Better behaviour on NT (no dialogs when searching drives)

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

diff --git a/src/generic/scrolwin.cpp b/src/generic/scrolwin.cpp
index 17facb6ea23aaf37fa686042c4e2a2aca1fd2d4a..f73c8875c8ff044fe9e3eb8923989002b2130669 100644 (file)
--- 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,
@@ -109,8 +110,14 @@ bool wxScrolledWindow::Create(wxWindow *parent,
 
     m_targetWindow = this;
 
-    // we need wxWANTS_CHARS to process arrows ourselves
-    return wxPanel::Create(parent, id, pos, size, style | wxWANTS_CHARS, name);
+    bool ok = wxPanel::Create(parent, id, pos, size, style, name);
+
+#ifdef __WXMSW__
+    // we need to process arrows ourselves for scrolling
+    m_lDlgCode |= DLGC_WANTARROWS;
+#endif // __WXMSW__
+
+    return ok;
 }
 
 wxScrolledWindow::~wxScrolledWindow()
@@ -129,16 +136,20 @@ 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 +328,7 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
             break;
         }
         case wxEVT_SCROLLWIN_THUMBTRACK:
+        case wxEVT_SCROLLWIN_THUMBRELEASE:
         {
             if (orient == wxHORIZONTAL)
                 nScrollInc = pos - m_xScrollPosition;
@@ -498,13 +510,16 @@ 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;
 
     int w, h;
     m_targetWindow->GetClientSize(&w, &h);
 
-    if (x_pos != -1)
+    if ((x_pos != -1) && (m_xScrollPixelsPerLine))
     {
         int old_x = m_xScrollPosition;
         m_xScrollPosition = x_pos;
@@ -519,12 +534,12 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
         m_xScrollPosition = wxMin( m_xScrollLines-noPagePositions, m_xScrollPosition );
         m_xScrollPosition = wxMax( 0, m_xScrollPosition );
 
-        if (old_x == m_xScrollPosition) return;
-
-        m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
-        m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+        if (old_x != m_xScrollPosition) {
+            m_targetWindow->SetScrollPos( wxHORIZONTAL, m_xScrollPosition, TRUE );
+            m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
+        }
     }
-    if (y_pos != -1)
+    if ((y_pos != -1) && (m_yScrollPixelsPerLine))
     {
         int old_y = m_yScrollPosition;
         m_yScrollPosition = y_pos;
@@ -539,10 +554,10 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
         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 );
+        if (old_y != m_yScrollPosition) {
+            m_targetWindow->SetScrollPos( wxVERTICAL, m_yScrollPosition, TRUE );
+            m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
+        }
     }
 
 #ifdef __WXMAC__
@@ -631,12 +646,12 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
     if( m_xScrollPixelsPerLine )
     {
         clix /= m_xScrollPixelsPerLine;
-       szx /= m_xScrollPixelsPerLine;
+        szx /= m_xScrollPixelsPerLine;
     }
     else
     {
         clix = 0;
-       szx = -1;
+        szx = -1;
     }
     if( m_yScrollPixelsPerLine )
     {
@@ -646,14 +661,16 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
     else
     {
         cliy = 0;
-       szy = -1;
+        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: