vr.php
| 1 | <?php |
| 2 | |
| 3 | // VR Viewer Shortcode |
| 4 | // converts [vr] shortcode to an iframe viewer hosted on vr.me.sh |
| 5 | |
| 6 | |
| 7 | /** |
| 8 | * Scrub URL paramaters for VR viewer |
| 9 | * |
| 10 | * @param url_params - parameter array which is passed to the jetpack_vr_viewer |
| 11 | * @param url_params['url'] - url of 360 media |
| 12 | * @param url_params['guid'] - guid for videopress |
| 13 | * @param url_params['view'] - cinema, 360 - controls if panaroma view, or 360 |
| 14 | * @param url_params['rotation'] - number for rotating media |
| 15 | * @param url_params['preview'] - show preview image or not |
| 16 | * @return url_params array or false |
| 17 | */ |
| 18 | function jetpack_vr_viewer_get_viewer_url_params( $params ) { |
| 19 | $url_params = array(); |
| 20 | |
| 21 | if ( isset( $params['rotation'] ) ) { |
| 22 | $url_params['rotation'] = intval( $params['rotation'], 10 ); |
| 23 | } |
| 24 | |
| 25 | if ( isset( $params['view'] ) && in_array( $params['view'], array( 'cinema', '360' ), true ) ) { |
| 26 | $url_params['view'] = $params['view']; |
| 27 | } |
| 28 | |
| 29 | if ( isset( $params['preview'] ) && $params['preview'] ) { |
| 30 | $url_params['preview'] = 1; |
| 31 | } |
| 32 | |
| 33 | if ( isset( $params['url'] ) ) { |
| 34 | return array_merge( $url_params, array( 'url' => $params['url'] ) ); |
| 35 | } elseif ( isset( $params['guid'] ) ) { |
| 36 | return array_merge( $url_params, array( 'guid' => $params['guid'] ) ); |
| 37 | } |
| 38 | |
| 39 | return false; |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Get padding for IFRAME depending on view type |
| 44 | * |
| 45 | * @param view - string cinema, 360 - default cinema |
| 46 | * @return css padding |
| 47 | */ |
| 48 | function jetpack_vr_viewer_iframe_padding( $view ) { |
| 49 | if ( $view === '360' ) { |
| 50 | return '100%'; // 1:1 square aspect for 360 |
| 51 | } |
| 52 | |
| 53 | return '50%'; // 2:1 panorama aspect |
| 54 | } |
| 55 | |
| 56 | /** |
| 57 | * Create HTML for VR Viewer IFRAME and wrapper |
| 58 | * The viewer code is hosted on vr.me.sh site which is then displayed |
| 59 | * within posts via an IFRAME. This function returns the IFRAME html. |
| 60 | * |
| 61 | * @param url_params - parameter array which is passed to the jetpack_vr_viewer |
| 62 | * @param url_params['url'] - url of 360 media |
| 63 | * @param url_params['guid'] - guid for videopress |
| 64 | * @param url_params['view'] - cinema, 360 - controls if panaroma view, or 360 |
| 65 | * @param url_params['rotation'] - number for rotating media |
| 66 | * @param url_params['preview'] - show preview image or not |
| 67 | * @return html - an iframe for viewer |
| 68 | */ |
| 69 | function jetpack_vr_viewer_get_html( $url_params ) { |
| 70 | global $content_width; |
| 71 | |
| 72 | $iframe = add_query_arg( $url_params, 'https://vr.me.sh/view/' ); |
| 73 | |
| 74 | // set some defaults |
| 75 | $maxwidth = ( isset( $content_width ) ) ? $content_width : 720; |
| 76 | $view = ( isset( $url_params['view'] ) ) ? $url_params['view'] : 'cinema'; |
| 77 | |
| 78 | $rtn = '<div style="position: relative; max-width: ' . $maxwidth . 'px; margin-left: auto; margin-right: auto; overflow: hidden;">'; |
| 79 | $rtn .= '<div style="padding-top: ' . jetpack_vr_viewer_iframe_padding( $view ) . ';"></div>'; |
| 80 | $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 ) . '">'; |
| 81 | $rtn .= '</iframe>'; |
| 82 | $rtn .= '</div>'; |
| 83 | |
| 84 | return $rtn; |
| 85 | } |
| 86 | |
| 87 | /** |
| 88 | * Convert [vr] shortcode to viewer |
| 89 | * |
| 90 | * Shortcode example: |
| 91 | * [vr url="https://en-blog.files.wordpress.com/2016/12/regents_park.jpg" view="360"] |
| 92 | * |
| 93 | * VR Viewer embed code: |
| 94 | * <div style="position: relative; max-width: 720px; margin-left: auto; margin-right: auto; overflow: hidden;"> |
| 95 | * <div style="padding-top: 100%;"></div> |
| 96 | * <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"> |
| 97 | * </iframe> |
| 98 | * </div> |
| 99 | * |
| 100 | * @return html - complete vr viewer html |
| 101 | */ |
| 102 | function jetpack_vr_viewer_shortcode( $atts ) { |
| 103 | $params = shortcode_atts( |
| 104 | array( |
| 105 | 0 => null, |
| 106 | 'url' => null, |
| 107 | 'src' => null, |
| 108 | 'guid' => null, |
| 109 | 'rotation' => null, |
| 110 | 'view' => null, |
| 111 | 'preview' => false, |
| 112 | ), |
| 113 | $atts |
| 114 | ); |
| 115 | |
| 116 | // We offer a few ways to specify the URL |
| 117 | if ( $params[0] ) { |
| 118 | $params['url'] = $params[0]; |
| 119 | } elseif ( $params['src'] ) { |
| 120 | $params['url'] = $params['src']; |
| 121 | } |
| 122 | |
| 123 | $url_params = jetpack_vr_viewer_get_viewer_url_params( $params ); |
| 124 | if ( $url_params ) { |
| 125 | return jetpack_vr_viewer_get_html( $url_params ); |
| 126 | } |
| 127 | |
| 128 | // add check for user |
| 129 | if ( current_user_can( 'edit_posts' ) ) { |
| 130 | return '[vr] shortcode requires a data source to be given'; |
| 131 | } else { |
| 132 | return ''; |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | add_shortcode( 'vr', 'jetpack_vr_viewer_shortcode' ); |
| 137 |