View: Fix #515 by fixing typo and extent handling

[pulseview.git] / pv / view / view.cpp

diff --git a/pv/view/view.cpp b/pv/view/view.cpp
index 083d02dad9c6fa6043ae3c906363165a2c8294c0..f349861f226fe0f1833974b0d9ca9216e6a1466c 100644 (file)
--- a/pv/view/view.cpp
+++ b/pv/view/view.cpp
@@ -483,11 +483,11 @@ void View::update_scroll()
 
        // Set the vertical scrollbar
        verticalScrollBar()->setPageStep(areaSize.height());
+       verticalScrollBar()->setSingleStep(areaSize.height() / 8);
 
        const pair<int, int> extents = v_extents();
-       const int extra_scroll_height = (extents.second - extents.first) / 4;
-       verticalScrollBar()->setRange(extents.first - extra_scroll_height,
-               extents.first + extra_scroll_height);
+       verticalScrollBar()->setRange(extents.first - (areaSize.height() / 2),
+               extents.second - (areaSize.height() / 2));
 }
 
 void View::update_layout()