1 ------------------------------------------------------------------------------
3 -- GNAT ncurses Binding Samples --
5 -- Sample.Menu_Demo.Aux --
9 ------------------------------------------------------------------------------
10 -- Copyright (c) 1998 Free Software Foundation, Inc. --
12 -- Permission is hereby granted, free of charge, to any person obtaining a --
13 -- copy of this software and associated documentation files (the --
14 -- "Software"), to deal in the Software without restriction, including --
15 -- without limitation the rights to use, copy, modify, merge, publish, --
16 -- distribute, distribute with modifications, sublicense, and/or sell --
17 -- copies of the Software, and to permit persons to whom the Software is --
18 -- furnished to do so, subject to the following conditions: --
20 -- The above copyright notice and this permission notice shall be included --
21 -- in all copies or substantial portions of the Software. --
23 -- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS --
24 -- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF --
25 -- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. --
26 -- IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, --
27 -- DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR --
28 -- OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR --
29 -- THE USE OR OTHER DEALINGS IN THE SOFTWARE. --
31 -- Except as contained in this notice, the name(s) of the above copyright --
32 -- holders shall not be used in advertising or otherwise to promote the --
33 -- sale, use or other dealings in this Software without prior written --
35 ------------------------------------------------------------------------------
36 -- Author: Juergen Pfeifer, 1996
39 -- Binding Version 01.00
40 ------------------------------------------------------------------------------
41 with Ada.Characters.Latin_1; use Ada.Characters.Latin_1;
43 with Sample.Manifest; use Sample.Manifest;
44 with Sample.Helpers; use Sample.Helpers;
45 with Sample.Keyboard_Handler; use Sample.Keyboard_Handler;
46 with Sample.Explanation; use Sample.Explanation;
48 package body Sample.Menu_Demo.Aux is
50 procedure Geometry (M : in Menu;
53 Y : out Line_Position;
54 X : out Column_Position;
55 Fy : out Line_Position;
56 Fx : out Column_Position);
58 procedure Geometry (M : in Menu;
59 L : out Line_Count; -- Lines used for menu
60 C : out Column_Count; -- Columns used for menu
61 Y : out Line_Position; -- Proposed Line for menu
62 X : out Column_Position; -- Proposed Column for menu
63 Fy : out Line_Position; -- Vertical inner frame
64 Fx : out Column_Position) -- Horiz. inner frame
66 Spc_Desc : Column_Position; -- spaces between description and item
68 Set_Mark (M, Menu_Marker);
70 Spacing (M, Spc_Desc, Fy, Fx);
73 Fx := Fx + Column_Position (Fy - 1); -- looks a bit nicer
75 L := L + 2 * Fy; -- count for frame at top and bottom
78 -- Calculate horizontal coordinate at the screen center
79 X := (Columns - C) / 2;
80 Y := 1; -- always startin line 1
84 procedure Geometry (M : in Menu;
85 L : out Line_Count; -- Lines used for menu
86 C : out Column_Count; -- Columns used for menu
87 Y : out Line_Position; -- Proposed Line for menu
88 X : out Column_Position) -- Proposed Column for menu
93 Geometry (M, L, C, Y, X, Fy, Fx);
96 function Create (M : Menu;
99 Col : Column_Position) return Panel
104 Y, Fy : Line_Position;
105 X, Fx : Column_Position;
108 Geometry (M, L, C, Y, X, Fy, Fx);
109 W := New_Window (L, C, Lin, Col);
113 Set_Background (Win => W,
115 Color => Menu_Back_Color,
116 Attr => Normal_Video));
117 Set_Foreground (Men => M, Color => Menu_Fore_Color);
118 Set_Background (Men => M, Color => Menu_Back_Color);
119 Set_Grey (Men => M, Color => Menu_Grey_Color);
122 S := Derived_Window (W, L - Fy, C - Fx, Fy, Fx);
127 Set_Sub_Window (M, S);
128 if Title'Length > 0 then
129 Window_Title (W, Title);
131 Pan := New_Panel (W);
136 procedure Destroy (M : in Menu;
142 S := Get_Sub_Window (M);
146 Set_Window (M, Null_Window);
147 Set_Sub_Window (M, Null_Window);
153 function Get_Request (M : Menu; P : Panel) return Key_Code
155 W : constant Window := Get_Window (M);
162 if K in Special_Key_Code'Range then
164 when HELP_CODE => Explain_Context;
165 when EXPLAIN_CODE => Explain ("MENUKEYS");
166 when Key_Home => return REQ_FIRST_ITEM;
167 when QUIT_CODE => return QUIT;
168 when Key_Cursor_Down => return REQ_DOWN_ITEM;
169 when Key_Cursor_Up => return REQ_UP_ITEM;
170 when Key_Cursor_Left => return REQ_LEFT_ITEM;
171 when Key_Cursor_Right => return REQ_RIGHT_ITEM;
172 when Key_End => return REQ_LAST_ITEM;
173 when Key_Backspace => return REQ_BACK_PATTERN;
174 when Key_Next_Page => return REQ_SCR_DPAGE;
175 when Key_Previous_Page => return REQ_SCR_UPAGE;
176 when others => return K;
178 elsif K in Normal_Key_Code'Range then
179 Ch := Character'Val (K);
181 when CAN => return QUIT; -- CTRL-X
182 when SO => return REQ_NEXT_ITEM; -- CTRL-N
183 when DLE => return REQ_PREV_ITEM; -- CTRL-P
184 when NAK => return REQ_SCR_ULINE; -- CTRL-U
185 when EOT => return REQ_SCR_DLINE; -- CTRL-D
186 when ACK => return REQ_SCR_DPAGE; -- CTRL-F
187 when STX => return REQ_SCR_UPAGE; -- CTRL-B
188 when EM => return REQ_CLEAR_PATTERN; -- CTRL-Y
189 when BS => return REQ_BACK_PATTERN; -- CTRL-H
190 when SOH => return REQ_NEXT_MATCH; -- CTRL-A
191 when ENQ => return REQ_PREV_MATCH; -- CTRL-E
192 when DC4 => return REQ_TOGGLE_ITEM; -- CTRL-T
194 when CR | LF => return SELECT_ITEM;
195 when others => return K;
203 end Sample.Menu_Demo.Aux;