Review Request 124954: Add support for modifier only shortcuts on Wayland

[Martin Gräßlin]

> On Aug. 27, 2015, 9:04 p.m., Thomas Pfeiffer wrote:
> > Since this is indeed a very often required feature, why do we keep it hidden? If it can have negative side-effects, it we should warn users about them, not hide the whole feature from them.
> 
> Thomas Lübking wrote:
>     or restricte to wayland? same process would work for kglobalaccel on X11.
>     Afaiu the restriction has always been the shortcut editor widget?
> 
> Martin Gräßlin wrote:
>     > why do we keep it hidden?
>     
>     Because it's extremely technical the way it's implemented. I don't want to have a UI which exposes internal, technical functionality to setup DBus calls.
>     
>     The question is what do people want to do with it? Open the launcher with meta. What else? Nothing? Anybody who wants shift to act as a launcher? unlikely or Alt on a German keyboard? Unlikely.
>     
>     If we want to have Meta to trigger opening the launcher, Plasma should provide a default config for KWin. It's nothing KWin cares about, we support multiple desktop shells and won't add it directly to KWin. The feature is implemented in a generic way, but that also means it's very technical to configure. Thus nothing to be exposed in a config.
>     
>     After all isn't it you guys who tell me that our config dialogs are too complex? ;-)
> 
> Thomas Lübking wrote:
>     which launcher?
>     kickoff?
>     homerun?
>     krunner?
>     
>     while at it: should we allow modifier combinations? (eg. Meta: kickoff, Shift+Meta: homerun, ctrl+Meta: krunner)

> which launcher?

I'd say that's up to Plasma to come up with a solution for that. E.g. a DBus call to open the currently used launcher (assuming that users don't put multiple launchers in their panel).

> should we allow modifier combinations?

nah that just complicates it ;-)


- Martin


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On Aug. 27, 2015, 6:04 p.m., Martin Gräßlin wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/124954/
> -----------------------------------------------------------
> 
> (Updated Aug. 27, 2015, 6:04 p.m.)
> 
> 
> Review request for kwin, Plasma and Hans Chen.
> 
> 
> Repository: kwin
> 
> 
> Description
> -------
> 
> On popular demand!
> 
> This change tracks how modifiers are used and detects a modifier only
> key press/release. That is:
> * no other key is pressed when the modifier gets pressed
> * no other key gets pressed before the modifier gets released
> 
> If such a press/release is detected, we call a configurable dbus call.
> The possible shortcuts can be configured in kwinrc, group
> "ModifierOnlyShortcuts". The following keys are supported:
> * Shift
> * Control
> * Alt
> * Meta
> 
> As value it takes a QStringList (comma seperated string) with
> service,path,interface,method,additionalargs
> 
> E.g. to invoke Desktop Grid effect on Meta key:
> 
> [ModifierOnlyShortcuts]
> Meta=org.kde.kglobalaccel,/component/kwin/,org.kde.kglobalaccel.Component,invokeShortcut,ShowDesktopGrid
> 
> I do not intend to add a config interface for it. Let's keep it a hidden
> way.
> 
> 
> Diffs
> -----
> 
>   input.h cfb693dc06a18ea9ca7cffb99b9a1318ee443e3a 
>   input.cpp 92724d7b7559dd460a8f5fbe17deb3c72024eed6 
>   options.h 07c5193e3bd205c5c8c22a305f4c1d87e16d175f 
>   options.cpp 64269d64bc49640bf2e4e925ce1969f2a5d6b96b 
> 
> Diff: https://git.reviewboard.kde.org/r/124954/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Martin Gräßlin
> 
>

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