nsxiv/README.md

![sxiv](http://muennich.github.com/sxiv/img/logo.png "sxiv")

**Simple X Image Viewer**

The sole purpose of sxiv is to be the perfect image viewer for me. It is free
software so that you can use it and modify it for your needs. Please file a bug
report if something does not work as documented or expected. Contributions are
welcome but there is no guarantee that they will be incorporated.


Features
--------

* Basic image operations, e.g. zooming, panning, rotating
* Customizable key and mouse button mappings (in *config.h*)
* Thumbnail mode: grid of selectable previews of all images
* Ability to cache thumbnails for fast re-loading
* Basic support for multi-frame images
* Load all frames from GIF files and play GIF animations
* Display image information in status bar


Screenshots
-----------

**Image mode:**

![Image](http://muennich.github.com/sxiv/img/image.png "Image mode")

**Thumbnail mode:**

![Thumb](http://muennich.github.com/sxiv/img/thumb.png "Thumb mode")


Dependencies
------------

sxiv requires the following software to be installed:

  * Imlib2
  * X11
  * Xft
  * freetype2
  * fontconfig
  * giflib (optional, automatically enabled if installed)
  * libexif (optional, automatically enabled if installed)

Please make sure to install the corresponding development packages in case that
you want to build sxiv on a distribution with separate runtime and development
packages (e.g. *-dev on Debian).


Building
--------

sxiv is built using the commands:

    $ make
    # make install

Please note, that the latter one requires root privileges.
By default, sxiv is installed using the prefix "/usr/local", so the full path
of the executable will be "/usr/local/bin/sxiv".

Running make will automatically detect if libexif and libgif are available and
enable them if so. CLI arguments will override any automatic detection.
For example:

	$ make HAVE_LIBGIF=0

will always disable libgif.
Alternatively, they can be disabled via editing `config.mk`.

You can install sxiv into a directory of your choice by changing the second
command to:

    # make PREFIX="/your/dir" install

The build-time specific settings of sxiv can be found in the file *config.h*.
Please check and change them, so that they fit your needs.
If the file *config.h* does not already exist, then you have to create it with
the following command:

    $ make config.h


Usage
-----

Please see the [man page](http://muennich.github.com/sxiv/sxiv.1.html) for
information on how to use sxiv.


Download & Changelog
--------------------

You can [browse](https://github.com/muennich/sxiv) the source code repository
on GitHub or get a copy using git with the following command:

    git clone https://github.com/muennich/sxiv.git

**Stable releases**

**[v26](https://github.com/muennich/sxiv/archive/v26.tar.gz)**
*(January 16, 2020)*

  * Maintenance release

**[v25](https://github.com/muennich/sxiv/archive/v25.tar.gz)**
*(January 26, 2019)*

  * Support font fallback for missing glyphs
  * Fix busy loop when built without inotify
  * Use background/foreground colors from X resource database

**[v24](https://github.com/muennich/sxiv/archive/v24.tar.gz)**
*(October 27, 2017)*

  * Automatically reload the current image whenever it changes
  * Support embedding into other X windows with -e (e.g. tabbed)
  * New option -p prevents sxiv from creating cache and temporary files
  * Simpler mouse mappings, the most basic features are accessible with the
    mouse only (navigate, zoom, pan)

**[v1.3.2](https://github.com/muennich/sxiv/archive/v1.3.2.tar.gz)**
*(December 20, 2015)*

  * external key handler gets file paths on stdin, not as arguments
  * Cache out-of-view thumbnails in the background
  * Apply gamma correction to thumbnails

**[v1.3.1](https://github.com/muennich/sxiv/archive/v1.3.1.tar.gz)**
*(November 16, 2014)*

  * Fixed build error, caused by delayed config.h creation
  * Fixed segfault when run with -c

**[v1.3](https://github.com/muennich/sxiv/archive/v1.3.tar.gz)**
*(October 24, 2014)*

  * Extract thumbnails from EXIF tags (requires libexif)
  * Zoomable thumbnails, supported sizes defined in config.h
  * Fixed build error with giflib version >= 5.1.0

