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[wxWidgets.git] / contrib / include / wx / fl / antiflickpl.h
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8e08b761 1/////////////////////////////////////////////////////////////////////////////
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2// Name: antiflickpl.h
3// Purpose: Double-buffering plugin class for reducing flicker
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4// Author: Aleksandras Gluchovas (@Lithuania)
5// Modified by:
6// Created: 23/10/98
7// RCS-ID: $Id$
8// Copyright: (c) Aleksandras Gluchovas
4cbc57f0 9// Licence: wxWindows licence
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10/////////////////////////////////////////////////////////////////////////////
11
12#ifndef __ANTIFLICKPL_G__
13#define __ANTIFLICKPL_G__
14
ab7ce33c 15#if defined(__GNUG__) && !defined(__APPLE__)
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16 #pragma interface "antiflickpl.h"
17#endif
18
19#include "wx/fl/controlbar.h"
20
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21/*
22Implements double-buffering to reduce flicker.
4cbc57f0 23Bitmap and memory DC buffers are shared 'resources' among all instances of
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24antiflicker plugins within the application.
25
4cbc57f0 26Locking for multithreaded applications is not yet implemented.
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27*/
28
510b9edb 29class WXDLLIMPEXP_FL cbAntiflickerPlugin : public cbPluginBase
8e08b761 30{
4cbc57f0 31 DECLARE_DYNAMIC_CLASS( cbAntiflickerPlugin )
8e08b761 32protected:
8e08b761 33
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34 static wxBitmap* mpVertBuf;
35 static wxBitmap* mpHorizBuf;
36 static wxMemoryDC* mpVertBufDc;
37 static wxMemoryDC* mpHorizBufDc;
8e08b761 38
4cbc57f0 39 static int mRefCount;
8e08b761 40
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41 wxDC* mpLRUBufDc; // last-recently-used buffer
42 wxRect mLRUArea; // last-recently-used area
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43
44protected:
4cbc57f0 45 // Finds a suitable buffer. Returns NULL if a suitable buffer is not present.
8e08b761 46
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47 wxDC* FindSuitableBuffer( const wxRect& forArea );
48
49 // Allocates a suitable buffer.
50
51 wxDC* AllocNewBuffer( const wxRect& forArea );
52
53 // Gets the window device context.
54
55 wxDC& GetWindowDC();
56
57 // Gets the client device context.
58
59 wxDC& GetClientDC();
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60public:
61
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62 // Default constructor.
63
64 cbAntiflickerPlugin(void);
65
66 // Constructor taking frame layout panel, and pane mask.
67
68 cbAntiflickerPlugin( wxFrameLayout* pPanel, int paneMask = wxALL_PANES );
69
70 // Destructor.
71
72 virtual ~cbAntiflickerPlugin();
8e08b761 73
4cbc57f0 74 // Handler for plugin event.
8e08b761 75
4cbc57f0 76 void OnStartDrawInArea ( cbStartDrawInAreaEvent& event );
8e08b761 77
4cbc57f0 78 // Handler for plugin event.
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4cbc57f0 80 void OnFinishDrawInArea( cbFinishDrawInAreaEvent& event );
8e08b761 81
4cbc57f0 82 DECLARE_EVENT_TABLE()
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83};
84
85#endif /* __ANTIFLICKPL_G__ */
86