Added support for native print preview (GNOME)

[wxWidgets.git] / src / gtk1 / scrolwin.cpp

diff --git a/src/gtk1/scrolwin.cpp b/src/gtk1/scrolwin.cpp
index 1d2378e79b7b83f985aee94be4bcfd08434b9169..fd31b4e024c25b015742fc1c5eff5604422661b3 100644 (file)
--- a/src/gtk1/scrolwin.cpp
+++ b/src/gtk1/scrolwin.cpp
@@ -1,12 +1,12 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        gtk/scrolwin.cpp
 // Purpose:     wxScrolledWindow implementation
 /////////////////////////////////////////////////////////////////////////////
 // Name:        gtk/scrolwin.cpp
 // Purpose:     wxScrolledWindow implementation

-// Author:      Julian Smart
-// Modified by:
+// Author:      Robert Roebling
+// Modified by: Ron Lee

 // Created:     01/02/97
 // RCS-ID:      $Id$
 // Created:     01/02/97
 // RCS-ID:      $Id$

-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:     wxWindows license
+// Copyright:   (c) Robert Roebling
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 /////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================


@@ -17,7 +17,7 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

     #pragma implementation "scrolwin.h"
 #endif
 
     #pragma implementation "scrolwin.h"
 #endif
 


@@ -28,11 +28,11 @@
     #pragma hdrstop
 #endif
 
     #pragma hdrstop
 #endif
 

+#include "wx/scrolwin.h"

 #include "wx/utils.h"
 #include "wx/dcclient.h"
 #include "wx/utils.h"
 #include "wx/dcclient.h"

-
-#include "wx/scrolwin.h"

 #include "wx/panel.h"
 #include "wx/panel.h"

+#include "wx/sizer.h"

 
 #include "wx/gtk/private.h"
 #include "wx/gtk/win_gtk.h"
 
 #include "wx/gtk/private.h"
 #include "wx/gtk/win_gtk.h"


@@ -82,7 +82,7 @@ static void gtk_scrolled_window_vscroll_callback( GtkAdjustment *adjust,
     if (g_blockEventsOnDrag) return;
 
     if (!win->m_hasVMT) return;
     if (g_blockEventsOnDrag) return;
 
     if (!win->m_hasVMT) return;

-
+    

     win->GtkVScroll( adjust->value,
             GET_SCROLL_TYPE(GTK_SCROLLED_WINDOW(win->m_widget)->vscrollbar) );
 }
     win->GtkVScroll( adjust->value,
             GET_SCROLL_TYPE(GTK_SCROLLED_WINDOW(win->m_widget)->vscrollbar) );
 }


@@ -201,8 +201,6 @@ void wxScrolledWindow::Init()
     m_yScrollingEnabled = TRUE;
     m_xScrollPosition = 0;
     m_yScrollPosition = 0;
     m_yScrollingEnabled = TRUE;
     m_xScrollPosition = 0;
     m_yScrollPosition = 0;

-    m_xScrollLines = 0;
-    m_yScrollLines = 0;

     m_xScrollLinesPerPage = 0;
     m_yScrollLinesPerPage = 0;
     m_targetWindow = (wxWindow*) NULL;
     m_xScrollLinesPerPage = 0;
     m_yScrollLinesPerPage = 0;
     m_targetWindow = (wxWindow*) NULL;


@@ -275,13 +273,13 @@ bool wxScrolledWindow::Create(wxWindow *parent,
     m_vAdjust->upper = 1.0;
     m_vAdjust->value = 0.0;
     m_vAdjust->step_increment = 1.0;
     m_vAdjust->upper = 1.0;
     m_vAdjust->value = 0.0;
     m_vAdjust->step_increment = 1.0;

-    m_vAdjust->page_increment = 1.0;
+    m_vAdjust->page_increment = 2.0;

     gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
     m_hAdjust->lower = 0.0;
     m_hAdjust->upper = 1.0;
     m_hAdjust->value = 0.0;
     m_hAdjust->step_increment = 1.0;
     gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
     m_hAdjust->lower = 0.0;
     m_hAdjust->upper = 1.0;
     m_hAdjust->value = 0.0;
     m_hAdjust->step_increment = 1.0;

