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This is an automatically generated e-mail. To reply, visit:
<a href="https://git.reviewboard.kde.org/r/115137/">https://git.reviewboard.kde.org/r/115137/</a>
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<a href="https://git.reviewboard.kde.org/r/115137/diff/3/?file=241111#file241111line256" style="color: black; font-weight: bold; text-decoration: underline;">src/kwindowsystem_x11.cpp</a>
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(Diff revision 3)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">bool KWindowSystemPrivate::nativeEventFilter(xcb_generic_event_t *ev)</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">emit</span> <span class="n">s_q</span><span class="o">-></span><span class="n">activeOutputChanged</span><span class="p">(</span><span class="n">QString</span><span class="o">::</span><span class="n">fromUtf8</span><span class="p">(</span><span class="n">activeOutput</span><span class="p">()));</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">Brainstorm.
Assuming this is of rare interest and we would want to limit X11 roundtrips and pointer tracking.
The WM could then simply set the strategy (mouse/active window) and ::activeOutput() could check that to calculate the reult on request.
KWindowSystem could (on connect notify) track the mouse/active window to emit the signal.
This way tracking would only be required if/while some client is really interested.
Downside is that 2 or more clients could be tracking simultanously.
Benefit would be that other WMs can adapt this very easily and we don't rely on XI2 support (what will probably also not work if the mouse is navigated by the keyboard?)</pre>
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<a href="https://git.reviewboard.kde.org/r/115137/diff/3/?file=241113#file241113line1931" style="color: black; font-weight: bold; text-decoration: underline;">src/netwm.cpp</a>
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(Diff revision 3)
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">if</span> <span class="p">(</span><span class="n">p</span><span class="o">-></span><span class="n">active_output</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">!=</span> <span class="sc">'\0'</span><span class="p">)</span> <span class="p">{</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">The API says the parameter can be NULL, nstrdup will then return a casted nullptr and this will segfault. (Or I missed something?)</pre>
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<p>- Thomas Lübking</p>
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<p>On January 31st, 2014, 1:01 p.m. UTC, Martin Gräßlin wrote:</p>
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<div>Review request for KDE Frameworks, kdewin and kwin.</div>
<div>By Martin Gräßlin.</div>
<p style="color: grey;"><i>Updated Jan. 31, 2014, 1:01 p.m.</i></p>
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<b style="color: #575012; font-size: 10pt;">Repository: </b>
kwindowsystem
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">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.
---
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.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">* 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.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>tests/activeoutputtest.cpp <span style="color: grey">(PRE-CREATION)</span></li>
<li>tests/CMakeLists.txt <span style="color: grey">(ce68cc505a69ea9a3cf645e9ae587bd89abe1648)</span></li>
<li>src/netwm_p.h <span style="color: grey">(41792b330f7405034f4d51fb31a4de5dd674b6d0)</span></li>
<li>src/netwm_def.h <span style="color: grey">(8b1ccb8bd731aefb9559c8f2b450337b0312ed4d)</span></li>
<li>src/netwm.cpp <span style="color: grey">(84eb137492e0afaaac80e8d26561fd8f8aff9c27)</span></li>
<li>src/netwm.h <span style="color: grey">(393a29de3153a8b291b9fb249bd3eaeb1ba4e7d5)</span></li>
<li>src/kwindowsystem_x11.cpp <span style="color: grey">(01c78c1debf95d5a176e2153139da19abf383c41)</span></li>
<li>src/kwindowsystem_win.cpp <span style="color: grey">(96148b2d808396a3046204e55fd19d767db017c5)</span></li>
<li>autotests/netrootinfotestwm.cpp <span style="color: grey">(120fbee92d0b22862d8ce746b3b30891ecd9f056)</span></li>
<li>src/kwindowsystem.h <span style="color: grey">(3de0fea179dd468a78a265808fc64704027ec30d)</span></li>
<li>src/kwindowsystem_mac.cpp <span style="color: grey">(8bd2ac763fa26ba49e7733fc3ba93e755383928c)</span></li>
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<p><a href="https://git.reviewboard.kde.org/r/115137/diff/" style="margin-left: 3em;">View Diff</a></p>
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