X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/053f9cc122c63048d9607a3d684e9dca28ae96ac..79144b8a47e93d03d136fd39cd730060930dec77:/src/generic/scrolwin.cpp

diff --git a/src/generic/scrolwin.cpp b/src/generic/scrolwin.cpp
index 033b08913b..81a4a152de 100644
--- a/src/generic/scrolwin.cpp
+++ b/src/generic/scrolwin.cpp
@@ -305,10 +305,13 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
 }
 
 // Adjust the scrollbars - new version.
-void wxScrolledWindow::AdjustScrollbars(void)
+void wxScrolledWindow::AdjustScrollbars()
 {
     int w, h;
     GetClientSize(&w, &h);
+    
+    int oldXScroll = m_xScrollPosition;
+    int oldYScroll = m_yScrollPosition;
 
     if (m_xScrollLines > 0)
     {
@@ -353,6 +356,22 @@ void wxScrolledWindow::AdjustScrollbars(void)
         m_yScrollPosition = 0;
         SetScrollbar (wxVERTICAL, 0, 0, 0, FALSE); 
     }
+    
+    if (oldXScroll != m_xScrollPosition)
+    {
+       if (m_xScrollingEnabled)
+            ScrollWindow( m_xScrollPixelsPerLine * (oldXScroll-m_xScrollPosition), 0, (const wxRect *) NULL );
+       else
+            Refresh();
+    }
+    
+    if (oldYScroll != m_yScrollPosition)
+    {
+        if (m_yScrollingEnabled)
+            ScrollWindow( 0, m_yScrollPixelsPerLine * (oldYScroll-m_yScrollPosition), (const wxRect *) NULL );
+        else
+            Refresh();
+    }
 }
 
 // Default OnSize resets scrollbars, if any
@@ -390,12 +409,22 @@ void wxScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const
       *x_page = GetScrollPageSize(wxHORIZONTAL);
       *y_page = GetScrollPageSize(wxVERTICAL);
 }
-#endif
+
+void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, float *xx, float *yy) const
+{
+    if ( xx )
+        *xx = (float)(x + m_xScrollPosition * m_xScrollPixelsPerLine);
+    if ( yy )
+        *yy = (float)(y + m_yScrollPosition * m_yScrollPixelsPerLine);
+}
+#endif // WXWIN_COMPATIBILITY
 
 void wxScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const
 {
-      *x_unit = m_xScrollPixelsPerLine;
-      *y_unit = m_yScrollPixelsPerLine;
+    if ( x_unit )
+        *x_unit = m_xScrollPixelsPerLine;
+    if ( y_unit )
+        *y_unit = m_yScrollPixelsPerLine;
 }
 
 int wxScrolledWindow::GetScrollPageSize(int orient) const
@@ -427,6 +456,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 
     if (x_pos != -1)
     {
+        int old_x = m_xScrollPosition;
         m_xScrollPosition = x_pos;
     
 	// Calculate page size i.e. number of scroll units you get on the
@@ -440,9 +470,12 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
         m_xScrollPosition = wxMax( 0, m_xScrollPosition );
       
         SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
+	
+	ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
     }
     if (y_pos != -1)
     {
+        int old_y = m_yScrollPosition;
         m_yScrollPosition = y_pos;
 	
 	// Calculate page size i.e. number of scroll units you get on the
@@ -456,14 +489,15 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
         m_yScrollPosition = wxMax( 0, m_yScrollPosition );
 	
         SetScrollPos( wxVERTICAL, m_yScrollPosition, TRUE );
+	
+	ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
     }
     
-    // BAD, BAD, can cause event loops if called from OnPaint(). KB.
-    // Refresh();
     
 #ifdef __WXMSW__
-    // Necessary?
-    ::UpdateWindow ((HWND) GetHWND());
+//    ::UpdateWindow ((HWND) GetHWND());
+#else
+//    Refresh();
 #endif
 }
 
@@ -475,27 +509,33 @@ void wxScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll)
 
 void wxScrolledWindow::GetVirtualSize (int *x, int *y) const
 {
-    *x = m_xScrollPixelsPerLine * m_xScrollLines;
-    *y = m_yScrollPixelsPerLine * m_yScrollLines;
+    if ( x )
+        *x = m_xScrollPixelsPerLine * m_xScrollLines;
+    if ( y )
+        *y = m_yScrollPixelsPerLine * m_yScrollLines;
 }
 
 // Where the current view starts from
 void wxScrolledWindow::ViewStart (int *x, int *y) const
 {
-    *x = m_xScrollPosition;
-    *y = m_yScrollPosition;
+    if ( x )
+        *x = m_xScrollPosition;
+    if ( y )
+        *y = m_yScrollPosition;
 }
 
 void wxScrolledWindow::CalcScrolledPosition(int x, int y, int *xx, int *yy) const
 {
-    *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
-    *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
+    if ( xx )
+        *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
+    if ( yy )
+        *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
 }
 
-void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, float *xx, float *yy) const
+void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
 {
-    *xx = (float)(x + m_xScrollPosition * m_xScrollPixelsPerLine);
-    *yy = (float)(y + m_yScrollPosition * m_yScrollPixelsPerLine);
+    if ( xx )
+        *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine;
+    if ( yy )
+        *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine;
 }
-
-