source: trunk/essentials/sys-libs/ncurses/Ada95/samples/sample-curses_demo.adb@ 3166

Last change on this file since 3166 was 2621, checked in by bird, 20 years ago

GNU ncurses 5.5
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1------------------------------------------------------------------------------
2-- --
3-- GNAT ncurses Binding Samples --
4-- --
5-- Sample.Curses_Demo --
6-- --
7-- B O D Y --
8-- --
9------------------------------------------------------------------------------
10-- Copyright (c) 1998,2004 Free Software Foundation, Inc. --
11-- --
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: --
19-- --
20-- The above copyright notice and this permission notice shall be included --
21-- in all copies or substantial portions of the Software. --
22-- --
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. --
30-- --
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 --
34-- authorization. --
35------------------------------------------------------------------------------
36-- Author: Juergen Pfeifer, 1996
37-- Version Control
38-- $Revision: 1.15 $
39-- $Date: 2004/08/21 21:37:00 $
40-- Binding Version 01.00
41------------------------------------------------------------------------------
42with Terminal_Interface.Curses; use Terminal_Interface.Curses;
43with Terminal_Interface.Curses.Menus; use Terminal_Interface.Curses.Menus;
44with Terminal_Interface.Curses.Mouse; use Terminal_Interface.Curses.Mouse;
45with Terminal_Interface.Curses.Panels; use Terminal_Interface.Curses.Panels;
46with Terminal_Interface.Curses.Panels.User_Data;
47
48with Sample.Manifest; use Sample.Manifest;
49with Sample.Helpers; use Sample.Helpers;
50with Sample.Function_Key_Setting; use Sample.Function_Key_Setting;
51
52with Sample.Explanation; use Sample.Explanation;
53
54with Sample.Menu_Demo.Handler;
55with Sample.Curses_Demo.Mouse;
56with Sample.Curses_Demo.Attributes;
57
58package body Sample.Curses_Demo is
59
60 type User_Data is new Integer;
61 type User_Data_Access is access all User_Data;
62 package PUD is new Panels.User_Data (User_Data, User_Data_Access);
63 -- We use above instantiation of the generic User_Data package to
64 -- demonstrate and test the use of the user data maechanism.
65
66 procedure Demo
67 is
68 function My_Driver (M : Menu;
69 K : Key_Code;
70 Pan : Panel) return Boolean;
71 package Mh is new Sample.Menu_Demo.Handler (My_Driver);
72
73 Itm : Item_Array_Access := new Item_Array'
74 (New_Item ("Attributes Demo"),
75 New_Item ("Mouse Demo"),
76 Null_Item);
77 M : Menu := New_Menu (Itm);
78 U1 : constant User_Data_Access := new User_Data'(4711);
79 U2 : User_Data_Access;
80
81 function My_Driver (M : Menu;
82 K : Key_Code;
83 Pan : Panel) return Boolean
84 is
85 Idx : constant Positive := Get_Index (Current (M));
86 Result : Boolean := False;
87 begin
88 PUD.Set_User_Data (Pan, U1); -- set some user data, just for fun
89 if K in User_Key_Code'Range then
90 if K = QUIT then
91 Result := True;
92 elsif K = SELECT_ITEM then
93 if Idx in Itm'Range then
94 Hide (Pan);
95 Update_Panels;
96 end if;
97 case Idx is
98 when 1 => Sample.Curses_Demo.Attributes.Demo;
99 when 2 => Sample.Curses_Demo.Mouse.Demo;
100 when others => Not_Implemented;
101 end case;
102 if Idx in Itm'Range then
103 Top (Pan);
104 Show (Pan);
105 Update_Panels;
106 Update_Screen;
107 end if;
108 end if;
109 end if;
110 PUD.Get_User_Data (Pan, U2); -- get the user data
111 pragma Assert (U1.all = U2.all and then U1 = U2);
112 return Result;
113 end My_Driver;
114
115 begin
116
117 if (1 + Item_Count (M)) /= Itm'Length then
118 raise Constraint_Error;
119 end if;
120
121 if not Has_Mouse then
122 declare
123 O : Item_Option_Set;
124 begin
125 Get_Options (Itm (2), O);
126 O.Selectable := False;
127 Set_Options (Itm (2), O);
128 end;
129 end if;
130
131 Push_Environment ("CURSES00");
132 Notepad ("CURSES-PAD00");
133 Default_Labels;
134 Refresh_Soft_Label_Keys_Without_Update;
135
136 Mh.Drive_Me (M, " Demo ");
137 Pop_Environment;
138
139 Delete (M);
140 Free (Itm, True);
141 end Demo;
142
143end Sample.Curses_Demo;
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