path: root/x11vnc/tkx11vnc

#!/bin/sh
# the next line restarts using wish. \
exec wish "$0" "$@"
catch {rename send {}}
#
# Copyright (c) 2004-2005 Karl J. Runge <runge@karlrunge.com>
# All rights reserved.
#
#  This 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 software 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 software; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
#  USA.

#
# tkx11vnc v0.1
# This is a simple frontend to x11vnc.  It uses the remote control
# and query features (-remote/-query aka -R/-Q) to interact with it. 
# It is just a quick-n-dirty hack (it parses -help output, etc), but
# it could be of use playing with or learning about the (way too) many
# parameters x11vnc has.
# 
# It can be used to interact with a running x11vnc (see the x11vnc
# -gui option), or to set the parameters and then start up x11vnc.  
# 

#
# Below is a simple picture of how the gui should be laid out and how
# the menus should be organized.  Most menu items correspond to remote
# control commands. A trailing ":" after the item name means it is a string
# to be set rather than a boolean that can be toggled (e.g. the entry
# box must be used).
#
# Some tweak options may be set in the prefix "=" string.
#	A means it is an "Action" (not a true variable)
#	R means it is an action only valid in remote mode.
#	S means it is an action only valid in startup mode.
#	Q means it is an action worth querying after running.
#	P means the string can be +/- appended/deleted (string may not
#         be the same after the remote command)
#	G means gui internal item
#	F means can be set via file browse
#	D means for simple gui
#	-C:val1,... means it will be a checkbox (radio button)
#	   the "-" means no other options follow
#	0 means to skip the item.
#	-- means add a separator
#
proc set_template {} {
	global template
	set template "
Row: Actions   Clients   Permissions  Keyboard    Pointer  Help
Row: Displays  Screen    Tuning       Debugging   Misc

Actions
	=SA start
	=RA stop
	=DGA attach
	=DRA detach
	--
	=RA ping
	=RA update-all
	=GA clear-all
	-- D
	=DRA stop+quit 
	=DGA Quit 

Help
	=DGA gui
	=GA all

Clients
	=DRQA current:
	=DF   connect:
	=DRQA disconnect:
	--
	accept:
	gone:
	vncconnect
	-- D
	=D http
	httpdir:
	httpport:
	enablehttpproxy

Displays
	=D display:
	=F auth:
	=D desktop:
	=D rfbport:
	=0 gui:

Screen
	=DRA refresh
	=RA reset
	=RA blacken
	fixscreen:
	-- D
	=D scale:
	scale_cursor:
	--
	=D solid
	solid_color:
	--
	=GAL OverlayVisuals::
	overlay
	overlay_nocursor
	=GAL LOFF
	=GAL 8-Bit-Color::
	flashcmap
	shiftcmap:
	notruecolor
	=GAL LOFF
	=GAL SubWindow::
	id:
	sid:
	=GAL LOFF
	=GAL ResizeRotate::
	= xrandr
	=-C:resize,newfbsize,exit xrandr_mode:
	padgeom:
	=GAL LOFF
	--
	=P blackout:
	xinerama
	clip:
	--
	visual:
	rawfb:
	pipeinput:

Keyboard
	=D norepeat
	=D add_keysyms
	modtweak
	xkb
	--
	=FP remap:
	--
	skip_keycodes:
	sloppy_keys
	skip_dups
	--
	clear_mods
	clear_keys

Pointer
	=D-C:none,arrow,X,some,most cursor:
	=-C:1,2,3,4,5,6 arrow:
	--
	cursorpos
	=D nocursorshape
	--
	noxfixes
	=GAL AlphaBlending::
	noalphablend
	alphacut:
	alphafrac:
	alpharemove
	=GAL LOFF
	--
	buttonmap:
	--
	xwarppointer

Misc
	=GD-C:full,icon,tray WindowView:
	=GD simple-gui
	-- D
	=GA all-settings
	=RA remote-cmd:
	--
	=F rc:
	norc
	nofb
	=D nobell
	nolookup
	=GAL Selection::
	=D nosel
	noprimary
	seldir:
	=GAL LOFF
	--
	xtrap
	xrecord
	=RQA reset_record
	--
	bg
	=-C:ignore,exit sigpipe:
	=0 inetd
	rfbwait:

Debugging
	debug_pointer
	debug_keyboard
	=F logfile:
	=GA show-logfile
	=GA tail-logfile
	quiet
	--
	=GAL Misc-Debug::
	debug_xevents
	debug_xdamage
	=-C:0,1,2,3 debug_wireframe:
	debug_scroll
	debug_tiles
	debug_grabs
	dbg
	=GAL LOFF
	=GA show-start-cmd
	=DG debug_gui

Permissions
	=DRQA lock
	=DRQA unlock
	--
	=DFP allow:
	=D localhost
	=RA allowonce:
	listen:
	-- D
	=D shared
	=D forever
	timeout:
	--
	=D viewonly
	input:
	--
	safer
	unsafe
	=RA noremote
	--
	=GAL Passwords::
	passwd:
	viewpasswd:
	=F passwdfile:
	=F rfbauth:
	=0 storepasswd
	=GAL LOFF
	=GAL Misc-Perms::
	=S alwaysshared
	=S nevershared
	=S dontdisconnect
	=SQA deny_all
	=GAL LOFF

Tuning
	=D-C:0,1,2,3,4 pointer_mode:
	input_skip:
	=D nodragging
	--
	=GAL WireFrame::
	wireframe
	wireframe_mode:
	=-C:never,top,always wirecopyrect:
	=GAL LOFF
	=GAL ScrollCopyRect::
	=-C:never,keys,mouse,always scrollcopyrect:
	scr_area:
	scr_skip:
	scr_inc:
	scr_keys:
	scr_term:
	scr_keyrepeat:
	scr_parms:
	=GAL LOFF
	=GAL XDAMAGE::
	xdamage
	xd_area:
	xd_mem:
	=GAL LOFF
	-- D
	speeds:
	=D wait:
	defer:
	=D nap
	screen_blank:
	--
	=GAL SharedMemory::
	noshm
	flipbyteorder
	onetile
	=GAL LOFF
	=GAL Misc-Tuning::
	progressive:
	fs:
	gaps:
	grow:
	fuzz:
	wait_ui:
	nowait_bog
	readtimeout:
	snapfb
	threads
	wmdt:
	=GAL LOFF
"
}

proc set_internal_help {} {
	global helptext helpall

	# set some internal item help here:
	set helptext(start) "
Launch x11vnc with the settings you have prescribed in the gui.
The x11vnc process is started in an xterm window so you can see the
output, kill it, etc.
"

	set helptext(show-start-cmd) "
Displays in the text area what the x11vnc start command (i.e. the command
run by \"Actions -> start\") looks like for the current values of the
settings.  This can be done even in the attached state.  Intended for
debugging the gui.  The help item for \"Actions -> start\" gives the
same info.
"

	set helptext(debug_gui) "
Set debug_gui to get more output printed in the text area.
"

	set helptext(detach) "
No longer be associated with the x11vnc server.  Switch to non-connected
state.
"

	set helptext(attach) "
Attach to the x11vnc server, if possible.  Switches to connected state
if successful.  To change or set the X display use \"Displays -> display\"
"

	set helptext(ping) "
Check if x11vnc still responds to \"ping\" remote command.
"

	set helptext(update-all) "
Query the x11vnc server for the current values of all variables.
Populate the values into the gui's database.

Normally the gui will refresh this info every time it interacts
with the x11vnc server, so one doesn't need to use this action
very often (unless something else is changing the state of the
x11vnc server, or new clients have connected, etc).
"

	set helptext(clear-all) "
Forget any variable settings either entered in by you or retrieved
from a running x11vnc server.  Basically sets everything to 0 or
the string (unset).
"

	set helptext(all-settings) "
Displays the gui's database of all of the x11vnc server's current
settings.  Use \"Actions -> update-all\"  or \"Control+R\" to
refresh this list if it ever gets out of sync.
"

	set helptext(remote-cmd) "
Run a remote command (-R) or query (-Q) directly.  Only a few
remote commands are not on a menu, but for those few you can
run the command directly this way.  Just enter the command into
the Entry box when prompted.  Use the prefix \"Q:\" to indicate
a -Q query.  Examples: \"zero:20,20,100,100\", \"Q:ext_xfixes\"  
"

	set helptext(stop+quit) "
Send the stop command to the x11vnc server, then terminate the tkx11vnc gui.
"

	set helptext(show-logfile) "
View the current contents of the logfile (if it exists and is accessible
by the gui process).
"

	set helptext(tail-logfile) "
Run the tail(1) command with -f option on the logfile in an xterm.
"

	set helptext(Quit) "
Terminate the tkx11vnc gui.  Any x11vnc servers will be left running.
"

	set helptext(current) "
Shows a menu of currently connected VNC clients on the x11vnc server.

Allows you to find more information about them, change their input
permissions, or disconnect them.

You will be prompted to confirm any disconnections.
"

	set helptext(client) "
After selecting a VNC client from the \"Clients -> current\" menu,
you will be presented with a dialog that shows the information
about the VNC client.

You can choose to disconnect the client by clicking on the 
\"Disconnect\" checkbox and pressing \"OK\".  There will be a
confirmation dialog to doublecheck.

Alternatively, you can fine tune the VNC client's input permissions
by selecting any of the Keystrokes, Mouse Motion, or Button Clicks
checkboxes and pressing \"OK\".  This is like the \"-input\" option
but on a per-client basis.

To not change any aspects of the VNC client press \"Cancel\".
"

	set helptext(solid_color) "
Set the -solid color value.
"

	set helptext(xrandr_mode) "
Set the -xrandr mode value.
"

	set helptext(wireframe_mode) "
Set the -wireframe mode string value.
"

	set helptext(simple-gui) "
Toggle between menu items corresponding the most basic ones
and all possible settings.  I.e. toggle between a simple gui
and one for power users.
"

	set helptext(Tray) "
The tray/icon mode (started with \"x11vnc -gui tray ...\", etc.) presents
a small icon that indicates the status of the running x11vnc server.

Depending on your environment, this icon may be embedded in a system
tray or applet dock, or simply be a standalone window.  \"-gui tray\"
will attempt to embed the icon in the system tray, while \"-gui icon\"
is for a standalone window.  Use \"-gui tray=setpass\" (or icon=setpass)
to be prompted to set the session password at startup.

When the icon has a light background, that means no VNC viewers are
currently connected to the VNC display.

When the icon has a dark background (i.e. reverse-video), that means at
least one VNC viewer is connected to the VNC display.

Moving the mouse pointer over the icon will popup a \"status balloon\"
indicating the VNC display name and the names and info of any connected VNC
viewers.  Press the middle mouse button if the balloon does not appear.

Clicking the left or right mouse button on the icon displays a menu
of actions:

    Properties      - Brings up the Properties dialog to set some basic
                      parameters.  The full tkx11vnc GUI may be accessed
                      via the \"Advanced ...\" button.  Press \"Help ...\"
                      in the Properties dialog for more info.
    
    Help            - Displays this help text.
    
    New Client      - Presents an entry box where you type in the name
                      of a computer that is running a VNC viewer in
                      \"listen\" mode (e.g. vncviewer -listen).  For a
                      non-standard listening port use \"host:port\".

                      Pressing \"OK\" will initiate the reverse
                      connection.  Use a blank hostname to skip it.
    
    Disconnect All  - Disconnects all current VNC viewers.

    Window View     - Switch between the \"full\" gui (also known as
                      \"Advanced\"), \"icon\" mode (small icon window with
                      popups), or \"tray\" mode (small icon embedded in the
                      system tray).  This is a shortcut for the action:
                      \"Properties -> Advanced -> Misc -> WindowView\".
    
    Stop x11vnc     - Directs the x11vnc server to disconnect all vncviewers
                      and then exit.  The tray/icon GUI then exits as well.


If the x11vnc server stops for any reason, the tray/icon gui will exit.

If you delete the tray/icon (e.g. X out button), that is the same
as the \"Stop x11vnc\" action in the menu. (This will disconnect any
VNC viewer you are currently using to access the display).
"

	set helptext(Properties) "
The Properties dialog allows you to set some basic parameters of a
running x11vnc server.  After modifying them press \"OK\" or \"Apply\"
to apply the changes, or press \"Cancel\" to skip applying them.

 - \"Accept Connections\" toggles whether VNC viewers are allowed
   to connect or not.  It corresponds to the \"-R unlock\" and \"-R lock\"
   remote-control commands.
   
 - \"Ask for Confirmation\" toggles whether a popup menu will be presented
   at the X display when a new VNC viewer attempts to connect.  The person
   sitting at the X display can choose to accept or reject the connection
   or accept the connection in View-Only mode.  It corresponds to the 
   \"-R accept:popup\" and \"-R accept:\" remote-control commands.
   
 - \"All Clients ViewOnly\" toggles whether the entire VNC desktop is
   view only.  All clients will only be able to watch when this is set
   (regardless of how they logged in).  It corresponds to the
   \"-R viewonly\" and \"-R noviewonly\" remote-control commands.
   
 - \"Shared\" toggles whether multiple simultaneous connections are
   allowed or not.  It corresponds to the \"-R shared\" and \"-R noshared\"
   remote-control commands.

 - \"Password\" lets you set the session password viewers may use to gain full
   access to the display.
   
 - \"ViewOnly Password\" lets you set the session password viewers may
   use to gain view only access to the display.

NOTE: These \"session\" passwords only last for the current x11vnc
session (they are not remembered, see the -storepasswd, -passwdfile,
and -rfbauth x11vnc options for using stored passwords).

If you set \"Password\" to the empty string that makes the \"View-Only
Password\" empty as well and removes the need for any password to log in.

If you set \"ViewOnly Password\" to the empty string that just removes
the ViewOnly log in aspect: \"Password\" is still required to log in.

 - The \"Help ...\" button shows this help text.
   
 - The \"Advanced ...\" button replaces the Properties dialog with the full
   tkx11vnc GUI.  All dynamic settings can be modified in the full GUI.
" 

	set helptext(all) $helpall

	set helptext(Misc-Tuning:) "
x11vnc has what seems like hundreds of tuning parameters.  In this
sub-menu we place some lesser used ones.  Most likely you'll want to
leave them at their default values, but you can try them out quickly
with the gui to see if they improve things.
"

	set helptext(Passwords:) "
The items in this sub-menu pertain to setting passwords.  Note that x11vnc
has two types of password files: RealVNC-style ones (you can create them
with x11vnc -storepasswd or other VNC utility program) you use these
via -rfbauth; and plain-text file passwords you use via -passwdfile.

Normally passwords cannot be changed by remote-control (e.g. the gui),
but for the case of the \"Icon\" and \"Tray\" modes this constraint has
been relaxed.

In neither the RealVNC-style nor the plain-text file cases should the
password files be readable by users you do not want to access the VNC
server.  Contrary to popular belief, the  RealVNC-style passwords are
not encrypted, merely obscured.

x11vnc has the even less secure -passwd and -viewpasswd supplied on
the command line.  Be careful with these since they could be read by
users with something like the ps(1) command.  On some operating systems
x11vnc tries to quickly overwrite them on the command line but it doesn't
work everywhere.

Regarding ViewOnly passwords (where a VNC client using that password
can only watch the screen, not interact with it), this is not available
with -rfbauth, but only with -passwdfile, -passwd, and -viewpasswd.
"

	set helptext(Misc-Perms:) "
In this sub-menu we provide some lesser used permission options.
Regarding -alwaysshared, -nevershared, and -dontdisconnect, you probably
should never use them and just use x11vnc's -shared and -forever options
instead (these give basically the same functionality and if you mixed
them too much unexpected things may happen).
"

	set helptext(AlphaBlending:) "
In this sub-menu we provide some tweak parameters for cursors (little
icon at the mouse pointer) that have transparency (i.e. an Alpha channel
in addition to Red, Green, and Blue RGB channels).  For these cursors,
some of the graphics underneath the cursor is allowed to be blended in:
e.g. a drop-shadow (a terrible effect IMNSHO).

AlphaBlending for x11vnc is only available when the XFIXES X extension is
present (since otherwise it cannot see the cursors at all and so applies
heuristics to show some fake cursors).  AlphaBlending is only a problem
with x11vnc when the cursors are not opaque.

Opaque cursors (e.g. bitmap or simply colored cursor) are rendered
correctly by x11vnc.  Only when there is transparency does x11vnc have
to make some approximation to transform the cursor to be opaque (the
VNC protocol does not provide for an alpha channel in cursors, only RGB).

The items in this sub-menu let you tweak x11vnc's approximation scheme
for cursors with transparency.  Hopefully you won't have to use them.
Certain cursor \"themes\" may require adjustment however.
"
	set helptext(OverlayVisuals:) "
In this sub-menu are some options that involve fixing color problems
for \"Overlay\" or \"Multi-Depth\" visuals.  This problem is rare
since overlay and multi-depth visual video hardware is rare. 
Some Sun, SGI, and HP machines are known to have them.

