Fix wrong scrolling (#6809)

minetest · Dec 21, 2017 · 257626ceedc986de822eac5f9708e505b41ec87d · 257626c
1 parent d04c41a
commit 257626ceedc986de822eac5f9708e505b41ec87d
Showing 1 changed file with 4 additions and 7 deletions.
diff --git a/src/gui/intlGUIEditBox.cpp b/src/gui/intlGUIEditBox.cpp
@@ -1431,13 +1431,10 @@ void intlGUIEditBox::calculateScrollPos()
 	}
 
 	// vertical scroll position
-	if (FrameRect.LowerRightCorner.Y < CurrentTextRect.LowerRightCorner.Y + VScrollPos)
-		VScrollPos = CurrentTextRect.LowerRightCorner.Y - FrameRect.LowerRightCorner.Y + VScrollPos;
-
-	else if (FrameRect.UpperLeftCorner.Y > CurrentTextRect.UpperLeftCorner.Y + VScrollPos)
-		VScrollPos = CurrentTextRect.UpperLeftCorner.Y - FrameRect.UpperLeftCorner.Y + VScrollPos;
-	else
-		VScrollPos = 0;
+	if (FrameRect.LowerRightCorner.Y < CurrentTextRect.LowerRightCorner.Y)
+		VScrollPos += CurrentTextRect.LowerRightCorner.Y - FrameRect.LowerRightCorner.Y; // scrolling downwards
+	else if (FrameRect.UpperLeftCorner.Y > CurrentTextRect.UpperLeftCorner.Y)
+		VScrollPos += CurrentTextRect.UpperLeftCorner.Y - FrameRect.UpperLeftCorner.Y; // scrolling upwards
 
 	// todo: adjust scrollbar
 	if (m_vscrollbar)