source: neercs/trunk/src/screensaver.c @ 2995

/*
 *  neercs        console-based window manager
 *  Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
 *                2008 Jean-Yves Lamoureux <jylam@lnxscene.org>
 *                All Rights Reserved
 *
 *  $Id: main.c 2401 2008-06-15 12:50:12Z jylam $
 *
 *  This program is free software. It comes without any warranty, to
 *  the extent permitted by applicable law. You can redistribute it
 *  and/or modify it under the terms of the Do What The Fuck You Want
 *  To Public License, Version 2, as published by Sam Hocevar. See
 *  http://sam.zoy.org/wtfpl/COPYING for more details.
 */

#include "config.h"

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <signal.h>
#include <sys/wait.h>
#include <errno.h>
#include <unistd.h>

#include <caca.h>
#include <caca.h>

#include "neercs.h"


void screensaver_init(struct screen_list *screen_list)
{

    screensaver_flying_toasters_init(screen_list);
}

void screensaver_kill(struct screen_list *screen_list)
{

    screensaver_flying_toasters_kill(screen_list);
}

void draw_screensaver(struct screen_list *screen_list)
{
    screensaver_flying_toasters(screen_list);
}




/* Flying Toasters */

#define COUNT 15
#define PRECISION 100

char toaster1_text[] = {
"      __._ \n"
"   .-'== _',\n"
"  <|_= .-'  |\n"
"   | --|   \\'.-_ \n"
"   |   | \\  \" _.\n"
"    `-_|.-\\_.-\n"};

char toaster2_text[] = {
"      __._ \n"
"   .-'== _',\n"
"  \\|_= .-'  |\n"
"   | --|  __'-.\n"
"   |   | ___.-\n"
"    `-_|.-\n"
};

char toaster3_text[] = {
"   _- __._\n"
"  /.-'== _',_.-.\n"
"  \\|_= .-'/  _.'\n"
"   | --| / .-\n"
"   |   |  _.|\n"
"    `-_|.-\n"};

struct flying_toaster
{
    int x[COUNT], y[COUNT], s[COUNT];
    caca_canvas_t **toaster;
};

void screensaver_flying_toasters_init(struct screen_list *screen_list)
{
    struct flying_toaster *flying_toaster;
    int w = caca_get_canvas_width(screen_list->cv);
    int h = caca_get_canvas_height(screen_list->cv);
    int i;

    flying_toaster = malloc(sizeof(struct flying_toaster));
    flying_toaster->toaster = (caca_canvas_t **)malloc(sizeof(caca_canvas_t*)*3);


    flying_toaster->toaster[0] = caca_create_canvas(0, 0);
    flying_toaster->toaster[1] = caca_create_canvas(0, 0);
    flying_toaster->toaster[2] = caca_create_canvas(0, 0);


    caca_import_memory(flying_toaster->toaster[0],
                        toaster1_text,
                        strlen(toaster1_text), "ansi");
    caca_import_memory(flying_toaster->toaster[1],
                        toaster2_text,
                        strlen(toaster2_text), "ansi");
    caca_import_memory(flying_toaster->toaster[2],
                        toaster3_text,
                        strlen(toaster3_text), "ansi");

    for(i = 0; i < COUNT; i++)
    {
        flying_toaster->x[i] = (rand()%w) * PRECISION;
        flying_toaster->y[i] = (rand()%h) * PRECISION;
        flying_toaster->s[i] = (rand()%3) * PRECISION;
    }


    screen_list->screensaver_data = flying_toaster;
}

void screensaver_flying_toasters_kill(struct screen_list *screen_list)
{
    struct flying_toaster *flying_toaster = screen_list->screensaver_data;

    caca_free_canvas(flying_toaster->toaster[0]);
    caca_free_canvas(flying_toaster->toaster[1]);
    caca_free_canvas(flying_toaster->toaster[2]);
    free(flying_toaster->toaster);
    free(flying_toaster);
    screen_list->screensaver_data = NULL;
}

void screensaver_flying_toasters(struct screen_list *screen_list)
{
    struct flying_toaster *d = screen_list->screensaver_data;
    int i, w, h;
    if(!d) return;

    w = caca_get_canvas_width(screen_list->cv);
    h = caca_get_canvas_height(screen_list->cv);


    caca_set_color_ansi(screen_list->cv, CACA_WHITE, CACA_BLACK);
    caca_clear_canvas(screen_list->cv);



    for(i = 0; i < COUNT; i++)
    {
        caca_blit(screen_list->cv, d->x[i]/PRECISION, d->y[i]/PRECISION, d->toaster[d->s[i]/PRECISION], NULL);

        d->x[i]-=40;
        d->y[i]+=10;

        if((d->x[i]/PRECISION) + caca_get_canvas_width(d->toaster[d->s[i]/PRECISION])<=0)
            d->x[i] = ((rand()%w)+w) * PRECISION;
        if((d->y[i]/PRECISION)>=h)
            d->y[i] = ((rand()%h)-h) * PRECISION;

        d->s[i] = ((d->s[i]+24)%(3*PRECISION));
    }
}