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Editing: image_comparison.php

<?php
if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

/**
 * Porto Image Comparison widget
 *
 * @since 2.2.0
 */

use Elementor\Controls_Manager;

class Porto_Elementor_Image_Comparison_Widget extends \Elementor\Widget_Base {

public function get_name() {
		return 'porto_image_comparison';
	}

public function get_title() {
		return __( 'Porto Image Comparison', 'porto-functionality' );
	}

public function get_categories() {
		return array( 'porto-elements' );
	}

public function get_keywords() {
		return array( 'compare', 'image', 'before', 'after' );
	}

public function get_icon() {
		return 'eicon-image-before-after porto-elementor-widget-icon';
	}

public function has_widget_inner_wrapper(): bool {
		return ! Elementor\Plugin::$instance->experiments->is_feature_active( 'e_optimized_markup' );
	}
	
	public function get_custom_help_url() {
		return 'https://www.portotheme.com/wordpress/porto/documentation/image-comparison-widget/';
	}

protected function is_dynamic_content(): bool {
		return false;
	}

public function get_script_depends() {
		if ( isset( $_REQUEST['elementor-preview'] ) ) {
			return array( 'porto-elementor-widgets-js', 'jquery-event-move', 'porto-image-comparison' );
		} else {
			return array();
		}
	}

protected function register_controls() {

$this->start_controls_section(
			'section_image_comparison',
			array(
				'label' => __( 'Image Comparison', 'porto-functionality' ),
			)
		);

$this->start_controls_tabs( 'tabs_image' );
				$this->start_controls_tab(
					'tab_image_before',
					array(
						'label' => __( 'Before', 'porto-functionality' ),
					)
				);
					$this->add_control(
						'before_img',
						array(
							'type'        => Controls_Manager::MEDIA,
							'label'       => __( 'Before Image', 'porto-functionality' ),
							'description' => __( 'Upload a before image to display.', 'porto-functionality' ),
							'dynamic'     => array(
								'active' => true,
							),
						)
					);
				$this->end_controls_tab();

$this->start_controls_tab(
					'tab_image_after',
					array(
						'label' => __( 'After', 'porto-functionality' ),
					)
				);
					$this->add_control(
						'after_img',
						array(
							'type'        => Controls_Manager::MEDIA,
							'label'       => __( 'After Image', 'porto-functionality' ),
							'description' => __( 'Upload a after image to display.', 'porto-functionality' ),
							'dynamic'     => array(
								'active' => true,
							),
						)
					);
				$this->end_controls_tab();
			$this->end_controls_tabs();

$this->add_control(
				'hide_overlay',
				array(
					'type'        => Controls_Manager::SWITCHER,
					'label'       => __( 'Hide Overlay', 'porto-functionality' ),
					'description' => __( 'Turn on to hide hover overlay.', 'porto-functionality' ),
					'separator'   => 'before',
					'condition'  => array(
						'movement!' => 'hover',
					),
				)
			);

$this->add_control(
				'overlay_color',
				array(
					'type'      => Controls_Manager::COLOR,
					'label'     => __( 'Overlay Color', 'porto-functionality' ),
					'selectors' => array(
						'.elementor-element-{{ID}} .porto-image-comparison-overlay:hover' => 'background-color: {{VALUE}};',
					),
					'conditions'  => array(
						'relation' => 'and',
						'terms'    => array(
							array(
								'name'     => 'hide_overlay',
								'operator' => '!=',
								'value'    => 'yes',
							),
							array(
								'name'     => 'movement',
								'operator' => '!=',
								'value'    => 'hover',
							),
						)
					),
				)
			);

$this->add_control(
				'orientation',
				array(
					'label'              => __( 'Handle Orientation', 'porto-functionality' ),
					'type'               => Controls_Manager::CHOOSE,
					'options'            => array(
						'horizontal' => array(
							'title' => __( 'Horizontal', 'porto-functionality' ),
							'icon'  => 'eicon-navigation-horizontal',
						),
						'vertical'   => array(
							'title' => __( 'Vertical', 'porto-functionality' ),
							'icon'  => 'eicon-navigation-vertical',
						),
					),
					'default'            => 'horizontal',
					'frontend_available' => true,
				)
			);

$this->add_control(
				'offset',
				array(
					'type'        => Controls_Manager::SLIDER,
					'label'       => __( 'Handle Offset', 'porto-functionality' ),
					'description' => __( 'Controls the left or top position of the handle on page load.', 'porto-functionality' ),
					'range'       => array(
						'px' => array(
							'step' => 1,
							'min'  => 0,
							'max'  => 100,
						),
					),
					'default'     => array(
						'unit' => 'px',
						'size' => 50,
					),
					'size_units'  => array(
						'px',
					),
				)
			);

$this->add_control(
				'movement',
				array(
					'label'              => __( 'Handle Movement Control', 'porto-functionality' ),
					'type'               => Controls_Manager::CHOOSE,
					'options'            => array(
						'click'       => array(
							'title' => __( 'Drag & Click', 'porto-functionality' ),
							'icon'  => 'eicon-click',
						),
						'handle_only' => array(
							'title' => __( 'Drag only', 'porto-functionality' ),
							'icon'  => 'eicon-drag-n-drop',
						),
						'hover'       => array(
							'title' => __( 'Hover', 'porto-functionality' ),
							'icon'  => 'eicon-cursor-move',
						),
					),
					'default'            => 'click',
					'frontend_available' => true,
				)
			);

