wxTopLevelWindow (only for wxGTK for now)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@11612 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/toplvcmn.cpp

@@ -0,0 +1,169 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        common/toplvcmn.cpp
+// Purpose:     common (for all platforms) wxTopLevelWindow functions
+// Author:      Julian Smart, Vadim Zeitlin
+// Created:     01/02/97
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#ifdef __GNUG__
+    #pragma implementation "toplevelbase.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+    #include "wx/toplevel.h"
+    #include "wx/dcclient.h"
+#endif // WX_PRECOMP
+
+// ----------------------------------------------------------------------------
+// event table
+// ----------------------------------------------------------------------------
+
+BEGIN_EVENT_TABLE(wxTopLevelWindowBase, wxWindow)
+    EVT_CLOSE(wxTopLevelWindowBase::OnCloseWindow)
+    EVT_SIZE(wxTopLevelWindowBase::OnSize)
+END_EVENT_TABLE()
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// construction/destruction
+// ----------------------------------------------------------------------------
+
+wxTopLevelWindowBase::wxTopLevelWindowBase()
+{
+}
+
+bool wxTopLevelWindowBase::Destroy()
+{
+    // delayed destruction: the frame will be deleted during the next idle
+    // loop iteration
+    if ( !wxPendingDelete.Member(this) )
+        wxPendingDelete.Append(this);
+
+    return TRUE;
+}
+
+// ----------------------------------------------------------------------------
+// wxTopLevelWindow size management: we exclude the areas taken by menu/status/toolbars
+// from the client area, so the client area is what's really available for the
+// frame contents
+// ----------------------------------------------------------------------------
+
+void wxTopLevelWindowBase::DoScreenToClient(int *x, int *y) const
+{
+    wxWindow::DoScreenToClient(x, y);
+
+    // We may be faking the client origin.
+    // So a window that's really at (0, 30) may appear
+    // (to wxWin apps) to be at (0, 0).
+    wxPoint pt(GetClientAreaOrigin());
+    *x -= pt.x;
+    *y -= pt.y;
+}
+
+void wxTopLevelWindowBase::DoClientToScreen(int *x, int *y) const
+{
+    // We may be faking the client origin.
+    // So a window that's really at (0, 30) may appear
+    // (to wxWin apps) to be at (0, 0).
+    wxPoint pt1(GetClientAreaOrigin());
+    *x += pt1.x;
+    *y += pt1.y;
+
+    wxWindow::DoClientToScreen(x, y);
+}
+
+
+// ----------------------------------------------------------------------------
+// event handlers
+// ----------------------------------------------------------------------------
+
+// default resizing behaviour - if only ONE subwindow, resize to fill the
+// whole client area
+void wxTopLevelWindowBase::OnSize(wxSizeEvent& WXUNUSED(event))
+{
+    // if we're using constraints - do use them
+#if wxUSE_CONSTRAINTS
+    if ( GetAutoLayout() )
+    {
+        Layout();
+    }
+    else
+#endif // wxUSE_CONSTRAINTS
+    {
+        // do we have _exactly_ one child?
+        wxWindow *child = (wxWindow *)NULL;
+        for ( wxWindowList::Node *node = GetChildren().GetFirst();
+              node;
+              node = node->GetNext() )
+        {
+            wxWindow *win = node->GetData();
+
+            // exclude top level and managed windows (status bar isn't
+            // currently in the children list except under wxMac anyhow, but
+            // it makes no harm to test for it)
+            if ( !win->IsTopLevel() && !IsOneOfBars(win) )
+            {
+                if ( child )
+                {
+                    return;     // it's our second subwindow - nothing to do
+                }
+
+                child = win;
+            }
+        }
+
+        // do we have any children at all?
+        if ( child )
+        {
+            // exactly one child - set it's size to fill the whole frame
+            int clientW, clientH;
+            DoGetClientSize(&clientW, &clientH);
+
+            // for whatever reasons, wxGTK wants to have a small offset - it
+            // probably looks better with it?
+#ifdef __WXGTK__
+            static const int ofs = 1;
+#else
+            static const int ofs = 0;
+#endif
+
+            child->SetSize(ofs, ofs, clientW - 2*ofs, clientH - 2*ofs);
+        }
+    }
+}
+
+// The default implementation for the close window event.
+void wxTopLevelWindowBase::OnCloseWindow(wxCloseEvent& WXUNUSED(event))
+{
+    Destroy();
+}
+
+bool wxTopLevelWindowBase::SendIconizeEvent(bool iconized)
+{
+    wxIconizeEvent event(GetId(), iconized);
+    event.SetEventObject(this);
+
+    return GetEventHandler()->ProcessEvent(event);
+}
+