Thanks bo,
I will have a look at QListView and delegates instead. I'd love to get
that to work as it has so many things for free that I will want to utilise.
I am having trouble though with creating a delegate that makes every
item behave like my custom widget.
E.g. The widget/item is like a QMovie instance that plays back on mouse
over, has it's own QSlider to scrub through the movie and can be
dragged/dropped.
I will give it another shot and might be back for more help...
Thanks,
frank
On 4/08/16 8:36 pm, Bo Thorsen wrote:
Den 04-08-2016 kl. 10:05 skrev Frank Rueter | OHUfx:
I am playing with the idea of writing a custom widget based on
QScrollArea, where widgets are created as the user scrolls.
I'm just hoping to bounce the general idea of you guys here to see if
I'm heading in the right direction:
I have a heap of custom widgets, potentially thousands, depending on the
contents of a database.
I'd like to show them in a grid that fits as many widgets horizontally
as will fit in the current window size (dynamic).
I would also like smooth vertical scrolling.
If I create a single parent widget with a grid layout that creates all
widgets on start up, it takes ages.
So I'm thinking if I use the child widgets' visibleRegion() to find the
ones currently visible in the scroll area, then figure out the indexes
of the widgets in the rows above and below to create them dynamically,
that should speed up the startup and still provide smooth scrolling.
Obviously I'd have to manually scale the scroll area based on the
maximum amount of widgets and the parent widget's width to get an
indicative scrollbar.
Not sure how tricky that will be.
Does that sound crazy or doable?
Basically I am trying to re-create the behavior of a QListView in icon
mode. I tried using QListView with delegates, but couldn't get the
delegates to provide the kind of complexity I need for the child widgets
which I have already written (which are basically mini movie players
that can be drag&dropped and have playback all at once on demand).
Any thoughts on this before I dive into this little experiment?
I don't think that sounds unreasonable. If I were you, I would try
very hard to stay with QListView instead, but other than that it
doesn't sound hard to do. Time consuming, yes, but not difficult.
Bo Thorsen,
Director, Viking Software.
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