/*
    Copyright (C) 2010 Paul Davis

    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., 675 Mass Ave, Cambridge, MA 02139, USA.

*/

#ifndef __gtk2_ardour_ardour_button_h__
#define __gtk2_ardour_ardour_button_h__

#include <stdint.h>

#include <gtkmm/activatable.h>

#include "cairo_widget.h"

class ArdourButton : public CairoWidget, Gtk::Activatable
{
  public:
	enum Element {
		Edge = 0x1,
		Body = 0x2,
		Text = 0x4,
		Indicator = 0x8,
		Image = 0x16
	};
	
	static Element default_elements;
	static Element led_default_elements;

	ArdourButton (Element e = default_elements);
	virtual ~ArdourButton ();

	void set_elements (Element);
	Element elements() const { return _elements; }

	void set_corner_radius (float);
	void set_diameter (float);

	void set_text (const std::string&);
	void set_markup (const std::string&);

	void set_led_left (bool yn);
	void set_distinct_led_click (bool yn);

	sigc::signal<void> signal_led_clicked;

  protected:
	void render (cairo_t *);
	void on_size_request (Gtk::Requisition* req);
	void on_size_allocate (Gtk::Allocation&);
	bool on_button_press_event (GdkEventButton*);
	bool on_button_release_event (GdkEventButton*);

  private:
	Glib::RefPtr<Pango::Layout> _layout;
	std::string                 _text;
	Element                     _elements;

	int   _text_width;
	int   _text_height;
	float _diameter;
	float _corner_radius;

	cairo_pattern_t* edge_pattern;
	cairo_pattern_t* fill_pattern;
	cairo_pattern_t* led_inset_pattern;
	cairo_pattern_t* reflection_pattern;

	double text_r;
	double text_g;
	double text_b;
	double text_a;

	double led_r;
	double led_g;
	double led_b;
	double led_a;

	bool _led_left;
	bool _fixed_diameter;
	bool _distinct_led_click;

	void set_colors ();
	void color_handler ();
	void state_handler ();
};

#endif /* __gtk2_ardour_ardour_button_h__ */