blob: 9d91cec232053971ac3b2ca378af6eb948ab47c4 [file] [log] [blame]
Constantin Kaplinsky729598c2006-05-25 05:12:25 +00001/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
2 *
3 * This is free software; you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation; either version 2 of the License, or
6 * (at your option) any later version.
7 *
8 * This software is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this software; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
16 * USA.
17 */
18
19// DeviceContext base class, wrapping Windows HDC, plus some
20// helper classes tailored to particular types of DC, such as
21// window and device DCs.
22
23#ifndef __RFB_WIN32_DEVICECONTEXT_H__
24#define __RFB_WIN32_DEVICECONTEXT_H__
25
26#include <windows.h>
27#include <rfb/PixelFormat.h>
28#include <rfb/Rect.h>
29#include <rfb_win32/TCharArray.h>
30
31namespace rfb {
32
33 namespace win32 {
34
35 // Base class, providing methods to get the bounding (clip) box,
36 // and the pixel format, and access to the HDC itself.
37 class DeviceContext {
38 public:
39 DeviceContext() : dc(0) {}
40 virtual ~DeviceContext() {}
41 operator HDC() const {return dc;}
42 PixelFormat getPF() const;
43 static PixelFormat getPF(HDC dc);
44 Rect getClipBox() const;
45 static Rect getClipBox(HDC dc);
46 protected:
47 HDC dc;
48 };
49
50 // -=- DeviceContext that opens a specific display device
51 class DeviceDC : public DeviceContext {
52 public:
53 DeviceDC(const TCHAR* deviceName);
54 ~DeviceDC();
55 };
56
57 // Get a DC for a particular window's client area.
58 class WindowDC : public DeviceContext {
59 public:
60 WindowDC(HWND wnd);
61 virtual ~WindowDC();
62 protected:
63 HWND hwnd;
64 };
65
66 // Create a new DC, compatible with an existing one.
67 class CompatibleDC : public DeviceContext {
68 public:
69 CompatibleDC(HDC existing);
70 virtual ~CompatibleDC();
71 };
72
73 // Create a new DC, compatible with an existing one, and
74 // select the specified bitmap into it.
75 class BitmapDC : public CompatibleDC {
76 public:
77 BitmapDC(HDC hdc, HBITMAP hbitmap);
78 ~BitmapDC();
79 protected:
80 HBITMAP oldBitmap;
81 };
82
83 };
84};
85
86#endif