Fl_ICO_Image.H

//
// ICO image header file for the Fast Light Tool Kit (FLTK).
//
// Copyright 2022-2023 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file.  If this
// file is missing or damaged, see the license at:
//
//     http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
//     http://www.fltk.org/str.php
//
 
// https://en.wikipedia.org/wiki/ICO_(file_format)
// http://www.daubnet.com/en/file-format-ico
 
#ifndef Fl_ICO_Image_H
#  define Fl_ICO_Image_H
#  include "Fl_BMP_Image.H"

class FL_EXPORT Fl_ICO_Image : public Fl_BMP_Image {
 
public:
   struct IconDirEntry {
    int bWidth;         
    int bHeight;        
    int bColorCount;    
    int bReserved;      
    int wPlanes;        
    int wBitCount;      
    int dwBytesInRes;   
    int dwImageOffset;  
  };
 
  Fl_ICO_Image(const char *filename, int id = -1, const unsigned char *data = NULL, const size_t datasize = 0);
  ~Fl_ICO_Image();

  int idcount() const { return idcount_; }

  const IconDirEntry * icondirentry() const { return icondirentry_; }
 
private:
  int idcount_;
  struct IconDirEntry *icondirentry_;
  void load_ico_(class Fl_Image_Reader &rdr, int id);
};
 
#endif // Fl_ICO_Image_H