X-Git-Url: https://git.danieliu.xyz/?a=blobdiff_plain;f=menu.c;h=a7fbbecb9994adf74de10743749855f1b8d6d121;hb=6eb3a028f4d79ee91e9d94e9c02932f280cd0ac8;hp=ddcd8ded584575b18eb877d03b46f5cfdacbf528;hpb=82204679646dbb05f22adf6dca9bca18943ea9f6;p=taskasaur.git

diff --git a/menu.c b/menu.c
index ddcd8de..a7fbbec 100644
--- a/menu.c
+++ b/menu.c
@@ -1,61 +1,467 @@
 
 #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* title)
+{
+    MenuItem* new_menuitem;
+    TodoItem* new_userdata;
+
+    new_menuitem = malloc(sizeof(MenuItem));
+    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;
+    Menu* new_menu;
 
     new_menu = malloc(sizeof(Menu));
+    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;
-    WINDOW* menu_win = NULL;
+    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
+get_selected_item(Menu* menu)
+{
+    return menu->selected_item;
+}
+
+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;
+}
 
-    return NULL;
+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, 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;
 }
 
 int
-set_menu_items(Menu* menu, MenuItem** item_list)
+set_selected_item(Menu* menu, int selected_item)
 {
+    menu->selected_item = selected_item;
     return 0;
 }
 
-MenuItem*
-get_menu_items(Menu* menu)
+int
+set_menu_focus(Menu* menu, bool focus)
 {
-    return NULL;
+    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)
+{
+    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;
+
+    curs_on();
+
+    /* move cursor to right spot */
+    ungetstr(menu->menu_items[insert_index]->title);
+    mvwgetnstr(menu->sub_win,
+        insert_index, // account for wrap later too
+        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
+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);
+            break;
+
+        case MENU_APPEND:
+            insert_item(menu, create_blank_menuitem(), menu->menu_length);
+            menu_insert_mode(menu, menu->selected_item);
+            break;
+
+        case MENU_INSERT_ABOVE:
+            insert_item(menu, create_blank_menuitem(), menu->selected_item);
+            menu_insert_mode(menu, menu->selected_item);
+            break;
+
+        case MENU_INSERT_BELOW:
+            insert_item(menu, create_blank_menuitem(), menu->selected_item+1);
+            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");
+    }
+
+    return 0;
 }
 
 int
 render_menu(Menu* menu)
 {
+    /* 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 -= 1;
+    }
 
-    for (int i = 0; i < menu->menu_length; i++) {
-        
-        /* color selected item */
+    /* 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];
+
+    /* 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));
+
+    /* display number of items */
+    if (strlen(curitem->description) > 0) {
+        mvwprintw(menu->sub_win, start_y+1, 0, curitem->description); 
+    }
+
+    return item_height(curitem);
+}
+
+int
+item_height(MenuItem* menuitem)
+{
+    int lines;
+
+    lines = 1;
+    if (strlen(menuitem->description) > 0) {
+        lines += 1;
+    }
+
+    return lines;
+}
+
+int
+items_visible(Menu* menu)
+{
+    int maxheight;
+    int maxwidth; // unused
+
+    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 i;
+}
+
+int
+free_menu(Menu* menu)
+{
+    return 0;
+}