rockbox/apps/plugins/credits.c

/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2002 by Robert Hak <rhak at ramapo.edu>
 *
 * All files in this archive are subject to the GNU General Public License.
 * See the file COPYING in the source tree root for full license agreement.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
#include "plugin.h"

void roll_credits(void);
const char* const credits[] = {
#include "credits.raw" /* generated list of names from docs/CREDITS */
};

static struct plugin_api* rb;

enum plugin_status plugin_start(struct plugin_api* api, void* parameter)
{
    int j = 0;
    int btn;

    TEST_PLUGIN_API(api);
    (void)parameter;
    rb = api;

    rb->show_logo();
#ifdef HAVE_LCD_CHARCELLS
    rb->lcd_double_height(false);
#endif

    for (j = 0; j < 10; j++) {
        rb->sleep((HZ*2)/10);

        btn = rb->button_get(false);
        if (btn !=  BUTTON_NONE && !(btn & BUTTON_REL))
            return PLUGIN_OK;
    }

    roll_credits();

    return PLUGIN_OK;
}

#ifdef HAVE_LCD_CHARCELLS
void roll_credits(void)
{
    int numnames = sizeof(credits)/sizeof(char*);
    int curr_name = 0;
    int curr_len = rb->strlen(credits[0]);
    int curr_index = 0;
    int curr_line = 0;
    int name, len, new_len, line, x;

    while (1)
    {
        rb->lcd_clear_display();

        name = curr_name;
        x = -curr_index;
        len = curr_len;
        line = curr_line;

        while (x < 11)
        {
            int x2;

            if (x < 0)
                rb->lcd_puts(0, line, credits[name] - x);
            else
                rb->lcd_puts(x, line, credits[name]);

            if (++name >= numnames)
                break;
            line ^= 1;

            x2 = x + len/2;
            if ((unsigned)x2 < 11)
                rb->lcd_putc(x2, line, '*');

            new_len = rb->strlen(credits[name]);
            x += MAX(len/2 + 2, len - new_len/2 + 1);
            len = new_len;
        }
        /* abort on keypress */
        if (rb->button_get_w_tmo(HZ/8) & BUTTON_REL)
            return;

        if (++curr_index >= curr_len)
        {
            if (++curr_name >= numnames)
                break;
            new_len = rb->strlen(credits[curr_name]);
            curr_index -= MAX(curr_len/2 + 2, curr_len - new_len/2 + 1);
            curr_len = new_len;
            curr_line ^= 1;
        }
    }
}
#else

static int minisin[]={
#if 1
    1, 2, 2, 3, 3, 3, 2, 2, 1, 0, 0, 0, 0, 0, 0, 0
#else
    1, 2, 3, 4, 4, 4, 3, 2, 1, 0, 0, -1, -1, -1, 0, 0, 
#endif
};

void roll_credits(void)
{
    int i;
    int line = 0;
    int numnames = sizeof(credits)/sizeof(char*);
    char buffer[40];

    int y=LCD_HEIGHT;

    int height;
    int width;
    int sinstep=0;

    rb->lcd_setfont(FONT_UI);

    rb->lcd_getstringsize((unsigned char *)"A", &width, &height);

    while(1) {
        rb->lcd_clear_display();
        for ( i=0; i <= (LCD_HEIGHT-y)/height; i++ )
            rb->lcd_putsxy(0, i*height+y,
                           (unsigned char *)(line+i<numnames?credits[line+i]:""));
        rb->snprintf(buffer, sizeof(buffer), " [Credits] %2d/%2d  ",
                 line+1, numnames);
        rb->lcd_set_drawmode(DRMODE_SOLID|DRMODE_INVERSEVID);
        rb->lcd_fillrect(0, 0, LCD_WIDTH, height);
        rb->lcd_set_drawmode(DRMODE_SOLID);
        rb->lcd_putsxy(0, 0, (unsigned char *)buffer);
        rb->lcd_update();

        if (rb->button_get_w_tmo(HZ/20) & BUTTON_REL)
            return;

        y-= minisin[sinstep];
        sinstep++;
        sinstep &= 0x0f; /* wrap */

        if(y<0) {
            line++;
            if(line >= numnames)
                break;
            y+=height;
        }

    }
}
#endif