<?php //phpcs:ignore WordPress.Files.FileName.InvalidClassFileName

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/**

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* Presentations

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* Presentations plugin based on the work done by <a href="http://darylkoop.com/">Daryl Koopersmith</a>. Powered by jmpress.js

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*

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* HOW TO: How the plugin settings are organized and which features are supported.

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*

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* The entire presentation should be wrapped with a [presentation] shortcode, and every

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* individual slide should be wrapped with a [slide] shortcode. Any settings supported

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* by [slide] can be set into [presentation], which will apply that setting for the entire

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* presentation unless overridden by individual slides.

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*

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* - [presentation] only settings:

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* - duration: transition durations, default is one second.

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* - height: content height, default is 400px

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* - width: content width, default is 550px

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* - autoplay: delay between transitions in seconds, default 3s

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* when set the presentation will automatically transition between slides

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* as long as the presentation remains in focus

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*

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* - [slide] settings:

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* - transition: specifies where the next slide will be placed relative

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* to the last one before it. Supported values are "up", "down"

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* "left", "right", or "none". Default value is "down".

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*

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* - scale: scales the content relative to other slides, default value is one

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*

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* - rotate: rotates the content by the specified degrees, default is zero

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*

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* - fade: slides will fade in and out during transition. Values of "on" or

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* "true" will enable fading, while values of "no" or "false" will

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* disable it. Default value is "on"

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*

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* - bgcolor: specifies a background color for the slides. Any CSS valid value

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* is permitted. Default color is transparent.

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*

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* - bgimg: specifies an image url which will fill the background. Image is

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* set to fill the background 100% width and height

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*

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* - fadebullets: any html <li> tags will start out with an opacity of 0 and any

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* subsequent slide transitions will show the bullets one by one

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*

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* Known issues:

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*

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* - IE 7/8 are not supported by jmpress and presentations will not work

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* - IE 9 will not animate transitions at all, though it's possible to at least

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* switch between slides.

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* - Infinite Scroll themes will not load presentations properly unless the post

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* happens to be on the first loaded page. The permalink page will function

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* properly, however.

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* - Exiting fullscreen mode will not properly reset the scroll locations in Safari

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*

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* @package automattic/jetpack

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*/

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use Automattic\Jetpack\Assets;

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if ( ! defined( 'ABSPATH' ) ) {

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exit( 0 );

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}

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if ( ! class_exists( 'Presentations' ) ) :

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/**

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* Create a shortcode to display Presentations and slides.

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*/

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class Presentations {

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/**

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* Presentation settings.

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*

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* @var array

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*/

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private $presentation_settings;

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/**

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* Do we have a Presentation shortcode to be displayed.

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*

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* @var bool

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*/

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private $presentation_initialized;

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/**

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* Were scripts and styles enqueued already.

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*

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* @var bool

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*/

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private $scripts_and_style_included;

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/**

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* Constructor

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*/

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public function __construct() {

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$this->presentation_initialized = false;

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$this->scripts_and_style_included = false;

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// Registers shortcodes.

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add_action( 'wp_head', array( $this, 'add_scripts' ), 1 );

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add_shortcode( 'presentation', array( $this, 'presentation_shortcode' ) );

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add_shortcode( 'slide', array( $this, 'slide_shortcode' ) );

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}

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/**

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* Enqueue all scripts and styles.

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*/

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public function add_scripts() {

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$this->scripts_and_style_included = false;

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if ( empty( $GLOBALS['posts'] ) || ! is_array( $GLOBALS['posts'] ) ) {

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return;

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}

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foreach ( $GLOBALS['posts'] as $p ) {

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if ( isset( $p->post_content ) && has_shortcode( $p->post_content, 'presentation' ) ) {

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$this->scripts_and_style_included = true;

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break;

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}

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}

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if ( ! $this->scripts_and_style_included ) {

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return;

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}

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$plugin = plugin_dir_url( __FILE__ );

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// Add CSS.

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wp_enqueue_style( 'presentations', $plugin . 'css/style.css', array(), JETPACK__VERSION );

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// Add JavaScript.

