1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
5 -- Sample.Menu_Demo.Aux --
9 ------------------------------------------------------------------------------
10 -- Copyright 2020 Thomas E. Dickey --
11 -- Copyright 1998-2006,2009 Free Software Foundation, Inc. --
13 -- Permission is hereby granted, free of charge, to any person obtaining a --
14 -- copy of this software and associated documentation files (the --
15 -- "Software"), to deal in the Software without restriction, including --
16 -- without limitation the rights to use, copy, modify, merge, publish, --
17 -- distribute, distribute with modifications, sublicense, and/or sell --
18 -- copies of the Software, and to permit persons to whom the Software is --
19 -- furnished to do so, subject to the following conditions: --
21 -- The above copyright notice and this permission notice shall be included --
22 -- in all copies or substantial portions of the Software. --
24 -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
25 -- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
26 -- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
27 -- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
28 -- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
29 -- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
30 -- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
32 -- Except as contained in this notice, the name(s) of the above copyright --
33 -- holders shall not be used in advertising or otherwise to promote the --
34 -- sale, use or other dealings in this Software without prior written --
36 ------------------------------------------------------------------------------
37 -- Author: Juergen Pfeifer, 1996
40 -- $Date: 2020/02/02 23:34:34 $
41 -- Binding Version 01.00
42 ------------------------------------------------------------------------------
43 with Ada.Characters.Latin_1; use Ada.Characters.Latin_1;
45 with Sample.Manifest; use Sample.Manifest;
46 with Sample.Helpers; use Sample.Helpers;
47 with Sample.Keyboard_Handler; use Sample.Keyboard_Handler;
48 with Sample.Explanation; use Sample.Explanation;
50 package body Sample.Menu_Demo.Aux is
52 procedure Geometry (M : Menu;
55 Y : out Line_Position;
56 X : out Column_Position;
57 Fy : out Line_Position;
58 Fx : out Column_Position);
60 procedure Geometry (M : Menu;
61 L : out Line_Count; -- Lines used for menu
62 C : out Column_Count; -- Columns used for menu
63 Y : out Line_Position; -- Proposed Line for menu
64 X : out Column_Position; -- Proposed Column for menu
65 Fy : out Line_Position; -- Vertical inner frame
66 Fx : out Column_Position) -- Horiz. inner frame
68 Spc_Desc : Column_Position; -- spaces between description and item
70 Set_Mark (M, Menu_Marker);
72 Spacing (M, Spc_Desc, Fy, Fx);
75 Fx := Fx + Column_Position (Fy - 1); -- looks a bit nicer
77 L := L + 2 * Fy; -- count for frame at top and bottom
80 -- Calculate horizontal coordinate at the screen center
81 X := (Columns - C) / 2;
82 Y := 1; -- always startin line 1
86 procedure Geometry (M : Menu;
87 L : out Line_Count; -- Lines used for menu
88 C : out Column_Count; -- Columns used for menu
89 Y : out Line_Position; -- Proposed Line for menu
90 X : out Column_Position) -- Proposed Column for menu
95 Geometry (M, L, C, Y, X, Fy, Fx);
98 function Create (M : Menu;
101 Col : Column_Position) return Panel
106 Y, Fy : Line_Position;
107 X, Fx : Column_Position;
110 Geometry (M, L, C, Y, X, Fy, Fx);
111 W := New_Window (L, C, Lin, Col);
115 Set_Background (Win => W,
117 Color => Menu_Back_Color,
118 Attr => Normal_Video));
119 Set_Foreground (Men => M, Color => Menu_Fore_Color);
120 Set_Background (Men => M, Color => Menu_Back_Color);
121 Set_Grey (Men => M, Color => Menu_Grey_Color);
124 S := Derived_Window (W, L - Fy, C - Fx, Fy, Fx);
129 Set_Sub_Window (M, S);
130 if Title'Length > 0 then
131 Window_Title (W, Title);
133 Pan := New_Panel (W);
138 procedure Destroy (M : Menu;
144 S := Get_Sub_Window (M);
148 Set_Window (M, Null_Window);
149 Set_Sub_Window (M, Null_Window);
155 function Get_Request (M : Menu; P : Panel) return Key_Code
157 W : constant Window := Get_Window (M);
164 if K in Special_Key_Code'Range then
166 when HELP_CODE => Explain_Context;
167 when EXPLAIN_CODE => Explain ("MENUKEYS");
168 when Key_Home => return REQ_FIRST_ITEM;
169 when QUIT_CODE => return QUIT;
170 when Key_Cursor_Down => return REQ_DOWN_ITEM;
171 when Key_Cursor_Up => return REQ_UP_ITEM;
172 when Key_Cursor_Left => return REQ_LEFT_ITEM;
173 when Key_Cursor_Right => return REQ_RIGHT_ITEM;
174 when Key_End => return REQ_LAST_ITEM;
175 when Key_Backspace => return REQ_BACK_PATTERN;
176 when Key_Next_Page => return REQ_SCR_DPAGE;
177 when Key_Previous_Page => return REQ_SCR_UPAGE;
178 when others => return K;
180 elsif K in Normal_Key_Code'Range then
181 Ch := Character'Val (K);
183 when CAN => return QUIT; -- CTRL-X
184 when SO => return REQ_NEXT_ITEM; -- CTRL-N
185 when DLE => return REQ_PREV_ITEM; -- CTRL-P
186 when NAK => return REQ_SCR_ULINE; -- CTRL-U
187 when EOT => return REQ_SCR_DLINE; -- CTRL-D
188 when ACK => return REQ_SCR_DPAGE; -- CTRL-F
189 when STX => return REQ_SCR_UPAGE; -- CTRL-B
190 when EM => return REQ_CLEAR_PATTERN; -- CTRL-Y
191 when BS => return REQ_BACK_PATTERN; -- CTRL-H
192 when SOH => return REQ_NEXT_MATCH; -- CTRL-A
193 when ENQ => return REQ_PREV_MATCH; -- CTRL-E
194 when DC4 => return REQ_TOGGLE_ITEM; -- CTRL-T
196 when CR | LF => return SELECT_ITEM;
197 when others => return K;
205 end Sample.Menu_Demo.Aux;