-    m_hAdjust->page_increment = 1.0;
+    m_hAdjust->page_increment = 2.0;

     gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
 
     // Handlers for new scrollbar values
     gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
 
     // Handlers for new scrollbar values


@@ -289,7 +287,7 @@ bool wxScrolledWindow::Create(wxWindow *parent,
     GtkHConnectEvent();
 
     // these handlers block mouse events to any window during scrolling such as
     GtkHConnectEvent();
 
     // these handlers block mouse events to any window during scrolling such as

-    // motion events and prevent GTK and wxWindows from fighting over where the
+    // motion events and prevent GTK and wxWidgets from fighting over where the

     // slider should be
 
     gtk_signal_connect( GTK_OBJECT(scrolledWindow->vscrollbar), "button_press_event",
     // slider should be
 
     gtk_signal_connect( GTK_OBJECT(scrolledWindow->vscrollbar), "button_press_event",


@@ -308,13 +306,13 @@ bool wxScrolledWindow::Create(wxWindow *parent,
 
     if (m_parent)
         m_parent->DoAddChild( this );
 
     if (m_parent)
         m_parent->DoAddChild( this );

-        
+

     m_focusWidget = m_wxwindow;
 
     PostCreation();
 
     Show( TRUE );
     m_focusWidget = m_wxwindow;
 
     PostCreation();
 
     Show( TRUE );

-
+    

     return TRUE;
 }
 
     return TRUE;
 }
 


@@ -322,69 +320,121 @@ bool wxScrolledWindow::Create(wxWindow *parent,
 // setting scrolling parameters
 // ----------------------------------------------------------------------------
 
 // setting scrolling parameters
 // ----------------------------------------------------------------------------
 

+void wxScrolledWindow::DoSetVirtualSize( int x, int y )
+{
+    wxPanel::DoSetVirtualSize( x, y );
+    AdjustScrollbars();
+
+#if wxUSE_CONSTRAINTS
+    if (GetAutoLayout())
+        Layout();
+#endif
+}
+

 /*
  * pixelsPerUnitX/pixelsPerUnitY: number of pixels per unit (e.g. pixels per text line)
  * noUnitsX/noUnitsY:        : no. units per scrollbar
  */
 /*
  * pixelsPerUnitX/pixelsPerUnitY: number of pixels per unit (e.g. pixels per text line)
  * noUnitsX/noUnitsY:        : no. units per scrollbar
  */

-void wxScrolledWindow::SetScrollbars (int pixelsPerUnitX, int pixelsPerUnitY,
-               int noUnitsX, int noUnitsY,
-               int xPos, int yPos, bool noRefresh )
+void wxScrolledWindow::SetScrollbars( int pixelsPerUnitX, int pixelsPerUnitY,
+                                      int noUnitsX, int noUnitsY,
+                                      int xPos, int yPos, bool noRefresh )

 {
 {

-    int old_x = m_xScrollPixelsPerLine * m_xScrollPosition;
-    int old_y = m_yScrollPixelsPerLine * m_yScrollPosition;
+    int xs, ys;
+    GetViewStart (& xs, & ys);

     
     

+    int old_x = m_xScrollPixelsPerLine * xs;
+    int old_y = m_yScrollPixelsPerLine * ys;
+

     m_xScrollPixelsPerLine = pixelsPerUnitX;
     m_yScrollPixelsPerLine = pixelsPerUnitY;
     m_xScrollPixelsPerLine = pixelsPerUnitX;
     m_yScrollPixelsPerLine = pixelsPerUnitY;

-    m_xScrollLines = noUnitsX;
-    m_yScrollLines = noUnitsY;
-    m_xScrollPosition = xPos;
-    m_yScrollPosition = yPos;

 
 

-    m_hAdjust->lower = 0.0;
-    m_hAdjust->upper = noUnitsX;
-    m_hAdjust->value = xPos;
-    m_hAdjust->step_increment = 1.0;
-    m_hAdjust->page_increment = 2.0;
+    m_hAdjust->value = m_xScrollPosition = xPos;
+    m_vAdjust->value = m_yScrollPosition = yPos;
+
+    // Setting hints here should arguably be deprecated, but without it
+    // a sizer might override this manual scrollbar setting in old code.
+    m_targetWindow->SetVirtualSizeHints( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY );
+
+    m_targetWindow->SetVirtualSize( noUnitsX * pixelsPerUnitX, noUnitsY * pixelsPerUnitY );

