/*
 *
 * A simple minute minder for presentations. Adjust the time and the number
 * of slides using the arrow keys; start the timing using the space key.
 *
 * Copyright (c) 2008, Diomidis Spinellis
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $Id: minder.pde,v 1.2 2008/03/28 16:53:00 dds Exp $
 *
 */

/** Number of slides in the presentation. */
int presSlides = 15;
/** Duration of the presentation in presMinutes. */
int presMinutes = 30;
/** Time of the presentation's start in milliseconds. */
int start;
/** True if the presentation has started. */
boolean started;

void setup() {
    size(250, 100);
    PFont fontA = loadFont("Arial-Black-32.vlw");
    textFont(fontA);
}

void keyPressed() {
    if (key == ' ') {
	started = true;
	start = millis();
	loop();
    } else if (key == CODED) {
	switch (keyCode) {
	case UP:
	    presSlides++;
	    break;
	case DOWN:
	    if (presSlides > 1)
		presSlides--;
	    break;
	case RIGHT:
	    presMinutes++;
	    break;
	case LEFT:
	    if (presMinutes > 1)
	    presMinutes--;
	    break;
	}
	loop();
    }
}

void draw()
{
    // Clear display area
    fill(255);
    rect(0, 0, width, height);

    // Current time in miliseconds
    int ml = (started ? millis() - start : 0);
    // Duration of presentation in milliseconds
    int presMillis = presMinutes * 60 *  1000;
    // Duration of each slide in milliseconds
    int slideTime = presMillis / presSlides;

    textAlign(LEFT);
    fill(0);

    // Display current time
    int minute = ml / 1000 / 60;
    int second = (ml - minute * 1000 * 60) / 1000;
    text("T " + (minute < 10 ? "0" : "") + minute + ":"
	+ (second < 10 ? "0" : "") + second + "/" + presMinutes + ":00", 5, 40);

    // Display the slide we're should be in
    text("S " + (ml / slideTime + 1) + "/" + presSlides, 5, 80);

    if (started)
	delay(500);
    else
	noLoop();
}