X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/3d2b9c202d215ec220a7b2d62b28768ec7f40e44..9ce192d417eb9eb614bcf8510e91dac318706249:/src/generic/scrolwin.cpp?ds=sidebyside

diff --git a/src/generic/scrolwin.cpp b/src/generic/scrolwin.cpp
index 17facb6ea2..6834384fad 100644
--- a/src/generic/scrolwin.cpp
+++ b/src/generic/scrolwin.cpp
@@ -85,6 +85,7 @@ wxScrolledWindow::wxScrolledWindow()
     m_yScrollLinesPerPage = 0;
     m_scaleX = 1.0;
     m_scaleY = 1.0;
+    m_targetWindow = (wxWindow*) NULL;
 }
 
 bool wxScrolledWindow::Create(wxWindow *parent,
@@ -129,16 +130,20 @@ void wxScrolledWindow::SetScrollbars (int pixelsPerUnitX, int pixelsPerUnitY,
                int noUnitsX, int noUnitsY,
                int xPos, int yPos, bool noRefresh )
 {
+    int xpos, ypos;
+
+    CalcUnscrolledPosition(xPos, yPos, &xpos, &ypos);
     bool do_refresh =
     (
       (noUnitsX != 0 && m_xScrollLines == 0) ||
-      (noUnitsX < m_xScrollLines) ||
+      (noUnitsX < m_xScrollLines && xpos > pixelsPerUnitX*noUnitsX) || 
+
       (noUnitsY != 0 && m_yScrollLines == 0) ||
-      (noUnitsY < m_yScrollLines) ||
+      (noUnitsY < m_yScrollLines && ypos > pixelsPerUnitY*noUnitsY) ||
       (xPos != m_xScrollPosition) ||
-      (yPos != m_yScrollPosition) ||
-      (pixelsPerUnitX != m_xScrollPixelsPerLine) ||
-      (pixelsPerUnitY != m_yScrollPixelsPerLine)
+      (yPos != m_yScrollPosition)
+//       (pixelsPerUnitX != m_xScrollPixelsPerLine) ||
+//       (pixelsPerUnitY != m_yScrollPixelsPerLine)
     );
 
     m_xScrollPixelsPerLine = pixelsPerUnitX;
@@ -317,6 +322,7 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
             break;
         }
         case wxEVT_SCROLLWIN_THUMBTRACK:
+        case wxEVT_SCROLLWIN_THUMBRELEASE:
         {
             if (orient == wxHORIZONTAL)
                 nScrollInc = pos - m_xScrollPosition;
@@ -498,6 +504,9 @@ void wxScrolledWindow::SetScrollPageSize(int orient, int pageSize)
  */
 void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 {
+    if (!m_targetWindow)
+        return;
+
     if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
         ((y_pos == -1) || (y_pos == m_yScrollPosition))) return;
 
@@ -649,11 +658,13 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
 	szy = -1;
     }
 
+    int dsty;
     switch ( event.KeyCode() )
     {
         case WXK_PAGEUP:
         case WXK_PRIOR:
-            Scroll(-1, sty - (5 * cliy / 6));
+            dsty = sty - (5 * cliy / 6);
+            Scroll(-1, (dsty == -1) ? 0 : dsty);
             break;
 
         case WXK_PAGEDOWN: