pkgs/qt/patches/qt-everywhere-opensource-src-4.7.0-QTBUG-13567-QTreeView.patch

   1 From 6da6b7099d4e0b49329793e4b90703ec3d868048 Mon Sep 17 00:00:00 2001
   2 From: Frank Reininghaus <frank78ac@googlemail.com>
   3 Date: Wed, 22 Sep 2010 10:19:59 +0200
   4 Subject: [PATCH] QTreeView: do not scroll to top if last item is removed
   5
   6 When the last item is the current item and is removed,
   7 QTreeViewPrivate::updateScrollBars() is called after QTreeViewPrivate's
   8 viewItems member is cleared. This commit makes sure that viewItems is
   9 restored by calling QTreeView::doItemsLayout() in this case, preventing
  10 that the scroll bar range is set to zero temporarily and the view is
  11 scrolled to the top unexpectedly (this was a regression in 4.7.0:
  12 QTBUG-13567).
  13
  14 Merge-request: 2481
  15 Reviewed-by: Olivier Goffart <olivier.goffart@nokia.com>
  16
  17 diff --git a/src/gui/itemviews/qtreeview.cpp b/src/gui/itemviews/qtreeview.cpp
  18 index b797776..40b51fe 100644
  19 --- a/src/gui/itemviews/qtreeview.cpp
  20 +++ b/src/gui/itemviews/qtreeview.cpp
  21 @@ -3435,6 +3435,10 @@ void QTreeViewPrivate::updateScrollBars()
  22      if (!viewportSize.isValid())
  23          viewportSize = QSize(0, 0);
  24
  25 +    if (viewItems.isEmpty()) {
  26 +        q->doItemsLayout();
  27 +    }
  28 +
  29      int itemsInViewport = 0;
  30      if (uniformRowHeights) {
  31          if (defaultItemHeight <= 0)