trying to avoid redraw problems at wrong places

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

diff --git a/src/generic/scrlwing.cpp b/src/generic/scrlwing.cpp
index ffff7d7509502736e4801210271bfac3fdf1adf5..03165ffd11b2f1055bef7ec4edf99c872d44d07b 100644 (file)
--- a/src/generic/scrlwing.cpp
+++ b/src/generic/scrlwing.cpp
@@ -18,7 +18,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
     #pragma implementation "genscrolwin.h"
 #endif
 
@@ -40,8 +40,11 @@
 
 #include "wx/scrolwin.h"
 #include "wx/panel.h"
+#if wxUSE_TIMER
 #include "wx/timer.h"
+#endif
 #include "wx/sizer.h"
+#include "wx/recguard.h"
 
 #ifdef __WXMSW__
     #include <windows.h> // for DLGC_WANTARROWS
@@ -61,6 +64,11 @@
 
 IMPLEMENT_CLASS(wxScrolledWindow, wxGenericScrolledWindow)
 
+/*
+       TODO PROPERTIES
+               style wxHSCROLL | wxVSCROLL
+*/
+
 // ----------------------------------------------------------------------------
 // wxScrollHelperEvtHandler: intercept the events from the window and forward
 // them to wxScrollHelper
@@ -86,6 +94,7 @@ private:
     DECLARE_NO_COPY_CLASS(wxScrollHelperEvtHandler)
 };
 
+#if wxUSE_TIMER
 // ----------------------------------------------------------------------------
 // wxAutoScrollTimer: the timer used to generate a stream of scroll events when
 // a captured mouse is held outside the window
@@ -170,6 +179,7 @@ void wxAutoScrollTimer::Notify()
         }
     }
 }
+#endif
 
 // ----------------------------------------------------------------------------
 // wxScrollHelperEvtHandler
@@ -360,15 +370,21 @@ void wxScrollHelper::SetScrollbars(int pixelsPerUnitX,
     if (do_refresh && !noRefresh)
         m_targetWindow->Refresh(TRUE, GetScrollRect());
 
-    // TODO: check if we can use AdjustScrollbars always.
-#ifdef __WXUNIVERSAL__
-    AdjustScrollbars();
-#else    
-    // This is also done by AdjustScrollbars, above
-#ifdef __WXMAC__
-    m_targetWindow->MacUpdateImmediately() ;
-#endif
-#endif
+#ifndef __WXUNIVERSAL__
+    // If the target is not the same as the window with the scrollbars,
+    // then we need to update the scrollbars here, since they won't have
+    // been updated by SetVirtualSize().
+    if ( m_targetWindow != m_win )
+#endif // !__WXUNIVERSAL__
+    {
+        AdjustScrollbars();
+    }
+#ifndef __WXUNIVERSAL__
+    else
+    {
+        // otherwise this has been done by AdjustScrollbars, above
+    }
+#endif // !__WXUNIVERSAL__
 }
 
 // ----------------------------------------------------------------------------
@@ -494,10 +510,6 @@ void wxScrollHelper::HandleOnScroll(wxScrollWinEvent& event)
     {
         m_targetWindow->ScrollWindow(dx, dy, GetScrollRect());
     }
-
-#ifdef __WXMAC__
-    m_targetWindow->MacUpdateImmediately() ;
-#endif
 }
 
 int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event)
@@ -603,9 +615,18 @@ int wxScrollHelper::CalcScrollInc(wxScrollWinEvent& event)
 // Adjust the scrollbars - new version.
 void wxScrollHelper::AdjustScrollbars()
 {
-#ifdef __WXMAC__
-    m_targetWindow->MacUpdateImmediately();
-#endif
+    static wxRecursionGuardFlag s_flagReentrancy;
+    wxRecursionGuard guard(s_flagReentrancy);
+    if ( guard.IsInside() )
+    {
+        // don't reenter AdjustScrollbars() while another call to
+        // AdjustScrollbars() is in progress because this may lead to calling
+        // ScrollWindow() twice and this can really happen under MSW if
+        // SetScrollbar() call below adds or removes the scrollbar which
+        // changes the window size and hence results in another
+        // AdjustScrollbars() call
+        return;
+    }
 
     int w = 0, h = 0;
     int oldw, oldh;
@@ -704,7 +725,7 @@ void wxScrollHelper::AdjustScrollbars()
         oldh = h;
 