 
 

-    m_vAdjust->lower = 0.0;
-    m_vAdjust->upper = noUnitsY;
-    m_vAdjust->value = yPos;
-    m_vAdjust->step_increment = 1.0;
-    m_vAdjust->page_increment = 2.0;
-    
-    AdjustScrollbars();
-    

     if (!noRefresh)
     {
         int new_x = m_xScrollPixelsPerLine * m_xScrollPosition;
         int new_y = m_yScrollPixelsPerLine * m_yScrollPosition;
     if (!noRefresh)
     {
         int new_x = m_xScrollPixelsPerLine * m_xScrollPosition;
         int new_y = m_yScrollPixelsPerLine * m_yScrollPosition;

-        
-        m_targetWindow->ScrollWindow( old_x-new_x, old_y-new_y );
+
+        m_targetWindow->ScrollWindow( old_x - new_x, old_y - new_y );

     }
 }
 
 void wxScrolledWindow::AdjustScrollbars()
 {
     int w, h;
     }
 }
 
 void wxScrolledWindow::AdjustScrollbars()
 {
     int w, h;

+    int vw, vh;
+

     m_targetWindow->GetClientSize( &w, &h );
     m_targetWindow->GetClientSize( &w, &h );

+    m_targetWindow->GetVirtualSize( &vw, &vh );

 
     if (m_xScrollPixelsPerLine == 0)
 
     if (m_xScrollPixelsPerLine == 0)

+    {
+        m_hAdjust->upper = 1.0;
+        m_hAdjust->page_increment = 1.0;

         m_hAdjust->page_size = 1.0;
         m_hAdjust->page_size = 1.0;

+    }

     else
     else

-        m_hAdjust->page_size = (w / m_xScrollPixelsPerLine);
+    {
+        m_hAdjust->upper = vw / m_xScrollPixelsPerLine;
+        m_hAdjust->page_increment = (w / m_xScrollPixelsPerLine);
+        m_hAdjust->page_size = m_hAdjust->page_increment;
+
+        // If the scrollbar hits the right side, move the window
+        // right to keep it from over extending.
+
+        if ((m_hAdjust->value != 0.0) && (m_hAdjust->value + m_hAdjust->page_size > m_hAdjust->upper))
+        {
+            m_hAdjust->value = m_hAdjust->upper - m_hAdjust->page_size;
+            if (m_hAdjust->value < 0.0)
+                m_hAdjust->value = 0.0;
+                
+            if (GetChildren().GetCount() == 0)
+                m_xScrollPosition = (int)m_hAdjust->value; // This is enough without child windows
+            else
+                gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" ); // Actually scroll window
+        }
+    }

 
     if (m_yScrollPixelsPerLine == 0)
 
     if (m_yScrollPixelsPerLine == 0)

+    {
+        m_vAdjust->upper = 1.0;
+        m_vAdjust->page_increment = 1.0;

         m_vAdjust->page_size = 1.0;
         m_vAdjust->page_size = 1.0;

+    }

     else
     else

-        m_vAdjust->page_size = (h / m_yScrollPixelsPerLine);
+    {
+        m_vAdjust->upper = vh / m_yScrollPixelsPerLine;
+        m_vAdjust->page_increment = (h / m_yScrollPixelsPerLine);
+        m_vAdjust->page_size = m_vAdjust->page_increment;
+
+        if ((m_vAdjust->value != 0.0) && (m_vAdjust->value + m_vAdjust->page_size > m_vAdjust->upper))
+        {
+            m_vAdjust->value = m_vAdjust->upper - m_vAdjust->page_size;
+            if (m_vAdjust->value < 0.0)
+                m_vAdjust->value = 0.0;
+                
+            if (GetChildren().GetCount() == 0)
+                m_yScrollPosition = (int)m_vAdjust->value;  
+            else
+                gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
+        }
+    }

 
 

