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( const wxBitmap& bitmap )
  27     : wxWindowDC()
  28 {
  29     m_ok = false;
  30
  31     m_display = (WXDisplay *) wxGlobalDisplay();
  32
  33     int screen = DefaultScreen( wxGlobalDisplay() );
  34     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  35
  36     if ( bitmap.IsOk() )
  37         SelectObject(bitmap);
  38 }
  39
  40 wxMemoryDC::wxMemoryDC( wxDC *WXUNUSED(dc) )
  41   : wxWindowDC()
  42 {
  43     m_ok = false;
  44
  45     m_display = (WXDisplay *) wxGlobalDisplay();
  46
  47     int screen = DefaultScreen( wxGlobalDisplay() );
  48     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  49 }
  50
  51 wxMemoryDC::~wxMemoryDC()
  52 {
  53 }
  54
  55 void wxMemoryDC::SelectObject( const wxBitmap& bitmap )
  56 {
  57     Destroy();
  58
  59     m_selected = bitmap;
  60     if (m_selected.Ok())
  61     {
  62         if (m_selected.GetPixmap())
  63         {
  64             m_window = (WXWindow) m_selected.GetPixmap();
  65         }
  66         else
  67         {
  68             m_window = m_selected.GetBitmap();
  69         }
  70
  71         m_isMemDC = true;
  72
  73         SetUpDC();
  74     }
  75     else
  76     {
  77         m_ok = false;
  78         m_window = NULL;
  79     }
  80 }
  81
  82 void wxMemoryDC::DoGetSize( int *width, int *height ) const
  83 {
  84     if (m_selected.Ok())
  85     {
  86         if (width) (*width) = m_selected.GetWidth();
  87         if (height) (*height) = m_selected.GetHeight();
  88     }
  89     else
  90     {
  91         if (width) (*width) = 0;
  92         if (height) (*height) = 0;
  93     }
  94 }