X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=menu.c;h=621607bb1ec15c91d390d7e512711e2f076aa0c6;hb=abf215afaba441f488105fb9d30d95264c2e5850;hp=777e33481993f9cb4d1d38641872e7645da79f0c;hpb=a5efc91e9cfa40607a2064b8662047788a246ab1;p=taskasaur.git

diff --git a/menu.c b/menu.c
index 777e334..621607b 100644
--- a/menu.c
+++ b/menu.c
@@ -1,73 +1,308 @@
 
 #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;
+    char* title;
+    char* description;
+    void* userdata;
 } 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;
+    void* userdata;
 } Menu;
 
-int render_menu(Menu* menu);
+int swap_item(Menu* menu, int src_index, int dest_index);
+
+/* insert mode */
+int menu_insert_mode(Menu* menu, int insert_index);
+
+/* prob temp for now */
+MenuItem* create_blank_menuitem(void);
+
+/* rendering stuff */
+int render_item(Menu* menu, int item_index, int start_y);
+int item_height(MenuItem* menuitem);
+int items_visible(Menu* menu);
 
 MenuItem*
-create_menuitem(char* contents)
+create_menuitem(char* title)
 {
     MenuItem* new_menuitem;
+    TodoItem* new_userdata;
 
     new_menuitem = malloc(sizeof(MenuItem));
-    new_menuitem->contents = contents;
+    new_menuitem->title = title;
+    new_menuitem->description = strdup(""); //TEMP FOR NOW
+
+    new_userdata = malloc(sizeof(TodoItem));
+    new_userdata->item_name = title;
+    new_userdata->description = strdup("");
+    new_userdata->due = strdup("");
+    new_userdata->subtask_list = malloc(0);
+    new_userdata->subtask_count = 0;
+    
+    new_menuitem->userdata = new_userdata;
 
     return new_menuitem;
 }
 
+MenuItem*
+create_blank_menuitem(void)
+{
+    return create_menuitem(strdup(""));
+}
+
 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;
 }
 
+/* getters */
+WINDOW*
+get_menu_win(Menu* menu)
+{
+    return menu->menu_win;
+}
+
+WINDOW*
+get_menu_subwin(Menu* menu)
+{
+    return menu->sub_win;
+}
+
+MenuItem*
+get_menu_item(Menu* menu, int index)
+{
+    if (index < 0 || index >= menu->menu_length) return NULL;
+
+    return menu->menu_items[index];
+}
+
 int
-set_menu_items(Menu* menu, MenuItem** item_list)
+get_selected_item(Menu* menu)
 {
-    menu->menu_items = item_list;
-    menu->menu_length = array_length(MenuItem*, item_list);
+    return menu->selected_item;
+}
 
-    return 0;
+int
+get_menu_length(Menu* menu)
+{
+    return menu->menu_length;
 }
 
+char*
+get_menu_name(Menu* menu)
+{
+    return menu->menu_name;
+}
+
+void*
+get_menu_userdata(Menu* menu)
+{
+    return menu->userdata;
+}
+
+char*
+get_menuitem_title(MenuItem* menuitem)
+{
+    return menuitem->title;
+}
+
+char*
+get_menuitem_descrip(MenuItem* menuitem)
+{
+    return menuitem->description;
+}
+
+void*
+get_menuitem_userdata(MenuItem* menuitem)
+{
+    return menuitem->userdata;
+}
+
+
+/* setters */
 int
 set_menu_win(Menu* menu, WINDOW* win)
 {
+    int height, width;
+
     menu->menu_win = win;
-    getmaxyx(menu->menu_win, menu->max_height, menu->max_width);
+    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)
+int
+set_selected_item(Menu* menu, int selected_item)
+{
+    menu->selected_item = selected_item;
+    return 0;
+}
+
+int
+set_menu_focus(Menu* menu, bool focus)
+{
+    menu->focused = focus;
+    return 0;
+}
+
+int
+set_menu_userdata(Menu* menu, void* userdata)
+{
+    menu->userdata = userdata;
+    return 0;
+}
+
+int
+set_menuitem_descrip(MenuItem* menuitem, char* descrip)
+{
+    menuitem->description = descrip;
+    return 0;
+}
+
+int
+set_menuitem_userdata(MenuItem* menuitem, void* userdata)
 {
-    return NULL;
+    menuitem->userdata = userdata;
+    return 0;
+}
+
+
+int
+swap_item(Menu* menu, int src_index, int dest_index)
+{
+    ar_swap_item((void**)menu->menu_items, src_index, dest_index);
+
+    return 0;
+}
+
+int
+delete_item(Menu* menu, int index)
+{
+    if (index < 0 || index > menu->menu_length-1) return -1;
+
+    for (int i = index; i <= menu->menu_length-1; i++) {
+        menu->menu_items[i] = menu->menu_items[i+1];
+    }
+
+    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, MenuItem* menuitem, int index)
+{ // note, this func does not validate index
+
+    /* resize array and insert */
+    menu->menu_items = realloc(menu->menu_items, (menu->menu_length+2)*sizeof(MenuItem*));
+
+    for (int i = menu->menu_length; i > index; i--) {
+        menu->menu_items[i] = menu->menu_items[i-1];
+    }
+
+    menu->menu_items[index] = 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_insert_mode(Menu* menu, int insert_index)
+{
+    char temp[MAX_CONTENTS_LENGTH+1]; // remember null
+    char* new_contents;
+    int insert_pos;
+
+    curs_on();
+
+    // account for multiline items
+    insert_pos = menu->scroll_offset;
+    for (int i = 0; i < insert_index; i++) {
+        insert_pos += item_height(menu->menu_items[i]);
+    }
+
+    /* move cursor to right spot */
+    ungetstr(menu->menu_items[insert_index]->title);
+    mvwgetnstr(menu->sub_win,
+        insert_pos, 
+        0,
+        temp,
+        MAX_CONTENTS_LENGTH
+    );
+    curs_off();
+
+    /* copy out */
+    new_contents = strdup(temp);
+    menu->menu_items[insert_index]->title = new_contents;
+
+    /* delete if empty - maybe move this to a cleanup stage */
+    if (strlen(new_contents) == 0) {
+        delete_item(menu, insert_index);
+    }
+
+    return 0;
 }
 