-    m_xScrollLinesPerPage = (int)(m_hAdjust->page_size + 0.5);
-    m_yScrollLinesPerPage = (int)(m_vAdjust->page_size + 0.5);
+    m_xScrollLinesPerPage = (int)(m_hAdjust->page_increment + 0.5);
+    m_yScrollLinesPerPage = (int)(m_vAdjust->page_increment + 0.5);

 
     gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
     gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
 }
 
 
     gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "changed" );
     gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "changed" );
 }
 

+

 // ----------------------------------------------------------------------------
 // target window handling
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // target window handling
 // ----------------------------------------------------------------------------


@@ -395,19 +445,35 @@ void wxScrolledWindow::SetTargetWindow( wxWindow *target, bool WXUNUSED(pushEven
     m_targetWindow = target;
 }
 
     m_targetWindow = target;
 }
 

-wxWindow *wxScrolledWindow::GetTargetWindow()
+wxWindow *wxScrolledWindow::GetTargetWindow() const

 {
     return m_targetWindow;
 }
 
 // Override this function if you don't want to have wxScrolledWindow
 // automatically change the origin according to the scroll position.
 {
     return m_targetWindow;
 }
 
 // Override this function if you don't want to have wxScrolledWindow
 // automatically change the origin according to the scroll position.

-void wxScrolledWindow::PrepareDC(wxDC& dc)
+void wxScrolledWindow::DoPrepareDC(wxDC& dc)

 {
     dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine,
                         -m_yScrollPosition * m_yScrollPixelsPerLine );
 }
 
 {
     dc.SetDeviceOrigin( -m_xScrollPosition * m_xScrollPixelsPerLine,
                         -m_yScrollPosition * m_yScrollPixelsPerLine );
 }
 

+void wxScrolledWindow::SetScrollRate( int xstep, int ystep )
+{
+    int old_x = m_xScrollPixelsPerLine * m_xScrollPosition;
+    int old_y = m_yScrollPixelsPerLine * m_yScrollPosition;
+
+    m_xScrollPixelsPerLine = xstep;
+    m_yScrollPixelsPerLine = ystep;
+
+    int new_x = m_xScrollPixelsPerLine * m_xScrollPosition;
+    int new_y = m_yScrollPixelsPerLine * m_yScrollPosition;
+
+    m_targetWindow->ScrollWindow( old_x - new_x, old_y - new_y );
+
+    AdjustScrollbars();
+}
+

 void wxScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const
 {
     if ( x_unit )
 void wxScrolledWindow::GetScrollPixelsPerUnit (int *x_unit, int *y_unit) const
 {
     if ( x_unit )


@@ -477,8 +543,7 @@ void wxScrolledWindow::OnScroll(wxScrollWinEvent& event)
 
 void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 {
 
 void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 {

-    if (!m_targetWindow)
-        return;
+    wxASSERT_MSG( m_targetWindow != 0, _T("No target window") );

 
     if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
         ((y_pos == -1) || (y_pos == m_yScrollPosition))) return;
 
     if (((x_pos == -1) || (x_pos == m_xScrollPosition)) &&
         ((y_pos == -1) || (y_pos == m_yScrollPosition))) return;


@@ -496,7 +561,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 
         m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
 
 
         m_targetWindow->ScrollWindow( (old_x-m_xScrollPosition)*m_xScrollPixelsPerLine, 0 );
 

-        // Just update the scrollbar, don't send any wxWindows event
+        // Just update the scrollbar, don't send any wxWidgets event

         GtkHDisconnectEvent();
         gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
         GtkHConnectEvent();
         GtkHDisconnectEvent();
         gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
         GtkHConnectEvent();


@@ -515,7 +580,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 
         m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
 
 
         m_targetWindow->ScrollWindow( 0, (old_y-m_yScrollPosition)*m_yScrollPixelsPerLine );
 

-        // Just update the scrollbar, don't send any wxWindows event
+        // Just update the scrollbar, don't send any wxWidgets event

         GtkVDisconnectEvent();
         gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
         GtkVConnectEvent();
         GtkVDisconnectEvent();
         gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
         GtkVConnectEvent();


