Clean up thumbnail generation code

[bpgallery.git] / README

diff --git a/README b/README
index 6af9d164c9f82d8aa3e219bb397b7584794e4e1a..56579151dcff44aabfd04ddd7e366cf236ff1352 100644 (file)
--- a/README
+++ b/README
@@ -10,6 +10,7 @@ The ImageMagick tools (convert and identify)
 bash
 GNU find
 GNU xargs
+sed
 
 Installation
 ------------
@@ -19,8 +20,60 @@ Usage
 -----
 bpgallery.sh /path/to/image/files
 
+Also, the following files, if placed in the images directory, will be used to
+generate part of the index page:
+        description.txt - a simple text file containing paragraphs to go at the
+                          beginnings of the index page
+        captions.txt - filename<tab>caption style file, it'll add a caption to
+                       the images on the index page.
+The following environment variables can also be used:
+        TITLE - the title of the gallery
+        WIDTH - the width to make the icons
+
+Example Usage:
+        TITLE="My Funky Gallery" bpgallery.sh /path/to/image/files
+
+Themes
+------
+Theme support is very rudimentary, basically you create functions for each of the parts of the template, and put them in a file named the same as the theme. The functions that you need to declare are as follows:
+       bpgallery_ThemeName_head()
+               what's it for?:
+                       This sets up the header for the page, generally
+                       everything until the first picture. So, the title bar
+                       and any menus you would like to use
+               available variables:
+                       $TITLE       - the title for the index page
+       bpgallery_ThemeName_tail()
+               what's it for?:
+                       Closes the page, is the last thing to be printed.
+               available variables:
+                       None
+       bpgallery_ThemeName_description()
+               what's it for?:
+                       if there's a description set up (i.e. a description.txt
+                       file) then this is what it'll be wrapped in. It comes
+                       just after the _head.
+               available variables:
+                       $DESCRIPTION - the content of description.txt
+       bpgallery_ThemeName_stylesheet()
+               what's if for?:
+                       It generates the stylesheet for the page.
+               available variables:
+                       $WIDTH       - the width of the images
+                       $MAXHEIGHT   - the maximum height of the image
+       bpgallery_ThemeName_thumbsline()
+               what's it for?:
+                       Whatever is in here is generated per thumbnail.
+               available variables:
+                       $filename    - the name of the file
+                       $caption     - the caption as got from captions.txt
+
+If any of the functions are not defined in a theme then the default theme
+function will be used instead. The default theme is clean and simplistic, this
+is deliberate!
+
 Author
 ------
 Brett Parker:
-       e-mail: <iDunno@sommitrealweird.co.uk>
-       www:    http://www.sommitrealweird.co.uk/
+        e-mail: <iDunno@sommitrealweird.co.uk>
+        www:    http://www.sommitrealweird.co.uk/