243 lines
7.9 KiB
PHP
243 lines
7.9 KiB
PHP
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<?php namespace ProcessWire;
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/**
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* ProcessWire Pageimages
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*
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* #pw-summary Pageimages are a type of WireArray containing Pageimage objects. They represent the value of multi-image field in ProcessWire.
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*
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* #pw-body =
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* Most of the methods you are likely to use are inherited from `Pagefiles` and `WireArray` so be sure to take a look at those as well.
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* Pageimages is dedicated to containing `Pageimage` objects.
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*
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* ~~~~~
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* // Example of outputting a thumbnail gallery of Pageimage objects
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* foreach($page->images as $image) {
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* // $page->images is a Pageimages object
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* // $image and $thumb are both Pageimage objects
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* $thumb = $image->size(200, 200);
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* echo "<a href='$image->url'>";
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* echo "<img src='$thumb->url' alt='$image->description' />";
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* echo "</a>";
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* }
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* ~~~~~
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* #pw-body
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*
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* Typically a Pageimages object will be associated with a specific field attached to a Page.
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* There may be multiple instances of Pageimages attached to a given Page (depending on what fields are in it's fieldgroup).
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*
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* ProcessWire 3.x, Copyright 2019 by Ryan Cramer
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* https://processwire.com
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*
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* @method string render($markup = '', $options = array())
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*
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*/
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class Pageimages extends Pagefiles {
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/**
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* Per the WireArray interface, items must be of type Pagefile
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*
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* #pw-internal
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*
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* @param mixed $item
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* @return bool
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*
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*/
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public function isValidItem($item) {
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return $item instanceof Pageimage;
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}
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/**
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* Add a new Pageimage item, or create one from given filename and add it.
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*
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* @param Pageimage|string $item If item is a string (filename) then the Pageimage instance will be created automatically.
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* @return Pageimages|Pagefiles
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*
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*/
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public function add($item) {
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if(is_string($item)) $item = $this->wire(new Pageimage($this, $item));
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return parent::add($item);
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}
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/**
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* Per the WireArray interface, return a blank Pageimage
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*
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* #pw-internal
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*
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*/
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public function makeBlankItem() {
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return $this->wire(new Pageimage($this, ''));
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}
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/**
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* Does this field have the given file name? If so, return it, if not return null.
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*
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* @param string $name Basename is assumed
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* @return null|Pagefile|Pageimage Returns Pagefile object if found, null if not
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*
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*/
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public function getFile($name) {
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$hasFile = parent::getFile($name);
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if($hasFile) return $hasFile;
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// populate $base with $name sans ImageSizer info and extension
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$name = basename($name);
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$pos = strpos($name, '.');
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$base = substr($name, 0, $pos);
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foreach($this as $pagefile) {
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if(strpos($pagefile->basename, $base) !== 0) continue;
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// they start the same, is it a variation?
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if(!$pagefile->isVariation($name)) continue;
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// if we are here we found a variation
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$hasFile = $pagefile;
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break;
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}
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return $hasFile;
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}
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/**
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* Get an array of all image variations on this field indexed by original file name.
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*
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* More information on any variation filename can be retrieved from `Pageimage::isVariation()`.
