add some ncurses snippets

2026-03-21 09:11:03 +03:00 · 2020-12-21 16:58:32 +03:00
parent 1af9716058
commit dbe431a121
14 changed files with 899 additions and 0 deletions
--- a/Ncurses/menu.c
+++ b/Ncurses/menu.c
@@ -0,0 +1,94 @@
+#include <stdio.h>
+#include <ncurses.h>
+
+#define WIDTH 30
+#define HEIGHT 10
+
+int startx = 0;
+int starty = 0;
+
+char *choices[] = {
+            "Choice 1",
+            "Choice 2",
+            "Choice 3",
+            "Choice 4",
+            "Exit",
+          };
+int n_choices = sizeof(choices) / sizeof(char *);
+void print_menu(WINDOW *menu_win, int highlight);
+
+int main()
+{	WINDOW *menu_win;
+    int highlight = 1;
+    int choice = 0;
+    int c;
+
+    initscr();
+    clear();
+    noecho();
+    cbreak();	/* Line buffering disabled. pass on everything */
+    startx = (80 - WIDTH) / 2;
+    starty = (24 - HEIGHT) / 2;
+
+    menu_win = newwin(HEIGHT, WIDTH, starty, startx);
+    keypad(menu_win, TRUE);
+    mvprintw(0, 0, "Use arrow keys to go up and down, Press enter to select a choice");
+    refresh();
+    print_menu(menu_win, highlight);
+    while(1)
+    {	c = wgetch(menu_win);
+        switch(c)
+        {	case KEY_UP:
+                if(highlight == 1)
+                    highlight = n_choices;
+                else
+                    --highlight;
+                break;
+            case KEY_DOWN:
+                if(highlight == n_choices)
+                    highlight = 1;
+                else
+                    ++highlight;
+                break;
+            case 10:
+                choice = highlight;
+                break;
+            default:
+                mvprintw(24, 0, "Charcter pressed is = %3d", c);
+                if(c > 32 && c < 256) printw(" (%c)", c);
+                clrtoeol();
+                refresh();
+                break;
+        }
+        print_menu(menu_win, highlight);
+        if(choice != 0)	/* User did a choice come out of the infinite loop */
+            break;
+    }
+    mvprintw(23, 0, "You chose choice %d with choice string %s\n", choice, choices[choice - 1]);
+    clrtoeol();
+    refresh();
+    sleep(1);
+    endwin();
+    return 0;
+}
+
+
+void print_menu(WINDOW *menu_win, int highlight)
+{
+    int x, y, i;
+
+    x = 2;
+    y = 2;
+    box(menu_win, 0, 0);
+    for(i = 0; i < n_choices; ++i)
+    {	if(highlight == i + 1) /* High light the present choice */
+        {	wattron(menu_win, A_REVERSE);
+            mvwprintw(menu_win, y, x, "%s", choices[i]);
+            wattroff(menu_win, A_REVERSE);
+        }
+        else
+            mvwprintw(menu_win, y, x, "%s", choices[i]);
+        ++y;
+    }
+    wrefresh(menu_win);
+}