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205 | ------------------------------------------------------------------------------
-- --
-- GNAT ncurses Binding Samples --
-- --
-- Sample.Menu_Demo.Aux --
-- --
-- B O D Y --
-- --
------------------------------------------------------------------------------
-- Copyright 2020 Thomas E. Dickey --
-- Copyright 1998-2006,2009 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: Juergen Pfeifer, 1996
-- Version Control
-- $Revision: 1.15 $
-- $Date: 2020/02/02 23:34:34 $
-- Binding Version 01.00
------------------------------------------------------------------------------
with Ada.Characters.Latin_1; use Ada.Characters.Latin_1;
with Sample.Manifest; use Sample.Manifest;
with Sample.Helpers; use Sample.Helpers;
with Sample.Keyboard_Handler; use Sample.Keyboard_Handler;
with Sample.Explanation; use Sample.Explanation;
package body Sample.Menu_Demo.Aux is
procedure Geometry (M : Menu;
L : out Line_Count;
C : out Column_Count;
Y : out Line_Position;
X : out Column_Position;
Fy : out Line_Position;
Fx : out Column_Position);
procedure Geometry (M : Menu;
L : out Line_Count; -- Lines used for menu
C : out Column_Count; -- Columns used for menu
Y : out Line_Position; -- Proposed Line for menu
X : out Column_Position; -- Proposed Column for menu
Fy : out Line_Position; -- Vertical inner frame
Fx : out Column_Position) -- Horiz. inner frame
is
Spc_Desc : Column_Position; -- spaces between description and item
begin
Set_Mark (M, Menu_Marker);
Spacing (M, Spc_Desc, Fy, Fx);
Scale (M, L, C);
Fx := Fx + Column_Position (Fy - 1); -- looks a bit nicer
L := L + 2 * Fy; -- count for frame at top and bottom
C := C + 2 * Fx; -- "
-- Calculate horizontal coordinate at the screen center
X := (Columns - C) / 2;
Y := 1; -- always startin line 1
end Geometry;
procedure Geometry (M : Menu;
L : out Line_Count; -- Lines used for menu
C : out Column_Count; -- Columns used for menu
Y : out Line_Position; -- Proposed Line for menu
X : out Column_Position) -- Proposed Column for menu
is
Fy : Line_Position;
Fx : Column_Position;
begin
Geometry (M, L, C, Y, X, Fy, Fx);
end Geometry;
function Create (M : Menu;
Title : String;
Lin : Line_Position;
Col : Column_Position) return Panel
is
W, S : Window;
L : Line_Count;
C : Column_Count;
Y, Fy : Line_Position;
X, Fx : Column_Position;
Pan : Panel;
begin
Geometry (M, L, C, Y, X, Fy, Fx);
W := New_Window (L, C, Lin, Col);
Set_Meta_Mode (W);
Set_KeyPad_Mode (W);
if Has_Colors then
Set_Background (Win => W,
Ch => (Ch => ' ',
Color => Menu_Back_Color,
Attr => Normal_Video));
Set_Foreground (Men => M, Color => Menu_Fore_Color);
Set_Background (Men => M, Color => Menu_Back_Color);
Set_Grey (Men => M, Color => Menu_Grey_Color);
Erase (W);
end if;
S := Derived_Window (W, L - Fy, C - Fx, Fy, Fx);
Set_Meta_Mode (S);
Set_KeyPad_Mode (S);
Box (W);
Set_Window (M, W);
Set_Sub_Window (M, S);
if Title'Length > 0 then
Window_Title (W, Title);
end if;
Pan := New_Panel (W);
Post (M);
return Pan;
end Create;
procedure Destroy (M : Menu;
P : in out Panel)
is
W, S : Window;
begin
W := Get_Window (M);
S := Get_Sub_Window (M);
Post (M, False);
Erase (W);
Delete (P);
Set_Window (M, Null_Window);
Set_Sub_Window (M, Null_Window);
Delete (S);
Delete (W);
Update_Panels;
end Destroy;
function Get_Request (M : Menu; P : Panel) return Key_Code
is
W : constant Window := Get_Window (M);
K : Real_Key_Code;
Ch : Character;
begin
Top (P);
loop
K := Get_Key (W);
if K in Special_Key_Code'Range then
case K is
when HELP_CODE => Explain_Context;
when EXPLAIN_CODE => Explain ("MENUKEYS");
when Key_Home => return REQ_FIRST_ITEM;
when QUIT_CODE => return QUIT;
when Key_Cursor_Down => return REQ_DOWN_ITEM;
when Key_Cursor_Up => return REQ_UP_ITEM;
when Key_Cursor_Left => return REQ_LEFT_ITEM;
when Key_Cursor_Right => return REQ_RIGHT_ITEM;
when Key_End => return REQ_LAST_ITEM;
when Key_Backspace => return REQ_BACK_PATTERN;
when Key_Next_Page => return REQ_SCR_DPAGE;
when Key_Previous_Page => return REQ_SCR_UPAGE;
when others => return K;
end case;
elsif K in Normal_Key_Code'Range then
Ch := Character'Val (K);
case Ch is
when CAN => return QUIT; -- CTRL-X
when SO => return REQ_NEXT_ITEM; -- CTRL-N
when DLE => return REQ_PREV_ITEM; -- CTRL-P
when NAK => return REQ_SCR_ULINE; -- CTRL-U
when EOT => return REQ_SCR_DLINE; -- CTRL-D
when ACK => return REQ_SCR_DPAGE; -- CTRL-F
when STX => return REQ_SCR_UPAGE; -- CTRL-B
when EM => return REQ_CLEAR_PATTERN; -- CTRL-Y
when BS => return REQ_BACK_PATTERN; -- CTRL-H
when SOH => return REQ_NEXT_MATCH; -- CTRL-A
when ENQ => return REQ_PREV_MATCH; -- CTRL-E
when DC4 => return REQ_TOGGLE_ITEM; -- CTRL-T
when CR | LF => return SELECT_ITEM;
when others => return K;
end case;
else
return K;
end if;
end loop;
end Get_Request;
end Sample.Menu_Demo.Aux;
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