crude scrolling

[taskasaur.git] / menu.c

diff --git a/menu.c b/menu.c
index d66ee07..a7fbbec 100644 (file)
--- a/menu.c
+++ b/menu.c
@@ -19,6 +19,7 @@
 typedef struct MenuItem {
     char* title;
     char* description;
+    void* userdata;
 } MenuItem;
 
 typedef struct Menu {
@@ -32,6 +33,7 @@ typedef struct Menu {
     WINDOW* sub_win;
     int max_height;
     int max_width;
+    void* userdata;
 } Menu;
 
 int swap_item(Menu* menu, int src_index, int dest_index);
@@ -42,15 +44,29 @@ 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 = 0; //TEMP FOR NOW
+    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;
 }
@@ -117,6 +133,12 @@ get_menu_name(Menu* menu)
     return menu->menu_name;
 }
 
+void*
+get_menu_userdata(Menu* menu)
+{
+    return menu->userdata;
+}
+
 char*
 get_menuitem_title(MenuItem* menuitem)
 {
@@ -129,6 +151,12 @@ get_menuitem_descrip(MenuItem* menuitem)
     return menuitem->description;
 }
 
+void*
+get_menuitem_userdata(MenuItem* menuitem)
+{
+    return menuitem->userdata;
+}
+
 
 /* setters */
 int
@@ -157,7 +185,6 @@ int
 set_selected_item(Menu* menu, int selected_item)
 {
     menu->selected_item = selected_item;
-
     return 0;
 }
 
@@ -165,7 +192,27 @@ 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)
+{
+    menuitem->userdata = userdata;
     return 0;
 }
 
@@ -197,8 +244,6 @@ delete_item(Menu* menu, int index)
         menu->selected_item = menu->menu_length-1;
     }
 
-    wclear(menu->sub_win);
-
     return 0;
 }
 
@@ -229,10 +274,6 @@ menu_insert_mode(Menu* menu, int insert_index)
     char temp[MAX_CONTENTS_LENGTH+1]; // remember null
     char* new_contents;
 
-    /* this is bad */
-    wclear(menu->sub_win);
-    render_menu(menu);
-
     curs_on();
 
     /* move cursor to right spot */
@@ -324,9 +365,7 @@ int
 render_menu(Menu* menu)
 {
     /* draw outer menu (prob dont need this every render) */ 
-    int menu_header_color;
-
-    /* menu_header_color = */ 
+    /* wclear(menu->menu_win); */
     wattron(menu->menu_win, COLOR_PAIR(
         (menu->focused == true) ?
         TS_MENU_SELECTED: TS_MENU_NONSELECTED       
@@ -334,31 +373,28 @@ render_menu(Menu* menu)
     mvwprintw(menu->menu_win, 0, MENU_PAD_LEFT, menu->menu_name);
     wattroff(menu->menu_win, COLOR_PAIR(0));
 
-    /* draw inner menu */
-    int cur_line = 0;
-    for (int i = 0; i < menu->menu_length-menu->scroll_offset; i++) {
-
-        int wrapped_lines;
-        char* wrapped_text;
-        
-        /* wrap text by inserting newlines (maxwidth-1 for newline char)*/
-        wrapped_text = wrap_text(menu->menu_items[i]->title, menu->max_width-1, &wrapped_lines); 
+    /* char buf[20]; */
+    /* sprintf(buf, "%d", items_visible(menu)); */
+    /* mvprintw(20, 20, buf); */
 
-        /* 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));
+    /* calculate scroll */
+    int visible;
 
-        cur_line += wrapped_lines;
+    visible = items_visible(menu);
 
-        /* display number of items */
-        /* if (menu->menu_items[i]->) */
+    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;
+    }
 
-        free(wrapped_text);
+    /* 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);
@@ -367,6 +403,62 @@ render_menu(Menu* menu)
     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)
 {