X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/56dade3c4d9b09f8bd290daf31a6b635aede029a..777fd647dc188519b1d1067dc25b1386ca36d9f3:/src/generic/scrolwin.cpp

diff --git a/src/generic/scrolwin.cpp b/src/generic/scrolwin.cpp
index 6370bbb356..ada5b1c236 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;
@@ -260,7 +265,7 @@ void wxScrolledWindow::OnScroll(wxScrollWinEvent& event)
             m_targetWindow->ScrollWindow(0, -m_yScrollPixelsPerLine * nScrollInc, (const wxRect *) NULL);
         else
             m_targetWindow->Refresh();
-  }
+    }
 #ifdef __WXMAC__
     m_targetWindow->MacUpdateImmediately() ;
 #endif
@@ -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;
@@ -385,14 +391,14 @@ void wxScrolledWindow::AdjustScrollbars()
 
     if (m_xScrollLines > 0)
     {
-            // Calculate page size i.e. number of scroll units you get on the
-            // current client window
+        // Calculate page size i.e. number of scroll units you get on the
+        // current client window
         int noPagePositions = (int) ( (w/(double)m_xScrollPixelsPerLine) + 0.5 );
         if (noPagePositions < 1) noPagePositions = 1;
 
         // Correct position if greater than extent of canvas minus
-            // the visible portion of it or if below zero
-            m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition);
+        // the visible portion of it or if below zero
+        m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition);
         m_xScrollPosition = wxMax( 0, m_xScrollPosition );
 
         SetScrollbar(wxHORIZONTAL, m_xScrollPosition, noPagePositions, m_xScrollLines);
@@ -407,13 +413,13 @@ void wxScrolledWindow::AdjustScrollbars()
 
     if (m_yScrollLines > 0)
     {
-            // Calculate page size i.e. number of scroll units you get on the
-            // current client window
+        // Calculate page size i.e. number of scroll units you get on the
+        // current client window
         int noPagePositions = (int) ( (h/(double)m_yScrollPixelsPerLine) + 0.5 );
         if (noPagePositions < 1) noPagePositions = 1;
 
         // Correct position if greater than extent of canvas minus
-            // the visible portion of it or if below zero
+        // the visible portion of it or if below zero
         m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
         m_yScrollPosition = wxMax( 0, m_yScrollPosition );
 
@@ -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;
 
@@ -509,43 +518,44 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
         int old_x = m_xScrollPosition;
         m_xScrollPosition = x_pos;
 
-            // Calculate page size i.e. number of scroll units you get on the
-            // current client window
+        // Calculate page size i.e. number of scroll units you get on the
+        // current client window
         int noPagePositions = (int) ( (w/(double)m_xScrollPixelsPerLine) + 0.5 );
         if (noPagePositions < 1) noPagePositions = 1;
 
         // Correct position if greater than extent of canvas minus
-            // the visible portion of it or if below zero
+        // the visible portion of it or if below zero
         m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition );
         m_xScrollPosition = wxMax( 0, m_xScrollPosition );
 
-        m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
+        if (old_x == m_xScrollPosition) return;
 
-            m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+        m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
+        m_targetWindow->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
-            // current client window
+        // Calculate page size i.e. number of scroll units you get on the
+        // current client window
         int noPagePositions = (int) ( (h/(double)m_yScrollPixelsPerLine) + 0.5 );
         if (noPagePositions < 1) noPagePositions = 1;
 
         // Correct position if greater than extent of canvas minus
-            // the visible portion of it or if below zero
+        // the visible portion of it or if below zero
         m_yScrollPosition = wxMin( m_yScrollLines-noPagePositions, m_yScrollPosition );
         m_yScrollPosition = wxMax( 0, m_yScrollPosition );
+        
+        if (old_y == m_yScrollPosition) return;
 
         m_targetWindow->SetScrollPos( wxVERTICAL, m_yScrollPosition, TRUE );
-
         m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
     }
 
-
 #ifdef __WXMAC__
-    m_targetWindow->MacUpdateImmediately() ;
+    m_targetWindow->MacUpdateImmediately();
 #endif
 }
 
@@ -660,16 +670,12 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
             Scroll(-1, sty + (5 * cliy / 6));
             break;
 
-        // notice that handling of Ctrl-Home/End is asymmetrical: Home goes to
-        // the beginning of the current line, Ctrl-Home returns to the origin
-        // while End goes to the bottom without changing horizontal position
-        // and only Ctrl-End does go to the most rightmost position as well
         case WXK_HOME:
             Scroll(0, event.ControlDown() ? 0 : -1);
             break;
 
         case WXK_END:
-            Scroll(event.ControlDown() ? szx - clix : -1, szy - cliy);
+            Scroll(szx - clix, event.ControlDown() ? szy - cliy : -1);
             break;
 
         case WXK_UP: