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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 Robert E. Hak
*
* 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 <stdbool.h>
#include "lcd.h"
#include "menu.h"
#include "button.h"
#include "kernel.h"
#include "debug.h"
struct menu {
int top;
int cursor;
struct menu_items* items;
int itemcount;
};
#define MAX_MENUS 4
#ifdef HAVE_LCD_BITMAP
#define MENU_LINES 6
#else
#define MENU_LINES 2
#endif
static struct menu menus[MAX_MENUS];
static bool inuse[MAX_MENUS] = { false };
static void menu_draw(int m)
{
int i = 0;
lcd_clear_display();
#ifdef HAVE_LCD_BITMAP
lcd_setmargins(0,0);
lcd_setfont(0);
#endif
for (i = menus[m].top;
(i < menus[m].itemcount) && (i<menus[m].top+MENU_LINES);
i++) {
lcd_puts(1, i-menus[m].top, menus[m].items[i].desc);
}
lcd_puts(0, menus[m].cursor - menus[m].top, "-");
lcd_update();
}
/*
* Move the cursor to a particular id,
* target: where you want it to be
*/
static void put_cursor(int m, int target)
{
lcd_puts(0, menus[m].cursor - menus[m].top, " ");
if ( target < menus[m].top ) {
menus[m].top--;
menu_draw(m);
}
else if ( target > MENU_LINES-1 ) {
menus[m].top++;
menu_draw(m);
}
menus[m].cursor = target;
lcd_puts(0, menus[m].cursor - menus[m].top, "-");
}
int menu_init(struct menu_items* mitems, int count)
{
int i;
for ( i=0; i<MAX_MENUS; i++ ) {
if ( !inuse[i] ) {
inuse[i] = true;
break;
}
}
if ( i == MAX_MENUS ) {
DEBUGF("Out of menus!\n");
return -1;
}
menus[i].items = mitems;
menus[i].itemcount = count;
menus[i].top = 0;
menus[i].cursor = 0;
return i;
}
void menu_exit(int m)
{
inuse[m] = false;
}
void menu_run(int m)
{
menu_draw(m);
while(1) {
switch( button_get(true) ) {
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_UP:
#else
case BUTTON_LEFT:
#endif
if (menus[m].cursor == 0) {
/* wrap around to menu bottom */
put_cursor(m, menus[m].itemcount-1);
} else {
/* move up */
put_cursor(m, menus[m].cursor-1);
}
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_DOWN:
#else
case BUTTON_RIGHT:
#endif
if (menus[m].cursor == menus[m].itemcount-1) {
/* wrap around to menu top */
put_cursor(m, 0);
} else {
/* move down */
put_cursor(m, menus[m].cursor+1);
}
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_RIGHT:
#endif
case BUTTON_PLAY:
/* Erase current display state */
lcd_clear_display();
menus[m].items[menus[m].cursor].function();
/* Return to previous display state */
menu_draw(m);
break;
#ifdef HAVE_RECORDER_KEYPAD
case BUTTON_LEFT:
#else
case BUTTON_STOP:
#endif
return;
default:
break;
}
lcd_update();
}
}
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