X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=menu.c;h=997fc158d78c98cb943e143df998e58924d82b32;hb=11705fff523e2180e53a3b91fc92dc65ac7969b7;hp=f077fd2395209a52071cdc0aafc96cc9dcc1a8a3;hpb=7cd288f609ab7d99e5fb5b8da07d2c1b6f32907d;p=taskasaur.git

diff --git a/menu.c b/menu.c
index f077fd2..997fc15 100644
--- a/menu.c
+++ b/menu.c
@@ -1,12 +1,18 @@
 
 #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;
@@ -16,11 +22,13 @@ typedef struct Menu {
     int menu_length;
     int selected_item;
     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);
 
 MenuItem*
 create_menuitem(char* contents)
@@ -39,7 +47,8 @@ create_menu(MenuItem** item_list)
     Menu* new_menu;
 
     new_menu = malloc(sizeof(Menu));
-    set_menu_items(new_menu, item_list);
+    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);
 
@@ -47,51 +56,138 @@ create_menu(MenuItem** item_list)
 }
 
 int
-set_menu_items(Menu* menu, MenuItem** item_list)
+set_menu_win(Menu* menu, WINDOW* win)
 {
-    menu->menu_items = item_list;
-    menu->menu_length = array_length(MenuItem*, item_list);
+    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)
+{
+    return NULL;
+}
+
 int
-set_menu_win(Menu* menu, WINDOW* win)
+swap_item(Menu* menu, int src_index, int dest_index)
 {
-    menu->menu_win = win;
-    getmaxyx(menu->menu_win, menu->max_height, menu->max_width);
+    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;
 }
 
-MenuItem*
-get_menu_items(Menu* menu)
+int
+delete_item(Menu* menu, int index)
 {
-    return NULL;
+    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
-render_menu(Menu* menu)
+menu_driver(Menu* menu, MenuAction action)
 {
-    int cur_line;
 
-    cur_line = 0;
+    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 */
-        wrapped_text = wrap_text(menu->menu_items[i]->contents, menu->max_width, &wrapped_lines);        
+        /* 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->menu_win, COLOR_PAIR(text_color));
-        mvwprintw(menu->menu_win, cur_line, 0, wrapped_text);
-        wattroff(menu->menu_win, COLOR_PAIR(text_color));
+        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;
 
@@ -99,6 +195,9 @@ render_menu(Menu* menu)
 
     }
 
+    wrefresh(menu->sub_win);
+    wrefresh(menu->menu_win);
+
     return 0;
 }