Review Request 115137: Provide information about the active screen in KWindowSystem

[Martin Gräßlin]

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This is an automatically generated e-mail. To reply, visit:
https://git.reviewboard.kde.org/r/115137/
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(Updated Jan. 31, 2014, 2:01 p.m.)


Review request for KDE Frameworks, kdewin and kwin.


Changes
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* changed from active screen to active output
* added a small test application which places an override redirect window in the center of the active output and updates whenever the signal is emitted.


Repository: kwindowsystem


Description
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The rational for these changes is based on the discussion in http://article.gmane.org/gmane.comp.kde.devel.plasma/27579/

Plasma needs to know which is the active screen and so far only KWin knows it, so we need to make everybody aware of it.

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Add convenient wrapper for active screen to KWindowSystem

A method is added to get the identifier of the active screen as a
QString and a signal whenever the active screen changes. This method
is only provided for X11, on Windows and Mac a null QString is returned
as the identifier.

Add an active screen property to NETRootInfo

The active screen is intended to be set by KWin to the active screen
it's using. This can be used by a Client to manually position e.g.
override redirect windows on the active screen. It's intended as a help
for multi-screen setups where a Client can only do guesses on where to
position e.g. a notification window.

It's a KDE specific extension as property _KDE_NET_ACTIVE_SCREEN and
announced in the supported properties.


Diffs (updated)
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  tests/activeoutputtest.cpp PRE-CREATION 
  tests/CMakeLists.txt ce68cc505a69ea9a3cf645e9ae587bd89abe1648 
  src/netwm_p.h 41792b330f7405034f4d51fb31a4de5dd674b6d0 
  src/netwm_def.h 8b1ccb8bd731aefb9559c8f2b450337b0312ed4d 
  src/netwm.cpp 84eb137492e0afaaac80e8d26561fd8f8aff9c27 
  src/netwm.h 393a29de3153a8b291b9fb249bd3eaeb1ba4e7d5 
  src/kwindowsystem_x11.cpp 01c78c1debf95d5a176e2153139da19abf383c41 
  src/kwindowsystem_win.cpp 96148b2d808396a3046204e55fd19d767db017c5 
  autotests/netrootinfotestwm.cpp 120fbee92d0b22862d8ce746b3b30891ecd9f056 
  src/kwindowsystem.h 3de0fea179dd468a78a265808fc64704027ec30d 
  src/kwindowsystem_mac.cpp 8bd2ac763fa26ba49e7733fc3ba93e755383928c 

Diff: https://git.reviewboard.kde.org/r/115137/diff/


Testing
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* wm part of NETWM is unit tested
* KWindowSystem is only compile tested (unit testing is difficult as we need a window manager which supports this property which is at the moment of this writing: none)
* Windows and Mac is not even compile tested, that's why kdewin is included in the review. If you have the time for it, please do a compile test.


Thanks,

Martin Gräßlin

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