The short answer is if you have a multi-depth visual display (e.g.  8 and
24 bits), and you see messed up colors in x11vnc try the \"-overlay\"
option on Solaris or IRIX.

A brief Background on pixels, color, and visuals:

   Pixels (picture elements) are kept in video memory as a certain number
   of bits-per-pixel (bpp).  Most common are 8bpp, 16bpp, and 32bpp.
   Less common are 24bpp, 4bpp, and 1bpp (monochrome).

   How pixel values (i.e. values of the bits) are rendered into colors on
   the screen can be done via different \"Recipes\".  These different
   recipes are referred to as \"visuals\".  E.g. for 8bpp there is
   a PseudoColor visual that maintains a mapping (that can be changed
   dynamically) of the pixel values (256 possible ones) into RGB values.
   Other 8bpp visuals, e.g. StaticGrey and TrueColor have fixed, regular
   mappings and so provide less variation in kinds of colors.

   A visual's \"depth\" is how many of the pixels are used in the
   actual recipe.  This may sound wasteful (i.e. not using some of the
   bits), but for 32bpp (4 billion colors) that is too much and nearly
   always only 24 for them are used.  The most common Visual seems to
   be depth 24 TrueColor at 32bpp.  This provides 16 million colors
   which is more than the number of pixels on most screens (1280x1024 =
   1.3 million pixels).  Another sometimes used visual that ignores some
   bits is depth 15 TrueColor at 16bpp.

OK, now, finally, to the Overlay Visuals.  Some hardware (or software
emulations) allow different depth visuals to be used on the display
at the same time.  The pixels of windows using different depth visuals
may overlap.

The most common seems to be both 8 and 24 depth visuals on a 32bpp setup.
24 of the pixels can be used for one visual and the remaining 8 for the
other.  This is sometimes referred to as \"8+24\" mode.  Furthermore,
a speedup is achieved because writing graphics data to, say, the 8bit
visual does not destroy the image data in the 24bit visual.  Evidently
popup menus can be done very quickly this way: they use the 8bit visual
and when the popup goes away the graphics data in the 24bit visual is
immediately reexposed without having the application redraw it.

Also, some legacy applications can only use 8bpp visuals.  But in these
days of high color graphics and web browsers one would like the rest
of the desktop to use depth 24 visuals.  They often work on the multi
depth visuals.

How does this effect x11vnc?  x11vnc nearly always polls the root window
(container of all other windows).  The root window will be one depth,
e.g. 8 or 24.  Any windows using the *other* depth will appear to have
messed up colors (or just be black or some other solid color) when viewed
via x11vnc.

How to fix?  Solaris and IRIX provide an API to extract the full snapshot
of the display with all the colors correct.  It comes to x11vnc as depth
24 TrueColor.  To enable this use the \"-overlay\" option.  Performance
may be slower, but if the colors are correct that is a big improvement.
"

	set helptext(8-Bit-Color:) "
Some older displays (e.g. with limited Video RAM) use 8 bits-per-pixel
color.  This allows for only 256 different colors on the screen at the
same time.  This sometimes leads to problems with viewing these 8bpp
displays via x11vnc.  This sub-menu has some options that correspond to
workarounds for this case.  If you can configure the machine to use 16bpp
it may be worth it to avoid the color problems (e.g. color flashing
as the 8bit colormap is switched).
"
	set helptext(SubWindow:) "
This sub-menu has a couple options regarding having x11vnc poll a 
single window, not the entire display.  This way just the window
is shared.

Note if the application pops up multiple windows they are not tracked
and shared.  So this is not application sharing.  The application has to
be very simple (e.g. a simple terminal or the image window on a webcam)
for this mode to be usable.
"
	set helptext(ResizeRotate:) "
This sub-menu has some options regarding screens that support the X
Resize, Reflection, and Rotation Extension (RANDR), and one expects screen
resizing, reflection, or rotation to take place during the x11vnc session.
This is pretty rare, but x11vnc seems to handle it reasonably well using
this X extension.

This mode is on by default in -id mode to try to track the changing
size of the SubWindow.  It is not on by default for full-screen mode
because of the extra overhead, etc.
"

	set helptext(WireFrame:) "
This sub-menu has some options for the x11vnc wireframing speedup scheme.

For x11vnc, Wireframing means to watch for toplevel windows being Opaquely
Moved or Resized.  When x11vnc detects this, it stops polling the screen
and simply shows a \"wireframe\" outline of the window as it is being
moved or resized.  This avoids \"screen polling thrashing\" when the
screen is changing so rapidly during this period.  For various reasons
this is usually much faster then letting the window manager do its
own wireframing (you are encouraged to do Opaque moves and resizes
when using x11vnc!)

Also, once a moved window is released in its new position, x11vnc uses
the VNC CopyRect encoding to very efficiently update the VNC viewers
(each just copies the image data locally).

This sort of scheme was used much in the 1990's on local displays because
video hardware was slow at the time.  x11vnc tries to use this same trick
as a speedup for its activities (the network is much slower than video
hardware writes, and the video hardware reads that x11vnc uses to poll
the screen are still slow today).
"

	set helptext(ScrollCopyRect:) "
This sub-menu has some options for the x11vnc Scroll detection and
CopyRect speedup scheme.

For this mode, x11vnc \"spies\" on communication between the X server and
applications using the RECORD extension.  It looks for various patterns
to detect a scrolled window.  This only works for some applications,
fortunately some important ones.

Once the scroll is detected it uses the VNC CopyRect encoding for a
big speedup.  Screen polling is also sped up for this scheme.

There are many tweakable parameters for this mode and they are described
in the sub-menu items.
"

	set helptext(XDAMAGE:) "
The DAMAGE X extension allows the X server to send signals to x11vnc
telling it which regions of the screen have been changed.  This improves
x11vnc's performance markedly.  The DAMAGE extension must be available
on the display for this to work.

Unfortunately DAMAGE cannot be trusted completely for the changed regions,
because often the reported changed region is much larger than the actual
changed regions.  Nevertheless, x11vnc uses the DAMAGE information very
effectively as hints to improve its performance.

The items in the sub-menu allow tweaking x11vnc's DAMAGE algorithm.
"

	set helptext(SharedMemory:) "
This sub-menu provides some options regarding SYSV shared memory usage
(shm) by x11vnc.  Usually you want shm turned on because the x11vnc
process is nearly always running on the same machine the X server process
is running on.  SharedMemory gives a performance speedup.  However,
if you need to modify this scenario these options allow you to.
"

	set helptext(Misc-Debug:) "
This sub-menu contains a lot of debugging parameters usually used
for debugging x11vnc itself.  This is unlike the -debug_pointer and
-debug_keyboard options that are useful in learning information, quirks,
etc. about your local display and environment.
"

	set helptext(Selection:) "
This sub-menu contains some options centering around the Selection
(also referred to as the Clipboard, Cutbuffers, etc).  x11vnc will try
to exchange the selections between the VNC viewers and the X server.
"

	set helptext(WindowView) "
Set the Window View Mode for the gui.  There are three modes:

  - full:  Presents the full gui (Actions, Clients, etc, buttons,
           and the Text area and Set/Entry box).

  - icon:  Presents a small icon instead of the full gui.  Moving
           the mouse over it shows the VNC display name and any
           connected clients.  Clicking on the icon pops up a menu
           of actions to perform.  Among them is \"Properties\" that
           allows setting more parameters.  Clicking on \"Advanced\"
           in \"Properties\" brings up the full gui.

  - tray:  Attempt to embed the small icon in the system tray.  If
           this fails it will resort to icon mode where the small icon
           is a standalone window.

Note that in \"full\" mode if you delete the full gui window the gui
terminates (but the x11vnc server keeps running).  However under \"icon\"
or \"tray\" mode if you bring up the full gui window via \"Properties ->
Advanced\" and then delete it the gui does NOT terminate.

Also note that by default in \"icon\" mode if you delete the icon
window both the gui and the x11vnc server terminate.
"

	set helptext(gui) "
tkx11vnc is a simple frontend to x11vnc.  Nothing fancy, it merely
provides an interface to each of the many x11vnc command line options and
remote control commands.  See \"Help -> all\" for much info about x11vnc.

For a simplier gui, run x11vnc in \"tray\" or \"icon\" mode such as
\"-gui tray\", \"-gui icon\", or \"-gui tray=setpass\".  In that
mode the full gui is only available under \"Advanced ...\".

Also, \"-gui ez\" will show fewer menu items (toggle via Misc -> simple_gui)

All menu items have a (?) button one can click on to get more information
about the option or command.

There are two states tkx11vnc can be in:

	1) Available to control a running x11vnc process.

	2) Getting ready to start a x11vnc process.

Most people will just use state 1).

In state 1) the Menu items available in the menus are those that
correspond to the x11vnc \"remote control\" commands.  See the -remote
entry under \"Help -> all\" for a complete list.  Also available is
the \"Actions -> stop\" item to shut down the running x11vnc server,
thereby changing to state 2).  There are other actions available too.

In state 2) the Menu items available in the menus (\"Actions\", \"Clients\",
etc.) are those that correspond to command line options used in starting
an x11vnc process, and the \"Actions -> start\" item executes
x11vnc thereby changing to state 1).  To see what x11vnc startup command
you have built so far, look at the (?) help for  \"Actions -> start\"
and it will show you what the command looks like.

There is much overlap between the menu items available in state 1)
and state 2), but it is worth keeping in mind it is not 100%.
For example, you cannot set passwords or password files in state 1).
(update: simple password setting is now allowed in \"tray\" or \"icon\" mode).


Also note that there may be *two* separate X displays involved, not just
one:  1) the X display x11vnc will be polling (and making available to
VNC viewers), and 2) the X display this GUI is intended to display on.

For example, one might use ssh to access the remote machine where the
GUI would display on :11 and x11vnc would poll display :0.  By default
the gui will display on the value in the DISPLAY env. variable followed
by the value from the -display option.  To override this, use something
like: \"-gui otherhost:0\", etc.


GUI components: 
--- ----------

1) At the top of the gui is a info text label where information will
   be posted, e.g. when traversing menu items text indicating how to get
   help on the item and its current value will be displayed.

2) Below the info label is the area where the menu buttons, \"Actions\",
   \"Clients\", etc., are presented.  If a menu item has a checkbox,
   it corresponds to a boolean on/off variable.  Otherwise it is
   either a string variable, or an action not associated with a
   variable (for the most part).

3) Below the menu button area is a label indicating the current x11vnc
   X display being polled and the corresponding VNC display name.  Both
   will be \"(*none*)\" when there is no connection established.

4) Below the x11 and vnc displays label is a text area there scrolling
   information about actions being taken and commands being run is displayed.
   To scroll click in the area and use PageUp/PageDown or the arrow keys.

5) At the bottom is an entry area.  When one selects a menu item that
   requires supplying a string value, the label will be set to the
   parameter name and one types in the new value.  Then one presses the
   \"OK\" button or presses \"Enter\" to set the value.  Or you can press
   \"Cancel\" or \"Escape\" to avoid changing the variable.

   Many variables are boolean toggles (for example, \"Permissions ->
   viewonly\") or Radio button selections.  Selecting these menu items
   will NOT activate the entry area but rather toggle the variable
   immediately.


CASCADES BUG: There is a bug not yet worked around for the cascade menus
where the (?) help button gets in the way.  To get the mouse over to
the cascade menu click and release mouse to activate the cascade, then
you can click on its items.  Dragging with a mouse button held down will
not work (sorry!).


Key Bindings:

	In the Text Area: Control-/ selects all of the text.
	Anywhere: Control-d invokes \"Actions -> detach\"
	Anywhere: Control-a invokes \"Actions -> attach\"
	Anywhere: Control-p invokes \"Actions -> ping\"
	Anywhere: Control-u and Control-r invoke \"Actions -> update-all\"


Misc:

Since x11vnc has so many settings and to avoid further confusion,
the libvncserver options:

	-alwaysshared
	-nevershared
	-dontdisconnect

are not available for changing in a running x11vnc (even though it
is feasible).  These options overlap with the x11vnc options -shared
and -forever which are hopefully enough for most usage.  They may be
specified for x11vnc startup if desired.

"

global beginner_mode
if {$beginner_mode} {
	set helptext(gui) "
tkx11vnc is a simple frontend to x11vnc.  It is currently running in
\"ez\" or \"simple\" mode.  For many more options run it in normal
mode by toggling \"Misc -> simple_gui\".

All menu items have a (?) button one can click on to get more information
about the option or command.

GUI components: 
--- ----------

1) At the top of the gui is a info text label where information will
be posted, e.g. when traversing menu items text indicating how to get
help on the item and its current value will be displayed.

2) Below the info label is the area where the menu buttons, Actions,
Clients, etc., are presented.  If a menu item has a checkbox,
it corresponds to a boolean on/off variable.  Otherwise it is
either a string variable, or an action not associated with a
variable (for the most part).

3) Below the menu button area is a text label indicating the current x11vnc
X display being polled and the corresponding VNC display name.  Both
will be \"(*none*)\" when there is no connection established.

4) Below the x11 and vnc displays text label is a text area there scrolling
information about actions being taken and commands being run is displayed.
To scroll click in the area and use PageUp/PageDown or the arrow keys.

5) At the bottom is an entry area.  When one selects a menu item that
requires supplying a string value, the label will be set to the
parameter name and one types in the new value.  Then one presses the
\"OK\" button or presses \"Enter\" to set the value.  Or you can press
\"Cancel\" or \"Escape\" to avoid changing the variable.  Some variables
are boolean toggles (for example, \"Permissions -> viewonly\") or Radio
button selections.  Selecting these menu items will not activate the
entry area but rather toggle the variable directly.


Cascades Bug: There is a bug not yet worked around for the cascade menus
where the (?) help button gets in the way.  To get the mouse over to
the cascade menu click and release mouse to activate the cascade, then
you can click on its items.  Dragging with a mouse button held down will
not work (sorry!).

"
}

}

proc center_win {w} {
	wm withdraw $w
	set x [expr [winfo screenwidth  $w]/2 - [winfo reqwidth  $w]/2];
	set y [expr [winfo screenheight $w]/2 - [winfo reqheight $w]/2];
	wm geometry $w +$x+$y
	wm deiconify $w
	update
}

proc textwidth {text} {
	set min 0;
	foreach line [split $text "\n"] {
		set n [string length $line]
		if {$n > $min} {
			set min $n
		}
	}
	return $min
}

proc textheight {text} {
	set count 0;
	foreach line [split $text "\n"] {
		incr count
	}
	return $count
}

proc set_name {name} {
	global full_win icon_mode
	global saved_set_name

	if {![info exists saved_set_name]} {
		set saved_set_name "tkx11vnc"
	}
	if {$name == "RESTORE"} {
		set name $saved_set_name
	} else {
		set saved_set_name $name
	}
	if {![info exists full_win]} {
		return
	}
	if {$icon_mode} {
		set w $full_win
	} else {
		set w "."
	}
	wm title    $w "$name"
	wm iconname $w "$name"
}

proc make_toplevel {w {title ""}} {
	catch {destroy $w}
	toplevel  $w;
	bind $w <Escape> "destroy $w"
	if {$title != ""} {
		wm title    $w $title
		wm iconname $w $title
	}
}

proc textwin {name title text} {
	global max_text_height max_text_width
	global bfont ffont

	set width  [textwidth $text]
	incr width
	if {$width > $max_text_width} {
		set width $max_text_width
	}
	set height [textheight $text]
	if {$height > $max_text_height} {
		set height $max_text_height
	}

	set w ".text_$name"
	make_toplevel $w $title

	frame     $w.f -bd 0;
	pack      $w.f -fill both -expand 1
	text      $w.f.t -width $width -height $height -setgrid 1 -bd 2 \
			-yscrollcommand "$w.f.y set" -relief ridge \
			-font $ffont;
	scrollbar $w.f.y -orient v -relief sunken -command "$w.f.t yview";
	button    $w.f.b -text "Dismiss" -command "destroy $w" -font $bfont \
			-pady 2

