src/msw/panel.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/panel.cpp
   3 // Purpose:     Implementation of wxMSW-specific wxPanel class.
   4 // Author:      Vadim Zeitlin
   5 // Created:     2011-03-18
   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/bitmap.h"
  28     #include "wx/brush.h"
  29     #include "wx/panel.h"
  30 #endif // WX_PRECOMP
  31
  32 // ============================================================================
  33 // implementation
  34 // ============================================================================
  35
  36 bool wxPanel::HasTransparentBackground()
  37 {
  38     for ( wxWindow *win = GetParent(); win; win = win->GetParent() )
  39     {
  40         if ( win->MSWHasInheritableBackground() )
  41             return true;
  42
  43         if ( win->IsTopLevel() )
  44             break;
  45     }
  46
  47     return false;
  48 }
  49
  50 void wxPanel::DoSetBackgroundBitmap(const wxBitmap& bmp)
  51 {
  52     delete m_backgroundBrush;
  53     m_backgroundBrush = bmp.IsOk() ? new wxBrush(bmp) : NULL;
  54
  55     // Our transparent children should use our background if we have it,
  56     // otherwise try to restore m_inheritBgCol to some reasonable value: true
  57     // if we also have non-default background colour or false otherwise.
  58     m_inheritBgCol = bmp.IsOk() || UseBgCol();
  59 }
  60
  61 WXHBRUSH wxPanel::MSWGetCustomBgBrush()
  62 {
  63     if ( m_backgroundBrush )
  64         return (WXHBRUSH)m_backgroundBrush->GetResourceHandle();
  65
  66     return wxPanelBase::MSWGetCustomBgBrush();
  67 }