2b5f62a0b2
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18040 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: antiflickpl.h
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// Purpose: Double-buffering plugin class for reducing flicker
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// Author: Aleksandras Gluchovas (@Lithuania)
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// Modified by:
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// Created: 23/10/98
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// RCS-ID: $Id$
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// Copyright: (c) Aleksandras Gluchovas
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef __ANTIFLICKPL_G__
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#define __ANTIFLICKPL_G__
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#if defined(__GNUG__) && !defined(__APPLE__)
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#pragma interface "antiflickpl.h"
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#endif
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#include "wx/fl/controlbar.h"
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/*
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Implements double-buffering to reduce flicker.
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Bitmap and memory DC buffers are shared 'resources' among all instances of
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antiflicker plugins within the application.
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Locking for multithreaded applications is not yet implemented.
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*/
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class WXFL_DECLSPEC cbAntiflickerPlugin : public cbPluginBase
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{
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DECLARE_DYNAMIC_CLASS( cbAntiflickerPlugin )
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protected:
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static wxBitmap* mpVertBuf;
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static wxBitmap* mpHorizBuf;
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static wxMemoryDC* mpVertBufDc;
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static wxMemoryDC* mpHorizBufDc;
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static int mRefCount;
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wxDC* mpLRUBufDc; // last-recently-used buffer
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wxRect mLRUArea; // last-recently-used area
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protected:
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// Finds a suitable buffer. Returns NULL if a suitable buffer is not present.
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wxDC* FindSuitableBuffer( const wxRect& forArea );
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// Allocates a suitable buffer.
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wxDC* AllocNewBuffer( const wxRect& forArea );
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// Gets the window device context.
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wxDC& GetWindowDC();
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// Gets the client device context.
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wxDC& GetClientDC();
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public:
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// Default constructor.
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cbAntiflickerPlugin(void);
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// Constructor taking frame layout panel, and pane mask.
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cbAntiflickerPlugin( wxFrameLayout* pPanel, int paneMask = wxALL_PANES );
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// Destructor.
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virtual ~cbAntiflickerPlugin();
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// Handler for plugin event.
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void OnStartDrawInArea ( cbStartDrawInAreaEvent& event );
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// Handler for plugin event.
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void OnFinishDrawInArea( cbFinishDrawInAreaEvent& event );
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DECLARE_EVENT_TABLE()
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};
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#endif /* __ANTIFLICKPL_G__ */
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