mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-23 03:09:01 +08:00
130 lines
4.8 KiB
C
130 lines
4.8 KiB
C
/* terminal.h -- The external interface to terminal I/O. */
|
|
|
|
/* This file is part of GNU Info, a program for reading online documentation
|
|
stored in Info format.
|
|
|
|
Copyright (C) 1993, 96 Free Software Foundation, Inc.
|
|
|
|
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, 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.
|
|
|
|
Written by Brian Fox (bfox@ai.mit.edu). */
|
|
|
|
#if !defined (_TERMINAL_H_)
|
|
#define _TERMINAL_H_
|
|
|
|
/* We use the following data type to talk about pointers to functions. */
|
|
#if !defined (__FUNCTION_DEF)
|
|
# define __FUNCTION_DEF
|
|
typedef int Function ();
|
|
typedef void VFunction ();
|
|
#endif /* _FUNCTION_DEF */
|
|
|
|
/* For almost every function externally visible from terminal.c, there is
|
|
a corresponding "hook" function which can be bound in order to replace
|
|
the functionality of the one found in terminal.c. This is how we go
|
|
about implemented X window display. */
|
|
|
|
/* The width and height of the terminal. */
|
|
extern int screenwidth, screenheight;
|
|
|
|
/* Non-zero means this terminal can't really do anything. */
|
|
extern int terminal_is_dumb_p;
|
|
|
|
/* Non-zero means that this terminal has a meta key. */
|
|
extern int terminal_has_meta_p;
|
|
|
|
/* Non-zero means that this terminal can produce a visible bell. */
|
|
extern int terminal_has_visible_bell_p;
|
|
|
|
/* Non-zero means to use that visible bell if at all possible. */
|
|
extern int terminal_use_visible_bell_p;
|
|
|
|
/* Non-zero means that this terminal can scroll lines up and down. */
|
|
extern int terminal_can_scroll;
|
|
|
|
/* Initialize the terminal which is known as TERMINAL_NAME. If this terminal
|
|
doesn't have cursor addressability, TERMINAL_IS_DUMB_P becomes non-zero.
|
|
The variables SCREENHEIGHT and SCREENWIDTH are set to the dimensions that
|
|
this terminal actually has. The variable TERMINAL_HAS_META_P becomes non-
|
|
zero if this terminal supports a Meta key. */
|
|
extern void terminal_initialize_terminal ();
|
|
extern VFunction *terminal_initialize_terminal_hook;
|
|
|
|
/* Return the current screen width and height in the variables
|
|
SCREENWIDTH and SCREENHEIGHT. */
|
|
extern void terminal_get_screen_size ();
|
|
extern VFunction *terminal_get_screen_size_hook;
|
|
|
|
/* Save and restore tty settings. */
|
|
extern void terminal_prep_terminal (), terminal_unprep_terminal ();
|
|
extern VFunction *terminal_prep_terminal_hook, *terminal_unprep_terminal_hook;
|
|
|
|
/* Re-initialize the terminal to TERMINAL_NAME. */
|
|
extern void terminal_new_terminal ();
|
|
extern VFunction *terminal_new_terminal_hook;
|
|
|
|
/* Move the cursor to the terminal location of X and Y. */
|
|
extern void terminal_goto_xy ();
|
|
extern VFunction *terminal_goto_xy_hook;
|
|
|
|
/* Print STRING to the terminal at the current position. */
|
|
extern void terminal_put_text ();
|
|
extern VFunction *terminal_put_text_hook;
|
|
|
|
/* Print NCHARS from STRING to the terminal at the current position. */
|
|
extern void terminal_write_chars ();
|
|
extern VFunction *terminal_write_chars_hook;
|
|
|
|
/* Clear from the current position of the cursor to the end of the line. */
|
|
extern void terminal_clear_to_eol ();
|
|
extern VFunction *terminal_clear_to_eol_hook;
|
|
|
|
/* Clear the entire terminal screen. */
|
|
extern void terminal_clear_screen ();
|
|
extern VFunction *terminal_clear_screen_hook;
|
|
|
|
/* Move the cursor up one line. */
|
|
extern void terminal_up_line ();
|
|
extern VFunction *terminal_up_line_hook;
|
|
|
|
/* Move the cursor down one line. */
|
|
extern void terminal_down_line ();
|
|
extern VFunction *terminal_down_line_hook;
|
|
|
|
/* Turn on reverse video if possible. */
|
|
extern void terminal_begin_inverse ();
|
|
extern VFunction *terminal_begin_inverse_hook;
|
|
|
|
/* Turn off reverse video if possible. */
|
|
extern void terminal_end_inverse ();
|
|
extern VFunction *terminal_end_inverse_hook;
|
|
|
|
/* Scroll an area of the terminal, starting with the region from START
|
|
to END, AMOUNT lines. If AMOUNT is negative, the lines are scrolled
|
|
towards the top of the screen, else they are scrolled towards the
|
|
bottom of the screen. */
|
|
extern void terminal_scroll_terminal ();
|
|
extern VFunction *terminal_scroll_terminal_hook;
|
|
|
|
/* Ring the terminal bell. The bell is run visibly if it both has one and
|
|
terminal_use_visible_bell_p is non-zero. */
|
|
extern void terminal_ring_bell ();
|
|
extern VFunction *terminal_ring_bell_hook;
|
|
|
|
/* The key sequences output by the arrow keys, if this terminal has any. */
|
|
extern char *term_ku, *term_kd, *term_kr, *term_kl;
|
|
|
|
#endif /* !_TERMINAL_H_ */
|