	$w.f.t insert 1.0 $text;

	bind $w <Enter> "focus $w.f.t"

	wm withdraw $w
	pack $w.f.b -side bottom -fill x 
	pack $w.f.y -side right -fill y;
	pack $w.f.t -side top -fill both -expand 1;
	update

	center_win $w
}

proc active_when_connected {item} {
	global helpremote helptext
	global icon_mode

	if {$icon_mode} {
		if {$item == "passwd"} {
			return 1
		}
		if {$item == "viewpasswd"} {
			return 1
		}
	}

	if {[opt_match G $item]} {
		return 1
	} elseif {[opt_match R $item]} {
		return 1
	} elseif {[opt_match S $item]} {
		return 0
	} elseif {[is_action $item]} {
		if {[opt_match R $item]} {
			return 1
		} else {
			return 0
		}
	} elseif {[info exists helpremote($item)]} {
		return 1
	} else {
		return 0
	}
}

proc active_when_starting {item} {
	global helpremote helptext beginner_mode

	if {$beginner_mode} {
		if {[opt_match G $item]} {
			return 1
		}
		if {$item == "display"} {
			return 1
		}
		if {$item == "debug_gui"} {
			return 1
		}
		return 0
	}

	if {[opt_match G $item]} {
		return 1
	} elseif {[opt_match S $item]} {
		return 1
	} elseif {[opt_match R $item]} {
		return 0
	} elseif {[is_action $item]} {
		if {[opt_match S $item]} {
			return 1
		} else {
			return 0
		}
	} elseif {[info exists helptext($item)]} {
		return 1
	} else {
		return 0
	}
}

proc help_win {item} {
	global helptext helpremote menu_var
	global query_ans query_aro
	global beginner_mode

	set ok 0
	set text "Help on $item:\n\n"

	if {[is_gui_internal $item]} {
		if {$item != "gui" && $item != "all" && $item != "Misc-Tuning:" \
		    && $item != "Properties" && $item != "Tray"} {
			append text "    + Is a gui internal Action (cannot be set).\n";
		}
	} elseif {[is_action $item]} {
		append text "    + Is a remote control Action (cannot be set).\n";
	} elseif {[active_when_connected $item]} {
		append text "    + Can be changed in a running x11vnc.\n";
	} else {
		append text "    - Cannot be changed in a running x11vnc.\n";
	}
	if {[is_gui_internal $item]} {
		;
	} elseif {[active_when_starting $item]} {
		append text "    + Can be set at x11vnc startup.\n";
	} else {
		if {! $beginner_mode} {
			append text "    - Cannot be set at x11vnc startup.\n";
		}
	}
	append text "\n"

	if {[info exists helptext($item)]} {
		append text "\n"
		if {[is_gui_internal $item]} {
			append text "==== x11vnc help: ====\n";
		} else {
			append text "==== x11vnc startup option help: ====\n";
		}
		append text "\n"
		append text $helptext($item)
		append text "\n"
		set ok 1
	}

	if {[info exists helpremote($item)]} {
		append text "\n"
		append text "==== x11vnc remote control help: ====\n";
		append text "\n"
		append text $helpremote($item)
		set ok 1
	}

	if {![is_action $item] && [info exists menu_var($item)]} {
		global unset_str
		append text "\n\n"
		append text "==== current $item value: ====\n";
		append text "\n"

		if {$item == "passwd" || $item == "viewpasswd"} {
			;
		} elseif {$menu_var($item) == ""} {
			append text "$unset_str\n"
		} else {
			append text "$menu_var($item)\n"
		}
		if {$item == "http" || $item == "httpdir" || $item == "httpport"} {
			global vnc_url;
			append text "\nURL: $vnc_url\n"
		}
	}

	if {$item == "start"} {
		set str [get_start_x11vnc_txt]
		append text $str
		append_text "$str\n"
		append text "\nPossible \$HOME/.x11vncrc settings for this command:\n\n"
		set rctxt [get_start_x11vnc_cmd 1]
		append text "$rctxt\n"
	}

	regsub -all { } $item " " name

	if {$ok} {
		textwin $name "x11vnc help: $item" "$text";
	}
	return $ok
}

proc parse_help {} {
	global env x11vnc_prog;
	global helpall helptext;

	set helppipe [open "| $x11vnc_prog -help" "r"];
	if {$helppipe == ""} {
		puts stderr "failed to run $x11vnc_prog -help";
		exit 1;
	}

	set sawopts 0;
	set curropt "";
	while {[gets $helppipe line] > -1} {
		append helpall "$line\n"	

		# XXX
		if {[regexp {^Options:} $line]} {
			set sawopts 1;
			continue;
		}
		# XXX
		if {[regexp {^These options} $line]} {
			continue;
		}

		if {! $sawopts} {
			continue;
		}
		if {[regexp {^-([A-z_][A-z_]*)} $line match name]} {
			set allnames($name) 1;
			if {"$curropt" != "no$name" && "no$curropt" != "$name"} {
				set curropt $name;
				set helptext($curropt) "$line\n";
			} else {
				append helptext($curropt) "$line\n";
			}
		} elseif {$curropt != ""} {
			append helptext($curropt) "$line\n";
		}
	}
	foreach name [array names allnames] {
		if {[regexp {^no} $name]} {
			regsub {^no} $name "" pair
		} else {
			set pair "no$name"
		}
		if {[info exists helptext($name)]} {
			if ![info exists helptext($pair)] {
				set helptext($pair) $helptext($name);
			}
		} elseif {[info exists helptext($pair)]} {
			if ![info exists helptext($name)] {
				set helptext($name) $helptext($pair);
			}
		}
	}

	set_internal_help
}

proc tweak_both {new old} {
	tweak_help $new $old
	tweak_remote_help $new $old
}

proc tweak_remote_help {new old} {
	global helpremote
	if ![info exists helpremote($new)] {
		if {[info exists helpremote($old)]} {
			set helpremote($new) $helpremote($old)
		}
	}
}

proc tweak_help {new old} {
	global helptext
	if ![info exists helptext($new)] {
		if {[info exists helptext($old)]} {
			set helptext($new) $helptext($old)
		}
	}
}

proc parse_remote_help {} {
	global helpremote helptext help_indent remote_name;

	set sawopts 0;
	set curropt "";
	set possopts "";
	set offset [expr $help_indent - 1];
	foreach line [split $helptext(remote) "\n"] {
		
		set line [string range $line $offset end];

		# XXX
		if {[regexp {^The following -remote/-R commands} $line]} {
			set sawopts 1;
			continue;
		}
		# XXX
		if {[regexp {^The vncconnect.*command} $line]} {
			set sawopts 0;
		}

		if {! $sawopts} {
			continue;
		}
		if {[regexp {^([A-z_][A-z_:]*)} $line match name]} {
			regsub {:.*$} $name "" popt
			lappend possopts $popt
			if {"$curropt" != "no$name" && "no$curropt" != "$name"} {
				set curropt $name;
				regsub {:.*$} $curropt "" curropt
				set remote_name($curropt) $name
				set helpremote($curropt) "$line\n";
			} else {
				append helpremote($curropt) "$line\n";
			}
		} elseif {$curropt != ""} {
			append helpremote($curropt) "$line\n";
		}
	}

	foreach popt $possopts {
		if {[info exists helpremote($popt)]} {
			continue
		}
		if {[regexp {^no} $popt]} {
			regsub {^no} $popt "" try
		} else {
			set try "no$popt"
		}
		if {[info exists helpremote($try)]} {
			set helpremote($popt) $helpremote($try)
		}
	}
}

proc parse_query_help {} {
	global query_ans query_aro query_ans_list query_aro_list helptext;

	set sawans 0;
	set sawaro 0;
	set ans_str ""
	set aro_str ""

	foreach line [split $helptext(query) "\n"] {

		if {! $sawans && [regexp {^ *ans=} $line]} {
			set sawans 1
		}
		if {! $sawans} {
			continue
		}

		if {[regexp {^ *aro=} $line]} {
			set sawaro 1
		}
		if {$sawaro && [regexp {^[ 	]*$} $line]} {
			set sawans 0
			break
		}

		regsub {ans=} $line "" line
		regsub {aro=} $line "" line
		set line [string trim $line]

		if {$sawaro} {
			set aro_str "$aro_str $line"
		} else {
			set ans_str "$ans_str $line"
		}
	}

	regsub -all {  *} $ans_str " " ans_str
	regsub -all {  *} $aro_str " " aro_str

	set ans_str [string trim $ans_str]
	set aro_str [string trim $aro_str]
	set query_ans_list [split $ans_str]
	set query_aro_list [split $aro_str]

	foreach item $query_ans_list {
		if {[regexp {^[ 	]*$} $item]} {
			continue
		}
		set query_ans($item) 1
	}
	foreach item $query_aro_list {
		if {[regexp {^[ 	]*$} $item]} {
			continue
		}
		set query_aro($item) 1
	}
}

proc in_debug_mode {} {
	global menu_var
	if {![info exists menu_var(debug_gui)]} {
		return 0
	}
	return $menu_var(debug_gui)
}

# Menubar utilities:
proc menus_state {state} {
	global menu_b

	foreach case [array names menu_b] {
		set menu_button $menu_b($case)
		if {![winfo exists $menu_button]} {
			continue
		}
		$menu_button configure -state $state
	}
}

proc menus_enable {} {
	global menus_disabled

	menus_state "normal"
	set menus_disabled 0
}

proc menus_disable {} {
	global menus_disabled

	set menus_disabled 1
	menus_state "disabled"
}

# Entry box utilities:
proc entry_state {x state} {
	global entry_box entry_label entry_ok entry_help entry_skip entry_browse
	global old_labels
	if {$x == "all"} {
		if {!$old_labels} {
			$entry_label configure -state $state
		}
		$entry_box    configure -state $state
		$entry_ok     configure -state $state
		$entry_skip   configure -state $state
		$entry_help   configure -state $state
		$entry_browse configure -state $state
	} elseif {$x == "label"} {
		if {!$old_labels} {
			$entry_label configure -state $state
		}
	} elseif {$x == "box"} {
		$entry_box    configure -state $state
	} elseif {$x == "ok"} {
		$entry_ok     configure -state $state
	} elseif {$x == "skip"} {
		$entry_skip   configure -state $state
	} elseif {$x == "help"} {
		$entry_help   configure -state $state
	} elseif {$x == "browse"} {
		$entry_browse configure -state $state
	}
}

proc entry_enable {{x "all"}} {
	entry_state $x normal
}

proc entry_disable {{x "all"}} {
	entry_state $x disabled
}

proc entry_browse_button {{show 1}} {
	global entry_browse
	if {$show} {
		pack $entry_browse -side left
	}  else {
		pack forget $entry_browse
	}
}
proc entry_focus {} {
	global entry_box
	focus $entry_box
}
proc entry_select {} {
	global entry_box
	$entry_box selection range 0 end
}
proc entry_get {} {
	global entry_box
	return [$entry_box get]
}
proc entry_insert {str} {
	global entry_box
	entry_delete
	$entry_box insert end $str
	$entry_box icursor end
}
proc entry_delete {} {
	global entry_box
	$entry_box delete 0 end
}


# Utilities for remote control and updating vars.

proc push_new_value {item name new {query 1}} {
	global menu_var always_update remote_output query_output
	global delay_sleep extra_sleep extra_sleep_split
	global query_result_list

	set debug [in_debug_mode]

	set getout 0
	set print_getout 0;

	set do_query_all 0

	set newnew ""
	if {$item == "disconnect"} {
		set newnew "N/A"
		set do_query_all 1
	} elseif {$always_update} {
		set do_query_all 1
	}

	if {$item == "remote-cmd"} {
		# kludge for arbitrary remote command:
		if {[regexp {^Q:} $new]} {
			# extra kludge for Q:var to mean -Q var
			regsub {^Q:} $new "" new
			set qonly 1
		} else {
			set qonly 0
		}
		# need to extract item from new:
		set qtmp $new
		regsub {:.*$} $qtmp "" qtmp
		if {$qonly} {
			set rargs [list "-Q" "$qtmp"]
			set print_getout 1
			set qargs ""
		} else {
			set rargs [list "-R" "$new"]
			set qargs ""
		}
		set getout 1

	} elseif {[value_is_string $item]} {
		# string var:
		set rargs [list "-R" "$name:$new"]
		set qargs [list "-Q" "$name"]
	} else {
		# boolean var:
		set rargs [list "-R" "$name"]
		set qargs [list "-Q" "$name"]
	}

	if {! $query && ! $always_update} {
		set getout 1
	} elseif {$item == "noremote"} {
		set getout 1
	} elseif {[is_action $item] && ![opt_match Q $item] && $rargs != ""} {
		set getout 1
	} elseif {[regexp {^(sid|id)$} $item] && ![regexp {^0x} $new]} {
		set getout 1
	}

	set remote_output ""
	set query_output ""

	if {!$debug} {
		if [regexp {passwd} $rargs] {
			append_text "x11vnc ..."
		} else {
			append_text "x11vnc $rargs ..."
		}
	}

	if {$getout} {
		set remote_output [run_remote_cmd $rargs]
		if {$print_getout} {
			append_text "\t$remote_output"
		}
		append_text "\n"
		return
	}

	if {$do_query_all} {
		set all [all_query_vars]
		set qargs [list "-Q" $all]

		global last_query_all_time
		set last_query_all_time [clock seconds]
	}

	set rqargs [concat $rargs $qargs]

	set query [run_remote_cmd $rqargs]
	set query_output $query

	set query_result_list ""

	if {$newnew != ""} {
		set new $newnew
	}

	if {![see_if_ok $query $item "$name:$new"]} {
		# failed
		if  {[regexp {^a..=} $query]} {
			# but some result came back
			# synchronize everything with a 2nd call.
			set query_output [query_all 1]
		} else {
			# server may be dead
			if {$item != "ping" && $item != "attach"} {
				try_connect
			}
		}
	} else {
		# succeeded
		# synchronize this variable (or variables)
		# for a speedup used the list parsed by see_if_ok.
		update_menu_vars "USE_LIST"

		if {$do_query_all} {
			global all_settings
			set all_settings $query
		}
	}
}

proc set_kmb_str {} {
	global vl_bk vl_bm vl_bb vr_bk vr_bm vr_bb 

	set str ""
	if {$vl_bk} {
		append str "K"
	}
	if {$vl_bm} {
		append str "M"
	}
	if {$vl_bb} {
		append str "B"
	}
	if {$vr_bk || $vr_bm || $vr_bb} {
		append str ","
	}
	if {$vr_bk} {
		append str "K"
	}
	if {$vr_bm} {
		append str "M"
	}
	if {$vr_bb} {
		append str "B"
	}
	entry_insert $str
}

proc insert_input_window {} {
	global text_area cleanup_window
	global ffont menu_var
	global vl_bk vl_bm vl_bb vr_bk vr_bm vr_bb 

	append_text "\nUse these checkboxes to set the input permissions, "
	append_text "or type in the \"KMB...\"\n"
	append_text "-input string manually.  Then press \"OK\" or \"Cancel\".\n"
	append_text "(note: an empty setting means use the default behavior, "
	append_text "see viewonly)\n\n"
	set w "$text_area.wk_f"
	catch {destroy $w}
	frame $w -bd 1 -relief ridge -cursor {top_left_arrow}
	set fl $w.fl
	frame $fl
	set fr $w.fr
	frame $fr
	label $fl.l -font $ffont -text "Normal clients:   "
	checkbutton $fl.bk -pady 1 -font $ffont -anchor w -variable vl_bk \
		-pady 1 -command set_kmb_str -text "Keystrokes" 
	checkbutton $fl.bm -font $ffont -anchor w -variable vl_bm \
		-pady 1 -command set_kmb_str -text "Mouse Motion" 
	checkbutton $fl.bb -font $ffont -anchor w -variable vl_bb \
		-pady 1 -command set_kmb_str -text "Button Clicks"
	label $fr.l -pady 1 -font $ffont -text "View-Only clients:"
	checkbutton $fr.bk -font $ffont -anchor w -variable vr_bk \
		-pady 1 -command set_kmb_str -text "Keystrokes" 
	checkbutton $fr.bm -font $ffont -anchor w -variable vr_bm \
		-pady 1 -command set_kmb_str -text "Mouse Motion" 
	checkbutton $fr.bb -font $ffont -anchor w -variable vr_bb \
		-pady 1 -command set_kmb_str -text "Button Clicks"

	if {[info exists menu_var(input)]} {
		set input_str $menu_var(input)
	} else {
		set input_str ""
	}

	if {[regexp {(.*),(.*)} $input_str match normal viewonly]} {
		;
	} else {
		set normal $input_str
		set viewonly ""
	}
	set vl_bk 0
	set vl_bm 0
	set vl_bb 0
	set vr_bk 0
	set vr_bm 0
	set vr_bb 0

	if {[regexp -nocase {K} $normal]} {
		set vl_bk 1
	}
	if {[regexp -nocase {M} $normal]} {
		set vl_bm 1
	}
	if {[regexp -nocase {B} $normal]} {
		set vl_bb 1
	}
	if {[regexp -nocase {K} $viewonly]} {
		set vr_bk 1
	}
	if {[regexp -nocase {M} $viewonly]} {
		set vr_bm 1
	}
	if {[regexp -nocase {B} $viewonly]} {
		set vr_bb 1
	}

	pack $fl.l $fl.bk $fl.bm $fl.bb -side top -fill x
	pack $fr.l $fr.bk $fr.bm $fr.bb -side top -fill x
	pack $fl $fr -side left
	update
	update idletasks
	$text_area window create end -window $w
	$text_area see end
	$text_area insert end "\n"
#	$text_area insert end "\n\n\n\n\n\n\n\n\n"

	set cleanup_window $w
}

proc set_ca_str {w} {
	global ca_bk ca_bm ca_bb ca_bk ca_di

	if {$ca_di} {
		entry_insert "disconnect"
		$w.bk configure -state disabled
		$w.bm configure -state disabled
		$w.bb configure -state disabled
		return
	}

