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# Copyright (C) 1987-2015 by Jeffery P. Hansen
#
# 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.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# Last edit by hansen on Sun Dec 7 20:30:36 2008
#
#cut and paste into tty
#bind $w <Shift-KeyPress-Insert> " if { \[catch {selection get} sel\]==0 } { foreach c \[split \$sel \"\"\] { scan \$c %%c c; Simulator::cmdSend \"command $tkg_ttygat($w) key \$c\" } } "
#
# List of ttys
#
image create bitmap txtcurs -file "$bd/txtcurs.b"
#Security::allow TTY::post
#Security::allow TTY::data
#############################################################################
#
# Register the "safe" tty procedures
#
VPD::register TTY
VPD::allow TTY::post
VPD::allow TTY::data
namespace eval TTY {
variable tty_w
variable TD
proc post {n} {
variable tty_w
global simOn
set w [VPD::createWindow "TTY $n" -shutdowncommand "TTY::unpost $n"]
set tty_w($n) $w
text $w.txt -state disabled
pack $w.txt
$w.txt image create end -image txtcurs
bind $w <KeyPress> "TTY::sendChar $n \"%A\""
if {[info exists ::tkgate_isInitialized]} {
VPD::outsignal $n.TD TTY::TD($n)
VPD::insignal $n.RD -command "TTY::data $n" -format %d
VPD::insignal $n.FORCE -command "TTY::force $n" -format %s
}
}
proc sendChar {n key} {
variable TD
if { [string length $key ] == 1 } {
binary scan $key c c
set TTY::TD($n) $c
}
}
#
# Send character c as if it were typed in the keyboard.
#
proc force {n c} {
set L [string length $c]
for { set i 0 } { $i < $L } { incr i } {
TTY::sendChar $n [string range $c $i $i]
}
}
proc unpost {n} {
variable tty_w
destroy $tty_w($n)
unset tty_w($n)
}
proc data {n c} {
variable tty_w
set w $tty_w($n)
catch {
if { $c == 7 } {
bell
return
} elseif { $c == 127 } {
$w.txt configure -state normal
$w.txt delete "end - 3 chars"
$w.txt see end
$w.txt configure -state disabled
return
}
set x [format %c $c]
$w.txt configure -state normal
$w.txt insert "end - 2 chars" $x
$w.txt see end
$w.txt configure -state disabled
}
}
}
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