1/////////////////////////////////////////////////////////////////////////////
2// Name:        wx/dcmemory.h
3// Purpose:     wxMemoryDC base header
4// Author:      Julian Smart
5// Modified by:
6// Created:
7// Copyright:   (c) Julian Smart
8// RCS-ID:      $Id: dcmemory.h 43843 2006-12-07 05:44:44Z PC $
9// Licence:     wxWindows Licence
10/////////////////////////////////////////////////////////////////////////////
11
12#ifndef _WX_DCMEMORY_H_BASE_
13#define _WX_DCMEMORY_H_BASE_
14
15#include "wx/bitmap.h"
16
17// NOTE: different native implementations of wxMemoryDC will derive from
18//       different wxDC classes (wxPaintDC, wxWindowDC, etc), so that
19//       we cannot derive wxMemoryDCBase from wxDC and then use it as the
20//       only base class for native impl of wxMemoryDC...
21class WXDLLEXPORT wxMemoryDCBase
22{
23public:
24    wxMemoryDCBase() { }
25
26    // avoid warnings about having virtual functions but non virtual dtor
27    virtual ~wxMemoryDCBase() { }
28
29    // select the given bitmap to draw on it
30    void SelectObject(wxBitmap& bmp)
31    {
32        // make sure that the given wxBitmap is not sharing its data with other
33        // wxBitmap instances as its contents will be modified by any drawing
34        // operation done on this DC
35        if (bmp.IsOk())
36            bmp.UnShare();
37
38        DoSelect(bmp);
39    }
40
41    // select the given bitmap for read-only
42    virtual void SelectObjectAsSource(const wxBitmap& bmp)
43    {
44        DoSelect(bmp);
45    }
46
47protected:
48    virtual void DoSelect(const wxBitmap& bmp) = 0;
49};
50
51#if defined(__WXPALMOS__)
52#include "wx/palmos/dcmemory.h"
53#elif defined(__WXMSW__)
54#include "wx/msw/dcmemory.h"
55#elif defined(__WXMOTIF__)
56#include "wx/motif/dcmemory.h"
57#elif defined(__WXGTK20__)
58#include "wx/gtk/dcmemory.h"
59#elif defined(__WXGTK__)
60#include "wx/gtk1/dcmemory.h"
61#elif defined(__WXX11__)
62#include "wx/x11/dcmemory.h"
63#elif defined(__WXMGL__)
64#include "wx/mgl/dcmemory.h"
65#elif defined(__WXDFB__)
66#include "wx/dfb/dcmemory.h"
67#elif defined(__WXMAC__)
68#include "wx/mac/dcmemory.h"
69#elif defined(__WXCOCOA__)
70#include "wx/cocoa/dcmemory.h"
71#elif defined(__WXPM__)
72#include "wx/os2/dcmemory.h"
73#endif
74
75#endif
76    // _WX_DCMEMORY_H_BASE_
77