	$w.bk configure -state normal
	$w.bm configure -state normal
	$w.bb configure -state normal

	set str ""
	if {$ca_bk} {
		append str "K"
	}
	if {$ca_bm} {
		append str "M"
	}
	if {$ca_bb} {
		append str "B"
	}
	entry_insert $str
}

proc insert_client_action_window {input} {
	global text_area cleanup_window
	global ffont menu_var
	global ca_bk ca_bm ca_bb ca_bk ca_di

	append_text "\nUse these checkboxes to set the input permissions "
	append_text "for this client\n-OR- whether to disconnect it instead.  "
	append_text "Then press \"OK\" or \"Cancel\".\n\n"
	set w "$text_area.ca_f"
	catch {destroy $w}
	frame $w -bd 1 -relief ridge -cursor {top_left_arrow}
	checkbutton $w.di -pady 1 -font $ffont -anchor w -variable ca_di \
		-pady 1 -command "set_ca_str $w" -text "Disconnect    " 
	checkbutton $w.bk -font $ffont -anchor w -variable ca_bk \
		-pady 1 -command "set_ca_str $w" -text "Keystrokes" 
	checkbutton $w.bm -font $ffont -anchor w -variable ca_bm \
		-pady 1 -command "set_ca_str $w" -text "Mouse Motion" 
	checkbutton $w.bb -font $ffont -anchor w -variable ca_bb \
		-pady 1 -command "set_ca_str $w" -text "Button Clicks"

	set ca_di 0
	set ca_bk 0
	set ca_bm 0
	set ca_bb 0

	if {[regexp -nocase {K} $input]} {
		set ca_bk 1
	}
	if {[regexp -nocase {M} $input]} {
		set ca_bm 1
	}
	if {[regexp -nocase {B} $input]} {
		set ca_bb 1
	}

	pack $w.di $w.bk $w.bm $w.bb -side left
	update
	update idletasks
	$text_area window create end -window $w
	$text_area see end
	$text_area insert end "\n"

	set cleanup_window $w
}

proc cleanup_text_window {} {
	global cleanup_window
	if {[info exists cleanup_window]} {
		catch {destroy $cleanup_window}
	}
}

# For updating a string variable.   Also used for simple OK/Cancel dialogs
# with entry = 0.
proc entry_dialog {item {entry 1}} {
	global menu_var entry_str entry_set entry_dialog_item
	global unset_str connected_to_x11vnc entry_box

	set entry_str "Set $item"
	set entry_set 0
	set entry_dialog_item $item

	entry_enable
	menus_disable

	if {$item == "passwd" || $item == "viewpasswd"} {
		$entry_box configure -show "*"
	}

	if {$entry} {
		entry_insert ""
		if {[info exists menu_var($item)] &&
		    $menu_var($item) != $unset_str} {
			entry_insert $menu_var($item)
			entry_select
		}

		if {[is_browse $item]} {
			entry_browse_button
		}
		set_info "Set parameter in entry box, "
		entry_focus
	} else {
		entry_disable box
	}

	set clean_text_window 0;

	if {$item == "input"} {
		insert_input_window
		set clean_text_window 1
	}

	update

	# wait for user reply:
	vwait entry_set

	set rc $entry_set
	set entry_set 0

	set value [entry_get]
	update

	entry_browse_button 0
	set entry_str "Set... :"

	entry_delete
	entry_disable
	menus_enable

	if {$clean_text_window} {
		cleanup_text_window;
	}

	update

	if {! $entry} {
		;
	} elseif {$rc} {
		set menu_var($item) $value
	} else {
		if {[in_debug_mode]} {
			append_text "skipped setting $item\n"
		}
	}

	$entry_box configure -show ""

	return $rc
}

proc warning_dialog {msg {item "gui"} } {
	append_text $msg
	# just reuse the entry widgets for a yes/no dialog
	return [entry_dialog $item 0]
}

# For updating a boolean toggle:
proc check_var {item} {
	global menu_var

	set inval $menu_var($item);

	if {$item == "debug_gui"} {
		return "";
	}

	set rname $item
	if {! $inval} {
		if {[regexp {^no} $item]} {
			regsub {^no} $rname "" rname
		} else {
			set rname "no$rname"
		}
	}
	return $rname
}

proc see_if_ok {query item expected} {
	global query_result_list

	set ok 0
	set found ""

	set query_result_list [split_query $query]

	foreach q $query_result_list {
		# XXX following will crash if $item is not a good regexp
		# need to protect it \Q$item\E style...
#		if {[regexp "^$item:" $q]} {
#			set found $q
#		}
		if {[string first "$item:" $q] == 0} {
			set found $q
		}
		if {$q == $expected} {
			set ok 1
			if {$found != ""} {
				break;
			}
		}
	}
	if {$found == ""} {
		set msg $query
		regsub {^a..=} $msg {} msg
		if {[string length $msg] > 60} {
			set msg [string range $msg 0 60]
		}
	} else {
		set msg $found
	}
	if {!$ok && $found != ""} {
		# check for floating point match:
		set v1 ""
		set v2 ""
		regexp {:([0-9.][0-9.]*)$} $found m0 v1
		regexp {:([0-9.][0-9.]*)$} $expected m0 v2
		if {$v1 != "" && $v2 != ""} {
			set diff ""
			catch {set diff [expr "$v1 - $v2"]}
			if {$diff != ""} {
				if {$diff < 0} {
					set diff [expr "0.0 - $diff"]
				}
				if {$diff < 0.00001} {
					set ok 1
				}
			}
		}
	}
	if {$ok} {
		append_text "\tSet OK  ($msg)\n"
		return 1

	} elseif {[opt_match P $item] && [regexp {:(-|\+)} $expected]} {
		# e.g. blackout:+30x30+20+20
		append_text "\t($msg)\n"
		return 1
	} elseif {[regexp {:[0-9]\.[0-9]} $expected]} {
		append_text "\t($msg)\n"
		return 1
	} elseif {$item == "connect" || $item == "disconnect"
	    || $item == "client" || $item == "client_input"} {
		append_text "\t($msg)\n"
		return 1
	} elseif {$item == "passwd" || $item == "viewpasswd"} {
		append_text "\t($msg)\n"
		return 1
	} else {
		append_text "\t*FAILED* $msg\n"
		return 0
	}
}

proc update_menu_vars {{query ""}} {
	global all_settings menu_var query_result_list

	set debug [in_debug_mode]

	if {$query == "USE_LIST"} {
		;
	} elseif {$query == ""} {
		set query_result_list [split_query $all_settings]
	} else {
		set query_result_list [split_query $query]
	}

	foreach piece $query_result_list {
#puts stderr "UMV: $piece"
		if {[regexp {^([^:][^:]*):(.*)$} $piece m0 item val]} {
			if {[info exists menu_var($item)]} {
				set old $menu_var($item)
#puts stderr "     $old"
				if {$val == "N/A"} {
					continue
				}
				set menu_var($item) $val
			}
			if {$item == "clients"} {
				update_clients_menu $val
			} elseif {$item == "display"} {
				set_x11_display $val
			} elseif {$item == "vncdisplay"} {
				set_vnc_display $val
			} elseif {$item == "http_url"} {
				set_vnc_url $val
			}
		}
	}
}

proc clear_all {} {
	global menu_var unset_str

	set debug [in_debug_mode]
	
	foreach item [array names menu_var] {
		if {$item == "debug_gui"} {
			continue
		}
		if {[info exists menu_var($item)]} {
			if {[is_action $item]} {
				set menu_var($item) ""
			} elseif {[value_is_bool $item]} {
				set menu_var($item) 0
			} elseif {[value_is_string $item]} {
				set menu_var($item) $unset_str
			}
		}
	}
	append_text "Cleared all settings.\n"
}

proc all_query_vars {} {
	global query_ans_list query_aro_list all_settings
	global cache_all_query_vars
	
	if {$cache_all_query_vars != ""} {
		return $cache_all_query_vars
	}

	set qry ""
	foreach item $query_ans_list {
		if {$qry == ""} {
			set qry $item
		} else {
			append qry ",$item"
		}
	}
	foreach item $query_aro_list {
		if {$qry == ""} {
			set qry $item
		} else {
			append qry ",$item"
		}
	}
	set cache_all_query_vars $qry

	return $qry
}

proc query_all {{quiet 0}} {
	global query_ans_list query_aro_list all_settings
	global last_query_all_time

	set qry [all_query_vars]

	set qargs [list "-Q" $qry]
	set all [run_remote_cmd $qargs]

	if {[regexp {ans=} $all]} {
		if {! $quiet} {
			append_text "Retrieved all settings.\n"
		}
		set all_settings $all
		update_menu_vars $all
	} else {
		if {! $quiet} {
			append_text "Failed to retrieve settings.\n"
		}
	}
	set last_query_all_time [clock seconds]
	return $all
}

proc set_info {str} {
	global info_str info_label
#set w1 [$info_label cget -width]
#set w2 [winfo width $info_label]
#puts "set_info: w=$w1  winfo=$w2"
#append_text "$str\n"
	set info_str "$str"
	update
}

proc append_text {str} {
	global text_area text_area_str

	if {![info exists text_area_str]} {
		set text_area_str ""
	}
	append text_area_str $str

	if {![info exists text_area]} {
		puts stderr $str
		return
	}
	if {$text_area == ""} {
		puts stderr $str
		return
	}
	if {![winfo exists $text_area]} {
		puts stderr $str
		return
	}
	
	$text_area insert end $str
	$text_area see end
}

proc show_all_settings {} {
	global all_settings
	set txt "\nRead-Write setting:\n\n"
	foreach item [split_query $all_settings]  {
		regsub {:} $item {: } item
		append txt "  $item\n"
		if {[regexp {noremote} $item]} {
			append txt "\nRead-Only setting:\n\n"
		}
	}
	textwin "Settings" "All Current Settings" $txt
}

proc show_logfile {} {
	global menu_var unset_str
	set logfile $menu_var(logfile)
	
	if {$logfile == "" || $logfile == $unset_str} {
		set txt "\nNo logfile has been specified.\n\n"	
	} elseif {![file exists $logfile]} {
		set txt "\nLogfile \"$logfile\" does not exist.\n\n"
	} else {
		set fh "-3"
		set err ""
		catch {set fh [open $logfile "r"]} err
		if {$fh == "-3"} {
			set txt "\nError opening \"$logfile\" $err.\n\n"
		} else {
			set txt "\nLogfile \"$logfile\" current contents:\n"
			while {[gets $fh line] > -1} {
				append txt "$line\n"
			}
			close $fh
		}
	}
	textwin "Logfile" "Logfile" $txt
}

proc tail_logfile {} {
	global menu_var unset_str ffont
	set logfile $menu_var(logfile)
	
	set txt ""
	if {$logfile == "" || $logfile == $unset_str} {
		set txt "\nNo logfile has been specified.\n\n"	
	} elseif {![file exists $logfile]} {
		set txt "\nLogfile \"$logfile\" does not exist.\n\n"
	} else {
		set cmd ""
		set xterm_cmd "xterm -sb -fn $ffont -geometry 80x45 -title x11vnc-logfile -e"
		set cmd [split $xterm_cmd]
		lappend cmd "tail"
		lappend cmd "-3000f"
		lappend cmd $logfile
		lappend cmd "&"
		catch {[eval exec $cmd]}
	}
	if {$txt != ""} {
		textwin "Logfile" "Logfile" $txt
	}
}

proc set_connected {yesno} {
	global connected_to_x11vnc
	set orig $connected_to_x11vnc
	
	if {$yesno == "yes"} {
		set connected_to_x11vnc 1
	} else {
		set connected_to_x11vnc 0
		no_x11_display
		no_vnc_display
	}
	if {$orig != $connected_to_x11vnc} {
		set_widgets
	}
}

proc detach_from_display {} {
	global connected_to_x11vnc reply_xdisplay x11vnc_xdisplay
	set str "Detaching from X display."
	if {$reply_xdisplay != ""} {
		set str "Detaching from $reply_xdisplay."
	} elseif {$x11vnc_xdisplay != ""} {
		set str "Detaching from $x11vnc_xdisplay."
	}
	if {$connected_to_x11vnc} {
		append_text "$str\n"
	}
	set_connected no
}

proc do_stop_quit {} {
	push_new_value "stop" "stop" 1 0
	set_connected no
	update
	after 250
	destroy .
}

# Menu item is an action:
proc do_action {item} {
	global menu_var connected_to_x11vnc beginner_mode

	if {[in_debug_mode]} {
		append_text "action: \"$item\"\n"
	}
#puts "action: \"$item\"\n"

	if {$item == "ping"} {
		if {$beginner_mode} {
			try_connect_and_query_all
		} else {
			try_connect
		}
		return
	} elseif {$item == "start"} {
		start_x11vnc
		return
	} elseif {$item == "detach"} {
		detach_from_display
		return
	} elseif {$item == "attach"} {
		try_connect_and_query_all
		return
	} elseif {$item == "update-all"} {
		query_all
		return
	} elseif {$item == "clear-all"} {
		clear_all
		return
	} elseif {$item == "show-start-cmd"} {
		show_start_cmd
		return
	} elseif {$item == "all-settings"} {
		show_all_settings
		return
	} elseif {$item == "show-logfile"} {
		show_logfile
		return
	} elseif {$item == "tail-logfile"} {
		tail_logfile
		return
	} elseif {$item == "Misc-Tuning:"} {
		menu_help "$item"
		return
	} elseif {$item == "WindowView"} {
		change_view_state
		return
	} elseif {$item == "stop+quit"} {
		do_stop_quit
	}

	if {[value_is_string $item]} {
		if {! [entry_dialog $item]} {
			return
		}
		set new $menu_var($item)
		set name $item
	} else {
		set new 1
		set name $item
	}

	if {! $connected_to_x11vnc} {
		;
	} elseif {[regexp {^(stop|quit|exit|shutdown)$} $item]} {
		# just do -R
		append_text "stopping remote x11vnc server...\n"
		push_new_value $item $name $new 0
		set_connected no
		
	} elseif {[opt_match Q $item]} {
		push_new_value $item $name $new 1
	} else {
		push_new_value $item $name $new 0
	}
}

proc ptime {time} {
	set usec [lindex [split $time] 0]
	set sec [format "%.3f" [expr "$usec / 1000000.0"]]
	puts "time: $sec secs."
}

proc do_var {item} {
	global connected_to_x11vnc item_cascade menu_var

	set debug [in_debug_mode]

	set string 0
	if {[is_action $item] || $item == "WindowView"} {
		# Menu item is action:
		if {$debug} {
			ptime [time {do_action $item}]
		} else {
			do_action $item
		}
		return
	}


	if {[value_is_string $item]} {
		# Menu item is a string:
		if {$item_cascade($item) != ""} {
			# Cascade sets variable automatically
		} else {
			# Otherwise Entry box
			if {![entry_dialog $item]} {
				return
			}
		}
		set new $menu_var($item)
		set name $item
	} else {
		# Menu item is a boolean:
		set name [check_var $item]
		if {$name == ""} {
			return
		}
		set new 1
	}
	if {$connected_to_x11vnc} {
		if {$debug} {
			ptime [time {push_new_value $item $name $new 1}]
		} else {
			push_new_value $item $name $new 1
		}

		if {$item == "http"} {
			global vnc_url
			append_text "  URL: $vnc_url\n"
		}
	}
}

proc menu_help {item} {
	if ![help_win $item] {
		textwin "nohelp" "No help available" \
			"Sorry, no help avaiable for \"$item\""
	}
}

proc opt_match {c item} {
	global item_opts
	if {[info exists item_opts($item)]} {
		if {[regexp "^\[A-z\]*$c" $item_opts($item)]} {
			return 1
		}
	}
	return 0
}

proc is_action {item} {
	return [opt_match A $item]
}

proc is_gui_internal {item} {
	if {$item == "Properties"} {
		return 1
	}
	if {$item == "Tray"} {
		return 1
	}
	return [opt_match G $item]
}

proc is_browse {item} {
	return [opt_match F $item]
}

proc value_is_string {item} {
	global item_bool
	if {! $item_bool($item)} {
		return 1
	} else {
		return 0
	}
}

proc value_is_bool {item} {
	global item_bool
	if {$item_bool($item)} {
		return 1
	} else {
		return 0
	}
}

proc split_query0 {query} {
	# original slower way with regexp/regsub
	regsub -all {aro=} $query {ans=} query
	set items {}
	while {1} {
		if {! [regexp {^ans=(.*)$} $query m0 m1]} {
			break
		}
		set item $m1
		set m2 ""
		regexp {,ans=.*$} $item m2
		regsub {,ans=.*$} $item "" item
		if {$item != ""} {
			lappend items $item
		}
		set query $m2
		regsub {^,} $query "" query
	}
	return $items
}