**[v1.2](https://github.com/muennich/sxiv/archive/v1.2.tar.gz)**
*(April 24, 2014)*

  * Added external key handler, called on keys prefixed with `Ctrl-x`
  * New keybinding `{`/`}` to change gamma (by András Mohari)
  * Support for slideshows, enabled with `-S` option & toggled with `s`
  * Added application icon (created by 0ion9)
  * Checkerboard background for alpha layer
  * Option `-o` only prints files marked with `m` key
  * Fixed rotation/flipping of multi-frame images (gifs)

**[v1.1.1](https://github.com/muennich/sxiv/archive/v1.1.1.tar.gz)**
*(June 2, 2013)*

  * Various bug fixes

**[v1.1](https://github.com/muennich/sxiv/archive/v1.1.tar.gz)**
*(March 30, 2013)*

  * Added status bar on bottom of window with customizable content
  * New keyboard shortcuts `\`/`|`: flip image vertically/horizontally
  * New keyboard shortcut `Ctrl-6`: go to last/alternate image
  * Added own EXIF orientation handling, removed dependency on libexif
  * Fixed various bugs

**[v1.0](https://github.com/muennich/sxiv/archive/v1.0.tar.gz)**
*(October 31, 2011)*

  * Support for multi-frame images & GIF animations
  * POSIX compliant (IEEE Std 1003.1-2001)

**[v0.9](https://github.com/muennich/sxiv/archive/v0.9.tar.gz)**
*(August 17, 2011)*

  * Made key and mouse mappings fully configurable in config.h
  * Complete code refactoring

**[v0.8.2](https://github.com/muennich/sxiv/archive/v0.8.2.tar.gz)**
*(June 29, 2011)*

  * POSIX-compliant Makefile; compiles under NetBSD

**[v0.8.1](https://github.com/muennich/sxiv/archive/v0.8.1.tar.gz)**
*(May 8, 2011)*

  * Fixed fullscreen under window managers, which are not fully EWMH-compliant

**[v0.8](https://github.com/muennich/sxiv/archive/v0.8.tar.gz)**
*(April 18, 2011)*

  * Support for thumbnail caching
  * Ability to run external commands (e.g. jpegtran, convert) on current image

**[v0.7](https://github.com/muennich/sxiv/archive/v0.7.tar.gz)**
*(February 26, 2011)*

  * Sort directory entries when using `-r` command line option
  * Hide cursor in image mode
  * Full functional thumbnail mode, use Return key to switch between image and
    thumbnail mode

**[v0.6](https://github.com/muennich/sxiv/archive/v0.6.tar.gz)**
*(February 16, 2011)*

  * Bug fix: Correctly display filenames with umlauts in window title
  * Basic support of thumbnails

**[v0.5](https://github.com/muennich/sxiv/archive/v0.5.tar.gz)**
*(February 6, 2011)*

  * New command line option: `-r`: open all images in given directories
  * New key shortcuts: `w`: resize image to fit into window; `W`: resize window
    to fit to image

**[v0.4](https://github.com/muennich/sxiv/archive/v0.4.tar.gz)**
*(February 1, 2011)*

  * New command line option: `-F`, `-g`: use fixed window dimensions and apply
    a given window geometry
  * New key shortcut: `r`: reload current image

**[v0.3.1](https://github.com/muennich/sxiv/archive/v0.3.1.tar.gz)**
*(January 30, 2011)*

  * Bug fix: Do not set setuid bit on executable when using `make install`
  * Pan image with mouse while pressing middle mouse button

**[v0.3](https://github.com/muennich/sxiv/archive/v0.3.tar.gz)**
*(January 29, 2011)*

  * New command line options: `-d`, `-f`, `-p`, `-s`, `-v`, `-w`, `-Z`, `-z`
  * More mouse mappings: Go to next/previous image with left/right click,
    scroll image with mouse wheel (horizontally if Shift key is pressed),
    zoom image with mouse wheel if Ctrl key is pressed

**[v0.2](https://github.com/muennich/sxiv/archive/v0.2.tar.gz)**
*(January 23, 2011)*

  * Bug fix: Handle window resizes correctly
  * New keyboard shortcuts: `g`/`G`: go to first/last image; `[`/`]`: go 10
    images back/forward
  * Support for mouse wheel zooming (by Dave Reisner)
  * Added fullscreen mode

**[v0.1](https://github.com/muennich/sxiv/archive/v0.1.tar.gz)**
*(January 21, 2011)*

  * Initial release