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wp_enqueue_script( 'jquery' );

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wp_enqueue_script(

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'jmpress',

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Assets::get_file_url_for_environment( '_inc/build/shortcodes/js/jmpress.min.js', 'modules/shortcodes/js/jmpress.js' ),

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array( 'jquery' ),

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JETPACK__VERSION,

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true

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);

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wp_enqueue_script(

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'presentations',

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Assets::get_file_url_for_environment( '_inc/build/shortcodes/js/main.min.js', 'modules/shortcodes/js/main.js' ),

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array( 'jquery', 'jmpress' ),

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JETPACK__VERSION,

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true

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);

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}

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/**

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* Main Presentation shortcode.

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*

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* @param array $atts Shortcode attributes.

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* @param string $content Post content.

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*/

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public function presentation_shortcode( $atts, $content = '' ) {

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// Mark that we've found a valid [presentation] shortcode.

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$this->presentation_initialized = true;

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$atts = shortcode_atts(

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array(

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'duration' => '',

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'height' => '',

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'width' => '',

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'bgcolor' => '',

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'bgimg' => '',

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'autoplay' => '',

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// Settings.

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'transition' => '',

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'scale' => '',

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'rotate' => '',

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'fade' => '',

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'fadebullets' => '',

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),

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$atts,

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'presentation'

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);

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$this->presentation_settings = array(

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'transition' => 'down',

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'scale' => 1,

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'rotate' => 0,

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'fade' => 'on',

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'fadebullets' => 0,

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'last' => array(

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'x' => 0,

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'y' => 0,

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'scale' => 1,

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'rotate' => 0,

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),

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);

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// Set the presentation-wide settings.

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if ( '' !== trim( $atts['transition'] ) ) {

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$this->presentation_settings['transition'] = $atts['transition'];

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}

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if ( '' !== trim( $atts['scale'] ) ) {

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$this->presentation_settings['scale'] = (float) $atts['scale'];

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}

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if ( '' !== trim( $atts['rotate'] ) ) {

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$this->presentation_settings['rotate'] = (float) $atts['rotate'];

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}

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if ( '' !== trim( $atts['fade'] ) ) {

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$this->presentation_settings['fade'] = $atts['fade'];

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}

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if ( '' !== trim( $atts['fadebullets'] ) ) {

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$this->presentation_settings['fadebullets'] = $atts['fadebullets'];

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}

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// Set any settings the slides don't care about.

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if ( '' !== trim( $atts['duration'] ) ) {

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$duration = (float) $atts['duration'] . 's';

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} else {

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$duration = '1s';

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}

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// Autoplay durations are set in milliseconds.

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if ( '' !== trim( $atts['autoplay'] ) ) {

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$autoplay = (float) $atts['autoplay'] * 1000;

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} else {

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$autoplay = 0;

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} // No autoplay

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// Set the presentation size as specified or with some nicely sized dimensions.

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if ( '' !== trim( $atts['width'] ) ) {

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$this->presentation_settings['width'] = (int) $atts['width'];

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} else {

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$this->presentation_settings['width'] = 480;

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}

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if ( '' !== trim( $atts['height'] ) ) {

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$this->presentation_settings['height'] = (int) $atts['height'];

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} else {

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$this->presentation_settings['height'] = 370;

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}

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// Hide the content by default in case the scripts fail.

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$style = 'display: none; width: ' . $this->presentation_settings['width'] . 'px; height: ' . $this->presentation_settings['height'] . 'px;';

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/*

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* Check for background color XOR background image

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* Use a white background if nothing specified

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*/

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if ( preg_match( '/https?\:\/\/[^\'"\s]*/', $atts['bgimg'], $matches ) ) {

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$style .= ' background-image: url("' . esc_url( $matches[0] ) . '");';

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} elseif ( '' !== trim( $atts['bgcolor'] ) ) {

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$style .= ' background-color: ' . esc_attr( $atts['bgcolor'] ) . ';';

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} else {

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$style .= ' background-color: #fff;';

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}

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// Not supported message style is inlined incase the style sheet doesn't get included.

