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<?php
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/**
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* @file
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* Implimentation of a Page Layout Plugin for Adaptivetheme.
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*
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* This looks like a Panels layout plugin, but its not, its designed to work
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* only with AT pluggable layout sytem and provides a "page layout".
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*
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* This layout provide a standard three column layout. The "grail" refers to
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* the holy search for the ideal CSS only layout that occured in the late
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* 1990's/early 2000's. Yes, I was around back then and participated in that
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* grail quest.
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*
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* Usage:
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* The naming convetion here is very important, the function name must match the
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* method name and the array key. Do not add anything else to it. In the layout
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* function simply append "_layout", this gets called when the user submits the
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* theme settings form.
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*
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* TODO: allow form #states to be defined (UX issue).
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* Template loading is hard and not something I had considered because of one
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* simple fact - we need a mobile context to do this, otherwise its an all or
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* nothing approach - in otherwords if you change templates you must supply
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* an entire set of layout plugins that use this template.
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*/
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function three_col_grail() { // - function name must be identical to the method and the array key.
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$page_layout['three_col_grail'] = array( // - array key.
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'title' => t('Three Column Holy Grail'), // - title, needed for the UI.
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'category' => t('AT Core layout'), // - category, this could get used but is currently not, include something but its not critical.
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'method' => 'three_col_grail', // - method, this must match the function name and the key, definitly not optional!
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'type' => 'page_layout', // - type, tell the system this is a page_layout, not optional!
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'admin css' => 'three_col_grail.admin.css', // - admin css, optional, in AT Core three_col_grail.admin.css loads all the CSS for all layouts.
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'device_groups' => array( // - device_groups, define which device groups this layout can work with, can be one or more of:
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'bigscreen', // 'bigscreen', 'tablet_landscape', 'tablet_portrait', 'smalltouch_landscape'
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'tablet_landscape', // What you enter here will dictate the device groups it shows for in theme settings.
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),
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);
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return $page_layout;
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}
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/**
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* CSS Builder for the three_col_grail layout.
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* This does not have to be anything like this, but it must return a string of
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* CSS, thats about it, and only has 3 bits of data to work with that come
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* from the theme settings (what the user entered in the UI), of course you can
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* just make up your own data if that works for your layout, see the
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* one_col_stack for such an implimentation.
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*
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* Remember, if you are building a sub-theme you have full control over the
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* theme settings form via your sub-themes hook_form_system_theme_settings_alter()
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* in theme-settings.php
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*
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* @param $sidebar_first, an arbitary numeric value.
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* @param $sidebar_second, an arbitary numeric value.
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* @param $sidebar_unit, a value unit, one of px, em or %.
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*/
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function three_col_grail_layout($sidebar_first, $sidebar_second, $sidebar_unit) {
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// Set variables for language direction. In thoery a layout plugin could
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// be RTL compatible.
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$left = 'left';
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$right = 'right';
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// Set vars for your sidebars, this can be very different, and entirely
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// depends on your layout.
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$sidebar_second = $sidebar_second . $sidebar_unit;
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$sidebar_first = $sidebar_first . $sidebar_unit;
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// Define margins/negative margins if required, AT is a content source
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// ordered layout and uses a negative margin layout system.
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$push_right = $sidebar_second;
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$push_left = $sidebar_first;
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$pull_right = $sidebar_second;
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$styles = <<<EOF
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#content-column,.content-column,div.sidebar {float: left; clear: none}
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.two-sidebars .content-inner {margin-$left: $push_left; margin-$right: $push_right}
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.sidebar-first .content-inner {margin-$left: $push_left; margin-$right: 0}
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.sidebar-second .content-inner {margin-$right: $push_right; margin-$left: 0}
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.region-sidebar-first {width: $sidebar_first; margin-$left: -100%}
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.region-sidebar-second {width: $sidebar_second; margin-$left: -$pull_right}
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EOF;
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return $styles;
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}
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