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------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding Samples --
-- --
-- ncurses --
-- --
-- B O D Y --
-- --
------------------------------------------------------------------------------
-- Copyright (c) 2000 Free Software Foundation, Inc. --
-- --
-- Permission is hereby granted, free of charge, to any person obtaining a --
-- copy of this software and associated documentation files (the --
-- "Software"), to deal in the Software without restriction, including --
-- without limitation the rights to use, copy, modify, merge, publish, --
-- distribute, distribute with modifications, sublicense, and/or sell --
-- copies of the Software, and to permit persons to whom the Software is --
-- furnished to do so, subject to the following conditions: --
-- --
-- The above copyright notice and this permission notice shall be included --
-- in all copies or substantial portions of the Software. --
-- --
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
-- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
-- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
-- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
-- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
-- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
-- --
-- Except as contained in this notice, the name(s) of the above copyright --
-- holders shall not be used in advertising or otherwise to promote the --
-- sale, use or other dealings in this Software without prior written --
-- authorization. --
------------------------------------------------------------------------------
-- Author: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
-- Version Control
-- $Revision$
-- Binding Version 01.00
------------------------------------------------------------------------------
with ncurses2.util; use ncurses2.util;
with Terminal_Interface.Curses; use Terminal_Interface.Curses;
with Terminal_Interface.Curses.Menus; use Terminal_Interface.Curses.Menus;
with Terminal_Interface.Curses.Mouse; use Terminal_Interface.Curses.Mouse;
procedure ncurses2.menu_test is
function menu_virtualize (c : Key_Code) return Menu_Request_Code;
procedure xAdd (l : Line_Position; c : Column_Position; s : String);
function menu_virtualize (c : Key_Code) return Menu_Request_Code is
begin
case c is
when Character'Pos (newl) | Key_Exit =>
return Menu_Request_Code'Last + 1; -- MAX_COMMAND? TODO
when Character'Pos ('u') =>
return M_ScrollUp_Line;
when Character'Pos ('d') =>
return M_ScrollDown_Line;
when Character'Pos ('b') | Key_Next_Page =>
return M_ScrollUp_Page;
when Character'Pos ('f') | Key_Previous_Page =>
return M_ScrollDown_Page;
when Character'Pos ('n') | Key_Cursor_Down =>
return M_Next_Item;
when Character'Pos ('p') | Key_Cursor_Up =>
return M_Previous_Item;
when Character'Pos (' ') =>
return M_Toggle_Item;
when Key_Mouse =>
return c;
when others =>
Beep;
return c;
end case;
end menu_virtualize;
MENU_Y : constant Line_Count := 8;
MENU_X : constant Column_Count := 8;
type String_Access is access String;
animals : constant array (Positive range <>) of String_Access :=
(new String'("Lions"),
new String'("Tigers"),
new String'("Bears"),
new String'("(Oh my!)"),
new String'("Newts"),
new String'("Platypi"),
new String'("Lemurs"));
items_a : Item_Array_Access := new Item_Array (1 .. animals'Last + 1);
tmp : Event_Mask;
procedure xAdd (l : Line_Position; c : Column_Position; s : String) is
begin
Add (Line => l, Column => c, Str => s);
end xAdd;
mrows : Line_Count;
mcols : Column_Count;
menuwin : Window;
m : Menu;
c1 : Key_Code;
c : Driver_Result;
r : Menu_Request_Code;
begin
tmp := Start_Mouse;
xAdd (0, 0, "This is the menu test:");
xAdd (2, 0, " Use up and down arrow to move the select bar.");
xAdd (3, 0, " 'n' and 'p' act like arrows.");
xAdd (4, 0, " 'b' and 'f' scroll up/down (page), 'u' and 'd' (line).");
xAdd (5, 0, " Press return to exit.");
Refresh;
for i in animals'Range loop
items_a (i) := New_Item (animals (i).all);
end loop;
items_a (animals'Last + 1) := Null_Item;
m := New_Menu (items_a);
Set_Format (m, Line_Position (animals'Last + 1) / 2, 1);
Scale (m, mrows, mcols);
menuwin := Create (mrows + 2, mcols + 2, MENU_Y, MENU_X);
Set_Window (m, menuwin);
Set_KeyPad_Mode (menuwin, True);
Box (menuwin); -- 0,0?
Set_Sub_Window (m, Derived_Window (menuwin, mrows, mcols, 1, 1));
Post (m);
loop
c1 := Getchar (menuwin);
r := menu_virtualize (c1);
c := Driver (m, r);
exit when c = Unknown_Request; -- E_UNKNOWN_COMMAND?
if c = Request_Denied then
Beep;
end if;
-- continue ?
end loop;
Move_Cursor (Line => Lines - 2, Column => 0);
Add (Str => "You chose: ");
Add (Str => Name (Current (m)));
Add (Ch => newl);
Pause; -- the C version didn't use Pause, it spelled it out
Post (m, False); -- unpost, not clear :-(
declare begin
Delete (menuwin);
exception when Curses_Exception => null; end;
-- menuwin has children so will raise the exception.
Delete (m);
tmp := Start_Mouse (No_Events);
end ncurses2.menu_test;
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