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<?php |
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/** |
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* VR Viewer Shortcode |
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* converts [vr] shortcode to an iframe viewer hosted on vr.me.sh |
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* |
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* @package Jetpack |
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*/ |
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|
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/** |
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* Scrub URL paramaters for VR viewer |
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* |
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* @param array $params { |
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* parameter array which is passed to the jetpack_vr_viewer. |
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* |
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* @type string $url url of 360 media |
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* @type string $guid guid for videopress |
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* @type string $view cinema, 360 - controls if panaroma view, or 360 |
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* @type string $rotation number for rotating media |
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* @type string $preview show preview image or not |
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* } |
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* |
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* @return array|false $url_params Array of URL parameters. |
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*/ |
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function jetpack_vr_viewer_get_viewer_url_params( $params ) { |
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$url_params = array(); |
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|
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if ( isset( $params['rotation'] ) ) { |
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$url_params['rotation'] = intval( $params['rotation'], 10 ); |
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} |
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|
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if ( isset( $params['view'] ) && in_array( $params['view'], array( 'cinema', '360' ), true ) ) { |
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$url_params['view'] = $params['view']; |
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} |
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|
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if ( isset( $params['preview'] ) && $params['preview'] ) { |
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$url_params['preview'] = 1; |
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} |
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|
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if ( isset( $params['url'] ) ) { |
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return array_merge( $url_params, array( 'url' => $params['url'] ) ); |
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} elseif ( isset( $params['guid'] ) ) { |
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return array_merge( $url_params, array( 'guid' => $params['guid'] ) ); |
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} |
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|
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return false; |
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} |
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|
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/** |
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* Get padding for IFRAME depending on view type |
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* |
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* @param string $view string cinema, 360 - default cinema. |
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* |
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* @return string $css padding |
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*/ |
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function jetpack_vr_viewer_iframe_padding( $view ) { |
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if ( '360' === $view ) { |
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return '100%'; // 1:1 square aspect for 360 |
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} |
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|
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return '50%'; // 2:1 panorama aspect |
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} |
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|
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/** |
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* Create HTML for VR Viewer IFRAME and wrapper |
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* The viewer code is hosted on vr.me.sh site which is then displayed |
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* within posts via an IFRAME. This function returns the IFRAME html. |
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* |
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* @param array $url_params { |
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* parameter array which is passed to the jetpack_vr_viewer. |
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* |
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* @type string $url url of 360 media |
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* @type string $guid guid for videopress |
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* @type string $view cinema, 360 - controls if panaroma view, or 360 |
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* @type string $rotation number for rotating media |
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* @type string $preview show preview image or not |
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* } |
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* |
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* @return string $rtn an iframe for viewer. |
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*/ |
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function jetpack_vr_viewer_get_html( $url_params ) { |
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global $content_width; |
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|
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$iframe = add_query_arg( $url_params, 'https://vr.me.sh/view/' ); |
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|
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// set some defaults. |
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$maxwidth = ( isset( $content_width ) ) ? $content_width : 720; |
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$view = ( isset( $url_params['view'] ) ) ? $url_params['view'] : 'cinema'; |
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|
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$rtn = '<div style="position: relative; max-width: ' . $maxwidth . 'px; margin-left: auto; margin-right: auto; overflow: hidden; margin-bottom: 1em;">'; |
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$rtn .= '<div style="padding-top: ' . jetpack_vr_viewer_iframe_padding( $view ) . ';"></div>'; |
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$rtn .= '<iframe style="position: absolute; top: 0; right: 0; bottom: 0; left: 0; height: 100%" allowfullscreen="true" frameborder="0" width="100%" height="300" src="' . esc_url( $iframe ) . '">'; |
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$rtn .= '</iframe>'; |
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$rtn .= '</div>'; |
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|
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return $rtn; |
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} |
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|
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/** |
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* Convert [vr] shortcode to viewer |
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* |
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* Shortcode example: |
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* [vr url="https://en-blog.files.wordpress.com/2016/12/regents_park.jpg" view="360"] |
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* |
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* VR Viewer embed code: |
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* <div style="position: relative; max-width: 720px; margin-left: auto; margin-right: auto; overflow: hidden;"> |
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* <div style="padding-top: 100%;"></div> |
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* <iframe style="position: absolute; top: 0; right: 0; bottom: 0; left: 0; height: 100%" allowfullscreen="true" frameborder="0" width="100%" height="400" src="https://vr.me.sh/view/?view=360&url=https://en-blog.files.wordpress.com/2016/12/regents_park.jpg"> |
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* </iframe> |
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* </div> |
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* |
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* @param array $atts Shortcode attributes. |
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* |
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* @return html - complete vr viewer html |
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*/ |
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function jetpack_vr_viewer_shortcode( $atts ) { |
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$params = shortcode_atts( |
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array( |
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0 => null, |
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'url' => null, |
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'src' => null, |
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'guid' => null, |
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'rotation' => null, |
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'view' => null, |
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'preview' => false, |
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), |
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$atts |
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); |
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|
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// We offer a few ways to specify the URL. |
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if ( $params[0] ) { |
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$params['url'] = $params[0]; |
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} elseif ( $params['src'] ) { |
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$params['url'] = $params['src']; |
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} |
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|
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$url_params = jetpack_vr_viewer_get_viewer_url_params( $params ); |
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if ( $url_params ) { |
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return jetpack_vr_viewer_get_html( $url_params ); |
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} |
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|
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// add check for user. |
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if ( current_user_can( 'edit_posts' ) ) { |
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return '[vr] shortcode requires a data source to be given'; |
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} else { |
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return ''; |
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} |
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} |
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add_shortcode( 'vr', 'jetpack_vr_viewer_shortcode' ); |
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|
