes on the platform. If we go there it makes sense to replace it
directly with a plugin based approach.

So this is a change which tackles the problem by first introducing the
plugin loading. The xrender based scene (as it's the most simple one)
is moved into a plugin. It is first tried to find a scene plugin and only
if there is none the existing code is used.

Test Plan: Tested all scenes

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D7232
2017-09-01 17:42:28 +02:00
Martin Flöser 64da6c8d1e Replace Workspace::slotWindowQuickTileFoo by a quickTileWindow with argument
Summary:
Thanks to std::bind we don't need that many different slots to setup the
global shortcut connections. Instead we can have one shared
implementation which takes the argument and passes it to the window.

To support std::bind arguments in kwinbindings the initShortcut method
and dependencies are adjusted as well as a new macro is added.

As I don't want to include abstract_client.h in workspace.h a new enum
is created for the quick tiling flags used in Workspace. This caused a
larger refactoring as the change to an enum class also caused quite some
changes.

Test Plan: Affected test cases still pass

Reviewers: #kwin, #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D6783
2017-07-29 17:40:03 +02:00
Kai Uwe Broulik 93938d60b8 Restore global menu support
This brings back global menu support in KWin.
The DBusMenu infrastructure is different that we just read the DBus service name and
menu object path from the windows rather than passing around window IDs on DBus which
won't work on Wayland.

Differential Revision: https://phabricator.kde.org/D3089
2017-01-11 10:21:03 +01:00
Martin Gräßlin eed4bf32ae Cache the clientSize in DecoratedClientImpl
Summary:
So far whenever the window geometry changed the widthChanged and
heightChanged signals were emitted even if they did not change.
E.g. while moving a window this resulted in the signal being emitted
after every step, although from decoration point of view nothing
changed.

The decoration performed costly tasks like re-layout the window buttons.

With this change the client size is cached and the widthChanged signal
is only emitted if the width actually changed. Same for heightChanged.

This results in the decoration only re-layouting the buttons if the
window is resized horizontally. All other geometry changes no longer
result in a re-layout.

Reviewers: #kwin, #plasma

Subscribers: kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D2389
2016-08-10 14:22:19 +02:00
Allen Winter 31f067ede2 pedantic fixes 2016-07-16 13:14:44 -04:00
Martin Gräßlin 04c3998571 Emit the maximizedChanged and friends signals in ShellClient like in Client
This is an update to c95ddb7102 and
implements the emit of maximized changed in deocration like on Client.

Overall the code looks like it should be merge better together with
Client.

Reviewed-By: kbroulik
2016-06-09 14:37:32 +02:00
Martin Gräßlin c95ddb7102 Pass the maximized signal to DecoratedClient
Summary:
From the famous category: "How could that code ever have worked".

Maximized state changes were never passed to window decorations. For
X11 windows the decoration updated the state nevertheless, for Wayland
windows the state did not get updated, thus a maximized window had
borders and was shown with a not maximized button.

Reviewers: #kwin, #plasma_on_wayland

Subscribers: plasma-devel, kwin

Tags: #plasma_on_wayland, #kwin

Differential Revision: https://phabricator.kde.org/D1805
2016-06-09 13:35:38 +02:00
Martin Gräßlin 00fe5ec401 [decorations] Don't recreate Renderer once the Compositor is destroyed
If we get a compositingToggled because the Compositor is going down we
don't need to recreate the Renderer as KWin as a whole is going down.

Thus we disconnect the compositingToggled connection when the Compositor
is about to be destroyed.
2016-05-23 09:28:27 +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
Martin Gräßlin 8d7d51e4ef Merge branch 'Plasma/5.6'
dont_crash_aurorae_destroy_deco.cpp is adjusted to Platform.
2016-05-12 16:43:12 +02:00
Martin Gräßlin 6cd0d5a54a Delay maximize button click to next event cycle
Summary:
The delay to next cycle dance is needed for Aurorae. Maximizing a
window can result in the decoration being destroyed, in which case
QtQuick can trigger a crash.

A test case is added to simulate the situation and ensure that maximize
still works also after the change.

