1. Curses
Hamamatsu.rb #61
Langur(@osarusystem)
Wed Feb 10 2016

2. About Me

3. CC-BY-SA 3.0 from Wikipedia
Name : Langur
Twitter : @osarusystem
Jobs : Embedded Software Engineer
Network Software Engineer
Interestedness : OS/Cipher/FreeBSD/Ruby/
Primates/Making Sweets/
...etc

4. Curses

5. Curses
Curses : A terminal control library
Developer : Ken Arnold
Reference : vi
Used : Rouge/Tin/Jack ... etc
Provide : Interface on CLI like GUI
Not all based applications
employ like this
Support : Linux/BSD/Windows ... etc

6. Ruby curses

7. Ruby curses
def support?(version)
if (version < 2.1)
p “standard library”
else
p “gem library”
end
end

8. How to use
require “curses”
Curses.init_screen
begin
s = “Hello World!”
Curses.setpos(1, 1)
Curses.addstr(s)
Curses.refresh
Curses.getch
ensure
Cursese.close_screen
end
1. 初期化処理
2. Cursesの設定
(省略可)
3. windowの操作
4. 入力待ち
(省略可)
5. 終了処理

9. How to use
require “curses”
Curses.init_screen
begin
s = “Hello World!”
Curses.setpos(1, 1)
Curses.addstr(s)
Curses.refresh
Curses.getch
ensure
Cursese.close_screen
end
1. 初期化処理
2. Cursesの設定
(省略可)
3. windowの操作
4. 入力待ち
(省略可)
5. 終了処理

10. How to use
require “curses”
Curses.init_screen
begin
s = “Hello World!”
Curses.setpos(1, 1)
Curses.addstr(s)
Curses.refresh
Curses.getch
ensure
Cursese.close_screen
end
1. 初期化処理
2. Cursesの設定
(省略可)
3. windowの操作
4. 入力待ち
(省略可)
5. 終了処理

11. How to use
require “curses”
Curses.init_screen
begin
s = “Hello World!”
Curses.setpos(1, 1)
Curses.addstr(s)
Curses.refresh
Curses.getch
ensure
Cursese.close_screen
end
1. 初期化処理
2. Cursesの設定
(省略可)
3. windowの操作
4. 入力待ち
(省略可)
5. 終了処理

12. How to use
require “curses”
Curses.init_screen
begin
s = “Hello World!”
Curses.setpos(1, 1)
Curses.addstr(s)
Curses.refresh
Curses.getch
ensure
Cursese.close_screen
end
1. 初期化処理
2. Cursesの設定
(省略可)
3. windowの操作
4. 入力待ち
(省略可)
5. 終了処理

13. Uncool

14. Delete ‘Curses.’
require “curses”
Curses.init_screen
begin
s = “Hello World!”
Curses.setpos(1, 1)
Curses.addstr(s)
Curses.refresh
Curses.getch
ensure
Curses.close_screen
end
require “curses”
include Curses
init_screen
begin
s = “Hello World!”
setpos(1, 1)
addstr(s)
refresh
getch
ensure
close_screen
end

15. Execute

16. Execute

17. Execute

18. Window

19. Window
stdscr
sub2
sub1
‘init_screan’ create ‘stdscr’.
‘stdscr’ is root window.
‘stdscr’ can create ‘sub window’.

20. Create sub window
begin
s = “stdscr”;ss = “subwindow”
setpos(10, 10);addstr(s)
sub = stdscr.subwin(3, 12, 1, 1)
sub.box(?|, ?-, ?+)
sub.setpos(1, 1);sub.addstr(ss)
sub.refresh
refresh
getch
ensure
sub.close_screen
close_screen
end

21. Execute

22. Execute

23. Next step

24. Next step
• I want to create text editor.
• Help me!
• How to use Git-Hub
• Ruby’s manner
• GTK or Qt

25. Thank you.