@@ -526,8 +591,7 @@ void wxScrolledWindow::Scroll( int x_pos, int y_pos )
 
 void wxScrolledWindow::GtkVScroll( float value, unsigned int scroll_type )
 {
 
 void wxScrolledWindow::GtkVScroll( float value, unsigned int scroll_type )
 {

-    if (!m_targetWindow)
-        return;
+    wxASSERT_MSG( m_targetWindow != 0, _T("No target window") );

 
     if (m_yScrollPixelsPerLine == 0)
         return;
 
     if (m_yScrollPixelsPerLine == 0)
         return;


@@ -546,8 +610,7 @@ void wxScrolledWindow::GtkVScroll( float value, unsigned int scroll_type )
 
 void wxScrolledWindow::GtkHScroll( float value, unsigned int scroll_type )
 {
 
 void wxScrolledWindow::GtkHScroll( float value, unsigned int scroll_type )
 {

-    if (!m_targetWindow)
-        return;
+    wxASSERT_MSG( m_targetWindow != 0, _T("No target window") );

 
     if (m_xScrollPixelsPerLine == 0)
         return;
 
     if (m_xScrollPixelsPerLine == 0)
         return;


@@ -570,14 +633,6 @@ void wxScrolledWindow::EnableScrolling (bool x_scroll, bool y_scroll)
     m_yScrollingEnabled = y_scroll;
 }
 
     m_yScrollingEnabled = y_scroll;
 }
 

-void wxScrolledWindow::GetVirtualSize (int *x, int *y) const
-{
-    if ( x )
-        *x = m_xScrollPixelsPerLine * m_xScrollLines;
-    if ( y )
-        *y = m_yScrollPixelsPerLine * m_yScrollLines;
-}
-

 // Where the current view starts from
 void wxScrolledWindow::GetViewStart (int *x, int *y) const
 {
 // Where the current view starts from
 void wxScrolledWindow::GetViewStart (int *x, int *y) const
 {


@@ -587,20 +642,26 @@ void wxScrolledWindow::GetViewStart (int *x, int *y) const
         *y = m_yScrollPosition;
 }
 
         *y = m_yScrollPosition;
 }
 

-void wxScrolledWindow::CalcScrolledPosition(int x, int y, int *xx, int *yy) const
+void wxScrolledWindow::DoCalcScrolledPosition(int x, int y, int *xx, int *yy) const

 {
 {

+    int xs, ys;
+    GetViewStart (& xs, & ys);
+    

     if ( xx )
     if ( xx )

-        *xx = x - m_xScrollPosition * m_xScrollPixelsPerLine;
+        *xx = x - xs * m_xScrollPixelsPerLine;

     if ( yy )
     if ( yy )

-        *yy = y - m_yScrollPosition * m_yScrollPixelsPerLine;
+        *yy = y - ys * m_yScrollPixelsPerLine;

 }
 
 }
 

-void wxScrolledWindow::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) const
+void wxScrolledWindow::DoCalcUnscrolledPosition(int x, int y, int *xx, int *yy) const

 {
 {

+    int xs, ys;
+    GetViewStart (& xs, & ys);
+    

     if ( xx )
     if ( xx )

-        *xx = x + m_xScrollPosition * m_xScrollPixelsPerLine;
+        *xx = x + xs * m_xScrollPixelsPerLine;

     if ( yy )
     if ( yy )

-        *yy = y + m_yScrollPosition * m_yScrollPixelsPerLine;
+        *yy = y + ys * m_yScrollPixelsPerLine;

 }
 
 int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
 }
 
 int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)


@@ -619,9 +680,9 @@ int wxScrolledWindow::CalcScrollInc(wxScrollWinEvent& event)
     if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM)
     {
             if (orient == wxHORIZONTAL)
     if (event.GetEventType() == wxEVT_SCROLLWIN_BOTTOM)
     {
             if (orient == wxHORIZONTAL)

-                nScrollInc = m_xScrollLines - m_xScrollPosition;
+                nScrollInc = GetVirtualSize().GetWidth() / m_xScrollPixelsPerLine - m_xScrollPosition;

             else
             else

-                nScrollInc = m_yScrollLines - m_yScrollPosition;
+                nScrollInc = GetVirtualSize().GetHeight() / m_yScrollPixelsPerLine - m_yScrollPosition;

     } else
     if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP)
     {
     } else
     if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP)
     {