proc split_query {query} {
	regsub -all {aro=} $query {ans=} query
	set items {}
	while {1} {
		set n [string first "ans=" $query]
		if {$n < 0} {
			break
		}
		set from [expr $n+4]

		set m [string first ",ans=" $query]
		if {$m < 0} {
			set more 0
			set item [string range $query $from end]
		} else {
			set more 1
			set to   [expr $m-1]
			set item [string range $query $from $to]
		}
		if {$item != ""} {
			lappend items $item
		}
		if {$more} {
			incr m
			set query [string range $query $m end]
		} else {
			set query ""
		}
	}
	return $items
}

proc set_x11_display {name} {
	global x11_display
	set x11_display "x11vnc X display: $name"
	set_name "tkx11vnc - $name"
}
proc set_vnc_display {name} {
	global vnc_display icon_mode
	set vnc_display "VNC display: $name"

	if {$icon_mode} {
		set_icon_label
	}
}
proc set_vnc_url {name} {
	global vnc_url
	set vnc_url $name
}
proc no_x11_display {} {
	set_x11_display "(*none*)"
	set_name "tkx11vnc"
}
proc no_vnc_display {} {
	set_vnc_display "(*none*)"
}
proc no_vnc_url {} {
	set_vnc_url "(*none*)"
}

proc get_vnc_display_number {} {
	global vnc_display
	if ![info exists vnc_display] {
		return "none"
	}
	if {$vnc_display == ""} {
		return "none"
	}
	set str $vnc_display
	regsub {VNC display: *} $str "" str
	if [regexp {:([0-9][0-9]*)} $str m0 n] {
		return $n
	}
	return "none"
}

proc fetch_displays {} {

	set qargs [list "-Q" "display,vncdisplay"]
	set result [run_remote_cmd $qargs]

	set got_x11 0
	set got_vnc 0
	set got_url 0

	foreach item [split_query $result] {
		if {[regexp {^display:(.*)$} $item m0 m1]} {
			set_x11_display $m1
			set got_x11 1
		} elseif {[regexp {^vncdisplay:(.*)$} $item m0 m1]} {
			set_vnc_display $m1
			set got_vnc 1
		} elseif {[regexp {^http_url:(.*)$} $item m0 m1]} {
			set_vnc_url $m1
			set got_url 1
		}
	}
	if {! $got_x11} {
		no_x11_display
	}
	if {! $got_vnc} {
		no_vnc_display
	}
	if {! $got_url} {
		no_vnc_url
	}
}

proc client_dialog {client} {
	set cid ""
	set host ""
	set ip ""
	global menu_var text_area cleanup_window item_bool

	append_text "\nClient info string:  $client\n\n"
	if {[regexp {^(.*):(.*):(.*):(.*):(.*):(.*):(.*)$} \
	    $client m0 m1 m2 m3 m4 m5 m6 m7]} {
		# id:ip:port:user:hostname:input:loginvo
		set cid $m1
		set ip $m2
		set port $m3
		set user $m4
		set host $m5
		regsub {\..*$} $host "" host
		set input $m6
		set logvo $m7
		append_text "Host: $host, Port: $port, User: $user, IP: $ip, Id: $cid\n"
		append_text "    - originally logged in as:  "
		if {$logvo == "1" } {
			append_text "View-Only Client\n"
		} else {
			append_text "Normal Client\n"
		}
		append_text "    - currently allowed input:  "
		set sk 0
		set sm 0
		set sb 0
		if {[regexp -nocase {K} $input]} {
			append_text "Keystrokes"
			set sk 1
		}
		if {[regexp -nocase {M} $input]} {
			if {$sk} {
				append_text ", "
			}
			append_text "Mouse-Motion"
			set sm 1
		}
		if {[regexp -nocase {B} $input]} {
			if {$sk || $sm} {
				append_text ", "
			}
			append_text "Button-Clicks"
			set sb 1
		}
		if {! $sk && ! $sm && ! $sb} {
			append_text "None"
		}
		append_text "\n"
	}
	if {$cid == ""} {
		append_text "Invalid client info string: $client\n"
		return
	}

	regsub -all {_} $input "" input
	set menu_var(client) "$input"
	set item_bool(client) 0

	insert_client_action_window $input
	set rc [entry_dialog client 1]

	cleanup_text_window

	set val $menu_var(client)
	#puts "rc: $rc  val: $val"

	if {! $rc} {
		return;
	} elseif {[regexp -nocase {(disconnect|close)} $val]} {
		disconnect_dialog $client
	} else {
		regsub -all -nocase {[^KMB]} $val "" val
		set item_bool(client_input) 0
		push_new_value "client_input" "client_input" "$cid:$val" 0
	}
}

proc disconnect_dialog {client} {
	set cid ""
	set host ""
	set msg "\n"
	append msg "*** Client info string: $client\n"
	if {[regexp {^(.*):(.*):(.*):(.*):(.*):(.*)$} $client m0 m1 m2 m3 m4 m5 m6]} {
		set cid $m1
		set ip $m2
		set port $m3
		set host $m4
		regsub {\..*$} $host "" host
		set input $m5
		set logvo $m6
		append_text "Host: $host, Port: $port, IP: $ip, Id: $cid\n"
	}
	if {$cid == ""} {
		append_text "Invalid client info string: $client\n"
		return
	}
	append msg "*** To *DISCONNECT* this client press \"OK\", otherwise press \"Cancel\"\n"
	bell
	if {[warning_dialog $msg "current"]} {
		push_new_value "disconnect" "disconnect" $cid 1
	} else {
		append_text "disconnect cancelled.\n"
	}
}

proc update_clients_and_repost {} {
	global item_cascade menu_m menu_b

	append_text "Refreshing connected clients list... "
	query_all 1
	update

	set saw 0
	set casc $item_cascade(current)
	set last [$casc index end]
	for {set i 0} {$i <= $last} {incr i} {
		if {[$casc type $i] == "separator"} {
			continue
		}
		set name [$casc entrycget $i -label]
		if {[regexp {^num-clients} $name]} {
			continue
		}
		if {[regexp {^refresh-list} $name]} {
			continue
		}
		if {! $saw} {
			append_text "\n"
		}
		set saw 1
		append_text "client: $name\n"
	}
	if {! $saw} {
		append_text "done.\n"
	}
}

proc update_clients_menu {list} {
	global item_cascade ffont
	global saved_clients_str

	if {![info exists saved_clients_str]} {
		set saved_clients_str ""
	}
	if {$list == "INIT"} {
		set list $saved_clients_str
	} else {
		set saved_clients_str $list
	}

	set subm $item_cascade(current);
	catch {destroy $subm}
	menu $subm -tearoff 0 -font $ffont
	$subm add command
	$subm add command -label "refresh-list" \
		-command "update_clients_and_repost"
	$subm add separator
	set count 0
	foreach client [split $list ","] {
		if {![regexp {^[a-z0-9]*[a-z0-9]:} $client]} {
			append_text "Skipping client line: "
			append_text $client
			append_text "\n"
			continue
		}
		regsub -all {[{}()~!$&*|;'"`{}<>\[\]]} $client "" client
		#'
		if {[regexp {^(.*):(.*):(.*):(.*):(.*):(.*):(.*)$} \
		    $client m0 m1 m2 m3 m4 m5 m6 m7]} {
			# id:ip:port:user:hostname:input:loginvo
			set host $m5
			regsub {\..*$} $host "" host
			set clabel "$host $m1"
		} else {
			regsub {:.*$} $client "" clabel
		}
		$subm add command -label "$clabel" \
			-command "client_dialog \{$client\}"
		incr count
	}
	$subm entryconfigure 0 -label "num-clients: $count"
}

proc set_widgets {} {
	global connected_to_x11vnc item_case item_menu item_entry menu_m

	foreach item [array names item_case] {
		set case $item_case($item)
#		set menu $menu_m($case)
		set menu $item_menu($item)
		set entry $item_entry($item)
		if {$entry < 0} {
			# skip case under beginner_mode 
			continue
		}
		set type [$menu type $entry]
		if {$type == "separator" || $type == "tearoff"} {
			continue
		}
		if {![winfo exists $menu]} {
			continue
		}
		if {$connected_to_x11vnc} {
			if {[active_when_connected $item]} {
				$menu entryconfigure $entry -state normal
			} else {
				$menu entryconfigure $entry -state disabled
			}
		} else {
			if {[active_when_starting $item]} {
				$menu entryconfigure $entry -state normal
			} else {
				$menu entryconfigure $entry -state disabled
			}
		}
	}
}

proc toggle_simple_gui {} {
	global beginner_mode simple_gui_created
	global connected_to_x11vnc make_gui_count

	if {$beginner_mode} {
		append_text "\nSwitching to simple-gui mode.\n"
	} else {
		append_text "\nSwitching to power-user gui mode.\n"
	}

	if {$make_gui_count == 1} {
		incr make_gui_count
	}
	set simple_gui_created 1
	make_menu_items
	set_widgets
	set_internal_help
#	if {$connected_to_x11vnc} {
#		query_all
#	}
	append_text "\n"
}

proc little_qs {m} {
	global bfont ffont beginner_mode
	global helpremote helptext helplabel
	global tk_version

	if {$tk_version < 8.0} {
		return
	}

	set n [$m index end]

	for {set i 0} {$i <= $n} {incr i} {
		set type [$m type $i]
#puts "$m - $i - $type"
		if {$type == "separator"} {
			$m add separator
		} elseif {$type == "tearoff"} {
			continue;
		} else {
			set label [$m entrycget $i -label]
			set str ""
			if {[info exists helpremote($label)]} {
				set str "(?)"
			} elseif {[info exists helptext($label)]} {
				set str "(?)"
			}
			$m add command -label $str \
				-font $ffont \
				-command "menu_help $label";

			if {$str == ""} {
				$m entryconfigure end -state disabled
			}
			set arg "$m,$i"
#puts "helplabel: $arg -> $label"
			set helplabel($arg) $label
			set j [$m index end]
			set arg "$m,$j"
			set helplabel($arg) $label
		}
		if {$i == 0} {
			$m entryconfigure end -columnbreak 1
		}
	}

	menu_bindings $m
}

proc make_menu_items {} {
	global template 
	global menu_b menu_m menu_count
	global item_opts item_bool item_case item_menu item_entry menu_var unset_str
	global item_cascade
	global bfont ffont beginner_mode simple_gui_created
	global helptext helpremote helplabel

	# some tweaks...
	if {![info exists menu_var(deny)]} {
		set menu_var(deny) 0
	}

	set case "";
	set L_casc ""
	set L_casc_count 0
	set L_menus [list]

	# Extract the menu items:
	foreach line [split $template "\n"] {
		if {[regexp {^Row:} $line]} {
			continue
		}
		if {[regexp {^[A-z]} $line]} {
			set case [string trim $line]

			if {$simple_gui_created} {
				set i0 0
				#if {$case == "Misc"} { # kludge for simple_gui
				#	set i0 1
				#}
				catch {$menu_m($case) delete $i0 end}
			}
			set menu_count($case) 0
			continue;
		}

		set item [string trim $line]
		regsub -all {  *} $item " " item
		if {$item == ""} {
			continue;
		}
		set opts ""
		if {[regexp {^=} $item]} {
			set opts [lindex [split $item] 0]
			regsub {^=} $opts "" opts
			set item [lindex [split $item] 1]
		}
		if {[regexp {^0} $opts]} {
			continue;
		}
		if {[regexp {:$} $item]} {
			set bool 0
		} else {
			set bool 1
		}
		regsub {:$} $item {} item

		if {$item == "LOFF"} {
			set L_casc ""
			continue
		}

		if {$item == "-- D"} {
			set beginner_sep 1
			set item "--"
		} else {
			set beginner_sep 0
		}

		set item_opts($item) $opts
		set item_case($item) $case
		set item_bool($item) $bool
		set item_cascade($item) ""

		if {$L_casc == ""} {
			set item_entry($item) $menu_count($case)
			set m $menu_m($case)
		} else {
			# hack for cascades for crowded menus.  See =GAL opts.
			set item_entry($item) $L_casc_count
			set m $L_casc
		}

		set mvar 0 

		if {$beginner_mode && ! $beginner_sep && ![opt_match D $item]} {
			set item_entry($item) "-1"
			continue;
		}

		set item_menu($item) $m

		if {0} { puts "ITEM: $item\t- $opts\t- $case\t- \
			$bool\t- $menu_count($case)" }

		# Create the menu items, its variables, etc., etc.

		if {$item == "--"} {
			$m add separator

		} elseif {$item == "Quit"} {
			# Quit item must shut us down:
			$m add command -label "$item" -underline 0 \
				-font $ffont \
				-command {destroy .; exit 0}

		} elseif {$case == "Help"} {
			# Help is simple help:
			$m add command -label "$item" \
				-font $ffont \
				-command "menu_help $item"

		} elseif {[opt_match L $item]} {
			# Special sub-menu cascade (=GAL ends with LOFF)
			set subm $m.casc_L$menu_count($case)
			catch {destroy $subm}
			menu $subm -tearoff 0 -font $ffont
			set item_cascade($item) $subm
			$m add cascade -label "$item" \
				-font $ffont \
				-menu $subm
			set L_casc $subm
			set L_casc_count -1
			lappend L_menus $L_casc

		} elseif {$item == "current"} {
			# Current clients cascade
			set subm $m.current_cascade
			catch {destroy $subm}
			set item_cascade($item) $subm
			update_clients_menu "INIT"
			$m add cascade -label "$item" \
				-font $ffont \
				-menu $subm

		} elseif {[is_action $item]} {
			# Action
			$m add command -label "$item" \
				-font $ffont \
				-command "do_var $item"
			if {![info exists menu_var($item)]} {
				set menu_var($item) "";	# for convenience
			}

		} elseif {! $item_bool($item)} {
			# String
			if {[regexp -- {-C:(.*)} $item_opts($item) m0 m1]} {
				# Radiobutton select
				set subm $m.radio_cascade$menu_count($case)
				catch {destroy $subm}
				menu $subm -tearoff 0 -font $ffont
				foreach val [split $m1 ","] {
					$subm add radiobutton -label "$val" \
						-command "do_var $item" \
						-value "$val" \
						-font $ffont \
						-variable menu_var($item)
				}
				$m add cascade -label "$item" \
					-font $ffont \
					-menu $subm
				set item_cascade($item) $subm
			} else {
				# Arbitrary_string
				$m add command -label "$item" \
					-font $ffont \
					-command "do_var $item"
			}
			set mvar 1

		} elseif {$item == "simple-gui"} {
			$m add checkbutton -label "$item" \
				-command "toggle_simple_gui" \
				-font $ffont \
				-variable beginner_mode
		} else {
			# Boolean
			$m add checkbutton -label "$item" \
				-command "do_var $item" \
				-font $ffont \
				-variable menu_var($item)
			if {![info exists menu_var($item)]} {
				set menu_var($item) 0
			}
		}

		if {$L_casc_count == -1} {
			incr menu_count($case)
			incr L_casc_count
		} elseif {$L_casc != ""} {
			incr L_casc_count
		} else {
			incr menu_count($case)
		}

		if {$mvar} {
			if {![info exists menu_var($item)]} {
				set menu_var($item) $unset_str
			}
		}
	}

	# Now make the little "(?)" help buttons
	foreach case [array names menu_m] {
		if {$case == "Help"} {
			continue;
		}
		little_qs $menu_m($case);
	}
	foreach m $L_menus {
		little_qs $m
	}
}

proc menu_posted {} {
	global last_query_all_time query_all_freq icon_mode
	global connected_to_x11vnc client_tail

	set now [clock seconds]

	if {$icon_mode && $client_tail != ""} {
		set delay [expr 2 * $query_all_freq]
	} else {
		set delay $query_all_freq
	}

	if {$connected_to_x11vnc} {
		set quiet 0
		set refresh [expr "$last_query_all_time + $delay"]

