1cc8c8b74e
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@25567 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: generic/dcbuffer.cpp
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// Purpose: wxBufferedDC class
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// Author: Ron Lee <ron@debian.org>
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// Modified by: Vadim Zeitlin (refactored, added bg preservation)
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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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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma implementation "dcbuffer.h"
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#endif
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/window.h"
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#endif
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#include "wx/dcbuffer.h"
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// ----------------------------------------------------------------------------
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// Double buffering helper.
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// ----------------------------------------------------------------------------
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wxBufferedDC::wxBufferedDC(wxDC *dc, const wxBitmap& buffer)
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: m_dc( dc ),
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m_buffer( buffer )
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{
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UseBuffer();
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}
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wxBufferedDC::wxBufferedDC(wxDC *dc, const wxSize& area, int flags)
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: m_dc( dc ),
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m_buffer( area.GetWidth(), area.GetHeight() )
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{
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UseBuffer();
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SaveBg(area, flags);
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}
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void wxBufferedDC::Init( wxDC *dc, const wxBitmap &buffer )
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{
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wxASSERT_MSG( m_dc == 0 && m_buffer == wxNullBitmap,
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_T("wxBufferedDC already initialised") );
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m_dc = dc;
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m_buffer = buffer;
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UseBuffer();
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}
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void wxBufferedDC::Init(wxDC *dc, const wxSize& area, int flags)
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{
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Init(dc, wxBitmap(area.GetWidth(), area.GetHeight()));
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SaveBg(area, flags);
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}
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void wxBufferedDC::UnMask()
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{
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wxASSERT_MSG( m_dc != 0,
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_T("No underlying DC associated with wxBufferedDC (anymore)") );
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m_dc->Blit( 0, 0, m_buffer.GetWidth(), m_buffer.GetHeight(), this, 0, 0 );
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m_dc = NULL;
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}
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