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-------------------------------------------------------------------------------
-- --
-- Ada Interface to the X Window System and Motif(tm)/Lesstif --
-- Copyright (c) 1996-2002 Hans-Frieder Vogt --
-- --
-- This program is free software; you can redistribute it and/or modify --
-- it under the terms of the GNU General Public License as published by --
-- the Free Software Foundation; either version 2 of the License, or --
-- (at your option) any later version. --
-- --
-- This program is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- See the GNU General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public License --
-- along with this program; if not, write to the --
-- Free Software Foundation, Inc., --
-- 59 Temple Place - Suite 330, --
-- Boston, MA 02111-1307, USA. --
-- --
-- --
-- X Window System is copyrighted by the X Consortium --
-- Motif(tm) is copyrighted by the Open Software Foundation, Inc. --
-- --
-- --
-------------------------------------------------------------------------------
-------------------------------------------------------------------------------
--
-- HISTORY:
-- adapted 25.1.98 to adabindx 0.5
-- 20 Jan 2002 H.-F. Vogt: Speed up of reading in text
-- improved user interface (new function
-- Line_For, modified Actualize_Status,
-- About_CB)
--
-------------------------------------------------------------------------------
with Ada.Characters.Latin_1,
Xm_Widgets.Primitive.Text,
Xm_Widgets.Primitive.Label,
Xm_Widgets.Manager.Bulletin_Board.Message_Box;
use Ada.Characters.Latin_1,
Xm_Widgets.Primitive.Text,
Xm_Widgets.Primitive.Label,
Xm_Widgets.Manager.Bulletin_Board.Message_Box;
package body XmMore_Global is
Insert_Pos : Long_Integer := 0;
Try_1 : Natural := 1;
function Line_For (Pos : in Long_Integer) return Natural is
Lower, Upper : Natural;
begin
-- find the row/column info
-- use a binary search
--
Lower := 1;
Upper := Lines;
while not (Pos >= Line_Array (Try_1) and then Pos < Line_Array (Try_1 + 1)) loop
if Pos >= Line_Array (Try_1 + 1) then
Lower := Try_1 + 1;
else
Upper := Try_1;
end if;
Try_1 := (Lower + Upper) / 2;
end loop;
return Try_1;
end Line_For;
procedure Actualize_Status (Cur_Pos : in Long_Integer) is
Status_String : Xm_String;
begin
Argl := Null_Arg_List;
Append_Set (Argl, Xm_Widgets.Primitive.Label.Xm_N_Label_Type, Is_String);
if Array_Completed then
if Cur_Pos >= Characters then
Status_String := Xm_String_Create_L_To_R (File_Name (1 .. File_Name_L) &
" (" & Long_Integer'Image (Characters) & " bytes)" &
" v " & Natural'Image (Lines+1) &
", > 0",
Xm_String_ISO8859_1);
else
Try_1 := Line_For (Cur_Pos + 1);
Status_String := Xm_String_Create_L_To_R (File_Name (1 .. File_Name_L) &
" (" & Long_Integer'Image (Characters) & " bytes)" &
" v " & Natural'Image (Try_1) &
", > " &
Natural'Image (Natural (Cur_Pos + 1 - Line_Array (Try_1))),
Xm_String_ISO8859_1);
end if;
else
Status_String := Xm_String_Create_L_To_R (File_Name (1 .. File_Name_L) &
" (" & Long_Integer'Image (Characters) & " bytes)" &
" v 1, > 0",
Xm_String_ISO8859_1);
end if;
Append_Set (Argl, Xm_Widgets.Primitive.Label.Xm_N_Label_String,
Status_String);
Xt_Set_Values (The_Status, Argl);
Xm_String_Free (Status_String);
Insert_Pos := Cur_Pos;
end Actualize_Status;
procedure About_CB (W : in Widget;
Closure : Xt_Pointer;
Call_Data : Xt_Pointer) is
Button : Widget;
About_Text : constant String := "XmMore -- a *tif version of more" &
LF &
"(c)1996-2002 Hans-Frieder Vogt" &
LF &
"(example program for Ada interface to Motif(tm))";
About_String : Xm_String;
begin
if About_Dialog = Null_Widget then
About_Dialog := Xm_Create_Information_Dialog (Appshell, "about_dialog");
About_String := Xm_String_Create_L_To_R (About_Text,
Xm_String_ISO8859_1);
Argl := Null_Arg_List;
Append_Set (Argl, Xm_N_Message_String, About_String);
Xt_Set_Values (About_Dialog, Argl);
Xm_String_Free (About_String);
Button := Xt_Name_To_Widget (About_Dialog, Cancel_Button_Name);
Xt_Unmanage_Child (Button);
Button := Xt_Name_To_Widget (About_Dialog, Help_Button_Name);
Xt_Unmanage_Child (Button);
Xt_Manage_Child (About_Dialog);
else
if not Xt_Is_Managed (About_Dialog) then
Xt_Manage_Child (About_Dialog);
end if;
end if;
end About_CB;
procedure Quit_CB (W : in Widget;
Closure : Xt_Pointer;
Call_Data : Xt_Pointer) is
begin
raise Leave_XmMore;
end Quit_CB;
procedure Text_CB (W : in Widget;
Closure : Xt_Pointer;
Call_Data : Xt_Pointer) is
Callback_Str : Xm_Text_Verify_Callback_Struct_Access;
begin
Callback_Str := To_Callback_Struct (Call_Data);
Actualize_Status (Long_Integer (Callback_Str.New_Insert));
end Text_CB;
end XmMore_Global;
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