src/x11/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/x11/dcmemory.cpp
   3 // Purpose:     wxMemoryDC class
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // for compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #include "wx/dcmemory.h"
  16
  17 #ifndef WX_PRECOMP
  18     #include "wx/utils.h"
  19     #include "wx/settings.h"
  20 #endif
  21
  22 #include "wx/x11/private.h"
  23
  24 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  25
  26 wxMemoryDC::wxMemoryDC() : wxWindowDC()
  27 {
  28     m_ok = false;
  29
  30     m_display = (WXDisplay *) wxGlobalDisplay();
  31
  32     int screen = DefaultScreen( wxGlobalDisplay() );
  33     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  34 }
  35
  36 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  37   : wxWindowDC()
  38 {
  39     m_ok = false;
  40
  41     m_display = (WXDisplay *) wxGlobalDisplay();
  42
  43     int screen = DefaultScreen( wxGlobalDisplay() );
  44     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  45 }
  46
  47 wxMemoryDC::~wxMemoryDC()
  48 {
  49 }
  50
  51 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  52 {
  53     Destroy();
  54
  55     m_selected = bitmap;
  56     if (m_selected.Ok())
  57     {
  58         if (m_selected.GetPixmap())
  59         {
  60             m_window = (WXWindow) m_selected.GetPixmap();
  61         }
  62         else
  63         {
  64             m_window = m_selected.GetBitmap();
  65         }
  66
  67         m_isMemDC = true;
  68
  69         SetUpDC();
  70     }
  71     else
  72     {
  73         m_ok = false;
  74         m_window = NULL;
  75     }
  76 }
  77
  78 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  79 {
  80     if (m_selected.Ok())
  81     {
  82         if (width) (*width) = m_selected.GetWidth();
  83         if (height) (*height) = m_selected.GetHeight();
  84     }
  85     else
  86     {
  87         if (width) (*width) = 0;
  88         if (height) (*height) = 0;
  89     }
  90 }