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 // Copyright:   (c) Julian Smart
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // for compilers that support precompilation, includes "wx.h".
  12 #include "wx/wxprec.h"
  13
  14 #include "wx/dcmemory.h"
  15
  16 #ifndef WX_PRECOMP
  17     #include "wx/utils.h"
  18     #include "wx/settings.h"
  19 #endif
  20
  21 #include "wx/x11/private.h"
  22 #include "wx/x11/dcmemory.h"
  23
  24 IMPLEMENT_ABSTRACT_CLASS(wxMemoryDCImpl,wxWindowDCImpl)
  25
  26 wxMemoryDCImpl::wxMemoryDCImpl( wxDC *owner )
  27   : wxWindowDCImpl( owner )
  28 {
  29     Init();
  30 }
  31
  32 wxMemoryDCImpl::wxMemoryDCImpl(  wxDC *owner, wxBitmap& bitmap )
  33   : wxWindowDCImpl( owner )
  34 {
  35     Init();
  36     DoSelect(bitmap);
  37 }
  38
  39 wxMemoryDCImpl::wxMemoryDCImpl( wxDC* owner, wxDC *WXUNUSED(dc) )
  40   : wxWindowDCImpl( owner )
  41 {
  42     Init();
  43 }
  44
  45 void wxMemoryDCImpl::Init()
  46 {
  47     m_ok = false;
  48
  49     m_display = (WXDisplay *) wxGlobalDisplay();
  50
  51     int screen = DefaultScreen( wxGlobalDisplay() );
  52     m_cmap = (WXColormap) DefaultColormap( wxGlobalDisplay(), screen );
  53 }
  54
  55 wxMemoryDCImpl::~wxMemoryDCImpl()
  56 {
  57 }
  58
  59 void wxMemoryDCImpl::DoSelect( const wxBitmap& bitmap )
  60 {
  61     Destroy();
  62
  63     m_selected = bitmap;
  64     if (m_selected.IsOk())
  65     {
  66         if (m_selected.GetPixmap())
  67         {
  68             m_x11window = (WXWindow) m_selected.GetPixmap();
  69         }
  70         else
  71         {
  72             m_x11window = m_selected.GetBitmap();
  73         }
  74
  75         m_isMemDC = true;
  76
  77         SetUpDC();
  78     }
  79     else
  80     {
  81         m_ok = false;
  82         m_x11window = NULL;
  83     }
  84 }
  85
  86 void wxMemoryDCImpl::DoGetSize( int *width, int *height ) const
  87 {
  88     if (m_selected.IsOk())
  89     {
  90         if (width) (*width) = m_selected.GetWidth();
  91         if (height) (*height) = m_selected.GetHeight();
  92     }
  93     else
  94     {
  95         if (width) (*width) = 0;
  96         if (height) (*height) = 0;
  97     }
  98 }
  99
 100 const wxBitmap& wxMemoryDCImpl::GetSelectedBitmap() const
 101 {
 102     return m_selected;
 103 }
 104
 105 wxBitmap& wxMemoryDCImpl::GetSelectedBitmap()
 106 {
 107     return m_selected;
 108 }