From e43f29576d4666a66cd4d236418baf403f176069 Mon Sep 17 00:00:00 2001
From: Peter Penz <peter.penz19@gmail.com>
Date: Wed, 28 Sep 2011 20:04:31 +0200
Subject: Details view: Improve performance when expanding items

Prevent unnecessary calls to visibleRolesSizes() when
expanding items. Also the performance has been improved when
resizing the window.
---
 src/kitemviews/kitemlistview.h | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

(limited to 'src/kitemviews/kitemlistview.h')

diff --git a/src/kitemviews/kitemlistview.h b/src/kitemviews/kitemlistview.h
index 091d2c36b..73b736bf7 100644
--- a/src/kitemviews/kitemlistview.h
+++ b/src/kitemviews/kitemlistview.h
@@ -337,16 +337,24 @@ private:
     QHash<QByteArray, qreal> headerRolesWidths() const;
 
     /**
-     * Updates m_visibleRoleSizes by calling KItemListView::visibleRoleSizes()
-     * if the m_itemRect is empty and no custom header-widths are used
-     * (see m_useHeaderWidths).
+     * Updates m_visibleRolesSizes by calling KItemListView::visibleRolesSizes().
+     * Nothing will be done if m_itemRect is not empty or custom header-widths
+     * are used (see m_useHeaderWidths). Also m_strechedVisibleRolesSizes will be adjusted
+     * to respect the available view-size.
      */
-    void updateVisibleRoleSizes(const KItemRangeList& itemRanges);
+    void updateVisibleRolesSizes(const KItemRangeList& itemRanges);
 
     /**
      * Convenience method for updateVisibleRoleSizes(KItemRangeList() << KItemRange(0, m_model->count()).
      */
-    void updateVisibleRoleSizes();
+    void updateVisibleRolesSizes();
+
+    /**
+     * Updates m_stretchedVisibleRolesSizes based on m_visibleRolesSizes and the available
+     * view-size. Nothing will be done if m_itemRect is not empty or custom header-widths
+     * are used (see m_useHeaderWidths).
+     */
+    void updateStretchedVisibleRolesSizes();
 
     /**
      * Helper function for triggerAutoScrolling().
@@ -369,6 +377,7 @@ private:
     KItemModelBase* m_model;
     QList<QByteArray> m_visibleRoles;
     QHash<QByteArray, QSizeF> m_visibleRolesSizes;
+    QHash<QByteArray, QSizeF> m_stretchedVisibleRolesSizes;
     KItemListWidgetCreatorBase* m_widgetCreator;
     KItemListGroupHeaderCreatorBase* m_groupHeaderCreator;
     KItemListStyleOption m_styleOption;
-- 
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