/*******************************************************************************
*23456789 123456789 123456789 123456789 123456789 123456789 123456789 123456789
*       10        20        30        40        50        60        70        80
*
* count-down - An animated count-down rendition drawn with cairo looking like
* the one seen in this video http://www.youtube.com/watch?v=Fuy2W6gY7hQ and
* intended to be used in the kazam screenrecorder
*
* events.c - event-handling
*
* Copyright 2012 Mirco Müller
*
* Authors:
*    Mirco "MacSlow" Müller <macslow@gmail.com>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, 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, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/

#include <math.h>

#include "events.h"
#include "rendering.h"

void
screen_changed_cb (GtkWidget* widget,
				   GdkScreen* oldScreen,
				   gpointer   data)
{
	GdkScreen* screen = gtk_widget_get_screen (widget);      /* not ref'ed*/
	GdkVisual* visual = gdk_screen_get_rgba_visual (screen); /* not ref'ed*/

	if (!visual)
		visual = gdk_screen_get_system_visual (screen);

	gtk_widget_set_visual (widget, visual);
}

gboolean
configure_event_cb (GtkWidget*         widget,
					GdkEventConfigure* event,
					gpointer           data)
{
	return FALSE;
}

gboolean
draw_cb (GtkWidget* widget,
		 cairo_t*   cr,
		 gpointer   data)
{
	static gint angle   = 0;
	GTimer*     timerId = (GTimer*) data;

	gint width  = gtk_widget_get_allocated_width (widget);
	gint height = gtk_widget_get_allocated_height (widget);

	static cairo_surface_t* surface = NULL;

	if (!surface)
	{
		surface = create_drop_shadow (width, height, 10);
		/*cairo_surface_write_to_png (surface, "/tmp/surface.png");*/
	}

	gdouble secondsf = g_timer_elapsed (timerId, NULL);
	gint seconds = ((gint) (trunc (secondsf)) % 5);
	render (cr, width, height, (gdouble) angle, 5 - seconds, surface);
	angle = (gint) ((trunc (secondsf) - secondsf) * 360.0);

	if (5 - seconds == 1)
		gtk_widget_set_opacity (widget,
								1.0 + (trunc (secondsf) - secondsf));
	else
		gtk_widget_set_opacity (widget, 1.0);

	return TRUE;
}

gboolean
delete_event_cb (GtkWidget* widget,
				 GdkEvent*  event,
				 gpointer   data)
{
	gtk_main_quit ();
	return FALSE;
}

gboolean
timeout_cb (gpointer data)
{
	GtkWidget* window = GTK_WIDGET (data);
	gtk_widget_queue_draw (window);

	return TRUE;
}