1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
/* vcons-refresh.c - Redraw a virtual console.
Copyright (C) 2002, 2003 Free Software Foundation, Inc.
Written by Marcus Brinkmann.
This file is part of the GNU Hurd.
The GNU Hurd 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.
The GNU Hurd 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, USA. */
#include <errno.h>
#include <assert.h>
#include "cons.h"
/* Redraw the virtual console VCONS, which is locked. */
void
cons_vcons_refresh (vcons_t vcons)
{
uint32_t start;
vcons->state.screen.cur_line = vcons->display->screen.cur_line;
vcons->state.screen.scr_lines = vcons->display->screen.scr_lines;
vcons->state.cursor.col = vcons->display->cursor.col;
vcons->state.cursor.row = vcons->display->cursor.row;
vcons->state.cursor.status = vcons->display->cursor.status;
vcons->state.bell.audible = vcons->display->bell.audible;
vcons->state.bell.visible = vcons->display->bell.visible;
vcons->state.flags = vcons->display->flags;
vcons->state.changes.written = vcons->display->changes.written;
if (vcons->state.screen.scr_lines < vcons->scrolling)
vcons->scrolling = vcons->scrolling;
cons_vcons_set_dimension (vcons, vcons->state.screen.width,
vcons->state.screen.height);
if (vcons->state.screen.cur_line >= vcons->scrolling)
start = vcons->state.screen.cur_line - vcons->scrolling;
else
start = (UINT32_MAX
- (vcons->scrolling - vcons->state.screen.cur_line)) + 1;
start %= vcons->state.screen.lines;
cons_vcons_write (vcons, vcons->state.screen.matrix
+ start * vcons->state.screen.width,
((vcons->state.screen.lines - start
< vcons->state.screen.height)
? vcons->state.screen.lines - start
: vcons->state.screen.height)
* vcons->state.screen.width, 0, 0);
if (vcons->state.screen.lines - start < vcons->state.screen.height)
cons_vcons_write (vcons, vcons->state.screen.matrix,
vcons->state.screen.height * vcons->state.screen.width
- (vcons->state.screen.lines - start)
* vcons->state.screen.width, 0,
vcons->state.screen.lines - start);
cons_vcons_set_cursor_pos (vcons, vcons->state.cursor.col,
vcons->state.cursor.row);
cons_vcons_set_cursor_status (vcons, vcons->state.cursor.status);
cons_vcons_set_scroll_lock (vcons, vcons->state.flags
& CONS_FLAGS_SCROLL_LOCK);
cons_vcons_update (vcons);
}
|
