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#
# Copyright (c) 1993-1995 Regents of the University of California.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
# must display the following acknowledgement:
# This product includes software developed by the Computer Systems
# Engineering Group at Lawrence Berkeley Laboratory.
# 4. Neither the name of the University nor of the Laboratory may be used
# to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# @(#) $Header: /cs/research/mice/starship/src/local/CVS_repository/vic/ui-help.tcl,v 1.2 1998/12/15 13:35:04 ucackha Exp $ (LBL)
#
set helpno 0
proc helpitem { w text } {
global helpno
set f [option get . helpFont Vic]
set h $w.h$helpno
incr helpno
frame $h
canvas $h.bullet -width 12 -height 12
$h.bullet create oval 6 3 12 9 -fill black
message $h.msg -justify left -anchor w -font $f -width 460 -text $text
pack $h.bullet -side left -anchor ne -pady 5
pack $h.msg -side left -expand 1 -fill x -anchor nw
pack $h -expand 1 -fill both
}
proc build.help { } {
set w .help
if [winfo exists $w] { return }
create_toplevel $w "vic help"
frame $w.frame -borderwidth 2 -relief raised
set p $w.frame
helpitem $p "Transmit video by clicking on the ``Transmit'' button \
in the ``Menu'' window. You need video capture hardware to do this."
helpitem $p "Incoming video streams appear in the main vic window. \
If you see the message ``Waiting for video...'', then no one is transmitting \
video to the conference address you're running on. Otherwise, you'll \
see a thumbnail sized image and accompanying information for each source. \
Click on the thumbnail to open a larger viewing window. You can tile the \
thumbnails in multiple columns using the ``Tile'' menu in the ``Menu'' window."
helpitem $p "Clicking on the ``mute'' button for a given source will \
turn off decoding. It is usually a good idea to do \
this for your own, looped-back transmission."
helpitem $p "The transmission rate is controlled with the bit-rate \
and frame-rate sliders in the ``Transmission'' panel of the ``Menu'' window. \
The more restrictive setting limits the transmission rate."
helpitem $p "The video windows need not be fixed to a given source. \
The ``Mode...'' menu attached to a viewing window allows you to specify \
voice-switched and/or timer-switched modes. In timer-switched mode, the \
window automatically cycles through (unmuted) sources, while in \
voice-switched mode, the window switches to whomever is talking \
(using cues from vat). You can have more than one voice-switched window, \
which results in a simple LRU allocation of the windows to most recent \
speakers. See the man page for more details."
helpitem $p "If the user interface looks peculiar, you might \
have X resources that conflict with tk. A common problem is \
defining ``*background'' and/or ``*foreground''."
helpitem $p "Bugs and suggestions to vic@cs.ucl.ac.uk. Thanks."
button $w.frame.ok -text " Dismiss " -borderwidth 2 -relief raised \
-command "wm withdraw $w" -font [mediumfont]
pack $w.frame.ok -pady 6 -padx 6 -anchor e
pack $w.frame -expand 1 -fill both
}
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