| Need help to control scrolling in the gallery [message #51775] |
Tue, 22 April 2008 03:27  |
Eclipse User |
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Hi,
I am using a Gallery and am adding (using drag & drop) images into the
gallery but don't seem to be able to stop the gallery repositioning itself
to the top.
I am using SWT.VIRTUAL and gallery.clearAll(); each time I add one or more
items into the middle of the "list";
I have tried: gallery.getVerticalBar().setSelection(scrollPosition);
but that didn't quite work. The scrollbar was set but the gallery was
still positioned at the top.
I also tried gallery.showItem(item); That works pretty well but the shown
Item can be anywhere ( top or bottom) so the page jumps about a bit
unexpectedly for the user.
Any help would be appreciated
Thanks
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| Re: Need help to control scrolling in the gallery [message #51994 is a reply to message #51775] |
Thu, 24 April 2008 04:29  |
| Eclipse User |
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Hi,
If you want to use setSelection on a scrollbar, just send a selection
event right after that,
http://sharemedia.svn.sourceforge.net/viewvc/sharemedia/trun k/org.sharemedia.ui.sat/src/org/sharemedia/ui/sat/effects/Mo veScrollBarEffect.java?revision=802&view=markup
But clearAll is not supposed to reset position if Table or Tree does not
do it.
Please fill a bug if the behavior is not the same as Table.
--
Nicolas
Trevor Campbell a écrit :
> Hi,
>
> I am using a Gallery and am adding (using drag & drop) images into the
> gallery but don't seem to be able to stop the gallery repositioning
> itself to the top.
>
> I am using SWT.VIRTUAL and gallery.clearAll(); each time I add one or
> more items into the middle of the "list";
>
> I have tried: gallery.getVerticalBar().setSelection(scrollPosition);
> but that didn't quite work. The scrollbar was set but the gallery was
> still positioned at the top.
>
> I also tried gallery.showItem(item); That works pretty well but the
> shown Item can be anywhere ( top or bottom) so the page jumps about a
> bit unexpectedly for the user.
>
> Any help would be appreciated
> Thanks
>
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| Re: Need help to control scrolling in the gallery [message #589462 is a reply to message #51775] |
Thu, 24 April 2008 04:29 |
| Eclipse User |
|
|
|
Hi,
If you want to use setSelection on a scrollbar, just send a selection
event right after that,
http://sharemedia.svn.sourceforge.net/viewvc/sharemedia/trun k/org.sharemedia.ui.sat/src/org/sharemedia/ui/sat/effects/Mo veScrollBarEffect.java?revision=802&view=markup
But clearAll is not supposed to reset position if Table or Tree does not
do it.
Please fill a bug if the behavior is not the same as Table.
--
Nicolas
Trevor Campbell a écrit :
> Hi,
>
> I am using a Gallery and am adding (using drag & drop) images into the
> gallery but don't seem to be able to stop the gallery repositioning
> itself to the top.
>
> I am using SWT.VIRTUAL and gallery.clearAll(); each time I add one or
> more items into the middle of the "list";
>
> I have tried: gallery.getVerticalBar().setSelection(scrollPosition);
> but that didn't quite work. The scrollbar was set but the gallery was
> still positioned at the top.
>
> I also tried gallery.showItem(item); That works pretty well but the
> shown Item can be anywhere ( top or bottom) so the page jumps about a
> bit unexpectedly for the user.
>
> Any help would be appreciated
> Thanks
>
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