#include <stdlib.h>
#include <stddef.h>
+#include <string.h>
+#include <stdbool.h>
#include <ncurses.h>
#include "headers/menu.h"
+#include "headers/render.h"
#include "headers/utils.h"
+#define MENU_PAD_TOP 2
+#define MENU_PAD_BOTTOM 1
+#define MENU_PAD_LEFT 2
+#define MENU_PAD_RIGHT 1
+
+#define MAX_CONTENTS_LENGTH 256
+
typedef struct MenuItem {
char* contents;
} MenuItem;
typedef struct Menu {
+ char* menu_name;
MenuItem** menu_items;
int menu_length;
int selected_item;
+ int scroll_offset;
+ bool focused;
WINDOW* menu_win;
+ WINDOW* sub_win;
int max_height;
int max_width;
} Menu;
-int render_menu(Menu* menu);
+int swap_item(Menu* menu, int src_index, int dest_index);
+int delete_item(Menu* menu, int index);
+int insert_item(Menu* menu, int index);
MenuItem*
create_menuitem(char* contents)
}
Menu*
-create_menu(MenuItem** item_list)
+create_menu(char* menu_name, MenuItem** item_list)
{
Menu* new_menu;
new_menu = malloc(sizeof(Menu));
- set_menu_items(new_menu, item_list);
+ new_menu->menu_name = menu_name;
+ new_menu->menu_items = item_list;
+ new_menu->menu_length = array_length(MenuItem*, item_list);
new_menu->selected_item = 0;
+ new_menu->scroll_offset = 0;
+ new_menu->focused = false;
set_menu_win(new_menu, stdscr);
return new_menu;
}
int
-set_menu_items(Menu* menu, MenuItem** item_list)
+set_menu_win(Menu* menu, WINDOW* win)
+{
+ int height, width;
+
+ menu->menu_win = win;
+ getmaxyx(menu->menu_win, height, width);
+
+ /* create a subwin (also prob free old subwin?) */
+ menu->max_height = height-MENU_PAD_TOP-MENU_PAD_BOTTOM;
+ menu->max_width = width-MENU_PAD_LEFT-MENU_PAD_RIGHT;
+ menu->sub_win = derwin(
+ menu->menu_win,
+ menu->max_height,
+ menu->max_width,
+ MENU_PAD_TOP,
+ MENU_PAD_LEFT
+ );
+
+ return 0;
+}
+
+MenuItem*
+get_menu_items(Menu* menu)
{
- menu->menu_items = item_list;
- menu->menu_length = array_length(MenuItem*, item_list);
+ return NULL;
+}
+int
+set_menu_focus(Menu* menu, bool focus)
+{
+ menu->focused = focus;
+
return 0;
}
int
-set_menu_win(Menu* menu, WINDOW* win)
+get_selected_item(Menu* menu)
{
- menu->menu_win = win;
- getmaxyx(menu->menu_win, menu->max_height, menu->max_width);
+ return menu->selected_item;
+}
+
+int
+set_selected_item(Menu* menu, int selected_item)
+{
+ menu->selected_item = selected_item;
return 0;
}
-MenuItem*
-get_menu_items(Menu* menu)
+int
+get_menu_length(Menu* menu)
{
- return NULL;
+ return menu->menu_length;
+}
+
+int
+swap_item(Menu* menu, int src_index, int dest_index)
+{
+ MenuItem* temp;
+
+ temp = menu->menu_items[dest_index];
+ menu->menu_items[dest_index] = menu->menu_items[src_index];
+ menu->menu_items[src_index] = temp;
+
+ return 0;
+}
+
+int
+delete_item(Menu* menu, int index)
+{
+ if (index < 0 || index > menu->menu_length-1) return -1;
+
+ int temp_size = (menu->menu_length-index-1)*sizeof(MenuItem*);
+
+ /* might break if last item? */
+ memmove(menu->menu_items[index], menu->menu_items[index+1], temp_size);
+
+ menu->menu_items = realloc(menu->menu_items, menu->menu_length*sizeof(MenuItem*));
+ menu->menu_items[menu->menu_length-1] = 0; // preserve null at end
+
+ menu->menu_length -= 1;
+
+ /* also move the current selected position if it's last */
+ if (menu->selected_item > menu->menu_length-1) {
+ menu->selected_item = menu->menu_length-1;
