nsxiv/nsxiv.1

.TH NSXIV 1 nsxiv\-VERSION
.SH NAME
nsxiv \- Simple X Image Viewer
.SH SYNOPSIS
.B nsxiv
.RB [ \-abcfhiopqrtvZ ]
.RB [ \-A
.IR FRAMERATE ]
.RB [ \-e
.IR WID ]
.RB [ \-G
.IR GAMMA ]
.RB [ \-g
.IR GEOMETRY ]
.RB [ \-N
.IR NAME ]
.RB [ \-T
.IR TITLE ]
.RB [ \-n
.IR NUM ]
.RB [ \-S
.IR DELAY ]
.RB [ \-s
.IR MODE ]
.RB [ \-z
.IR ZOOM ]
.IR FILE ...
.SH DESCRIPTION
nsxiv is a simple image viewer for X.
.P
It has two modes of operation: image and thumbnail mode. The default is image
mode, in which only the current image is shown. In thumbnail mode a grid of 
small previews is displayed, making it easy to choose an image to open.
.P
Please note, that the fullscreen mode requires an EWMH/NetWM compliant window
manager.
.SH OPTIONS
.TP
.BI "\-A " FRAMERATE
Play animations with a constant frame rate set to
.IR FRAMERATE .
.TP
.B \-a
Play animations of multi-frame images.
.TP
.B \-b
Do not show info bar on bottom of window.
.TP
.B \-c
Remove all orphaned cache files from the thumbnail cache directory and exit.
.TP
.BI "\-e " WID
Embed nsxiv's window into window whose ID is
.IR WID .
.TP
.B \-f
Start in fullscreen mode.
.TP
.BI "\-G " GAMMA
Set image gamma to GAMMA (\-32..32).
.TP
.BI "\-g " GEOMETRY
Set window position and size. See section GEOMETRY SPECIFICATIONS of X(7) for
more information on GEOMETRY argument.
.TP
.BI "\-N " NAME
Set the resource name of nsxiv's X window to NAME.
.TP
.BI "\-T " TITLE
Set the window title to TITLE. Use the format `prefix:suffixmode'. Any string
literal is accepted for prefix, and the format of suffixmode is:

.EX
    Value  Format
    0      Empty
    1      Basename of file
    2      Full path to file
.EE

