/**
* Returns the image URL for a given slide ID ( $post_id ) that belongs to
* a given slider id( $slider_id ). Will do all size checking and will return
* an array with the image details or false if image isn't found.
*
* @param int $post_id - ID of slide
* @param int $slider_id - ID of slider
* @return array( 'url' => URL of image, 'width' => image width, 'height' => image height, 'id' => image ID if found in media gallery )
*/
function get_the_fa_slide_image_url($post_id = false, $slider_id = false)
{
// get the slider ID
if (!$slider_id) {
global $fa_slider;
if ($fa_slider) {
$slider_id = $fa_slider->ID;
} else {
_doing_it_wrong('get_the_fa_image_url()', __('Use this function inside a slide loop or pass the slider ID to the function.', 'fapro'), '3.0');
}
}
// set the post ID
if (!$post_id) {
if (isset($fa_slider)) {
$post = get_current_slide();
} else {
global $post;
}
if ($post) {
$post_id = $post->ID;
} else {
_doing_it_wrong('get_the_fa_image_url()', __('Use this function inside a slide loop or pass the slide (post) ID to the function.', 'fapro'), '3.0');
}
} else {
$post = get_post($post_id);
}
if (!$post || !$post_id || !$slider_id) {
return false;
}
// get slider options and check if image is visible
$slider_options = fa_get_slider_options($slider_id, 'content_image');
if (!$slider_options['show']) {
return;
}
// slide options
$options = fa_get_slide_options($post_id);
// get the attached image ID
$image_id = get_the_fa_image_id($post_id);
// try to make the image url
$image_url = false;
if ('wp' == $slider_options['sizing'] && $image_id) {
$wp_attachment = wp_get_attachment_image_src($image_id, $slider_options['wp_size']);
if ($wp_attachment) {
$image_url = $wp_attachment[0];
}
} else {
if ('custom' == $slider_options['sizing'] && $image_id) {
$image_url = fa_get_custom_image_size($image_id, $slider_options['width'], $slider_options['height']);
}
}
// last options, check on slide settings if an image URL is set
if (!$image_url) {
if (isset($options['temp_image_url']) && !empty($options['temp_image_url'])) {
$image_url = $options['temp_image_url'];
} else {
// try to autodetect the image URL in post content if option is enabled
$plugin_options = fa_get_options('settings');
if (isset($plugin_options['allow_image_autodetect']) && $plugin_options['allow_image_autodetect']) {
$current_post = get_post($post_id);
if ($current_post) {
$image = fa_detect_image($current_post->post_content);
if (!$image['id'] && $image['img']) {
$image_url = $image['img'];
fa_update_slide_options($post_id, array('temp_image_url' => $image_url));
}
}
}
}
}
// if no image URL was detected, stop
if (!$image_url) {
return false;
}
$width = $height = false;
// get the image size
if ('custom' == $slider_options['sizing']) {
$width = absint($slider_options['width']);
$height = absint($slider_options['height']);
} elseif ('wp' == $slider_options['sizing']) {
if (isset($wp_attachment) && $wp_attachment) {
$width = $wp_attachment[1];
$height = $wp_attachment[2];
}
}
// create the response
return array('url' => $image_url, 'width' => $width, 'height' => $height, 'id' => $image_id);
}
/**
* Scans a given post content for images.
*
* @param string $content - the post content to be scanned
* @return array
*/
private function find_image_in_post_content($content)
{
return fa_detect_image($content);
}