		# puts "menu_posted $now $last_query_all_time"
		# puts "menu_posted $refresh"

		if {$now > $refresh} {
			append_text "Refreshing settings... "
			query_all $quiet
			if {$quiet} {
				append_text "done\n"
			}
		}
	}
}

proc props_widgets {state} {
	global props_buttons
	foreach w $props_buttons {
		$w configure -state $state	
	}
	update
}

proc props_apply {} {
	global props_accept props_confirm props_viewonly props_shared
	global props_passwd props_viewpasswd
	global prop0_accept prop0_confirm prop0_viewonly prop0_shared
	global prop0_passwd prop0_viewpasswd
	global menu_var

	props_widgets disabled

	if {$props_accept != $prop0_accept} {
		if {$props_accept} {
			push_new_value "unlock" "unlock" 1 0
		} else {
			push_new_value "lock" "lock" 1 0
		}
		set prop0_accept $props_accept
		after 500
	}

	if {$props_confirm != $prop0_confirm} {
		if {$props_confirm} {
			push_new_value "accept" "accept" "popup" 1
		} else {
			push_new_value "accept" "accept" "" 1
		}
		if {$menu_var(accept) == "popup"} {
			set props_confirm 1
		} elseif {$menu_var(accept) == ""} {
			set props_confirm 0
		}
		set prop0_confirm $props_confirm
		after 500
	}

	if {$props_viewonly != $prop0_viewonly} {
		if {$props_viewonly} {
			push_new_value "viewonly" "viewonly" 1 1
		} else {
			push_new_value "viewonly" "noviewonly" 1 1
		}
		if {$menu_var(viewonly)} {
			set props_viewonly 1
		} else {
			set props_viewonly 0
		}
		set prop0_viewonly $props_viewonly
		after 500
	}

	if {$props_shared != $prop0_shared} {
		if {$props_shared} {
			push_new_value "shared" "shared" 1 1
		} else {
			push_new_value "shared" "noshared" 1 1
		}
		if {$menu_var(shared)} {
			set props_shared 1
		} else {
			set props_shared 0
		}
		set prop0_shared $props_shared
		after 500
	}

	if {$props_passwd != $prop0_passwd} {
		push_new_value "passwd" "passwd" "$props_passwd" 0
		set prop0_passwd $props_passwd
		if {$props_passwd == ""} {
			set props_viewpasswd ""
		}
		after 500
	}

	if {$props_viewpasswd != $prop0_viewpasswd} {
		push_new_value "viewpasswd" "viewpasswd" "$props_viewpasswd" 0
		set prop0_viewpasswd $props_viewpasswd
		after 500
	}
	props_widgets normal
}

proc props_advanced {} {
	global icon_mode icon_win props_win full_win
	global props_advanced_first

	if ![info exists props_advanced_first] {
		center_win $full_win
		set props_advanced_first 1
		set first 1
	} else {
		set first 0
	}
	wm deiconify $full_win
	update

	if {$first} {
		set w $full_win
		wm minsize $w [winfo width $w] [winfo height $w]
	}
}

proc do_props {{msg ""}} {
	global props_accept props_confirm props_viewonly props_shared
	global props_passwd props_viewpasswd
	global prop0_accept prop0_confirm prop0_viewonly prop0_shared
	global prop0_passwd prop0_viewpasswd
	global menu_var unset_str
	global have_labelframes ffont bfont
	global props_buttons icon_noadvanced

	if [info exists menu_var(deny)] {
		if {$menu_var(deny) == $unset_str || $menu_var(deny) == 0} {
			set props_accept 1
		} else {
			set props_accept 0
		}
	} else {
		set menu_var(deny) 0
		set props_accept 1
	}
	set prop0_accept $props_accept

	if [info exists menu_var(accept)] {
		if {$menu_var(accept) == $unset_str || $menu_var(accept) == ""} {
			set props_confirm 0
		} else {
			set props_confirm 1
		}
	} else {
		set menu_var(accept) ""
		set props_confirm 0
	}
	set prop0_confirm $props_confirm

	if [info exists menu_var(viewonly)] {
		if {$menu_var(viewonly) == $unset_str || $menu_var(viewonly) == ""} {
			set props_viewonly 0
		} elseif ($menu_var(viewonly)) {
			set props_viewonly 1
		} else {
			set props_viewonly 0
		}
	} else {
		set menu_var(viewonly) 0
		set props_viewonly 0
	}
	set prop0_viewonly $props_viewonly

	if [info exists menu_var(shared)] {
		if {$menu_var(shared) == $unset_str || $menu_var(shared) == ""} {
			set props_shared 0
		} elseif ($menu_var(shared)) {
			set props_shared 1
		} else {
			set props_shared 0
		}
	} else {
		set menu_var(shared) 0
		set props_shared 0
	}
	set prop0_shared $props_shared

	if ![info exists props_passwd] {
		set props_passwd ""
	}
	set prop0_passwd $props_passwd

	if ![info exists props_viewpasswd] {
		set props_viewpasswd ""
	}
	set prop0_viewpasswd $props_viewpasswd

	if [info exists props_buttons] {
		catch {unset props_buttons}
	}
	set props_buttons [list]

	set w .props
	catch {destroy $w}
	toplevel $w
	wm title $w "x11vnc Properties"
	set b1 "$w.buttons1"
	frame $b1
	button $b1.ok -text OK -command "props_apply; destroy $w" -font $bfont
	button $b1.cancel -text Cancel -command "destroy $w" -font $bfont
	button $b1.apply  -text Apply -command "props_apply" -font $bfont

	pack $b1.apply $b1.cancel $b1.ok -side right -expand 1
	lappend props_buttons $b1.apply $b1.cancel $b1.ok

	set b2 "$w.buttons2"
	frame $b2

	button $b2.advanced -text "Advanced ..." \
		-command "destroy $w; props_advanced" -font $bfont
	if {! $icon_noadvanced} {
		lappend props_buttons $b2.advanced
		pack $b2.advanced -side right -expand 1
	}

	button $b2.help -text "Help ..." -command "menu_help Properties" -font $bfont
	lappend props_buttons $b2.help
	pack $b2.help -side right -expand 1

	set vp "$w.viewpw"
	if {$have_labelframes} {
		labelframe $vp -text "ViewOnly Password" -font $bfont
	} else {
		frame $vp
		set l $vp.l
		label $l -text "ViewOnly Password:" -justify left -anchor w -font $bfont
		pack $vp.l -fill x -expand 1 -padx 1m -pady 0m -side top
	}
	entry $vp.e -show "*" -textvariable props_viewpasswd -font $bfont
	pack $vp.e -fill x -expand 1 -padx 1m -pady 1m -side top

	lappend props_buttons $vp.e

	set pw "$w.passwd"
	if {$have_labelframes} {
		labelframe $pw -text "Password" -font $bfont
	} else {
		frame $pw
		set l $pw.l
		label $l -text "Password:" -justify left -anchor w -font $bfont
		pack $pw.l -fill x -expand 1 -padx 1m -pady 0m -side top
	}
	entry $pw.e -show "*" -textvariable props_passwd -font $bfont
	pack $pw.e -fill x -expand 1 -padx 1m -pady 1m -side top

	lappend props_buttons $pw.e

	set sh "$w.shared"
	frame $sh
	checkbutton $sh.button -text "Shared" \
		-variable props_shared -anchor w -font $bfont
	pack $sh.button -fill x -expand 1 -padx 1m -pady 1m

	set vo "$w.viewonly"
	frame $vo
	checkbutton $vo.button -text "All Clients ViewOnly" \
		-variable props_viewonly -anchor w -font $bfont
	pack $vo.button -fill x -expand 1 -padx 1m -pady 1m

	set cf "$w.confirm"
	frame $cf
	checkbutton $cf.button -text "Ask for Confirmation" \
		-variable props_confirm -anchor w -font $bfont
	pack $cf.button -fill x -expand 1 -padx 1m -pady 1m

	set ac "$w.accept"
	frame $ac
	checkbutton $ac.button -text "Accept Connections" \
		-variable props_accept -anchor w -font $bfont
	pack $ac.button -fill x -expand 1 -padx 1m -pady 1m

	set px "6m"
	pack $b1 -side bottom -fill x -pady 1m -padx $px
	pack $b2 -side bottom -fill x -pady 1m -padx $px
	pack $vp -side bottom -fill x -pady 1m -padx $px
	pack $pw -side bottom -fill x -pady 1m -padx $px
	pack $sh -side bottom -fill x -pady 0m -padx $px
	pack $vo -side bottom -fill x -pady 0m -padx $px
	pack $cf -side bottom -fill x -pady 0m -padx $px
	pack $ac -side bottom -fill x -pady 0m -padx $px

	if {$msg != ""} {
		set tw [textwidth $msg]
		set th [textheight $msg]
		set th [expr $th - 1]
		set ms "$w.msg"
		text $ms -font $ffont -relief ridge -width $tw -height $th
		$ms insert 1.0 $msg
		pack $ms -side bottom -fill x -pady 1m -padx $px
	}

	lappend props_buttons $ac.button $cf.button $vo.button $sh.button

	wm resizable $w 1 0
	center_win $w
	update
	wm minsize $w [winfo width $w] [winfo height $w]

	tkwait window $w
}

proc do_new_client {} {
	global newclient ffont bfont

	set w .newclient
	catch {destroy $w}
	toplevel $w
	label $w.l -text "Hostname: " -font $bfont
	set newclient ""
	entry $w.e -width 16 -textvariable newclient -font $bfont 
	button $w.b -text OK -command "destroy $w" -font $bfont
	bind $w.e <Return> "update; after 100; destroy $w"

	pack $w.l $w.e $w.b -side left -pady 1m -padx 1m
	focus $w.e
	center_win $w
	update 
	
	tkwait window $w

	regsub -all {[{}()~!$&*|;'"`{}<>\[\]]} $newclient "" newclient
	#'
	if {$newclient != ""} {
		push_new_value "connect" "connect" "$newclient" 1
	}
}

proc do_disconnect_all {} {
	push_new_value "disconnect" "disconnect" "all" 1
}

proc pmenu {m x y} {
	if {![winfo exists $m]} {
		return
	}
	set x [expr $x-10]
	set y [expr $y-10]
	$m post $x $y
}

proc set_client_balloon {str} {
	global client_balloon vnc_display
	
	set client_balloon "$vnc_display"
	set count 0
	foreach client [split $str ","] {
		if {[regexp {^(.*):(.*):(.*):(.*):(.*):(.*):(.*)$} \
		    $client m0 m1 m2 m3 m4 m5 m6 m7]} {
			# id:ip:port:user:hostname:input:loginvo
			set id    $m1
			set ip    $m2
			set port  $m3
			set user  $m4
			if {[string length $user] >= 24} {
				# weird identd hash...
				set user [string range $user 0 8]
				set user "${user}..."
			}
			set host  $m5
			set input $m6
			set vo    $m7
			if [regexp {^[ 	]*$} $host] {
				set host $ip
			}
			set client_balloon "${client_balloon}\n$user\@$host"
			if {$vo == "1"} {
				set client_balloon "${client_balloon} - view"
			} else {
				set client_balloon "${client_balloon} - full"
			}
		} else {
			set i [expr $count+1]
			set client_balloon "${client_balloon}\nunknown-host$i"
		}
		incr count
	}
	if {$count == 0} {
		set client_balloon "${client_balloon}\nNo connections."
	}
	icon_win_cfg $count
}

proc read_client_info {} {
	global x11vnc_client_file client_tail client_str
	global client_tail_read
	set db 0

	if {$client_tail != ""} {
		after 100
		set str ""
		set count [gets $client_tail str]
		if {$db} {puts stderr "read_client_info: $str"}

		if {$count == -1 || [eof $client_tail]} {
			close $client_tail
			catch {file delete $x11vnc_client_file}
			clean_icon_exit
		}
		if {$count > 0 && ![regexp {^[ 	]*$} $str]} {
			set client_tail_read 1
			if {$str == "quit"} {
				catch {file delete $x11vnc_client_file}
				clean_icon_exit
			} elseif {$str != "skip"} {
				if {$str == "none"} {
					set str ""
				}
				update_clients_menu $str
				set client_str $str
				set_client_balloon $str
			}
		}
	}
}

proc show_client_balloon {} {
	global icon_mode icon_win props_win full_win
	global client_balloon ffont

	set noinfo "tkx11vnc: no client information"
	set noinfo "$noinfo\navailable from x11vnc ..."
	if ![info exists client_balloon] {
		set client_balloon $noinfo
	}
	if {$client_balloon == ""} {
		set client_balloon $noinfo
	}

	set x [expr [winfo rootx $icon_win] + ([winfo width $icon_win]/2)]
	set y [expr [winfo rooty $icon_win] + [winfo height $icon_win] + 4]

	set w .client_balloon
	catch {destroy $w}
	toplevel $w -bg black -screen [winfo screen $icon_win]
	wm overrideredirect $w 1
	label $w.l -text "$client_balloon" -relief flat -bg "#ffffaa" -fg black \
		-padx 2 -pady 0 -anchor w -justify left -font $ffont
	pack $w.l -side left -padx 1 -pady 1

	set w2 [winfo reqwidth  $w.l]
	set h2 [winfo reqheight $w.l]

	set W [winfo screenwidth  $w]
	set H [winfo screenheight $w]

	if {[expr $x+$w2] > $W} {
		set w3 [winfo width $icon_win]
		set x [expr "$W - $w2 - $w3 - 4"] 
	}
	if {[expr $y+$h2] > $H} {
		set h3 [winfo height $icon_win]
		set y [expr "$H - $h2 - $h3 - 4"] 
	}

	wm geometry $w +${x}+${y}
}

proc kill_client_balloon {} {
	global client_balloon_id client_balloon_win
	if [info exists client_balloon_id] {
		catch {after cancel $client_balloon_id}
	}
	if [winfo exists .client_balloon] {
		destroy .client_balloon
	}
}

proc icon_win_cfg {clients} {
	global icon_win client_tail client_tail_read
	if {$clients > 0} {
		$icon_win configure -bg black -fg white
	} else {
		$icon_win configure -bg white -fg black
	}
	if {$client_tail == "" || !$client_tail_read} {
		$icon_win configure -fg red
	}
}

proc server_accept {sock addr port} {
	global socket_cookie server socket_got_callback
	global client_tail
	set db 0

	if {$db} {puts stderr "sock=$sock addr=$addr port=$port"}

	update; update idletasks
	after 50
	update; update idletasks
	set count [gets $sock str]

	if {$count >= 0} {
		set str [string trim $str]
		if {$db} {puts stderr "server_accept: \"$str\""}
		if {$str == "COOKIE:$socket_cookie"} {
			set client_tail $sock
			if {$db} {puts stderr "cookie matched. $client_tail"}
		} else {
			if {$db} {puts stderr "cookie NO matched."}
		}
	}
	catch {close $server}
	set socket_got_callback 1
	if {$db} {puts stderr "socket_got_callback $socket_got_callback"}
}

proc try_client_info_sock {} {
	global socket_cookie server socket_got_callback
	global x11vnc_started hostname
	set start 13037
	set tries 100
	set socket_got_callback 0

	if {$x11vnc_started} {
		set myaddr "127.0.0.1"
	} else {
		set myaddr $hostname
	}
	set socket_cookie [clock clicks]
	
	for {set i 0} {$i <= $tries} {incr i} {
		set port [expr $start + $i]
		set server [socket -server server_accept -myaddr $myaddr $port]
		if {$server == ""} {
			continue
		}
		if {[eof $server]} {
			continue
		}
		set err ""
		catch {set err [fconfigure $server -error]}
		#puts "err: $server: $err"
		if {$err == ""} {
			break
		}
	}
	if {$server == ""} {
		append_text "try_client_info_sock: server socket failed.\n"
		return
	}
	run_remote_cmd [list "-nosync" "-R" "noop"]
	after 500
	run_remote_cmd [list "-nosync" "-R" \
		"client_info_sock:$myaddr:$port:$socket_cookie"]
	after 500

	set aftid ""
	if {$socket_got_callback == 0} {
		set aftid [after 10000 {set socket_got_callback 2}]
		tkwait variable socket_got_callback
	}

	if {$aftid != ""} {
		catch {after cancel $aftid}
	}

	if {$socket_got_callback != 1} {
		puts stderr "try_client_info_sock failed: no callback\n"
		catch {close $server}
	} else {
		setup_client_tail
	}
}

proc set_icon_label {} {
	global icon_win

	set lab [get_icon_label]
	
	if {[info exists icon_win]} {
		$icon_win configure -text $lab
	}
}

proc get_icon_label {{set 0}} {
	global icon_minimal 

	set lab0 "x11\nvnc"
	
	if {$icon_minimal} {
		set lab [get_vnc_display_number]
		if {$lab != "none"} {
			set lab "  :$lab"
		}
	} else {
		set lab $lab0
	}
	return $lab
}

proc lmenu {menu} {
	global window_view_posted
	after 100
	if {!$window_view_posted} {
		after 100
		if {!$window_view_posted} {
			$menu unpost
			return
		}
	}
	# kludge for WindowView
	focus $menu
}

proc old_balloon {} {
	global client_str saved_client_str
	set str ""
	if {[info exists client_str]} {
		if {$client_str != ""} {
			set str $client_str
		}
	}
	if {$str == ""} {
		if {[info exists saved_client_str]} {
			set str $saved_client_str
		}
	}
	if {$str != ""} {
		set_client_balloon $str
	}
}

proc make_icon {} {
	global icon_mode icon_embed_id icon_win props_win full_win
	global tray_embed tray_running env
	global x11vnc_client_file client_tail client_str saved_clients_str
	global client_balloon_id
	global bfont sfont snfont ffont
	global icon_minimal gui_start_mode
	global window_view_posted menu_var x11vnc_gui_geom
	set min_x 24
	set min_y 24
	
	set font $bfont
	set mfont $font

	if {$tray_embed} {
		set font $sfont
		set mfont $snfont
	}
	if {[info exists env(X11VNC_ICON_FONT)]} {
		set font $env(X11VNC_ICON_FONT)
	}
	if {[regexp {([0-9][0-9]*)x([0-9][0-9]*)} $x11vnc_gui_geom m mx my]} {
		if {$mx < $min_x} {
			set min_x $mx
		}
		if {$my < $min_y} {
			set min_y $my
		}
	}
	wm minsize . $min_x $min_y

	if {$tray_embed && $tray_running} {
		wm withdraw .
	}

	set l .icon
	set icon_win $l
	catch destroy {$icon_win}
	if {$icon_minimal} {
		set bw 1
	} else {
		set bw 5
	}
	set lab [get_icon_label]
	label $l -text $lab -borderwidth $bw -font $font
	icon_win_cfg 0


	set window_view_posted 0
	pack $l -fill both -expand 1
	set menu "$l.menu"
	menu $menu -tearoff 0 -postcommand {set window_view_posted 0}
	$menu add command -font $mfont -label "Properties" -command do_props
	$menu add command -font $mfont -label "Help" -command "menu_help Tray"
	$menu add separator
	$menu add command -font $mfont -label "New Client" -command do_new_client
	$menu add command -font $mfont -label "Disconnect All" -command do_disconnect_all
	$menu add separator

	set wv "$menu.casc1"
	catch {destroy $wv}
	menu $wv -tearoff 0 -font $ffont \
		-postcommand {set window_view_posted 1}
	foreach val {full icon tray} {
		$wv add radiobutton -label "$val" \
			-value "$val" -font $ffont \
			-command "do_var WindowView" \
			-variable menu_var(WindowView)
	}
	$menu add cascade -font $mfont -label "Window View" -menu $wv

