nsxiv/README.md

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![nsxiv](https://raw.githubusercontent.com/nsxiv/nsxiv/gh-pages/img/logo.png "nsxiv")
**Neo (or New or Not) Simple (or Small or Suckless) X Image Viewer**
--------------------------------------------------------------------
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nsxiv is a fork of now unmaintained [sxiv](https://github.com/muennich/sxiv)
with the purpose of maintaining it and adding simple, sensible features.
nsxiv is free software licensed under GPLv2 and aims to be easy to modify and customize.
Please file a bug report if something does not work as documented or
expected in *this* repository, after making sure you are using the latest
release of nsxiv. Contributions are welcome, see [CONTRIBUTING.md](CONTRIBUTING.md)
for details.
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Features
--------
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* 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
* Play GIF animations
* Display image information in status bar
* Display image name/path in X title
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Screenshots
-----------
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**Image mode: (Default colors)**
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![Image](https://raw.githubusercontent.com/nsxiv/nsxiv/gh-pages/img/image.png "Image mode")
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**Thumbnail mode: (Custom colors)**
![Thumb](https://raw.githubusercontent.com/nsxiv/nsxiv/gh-pages/img/thumb.png "Thumb mode")
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Dependencies
------------
nsxiv requires the following software to be installed:
* Imlib2
* X11
* Xft
* freetype2
* fontconfig
The following libraries are optional. They are automatically enabled if installed.
* giflib : Used for animated gif playback.
* libexif : Used for auto-orientation and exif thumbnails.
* libwebp : Used for animated webp playback.
Please make sure to install the corresponding development packages in case that
you want to build nsxiv on a distribution with separate runtime and development
packages (e.g. \*-dev on Debian).
Building
--------
nsxiv is built using the commands:
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$ make
Rework the build system (#19) * Added simple configure script Added simple script to autodetect if optional dependencies are installed and enable/disable them as needed. Note this solution uses the compiler directly instead of an external program like pkgconfig so it doesn't require any extra dependencies. It is intended to work with any arbitrary compiler; it has been tested with tcc and gcc. There are some "breaking" changes hidden here - HAVE_GIFLIB was renamed to HAVE_LIBGIF to match HAVE_LIBEXIF - Simply typing `make` will no longer try to build with optional dependencies * use implicit RM variable * General clean-up in configure - Use printf instead of echo - Format style * honor env PREFIX, use LDLIBS * Revert "General clean-up in configure" This reverts commit 8683c179dbf273a330f9a224a4d481a7bea42c5f. * honor env LDFLAGS if set * Don't set OPTIONAL_LIBS in configure * make OBJ all caps * follow suckless style build system - remove configure script. - HAVE_LIBGIF and HAVE_LIBEXIF defaults back to 1 - unload several varibales onto config.mk - make version all-caps - add -O2 optimization - use CPPFLAGS for includes and defines * Revert "follow suckless style build system" This reverts commit 8bf75b1f68d72df349edba8d998d4659dd956dd8. * Generate config.mk from make * Inlined configure in Makefile * update docs * cleanups - changes to config.mk should trigger a rebuild - remove potentially confusing variables form Makefile * Use install instead of mkdir/cp/chmod when sensible * fixup! Inlined configure in Makefile * Don't generate config.mk on rm -f *.o sxiv * update docs and cleanups - make config.mk silent - mention editing config.mk in README * fallback to 0 if user edits config.mk in unexpected way * add comment on config.mk * remove invalid comment configure script is removed * slight restructure - make version all caps - restructure variables that users may want to edit to top - use CPPFLAGS for defines - add some comments - remove needless echos since we have verbose output now * add echos back Co-authored-by: NRK <nrk@disroot.org> Co-authored-by: Berke Kocaoğlu <berke.kocaoglu@metu.edu.tr>
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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
