release/src/router/libncurses/Ada95/samples/ncurses2-acs_display.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                       GNAT ncurses Binding Samples                       --
   4 --                                                                          --
   5 --                                 ncurses                                  --
   6 --                                                                          --
   7 --                                 B O D Y                                  --
   8 --                                                                          --
   9 ------------------------------------------------------------------------------
  10 -- Copyright (c) 2000-2006,2008 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: Eugene V. Melaragno <aldomel@ix.netcom.com> 2000
  37 --  Version Control
  38 --  $Revision: 1.6 $
  39 --  $Date: 2008/07/26 18:47:34 $
  40 --  Binding Version 01.00
  41 ------------------------------------------------------------------------------
  42 with ncurses2.util; use ncurses2.util;
  43 with ncurses2.genericPuts;
  44 with Terminal_Interface.Curses; use Terminal_Interface.Curses;
  45
  46 with Ada.Strings.Unbounded;
  47 with Ada.Strings.Fixed;
  48
  49 procedure ncurses2.acs_display is
  50    use Int_IO;
  51
  52    procedure show_upper_chars (first : Integer);
  53    function  show_1_acs (N    : Integer;
  54                          name : String;
  55                          code :  Attributed_Character)
  56                         return Integer;
  57    procedure show_acs_chars;
  58
  59    procedure show_upper_chars (first : Integer)  is
  60       C1 : constant Boolean := (first = 128);
  61       last : constant Integer := first + 31;
  62       package p is new ncurses2.genericPuts (200);
  63       use p;
  64       use p.BS;
  65       use Ada.Strings.Unbounded;
  66
  67       tmpa : Unbounded_String;
  68       tmpb : BS.Bounded_String;
  69    begin
  70       Erase;
  71       Switch_Character_Attribute
  72         (Attr => (Bold_Character => True, others => False));
  73       Move_Cursor (Line => 0, Column => 20);
  74       tmpa := To_Unbounded_String ("Display of ");
  75       if C1 then
  76          tmpa := tmpa & "C1";
  77       else
  78          tmpa := tmpa & "GR";
  79       end if;
  80       tmpa := tmpa & " Character Codes ";
  81       myPut (tmpb, first);
  82       Append (tmpa, To_String (tmpb));
  83       Append (tmpa, " to ");
  84       myPut (tmpb, last);
  85       Append (tmpa, To_String (tmpb));
  86       Add (Str => To_String (tmpa));
  87       Switch_Character_Attribute
  88         (On => False,
  89          Attr => (Bold_Character => True, others => False));
  90       Refresh;
  91
  92       for code in first .. last loop
  93          declare
  94             row : constant Line_Position
  95                 := Line_Position (4 + ((code - first) mod 16));
  96             col : constant Column_Position
  97                 := Column_Position (((code - first) / 16) *
  98                                     Integer (Columns) / 2);
  99             tmp3 : String (1 .. 3);
 100             tmpx : String (1 .. Integer (Columns / 4));
 101             reply : Key_Code;
 102          begin
 103             Put (tmp3, code);
 104             myPut (tmpb, code, 16);
 105             tmpa := To_Unbounded_String (tmp3 & " (" & To_String (tmpb) & ')');
 106
 107             Ada.Strings.Fixed.Move (To_String (tmpa), tmpx,
 108                                     Justify => Ada.Strings.Right);
 109             Add (Line => row, Column => col,
 110                  Str => tmpx & ' ' & ':' & ' ');
 111             if C1 then
 112                Set_NoDelay_Mode (Mode => True);
 113             end if;
 114             Add_With_Immediate_Echo (Ch => Code_To_Char (Key_Code (code)));
 115             --  TODO check this
 116             if C1 then
 117                reply := Getchar;
 118                while reply /= Key_None loop
 119                   Add (Ch => Code_To_Char (reply));
 120                   Nap_Milli_Seconds (10);
 121                   reply := Getchar;
 122                end loop;
 123                Set_NoDelay_Mode (Mode => False);
 124             end if;
 125          end;
 126       end loop;
 127    end show_upper_chars;
 128
 129    function show_1_acs (N    : Integer;
 130                         name : String;
 131                         code :  Attributed_Character)
 132                        return Integer is
 133       height : constant Integer := 16;
 134       row : constant Line_Position := Line_Position (4 + (N mod height));
 135       col : constant Column_Position := Column_Position ((N / height) *
 136                                                 Integer (Columns) / 2);
