src/x11/dcmemory.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #include "wx/dcmemory.h"
  13 #include "wx/settings.h"
  14 #include "wx/utils.h"
  15
  16 #include "wx/x11/private.h"
  17
  18 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  19
  20 wxMemoryDC::wxMemoryDC() : wxWindowDC()
  21 {
  22     m_ok = FALSE;
  23
  24     m_display = (WXDisplay *) wxGlobalDisplay();
  25
  26     int screen = DefaultScreen( wxGlobalDisplay() );
  27     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  28 }
  29
  30 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  31   : wxWindowDC()
  32 {
  33     m_ok = FALSE;
  34
  35     m_display = (WXDisplay *) wxGlobalDisplay();
  36
  37     int screen = DefaultScreen( wxGlobalDisplay() );
  38     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  39 }
  40
  41 wxMemoryDC::~wxMemoryDC()
  42 {
  43 }
  44
  45 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  46 {
  47     Destroy();
  48
  49     m_selected = bitmap;
  50     if (m_selected.Ok())
  51     {
  52         if (m_selected.GetPixmap())
  53         {
  54             m_window = (WXWindow) m_selected.GetPixmap();
  55         }
  56         else
  57         {
  58             m_window = m_selected.GetBitmap();
  59         }
  60
  61         m_isMemDC = TRUE;
  62
  63         SetUpDC();
  64     }
  65     else
  66     {
  67         m_ok = FALSE;
  68         m_window = NULL;
  69     }
  70 }
  71
  72 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  73 {
  74     if (m_selected.Ok())
  75     {
  76         if (width) (*width) = m_selected.GetWidth();
  77         if (height) (*height) = m_selected.GetHeight();
  78     }
  79     else
  80     {
  81         if (width) (*width) = 0;
  82         if (height) (*height) = 0;
  83     }
  84 }