Give wxScrolledWindow its own Layout method that takes into account

the virtual size and scrolled offset of the window.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14597 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/generic/scrolwin.h

@@ -66,6 +66,9 @@ public:
 
     virtual void PrepareDC(wxDC& dc) { DoPrepareDC(dc); }
 
+        // lay out the window and its children
+    virtual bool Layout();
+
 protected:
     // this is needed for wxEVT_PAINT processing hack described in
     // wxScrollHelperEvtHandler::ProcessEvent()

include/wx/gtk/scrolwin.h

@@ -108,6 +108,9 @@ public:
     // automatically change the origin according to the scroll position.
     virtual void PrepareDC(wxDC& dc);
 
+    // lay out the window and its children
+    virtual bool Layout();
+
     // Adjust the scrollbars
     virtual void AdjustScrollbars();
 

include/wx/gtk1/scrolwin.h

@@ -108,6 +108,9 @@ public:
     // automatically change the origin according to the scroll position.
     virtual void PrepareDC(wxDC& dc);
 
+    // lay out the window and its children
+    virtual bool Layout();
+
     // Adjust the scrollbars
     virtual void AdjustScrollbars();
 

src/generic/scrlwing.cpp

@@ -836,11 +836,6 @@ void wxScrollHelper::CalcUnscrolledPosition(int x, int y, int *xx, int *yy) cons
 // Default OnSize resets scrollbars, if any
 void wxScrollHelper::HandleOnSize(wxSizeEvent& WXUNUSED(event))
 {
-#if wxUSE_CONSTRAINTS
-    if ( m_win->GetAutoLayout() )
-        m_win->Layout();
-#endif
-
     AdjustScrollbars();
 }
 
@@ -1109,6 +1104,21 @@ wxGenericScrolledWindow::~wxGenericScrolledWindow()
 {
 }
 
+bool wxGenericScrolledWindow::Layout()
+{
+    if (GetSizer())
+    {
+        // 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
+}
+
 void wxGenericScrolledWindow::OnPaint(wxPaintEvent& event)
 {
     // the user code didn't really draw the window if we got here, so set this

src/gtk/scrolwin.cpp

@@ -33,6 +33,7 @@
 
 #include "wx/scrolwin.h"
 #include "wx/panel.h"
+#include "wx/sizer.h"
 
 #include "wx/gtk/private.h"
 #include "wx/gtk/win_gtk.h"
@@ -760,6 +761,22 @@ void wxScrolledWindow::GtkVDisconnectEvent()
         (GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this );
 }
 
+
+bool wxScrolledWindow::Layout()
+{
+    if (GetSizer())
+    {
+        // 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
 // ----------------------------------------------------------------------------

src/gtk1/scrolwin.cpp

@@ -33,6 +33,7 @@
 
 #include "wx/scrolwin.h"
 #include "wx/panel.h"
+#include "wx/sizer.h"
 
 #include "wx/gtk/private.h"
 #include "wx/gtk/win_gtk.h"
@@ -760,6 +761,22 @@ void wxScrolledWindow::GtkVDisconnectEvent()
         (GtkSignalFunc) gtk_scrolled_window_vscroll_callback, (gpointer) this );
 }
 
+
+bool wxScrolledWindow::Layout()
+{
+    if (GetSizer())
+    {
+        // 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
 // ----------------------------------------------------------------------------