QAbstractSlider: keypad navigation is slow.

Add logic to make keypad navigation faster when auto repeating.

Task-number: QTBUG-5988
Reviewed-by: Gareth Stockwell

1 files changed, 32 insertions, 1 deletions

diff --git a/src/gui/widgets/qabstractslider_p.h b/src/gui/widgets/qabstractslider_p.h
index 9324d44..6591981 100644
--- a/src/gui/widgets/qabstractslider_p.h
+++ b/src/gui/widgets/qabstractslider_p.h
@@ -68,7 +68,13 @@ public:
 
     void setSteps(int single, int page);
 
-    int minimum, maximum, singleStep, pageStep, value, position, pressValue;
+    int minimum, maximum, pageStep, value, position, pressValue;
+
+    /**
+     * Call effectiveSingleStep() when changing the slider value.
+     */
+    int singleStep;
+
     float offset_accumulated;
     uint tracking : 1;
     uint blocktracking :1;
@@ -83,8 +89,33 @@ public:
     
 #ifdef QT_KEYPAD_NAVIGATION
     int origValue;
+
+    /**
+     */
+    bool isAutoRepeating;
+
+    /**
+     * When we're auto repeating, we multiply singleStep with this value to
+     * get our effective step.
+     */
+    qreal repeatMultiplier;
+
+    /**
+     * The time of when the first auto repeating key press event occurs.
+     */
+    QTime firstRepeat;
+
 #endif
 
+    inline int effectiveSingleStep() const
+    {
+        return singleStep
+#ifdef QT_KEYPAD_NAVIGATION
+        * repeatMultiplier
+#endif
+        ;
+    }
+
     inline int bound(int val) const { return qMax(minimum, qMin(maximum, val)); }
     inline int overflowSafeAdd(int add) const
     {