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top - downloadIndex: ┃ B T ┃
Length: 6550 (0x1996)
Types: TextFile
Names: »B«
└─⟦85b835f43⟧ Bits:30000549 8mm tape, Rational 1000, Xlib rev 6.00
└─ ⟦0c20f784e⟧ »DATA«
└─⟦1abbe589f⟧
└─⟦059497ac5⟧
└─⟦this⟧
with Xlbt_Arithmetic;
use Xlbt_Arithmetic;
with Xlbt_Atom_Defs;
use Xlbt_Atom_Defs;
with Xlbt_Basic;
use Xlbt_Basic;
with Xlbt_Cut_Buffer;
use Xlbt_Cut_Buffer;
with Xlbt_Window;
use Xlbt_Window;
with Xlbp_Display;
use Xlbp_Display;
with Xlbp_Window_Property;
use Xlbp_Window_Property;
package body Xlbp_Cut_Buffer is
------------------------------------------------------------------------------
-- X Library Cut and Paste Buffers
--
-- Xlbp_Cut_Buffer - Used to handle cut-and-paste buffers.
------------------------------------------------------------------------------
-- Copyright 1989 - 1991 by Rational, Santa Clara, California.
-- Copyright 1985 - 1989 by the Massachusetts Institute of Technology
--
-- All Rights Reserved.
--
-- Permission to use, copy, modify, and distribute this software and its
-- documentation for any purpose and without fee is hereby granted,
-- provided that the above copyright notice(s) appear in all copies and that
-- both that copyright notice(s) and this permission notice appear in
-- supporting documentation, and that the names of MIT or Rational not be
-- used in advertising or publicity pertaining to distribution of the software
-- without specific, written prior permission.
--
-- MIT and Rational disclaim all warranties with regard to this software,
-- including all implied warranties of merchantability and fitness, in no
-- event shall MIT or Rational be liable for any special, indirect or
-- consequential damages or any damages whatsoever resulting from loss of use,
-- data or profits, whether in an action of contract, negligence or other
-- tortious action, arising out of or in connection with the use or performance
-- of this software.
------------------------------------------------------------------------------
--\f
----Insulate predefined atom numbers from cut routines
N_To_Atom : constant X_Atom_Array (0 .. 7) := (Xa_Cut_Buffer0,
Xa_Cut_Buffer1,
Xa_Cut_Buffer2,
Xa_Cut_Buffer3,
Xa_Cut_Buffer4,
Xa_Cut_Buffer5,
Xa_Cut_Buffer6,
Xa_Cut_Buffer7);
--\f
function X_Fetch_Buffer (Display : X_Display;
Buffer : X_Cut_Buffer_Number) return U_Char_List is
------------------------------------------------------------------------------
-- X_Fetch_Buffer
------------------------------------------------------------------------------
Actual_Type : X_Atom;
Actual_Format : U_Char;
N_Items : S_Natural;
Leftover : S_Natural;
Data : U_Char_List;
Succ : X_Status;
begin
----Get the first chunk of the buffer. We may not get it all this time.
X_Get_Window_Property (Display => Display,
Window => X_Root_Window (Display, 0),
Property => N_To_Atom (S_Natural (Buffer)),
Offset => 0,
Maximum_Length => S_Natural'Last / 4 * 4,
Delete => False,
Representation => Xa_String,
Actual_Type => Actual_Type,
Actual_Format => Actual_Format,
N_Items => N_Items,
Bytes_After => Leftover,
Data => Data,
Status => Succ);
----See if we were successful.
if Succ = Failed then
return None_U_Char_List;
end if;
----Check to see if we are happy with the format.
if Actual_Type /= Xa_String or else
Actual_Format = 32 then
-- I just duplicate the C code; I don't
-- pretend to know why =32 and not /=8.
Free_U_Char_List (Data);
return None_U_Char_List;
end if;
----Return the data.
return Data;
end X_Fetch_Buffer;
--\f
function X_Fetch_Bytes (Display : X_Display) return U_Char_List is
------------------------------------------------------------------------------
-- X_Fetch_Bytes
------------------------------------------------------------------------------
begin
return X_Fetch_Buffer (Display, 0);
end X_Fetch_Bytes;
--\f
procedure X_Rotate_Buffers (Display : X_Display;
Rotate : S_Short) is
------------------------------------------------------------------------------
-- X_Rotate_Buffers
------------------------------------------------------------------------------
begin
X_Rotate_Window_Properties (Display => Display,
Window => X_Root_Window (Display, 0),
Properties => N_To_Atom,
N_Positions => Rotate);
end X_Rotate_Buffers;
--\f
procedure X_Store_Buffer (Display : X_Display;
Bytes : U_Char_Array;
Buffer : X_Cut_Buffer_Number) is
------------------------------------------------------------------------------
-- X_Store_Buffer
------------------------------------------------------------------------------
begin
X_Change_Property (Display => Display,
Window => X_Root_Window (Display, 0),
Property => N_To_Atom (S_Natural (Buffer)),
Representation => Xa_String,
Format => 8,
Mode => Prop_Mode_Replace,
Data => Bytes);
end X_Store_Buffer;
--\f
procedure X_Store_Bytes (Display : X_Display;
Bytes : U_Char_Array) is
------------------------------------------------------------------------------
-- X_Store_Bytes
------------------------------------------------------------------------------
begin
X_Store_Buffer (Display, Bytes, 0);
end X_Store_Bytes;
--\f
end Xlbp_Cut_Buffer;