1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
9 ------------------------------------------------------------------------------
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35 ------------------------------------------------------------------------------
36 -- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
39 -- $Date: 2004/08/21 21:37:00 $
40 -- Binding Version 01.00
41 ------------------------------------------------------------------------------
42 with ncurses2.util; use ncurses2.util;
44 with Terminal_Interface.Curses; use Terminal_Interface.Curses;
45 with Terminal_Interface.Curses.Menus; use Terminal_Interface.Curses.Menus;
46 with Terminal_Interface.Curses.Mouse; use Terminal_Interface.Curses.Mouse;
48 procedure ncurses2.menu_test is
49 function menu_virtualize (c : Key_Code) return Menu_Request_Code;
50 procedure xAdd (l : Line_Position; c : Column_Position; s : String);
52 function menu_virtualize (c : Key_Code) return Menu_Request_Code is
55 when Character'Pos (newl) | Key_Exit =>
56 return Menu_Request_Code'Last + 1; -- MAX_COMMAND? TODO
57 when Character'Pos ('u') =>
58 return M_ScrollUp_Line;
59 when Character'Pos ('d') =>
60 return M_ScrollDown_Line;
61 when Character'Pos ('b') | Key_Next_Page =>
62 return M_ScrollUp_Page;
63 when Character'Pos ('f') | Key_Previous_Page =>
64 return M_ScrollDown_Page;
65 when Character'Pos ('n') | Key_Cursor_Down =>
67 when Character'Pos ('p') | Key_Cursor_Up =>
68 return M_Previous_Item;
69 when Character'Pos (' ') =>
79 MENU_Y : constant Line_Count := 8;
80 MENU_X : constant Column_Count := 8;
82 type String_Access is access String;
84 animals : constant array (Positive range <>) of String_Access :=
85 (new String'("Lions"),
86 new String'("Tigers"),
88 new String'("(Oh my!)"),
90 new String'("Platypi"),
91 new String'("Lemurs"));
93 items_a : Item_Array_Access := new Item_Array (1 .. animals'Last + 1);
97 procedure xAdd (l : Line_Position; c : Column_Position; s : String) is
99 Add (Line => l, Column => c, Str => s);
103 mcols : Column_Count;
112 r : Menu_Request_Code;
115 xAdd (0, 0, "This is the menu test:");
116 xAdd (2, 0, " Use up and down arrow to move the select bar.");
117 xAdd (3, 0, " 'n' and 'p' act like arrows.");
118 xAdd (4, 0, " 'b' and 'f' scroll up/down (page), 'u' and 'd' (line).");
119 xAdd (5, 0, " Press return to exit.");
122 for i in animals'Range loop
123 items_a (i) := New_Item (animals (i).all);
125 items_a (animals'Last + 1) := Null_Item;
127 m := New_Menu (items_a);
129 Set_Format (m, Line_Position (animals'Last + 1) / 2, 1);
130 Scale (m, mrows, mcols);
132 menuwin := Create (mrows + 2, mcols + 2, MENU_Y, MENU_X);
133 Set_Window (m, menuwin);
134 Set_KeyPad_Mode (menuwin, True);
135 Box (menuwin); -- 0,0?
137 Set_Sub_Window (m, Derived_Window (menuwin, mrows, mcols, 1, 1));
142 c1 := Getchar (menuwin);
143 r := menu_virtualize (c1);
145 exit when c = Unknown_Request; -- E_UNKNOWN_COMMAND?
146 if c = Request_Denied then
152 Move_Cursor (Line => Lines - 2, Column => 0);
153 Add (Str => "You chose: ");
154 Add (Str => Name (Current (m)));
156 Pause; -- the C version didn't use Pause, it spelled it out
158 Post (m, False); -- unpost, not clear :-(
161 exception when Curses_Exception => null; end;
162 -- menuwin has children so will raise the exception.
167 end ncurses2.menu_test;