 137       tmpx : String (1 .. Integer (Columns) / 3);
 138    begin
 139       Ada.Strings.Fixed.Move (name, tmpx,
 140                               Justify => Ada.Strings.Right,
 141                               Drop => Ada.Strings.Left);
 142       Add (Line => row, Column => col, Str => tmpx & ' ' & ':' & ' ');
 143       --  we need more room than C because our identifiers are longer
 144       --  22 chars actually
 145       Add (Ch => code);
 146       return N + 1;
 147    end show_1_acs;
 148
 149    procedure show_acs_chars is
 150       n : Integer;
 151    begin
 152       Erase;
 153       Switch_Character_Attribute
 154         (Attr => (Bold_Character => True, others => False));
 155       Add (Line => 0, Column => 20,
 156            Str => "Display of the ACS Character Set");
 157       Switch_Character_Attribute (On => False,
 158                                   Attr => (Bold_Character => True,
 159                                            others => False));
 160       Refresh;
 161
 162       --  the following is useful to generate the below
 163       --  grep '^[ ]*ACS_' ../src/terminal_interface-curses.ads |
 164       --  awk '{print  "n := show_1_acs(n, \""$1"\", ACS_Map("$1"));"}'
 165
 166       n := show_1_acs (0, "ACS_Upper_Left_Corner",
 167                        ACS_Map (ACS_Upper_Left_Corner));
 168       n := show_1_acs (n, "ACS_Lower_Left_Corner",
 169                        ACS_Map (ACS_Lower_Left_Corner));
 170       n := show_1_acs (n, "ACS_Upper_Right_Corner",
 171                        ACS_Map (ACS_Upper_Right_Corner));
 172       n := show_1_acs (n, "ACS_Lower_Right_Corner",
 173                        ACS_Map (ACS_Lower_Right_Corner));
 174       n := show_1_acs (n, "ACS_Left_Tee", ACS_Map (ACS_Left_Tee));
 175       n := show_1_acs (n, "ACS_Right_Tee", ACS_Map (ACS_Right_Tee));
 176       n := show_1_acs (n, "ACS_Bottom_Tee", ACS_Map (ACS_Bottom_Tee));
 177       n := show_1_acs (n, "ACS_Top_Tee", ACS_Map (ACS_Top_Tee));
 178       n := show_1_acs (n, "ACS_Horizontal_Line",
 179                        ACS_Map (ACS_Horizontal_Line));
 180       n := show_1_acs (n, "ACS_Vertical_Line", ACS_Map (ACS_Vertical_Line));
 181       n := show_1_acs (n, "ACS_Plus_Symbol", ACS_Map (ACS_Plus_Symbol));
 182       n := show_1_acs (n, "ACS_Scan_Line_1", ACS_Map (ACS_Scan_Line_1));
 183       n := show_1_acs (n, "ACS_Scan_Line_9", ACS_Map (ACS_Scan_Line_9));
 184       n := show_1_acs (n, "ACS_Diamond", ACS_Map (ACS_Diamond));
 185       n := show_1_acs (n, "ACS_Checker_Board", ACS_Map (ACS_Checker_Board));
 186       n := show_1_acs (n, "ACS_Degree", ACS_Map (ACS_Degree));
 187       n := show_1_acs (n, "ACS_Plus_Minus", ACS_Map (ACS_Plus_Minus));
 188       n := show_1_acs (n, "ACS_Bullet", ACS_Map (ACS_Bullet));
 189       n := show_1_acs (n, "ACS_Left_Arrow", ACS_Map (ACS_Left_Arrow));
 190       n := show_1_acs (n, "ACS_Right_Arrow", ACS_Map (ACS_Right_Arrow));
 191       n := show_1_acs (n, "ACS_Down_Arrow", ACS_Map (ACS_Down_Arrow));
 192       n := show_1_acs (n, "ACS_Up_Arrow", ACS_Map (ACS_Up_Arrow));
 193       n := show_1_acs (n, "ACS_Board_Of_Squares",
 194                        ACS_Map (ACS_Board_Of_Squares));
 195       n := show_1_acs (n, "ACS_Lantern", ACS_Map (ACS_Lantern));
 196       n := show_1_acs (n, "ACS_Solid_Block", ACS_Map (ACS_Solid_Block));
 197       n := show_1_acs (n, "ACS_Scan_Line_3", ACS_Map (ACS_Scan_Line_3));
 198       n := show_1_acs (n, "ACS_Scan_Line_7", ACS_Map (ACS_Scan_Line_7));
 199       n := show_1_acs (n, "ACS_Less_Or_Equal", ACS_Map (ACS_Less_Or_Equal));
 200       n := show_1_acs (n, "ACS_Greater_Or_Equal",
 201                        ACS_Map (ACS_Greater_Or_Equal));
 202       n := show_1_acs (n, "ACS_PI", ACS_Map (ACS_PI));
 203       n := show_1_acs (n, "ACS_Not_Equal", ACS_Map (ACS_Not_Equal));
 204       n := show_1_acs (n, "ACS_Sterling", ACS_Map (ACS_Sterling));
 205
 206       if n = 0 then
 207          raise Constraint_Error;
 208       end if;
 209    end show_acs_chars;
 210
 211    c1 : Key_Code;
 212    c : Character := 'a';
 213 begin
 214    loop
 215       case c is
 216          when 'a' =>
 217             show_acs_chars;
 218          when '0' | '1' | '2' | '3' =>
 219             show_upper_chars (ctoi (c) * 32 + 128);
 220          when others =>
 221             null;
 222       end case;
 223       Add (Line => Lines - 3, Column => 0,
 224            Str => "Note: ANSI terminals may not display C1 characters.");
 225       Add (Line => Lines - 2, Column => 0,
 226            Str => "Select: a=ACS, 0=C1, 1,2,3=GR characters, q=quit");
 227       Refresh;
 228       c1 := Getchar;
 229       c := Code_To_Char (c1);
 230       exit when c = 'q' or c = 'x';
 231    end loop;
 232    Pause;
 233    Erase;
 234    End_Windows;
 235 end ncurses2.acs_display;