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This commit makes use of a common function for all template parsing and page
writing. The behaviour is controlled by the "item" argument passed in. This
allows us to have a single code that generates code for list of items as well
as for a single item. In the future, this can be used for e.g. combining
thumbnails and large images on the same page.
Other than that this commit also brings several other changes:
- further clarification of theming setup XML file
- <protected_thumbnail> tag has been moved out of the <album> structure into
the <index> structure where it functionally belongs. Only whole albums can
be protected and the substitute thumbnail is displayed on index pages.
- position marker format has been broken out to a constant
- added few more FIXMEs to mark places that will change soon
- some template variables have been renamed
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This change makes thumbnail image sizes more flexible by explicitly
stating the particular image size is a thumbnail. And each thumbnail
image size can have different squared settings.
On the theme side it's now mandatory to specify which thumbnail size
to use (if applicable). This allows us to have different thumbnail styles
for index and album pages.
This commit also removes the <squared_thumbnails> tag from setup.xml
file but retains fallback for ver. 1 setup.xml files.
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Although probably not very common scenario, let's be consistent across
all defined image sizes and clearly state that an explicitly supplied
image file for an optional image size should carry the tag in order
not to get resized.
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Adding notes mostly about legacy features.
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This commit makes setup files (setup.xml and referenced design
setup xml file) versioned and adds checks for correct versions.
If a newer versioned file is detected, warning is printed out
in assumption that a stray cgg version is used.
If the version information is missing or is lower than expected
version, files are read in legacy mode. Some values are left
on defaults and missing mandatory values are either read from
renamed keys or made up to suit current requirements.
This essentially brings back compatibility with old setup.xml
files that are usually part of galleries.
However, some values are hardcoded and should be kept in mind
to update and test the legacy mode along with future enhancements.
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This change allows greater flexibility for separate themes.
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This is very basic scripting support - simple value retrieval and
block conditionals. Defines could be either static from theme setup
or programatically added during page generation.
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This extends current templating system to another dimension,
bringing the possibility to have multiple themes generated
at once. The purpose is to be able to switch between multiple
designs, from PC to mobile, classic vs. flat view, slideshow, etc.
For the moment, only the classic theme is available.
Rules:
* for switching between themes, place a link inside your template
manually - it's not a cgg concern, only your theming infrastructure
* don't forget to define different file names for index and album
pages across different themes
* it's recommended to keep default theme named as "index.*" to avoid
showing directory listing on webserver
Notes:
* some TODOs will be fixed when we have new theme using these advanced
features (e.g. pictures in album pages)
* TODO: introduce tag/block conditional system, allow custom user
defines for each theme/page
* TODO: deprecate <show_go_up>, <show_exif_table> and <border style>
in favor of conditionals (these tags belong to theming)
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