@@ -721,14 +782,14 @@ void wxScrolledWindow::SetScrollPos( int orient, int pos, bool refresh )
     {
         if (orient == wxHORIZONTAL)
         {
     {
         if (orient == wxHORIZONTAL)
         {

-            // Just update the scrollbar, don't send any wxWindows event
+            // Just update the scrollbar, don't send any wxWidgets event

             GtkHDisconnectEvent();
             gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
             GtkHConnectEvent();
         }
         else
         {
             GtkHDisconnectEvent();
             gtk_signal_emit_by_name( GTK_OBJECT(m_hAdjust), "value_changed" );
             GtkHConnectEvent();
         }
         else
         {

-            // Just update the scrollbar, don't send any wxWindows event
+            // Just update the scrollbar, don't send any wxWidgets event

             GtkVDisconnectEvent();
             gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
             GtkVConnectEvent();
             GtkVDisconnectEvent();
             gtk_signal_emit_by_name( GTK_OBJECT(m_vAdjust), "value_changed" );
             GtkVConnectEvent();


@@ -760,6 +821,23 @@ void wxScrolledWindow::GtkVDisconnectEvent()
         (GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this );
 }
 
         (GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this );
 }
 

+bool wxScrolledWindow::Layout()
+{
+    if (GetSizer() && m_targetWindow == this)
+    {
+        // If we're the scroll target, take into account the
+        // virtual size and scrolled position of the window.
+
+        int x, y, w, h;
+        CalcScrolledPosition(0,0, &x,&y);
+        GetVirtualSize(&w, &h);
+        GetSizer()->SetDimension(x, y, w, h);
+        return TRUE;
+    }
+    else
+        return wxPanel::Layout();  // fall back to default for LayoutConstraints
+}
+

 // ----------------------------------------------------------------------------
 // event handlers
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // event handlers
 // ----------------------------------------------------------------------------


@@ -767,12 +845,24 @@ void wxScrolledWindow::GtkVDisconnectEvent()
 // Default OnSize resets scrollbars, if any
 void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
 {
 // Default OnSize resets scrollbars, if any
 void wxScrolledWindow::OnSize(wxSizeEvent& WXUNUSED(event))
 {

-#if wxUSE_CONSTRAINTS
-    if (GetAutoLayout())
-        Layout();
-#endif
+    if( GetAutoLayout() || m_targetWindow->GetAutoLayout() )
+    {
+        if( m_targetWindow != this )
+            m_targetWindow->FitInside();

 
 

-    AdjustScrollbars();
+        FitInside();
+
+        // FIXME:  Something is really weird here...  This should be
+        // called by FitInside above (and apparently is), yet the
+        // scrollsub sample will get the scrollbar wrong if resized
+        // quickly.  This masks the bug, but is surely not the right
+        // answer at all.
+        AdjustScrollbars();
+    }
+    else
+    {
+        AdjustScrollbars();
+    }

 }
 
 // This calls OnDraw, having adjusted the origin according to the current
 }
 
 // This calls OnDraw, having adjusted the origin according to the current


@@ -795,7 +885,7 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
         szx, szy,       // view size (total)
         clix, cliy;     // view size (on screen)
 
         szx, szy,       // view size (total)
         clix, cliy;     // view size (on screen)
 

-    ViewStart(&stx, &sty);
+    GetViewStart(&stx, &sty);

     GetClientSize(&clix, &cliy);
     GetVirtualSize(&szx, &szy);
 
     GetClientSize(&clix, &cliy);
     GetVirtualSize(&szx, &szy);
 


@@ -824,7 +914,7 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
         yScrollOld = GetScrollPos(wxVERTICAL);
 
     int dsty;
         yScrollOld = GetScrollPos(wxVERTICAL);
 
     int dsty;

-    switch ( event.KeyCode() )
+    switch ( event.GetKeyCode() )

     {
         case WXK_PAGEUP:
         case WXK_PRIOR:
     {
         case WXK_PAGEUP:
         case WXK_PRIOR:


@@ -886,3 +976,5 @@ void wxScrolledWindow::OnChar(wxKeyEvent& event)
     }
 }
 
     }
 }
 

+
+// vi:sts=4:sw=4:et