$this->add_control(
				'icon_cl',
				array(
					'label'       => __( 'Icon Class (ex: fas fa-pencil-alt)', 'porto-functionality' ),
					'type'        => Controls_Manager::TEXT,
					'default'     => '',
					'description' => __( 'Inputs the css class of the icon which is located in handle.', 'porto-functionality' ),
				)
			);

$this->end_controls_section();

$this->start_controls_section(
			'section_handle_style',
			array(
				'tab'   => Controls_Manager::TAB_STYLE,
				'label' => __( 'Handle', 'porto-functionality' ),
			)
		);
			$this->add_control(
				'handle_color',
				array(
					'type'      => Controls_Manager::COLOR,
					'label'     => __( 'Handle Color', 'porto-functionality' ),
					'selectors' => array(
						'.elementor-element-{{ID}} .porto-image-comparison-handle' => 'color: {{VALUE}};',
					),
				)
			);

$this->add_control(
				'handle_bg_color',
				array(
					'type'      => Controls_Manager::COLOR,
					'label'     => __( 'Handle Background Color', 'porto-functionality' ),
					'selectors' => array(
						'.elementor-element-{{ID}} .porto-image-comparison-handle' => 'background-color: {{VALUE}};',
					),
				)
			);

$this->add_control(
				'handle_icon_sz',
				array(
					'type'       => Controls_Manager::SLIDER,
					'label'      => __( 'Icon Size', 'porto-functionality' ),
					'size_units' => array(
						'px',
						'em',
					),
					'condition'  => array(
						'icon_cl!' => '',
					),
					'selectors'  => array(
						'.elementor-element-{{ID}} .porto-image-comparison-handle' => 'font-size: {{SIZE}}{{UNIT}};',
					),
				)
			);

$this->add_control(
				'handle_sz',
				array(
					'type'       => Controls_Manager::SLIDER,
					'label'      => __( 'Handle Size', 'porto-functionality' ),
					'size_units' => array(
						'px',
						'em',
					),
					'selectors'  => array(
						'.elementor-element-{{ID}} .porto-image-comparison-handle' => '--porto-handle-sz: {{SIZE}}{{UNIT}};',
					),
				)
			);

$this->add_control(
				'handle_thickness',
				array(
					'type'       => Controls_Manager::SLIDER,
					'label'      => __( 'Thickness', 'porto-functionality' ),
					'size_units' => array(
						'px',
						'em',
					),
					'selectors'  => array(
						'.elementor-element-{{ID}} .porto-image-comparison-handle' => '--porto-handle-bar: {{SIZE}}{{UNIT}};',
					),
				)
			);

$this->add_control(
				'handle_radius',
				array(
					'type'       => Controls_Manager::SLIDER,
					'label'      => __( 'Radius', 'porto-functionality' ),
					'size_units' => array(
						'px',
						'%',
					),
					'selectors'  => array(
						'.elementor-element-{{ID}} .porto-image-comparison-handle' => 'border-radius: {{SIZE}}{{UNIT}};',
					),
				)
			);
		$this->end_controls_section();
	}

protected function render() {
		$atts = $this->get_settings_for_display();

if ( $template = porto_shortcode_template( 'porto_image_comparison' ) ) {
			if ( is_array( $atts['before_img'] ) && ! empty( $atts['before_img']['id'] ) ) {
				$atts['before_img'] = (int) $atts['before_img']['id'];
			} else if ( is_array( $atts['before_img'] ) && ! empty( $atts['before_img']['url'] ) ) {
				$atts['before_img'] = $atts['before_img']['url'];
			}
			if ( is_array( $atts['after_img'] ) && ! empty( $atts['after_img']['id'] ) ) {
				$atts['after_img'] = (int) $atts['after_img']['id'];
			} else if ( is_array( $atts['after_img'] ) && ! empty( $atts['after_img']['url'] ) ) {
				$atts['after_img'] = $atts['after_img']['url'];
			}

if ( is_array( $atts['offset'] ) && isset( $atts['offset']['size'] ) ) {
				$atts['offset'] = $atts['offset']['size'];
			}

include $template;
		}
	}

protected function content_template() {
		?>
		<#
			view.addRenderAttribute( 'wrapper', 'class', 'porto-image-comparison' );
			if ( 'vertical' == settings.orientation ) {
				view.addRenderAttribute( 'wrapper', 'class', 'porto-image-comparison-vertical' );
			}
			view.addRenderAttribute( 'wrapper', 'data-orientation', settings.orientation );
			view.addRenderAttribute( 'wrapper', 'data-offset', settings.offset.size ? parseInt( settings.offset.size, 10 ) / 100 : 0.5 );
			view.addRenderAttribute( 'wrapper', 'data-handle-action', settings.movement ? settings.movement : 'click' );

if ( settings.icon_cl ) {
				view.addRenderAttribute( 'handle', 'class', settings.icon_cl );
			} else {
				view.addRenderAttribute( 'handle', 'class', 'porto-compare-icon' );
			}

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