Rework the build system (#19) * Added simple configure script Added simple script to autodetect if optional dependencies are installed and enable/disable them as needed. Note this solution uses the compiler directly instead of an external program like pkgconfig so it doesn't require any extra dependencies. It is intended to work with any arbitrary compiler; it has been tested with tcc and gcc. There are some "breaking" changes hidden here - HAVE_GIFLIB was renamed to HAVE_LIBGIF to match HAVE_LIBEXIF - Simply typing `make` will no longer try to build with optional dependencies * use implicit RM variable * General clean-up in configure - Use printf instead of echo - Format style * honor env PREFIX, use LDLIBS * Revert "General clean-up in configure" This reverts commit 8683c179dbf273a330f9a224a4d481a7bea42c5f. * honor env LDFLAGS if set * Don't set OPTIONAL_LIBS in configure * make OBJ all caps * follow suckless style build system - remove configure script. - HAVE_LIBGIF and HAVE_LIBEXIF defaults back to 1 - unload several varibales onto config.mk - make version all-caps - add -O2 optimization - use CPPFLAGS for includes and defines * Revert "follow suckless style build system" This reverts commit 8bf75b1f68d72df349edba8d998d4659dd956dd8. * Generate config.mk from make * Inlined configure in Makefile * update docs * cleanups - changes to config.mk should trigger a rebuild - remove potentially confusing variables form Makefile * Use install instead of mkdir/cp/chmod when sensible * fixup! Inlined configure in Makefile * Don't generate config.mk on rm -f *.o sxiv * update docs and cleanups - make config.mk silent - mention editing config.mk in README * fallback to 0 if user edits config.mk in unexpected way * add comment on config.mk * remove invalid comment configure script is removed * slight restructure - make version all caps - restructure variables that users may want to edit to top - use CPPFLAGS for defines - add some comments - remove needless echos since we have verbose output now * add echos back Co-authored-by: NRK <nrk@disroot.org> Co-authored-by: Berke Kocaoğlu <berke.kocaoglu@metu.edu.tr>
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will always disable libgif.
Alternatively, they can be disabled via editing `config.mk`.
Installing nsxiv:
# make install
Installing desktop entry:
# make install-desktop
Installing icons:
# make install-icon
Installing all of the above:
# make install-all
Please note, that these requires root privileges.
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By default, nsxiv is installed using the prefix `/usr/local`, so the full path
of the executable will be `/usr/local/bin/nsxiv`, the `.desktop` entry will be
`/usr/local/share/applications/nsxiv.desktop` and the icon path will be
`/usr/local/share/icons/hicolor/{size}/apps/nsxiv.png`.
You can install nsxiv into a directory of your choice by changing this command to:
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$ make PREFIX="/your/dir" install
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Example scripts are installed using `DOCPREFIX` which defaults to
`/usr/local/share/doc/nsxiv`. You can change `DOCPREFIX` the same way you can
change `PREFIX` shown above.
The build-time specific settings of nsxiv can be found in the file *config.h*.
Please check and change them, so that they fit your needs.
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If the file *config.h* does not already exist, then you have to create it with
the following command:
$ make config.h
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Usage
-----
Please see man page for information on how to use nsxiv. To do so, execute the
following after the installation:
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$ man nsxiv
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F.A.Q
-----
* Can I open remote urls with nsxiv? <br>
Yes, see [nsxiv-url](https://github.com/nsxiv/nsxiv/wiki/nsxiv-url)
* Can I open all the images in a directory? <br>
Yes, see [nsxiv-rifle](https://github.com/nsxiv/nsxiv/wiki/nsxiv-rifle)
* Can I set default arguments for nsxiv? <br>
Yes, see [nsxiv-env](https://github.com/nsxiv/nsxiv/wiki/nsxiv-env)
* Can I pipe images into nsxiv? <br>
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No, not yet. See [#32](https://github.com/nsxiv/nsxiv/issues/32)
Download
--------
You can [browse](https://github.com/nsxiv/nsxiv) the source code repository
on GitHub or get a copy using git with the following command:
$ git clone https://github.com/nsxiv/nsxiv.git
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You can view the changelog [here](CHANGELOG.md)