src/gtk/nonownedwnd.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/nonownedwnd.cpp
   3 // Purpose:     wxGTK implementation of wxNonOwnedWindow.
   4 // Author:      Vadim Zeitlin
   5 // Created:     2011-10-12
   6 // RCS-ID:      $Id: wxhead.cpp,v 1.11 2010-04-22 12:44:51 zeitlin Exp $
   7 // Copyright:   (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // for compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/string.h"
  28 #endif // WX_PRECOMP
  29
  30 #include "wx/gtk/private.h"
  31
  32 #include <gdk/gdk.h>
  33
  34 namespace
  35 {
  36
  37 // helper
  38 bool do_shape_combine_region(GdkWindow* window, const wxRegion& region)
  39 {
  40     if (window)
  41     {
  42         if (region.IsEmpty())
  43         {
  44             gdk_window_shape_combine_mask(window, NULL, 0, 0);
  45         }
  46         else
  47         {
  48             gdk_window_shape_combine_region(window, region.GetRegion(), 0, 0);
  49             return true;
  50         }
  51     }
  52     return false;
  53 }
  54
  55 } // anonymous namespace
  56
  57
  58 // ============================================================================
  59 // wxNonOwnedWindow implementation
  60 // ============================================================================
  61
  62 void wxNonOwnedWindow::GTKHandleRealized()
  63 {
  64     wxNonOwnedWindowBase::GTKHandleRealized();
  65
  66     if (HasFlag(wxFRAME_SHAPED))
  67         SetShape(m_shape);
  68 }
  69
  70 bool wxNonOwnedWindow::SetShape(const wxRegion& region)
  71 {
  72     wxCHECK_MSG( HasFlag(wxFRAME_SHAPED), false,
  73                  wxT("Shaped windows must be created with the wxFRAME_SHAPED style."));
  74
  75     if ( gtk_widget_get_realized(m_widget) )
  76     {
  77         if ( m_wxwindow )
  78             do_shape_combine_region(gtk_widget_get_window(m_wxwindow), region);
  79
  80         return do_shape_combine_region(gtk_widget_get_window(m_widget), region);
  81     }
  82     else // not realized yet
  83     {
  84         // store the shape to set, it will be really set once we're realized
  85         m_shape = region;
  86
  87         // we don't know if we're going to succeed or fail, be optimistic by
  88         // default
  89         return true;
  90     }
  91 }