Include support for imv-folder

This is a wrapper to open all images in a folder.

Includes:
- Script itself
- Man page
- Desktop file
- Necessary Makefile changes

Fix #223

doc/imv-folder.1.txt

@@ -0,0 +1,36 @@
+/////
+vim:set ts=4 sw=4 tw=82 noet:
+/////
+:quotes.~:
+
+imv (1)
+=======
+
+Name
+----
+imv-folder - Open 'imv' for all images in a folder
+
+Description
+-----------
+
+'imv-folder' is a wrapper for 'imv' that auto-selects the folder where the image is located, so that the *next* and *previous* commands function in the same way as other image viewers.
+
+Note that this wrapper supports only a single image. For opening multiple images, use plain `imv`.
+
+Synopsis
+--------
+'imv-folder' path
+
+Authors
+-------
+
+imv is written and maintained by Harry Jeffery <me@harry.pm>
+with contributions from other developers.
+
+Full source code and other information can be found at
+<https://github.com/eXeC64/imv>.
+
+See Also
+--------
+
+**imv**(1)

doc/imv.1.txt

@@ -330,4 +330,4 @@ Full source code and other information can be found at
 See Also
 --------
 
-**imv**(5) **imv-msg**(1)
+**imv**(5) **imv-msg**(1) **imv-folder**(1)

files/imv

@@ -1,5 +1,4 @@
 #!/bin/sh
-
 if [ -n "${WAYLAND_DISPLAY}" ]; then
   exec imv-wayland "$@"
 else

files/imv-folder

@@ -0,0 +1,3 @@
+#!/bin/sh
+image="$1"
+exec imv "$(dirname "$image")" -n "$image"

files/imv-folder.desktop

@@ -0,0 +1,14 @@
+[Desktop Entry]
+Name=imv-folder
+Name[en_US]=imv
+GenericName=Image viewer
+GenericName[en_US]=Image viewer
+Comment=Fast freeimage-based Image Viewer | Open all images on a folder
+Exec=imv-folder %f
+NoDisplay=true
+Terminal=false
+Type=Application
+Categories=Graphics;2DGraphics;Viewer;
+MimeType=image/bmp;image/gif;image/jpeg;image/jpg;image/pjpeg;image/png;image/tiff;image/x-bmp;image/x-pcx;image/x-png;image/x-portable-anymap;image/x-portable-bitmap;image/x-portable-graymap;image/x-portable-pixmap;image/x-tga;image/x-xbitmap;
+Icon=multimedia-photo-viewer
+Keywords=photo;picture;

meson.build

@@ -155,6 +155,12 @@ foreach ws : ['wayland', 'x11']
   endif
 endforeach
 
+install_data(
+  files('files/imv-folder'),
+  install_dir: get_option('bindir'),
+  install_mode: 'rwxr-xr-x',
+)
+
 if not target_single_ws
   install_data(
     files('files/imv'),
@@ -163,11 +169,13 @@ if not target_single_ws
   )
 endif
 
-install_data(
-  files('files/imv.desktop'),
-  install_dir: '@0@/applications'.format(get_option('datadir')),
-  install_mode: 'rw-r--r--',
-)
+foreach desktop: ['imv', 'imv-folder']
+  install_data(
+    files('files/@0@.desktop'.format(desktop)),
+    install_dir: '@0@/applications'.format(get_option('datadir')),
+    install_mode: 'rw-r--r--',
+  )
+endforeach
 
 install_data(
   files('files/imv_config'),
@@ -196,6 +204,7 @@ prog_a2x = find_program('a2x', required: get_option('man'))
 if prog_a2x.found()
   foreach man : [
     [1, 'imv'],
+    [1, 'imv-folder'],
     [1, 'imv-msg'],
     [5, 'imv'],
   ]