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 #include "wx/x11/dcmemory.h"
  24
  25 IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl,wxWindowDCImpl)
  26
  27 wxMemoryDCImpl::wxMemoryDCImpl( wxDC *owner )
  28   : wxWindowDCImpl( owner )
  29 {
  30     Init();
  31 }
  32
  33 wxMemoryDCImpl::wxMemoryDCImpl(  wxDC *owner, wxBitmap& bitmap )
  34   : wxWindowDCImpl( owner )
  35 {
  36     Init();
  37     DoSelect(bitmap);
  38 }
  39
  40 wxMemoryDCImpl::wxMemoryDCImpl( wxDC* owner, wxDC *WXUNUSED(dc) )
  41   : wxWindowDCImpl( owner )
  42 {
  43     Init();
  44 }
  45
  46 void wxMemoryDCImpl::Init()
  47 {
  48     m_ok = false;
  49
  50     m_display = (WXDisplay *) wxGlobalDisplay();
  51
  52     int screen = DefaultScreen( wxGlobalDisplay() );
  53     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  54 }
  55
  56 wxMemoryDCImpl::~wxMemoryDCImpl()
  57 {
  58 }
  59
  60 void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
  61 {
  62     Destroy();
  63
  64     m_selected = bitmap;
  65     if (m_selected.Ok())
  66     {
  67         if (m_selected.GetPixmap())
  68         {
  69             m_x11window = (WXWindow) m_selected.GetPixmap();
  70         }
  71         else
  72         {
  73             m_x11window = m_selected.GetBitmap();
  74         }
  75
  76         m_isMemDC = true;
  77
  78         SetUpDC();
  79     }
  80     else
  81     {
  82         m_ok = false;
  83         m_x11window = NULL;
  84     }
  85 }
  86
  87 void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const
  88 {
  89     if (m_selected.Ok())
  90     {
  91         if (width) (*width) = m_selected.GetWidth();
  92         if (height) (*height) = m_selected.GetHeight();
  93     }
  94     else
  95     {
  96         if (width) (*width) = 0;
  97         if (height) (*height) = 0;
  98     }
  99 }
 100
 101 const wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() const
 102 {
 103     return m_selected;
 104 }
 105
 106 wxBitmap& wxMemoryDCImpl::GetSelectedBitmap()
 107 {
 108     return m_selected;
 109 }