[Development] Application wide shortcuts API for QML

Rick Stockton rickstockton at reno-computerhelp.com
Tue Dec 11 20:04:39 CET 2012

On 12/11/2012 12:53 AM, Mark wrote:
> Hi,
> Alan' posts about possible future APIs made me want to post this as
> well. In the QWidget works we have the rather nice QShortcut class to
> aid us in defining application wide shortcuts.
> Functionality like that is completely missing from the current QtQuick
> in both Qt 4.8 (1.1) and 5.0 (2.0). For desktop based applications an
> API like that would be very much needed since applications need to
> have the ability to define app wide shortcuts.
> I already made an API for exactly this reason which can be found here [1].
> The API itself should look somewhat like this:
> Shortcut {
>     QKeySequence key
>     signal activated
> }
> Obviously if this is going to happen then mouse shortcuts should be
> included as well. Right now Qt itself has no possibility of defining a
> shortcut like "CTRL + LEFT MOUSE BUTTON" (or i don't know of it's
> possibility).

>From the get-go, I'm not sure that it's desirable to take away the
opportunity for users to install a different even filter at the QApp
But I took your code and added logic to do this kind of event (which is
only a single event, quite easy). My "code" also supports an emacs-like
sequence of one mouse event (with or without modifier keys), followed by
a single key (as in your code). one keyboard. But I'm unsure whether we
want to have the GUI-related mouse support in the same Class as the
keyboard shortcuts, which could apply to console applications as well
(both QML and non-QML). First, however, I need to make it compile
succesfully: I am (so far) unable to convert 'QEvent::Type' enum values
into QVariant, and I'm unsure why all variables are being defined as
QVariant in the first place (i.e., instead of specific datatypes.)

I know that you busy with a new job :)) If you can assist, however,
please advise. Same goes for everyone else - Alan? My time is relatively
unlimited for the next week, but I'm an incompetent programmer.

> The signal gets emitted when the sequence has been pressed. The
> current implementation as written on the blog post in [1] works like a
> charm in my case :)
> [1] http://kdeblog.mageprojects.com/2012/12/07/application-wide-shortcuts-in-qml-this-time-without-qshortcut/

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