By defualt, prefix is set to "nsxiv - " and suffixmode is set to 1 (basename).
.TP
.BI "\-n " NUM
Start at picture number NUM.
.TP
.B \-h
Print brief usage information to standard output and exit.
.TP
.B \-i
Read names of files to open from standard input. Also done if FILE is `-'.
.TP
.B \-o
Write list of all marked files to standard output when quitting. In combination
with
.B \-i
nsxiv can be used as a visual filter/pipe.
.TP
.B \-p
Enable private mode, in which nsxiv does not write any cache or temporary files.
.TP
.B \-q
Be quiet, disable warnings to standard error stream.
.TP
.B \-r
Search the given directories recursively for images to view.
.TP
.BI "\-S " DELAY
Start in slideshow mode. Set the delay between images to
.I DELAY
seconds.
.I DELAY
may be a floating point number.
.TP
.BI "\-s " MODE
Set scale mode according to MODE character. Supported modes are: [d]own, 
[f]it, [F]ill, [w]idth, [h]eight.
.TP
.B \-t
Start in thumbnail mode.
.TP
.B \-v
Print version information to standard output and exit.
.TP
.B \-Z
The same as `\-z 100'.
.TP
.BI "\-z " ZOOM
Set zoom level to ZOOM percent.
.SH KEYBOARD COMMANDS
.SS General
The following keyboard commands are available in both image and thumbnail mode:
.TP
.BR 0 \- 9
Prefix the next command with a number (denoted via
.IR count ).
.TP
.B q
Quit nsxiv.
.TP
.B Return
Switch to thumbnail mode / open selected image in image mode.
.TP
.B f
Toggle fullscreen mode.
.TP
.B b
Toggle visibility of info bar on bottom of window.
.TP
.B Ctrl-x
Send the next key to the external key-handler. See section EXTERNAL KEY HANDLER
for more information.
.TP
.B g
Go to the first image.
.TP
.B G
Go to the last image, or image number
.IR count .
.TP
.B r
Reload image.
.TP
.B D
Remove current image from file list and go to next image.
.TP
.BR Ctrl-h ", " Ctrl-Left
Scroll left one screen width.
.TP
.BR Ctrl-j ", " Ctrl-Down
Scroll down one screen height.
.TP
.BR Ctrl-k ", " Ctrl-Up
Scroll up one screen height.
.TP
.BR Ctrl-l ", " Ctrl-Right
Scroll right one screen width.
.TP
.BR +
Zoom in.
.TP
.B \-
Zoom out.
.TP
.B m
Mark/unmark the current image.
.TP
.B M
Repeat last mark action on all images from the last marked/unmarked up to the
current one.
.TP
.B Ctrl-m
Reverse all image marks.
.TP
.B Ctrl-u
Remove all image marks.
.TP
.B N
Go
.I count
marked images forward.
.TP
.B P
Go
.I count
marked images backward.
.TP
.B {
Decrease gamma correction by
.I count
steps.
.TP
.B }
Increase gamma correction by
.I count
steps.
.TP
.B Ctrl-g
Reset gamma correction.
.SS Thumbnail mode
The following keyboard commands are only available in thumbnail mode:
.TP
.BR h ", " Left
Move selection left
.I count
times.
.TP
.BR j ", " Down
Move selection down
.I count
times.
.TP
.BR k ", " Up
Move selection up
.I count
times.
.TP
.BR l ", " Right
Move selection right
.I count
times.
.TP
.B R
Reload all thumbnails.
.SS Image mode
The following keyboard commands are only available in image mode:
.TP
Navigate image list:
.TP
.BR n ", " Space
Go
.I count
images forward.
.TP
.BR p ", " Backspace
Go
.I count
images backward.
.TP
.B [
Go
.I count
* 10 images backward.
.TP
.B ]
Go
.I count
* 10 images forward.
.TP
Handle multi-frame images:
.TP
.B Ctrl-n
Go
.I count
frames of a multi-frame image forward.
.TP
.B Ctrl-p
Go
.I count
frames of a multi-frame image backward.
.TP
.BR Ctrl-a ", " Ctrl-Space
Play/stop animations of multi-frame images.
.TP
Panning:
.TP
.BR h ", " Left
Scroll image 1/5 of window width or
.I count
pixel left.
.TP
.BR j ", " Down
Scroll image 1/5 of window height or
.I count
pixel down.
.TP
.BR k ", " Up
Scroll image 1/5 of window height or
.I count
pixel up.
.TP
.BR l ", " Right
Scroll image 1/5 of window width or
.I count
pixel right.
.TP
.B H
Scroll to left image edge.
.TP
.B J
Scroll to bottom image edge.
.TP
.B K
Scroll to top image edge.
.TP
.B L
Scroll to right image edge.
.TP
Zooming:
.TP
.B =
Set zoom level to 100%, or
.IR count %.
.TP
.B w
Set zoom level to 100%, but fit large images into window.
.TP
.B W
Fit image to window.
.TP
.B F
Fill image to window.
.TP
.B e
Fit image to window width.
.TP
.B E
Fit image to window height.
.TP
Rotation:
.TP
.B <
Rotate image counter-clockwise by 90 degrees.
.TP
.B >
Rotate image clockwise by 90 degrees.
.TP
.B ?
Rotate image by 180 degrees.
.TP
Flipping:
.TP
.B |
Flip image horizontally.
.TP
.B _
Flip image vertically.
.TP
Miscellaneous:
.TP
.B a
Toggle anti-aliasing.
.TP
.B A
Toggle visibility of alpha-channel, i.e. image transparency.
.TP
.B s
Toggle slideshow mode and/or set the delay between images to
.I count
seconds.
.SH MOUSE COMMANDS
The following mouse mappings are available in image mode:
.TP
General:
.TP
.B Button3
Switch to thumbnail mode.
.TP
Navigate image list:
.TP
.B Button1
Go to the next image if the mouse cursor is in the right part of the window or
to the previous image if it is in the left part.
.TP
Panning:
.TP
.B Button2
Pan the image according to the mouse cursor position in the window while
keeping this button pressed down.
.TP
Zooming:
.TP
.B ScrollUp
Zoom in.
.TP
.B ScrollDown
Zoom out.
.SH CONFIGURATION
The following X resources are supported:
.TP
.B window.background
Color of the window background
.TP
.B window.foreground
Color of the window foreground
.TP
.B bar.font
Name of Xft bar font
.TP
.B bar.background
Color of the bar background. Defaults to window.foreground
.TP
.B bar.foreground
Color of the bar foreground. Defaults to window.background
.TP
.B mark.foreground
Color of the mark foreground. Defaults to window.foreground
.TP
Please see xrdb(1) on how to change them.
.SH STATUS BAR
The information displayed on the left side of the status bar can be replaced
with the output of a user-provided script, which is called by nsxiv whenever an
image gets loaded. The path of this script is
.I $XDG_CONFIG_HOME/nsxiv/exec/image-info
and the arguments given to it are: 1) path to image file, 2) image width,
3) image height.
.P
There is also an example script installed together with nsxiv as
.IR PREFIX/share/nsxiv/exec/image-info .
.SH EXTERNAL KEY HANDLER
Additional external keyboard commands can be defined using a handler program
located in
.IR $XDG_CONFIG_HOME/nsxiv/exec/key-handler .
The handler is invoked by pressing
.BR Ctrl-x .
The next key combo is passed as its first argument. Passed via stdin are the
images to act upon, one path per line: all marked images, if in thumbnail mode
and at least one image has been marked, otherwise the current image.
nsxiv(1) will block until the handler terminates. It then checks which images
have been modified and reloads them.

