/**
* Return some context files describing media for IxIF.
*
* @todo This is not used currently: the Wellcome uris are kept because they
* are set for main purposes in the UniversalViewer.
* @link https://gist.github.com/tomcrane/7f86ac08d3b009c8af7c
*/
public function contextAction()
{
$ixif = $this->getParam('ixif');
$name = '';
switch ($ixif) {
case '0/context.json':
$name = 'ixif/context.json';
break;
}
if ($name) {
$filepath = physical_path_to($name);
$src = file_get_contents($filepath);
if ($src) {
$src = json_decode($src);
return $this->_sendJson($src);
}
}
// Silently end without error.
$this->_helper->viewRenderer->setNoRender();
}
/**
* Helper to return image of the current image.
*
* @param string $type Derivative type of the image.
* @return void
*/
protected function _sendImage($type = null)
{
$request = $this->getRequest();
$itemId = $request->getParam('id');
$item = get_record_by_id('item', $itemId);
if (empty($item)) {
throw new Omeka_Controller_Exception_404();
}
$index = $request->getParam('image');
// Get the index.
if ($index != '000') {
$index = preg_replace('`^[0]*`', '', $index);
$index--;
} else {
$index = 0;
}
$bookreader = new BookReader($item);
$part = $request->getParam('part');
$bookreader->setPart($part);
if (is_null($type)) {
$scale = $request->getParam('scale');
$type = $bookreader->getSizeType($scale);
// Set a default, even it's normally useless.
$type = $type ?: 'fullsize';
}
$imagesFiles = $bookreader->getLeaves();
$file = $imagesFiles[$index];
// No file, so a blank image
if (empty($file)) {
$filepath = 'images/blank.png';
$image = file_get_contents(physical_path_to($filepath));
$this->getResponse()->clearBody();
$this->getResponse()->setHeader('Content-Type', 'image/jpeg');
$this->getResponse()->setBody($image);
} else {
$this->_helper->redirector->gotoUrlAndExit($file->getWebPath($type));
}
}
/**
* Create an IIIF canvas object for a place holder.
*
* @return Standard object
*/
protected function _iiifCanvasPlaceholder()
{
$canvas = array();
$canvas['@id'] = WEB_ROOT . '/iiif/ixif-message/canvas/c1';
$canvas['@type'] = 'sc:Canvas';
$canvas['label'] = __('Placeholder image');
$placeholder = 'images/placeholder.jpg';
$canvas['thumbnail'] = src($placeholder);
list($widthPlaceholder, $heightPlaceholder) = $this->_getWidthAndHeight(physical_path_to($placeholder));
$canvas['width'] = $widthPlaceholder;
$canvas['height'] = $heightPlaceholder;
$image = array();
$image['@id'] = WEB_ROOT . '/iiif/ixif-message/imageanno/placeholder';
$image['@type'] = 'oa:Annotation';
$image['motivation'] = "sc:painting";
// There is only one image (parallel is not managed).
$imageResource = array();
$imageResource['@id'] = WEB_ROOT . '/iiif/ixif-message-0/res/placeholder';
$imageResource['@type'] = 'dctypes:Image';
$imageResource['width'] = $widthPlaceholder;
$imageResource['height'] = $heightPlaceholder;
$imageResource = (object) $imageResource;
$image['resource'] = $imageResource;
$image['on'] = WEB_ROOT . '/iiif/ixif-message/canvas/c1';
$image = (object) $image;
$images = array($image);
$canvas['images'] = $images;
$canvas = (object) $canvas;
return $canvas;
}