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 void wxMemoryDC::Init()
  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     Init();
  40 }
  41
  42 wxMemoryDC::~wxMemoryDC()
  43 {
  44 }
  45
  46 void wxMemoryDC::DoSelect( const wxBitmap& bitmap )
  47 {
  48     Destroy();
  49
  50     m_selected = bitmap;
  51     if (m_selected.Ok())
  52     {
  53         if (m_selected.GetPixmap())
  54         {
  55             m_window = (WXWindow) m_selected.GetPixmap();
  56         }
  57         else
  58         {
  59             m_window = m_selected.GetBitmap();
  60         }
  61
  62         m_isMemDC = true;
  63
  64         SetUpDC();
  65     }
  66     else
  67     {
  68         m_ok = false;
  69         m_window = NULL;
  70     }
  71 }
  72
  73 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  74 {
  75     if (m_selected.Ok())
  76     {
  77         if (width) (*width) = m_selected.GetWidth();
  78         if (height) (*height) = m_selected.GetHeight();
  79     }
  80     else
  81     {
  82         if (width) (*width) = 0;
  83         if (height) (*height) = 0;
  84     }
  85 }