The key combo argument has the following form: "[C-][M-][S-]KEY",
where C/M/S indicate Ctrl/Meta(Alt)/Shift modifier states and KEY is the X
keysym as listed in /usr/include/X11/keysymdef.h without the "XK_" prefix.

There is also an example script installed together with nsxiv as
.IR PREFIX/share/nsxiv/exec/key-handler .
.SH THUMBNAIL CACHING
nsxiv stores all thumbnails under
.IR $XDG_CACHE_HOME/nsxiv/ .
.P
Use the command line option
.I \-c
to remove all orphaned cache files. Additionally, run the following command
afterwards inside the cache directory to remove empty subdirectories:
.P
.RS
find . \-depth \-type d \-empty ! \-name '.' \-exec rmdir {} \\;
.RE
.SH ORIGINAL AUTHOR
.EX
Bert Muennich          <ber.t at posteo.de>
.EE
.SH CURRENT MAINTAINERS
.EX
Anupam Ashish Minz 
Berke Kocaoğlu         <berke.kocaoglu at metu.edu.tr>
Guilherme Freire
Kian Kasad             <kian at kasad.com>
N-R-K                  <nrk at disroot.org>
Stein Gunnar Bakkeby   <bakkeby at gmail.com>
TAAPArthur             <taaparthur at gmail.com>
explosion-mental       <explosion0mental at gmail.com>
eylles                 <ed.ylles1997 at gmail.com>
qsmodo
.EE
.SH CONTRIBUTORS
.EX
Bastien Dejean         <nihilhill at gmail.com>
Dave Reisner           <d at falconindy.com>
Fung SzeTat            <sthorde at gmail.com>
Max Voit               <mvdev at with-eyes.net>

For additional contributors, run `git shortlog -s` in the nsxiv repository.
.EE
.SH HOMEPAGE
.EX
https://github.com/nsxiv/nsxiv
.EE
.SH SEE ALSO
.BR X (7),
.BR xrdb (1)