BUG: 362772
FIXED-IN: 5.6.5

Reviewers: #plasma

Subscribers: plasma-devel

Projects: #plasma

Differential Revision: https://phabricator.kde.org/D1586
2016-05-11 13:45:14 +02:00
Martin Gräßlin 5646313c2c Add an explicit dependency to Breeze to find decoration plugin
Summary:
KWin needs the plugin id of the breeze decoration plugin. Instead
of hard coding that it's now resolved through an optional dependency.
If the optional dependency is not available, the default is adjusted
to aurorae/plastik.

Reviewers: #plasma

Subscribers: plasma-devel

Projects: #plasma

Differential Revision: https://phabricator.kde.org/D1344
2016-04-12 08:54:50 +02:00
Martin Gräßlin 757523a324 Use kwinApp()->config() instead of KSharedConfig::openConfig()
That way all over kwin we can inject a custom config in the autotests.
2016-01-29 11:24:18 +01:00
Thomas Lübking 1c344c16d9 emit shadeChanged before calculating unshaded size
Otherwise the old (shaded) border sizes will be invoked, causing
a shrinkage of the window

BUG: 357669
FIXED-IN: 5.6
REVIEW: 126671
2016-01-18 22:50:13 +01:00
Martin Gräßlin 7ed4b5ed1a Include abstract_client.h instead of client.h in decorationbridge.cpp 2015-12-18 16:41:49 +01:00
Martin Gräßlin 2d7477359e DecorationBridge::recreateDecorations operates on AbstractClient 2015-12-18 16:41:49 +01:00
Martin Gräßlin 5cef26d275 [wayland] Add support for ServerSideDecorationManager
We announce support for it and depending on whether we have a plugin
or not set the default mode to Server or None.

When a decoration interface is created it gets installed on the
ShellClient. But there it isn't properly used yet as we don't have
support for decorations in ShellClient yet.
2015-12-18 16:41:49 +01:00
Martin Gräßlin 60b09586ef [decorations] Schedule repaint for renderer on AbstractClient
We need to search in AbstractClient instead of just Client.
2015-12-18 16:41:49 +01:00
Martin Gräßlin cb400d7128 DecorationBridge creates Decoration for AbstractClient 2015-12-18 16:41:49 +01:00
Martin Gräßlin 6270ea35a2 DecoratedClientImpl switches from operating on Client to AbstractClient 2015-12-18 16:41:49 +01:00
Martin Gräßlin 1758db337f DecoratedClientImpl::client returns AbstractClient* instead of Client* 2015-12-18 16:41:49 +01:00
Martin Gräßlin a730b5d2f6 Merge branch 'Plasma/5.4' 2015-10-20 07:35:01 +02:00
Martin Gräßlin 10ad9262a1 [decorations] Delay closeWindow to next event cycle
Once again our famous "closing glxgears crashes Aurorae".

BUG: 346857
FIXED-IN: 5.4.3
REVIEW: 125704
2015-10-20 07:33:33 +02:00
Martin Gräßlin a002442224 [decorations] Bring back option NoPlugin
The option NoPlugin allows to disable window decoration plugins. It
used to exist with the old decoration library but got unfortunately
lost during the switch.

This change brings back the option and also allows runtime changes
of the option.

REVIEW: 124708
2015-08-12 10:52:46 +02:00
Martin Gräßlin 09880d1267 [decorations] Introduce logging category for decorations 2015-07-31 13:13:46 +02:00
Martin Gräßlin 2cd6efa409 Switch decoration loading to KPluginLoader::findPluginsById
Removes a dependency to sycoca cache, but requires the plugin
metadata in the json file to use the new format.
2015-07-07 08:06:34 +02:00
Martin Gräßlin 23862e512d Move implementation of ::palette to AbstractClient
Includes moving of the colorscheme and DecorationPalette related
functionality.
2015-05-08 12:43:47 +02:00
Mika Allan Rauhala 9636922827 Fix DecorationPalette loading when kdeglobals doesn't exist
When kdeglobals doesn't exist, QStandardPaths::locate() for it returns
an empty string, so the check in previous fix doesn't work in this case.

This change sets m_colorScheme properly in this case and also creates an
empty kdeglobals(needed because QFileSystemWatcher can't monitor
non-existing files) so kdeglobals can be reloaded if it is later
populated.

REVIEW: 123399
2015-04-22 12:31:17 +02:00