151 lines
6.6 KiB
Markdown
151 lines
6.6 KiB
Markdown
[[!template id=plugin name=album author="[[Simon_McVittie|smcv]]"]]
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[[!tag type/chrome]]
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This plugin provides the [[ikiwiki/directive/album]] [[ikiwiki/directive]],
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which turns a page into a photo album or image gallery, containing all
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images attached to the album or its subpages. It also provides the
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[[ikiwiki/directive/albumsection]] and [[ikiwiki/directive/albumimage]]
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directives.
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This plugin automatically enables the [[filecheck]], [[img]], [[inline]],
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[[trail]] and [[transient]] plugins. The [[meta]] plugin is also
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recommended.
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## Demo
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* [HTML page of thumbnails](http://ikialbum.hosted.pseudorandom.co.uk/album/)
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as an entry point to the album
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* Each thumbnail links to
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[a "viewer" HTML page](http://ikialbum.hosted.pseudorandom.co.uk/album/img_0120/)
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with a full size image, optional next/previous thumbnail links, and
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optional [[plugins/comments]]
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### Altered Demo
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[[!template id=gitbranch branch=cbaines/album]]
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This uses the album plugin, with some altered css, and with the css applied to
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all of the themes.
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* [Simple album, rendered using mutiple themes](http://cbaines.net/projects/ikiwiki/album/dest/basic)
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using the ikiwiki logo.
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## Installation
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[[!template id=gitbranch branch=smcv/album5 author="[[Simon_McVittie|smcv]]"]]
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Available from [[smcv]]'s git repository, in the `album5` branch.
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I've called it `album` to distinguish it from
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[[contrib/gallery|plugins/contrib/gallery]], although `gallery` might well be
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a better name for this functionality.
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(The Summer of Code [[plugins/contrib/gallery]] plugin does the
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next/previous UI in Javascript using Lightbox, which means that
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individual photos can't be bookmarked in a meaningful way, and
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the best it can do as a fallback for non-Javascript browsers
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is to provide a direct link to the image.)
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Updated, June 2014: integrated changes from [[KathrynAndersen]],
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Lukas Lipavsky and kjs
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### Manual installation
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First, you need a version of ikiwiki with the [[trail]] plugin merged in
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(version 3.20120203 or later).
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Manual installation requires these files (use the "raw" link in gitweb
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to download):
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* [album.pm](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/album5:/IkiWiki/Plugin/album.pm)
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in an `IkiWiki/Plugin` subdirectory of your configured `plugindir`
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* [albumviewer.tmpl](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/album5:/templates/albumviewer.tmpl),
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[albumitem.tmpl](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/album5:/templates/albumitem.tmpl),
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[albumnext.tmpl](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/album5:/templates/albumnext.tmpl) and
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[albumprev.tmpl](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/album5:/templates/albumprev.tmpl),
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in your configured `templatedir`, or a `templates` subdirectory of your wiki repository
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* the album-related bits from the end of the
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[stylesheet](http://git.pseudorandom.co.uk/smcv/ikiwiki.git/blob/album5:/doc/style.css)
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(put them in your local.css)
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## Changing the templates
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When a viewer page is generated or inlined into an album, the template can
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contain these extra variables:
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* `<TMPL_VAR ALBUM>` - page name of the album
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* `<TMPL_VAR ALBUMURL>` - relative URL to the album
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* `<TMPL_VAR ALBUMTITLE>` - title of the album, usually taken from
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a [[ikiwiki/directive/meta]] directive
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* `<TMPL_VAR CAPTION>` - caption for the image
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* `<TMPL_VAR THUMBNAIL>` - a small [[ikiwiki/directive/img]] for the image
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* `<TMPL_VAR IMAGEWIDTH>` - width of the full-size image in pixels
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* `<TMPL_VAR IMAGEHEIGHT>` - height of the full-size image in pixels
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* `<TMPL_VAR IMAGEFILESIZE>` - size of the image, e.g. `1.2 MiB`
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* `<TMPL_VAR IMAGEFORMAT>` - format of the image, typically `JPEG`
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The template for the viewer page can also contain:
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* `<TMPL_VAR IMG>` - a large [[ikiwiki/directive/img]] to display the image
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* `<TMPL_VAR PREV>` - a link to the previous viewer, typically with a
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thumbnail
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* `<TMPL_VAR NEXT>` - a link to the next viewer, typically with a
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thumbnail
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## Including album entries elsewhere
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To display images from elsewhere in the wiki with the same appearance as
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an [[ikiwiki/directive/album]] or [[ikiwiki/directive/albumsection]],
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you can use an [[ikiwiki/directive/inline]] with the `albumitem`
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template:
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\[[!inline pages="..." sort="-age" template="albumitem"]]
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## Bugs
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* There's currently a hard-coded list of extensions that are treated as
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images: `png`, `gif`, `jpg`, `jpeg` or `mov` files. More image and video
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types could be added in future.
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* Videos aren't currently handled very well; ideally, something like
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totem-video-thumbnailer would be used.
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* The plugin doesn't do anything special to handle albums that are subpages
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of each other. If, say, `debconf` and `debconf/monday` are both albums,
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then `debconf/monday/p100.jpg` will currently be assigned to one or the
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other, arbitrarily. It should probably pick the closest (longest) album name.
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(I'm not sure that it can do this reliably, though, since the scan stage
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runs in an undefined order.)
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* The plugin doesn't do anything special to handle photos with similar names.
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If you have `p100.jpg` and `p100.png`, one will get a viewer page called
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`p100` and the other will be ignored. (I'm not sure what we could do better,
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though.)
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* If there's no `albumimage` in a viewer page, one should probably be appended
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automatically.
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## TODO
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* The generated viewer page should extract as much metadata as possible from
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the photo's EXIF tags (creation/modification dates, author, title, caption,
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copyright). [[smcv]] once had a half-written implementation which runs
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`scanimage` hooks, and an `exiftool` plugin using [[!cpan Image::ExifTool]]
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as a reference implementation of that hook, but has lost that code somewhere :-(
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* There should be an option to reduce the size of photos and write them into
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an underlay (perhaps just the transient underlay), for this workflow:
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* your laptop's local ikiwiki has two underlays, `photos` and `webphotos`
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* `photos` contains full resolution photos with EXIF tags
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* for each photo that exists in `photos` but not in `webphotos`, the album
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plugin automatically resamples it down to a web-compatible resolution
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([[smcv]] uses up to 640x640), optimizes it with `jpegoptim`, strips out
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all EXIF tags, and and writes it into the corresponding location
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in `webphotos`
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* `webphotos` is what you rsync to the web server
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* the web server's ikiwiki only has `webphotos` as an underlay
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* Eventually, there could be a specialized CGI user interface to batch-edit
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all the photos of an album (so for each photo, you get an edit box each for
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title, author, copyright etc.) - this would work by making programmatic
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edits to all the `albumimage` directives.
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