Analyzer: Fix scrolling

Broken by qtbase commit 934f06220391eb0e0ebf66a2eb037f48adb4c43c

Change-Id: Ib58aa6ff31b7ce81bfa26e1ccf1bbf209618b307
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/valgrind/callgrindcostview.cpp

@@ -53,8 +53,6 @@ CostView::CostView(QWidget *parent)
 {
     setSelectionMode(QAbstractItemView::ExtendedSelection);
     setSelectionBehavior(QAbstractItemView::SelectRows);
-    setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
-    setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
     setUniformRowHeights(true);
     setAutoScroll(false);
     setSortingEnabled(true);

src/plugins/valgrind/memcheckerrorview.cpp

@@ -492,6 +492,19 @@ QString MemcheckErrorView::defaultSuppressionFile() const
     return m_defaultSuppFile;
 }
 
+void MemcheckErrorView::updateGeometries()
+{
+    if (model()) {
+        QModelIndex index = model()->index(0, modelColumn(), rootIndex());
+        QStyleOptionViewItem option = viewOptions();
+        // delegate for row / column
+        QSize step = itemDelegate()->sizeHint(option, index);
+        horizontalScrollBar()->setSingleStep(step.width() + spacing());
+        verticalScrollBar()->setSingleStep(step.height() + spacing());
+    }
+    QListView::updateGeometries();
+}
+
 // slot, can (for now) be invoked either when the settings were modified *or* when the active
 // settings object has changed.
 void MemcheckErrorView::settingsChanged(ValgrindBaseSettings *settings)

src/plugins/valgrind/memcheckerrorview.h

@@ -54,6 +54,8 @@ public:
     QString defaultSuppressionFile() const;
     ValgrindBaseSettings *settings() const { return m_settings; }
 
+    void updateGeometries();
+
 public slots:
     void settingsChanged(ValgrindBaseSettings *settings);
     void goNext();