22f3361e1c
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@18525 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
106 lines
2.7 KiB
C++
106 lines
2.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/dcbuffer.h
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// Purpose: wxBufferedDC class
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// Author: Ron Lee <ron@debian.org>
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// Modified by:
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// Created: 16/03/02
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// RCS-ID: $Id$
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// Copyright: (c) Ron Lee
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DCBUFFER_H_
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#define _WX_DCBUFFER_H_
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#if defined(__GNUG__) && !defined(__APPLE__)
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#pragma interface "dcbuffer.h"
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#endif
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#include "wx/dcmemory.h"
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// ==============================================================
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// Double buffering helper.
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// --------------------------------------------------------------
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class WXDLLEXPORT wxBufferedDC : public wxMemoryDC
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{
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private:
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// Without the existence of a wxNullDC, this must be
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// a pointer, else it could probably be a reference.
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wxDC *m_dc;
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wxBitmap m_buffer;
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public:
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// Default ctor, must subsequently call Init for
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// two stage construction.
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wxBufferedDC()
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: m_dc( 0 )
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{}
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// Construct a wxBufferedDC using a user supplied buffer.
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wxBufferedDC( wxDC *dc, const wxBitmap &buffer );
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// Construct a wxBufferedDC with an internal buffer of 'area'
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// (where area is usually something like the size of the window
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// being buffered)
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wxBufferedDC( wxDC *dc, const wxSize &area );
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// default copy ctor ok.
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// The usually desired action in the dtor is to blit the buffer.
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~wxBufferedDC();
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// These reimplement the actions of the ctors for
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// two stage creation, but are not used by the ctors
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// themselves to save a few cpu cycles.
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void Init( wxDC *dc, const wxBitmap &bitmap );
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void Init( wxDC *dc, const wxSize &area );
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// Blits the buffer to the dc, and detaches the dc from
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// the buffer. Usually called in the dtor or by the dtor
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// of derived classes if the BufferedDC must blit before
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// the derived class (which may own the dc it's blitting
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// to) is destroyed.
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void UnMask();
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DECLARE_NO_COPY_CLASS(wxBufferedDC)
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};
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// ==============================================================
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// Double buffered PaintDC.
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// --------------------------------------------------------------
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// Creates a double buffered wxPaintDC, optionally allowing the
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// user to specify their own buffer to use.
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class WXDLLEXPORT wxBufferedPaintDC : public wxBufferedDC
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{
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private:
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wxPaintDC m_paintdc;
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public:
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wxBufferedPaintDC( wxWindow *window, const wxBitmap &buffer = wxNullBitmap );
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// default copy ctor ok.
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~wxBufferedPaintDC();
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};
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#endif // _WX_DCBUFFER_H_
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// vi:sts=4:sw=4:et
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