/*
    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.

*/

#include "gtkmm2ext/utils.h"
#include "gtkmm2ext/rgb_macros.h"
#include "gtkmm2ext/gui_thread.h"

#include "ardour/rc_configuration.h" // for widget prelight preference

#include "waves_icon_button.h"
#include "ardour_ui.h"
#include "global_signals.h"

#include "i18n.h"

#define REFLECTION_HEIGHT 2

using namespace Gdk;
using namespace Gtk;
using namespace Glib;
using namespace PBD;
using std::max;
using std::min;
using namespace std;

WavesIconButton::WavesIconButton ()
	:  WavesButton()
{
}

WavesIconButton::~WavesIconButton()
{
}


void
WavesIconButton::render (cairo_t* cr)
{
	void (*rounded_function)(cairo_t*, double, double, double, double, double);

	switch (_corner_mask) {
	case 0x1: /* upper left only */
		rounded_function = Gtkmm2ext::rounded_top_left_rectangle;
		break;
	case 0x2: /* upper right only */
		rounded_function = Gtkmm2ext::rounded_top_right_rectangle;
		break;
	case 0x3: /* upper only */
		rounded_function = Gtkmm2ext::rounded_top_rectangle;
		break;
		/* should really have functions for lower right, lower left,
		   lower only, but for now, we don't
		*/
	default:
		rounded_function = Gtkmm2ext::rounded_rectangle;
	}

	Glib::RefPtr<Gtk::Style> style = get_style();
	
	Gdk::Color bgcolor = style->get_bg ((get_state() == Gtk::STATE_INSENSITIVE) ? Gtk::STATE_INSENSITIVE : 
											(_hovering ? 
												(_pushed ? 
													Gtk::STATE_ACTIVE :
													Gtk::STATE_PRELIGHT ) :
												(get_active() ? 
													Gtk::STATE_ACTIVE :
													Gtk::STATE_NORMAL)));

	Glib::RefPtr<Gdk::Pixbuf> pixbuf = (get_state() == Gtk::STATE_INSENSITIVE) ? (_inactive_pixbuf ? _inactive_pixbuf : _normal_pixbuf) : 
											(_hovering ? 
												(_pushed ? 
													(_active_pixbuf ? _active_pixbuf : _normal_pixbuf) :
													(_prelight_pixbuf ? _prelight_pixbuf : _normal_pixbuf)) :
												(get_active() ? 
													(_active_pixbuf ? _active_pixbuf : _normal_pixbuf) :
													_normal_pixbuf));

	if ((_left_border_width != 0) ||
		(_top_border_width != 0) ||
		(_right_border_width != 0) ||
		(_bottom_border_width != 0)) {
		cairo_set_source_rgba (cr, _border_color.get_red_p(), _border_color.get_blue_p(), _border_color.get_green_p(), 1);
		rounded_function (cr, 0, 0, get_width(), get_height(), _corner_radius);
		cairo_fill (cr);
	}

	rounded_function (cr, _left_border_width, _top_border_width, get_width()-_left_border_width-_right_border_width, get_height()-_top_border_width-_bottom_border_width, _corner_radius);
	cairo_set_source_rgba (cr, bgcolor.get_red_p(), bgcolor.get_green_p(), bgcolor.get_blue_p(), 1);
	cairo_fill (cr);

	// pixbuf, if any
	if (pixbuf) {
		double x,y;
		x = (get_width() - pixbuf->get_width())/2.0;
		y = (get_height() - pixbuf->get_height())/2.0;

		cairo_rectangle (cr, x, y, pixbuf->get_width(), pixbuf->get_height());
		gdk_cairo_set_source_pixbuf (cr, pixbuf->gobj(), x, y);
		cairo_fill (cr);
	}
}

void
WavesIconButton::set_normal_image (const RefPtr<Gdk::Pixbuf>& img)
{
	_normal_pixbuf = img;
	queue_draw ();
}

void
WavesIconButton::set_active_image (const RefPtr<Gdk::Pixbuf>& img)
{
	_active_pixbuf = img;
	queue_draw ();
}

void
WavesIconButton::set_inactive_image (const RefPtr<Gdk::Pixbuf>& img)
{
	_inactive_pixbuf = img;
	queue_draw ();
}

void
WavesIconButton::set_prelight_image (const RefPtr<Gdk::Pixbuf>& img)
{
	_prelight_pixbuf = img;
	queue_draw ();
}