Client used to have dedicated methods for different icon sizes instead
of combining all pixmaps into one QIcon. This resulted in various parts
of KWin having different access to the icons:
* effects only got one pixmap of size 32x32
* decorations only got the 16x16 and 32x32 pixmaps combined into a QIcon
* tabbox could request all icon sizes, but only as pixmap
Now all sizes are available in one QIcon allowing to easily access the
best fitting icon in a given UI.
This looks mostly like dead code. The change got only emitted by the
KCMKeyboard on save. In ancient times this seems to have caused to
re-read the global shortcuts. Code got commented out during KDE4 times
and after several code refactors all that was left of it was discarding
the user actions menu.
Replaces one usage of KGlobalsettings. It might be a good idea to
move the connect into libkdecoration or into the options as it looks
like there is no need to reconfigure everything just because the fonts
changed.
Instead we generate an export header for kdeinit_kwin and use it
to declare the KWIN_EXPORT. With this change our libs don't include
any KDE4Support headers any more. One step closer to no KDE4Support.
Replaced by KWIN_VERSION_STRING where useful. Support information
no longer contains the SC version number. We have to see whether
there will be a useful framework based platform information.
The intersection of rects are calculated twice without need.
The function QRectF::intersected() calculate and returns the intersection.
If there are no interesection, the returned QRectF is empty.
If the intersected QRectF is equal to QRectF argument, it contains the QRectF argument.
Reviewed in: https://git.reviewboard.kde.org/r/114036/
Adds a new force rule to specify the color scheme to use on the window
decoration. The scheme is stored by the name of the .colors file name.
So for Oxygen.colors the value is Oxygen.
When loaded the scheme is located and the full path to the colors file
is used. This is because the X property also uses the full path.
When the menu opens we update the QPalette to the one used by the
Client and thus providing a more common look and feel if the window
specified a custom color scheme.
The ::palette() in KDecoration and KCommonDecoration returns the
QPalette the decoration should use for the decorated window. The
call delegates into the bridge and KWin core might provide a special
QPalette for a given Client depending on the _KDE_NET_WM_COLOR_SCHEME
property.
The X property _KDE_NET_WM_COLOR_SCHEME can be set on a window and
specifies the absolute path to a .color file describing the color
scheme of the managed client.
The Client reads this property and creates a QPalette from it. If
the property is not set or the value is incorrect, the Client uses
KWin's default palette.
The idea behind this property is to allow an application with a
custom color scheme to tell KWin which color scheme the window
decoration should use. So that the window looks as a solid pattern
again.
This is a workaround fo QTBUG-34898 and affects the VirtualBox driver
and SandyBridge Mobile. OpenGL compositing is just not possible and
crashes as soon as there is anything rendered with QtQuick. This change
should be reverted once the Qt bug is fixed.
To nevertheless use OpenGL one can as always use the KWIN_COMPOSE env
variable, though this will result in crashes. An alternative is to set
QT_OPENGL_NO_SANITY_CHECK which forces Qt into using the threaded
rendering. At least for Sandybridge this seems to be a workable solution
as it's only causing flickering in fullscreen and KWin doesn't use any
fullscreen QtQuick elements.
With QtQuick2 it's possible that the scene graph rendering context either
lives in an own thread or uses the main GUI thread. In the latter case
it's the same thread as our compositing OpenGL context lives in. This
means our basic assumption that between two rendering passes the context
stays current does not hold.
The code already ensured that before we start a rendering pass the
context is made current, but there are many more possible cases. If we
use OpenGL in areas not triggered by the rendering loop but in response
to other events the context needs to be made current. This includes the
loading and unloading of effects (some effects use OpenGL in the static
effect check, in the ctor and dtor), background loading of texture data,
lazy loading after first usage invoked by shortcut, etc. etc.
To properly handle these cases new methods are added to EffectsHandler
to make the compositing OpenGL context current. These calls delegate down
into the scene. On non-OpenGL scenes they are noop, but on OpenGL they go
into the backend and make the context current. In addition they ensure
that Qt doesn't think that it's QOpenGLContext is current by calling
doneCurrent() on the QOpenGLContext::currentContext(). This unfortunately
causes an additional call to makeCurrent with a null context, but there
is no other way to tell Qt - it doesn't notice when a different context
is made current with low level API calls. In the multi-threaded
architecture this doesn't matter as ::currentContext() returns null.
A short evaluation showed that a transition to QOpenGLContext doesn't
seem feasible. Qt only supports either GLX or EGL while KWin supports
both and when entering the transition phase for Wayland, it would become
extremely tricky if our native platform is X11, but we want a Wayland
EGL context. A future solution might be to have a "KWin-QPA plugin" which
uses either xcb or Wayland and hides everything from Qt.
The API documentation is extended to describe when the effects-framework
ensures that an OpenGL context is current. The effects are changed to
make the context current in cases where it's not guaranteed. This has
been done by looking for creation or deletion of GLTextures and Shaders.
If there are other OpenGL usages outside the rendering loop, ctor/dtor
this needs to be changed, too.
