Group header improvements

- Use a simpler background and colors as suggested by Martin Zilz.
  This is just an early draft, I need to post some comparison screenshots to
  Martin for review.
- Fixes of some layout issues that have been revealed because of adjusting
  the group header heights.
- More clever animation/no-animation detection when doing listview-property
  changes in parallel.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/views/dolphinitemlistcontainer.cpp b/src/views/dolphinitemlistcontainer.cpp
index 4f7a0e06b..65f69d963 100644
--- a/src/views/dolphinitemlistcontainer.cpp
+++ b/src/views/dolphinitemlistcontainer.cpp
@@ -242,8 +242,10 @@ void DolphinItemListContainer::updateGridSize()
     // Apply the calculated values
     styleOption.margin = innerMargin;
     styleOption.iconSize = iconSize;
+    m_fileItemListView->beginTransaction();
     m_fileItemListView->setStyleOption(styleOption);
     m_fileItemListView->setItemSize(QSizeF(itemWidth, itemHeight));
+    m_fileItemListView->endTransaction();
 }
 
 void DolphinItemListContainer::updateFont()