	$menu add command -font $mfont -label "Stop x11vnc" -command clean_icon_exit

	bind $icon_win <ButtonPress-1> "pmenu $menu %X %Y"
	bind $icon_win <ButtonPress-3> "pmenu $menu %X %Y"
	bind $icon_win <Enter> {set client_balloon_id [after 500 show_client_balloon]}
	bind $icon_win <Button> {kill_client_balloon}
	bind $icon_win <Leave>  {kill_client_balloon}
	bind $icon_win <ButtonPress-2> {kill_client_balloon; show_client_balloon}
	bind $menu <Leave> "lmenu $menu"
	bind $menu <KeyPress-Escape> "$menu unpost"

	if {!$tray_embed || !$tray_running} {
		global x11vnc_gui_geom
		if {$x11vnc_gui_geom != ""} {
			set doit 1
			if {[regexp {x} $x11vnc_gui_geom]} {
				if {$gui_start_mode == "full"} {
					set doit 0
				}
			} 
			if {$doit} {
				wm geometry . $x11vnc_gui_geom
			}
		}
	}
	wm deiconify .

	if {$client_tail == "" } {
		stop_watch on
		try_client_info_sock
		if {$client_tail == "" } {
			after 500
			try_client_info_sock
		}
		stop_watch off
	}
	if {$client_tail == "" } {
		set m "\n"
		set m "${m}tkx11vnc:\n"
		set m "${m}\n"
		set m "${m}    Warning -- running in icon/tray mode but the\n"
		set m "${m}    connected client info channel from x11vnc is\n"
		set m "${m}    not working.  The viewer client list and icon\n"
		set m "${m}    color indicator will not be accurate.\n"
		set m "${m}\n"
		set m "${m}    You may need to restart \"x11vnc -gui tray ...\"\n"
		set m "${m}    for this to work properly.\n"
		set m "${m}\n"
		textwin "Warning" "Warning" $m
		update
	}

	old_balloon
}

proc clean_client_tail {} {
	global client_tail client_tail_read
	if [info exists client_tail] {
		if {$client_tail != ""} {
			set p ""
			catch {set p [pid $client_tail]}
			if {$p != ""} {
				catch {exec kill -TERM $p >/dev/null 2>/dev/null}
			}
			catch {close $client_tail}
			set client_tail ""
		}
	}
	set client_tail_read 0
}

proc clean_icon_exit {} {
	clean_client_tail
	push_new_value "stop" "stop" 1 0
	set_connected no
	update
	destroy .
	exit
}

proc make_gui {mode} {
	global icon_mode tray_embed full_win icon_win
	global top_widget_names x11vnc_gui_geom
	global gui_current_state make_gui_count
	global x11vnc_connect connected_to_x11vnc
	global x11_display
	global gui_start_mode

	incr make_gui_count

	if {$gui_start_mode == ""} {
		set gui_start_mode $mode
	}

	wm withdraw .

	set full_geom ""
	if {[winfo exists .full]} {
		catch {set full_geom [wm geometry .full]}
	}

	set fw .full
	set full_win $fw
	catch {pack forget $full_win}
	catch {pack forget $icon_win}
	catch {destroy $full_win}
	catch {destroy $icon_win}

	wm minsize . 1 1

	if {$mode == "full"} {
		frame $fw
		set icon_mode 0

		wm protocol .     WM_DELETE_WINDOW "destroy .; exit"
		make_widgets $fw

		set w "."
		wm geometry $w ""
		if {$x11vnc_gui_geom != ""} {
			set doit 1
			if {[regexp {x} $x11vnc_gui_geom]} {
				if {$gui_start_mode != $mode} {
					set doit 0
				}
			}
			if {$doit} {
				wm geometry $w $x11vnc_gui_geom
			}
		}
		pack $fw -fill both -expand 1

	} elseif {$mode == "icon" || $mode == "tray"} {

		toplevel $fw
		wm withdraw $fw

		wm protocol $fw WM_DELETE_WINDOW "wm withdraw .full"
		wm protocol .   WM_DELETE_WINDOW "clean_icon_exit"
		
		if {$mode == "icon"} {
			set tray_embed 0
		} elseif {$mode == "tray"} {
			set tray_embed 1
		}
		set icon_mode 1
		make_widgets $fw
		set w $fw
		make_icon
		wm geometry $fw ""
		wm geometry .   ""
	} else {
		return
	}
	set_view_variable $mode
	set gui_current_state $mode


	wm deiconify .
	update idletasks
	wm minsize $w [winfo width $w] [winfo height $w]
	if {$mode == "full" && $make_gui_count > 1} {
		center_win .
	}

	if {$make_gui_count == 1} {
		if {$x11vnc_connect} {
			try_connect_and_query_all
		}
	} else {
		set_name "RESTORE"
	}
	set_widgets

	if {$mode == "icon" || $mode == "tray"} {
		setup_client_tail
		if {$mode == "tray"} {
			setup_tray_embed
		}
	}
}

proc make_widgets {top} {
	global template make_gui_count
	global menu_b menu_m menu_count
	global item_opts item_bool item_case item_menu item_entry menu_var unset_str
	global item_cascade
	global info_label info_str x11_display vnc_display
	global text_area text_area_str
	global entry_box entry_str entry_set entry_label entry_ok entry_browse
	global entry_help entry_skip
	global bfont ffont beginner_mode
	global helptext helpremote helplabel
	global icon_mode icon_win props_win full_win
	global top_widget_names


	# Make the top label
	set label_width 80
	set info_label "$top.info"
	label $info_label -textvariable info_str -bd 2 -relief groove \
		-anchor w -width $label_width -font $ffont
	pack $info_label -side top -fill x -expand 0

	set top_widget_names(info) $info_label

	# Extract the Rows:
	set row 0;
	set colmax 0;
	foreach line [split $template "\n"] {
		if {[regexp {^Row: (.*)} $line rest]} {
			set col 0
			foreach case [split $rest] {
				if {$case == "" || $case == "Row:"} {
					continue
				}
				set menu_row($case) $row
				set menu_col($case) $col

				lappend cases($col) $case;
				set len [string length $case]
				if {[info exists max_len($col)]} {
					if {$len > $max_len($col)} {
						set max_len($col) $len
					}
				} else {
					set max_len($col) $len
				}
				incr col
				if {$col > $colmax} {
					set colmax $col
				}
			}
			incr row;
		}
	}

	# Make frames for the rows and make the menu buttons.
	set f "$top.menuframe"
	frame $f
	for {set c 0} {$c < $colmax} {incr c} {
		set colf "$f.menuframe$c"
		frame $colf
		pack $colf -side left -fill y
		set fbg [$colf cget -background]
		foreach case $cases($c) {
			set menub "$colf.menu$case";
			set menu "$colf.menu$case.menu";
			set menu_b($case) $menub
			set menu_m($case) $menu
			set ul 0
			foreach char [split $case ""] {
				set char [string tolower $char]
				if {![info exists underlined($char)]} {
					set underlined($char) 1
					break
				}
				incr ul
			}
			menubutton $menub -text "$case" -underline $ul \
				-anchor w -menu $menu -background $fbg \
				-font $bfont
			pack $menub -side top -fill x
			menu $menu -tearoff 0 -postcommand menu_posted
		}
	}
	pack $f -side top -fill x
	set top_widget_names(menuframe) $f

	make_menu_items

	# Make the x11 and vnc display label bar:
	set df "$top.displayframe"
	frame $df -bd 1 -relief groove
	set top_widget_names(displayframe) $df

	set df_x11 "$df.xdisplay"

	if {$make_gui_count == 1} {
		no_x11_display
	}
	set lw [expr {$label_width / 2}]
	label $df_x11 -textvariable x11_display -width $lw -anchor w \
		-font $ffont

	set df_vnc "$df.vdisplay"

	if {$make_gui_count == 1} {
		no_vnc_display
	}
	label $df_vnc -textvariable vnc_display -width $lw -anchor w \
		-font $ffont

	pack $df_x11 $df_vnc -side left 
	pack $df -side top -fill x

	# text area
	set text_area "$top.text"
	text $text_area -height 12 -relief ridge -font $ffont
	pack $text_area -side top -fill both -expand 1
	set top_widget_names(text) $text_area


	if {$text_area_str == ""} {
		set str "Click Help -> gui for overview."
		append_text "\n$str\n\n"
	} else {
		append_text $text_area_str
	}

	# Make entry box stuff
	set ef "$top.entryframe"
	frame $ef -bd 1 -relief groove
	set top_widget_names(entryframe) $ef

	# Entry Label
	set ef_label "$ef.label"
	label $ef_label -textvariable entry_str -anchor w -font $bfont

	set entry_str "Set... : "
	set ef_entry "$ef.entry"
	entry $ef_entry -relief sunken -font $ffont
	bind $ef_entry <KeyPress-Return> {set entry_set 1}
	bind $ef_entry <KeyPress-Escape> {set entry_set 0}

	# Entry OK button
	set bpx "1m"
	set bpy "1"
	set hlt "0"
	set ef_ok "$ef.ok"
	button $ef_ok -text OK -pady $bpy -padx $bpx -command {set entry_set 1} \
		-highlightthickness $hlt \
		-font $bfont

	# Entry Skip button
	set ef_skip "$ef.skip"
	button $ef_skip -text Cancel -pady $bpy -padx $bpx -command {set entry_set 0} \
		-highlightthickness $hlt \
		-font $bfont

	# Entry Help button
	set ef_help "$ef.help"
	button $ef_help -text Help -pady $bpy -padx $bpx -command \
		{menu_help $entry_dialog_item} -font $bfont \
		-highlightthickness $hlt

	# Entry Browse button
	set ef_browse "$ef.browse"
	button $ef_browse -text "Browse..." -pady $bpy -padx $bpx -font $bfont \
		-highlightthickness $hlt \
		-command {entry_insert [tk_getOpenFile]} 

	pack $ef_label -side left
	pack $ef_entry -side left -fill x -expand 1
	pack $ef_ok   -side right
	pack $ef_skip -side right
	pack $ef_help -side right
	pack $ef -side bottom -fill x

	set entry_ok $ef_ok
	set entry_skip $ef_skip
	set entry_help $ef_help
	set entry_box $ef_entry
	set entry_browse $ef_browse
	set entry_label $ef_label
	entry_disable

}

proc menu_bindings {m} {
	set db 0
	if {$db} {puts "menu_bindings $m"}

	bind $m <<MenuSelect>> {
#syntax hilite bug \
MenuSelect>>
		set n [%W index active]
		set db 0
		if {$db} {puts stderr "menu_bindings %W $n"}
		set label "    "
		if {$n != "none"} {
			set str %W,$n
			set which ""

			if {$db} {puts "menu_bindings $str"}
			if {[info exists helplabel($str)]} {
				set vname [format %%-16s $helplabel($str)]
				set label "Click (?) for help on: $vname"
				set which $helplabel($str)
			}
			if {$which == ""} {
				;
			} elseif {$which == "passwd" || $which == "viewpasswd"} {
				;
			} elseif {[is_action $which]} {
				if {[info exists menu_var($which)] 
				    && $menu_var($which) != ""} {
					set label "$label value: $menu_var($which)"
				} else {
					set label "$label (is action)"
				}
			} elseif {[info exists menu_var($which)]} {
				set label "$label value: $menu_var($which)"
				if {$which == "http"} {
					global vnc_url
					set label "$label  URL: $vnc_url"
				}
			}
		}
		set_info $label
	}
}

proc key_bindings {} {
	global env menus_disabled
	if {[info exists env(USER)] && $env(USER) == "runge"} {
		# quick restart
		bind . <Control-KeyPress-c> {exec $argv0 $argv &; destroy .}
	}
	bind . <Control-KeyPress-p> { \
		global menus_disabled; \
		if {!$menus_disabled} {try_connect_and_query_all} \
	}
	bind . <Control-KeyPress-u> { \
		global menus_disabled; \
		if {!$menus_disabled} {query_all 0} \
	}
	bind . <Control-KeyPress-r> { \
		global menus_disabled; \
		if {!$menus_disabled} {query_all 0} \
	}
	bind . <Control-KeyPress-d> { \
		global menus_disabled; \
		if {!$menus_disabled} {detach_from_display} \
	}
	bind . <Control-KeyPress-a> { \
		global menus_disabled; \
		if {!$menus_disabled} {try_connect_and_query_all} \
	}
}

proc stop_watch {onoff} {
	global orig_cursor text_area entry_box

	set widgets [list .]
	if [info exists text_area] {
		if {$text_area != ""} {
			lappend widgets $text_area
		}
	}
	if [info exists entry_box] {
		if {$entry_box != ""} {
			lappend widgets $entry_box
		}
	}

	if {$onoff == "on"} {
		foreach item $widgets {
			if {![winfo exists $item]} {
				continue
			}
			$item config -cursor {watch}
		}
	} else {
		foreach item $widgets {
			if {![winfo exists $item]} {
				continue
			}
			$item config -cursor {}
		}
	}
	update
}

proc double_check_noremote {} {
	set msg "\n\n"
	append msg "*** WARNING: setting \"noremote\" will disable ALL remote control commands (i.e.\n"
	append msg "*** WARNING: *this* gui will be locked out). Do you really want to do this?\n"
	append msg "*** WARNING: If so, press \"OK\", otherwise press \"Cancel\"\n"
	append msg "\n"
	bell
	return [warning_dialog $msg "noremote"]
}

proc double_check_start_x11vnc {} {
	global hostname
	set msg [get_start_x11vnc_txt]
	append msg "\n"
	append msg "*** To run the above command on machine \"$hostname\" to\n"
	append msg "*** start x11vnc press \"OK\" otherwise press \"Cancel\".\n"
	return [warning_dialog $msg "start"]
}

proc get_start_x11vnc_txt {} {
	set cmd [get_start_x11vnc_cmd]
	set str [join $cmd]
	set msg ""
	append msg "\n"
	append msg "==== The command built so far is: ====\n";
	append msg "\n"
	append msg "$str\n"
	return $msg
}

proc show_start_cmd {} {
	set msg [get_start_x11vnc_txt]
	append_text "$msg\n"
}

proc get_start_x11vnc_cmd {{show_rc 0}} {
	global menu_var unset_str x11vnc_prog

	set xterm_cmd "xterm -iconic -geometry 80x35 -title x11vnc-console -e"

	set cmd [split $xterm_cmd]

	lappend cmd $x11vnc_prog

	set rc_txt ""

	set saw_id 0

	foreach item [lsort [array names menu_var]] {
		if {![active_when_starting $item]} {
			continue
		}
		if {[is_action $item]} {
			continue
		}
		if {$item == "debug_gui"} {
			continue
		}
		if {$item == "id" || $item == "sid"} {
			set val $menu_var($item);
			if {$val == "0x0" || $val == "root"} {
				continue
			}
		}
		if {$item == "sid" && $saw_id} {
			continue
		}
		if {$item == "id"} {
			set saw_id 1
		}
		if {$item == "httpport" && $menu_var($item) == "0"} {
			continue
		}
		if {$item == "progressive" && $menu_var($item) == "0"} {
			continue
		}
		if {$item == "dontdisconnect" && $menu_var($item) == "-1"} {
			continue
		}
		if {$item == "alwaysshared" && $menu_var($item) == "-1"} {
			continue
		}

