Add tests for wxBackingFile.

[wxWidgets.git] / src / generic / vscroll.cpp

diff --git a/src/generic/vscroll.cpp b/src/generic/vscroll.cpp
index bce13cb38de0d5ba24842567a79f8adef59b0fc0..a7d388a9bf4bb4af08507786f1c8db052e3a87b4 100644 (file)
--- a/src/generic/vscroll.cpp
+++ b/src/generic/vscroll.cpp
@@ -24,6 +24,10 @@
 #pragma hdrstop
 #endif
 
 #pragma hdrstop
 #endif
 

+#ifndef WX_PRECOMP
+    #include "wx/sizer.h"
+#endif
+

 #include "wx/vscroll.h"
 
 // ----------------------------------------------------------------------------
 #include "wx/vscroll.h"
 
 // ----------------------------------------------------------------------------


@@ -156,6 +160,13 @@ size_t wxVScrolledWindow::FindFirstFromBottom(size_t lineLast, bool full)
     return lineFirst;
 }
 
     return lineFirst;
 }
 

+void wxVScrolledWindow::RemoveScrollbar()
+{
+    m_lineFirst = 0;
+    m_nVisible = m_lineMax;
+    SetScrollbar(wxVERTICAL, 0, 0, 0);
+}
+

 void wxVScrolledWindow::UpdateScrollbar()
 {
     // see how many lines can we fit on screen
 void wxVScrolledWindow::UpdateScrollbar()
 {
     // see how many lines can we fit on screen


@@ -185,8 +196,8 @@ void wxVScrolledWindow::UpdateScrollbar()
         if ( hAll < hWindow )
         {
             // we don't need scrollbar at all
         if ( hAll < hWindow )
         {
             // we don't need scrollbar at all

-            m_lineFirst = 0;
-            SetScrollbar(wxVERTICAL, 0, 0, 0);
+            RemoveScrollbar();
+            return;

         }
     }
 
         }
     }
 


@@ -218,8 +229,15 @@ void wxVScrolledWindow::SetLineCount(size_t count)
     m_heightTotal = EstimateTotalHeight();
 
     // recalculate the scrollbars parameters
     m_heightTotal = EstimateTotalHeight();
 
     // recalculate the scrollbars parameters

-    m_lineFirst = 1;    // make sure it is != 0
-    ScrollToLine(0);
+    if ( count )
+    {
+        m_lineFirst = 1;    // make sure it is != 0
+        ScrollToLine(0);
+    }
+    else // no items
+    {
+        RemoveScrollbar();
+    }

 }
 
 void wxVScrolledWindow::RefreshLine(size_t line)
 }
 
 void wxVScrolledWindow::RefreshLine(size_t line)


@@ -289,7 +307,7 @@ bool wxVScrolledWindow::Layout()
         // adjust the sizer dimensions/position taking into account the
         // virtual size and scrolled position of the window.
 
         // adjust the sizer dimensions/position taking into account the
         // virtual size and scrolled position of the window.
 

-        int w, h;
+        int w = 0, h = 0;

         GetVirtualSize(&w, &h);
 
         // x is always 0 so no variable needed
         GetVirtualSize(&w, &h);
 
         // x is always 0 so no variable needed