[Development] Proposal: change QML Flickable's flickableDirection default value to AutoFlickIfNeeded in 5.8

[Alexander Nassian]

Hi Andrea,

Good proposal! But one little hint: The current behavior is not that confusing as you describe. On iOS and OS X for example the current behavior is normal.


Beste Grüße / Best regards,
Alexander Nassian
http://www.bitshift-dynamics.de

> Am 26.07.2016 um 16:12 schrieb Andrea Bernabei <and.bernabei at gmail.com>:
> 
> Hello everyone,
> 
> I'd like to propose changing the default value of QML Flickable's flickableDirection in Qt 5.8.
> 
> The current default value is Flickable.AutoFlickDirection
> The description is: it "allows flicking vertically if the contentHeight is not equal to the height of the Flickable. Allows flicking horizontally if the contentWidth is not equal to the width of the Flickable."
> 
> It seems to me like the current default was chosen to make it so that the surface is always draggable except for things like vertical ListViews (where contentWidth==width, or the same for height in the case of horizontal lists).
> 
> I propose we should change the default value to Flickable.AutoFlickIfNeeded (added by Shawn, Flickable's maintainer, in 5.7 https://codereview.qt-project.org/#/c/150388/ ).
> 
> I'll try using bullet points to avoid a wall of text.
> 
> Proposal:
> Change default Flickable's flickableDirection to AutoFlickIfNeeded in Qt5.8, and only available when importing QtQuick >= 2.8
> 
> Why:
> The current behaviour is a bit confusing. If we only take the horizontal dimension into account:
> - content narrower than Flickable --> content IS draggable (why?)
> - content same size as Flickable --> content NOT draggable
> - content wider than Flickable      --> content IS draggable
> 
> While with the proposed change:
> - content narrower than Flickable --> content NOT draggable
> - content same size as Flickable --> content NOT draggable
> - content wider than Flickable      --> content IS draggable
> 
> I believe the new behaviour is better, the content is only draggable when dragging "makes sense", i.e. when dragging would reveal additional content that would otherwise be hidden. 
> 
> What do you guys think? 
> 
> Cheers,
> Andrea (faenil)
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