From 30e6d7ecd064b2425f438293787a26d89781548b Mon Sep 17 00:00:00 2001
From: Daniel Liu <mr.picklepinosaur@gmail.com>
Date: Tue, 2 Feb 2021 23:49:06 -0500
Subject: [PATCH] menu focus

---
 config.h         |  4 +++-
 headers/menu.h   |  3 +++
 headers/render.h |  4 +++-
 makefile         |  2 +-
 menu.c           | 35 ++++++++++++++++++++++++++++-------
 render.c         |  2 ++
 taskasaur.c      |  1 +
 7 files changed, 41 insertions(+), 10 deletions(-)

diff --git a/config.h b/config.h
index a38ea94..d805395 100644
--- a/config.h
+++ b/config.h
@@ -19,8 +19,10 @@ static char font[] = "Source Code Pro:size=12";
  *      COLOR_WHITE
 */
 
-static int selected_color = COLOR_CYAN;
+static int selected_color = COLOR_MAGENTA;
 static int non_selected_color = COLOR_WHITE;
+static int menu_selected_color = COLOR_CYAN;
+static int menu_non_selected_color = COLOR_GREEN;
 
 /* KEYS */
 #define BINDING_QUIT 'q'
diff --git a/headers/menu.h b/headers/menu.h
index b1ef7ee..7db3c07 100644
--- a/headers/menu.h
+++ b/headers/menu.h
@@ -2,6 +2,8 @@
 #ifndef __MENU_H__
 #define __MENU_H__
 
+#include <stdbool.h>
+
 /* ncurses doesn't support multiline menu items,
  * so i wrote my own menu lib */
 
@@ -23,6 +25,7 @@ extern MenuItem* create_menuitem(char* contents);
 extern Menu* create_menu(MenuItem** item_list);
 extern int set_menu_win(Menu* menu, WINDOW* win);
 extern MenuItem* get_menu_items(Menu* menu);
+extern int set_menu_focus(Menu* menu, bool focus);
 
 extern int menu_driver(Menu* menu, MenuAction action);
 
diff --git a/headers/render.h b/headers/render.h
index 4232f92..ac094aa 100644
--- a/headers/render.h
+++ b/headers/render.h
@@ -6,7 +6,9 @@
 
 enum TaskasaurColors {
     TS_SELECTED = 1,
-    TS_NONSELECTED
+    TS_NONSELECTED,
+    TS_MENU_SELECTED,
+    TS_MENU_NONSELECTED,
 };
 
 /* the ts is used to not conflict with builtin names */
diff --git a/makefile b/makefile
index eaa0b02..62337a7 100644
--- a/makefile
+++ b/makefile
@@ -18,7 +18,7 @@ utils.o: utils.c headers/utils.h
 
 # include config.h as depend
 
-taskasaur: taskasaur.c parser.o render.o menu.o utils.o
+taskasaur: taskasaur.c parser.o render.o menu.o utils.o config.h
 	$(CC) -o $@ $^ -lncurses -lmd4c
 
 clean:
diff --git a/menu.c b/menu.c
index 997fc15..5c79587 100644
--- a/menu.c
+++ b/menu.c
@@ -2,6 +2,7 @@
 #include <stdlib.h>
 #include <stddef.h>
 #include <string.h>
+#include <stdbool.h>
 #include <ncurses.h>
 
 #include "headers/menu.h"
@@ -21,6 +22,8 @@ typedef struct Menu {
     MenuItem** menu_items;
     int menu_length;
     int selected_item;
+    int scroll_offset;
+    bool focused;
     WINDOW* menu_win;
     WINDOW* sub_win;
     int max_height;
@@ -50,6 +53,8 @@ create_menu(MenuItem** item_list)
     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;
@@ -83,6 +88,14 @@ get_menu_items(Menu* menu)
     return NULL;
 }
 
+int
+set_menu_focus(Menu* menu, bool focus)
+{
+    menu->focused = focus;
+    
+    return 0;
+}
+
 int
 swap_item(Menu* menu, int src_index, int dest_index)
 {
@@ -155,7 +168,7 @@ menu_driver(Menu* menu, MenuAction action)
 
         case MENU_DELETE:
             delete_item(menu, menu->selected_item);
-            wclear(menu->menu_win);
+            wclear(menu->sub_win);
             break;
 
         default: // This is here for debug, disable later
@@ -169,25 +182,33 @@ int
 render_menu(Menu* menu)
 {
     /* draw outer menu (prob dont need this every render) */ 
+    int menu_header_color;
+
+    /* menu_header_color = */ 
+    wattron(menu->menu_win, COLOR_PAIR(
+        (menu->focused == true) ?
+        TS_MENU_SELECTED: TS_MENU_NONSELECTED       
+    ));
     mvwprintw(menu->menu_win, 0, MENU_PAD_LEFT, "TODO");
+    wattroff(menu->menu_win, COLOR_PAIR(0));
 
     /* draw inner menu */
     int cur_line = 0;
-    for (int i = 0; i < menu->menu_length; i++) {
+    for (int i = 0; i < menu->menu_length-menu->scroll_offset; 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));
+        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(text_color));
+        wattroff(menu->sub_win, COLOR_PAIR(0));
 
         cur_line += wrapped_lines;
 
diff --git a/render.c b/render.c
index de22b1d..c4812af 100644
--- a/render.c
+++ b/render.c
@@ -44,6 +44,8 @@ init_tscolors(void)
 {
     init_pair(TS_SELECTED, selected_color, COLOR_BLACK);
     init_pair(TS_NONSELECTED, non_selected_color, COLOR_BLACK);
+    init_pair(TS_MENU_SELECTED, menu_selected_color, COLOR_BLACK);
+    init_pair(TS_MENU_NONSELECTED, menu_non_selected_color, COLOR_BLACK);
 
     return 0;
 }
diff --git a/taskasaur.c b/taskasaur.c
index e201d86..d8aa46d 100644
--- a/taskasaur.c
+++ b/taskasaur.c
@@ -26,6 +26,7 @@ main(int argc, char** argv)
     Menu* menu = create_menu(item_list);
     WINDOW* win = newwin(20, 40, 5, 5);
     set_menu_win(menu, win);
+    set_menu_focus(menu, true);
     box(win, 0, 0);
     refresh();
     wrefresh(win);
-- 
2.20.1