src/generic/panelg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/panelg.cpp
   3 // Purpose:     Generic wxPanel implementation.
   4 // Author:      Vadim Zeitlin
   5 // Created:     2011-03-20
   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/dc.h"
  28     #include "wx/panel.h"
  29 #endif // WX_PRECOMP
  30
  31 #ifdef wxHAS_GENERIC_PANEL
  32
  33 // ============================================================================
  34 // implementation
  35 // ============================================================================
  36
  37 void wxPanel::DoSetBackgroundBitmap(const wxBitmap& bmp)
  38 {
  39     m_bitmapBg = bmp;
  40
  41     if ( m_bitmapBg.IsOk() )
  42     {
  43         Connect(wxEVT_ERASE_BACKGROUND,
  44                 wxEraseEventHandler(wxPanel::OnEraseBackground));
  45     }
  46     else
  47     {
  48         Disconnect(wxEVT_ERASE_BACKGROUND,
  49                    wxEraseEventHandler(wxPanel::OnEraseBackground));
  50     }
  51 }
  52
  53 void wxPanel::OnEraseBackground(wxEraseEvent& event)
  54 {
  55     wxDC& dc = *event.GetDC();
  56
  57     const wxSize clientSize = GetClientSize();
  58     const wxSize bitmapSize = m_bitmapBg.GetSize();
  59
  60     for ( int x = 0; x < clientSize.x; x += bitmapSize.x )
  61     {
  62         for ( int y = 0; y < clientSize.y; y += bitmapSize.y )
  63         {
  64             dc.DrawBitmap(m_bitmapBg, x, y);
  65         }
  66     }
  67 }
  68
  69 #endif // wxHAS_GENERIC_PANEL