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menu.c
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/**
menu.c: openchronos-ng menu system
Copyright (C) 2012 Angelo Arrifano <[email protected]>
Copyright (C) 2016 Benjamin Sølberg <[email protected]>
http://github.com/BenjaminSoelberg/openchronos-ng-elf
This file is part of openchronos-ng.
openchronos-ng is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
openchronos-ng is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
**/
// *************************************************************************************************
// Initialization and control of application.
// *************************************************************************************************
// *************************************************************************************************
// Include section
#include "menu.h"
#include "drivers/ports.h"
#include "drivers/display.h"
/* The head of the linked list holding menu items */
static struct menu *menu_head;
/* Menu mode stuff */
static struct {
uint8_t enabled:1; /* is menu mode enabled? */
struct menu *item; /* the currently active menu item */
} menumode;
/* Menu edit mode stuff */
static struct {
uint8_t enabled:1; /* is edit mode enabled? */
uint8_t pos:7; /* the position for selected item */
void (* complete_fn)(void); /* call this fn when editmode exits */
struct menu_editmode_item *items; /* vector of editmode items */
} menu_editmode;
/***************************************************************************
************************ USER INPUT / MAIN MENU ***************************
**************************************************************************/
static void editmode_handler(void)
{
/* STAR button exits edit mode */
if (ports_button_pressed(PORTS_BTN_STAR, 0)) {
/* deselect item */
menu_editmode.items[menu_editmode.pos].deselect();
menu_editmode.complete_fn();
menu_editmode.enabled = 0;
} else if (ports_button_pressed(PORTS_BTN_NUM, 0)) {
/* deselect current item */
menu_editmode.items[menu_editmode.pos].deselect();
/* select next item */
menu_editmode.pos++;
if (! menu_editmode.items[menu_editmode.pos].set)
menu_editmode.pos = 0;
menu_editmode.items[menu_editmode.pos].select();
} else if (ports_button_pressed(PORTS_BTN_UP, 0)) {
menu_editmode.items[menu_editmode.pos].set(1);
} else if (ports_button_pressed(PORTS_BTN_DOWN, 0)) {
menu_editmode.items[menu_editmode.pos].set(-1);
}
}
static void menumode_handler(void)
{
if (ports_button_pressed(PORTS_BTN_STAR, 0)) {
/* exit mode mode */
menumode.enabled = 0;
/* clear both lines but keep symbols! */
display_clear(0, 1);
display_clear(0, 2);
/* turn off up/down symbols */
display_symbol(0, LCD_SYMB_ARROW_UP, SEG_OFF);
display_symbol(0, LCD_SYMB_ARROW_DOWN, SEG_OFF);
/* stop blinking name of current selected module */
display_chars(0, LCD_SEG_L2_4_0, NULL, BLINK_OFF);
/* activate item */
if (menumode.item->activate_fn)
menumode.item->activate_fn();
} else if (ports_button_pressed(PORTS_BTN_UP, 0)) {
menumode.item = menumode.item->next;
display_clear(0, 2);
display_chars(0, LCD_SEG_L2_4_0, menumode.item->name, SEG_SET);
} else if (ports_button_pressed(PORTS_BTN_DOWN, 0)) {
menumode.item = menumode.item->prev;
display_clear(0, 2);
display_chars(0, LCD_SEG_L2_4_0, menumode.item->name, SEG_SET);
}
}
static void menumode_enable(void)
{
/* deactivate current menu item */
if (menumode.item->deactivate_fn)
menumode.item->deactivate_fn();
/* enable edit mode */
menumode.enabled = 1;
/* show MENU in the first line */
display_chars(0, LCD_SEG_L1_3_0, "MENU", SEG_SET);
/* turn on up/down symbols */
display_symbol(0, LCD_SYMB_ARROW_UP, SEG_ON);
display_symbol(0, LCD_SYMB_ARROW_DOWN, SEG_ON);
/* show up blinking name of current selected item */
display_chars(0, LCD_SEG_L2_4_0, NULL, BLINK_ON);
display_chars(0, LCD_SEG_L2_4_0, menumode.item->name, SEG_SET);
}
void menu_check_buttons(void)
{
if (menu_editmode.enabled) {
editmode_handler();
} else if (menumode.enabled) {
menumode_handler();
} else {
if (ports_button_pressed(PORTS_BTN_LSTAR, 1)) {
if (menumode.item->lstar_btn_fn)
menumode.item->lstar_btn_fn();
} else if (ports_button_pressed(PORTS_BTN_STAR, !!(menumode.item->lstar_btn_fn))) {
menumode_enable();
} else if (ports_button_pressed(PORTS_BTN_LNUM, 1)) {
if (menumode.item->lnum_btn_fn)
menumode.item->lnum_btn_fn();
} else if (ports_button_pressed(PORTS_BTN_NUM, !!(menumode.item->lnum_btn_fn))) {
if (menumode.item->num_btn_fn)
menumode.item->num_btn_fn();
} else if (ports_button_pressed(PORTS_BTN_UP | PORTS_BTN_DOWN, 0)) {
if (menumode.item->updown_btn_fn)
menumode.item->updown_btn_fn();
} else if (ports_button_pressed(PORTS_BTN_UP, 0)) {
if (menumode.item->up_btn_fn)
menumode.item->up_btn_fn();
} else if (ports_button_pressed(PORTS_BTN_DOWN, 0)) {
if (menumode.item->down_btn_fn)
menumode.item->down_btn_fn();
}
}
ports_buttons_clear();
}
struct menu* menu_add_entry(char const *name,
void (*up_btn_fn)(void),
void (*down_btn_fn)(void),
void (*num_btn_fn)(void),
void (*lstar_btn_fn)(void),
void (*lnum_btn_fn)(void),
void (*updown_btn_fn)(void),
void (*activate_fn)(void),
void (*deactivate_fn)(void))
{
struct menu **menu_hd = &menu_head;
struct menu *menu_p;
if (! *menu_hd) {
/* Head is empty, create new menu item linked to itself */
menu_p = (struct menu *) malloc(sizeof(struct menu));
menu_p->next = menu_p;
menu_p->prev = menu_p;
*menu_hd = menu_p;
/* There wasnt any menu active, so we activate this one */
menumode.item = menu_p;
activate_fn();
} else {
/* insert new item before head */
menu_p = (struct menu *) malloc(sizeof(struct menu));
menu_p->next = (*menu_hd);
menu_p->prev = (*menu_hd)->prev;
(*menu_hd)->prev = menu_p;
menu_p->prev->next = menu_p;
}
menu_p->name = name;
menu_p->up_btn_fn = up_btn_fn;
menu_p->down_btn_fn = down_btn_fn;
menu_p->num_btn_fn = num_btn_fn;
menu_p->lstar_btn_fn = lstar_btn_fn;
menu_p->lnum_btn_fn = lnum_btn_fn;
menu_p->updown_btn_fn = updown_btn_fn;
menu_p->activate_fn = activate_fn;
menu_p->deactivate_fn = deactivate_fn;
return menu_p;
}
void menu_editmode_start(void (* complete_fn)(void),
struct menu_editmode_item *items)
{
menu_editmode.pos = 0;
menu_editmode.items = items;
menu_editmode.complete_fn = complete_fn;
menu_editmode.enabled = 1;
/* select the first item */
menu_editmode.items[0].select();
}