persistent_tooltip.h

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/*
 * Copyright (C) 2013-2015 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2015-2016 Robin Gareus <robin@gareus.org>
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#ifndef gtkmm2ext_persistent_tooltip_h
#define gtkmm2ext_persistent_tooltip_h
 
#include <sigc++/trackable.h>
 
#include <gtkmm.h>
#include "gtkmm2ext/visibility.h"
 
namespace Gtkmm2ext {
 
class LIBGTKMM2EXT_API PersistentTooltip : public sigc::trackable
{
  public:
        PersistentTooltip (Gtk::Widget *, bool draggable = false, int margin_y = 0);
        virtual ~PersistentTooltip ();
 
        void set_tip (std::string);
        void set_font (Pango::FontDescription font);
        void set_center_alignment (bool align_to_center);
 
        virtual bool dragging () const;
        static void set_tooltips_enabled (bool en) { _tooltips_enabled = en; }
        static bool tooltips_enabled () { return _tooltips_enabled; }
 
  private:
        static bool _tooltips_enabled;
        static unsigned int _tooltip_timeout;
        bool timeout ();
        void show ();
        void hide ();
        bool enter (GdkEventCrossing *);
        bool leave (GdkEventCrossing *);
        bool press (GdkEventButton *);
        bool release (GdkEventButton *);
 
        Gtk::Widget* _target;
        Gtk::Window* _window;
        Gtk::Label* _label;
 
        bool _draggable;
        bool _maybe_dragging;
        sigc::connection _timeout;
        std::string _tip;
        Pango::FontDescription _font;
        bool _align_to_center;
        int _margin_y;
};
 
}
 
#endif