 int
@@ -78,16 +313,58 @@ menu_driver(Menu* menu, MenuAction 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;
-        default:
+
+        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);
+            break;
+
+        case MENU_APPEND:
+            insert_item(menu, create_blank_menuitem(), menu->menu_length);
+            render_menu(menu); // refresh after inserting
+            menu_insert_mode(menu, menu->selected_item);
+            break;
+
+        case MENU_INSERT_ABOVE:
+            insert_item(menu, create_blank_menuitem(), menu->selected_item);
+            render_menu(menu);
+            menu_insert_mode(menu, menu->selected_item);
+            break;
+
+        case MENU_INSERT_BELOW:
+            insert_item(menu, create_blank_menuitem(), menu->selected_item+1);
+            render_menu(menu);
+            menu_insert_mode(menu, menu->selected_item); // inserted item is cur now
+            break;
+
+        case MENU_EDIT:
+            menu_insert_mode(menu, menu->selected_item);
+            break;
+
+        default: // This is here for debug, disable later
             fprintf(stderr, "Invalid menu action");
     }
 
@@ -97,33 +374,100 @@ menu_driver(Menu* menu, MenuAction action)
 int
 render_menu(Menu* menu)
 {
-    int cur_line;
+    /* draw outer menu (prob dont need this every render) */ 
+    /* wclear(menu->menu_win); */
+    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));
+
+    /* char buf[20]; */
+    /* sprintf(buf, "%d", items_visible(menu)); */
+    /* mvprintw(20, 20, buf); */
+
+    /* calculate scroll */
+    int visible;
+
+    visible = items_visible(menu);
+
+    if (menu->selected_item > menu->scroll_offset+visible) {
+        // may be dangerous, assumes render after every action
+        menu->scroll_offset += 1;
+    } else if (menu->selected_item < menu->scroll_offset) {
+        menu->scroll_offset = menu->scroll_offset-1;
+        if (menu->scroll_offset < 0) menu->scroll_offset = 0;
+    }
+
+    /* draw inner menu */
+    wclear(menu->sub_win);
+
+    int curline = 0;
+    for (int i = menu->scroll_offset; i < menu->menu_length; i++) {
+        curline += render_item(menu, i, curline);
+    }
+
+    wrefresh(menu->sub_win);
+    wrefresh(menu->menu_win);
+
+    return 0;
+}
+
+int
+render_item(Menu* menu, int item_index, int start_y)
+{
+    MenuItem* curitem;
+    curitem = menu->menu_items[item_index];
 
-    cur_line = 0;
+    /* color selected item */
+    wattron(menu->sub_win, COLOR_PAIR(
+       (item_index == menu->selected_item && menu->focused == true) ? 
+       TS_SELECTED : TS_NONSELECTED
+    ));
+    mvwprintw(menu->sub_win, start_y, 0, curitem->title);
+    wattroff(menu->sub_win, COLOR_PAIR(0));
 
-    for (int i = 0; i < menu->menu_length; i++) {
+    /* display number of items */
+    if (strlen(curitem->description) > 0) {
+        mvwprintw(menu->sub_win, start_y+1, 0, curitem->description); 
+    }
 
-        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);        
+    return item_height(curitem);
+}
 
-        /* color selected item */
-        text_color = (i == menu->selected_item) ? TS_SELECTED : TS_NONSELECTED;
+int
+item_height(MenuItem* menuitem)
+{
+    int lines;
 
-        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));
+    lines = 1;
+    if (strlen(menuitem->description) > 0) {
+        lines += 1;
+    }
+
+    return lines;
+}
 
-        cur_line += wrapped_lines;
+int
+items_visible(Menu* menu)
+{
+    int maxheight;
+    int maxwidth; // unused
 
-        free(wrapped_text);
+    getmaxyx(menu->sub_win, maxheight, maxwidth);
+
+    int i = menu->scroll_offset;
+    int lines = 0;
+    for (; i < menu->menu_length; i++) {
+
+        lines += item_height(menu->menu_items[i]);
+
+        if (lines >= maxheight) break;
 
     }
 
-    return 0;
+    return i;
 }
 
 int