win32canvas.h

FreeAMP(MP3播放)程序源代码-用来研究MP3解码

/*____________________________________________________________________________

   FreeAmp - The Free MP3 Player

   Copyright (C) 1999 EMusic

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

   $Id: Win32Canvas.h,v 1.5 2000/05/15 09:34:41 robert Exp $
____________________________________________________________________________*/ 

#ifndef INCLUDED_WIN32CANVAS_H__
#define INCLUDED_WIN32CANVAS_H__

#include <windows.h>
#include <assert.h>
#include "Types.h"
#include "Canvas.h"
#include "Win32Window.h"
#include "Win32Bitmap.h"

class Win32Canvas : public Canvas
{
    public:

              Win32Canvas(Win32Window *pParent);
     virtual ~Win32Canvas(void);

			 void  SetParent(Win32Window *pParent);
	 virtual void  Init(void);
     virtual int   RenderText(int iFontHeight, Rect &oClipRect, 
                              string &oText, AlignEnum eAlign,
                              Font *pFont, const Color &oColor,
                              bool bBold, bool bItalic, bool bUnderline);
     virtual int   RenderOffsetText(int iFontHeight, Rect &oClipRect, 
                              string &oText, int iOffset,
                              Font *pFont, const Color &oColor,
                              bool bBold, bool bItalic, bool bUnderline);
     virtual Error Invalidate(Rect &oRect);
     virtual Error Update(void);
     virtual Error BlitRect(Bitmap *pSrcBitmap, Rect &oSrcRect, Rect &oDestRec);
     virtual Error MaskBlitRect(Bitmap *pSrcBitmap, Rect &oSrcRect, Rect &oDestRec);
     virtual void  Paint(HDC hDC, Rect &oRect);
     virtual void  Erase(Rect &oRect);
     virtual HRGN  GetMaskRgn(void);
	 virtual void  SetPalette(HPALETTE hPal);
     virtual void  InitBackgrounds(vector<Panel *> *pPanels);
     
    protected:

	 Win32Bitmap *m_pBufferBitmap;
     Win32Window *m_pParent;
	 HPALETTE     m_hPal;
};

#endif