X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=menu.c;h=997fc158d78c98cb943e143df998e58924d82b32;hb=11705fff523e2180e53a3b91fc92dc65ac7969b7;hp=07605c90e4264e16babde09dcd676495a7cacb26;hpb=ef44630f65b5f9238efd8555cc8c5fb5bbf97ea1;p=taskasaur.git

diff --git a/menu.c b/menu.c
index 07605c9..997fc15 100644
--- a/menu.c
+++ b/menu.c
@@ -1,28 +1,79 @@
 
+#include <stdlib.h>
 #include <stddef.h>
+#include <string.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
 
 typedef struct MenuItem {
     char* contents;
 } MenuItem;
 
 typedef struct Menu {
-    MenuItem* menu_items;
+    MenuItem** menu_items;
     int menu_length;
     int selected_item;
+    WINDOW* menu_win;
+    WINDOW* sub_win;
+    int max_height;
+    int max_width;
 } Menu;
 
+int swap_item(Menu* menu, int src_index, int dest_index);
+int delete_item(Menu* menu, int index);
+
+MenuItem*
+create_menuitem(char* contents)
+{
+    MenuItem* new_menuitem;
+
+    new_menuitem = malloc(sizeof(MenuItem));
+    new_menuitem->contents = contents;
+
+    return new_menuitem;
+}
 
 Menu* 
-create_menu(MenuItem* item_list)
+create_menu(MenuItem** item_list)
 {
-    return NULL;
+    Menu* new_menu;
+
+    new_menu = malloc(sizeof(Menu));
+    new_menu->menu_items = item_list;
+    new_menu->menu_length = array_length(MenuItem*, item_list);
+    new_menu->selected_item = 0;
+    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;
 }
 
@@ -31,3 +82,128 @@ get_menu_items(Menu* menu)
 {
     return NULL;
 }
+
+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*);
+    MenuItem* temp[temp_size];
+
+    /* might break if last item? */
+    memcpy(temp, menu->menu_items[index+1], temp_size);
+    memcpy(menu->menu_items[index], temp, 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
+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->menu_win);
+            break;
+
+        default: // This is here for debug, disable later
+            fprintf(stderr, "Invalid menu action");
+    }
+
+    return 0;
+}
+
+int
+render_menu(Menu* menu)
+{
+    /* draw outer menu (prob dont need this every render) */ 
+    mvwprintw(menu->menu_win, 0, MENU_PAD_LEFT, "TODO");
+
+    /* draw inner menu */
+    int cur_line = 0;
+    for (int i = 0; i < menu->menu_length; i++) {
+
+        int wrapped_lines;
+        char* wrapped_text;
+        int text_color;
+        
+        /* 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 */
+        text_color = (i == menu->selected_item) ? TS_SELECTED : TS_NONSELECTED;
+
+        wattron(menu->sub_win, COLOR_PAIR(text_color));
+        mvwprintw(menu->sub_win, cur_line, 0, wrapped_text);
+        wattroff(menu->sub_win, COLOR_PAIR(text_color));
+
+        cur_line += wrapped_lines;
+
+        free(wrapped_text);
+
+    }
+
+    wrefresh(menu->sub_win);
+    wrefresh(menu->menu_win);
+
+    return 0;
+}
+
+int
+free_menu(Menu* menu)
+{
+    return 0;
+}
+