wxWidgets/include/wx/dcbuffer.h
Gilles Depeyrot af49c4b8a2 disable use of #pragma interface under Mac OS X
GNU compiler included with Mac OS X 10.2 (Jaguar) as well as August Developer
Tools update contain a bug concerning #pragma interface handling that can only
be worked around by not using them (and they are not necessary anyways)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16884 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2002-08-31 11:29:13 +00:00

104 lines
2.7 KiB
C++

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