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<?php |
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/** |
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* Slideshare shortcode |
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* |
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* Formats: |
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* Old style (still compatible): [slideshare id=5342235&doc=camprock-101002163655-phpapp01&w=300&h=200] |
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* New style: [slideshare id=5342235&w=300&h=200&fb=0&mw=0&mh=0&sc=no] |
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* |
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* Legend: |
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* id = Document ID provided by Slideshare |
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* w = Width of iFrame (int) |
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* h = Height of iFrame (int) |
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* fb = iFrame frameborder (int) |
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* mw = iFrame marginwidth (int) |
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* mh = iFrame marginheight (int) |
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* sc = iFrame Scrollbar (yes/no) |
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* pro = Slideshare Pro (yes/no) |
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* style = Inline CSS (string) |
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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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* Register and display shortcode. |
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* |
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* @param array $atts Shortcode attributes. |
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*/ |
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function slideshare_shortcode( $atts ) { |
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global $content_width; |
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|
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$params = shortcode_new_to_old_params( $atts ); |
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parse_str( $params, $arguments ); |
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|
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if ( empty( $arguments ) ) { |
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return '<!-- SlideShare error: no arguments -->'; |
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} |
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|
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$attr = shortcode_atts( |
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array( |
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'id' => '', |
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'w' => '', |
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'h' => '', |
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'fb' => '', |
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'mw' => '', |
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'mh' => '', |
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'sc' => '', |
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'pro' => '', |
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'style' => '', |
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), |
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$arguments |
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); |
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|
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// check that the Slideshare ID contains letters, numbers and query strings. |
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$pattern = '/[^-_a-zA-Z0-9?=&]/'; |
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if ( empty( $attr['id'] ) || preg_match( $pattern, $attr['id'] ) ) { |
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return '<!-- SlideShare error: id is missing or has illegal characters -->'; |
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} |
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|
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// check the width/height. |
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$w = intval( $attr['w'] ); |
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|
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// If no width was specified (or uses the wrong format), and if we have a $content_width, use that. |
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if ( empty( $w ) && ! empty( $content_width ) ) { |
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$w = intval( $content_width ); |
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} elseif ( $w < 300 || $w > 1600 ) { // If width was specified, but is too small/large, set default value. |
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$w = 425; |
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} else { |
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$w = intval( $w ); |
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} |
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|
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$h = ceil( $w * 348 / 425 ); // Note: user-supplied height is ignored. |
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|
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if ( ! empty( $attr['pro'] ) ) { |
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$source = 'https://www.slideshare.net/slidesharepro/' . $attr['id']; |
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} else { |
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$source = 'https://www.slideshare.net/slideshow/embed_code/' . $attr['id']; |
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} |
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|
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if ( isset( $attr['rel'] ) ) { |
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$source = add_query_arg( 'rel', intval( $attr['rel'] ), $source ); |
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} |
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|
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if ( ! empty( $attr['startSlide'] ) ) { |
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$source = add_query_arg( 'startSlide', intval( $attr['startSlide'] ), $source ); |
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} |
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|
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$player = sprintf( "<iframe src='%s' width='%d' height='%d'", esc_url( $source ), $w, $h ); |
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|
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// check the frameborder. |
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if ( ! empty( $attr['fb'] ) || '0' === $attr['fb'] ) { |
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$player .= " frameborder='" . intval( $attr['fb'] ) . "'"; |
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} |
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|
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// check the margin width; if not empty, cast as int. |
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if ( ! empty( $attr['mw'] ) || '0' === $attr['mw'] ) { |
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$player .= " marginwidth='" . intval( $attr['mw'] ) . "'"; |
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} |
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|
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// check the margin height, if not empty, cast as int. |
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if ( ! empty( $attr['mh'] ) || '0' === $attr['mh'] ) { |
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$player .= " marginheight='" . intval( $attr['mh'] ) . "'"; |
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} |
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|
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if ( ! empty( $attr['style'] ) ) { |
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$player .= " style='" . esc_attr( $attr['style'] ) . "'"; |
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} |
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|
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// check the scrollbar; cast as a lowercase string for comparison. |
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if ( ! empty( $attr['sc'] ) ) { |
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$sc = strtolower( $attr['sc'] ); |
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|
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if ( in_array( $sc, array( 'yes', 'no' ), true ) ) { |
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$player .= " scrolling='" . $sc . "'"; |
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} |
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} |
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|
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$player .= ' allowfullscreen webkitallowfullscreen mozallowfullscreen></iframe>'; |
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|
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/** |
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* Filter the returned SlideShare shortcode. |
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* |
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* @module shortcodes |
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* |
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* @since 4.7.0 |
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* |
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* @param string $player The iframe to return. |
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* @param array $atts The attributes specified in the shortcode. |
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*/ |
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return apply_filters( 'jetpack_slideshare_shortcode', $player, $atts ); |
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} |
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add_shortcode( 'slideshare', 'slideshare_shortcode' ); |
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|
