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------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding Samples --
-- --
-- ncurses --
-- --
-- B O D Y --
-- --
------------------------------------------------------------------------------
-- Copyright (c) 2000-2009,2011 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: 1.9 $
-- $Date: 2011/03/19 12:03:08 $
-- Binding Version 01.00
------------------------------------------------------------------------------
with ncurses2.util; use ncurses2.util;
with Terminal_Interface.Curses; use Terminal_Interface.Curses;
with Ada.Strings.Unbounded;
with Interfaces.C;
with Terminal_Interface.Curses.Aux;
procedure ncurses2.slk_test is
procedure myGet (Win : Window := Standard_Window;
Str : out Ada.Strings.Unbounded.Unbounded_String;
Len : Integer := -1);
procedure myGet (Win : Window := Standard_Window;
Str : out Ada.Strings.Unbounded.Unbounded_String;
Len : Integer := -1)
is
use Ada.Strings.Unbounded;
use Interfaces.C;
use Terminal_Interface.Curses.Aux;
function Wgetnstr (Win : Window;
Str : char_array;
Len : int) return int;
pragma Import (C, Wgetnstr, "wgetnstr");
-- FIXME: how to construct "(Len > 0) ? Len : 80"?
Ask : constant Interfaces.C.size_t := Interfaces.C.size_t'Val (Len + 80);
Txt : char_array (0 .. Ask);
begin
Txt (0) := Interfaces.C.char'First;
if Wgetnstr (Win, Txt, Txt'Length) = Curses_Err then
raise Curses_Exception;
end if;
Str := To_Unbounded_String (To_Ada (Txt, True));
end myGet;
use Int_IO;
use Ada.Strings.Unbounded;
c : Key_Code;
buf : Unbounded_String;
c2 : Character;
fmt : Label_Justification := Centered;
tmp : Integer;
begin
c := CTRL ('l');
loop
Move_Cursor (Line => 0, Column => 0);
c2 := Code_To_Char (c);
case c2 is
when Character'Val (Character'Pos ('l') mod 16#20#) => -- CTRL('l')
Erase;
Switch_Character_Attribute (Attr => (Bold_Character => True,
others => False));
Add (Line => 0, Column => 20,
Str => "Soft Key Exerciser");
Switch_Character_Attribute (On => False,
Attr => (Bold_Character => True,
others => False));
Move_Cursor (Line => 2, Column => 0);
P ("Available commands are:");
P ("");
P ("^L -- refresh screen");
P ("a -- activate or restore soft keys");
P ("d -- disable soft keys");
P ("c -- set centered format for labels");
P ("l -- set left-justified format for labels");
P ("r -- set right-justified format for labels");
P ("[12345678] -- set label; labels are numbered 1 through 8");
P ("e -- erase stdscr (should not erase labels)");
P ("s -- test scrolling of shortened screen");
P ("x, q -- return to main menu");
P ("");
P ("Note: if activating the soft keys causes your terminal to");
P ("scroll up one line, your terminal auto-scrolls when anything");
P ("is written to the last screen position. The ncurses code");
P ("does not yet handle this gracefully.");
Refresh;
Restore_Soft_Label_Keys;
when 'a' =>
Restore_Soft_Label_Keys;
when 'e' =>
Clear;
when 's' =>
Add (Line => 20, Column => 0,
Str => "Press Q to stop the scrolling-test: ");
loop
c := Getchar;
c2 := Code_To_Char (c);
exit when c2 = 'Q';
-- c = ERR?
-- TODO when c is not a character (arrow key)
-- the behavior is different from the C version.
Add (Ch => c2);
end loop;
when 'd' =>
Clear_Soft_Label_Keys;
when 'l' =>
fmt := Left;
when 'c' =>
fmt := Centered;
when 'r' =>
fmt := Right;
when '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' =>
Add (Line => 20, Column => 0,
Str => "Please enter the label value: ");
Set_Echo_Mode (SwitchOn => True);
myGet (Str => buf);
Set_Echo_Mode (SwitchOn => False);
tmp := ctoi (c2);
Set_Soft_Label_Key (Label_Number (tmp), To_String (buf), fmt);
Refresh_Soft_Label_Keys;
Move_Cursor (Line => 20, Column => 0);
Clear_To_End_Of_Line;
when 'x' | 'q' =>
exit;
-- the C version needed a goto, ha ha
-- breaks exit the case not the loop because fall-through
-- happens in C!
when others =>
Beep;
end case;
c := Getchar;
-- TODO exit when c = EOF
end loop;
Erase;
End_Windows;
end ncurses2.slk_test;
|
