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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  13 #pragma implementation "dcmemory.h"
  14 #endif
  15
  16 #include "wx/dcmemory.h"
  17 #include "wx/settings.h"
  18 #include "wx/utils.h"
  19
  20 #include "wx/x11/private.h"
  21
  22 IMPLEMENT_DYNAMIC_CLASS(wxMemoryDC,wxWindowDC)
  23
  24 wxMemoryDC::wxMemoryDC() : wxWindowDC()
  25 {
  26     m_ok = FALSE;
  27
  28     m_display = (WXDisplay *) wxGlobalDisplay();
  29
  30     int screen = DefaultScreen( wxGlobalDisplay() );
  31     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  32 }
  33
  34 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  35   : wxWindowDC()
  36 {
  37     m_ok = FALSE;
  38
  39     m_display = (WXDisplay *) wxGlobalDisplay();
  40
  41     int screen = DefaultScreen( wxGlobalDisplay() );
  42     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  43 }
  44
  45 wxMemoryDC::~wxMemoryDC()
  46 {
  47 }
  48
  49 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  50 {
  51     Destroy();
  52
  53     m_selected = bitmap;
  54     if (m_selected.Ok())
  55     {
  56         if (m_selected.GetPixmap())
  57         {
  58             m_window = (WXWindow) m_selected.GetPixmap();
  59         }
  60         else
  61         {
  62             m_window = m_selected.GetBitmap();
  63         }
  64
  65         m_isMemDC = TRUE;
  66
  67         SetUpDC();
  68     }
  69     else
  70     {
  71         m_ok = FALSE;
  72         m_window = NULL;
  73     }
  74 }
  75
  76 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  77 {
  78     if (m_selected.Ok())
  79     {
  80         if (width) (*width) = m_selected.GetWidth();
  81         if (height) (*height) = m_selected.GetHeight();
  82     }
  83     else
  84     {
  85         if (width) (*width) = 0;
  86         if (height) (*height) = 0;
  87     }
  88 }