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<?php
/**
* @file
* ImageCache functions.
*/
/**
* Create ImageCache profiles for common display resolutions.
*/
function imagecache_auto_create_presets() {
$presets = imagecache_auto_presets();
foreach ($presets as $options) {
imagecache_auto_create_preset($options);
}
}
/**
* Create an ImageCache preset.
*
* @param $options
* Preset options.
*
* @see http://drupal.org/node/558664
*/
function imagecache_auto_create_preset($options) {
// Set preset name
if (isset($options['name'])) {
$name = $options['name'];
}
else {
$name = $options['width'] .'x'. $options['height'];
}
// Check if preset already exists.
$preset = imagecache_preset_by_name($name);
if (!empty($preset)) {
return;
}
// Check if maximum number of presets was reached.
$max_presets = (int) variable_get('imagecache_auto_max_presets', '250');
if (imagecache_auto_count_presets() + 1 > $max_presets) {
$message = 'Maximum number of imagecache presets reached. Please consider increasing the max number of presets.';
watchdog('imagecache_auto', $message, array(), WATCHDOG_ERROR);
return;
}
// Create a preset.
$preset = imagecache_preset_save(array('presetname' => $name));
// Set operation name.
if (isset($options['action'])) {
$operation = $options['action'];
}
else {
$operation = 'imagecache_scale_and_crop';
}
// Add preset actions.
$action = new stdClass();
$action->presetid = $preset['presetid'];
$action->module = 'imagecache';
$action->action = $operation;
$action->data = array('width' => $options['width'], 'height' => $options['height']);
drupal_write_record('imagecache_action', $action);
}
/**
* Delete an ImageCache preset.
*
* @param $options
* Preset options.
*/
function imagecache_auto_delete_preset($options) {
// Set preset name.
if (isset($options['name'])) {
$name = $options['name'];
}
else {
$name = $options['width'] .'x'. $options['height'];
}
// Check if preset exists.
$preset = imagecache_preset_by_name($name);
if (!empty($preset)) {
imagecache_preset_delete(imagecache_preset_by_name($name));
}
}
/**
* Update imagecache presets.
*
* @param $old
* Old presets to be deleted.
*
* @param $new
* New presets to be created.
*/
function imagecache_auto_presets_update($old = array(), $new = NULL) {
// Remove old presets.
foreach ($old as $options) {
imagecache_auto_delete_preset($options);
}
if ($new == NULL) {
imagecache_auto_create_presets();
}
else {
// Create new presets.
foreach ($new as $options) {
imagecache_auto_create_preset($options);
}
}
}
/**
* Return an array of presets.
*
* @see http://en.wikipedia.org/wiki/List_of_common_resolutions
*/
function imagecache_auto_presets() {
$presets = array();
foreach (module_implements('imagecache_auto_presets') as $module) {
$presets = array_merge($presets, module_invoke($module, 'imagecache_auto_presets'));
}
return $presets;
}
/**
* Count number of existing imagecache presets.
*
* @return
* Number of existing presets.
*/
function imagecache_auto_count_presets() {
$query = 'SELECT COUNT(presetid) AS count FROM {imagecache_preset}';
$result = db_query($query);
$count = db_fetch_object($result);
return $count->count;
}
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