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$out = "<section class='presentation-wrapper'>";

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$out .= "<p class='not-supported-msg' style='display: inherit; padding: 25%; text-align: center;'>";

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$out .= __( 'This slideshow could not be started. Try refreshing the page or viewing it in another browser.', 'jetpack' ) . '</p>';

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$out .= sprintf(

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'<div class="presentation" duration="%s" data-autoplay="%s" style="%s">',

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esc_attr( $duration ),

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esc_attr( $autoplay ),

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esc_attr( $style )

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);

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$out .= "<div class='nav-arrow-left'></div>";

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$out .= "<div class='nav-arrow-right'></div>";

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$out .= "<div class='nav-fullscreen-button'></div>";

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if ( $autoplay ) {

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$out .= '<div class="autoplay-overlay" style="display: none;"><p class="overlay-msg">';

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$out .= __( 'Click to autoplay the presentation!', 'jetpack' );

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$out .= '</p></div>';

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}

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$out .= do_shortcode( $content );

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$out .= '</section>';

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$this->presentation_initialized = false;

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return $out;

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}

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/**

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* Slide shortcode.

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*

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* @param array $atts Shortcode attributes.

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* @param string $content Post content.

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*/

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public function slide_shortcode( $atts, $content = '' ) {

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// Bail out unless wrapped by a [presentation] shortcode.

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if ( ! $this->presentation_initialized ) {

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return $content;

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}

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$atts = shortcode_atts(

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array(

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'transition' => '',

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'scale' => '',

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'rotate' => '',

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'fade' => '',

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'fadebullets' => '',

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'bgcolor' => '',

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'bgimg' => '',

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),

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$atts,

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'slide'

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);

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// Determine positioning based on transition.

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if ( '' === trim( $atts['transition'] ) ) {

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$atts['transition'] = $this->presentation_settings['transition'];

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}

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// Setting the content scale.

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if ( '' === trim( $atts['scale'] ) ) {

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$atts['scale'] = $this->presentation_settings['scale'];

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}

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if ( '' === trim( $atts['scale'] ) ) {

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$scale = 1;

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} else {

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$scale = (float) $atts['scale'];

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}

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if ( $scale < 0 ) {

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$scale *= -1;

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}

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// Setting the content rotation.

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if ( '' === trim( $atts['rotate'] ) ) {

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$atts['rotate'] = $this->presentation_settings['rotate'];

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}

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if ( '' === trim( $atts['rotate'] ) ) {

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$rotate = 0;

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} else {

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$rotate = (float) $atts['rotate'];

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}

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// Setting if the content should fade.

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if ( '' === trim( $atts['fade'] ) ) {

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$atts['fade'] = $this->presentation_settings['fade'];

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}

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if ( 'on' === $atts['fade'] || 'true' === $atts['fade'] ) {

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$fade = 'fade';

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} else {

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$fade = '';

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}

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// Setting if bullets should fade on step changes.

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if ( '' === trim( $atts['fadebullets'] ) ) {

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$atts['fadebullets'] = $this->presentation_settings['fadebullets'];

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}

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if ( 'on' === $atts['fadebullets'] || 'true' === $atts['fadebullets'] ) {

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$fadebullets = 'fadebullets';

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} else {

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$fadebullets = '';

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}

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$coords = $this->get_coords(

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array(

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'transition' => $atts['transition'],

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'scale' => $scale,

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'rotate' => $rotate,

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)

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);

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$x = $coords['x'];

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$y = $coords['y'];

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/*

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* Check for background color XOR background image

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* Use a white background if nothing specified

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*/

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if ( preg_match( '/https?\:\/\/[^\'"\s]*/', $atts['bgimg'], $matches ) ) {

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$style = 'background-image: url("' . esc_url( $matches[0] ) . '");';

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} elseif ( '' !== trim( $atts['bgcolor'] ) ) {

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$style = 'background-color: ' . esc_attr( $atts['bgcolor'] ) . ';';

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} else {

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$style = '';

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}

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// Put everything together and let jmpress do the magic!