         GetTargetSize( &w, &h );
-    } while ( w != oldw && h != oldh );
+    } while ( w != oldw || h != oldh );
 
 #ifdef __WXMOTIF__
     // Sorry, some Motif-specific code to implement a backing pixmap
@@ -756,10 +777,6 @@ void wxScrollHelper::AdjustScrollbars()
         else
             m_targetWindow->Refresh(TRUE, GetScrollRect());
     }
-
-#ifdef __WXMAC__
-    m_targetWindow->MacUpdateImmediately();
-#endif
 }
 
 void wxScrollHelper::DoPrepareDC(wxDC& dc)
@@ -823,10 +840,6 @@ void wxScrollHelper::Scroll( int x_pos, int y_pos )
     if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
         ((y_pos == -1) || (y_pos == m_yScrollPosition))) return;
 
-#ifdef __WXMAC__
-    m_targetWindow->MacUpdateImmediately();
-#endif
-
     int w, h;
     GetTargetSize(&w, &h);
 
@@ -872,11 +885,6 @@ void wxScrollHelper::Scroll( int x_pos, int y_pos )
                                           GetScrollRect() );
         }
     }
-
-#ifdef __WXMAC__
-    m_targetWindow->MacUpdateImmediately();
-#endif
-
 }
 
 void wxScrollHelper::EnableScrolling (bool x_scroll, bool y_scroll)
@@ -1058,11 +1066,13 @@ bool wxScrollHelper::SendAutoScrollEvents(wxScrollWinEvent& event) const
 
 void wxScrollHelper::StopAutoScrolling()
 {
+#if wxUSE_TIMER
     if ( m_timerAutoScroll )
     {
         delete m_timerAutoScroll;
         m_timerAutoScroll = (wxTimer *)NULL;
     }
+#endif
 }
 
 void wxScrollHelper::HandleOnMouseEnter(wxMouseEvent& event)
@@ -1124,6 +1134,7 @@ void wxScrollHelper::HandleOnMouseLeave(wxMouseEvent& event)
         if ( !m_targetWindow->HasScrollbar(orient) )
             return;
 
+#if wxUSE_TIMER
         delete m_timerAutoScroll;
         m_timerAutoScroll = new wxAutoScrollTimer
                                 (
@@ -1134,6 +1145,7 @@ void wxScrollHelper::HandleOnMouseLeave(wxMouseEvent& event)
                                     orient
                                 );
         m_timerAutoScroll->Start(50); // FIXME: make configurable
+#endif
     }
 }
 
@@ -1254,35 +1266,19 @@ wxGenericScrolledWindow::MSWWindowProc(WXUINT nMsg,
 {
     long rc = wxPanel::MSWWindowProc(nMsg, wParam, lParam);
 
+#ifndef __WXWINCE__
     // we need to process arrows ourselves for scrolling
     if ( nMsg == WM_GETDLGCODE )
     {
         rc |= DLGC_WANTARROWS;
     }
+#endif
 
     return rc;
 }
 
 #endif // __WXMSW__
 
-#if WXWIN_COMPATIBILITY
-
-void wxGenericScrolledWindow::GetScrollUnitsPerPage (int *x_page, int *y_page) const
-{
-      *x_page = GetScrollPageSize(wxHORIZONTAL);
-      *y_page = GetScrollPageSize(wxVERTICAL);
-}
-
-void wxGenericScrolledWindow::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
-
 #endif // !wxGTK
 
 // vi:sts=4:sw=4:et