171 lines
4 KiB
C
171 lines
4 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2002 Robert E. Hak
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdbool.h>
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#include "lcd.h"
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#include "menu.h"
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#include "button.h"
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#include "kernel.h"
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#include "debug.h"
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struct menu {
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int top;
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int cursor;
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struct menu_items* items;
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int itemcount;
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};
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#define MAX_MENUS 4
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#ifdef HAVE_LCD_BITMAP
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#define MENU_LINES 6
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#else
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#define MENU_LINES 2
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#endif
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static struct menu menus[MAX_MENUS];
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static bool inuse[MAX_MENUS] = { false };
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static void menu_draw(int m)
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{
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int i = 0;
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lcd_clear_display();
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#ifdef HAVE_LCD_BITMAP
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lcd_setmargins(0,0);
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lcd_setfont(0);
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#endif
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for (i = menus[m].top;
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(i < menus[m].itemcount) && (i<menus[m].top+MENU_LINES);
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i++) {
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lcd_puts(1, i-menus[m].top, menus[m].items[i].desc);
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}
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lcd_puts(0, menus[m].cursor - menus[m].top, "-");
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lcd_update();
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}
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/*
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* Move the cursor to a particular id,
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* target: where you want it to be
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*/
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static void put_cursor(int m, int target)
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{
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lcd_puts(0, menus[m].cursor - menus[m].top, " ");
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if ( target < menus[m].top ) {
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menus[m].top--;
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menu_draw(m);
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}
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else if ( target > MENU_LINES-1 ) {
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menus[m].top++;
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menu_draw(m);
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}
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menus[m].cursor = target;
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lcd_puts(0, menus[m].cursor - menus[m].top, "-");
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}
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int menu_init(struct menu_items* mitems, int count)
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{
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int i;
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for ( i=0; i<MAX_MENUS; i++ ) {
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if ( !inuse[i] ) {
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inuse[i] = true;
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break;
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}
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}
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if ( i == MAX_MENUS ) {
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DEBUGF("Out of menus!\n");
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return -1;
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}
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menus[i].items = mitems;
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menus[i].itemcount = count;
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menus[i].top = 0;
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menus[i].cursor = 0;
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return i;
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}
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void menu_exit(int m)
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{
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inuse[m] = false;
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}
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void menu_run(int m)
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{
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menu_draw(m);
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while(1) {
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switch( button_get(true) ) {
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#ifdef HAVE_RECORDER_KEYPAD
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case BUTTON_UP:
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#else
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case BUTTON_LEFT:
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#endif
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if (menus[m].cursor == 0) {
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/* wrap around to menu bottom */
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put_cursor(m, menus[m].itemcount-1);
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} else {
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/* move up */
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put_cursor(m, menus[m].cursor-1);
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}
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break;
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#ifdef HAVE_RECORDER_KEYPAD
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case BUTTON_DOWN:
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#else
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case BUTTON_RIGHT:
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#endif
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if (menus[m].cursor == menus[m].itemcount-1) {
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/* wrap around to menu top */
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put_cursor(m, 0);
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} else {
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/* move down */
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put_cursor(m, menus[m].cursor+1);
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}
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break;
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#ifdef HAVE_RECORDER_KEYPAD
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case BUTTON_RIGHT:
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#endif
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case BUTTON_PLAY:
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/* Erase current display state */
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lcd_clear_display();
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menus[m].items[menus[m].cursor].function();
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/* Return to previous display state */
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menu_draw(m);
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break;
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#ifdef HAVE_RECORDER_KEYPAD
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case BUTTON_LEFT:
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#else
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case BUTTON_STOP:
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case BUTTON_MENU:
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#endif
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return;
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default:
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break;
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}
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lcd_update();
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}
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}
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