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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: wx/dcbuffer.h | |
3 | // Purpose: wxBufferedDC class | |
4 | // Author: Ron Lee <ron@debian.org> | |
5 | // Modified by: | |
6 | // Created: 16/03/02 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Ron Lee | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | #ifndef _WX_DCBUFFER_H_ | |
13 | #define _WX_DCBUFFER_H_ | |
14 | ||
af49c4b8 | 15 | #if defined(__GNUG__) && !defined(__APPLE__) |
67e2efca RL |
16 | #pragma interface "dcbuffer.h" |
17 | #endif | |
18 | ||
19 | #include "wx/dcmemory.h" | |
aeb500e6 | 20 | #include "wx/dcclient.h" |
67e2efca RL |
21 | |
22 | ||
23 | // ============================================================== | |
24 | // Double buffering helper. | |
25 | // -------------------------------------------------------------- | |
26 | ||
b8be0b4e | 27 | class WXDLLEXPORT wxBufferedDC : public wxMemoryDC |
67e2efca RL |
28 | { |
29 | private: | |
30 | ||
31 | // Without the existence of a wxNullDC, this must be | |
32 | // a pointer, else it could probably be a reference. | |
33 | ||
34 | wxDC *m_dc; | |
35 | wxBitmap m_buffer; | |
36 | ||
37 | public: | |
38 | ||
39 | // Default ctor, must subsequently call Init for | |
40 | // two stage construction. | |
41 | ||
42 | wxBufferedDC() | |
43 | : m_dc( 0 ) | |
44 | {} | |
45 | ||
46 | // Construct a wxBufferedDC using a user supplied buffer. | |
47 | ||
48 | wxBufferedDC( wxDC *dc, const wxBitmap &buffer ); | |
49 | ||
50 | // Construct a wxBufferedDC with an internal buffer of 'area' | |
51 | // (where area is usually something like the size of the window | |
52 | // being buffered) | |
53 | ||
54 | wxBufferedDC( wxDC *dc, const wxSize &area ); | |
55 | ||
56 | // default copy ctor ok. | |
57 | ||
58 | // The usually desired action in the dtor is to blit the buffer. | |
59 | ||
60 | ~wxBufferedDC(); | |
61 | ||
62 | // These reimplement the actions of the ctors for | |
63 | // two stage creation, but are not used by the ctors | |
64 | // themselves to save a few cpu cycles. | |
65 | ||
66 | void Init( wxDC *dc, const wxBitmap &bitmap ); | |
67 | void Init( wxDC *dc, const wxSize &area ); | |
68 | ||
69 | // Blits the buffer to the dc, and detaches the dc from | |
70 | // the buffer. Usually called in the dtor or by the dtor | |
71 | // of derived classes if the BufferedDC must blit before | |
72 | // the derived class (which may own the dc it's blitting | |
73 | // to) is destroyed. | |
74 | ||
75 | void UnMask(); | |
22f3361e VZ |
76 | |
77 | DECLARE_NO_COPY_CLASS(wxBufferedDC) | |
67e2efca RL |
78 | }; |
79 | ||
80 | ||
81 | // ============================================================== | |
82 | // Double buffered PaintDC. | |
83 | // -------------------------------------------------------------- | |
84 | ||
85 | // Creates a double buffered wxPaintDC, optionally allowing the | |
86 | // user to specify their own buffer to use. | |
87 | ||
b8be0b4e | 88 | class WXDLLEXPORT wxBufferedPaintDC : public wxBufferedDC |
67e2efca RL |
89 | { |
90 | private: | |
91 | ||
92 | wxPaintDC m_paintdc; | |
93 | ||
94 | public: | |
95 | ||
96 | wxBufferedPaintDC( wxWindow *window, const wxBitmap &buffer = wxNullBitmap ); | |
97 | ||
98 | // default copy ctor ok. | |
99 | ||
100 | ~wxBufferedPaintDC(); | |
101 | }; | |
102 | ||
103 | ||
104 | #endif // _WX_DCBUFFER_H_ | |
105 |