Review Request 121240: Port to new KScreen API

[Aleix Pol Gonzalez]

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shell/shellcorona.cpp
<https://git.reviewboard.kde.org/r/121240/#comment49565>

    Are you sure this is correct?
    
    This was done because at some point Configuration::primaryOutput and Output::isPrimary were not consistent and this was a way to make it consistent.


- Aleix Pol Gonzalez


On Nov. 25, 2014, 9:18 a.m., Daniel Vrátil wrote:
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> https://git.reviewboard.kde.org/r/121240/
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> (Updated Nov. 25, 2014, 9:18 a.m.)
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> 
> Review request for Plasma.
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> Repository: plasma-workspace
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> Description
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> This patch ports ShellCorona and PanelView to new KScreen API. The new API is completely asynchronous and is using shared pointers. The internals have also undergone some major changes, but they don't directly affect Plasma.
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> Additionally to the port, this patch also changes the way ShellCorona reacts to primary screen changes: instead of listening to Output::isPrimaryChanged on each output, it listens now to Config::primaryOutputChanged. The reason is that when some output is set as primary, the signal is emitted right away. This can happen before the old primary is unset though, which then causes crashes in screenInvariants() in some situations/configurations. Listening to Config::primaryOutputChanges ensures that Plasma reacts only once, and only when the Config is consistent.
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> The new KScreen API is available in dev/redesign branches in libkscreen.git. I'll merge the branch to "frameworks" branch once this review is approved in order not to break build.
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> Diffs
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>   shell/panelview.cpp 0dc5740 
>   shell/shellcorona.h 5e97e02 
>   shell/shellcorona.cpp 0da789f 
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> Diff: https://git.reviewboard.kde.org/r/121240/diff/
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> Testing
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> Been using this patch and the new KScreen for couple weeks now, works better than the old one.
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> Thanks,
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> Daniel Vrátil
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