recently-used-fonts.h

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Recently used fonts are stored in a separate file in the fontcollections directory under the SYSTEM
 * path. Recently used fonts are managed as a list with the help of a list.
 *
 * Authors:
 *   Vaibhav Malik <vaibhavmalik2018@gmail.com>
 *
 * The contents of this file may be used under the GNU General Public License Version 2 or later.
 *
 */
 
#ifndef INK_RECENTLY_USED_FONTS_H
#define INK_RECENTLY_USED_FONTS_H
 
#include <list>
#include <set>
#include <glibmm/ustring.h>
#include <sigc++/connection.h>
#include <sigc++/signal.h>
 
#include "io/dir-util.h"
#include "io/resource.h"
 
namespace Inkscape {
 
inline const char *RECENTFONTS_FILENAME = "recently_used_fonts.log";
 
class RecentlyUsedFonts {
public:
    enum What {
        All,
        System,
        User
    };
 
    static RecentlyUsedFonts* get();
    ~RecentlyUsedFonts() = default;
 
    // To load the last saved recent font list.
    void init();
    void clear();
 
    // void print_recently_used_fonts();
 
    // Read recently used fonts from file.
    void read(const Glib::ustring& file_name);
    void write_recently_used_fonts();
 
    void change_max_list_size(const int& max_size);
    void prepend_to_list(const Glib::ustring& font_name);
    void pop_front();
    bool get_continuous_streak() const;
    void set_continuous_streak(bool streak);
 
    std::list<Glib::ustring> const &get_fonts() const;
    int get_count() const;
 
    sigc::connection connectUpdate(sigc::slot <void ()> slot) {
        return update_signal.connect(slot);
    }
 
private:
    RecentlyUsedFonts();
    void _read(const Glib::ustring& file_name);
    void _write_recently_used_fonts();
 
    // This list will contain the recently used fonts queue.
    std::list <Glib::ustring> _recent_list;
 
    // Defines the maximum size the recently_used_font_list can have.
    // TODO: Add an option in the preferences to change the maximum size of
    // the recently used font list.
    int _max_size{};
    bool continuous_streak = false;
 
    sigc::signal <void ()> update_signal;
};
 
} // Namespace Inkscape
 
#endif // INK_RECENTLY_USED_FONTS_H
 
/*
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  End:
*/
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