static_bitmap.h

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#ifndef STATIC_BITMAP_CLASS
#define STATIC_BITMAP_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : static_bitmap                                                     *
*  Author : Chris Koeritz                                                     *
*  Partially based on source code by Jorge Lodos (lodos@cigb.edu.cu)          *
*                                                                             *
*  Purpose:                                                                   *
*                                                                             *
*    Provides an MFC object for ensuring that bitmaps used as static objects  *
*  retain the proper colors, even in the highly broken 256 color mode for     *
*  resources.  This is done by realizing the palette for the bitmap.          *
*                                                                             *
*******************************************************************************
* Copyright (c) 1998-$now By Author.  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 is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "mfc_dll.h"

#include <basis/portable.h>

// forward.
class bitmap;

class MFC_EXTENSIONS_CLASS_STYLE static_bitmap : public CStatic
{
public:
  static_bitmap();
  virtual ~static_bitmap();

  bool valid() const;
    // returns true if this object seems fine.

  bool load(const istring &name);
    // loads the bitmap from a file with the "name".

  bool load(HINSTANCE instance, const char *resource);
    // loads a bitmap out of the "instance" using the "resource" id specified.
    // if this is a numerical resource identifier, use MAKEINTRESOURCE to
    // pass it in.

  void update();
    // draws the static bitmap.

  bool realize_palette(bool force_background);
    // causes the palette for the static bitmap to be realized into the
    // device context such that the colors are now what they should be.

protected:
  bitmap *_dib;

  void paint(bool valid);
    // redraws the static bitmap if "valid" is true.  otherwise an X marks
    // the spot.

  // mfc monstrosities...
  //{{AFX_MSG(static_bitmap)
  afx_msg HBRUSH CtlColor(CDC* pDC, UINT nCtlColor);
  afx_msg BOOL OnQueryNewPalette();
  afx_msg void OnPaletteChanged(CWnd* pFocusWnd);
  //}}AFX_MSG
  DECLARE_MESSAGE_MAP()

  // forbidden.
  static_bitmap(const static_bitmap &);
  static_bitmap &operator =(static_bitmap &);
};

#endif

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