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$out = sprintf(

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'<div class="step %s %s" data-x="%s" data-y="%s" data-scale="%s" data-rotate="%s" style="%s">',

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esc_attr( $fade ),

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esc_attr( $fadebullets ),

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esc_attr( $x ),

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esc_attr( $y ),

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esc_attr( $scale ),

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esc_attr( $rotate ),

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esc_attr( $style )

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);

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$out .= '<div class="slide-content">';

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$out .= do_shortcode( $content );

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$out .= '</div></div>';

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return $out;

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}

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/**

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* Determines the position of the next slide based on the position and scaling of the previous slide.

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*

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* @param array $args {

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* Array of key-value pairs.

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*

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* @type string $transition: the transition name, "up", "down", "left", or "right".

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* @type float $scale: the scale of the next slide (used to determine the position of the slide after that).

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* }

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*

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* @return array with the 'x' and 'y' coordinates of the slide.

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*/

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private function get_coords( $args ) {

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if ( 0 === $args['scale'] ) {

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$args['scale'] = 1;

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}

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$width = $this->presentation_settings['width'];

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$height = $this->presentation_settings['height'];

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$last = $this->presentation_settings['last'];

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$scale = $last['scale'];

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$next = array(

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'x' => $last['x'],

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'y' => $last['y'],

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'scale' => $args['scale'],

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'rotate' => $args['rotate'],

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);

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// All angles are measured from the vertical axis, so everything is backwards!

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$diag_angle = atan2( $width, $height );

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$diagonal = sqrt( pow( $width, 2 ) + pow( $height, 2 ) );

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/*

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* We offset the angles by the angle formed by the diagonal so that

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* we can multiply the sines directly against the diagonal length

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*/

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$theta = deg2rad( $last['rotate'] ) - $diag_angle;

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$phi = deg2rad( $next['rotate'] ) - $diag_angle;

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// We start by displacing by the slide dimensions.

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$total_horiz_disp = $width * $scale;

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$total_vert_disp = $height * $scale;

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/*

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* If the previous slide was rotated, we add the incremental offset from the rotation

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* Namely the difference between the regular dimension (no rotation) and the component

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* of the diagonal for that angle

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*/

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$total_horiz_disp += ( ( ( abs( sin( $theta ) ) * $diagonal ) - $width ) / 2 ) * $scale;

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$total_vert_disp += ( ( ( abs( cos( $theta ) ) * $diagonal ) - $height ) / 2 ) * $scale;

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/*

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* Similarly, we check if the current slide has been rotated and add whatever additional

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* offset has been added. This is so that two rotated corners don't clash with each other.

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* Note: we are checking the raw angle relative to the vertical axis, NOT the diagonal angle.

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*/

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if ( 0 !== $next['rotate'] % 180 ) {

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$total_horiz_disp += ( abs( ( sin( $phi ) * $diagonal ) - $width ) / 2 ) * $next['scale'];

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$total_vert_disp += ( abs( ( cos( $phi ) * $diagonal ) - $height ) / 2 ) * $next['scale'];

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}

[460] Fix | Delete

[461] Fix | Delete

switch ( trim( $args['transition'] ) ) {

[462] Fix | Delete

case 'none':

[463] Fix | Delete

break;

[464] Fix | Delete

[465] Fix | Delete

case 'left':

[466] Fix | Delete

$next['x'] -= $total_horiz_disp;

[467] Fix | Delete

break;

[468] Fix | Delete

[469] Fix | Delete

case 'right':

[470] Fix | Delete

$next['x'] += $total_horiz_disp;

[471] Fix | Delete

break;

[472] Fix | Delete

[473] Fix | Delete

case 'up':

[474] Fix | Delete

$next['y'] -= $total_vert_disp;

[475] Fix | Delete

break;

[476] Fix | Delete

[477] Fix | Delete

case 'down':

[478] Fix | Delete

default:

[479] Fix | Delete

$next['y'] += $total_vert_disp;

[480] Fix | Delete

break;

[481] Fix | Delete

}

[482] Fix | Delete

[483] Fix | Delete

$this->presentation_settings['last'] = $next;

[484] Fix | Delete

[485] Fix | Delete

return $next;

[486] Fix | Delete

}

[487] Fix | Delete

}

[488] Fix | Delete

[489] Fix | Delete

$GLOBALS['presentations'] = new Presentations();

[490] Fix | Delete

endif;

[491] Fix | Delete

[492] Fix | Delete