		if {[value_is_bool $item]} {
			if {[info exists menu_var($item)]} {
				if {$menu_var($item)} {
					lappend cmd "-$item"
					append rc_txt "-$item\n"
				}
			}
		} elseif {[value_is_string $item]} {
			if {[info exists menu_var($item)]} {
				if {$menu_var($item) != ""
				    && $menu_var($item) != $unset_str} {
					set nitem $item
					if {$nitem == "screen_blank"} {
						set nitem "sb"
					} elseif {$nitem == "xrandr_mode"} {
						set nitem "xrandr"
					} elseif {$nitem == "wireframe_mode"} {
						set nitem "wireframe"
					} elseif {$nitem == "solid_color"} {
						set nitem "solid"
					}
					lappend cmd "-$nitem"
					lappend cmd $menu_var($item)
					append rc_txt "-$nitem $menu_var($item)\n"
				}
			}
		}
	}
	lappend cmd "2>"
	lappend cmd "/dev/null"
	lappend cmd "&"
	
	if {$show_rc} {
		return $rc_txt
	} else {
		return $cmd
	}
}

proc start_x11vnc {} {
	global menu_var unset_str
	global x11vnc_prog x11vnc_xdisplay
	global connected_to_x11vnc

	if {$connected_to_x11vnc} {
		append_text "\n"
		append_text "WARNING: Still connected to an x11vnc server.\n"
		append_text "WARNING: Use \"stop\" or \"detach\" first.\n"
		return 0
	}

	if {![double_check_start_x11vnc]} {
		return
	}

	set x11vnc_xdisplay ""
	if {[info exists menu_var(display)]} {
		if {$menu_var(display) != "" && $menu_var(display) != $unset_str} {
			set x11vnc_xdisplay $menu_var(display)
		}
	}

	set cmd [get_start_x11vnc_cmd]

	set str [join $cmd]
	regsub { -e} $str " -e \\\n   " str

	if {0} {
		puts "running: $str"
		foreach word $cmd {
			puts "   word: $word"
		}
	}

	append_text "Starting x11vnc in an iconified xterm with command:\n"
	append_text "  $str\n\n"
	catch {[eval exec $cmd]}
	after 500
	try_connect_and_query_all 3
}

proc run_remote_cmd {opts} {
	global menu_var x11vnc_prog x11vnc_cmdline x11vnc_xdisplay
	global x11vnc_auth_file x11vnc_connect_file

	set debug [in_debug_mode]

	if {[lindex $opts 0] == "-R" && [lindex $opts 1] == "noremote"} {
		set str [join $opts]
		if ![double_check_noremote] {
			append_text "skipping: x11vnc $str"
			return ""
		} else {
			append_text "running: x11vnc $str (please do \"Actions -> detach\" to clean things up)\n"
			append_text "subsequent -R/-Q commands should fail..."
		}
	}

	set cmd ""

	lappend cmd $x11vnc_prog;

	if {$x11vnc_connect_file != ""} {
		lappend cmd "-connect"
		lappend cmd $x11vnc_connect_file
	} else {
		if {$x11vnc_xdisplay != ""} {
			lappend cmd "-display"
			lappend cmd $x11vnc_xdisplay
		}
		if {$x11vnc_auth_file != ""} {
			lappend cmd "-auth"
			lappend cmd $x11vnc_auth_file
		}
	}
	lappend cmd "-sync"
	foreach word $opts {
		lappend cmd $word
	}
	lappend cmd "2>"
	lappend cmd "/dev/null"
#	lappend cmd "/tmp/nono"

	if {0} {
		set str [join $cmd]
		puts "running: $str"
		foreach word $cmd {
			puts "   word: $word"
		}
	}

	set output ""
	menus_disable

	stop_watch on
	catch {set output [eval exec $cmd]}
	stop_watch off
#puts stderr [exec cat /tmp/nono]

	menus_enable
	if {$debug} {
		if {[string length $output] > 100} {
			set str [string range $output 0 100]
			append_text "output: $str ...\n"
		} else {
			append_text "output: $output\n"
		}
	}
	return $output
}

proc try_connect_and_query_all {{n 2}} {
	for {set i 0} {$i < $n} {incr i} {
		if {$i > 0} {
			after 500
			append_text "trying again ...\n"
		}
		if {[try_connect]} {
			query_all
			break
		}
	}
}

proc try_connect {} {
	global x11vnc_xdisplay connected_to_x11vnc reply_xdisplay
	global menu_var unset_str

	if {! $connected_to_x11vnc} {
		if {[info exists menu_var(display)]} {
			set d $menu_var(display)
			if {$d != "" && $d != $unset_str && $d != $x11vnc_xdisplay} {
				set x11vnc_xdisplay $menu_var(display)
				append_text "Setting X display to: $x11vnc_xdisplay\n"
			}
		}
	}

	set_info "Pinging $x11vnc_xdisplay ..."
	set rargs [list "-Q" "ping"]
	set result [run_remote_cmd $rargs]

	if {[regexp {^ans=ping:} $result]} {
		regsub {^ans=ping:} $result {} reply_xdisplay
		set msg "Connected to $reply_xdisplay"
		set_info $msg
		append_text "$msg\n"
		set_connected yes
		fetch_displays
		return 1
	} else {
		set str "x11vnc server."
		if {$x11vnc_xdisplay != ""} {
			set str $x11vnc_xdisplay
		}
		set msg "No reply from $str"
		set_info $msg
		append_text "$msg\n"
		set_connected no
		return 0
	}
}

proc set_view_variable {val} {
	global menu_var
	set menu_var(WindowView) $val
}
proc get_view_variable {} {
	global menu_var
	if {![info exists menu_var(WindowView)]} {
		set menu_var(WindowView) "none"
	}
	return $menu_var(WindowView)
}

proc change_view_state {} {
	global menu_var gui_current_state

	set new [get_view_variable]

	set old $gui_current_state
	#puts "$old -> $new"

	if {$old == $new} {
		return
	}

	if {$old == "full" || $old == "icon" || $old == "tray"} {
		;
	} else {
		set old "none"
	}

	if {$new == "full" || $new == "icon" || $new == "tray"} {
		if {$old == "tray"} {
			# sigh XReparentWindow would be too easy...
			# undo_tray_embed
			restart_everything $new
			destroy .
			exit
		}
		make_gui $new
	} else {
		set_view_variable $old
	}
}

proc setup_client_tail {} {
	global client_tail
	if {$client_tail != ""} {
		fileevent $client_tail readable read_client_info
	}
}

proc setup_tray_embed {} {
	global icon_win
	update
	set w [winfo width .]
	set h [winfo height .]
	if {$w < 24} {
		set w 24
	}
	if {$h < 24} {
		set h 24
	}
	wm minsize . $w $h
	set wid [winfo id .]	
	push_new_value "remote-cmd" "remote-cmd" "trayembed:$wid" 0
}

proc restart_everything {gui_mode} {
	global env gui_argv0 x11vnc_prog full_win
	if {$gui_mode == "full"} {
		set env(X11VNC_ICON_MODE) 0
	} elseif {$gui_mode == "icon"} {
		set env(X11VNC_ICON_MODE) 1
	} elseif {$gui_mode == "tray"} {
		if {![regexp -nocase {TRAY} $env(X11VNC_ICON_MODE)]} 	{
			set env(X11VNC_ICON_MODE) "TRAY"
		}
	}
	puts stderr ""
	puts stderr "tkx11vnc: restarting gui to leave tray mode."
	puts stderr "  new gui will be running in the background."
	puts stderr "  use kill(1) rather than Ctrl-C to kill it."
	puts stderr ""
	if {[info exists env(X11VNC_RESTART_DEPTH)]} {
		set n $env(X11VNC_RESTART_DEPTH)
		incr n
		set env(X11VNC_RESTART_DEPTH) $n
	} else {
		set env(X11VNC_RESTART_DEPTH) 0
	}
	set env(X11VNC_ICON_SETPASS) ""

	if {![info exists env(X11VNC_WISHCMD)]} {
		puts stderr "failure in restart_everything."
		exit 1;
	}

	set code [exec $x11vnc_prog -printgui]
	if {[string length $code] < 20000} {
		puts stderr "failure in restart_everything."
		exit 1;
	}
	set tmp "/tmp/x11vnc[pid]"
	file delete -force $tmp
	if {[file exists $tmp]} {
		puts stderr "failure in restart_everything."
		exit 1;
	}
	set fh [open $tmp "a"]
	if {![file owned $tmp]}  {
		puts stderr "failure in restart_everything."
		exit 1;
	}
	file attributes $tmp -permissions "0400"
	puts $fh $code
	close $fh

	#puts stderr [exec ls -l $tmp]

	wm withdraw .
	catch {wm withdraw $full_win}
	update

	exec $env(X11VNC_WISHCMD) $tmp &
	after 2000
	file delete -force $tmp
	
	destroy .
	exit
}

proc undo_tray_embed {} {
	global icon_win
	set wid [winfo id .]	
	push_new_value "remote-cmd" "remote-cmd" "trayunembed:$wid" 0
}

############################################################################
# main:

global env x11vnc_prog x11vnc_cmdline x11vnc_xdisplay x11vnc_connect;
global x11vnc_client_file x11vnc_gui_geom x11vnc_started vnc_url
global x11vnc_auth_file x11vnc_connect_file beginner_mode simple_gui_created
global helpall helptext helpremote helplabel hostname osname
global all_settings reply_xdisplay always_update
global max_text_height max_text_width
global menu_var unset_str menus_disabled
global bfont ffont sfont snfont old_labels have_labelframes
global connected_to_x11vnc
global delay_sleep extra_sleep extra_sleep_split
global cache_all_query_vars
global last_query_all_time query_all_freq client_tail client_tail_read
global icon_mode tray_embed tray_running icon_setpasswd icon_embed_id
global icon_noadvanced icon_minimal
global make_gui_count text_area_str
global gui_argv0 gui_start_mode

set unset_str "(unset)"
set vnc_url $unset_str
set connected_to_x11vnc 0
set menus_disabled 0
set max_text_height 40
set max_text_width 90
set bfont "-adobe-helvetica-bold-r-*-*-*-120-*-*-*-*-*-*"
set sfont "-adobe-helvetica-bold-r-*-*-*-100-*-*-*-*-*-*"
set snfont "-adobe-helvetica-medium-r-*-*-*-100-*-*-*-*-*-*"
set ffont "fixed"
set help_indent 24;
set reply_xdisplay ""
set all_settings "None so far."
set always_update 1
set cache_all_query_vars ""
set query_all_freq 120
set last_query_all_time [clock seconds]
set client_tail ""
set client_tail_read 0
set make_gui_count 0
set text_area_str ""
set gui_argv0 $argv0
set gui_start_mode ""

# these are no longer used under x11vnc -sync:
set delay_sleep 350
set extra_sleep 1000
set extra_sleep_split 4

if {$tk_version < 8.0} {
	puts stderr ""
	puts stderr "*** tkx11vnc: tk version is old $tk_version, please use 8.0 or higher."
	puts stderr "***           will try to continue with reduced functionality..."
	puts stderr ""
}
if {[regexp {^[34]} $tk_version] || $tk_version == "8.0"} {
	set old_labels 1
} else {
	set old_labels 0
}
set have_labelframes 1
if {$tk_version < 8.4} {
	set have_labelframes 0
}

if {"$argv" == "-spit"} {
	set fh [open $argv0 r]
	puts "/*"
	puts " * tkx11vnc.h: generated by 'tkx11vnc -spit'"
	puts " * Abandon all hope, ye who enter here..."
	puts " * ...edit tkx11vnc instead."
	puts " */"
	puts "	char gui_code\[\] ="
	while {[gets $fh line] > -1} {
		regsub -all {\\} $line {\\\\} line
		regsub -all {"} $line {\\"} line
		puts "\"$line\\n\""
	}
	close $fh
	puts ";"
	exit 0
}


set_view_variable "full"

#puts [exec env | grep X11VNC]

# Read environment for clues:

set x11vnc_client_file "";
if {[info exists env(X11VNC_CLIENT_FILE)]} {
	set x11vnc_client_file $env(X11VNC_CLIENT_FILE);
	set file $x11vnc_client_file

	set client_tail ""
	if {[file exists $file] && [file isfile $file]} {
		if {[file readable $file] && [file owned $file]} {
			set client_tail [open "|tail -f $x11vnc_client_file" "r"]
		}
	}
	if {$client_tail != ""} {
		gets $client_tail tmp
		if [eof $client_tail] {
			clean_client_tail
			set client_tail ""
		}
	}
	catch {file delete -force $x11vnc_client_file}
}

if {[info exists env(X11VNC_PROG)]} {
	set x11vnc_prog $env(X11VNC_PROG);
} else {
	set x11vnc_prog "x11vnc";
}

if {[info exists env(X11VNC_CMDLINE)]} {
	set x11vnc_cmdline $env(X11VNC_CMDLINE);
} else {
	set x11vnc_cmdline "";
}

if {[info exists env(X11VNC_CONNECT)]} {
	set x11vnc_connect 1
} else {
	set x11vnc_connect 0;
}

if {[info exists env(X11VNC_GUI_GEOM)]} {
	set x11vnc_gui_geom $env(X11VNC_GUI_GEOM);
} else {
	set x11vnc_gui_geom ""
}

if {[info exists env(X11VNC_CONNECT_FILE)]} {
	set x11vnc_connect_file $env(X11VNC_CONNECT_FILE);
} else {
	set x11vnc_connect_file "";
}

set x11vnc_started 0
if {[info exists env(X11VNC_STARTED)]} {
	set x11vnc_started 1
}

if {[info exists env(X11VNC_XDISPLAY)]} {
	set x11vnc_xdisplay $env(X11VNC_XDISPLAY);
	set x11vnc_connect 1

} elseif {$argv != "" && [regexp {:[0-9]} $argv]} {
	set env(X11VNC_XDISPLAY) "$argv"
	set x11vnc_xdisplay "$argv"
	set x11vnc_connect 1

} elseif {[info exists env(DISPLAY)]} {
	set x11vnc_xdisplay $env(DISPLAY);
} else {
	set x11vnc_xdisplay ":0";
}

if {[info exists env(X11VNC_AUTH_FILE)]} {
	set x11vnc_auth_file $env(X11VNC_AUTH_FILE)
} else {
	set x11vnc_auth_file ""
}

set simple_gui_created 0
if {[info exists env(X11VNC_SIMPLE_GUI)]} {
	set beginner_mode 1
} else {
	set beginner_mode 0
}

set icon_mode 0
set tray_embed 0
set tray_running 0
if {![info exists env(X11VNC_ICON_MODE)]} {
	set icon_mode 0
} elseif {$env(X11VNC_ICON_MODE) == "" || $env(X11VNC_ICON_MODE) == "0"} {
	set icon_mode 0
} else {
	set icon_mode 1
	set_view_variable "icon"
	if [regexp -nocase {TRAY} $env(X11VNC_ICON_MODE)] {
		set tray_embed 1
	}
	if [regexp -nocase {RUNNING} $env(X11VNC_ICON_MODE)] {
		set tray_running 1
	}
}
set icon_setpasswd 0
if {[info exists env(X11VNC_ICON_SETPASS)]} {
	if {$env(X11VNC_ICON_SETPASS) != ""} {
		set icon_setpasswd 1
	}
}

set icon_noadvanced 0
if {[info exists env(X11VNC_ICON_NOADVANCED)]} {
	set icon_noadvanced 1
}

set icon_minimal 0
if {[info exists env(X11VNC_ICON_MINIMAL)]} {
	set icon_minimal 1
}

if {[info exists env(X11VNC_ICON_EMBED_ID)]} {
	set icon_embed_id $env(X11VNC_ICON_EMBED_ID)
} else {
	set icon_embed_id ""
}


set hostname [exec uname -n]
set osname [exec uname]

if {[regexp -nocase {IRIX} $osname]} {
	# IRIX "fixed" font is huge and doublespaced... 
	set ffont $snfont
}

#puts [exec env]
#puts "x11vnc_xdisplay: $x11vnc_xdisplay"

set env(X11VNC_STD_HELP) 1

# scrape the help output for the text and remote control vars:
parse_help;
parse_remote_help;
parse_query_help;

# tweaks to duplicate help text:
tweak_remote_help lock deny
tweak_remote_help unlock deny

tweak_both quiet q
tweak_help logfile o
tweak_both xwarppointer xwarp
tweak_both screen_blank sb

set_template

set_name "tkx11vnc"

key_bindings;

if {$icon_mode} {
	if {$tray_embed} {
		make_gui "tray"
	} else {
		make_gui "icon"
	}
	old_balloon
	if {$icon_setpasswd} {
		set m "You must specify a Session\n" 
		set m "${m}Password before VNC clients can\n" 
		set m "${m}connect. Enter one in the Password\n" 
		set m "${m}field and then Press \"OK\". This\n" 
		set m "${m}password is not stored, it is only\n" 
		set m "${m}used for this x11vnc session.\n" 
		do_props $m
		push_new_value "unlock" "unlock" 1 0
	}
} else {
	make_gui "full"
}

# main loop.