+ }
+
+ return 0;
+}
+
+int
+insert_item(Menu* menu, int index)
+{ // note, this func does not validate index
+
+ char* new_content;
+ MenuItem* new_menuitem;
+
+ // remember null char
+ /* new_content = malloc((MAX_CONTENTS_LENGTH+1)*sizeof(char)); */
+ new_content = strdup("lmao");
+
+ new_menuitem = create_menuitem(new_content);
+
+ /* resize array and insert */
+ menu->menu_items = realloc(menu->menu_items, (menu->menu_length+2)*sizeof(MenuItem*));
+
+ int temp_size = menu->menu_length-index*sizeof(MenuItem*);
+ memmove(menu->menu_items[index], menu->menu_items[index+1], temp_size);
+
+ menu->menu_items[index] = new_menuitem;
+ menu->menu_items[menu->menu_length+1] = 0; // remember null at end
+ menu->menu_length += 1;
+
+ /* move cursor pos */
+ menu->selected_item = index;
+
+ return 0;
+}
+
+int
+menu_driver(Menu* menu, MenuAction action)
+{
+
+ switch (action) {
+ case MENU_UP:
+ menu->selected_item = menu->selected_item-1 >= 0 ? menu->selected_item-1 : 0;
+ break;
+
+ case MENU_DOWN:
+ menu->selected_item = menu->selected_item+1 <= menu->menu_length-1 ? menu->selected_item+1 : menu->menu_length-1;
+ break;
+
+ case MENU_TOP:
+ menu->selected_item = 0;
+ break;
+
+ case MENU_BOTTOM:
+ menu->selected_item = menu->menu_length-1;
+ break;
+
+ case MENU_MOVE_UP:
+ if (menu->selected_item <= 0) break;
+ swap_item(menu, menu->selected_item, menu->selected_item-1);
+ menu->selected_item -= 1;
+ break;
+
+ case MENU_MOVE_DOWN:
+ if (menu->selected_item >= menu->menu_length-1) break;
+ swap_item(menu, menu->selected_item, menu->selected_item+1);
+ menu->selected_item += 1;
+ break;
+
+ case MENU_DELETE:
+ delete_item(menu, menu->selected_item);
+ wclear(menu->sub_win);
+ break;
+
+ case MENU_APPEND:
+ /* curs_on(); */
+ /* curs_off(); */
+ /* insert_item(menu, menu->selected_item); */
+ insert_item(menu, 0);
+ wclear(menu->sub_win);
+ break;
+
+ default: // This is here for debug, disable later
+ fprintf(stderr, "Invalid menu action");
+ }
+
+ return 0;
}
int
render_menu(Menu* menu)
{
- int cur_line;
+ /* draw outer menu (prob dont need this every render) */
+ int menu_header_color;
+
+ /* menu_header_color = */
+ wattron(menu->menu_win, COLOR_PAIR(
+ (menu->focused == true) ?
+ TS_MENU_SELECTED: TS_MENU_NONSELECTED
+ ));
+ mvwprintw(menu->menu_win, 0, MENU_PAD_LEFT, menu->menu_name);
+ wattroff(menu->menu_win, COLOR_PAIR(0));
- cur_line = 0;
+ /* draw inner menu */
+ int cur_line = 0;
+ for (int i = 0; i < menu->menu_length-menu->scroll_offset; i++) {
- for (int i = 0; i < menu->menu_length; i++) {
+ int wrapped_lines;
+ char* wrapped_text;
- /* wrap text by inserting newlines */
- mvwprintw(menu->menu_win, cur_line, 0, menu->menu_items[i]->contents);
+ /* wrap text by inserting newlines (maxwidth-1 for newline char)*/
+ wrapped_text = wrap_text(menu->menu_items[i]->contents, menu->max_width-1, &wrapped_lines);
/* color selected item */
+ wattron(menu->sub_win, COLOR_PAIR(
+ (i == menu->selected_item && menu->focused == true) ?
+ TS_SELECTED : TS_NONSELECTED
+ ));
+ mvwprintw(menu->sub_win, cur_line, 0, wrapped_text);
+ wattroff(menu->sub_win, COLOR_PAIR(0));
- cur_line += 1;
+ cur_line += wrapped_lines;
+
+ free(wrapped_text);
}
+ wrefresh(menu->sub_win);
+ wrefresh(menu->menu_win);
+
return 0;
}