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*
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* ~~~~~
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* $variations = $page->images->getAllVariations();
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* print_r($variations);
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* // Example output:
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* // array(
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* // 'foo.jpg' => array(
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* // 'foo.100x100.jpg',
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* // 'foo.200x200.jpg'
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* // ),
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* // 'bar.jpg' => array(
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* // 'bar.300x300.jpg'
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* // )
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* // );
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* ~~~~~
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*
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* @return array Array indexed by file name, each containing array of variation file names
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* @see Pageimage::isVariation()
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*
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*/
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public function getAllVariations() {
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$variations = array();
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$extensions = array();
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$basenames = array();
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foreach($this as $pageimage) {
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$name = $pageimage->basename;
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$ext = $pageimage->ext;
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$extensions[$name] = $ext;
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$basenames[$name] = basename($name, ".$ext");
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$variations[$name] = array();
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}
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foreach(new \DirectoryIterator($this->path()) as $file) {
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if($file->isDir() || $file->isDot()) continue;
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$_ext = $file->getExtension();
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$_name = $file->getBasename();
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$_base = basename($_name, ".$_ext");
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foreach($variations as $name => $unused) {
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// if filenames match then it's an original, not a variation
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if($name === $_name) continue;
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// if files don't share same extension, skip
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$ext = $extensions[$name];
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if($ext != $_ext) continue;
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// if files don't start the same, it's not a variation
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$base = $basenames[$name];
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if(strpos($_base, $base) !== 0) continue;
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// if the part up to the first period isn't the same, then it's not a variation
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$test1 = substr($name, 0, strpos($name, '.'));
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$test2 = substr($_name, 0, strpos($_name, '.'));
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if($test1 !== $test2) continue;
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// if we reach this point, we've found a variation
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$variations[$name][] = $_name;
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}
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}
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return $variations;
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}
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/**
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* Render markup for all images here (optionally using a provided markup template string and/or image size options)
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*
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* Given template string can contain any of the placeholders, which will be replaced:
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* - `{url}` or `{src}` Image URL (typically used for src attribute)
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* - `{httpUrl}` File URL with scheme and hostname (alternate for src attribute)
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* - `{URL}` Same as url but with cache busting query string
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* - `{HTTPURL}` Same as httpUrl but with cache busting query string
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* - `{description}` or `{alt}` Image description (typically used in alt attribute)
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* - `{tags}` File tags (might be useful in class attribute)
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* - `{width}` Width of image
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* - `{height}` Height of image
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* - `{hidpiWidth}` HiDPI width of image
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* - `{hidpiHeight}` HiDPI height of image
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* - `{ext}` File extension
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* - `{original.name}` Replace “name” with any of the properties above to refer to original/full-size image.
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* If there is no original image then these just refer back to the current image.
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*
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* ~~~~~
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* // default output
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* echo $page->images->render();
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*
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* // custom output
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* echo $page->images->render("<img class='pw-image' src='{url}' alt='{alt}'>");
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*
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* // custom output with options
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* echo $page->images->render("<img src='{url}' alt='{alt}'>", [ 'width' => 300 ]);
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*
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* // options can go in first argument if you prefer
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* echo $page->images->render([ 'width' => 300, 'height' => 200 ]);
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*
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* // if only width/height are needed, they can also be specified as a string (1st or 2nd arg)
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* echo $page->images->render('300x200');
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*
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* // custom output with link to original/full-size and square crop of 300x300 for thumbnails
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* echo "<ul>" . $page->images->render([
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* 'markup' => "<li><a href='{original.url}'><img src='{url}' alt='{alt}'></a></li>",
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* 'width' => 300,
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* 'height' => 300
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* ]) . "</ul>";
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* ~~~~~
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*
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* @param string|array $markup Markup template string or optional $options array if you do not want the template string here.
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* @param array|string $options Optionally resize image with these options sent to size() method:
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* - `width` (int): Target width or 0 for current image size (or proportional if height specified).
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* - `height` (int): Target height or 0 for current image size (or proportional if width specified).
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* - `markup` (string): Markup template string (same as $markup argument), or omit for default (same as $markup argument).
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* - `link` (bool): Link image to original size? Though you may prefer to do this with your own $markup (see examples). (default=false)
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* - `limit` (int): Render no more than this many images (default=0, no limit).
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* - Plus any option available to the $options argument on the `Pageimage::size()` method.
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* - If you only need width and/or height, you can specify a width x height string, i.e. 123x456 (use 0 for proportional).
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* @return string
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* @since 3.0.126
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*
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*/
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public function ___render($markup = '', $options = array()) {
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$out = '';
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$limit = 0;
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$n = 0;
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if(isset($options['limit'])) {
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$limit = (int) $options['limit'];
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unset($options['limit']);
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}
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foreach($this as $image) {
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$out .= $image->render($markup, $options);
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if($limit > 0 && ++$n >= $limit) break;
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}
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return $out;
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}
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}
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