1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
9 ------------------------------------------------------------------------------
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35 ------------------------------------------------------------------------------
36 -- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
39 -- $Date: 2011/03/23 00:39:28 $
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 Key_Code;
50 procedure xAdd (l : Line_Position; c : Column_Position; s : String);
52 function menu_virtualize (c : Key_Code) return Key_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 : constant Item_Array_Access :=
94 new Item_Array (1 .. animals'Last + 1);
98 procedure xAdd (l : Line_Position; c : Column_Position; s : String) is
100 Add (Line => l, Column => c, Str => s);
104 mcols : Column_Count;
116 xAdd (0, 0, "This is the menu test:");
117 xAdd (2, 0, " Use up and down arrow to move the select bar.");
118 xAdd (3, 0, " 'n' and 'p' act like arrows.");
119 xAdd (4, 0, " 'b' and 'f' scroll up/down (page), 'u' and 'd' (line).");
120 xAdd (5, 0, " Press return to exit.");
123 for i in animals'Range loop
124 items_a.all (i) := New_Item (animals (i).all);
126 items_a.all (animals'Last + 1) := Null_Item;
128 m := New_Menu (items_a);
130 Set_Format (m, Line_Position (animals'Last + 1) / 2, 1);
131 Scale (m, mrows, mcols);
133 menuwin := Create (mrows + 2, mcols + 2, MENU_Y, MENU_X);
134 Set_Window (m, menuwin);
135 Set_KeyPad_Mode (menuwin, True);
136 Box (menuwin); -- 0,0?
138 Set_Sub_Window (m, Derived_Window (menuwin, mrows, mcols, 1, 1));
143 c1 := Getchar (menuwin);
144 r := menu_virtualize (c1);
146 exit when c = Unknown_Request; -- E_UNKNOWN_COMMAND?
147 if c = Request_Denied then
153 Move_Cursor (Line => Lines - 2, Column => 0);
154 Add (Str => "You chose: ");
155 Add (Str => Name (Current (m)));
157 Pause; -- the C version didn't use Pause, it spelled it out
159 Post (m, False); -- unpost, not clear :-(
162 exception when Curses_Exception => null; end;
163 -- menuwin has children so will raise the exception.
168 end ncurses2.menu_test;