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imv - X11/Wayland Image Viewer
==============================

`imv` is a command line image viewer intended for use with tiling window managers.

Features
--------

* Wayland Support
* Support for over 30 different image file formats including:
  * Photoshop PSD files
  * Animated GIFS
  * Various RAW formats

Usage
-----

### Opening images
    imv image1.png another_image.jpeg yet_another.TIFF

### Opening images via stdin
    find . "*.png" | imv

### Open an image fullscreen
    imv -f image.jpeg

### Viewing images in a random order
    find . "*.png" | shuf | imv

### Viewing images from stdin
    curl http://somesi.te/img.png | imv -

### Image picker
imv can be used to select images in a pipeline by using the `p` hotkey to print
the current image's path to stdout. The `-l` flag can also be used to tell imv
to list the remaining paths on exit for a "open set of images, close unwanted
ones with `x`, then quit imv to pass the remaining images through" workflow.

#### Picking a wallpaper
    custom-set-wallpaper-script "$(find ./wallpaper -type f -name '*.jpg' | imv | tail -n1)"

#### Deleting unwanted images
    find -type f -name '*.jpg' | imv | xargs rm -v

#### Choosing pictures to email
    find ./holiday_pics -type f -name '*.jpg' | imv | xargs cp -t ~/outbox

#### Viewing images from the web
    curl -Osw '%{filename_effective}\n' 'http://www.example.com/[1-10].jpg' | imv

### Slideshow

imv can be used to display slideshows. You can set the number of seconds to
show each image for with the `-t` option at start up, or you can configure it
at runtime using the `t` and `T` hotkeys to increase and decrease the image
display time, respectively.

To cycle through a folder of pictures, showing each one for 10 seconds:

    imv -t 10 ~/Pictures/London

The `-x` switch can be used to exit imv after the last picture instead of
cycling through the list.

Installation
------------

`imv` depends on `pthreads`, `FontConfig`, `SDL2`, `SDL_TTF`, and `FreeImage`.

    $ make
    # make install

Macro `PREFIX` controls installation prefix.  If more control over installation
paths is required, macros `BINPREFIX`, `MANPREFIX` and `DATAPREFIX` are
available.  Eg. to install `imv` to home directory, run:

    $ BINPREFIX=~/bin PREFIX=~/.local make install

In case something goes wrong during installation process you may use verbose
mode to inspect commands issued by make:

    $ V=1 make

Tests
-----

`imv` has a work-in-progress test suite. The test suite requires `cmocka`.

    $ make check

License
-------
`imv` is published under the [GPLv2](LICENSE) license.