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//
// 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"
/**
The Fl_ICO_Image class supports loading, caching, and drawing of Windows icon (.ico) files.
*/
class FL_EXPORT Fl_ICO_Image : public Fl_BMP_Image {
public:
/** Windows ICONDIRENTRY structure */
struct IconDirEntry {
int bWidth; ///< Image width
int bHeight; ///< Image height
int bColorCount; ///< Number of colors (0 if ≥ 8bpp)
int bReserved; ///< Reserved
int wPlanes; ///< Color Planes
int wBitCount; ///< Bits per pixel
int dwBytesInRes; ///< Resource size in bytes
int dwImageOffset; ///< Offset to the image
};
Fl_ICO_Image(const char *filename, int id = -1, const unsigned char *data = NULL, const size_t datasize = 0);
~Fl_ICO_Image();
/** Returns the number of icons of various resolutions present in the ICO object. */
int idcount() const { return idcount_; }
/** Returns the array of idcount() loaded IconDirEntry structures. */
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
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