* Do not call invalidate from activateRecursive().
This resulted in that a layout was invalidated as many times as there
were items in the layout.
* Several improvements. Do not call resize(size()) too often.
Calling resize() from the widgetEvent() is not very nice though...
* Remove commented out code
* make sure layout is activated even if the widget does not change size
* activate the layout if the resize is same as size()
* In order to not break existing apps, make this an opt-in feature
with QGraphicsLayout::setInstantInvalidatePropagation(true);
Reviewed-by: Frederik Gladhorn
Reviewed-by: John Tapsell
This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
