Control for scrolling

Carsten Pfeiffer carpdjih at
Fri Dec 12 13:03:08 GMT 2003

On Thursday 11 December 2003 18:38, Aaron Seigo wrote:

> QListView, QListBox, QIconView, etc support BOTH Shift and Control as 
> fast-scrolling modifiers. they swing both ways, so to speak. ;-) it's
> really 
 a matter of which one to steal for zooming needs. QTextEdit and
> KView have chosen Control, and that makes sense.

Oh, that's news to me!

> As for KTextEdit, here's the appropriate code:
> void KTextEdit::contentsWheelEvent( QWheelEvent *e )
> {
>     if ( KGlobalSettings::wheelMouseZooms() )
>         QTextEdit::contentsWheelEvent( e );
>     else // thanks, we don't want to zoom, so skip QTextEdit's impl.
>         QScrollView::contentsWheelEvent( e );
> }
> so if we do scroll with the mouse wheel, we use QTextEdit's wheel event 
> handler. and that means Control to zoom.

Hmm, maybe I misunderstand you, but the above code makes it zoom if Ctrl-wheel 
is configured to zoom and fast-scroll otherwise.

> just noticed that OOo also uses Ctrl for zooming, if that matters any =)

Right. If it would only support fast-scrolling with Shift though :) I'm fine 
with using Shift then.

Carsten Pfeiffer

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