jquery - Visual Composer 图像轮播无法正确循环

Question

这是我的第一篇文章，所以请原谅我的英语。

我对 Image Carousel VC 组件有疑问。我需要设置诸如标识滑块（连续 5 个徽标）之类的东西，当我将其设置为显示 6 个图像中的 5 个时，最后会有一个间隙（例如 4 个空格）。

我的设置：

添加了 6 张图片，每次查看幻灯片：5，滑块循环：是

目标是设置循环播放，图像之间没有任何空格。

还有一个响应问题。当我调整浏览器窗口图像的大小时，它们的比例会丢失（宽度是缩放百分比，高度是固定的）。

谁能帮我解决这个问题？

Answer 1

将Humberto Silva 的帖子移植到 Stack Overflow 的答案中，似乎没有内置的方法可以做到这一点，但 JavaScript 中有一种解决方法。

vc_custominfiniteloop首先，向轮播元素添加一个额外的类。

然后，在加载 jQuery 和 Visual Composer javascript 后添加以下 JavaScript 代码：

/*
Turn Visual Composer Image Carousel into Visual Composer Infinite Image Carousel
Include before the </head> tag on yout theme's header.php 
Read the detailed step-by-step at https://humbertosilva.com/visual-composer-infinite-image-carousel/
*/

// auxiliary code to create triggers for the add and remove class for later use
(function($){
$.each(["addClass","removeClass"],function(i,methodname){
    var oldmethod = $.fn[methodname];
    $.fn[methodname] = function(){
          oldmethod.apply( this, arguments );
          this.trigger(methodname+"change");
          return this;
    }
});
})(jQuery);

// main function for the infinite loop
function vc_custominfiniteloop_init(vc_cil_element_id){

  var vc_element = '#' + vc_cil_element_id; // because we're using this more than once let's create a variable for it
  window.maxItens = jQuery(vc_element).data('per-view'); // max visible items defined
  window.addedItens = 0; // auxiliary counter for added itens to the end 

  // go to slides and duplicate them to the end to fill space
  jQuery(vc_element).find('.vc_carousel-slideline-inner').find('.vc_item').each(function(){
    // we only need to duplicate the first visible images
    if (window.addedItens < window.maxItens) {
      if (window.addedItens == 0 ) {
        // the fisrt added slide will need a trigger so we know it ended and make it "restart" without animation
        jQuery(this).clone().addClass('vc_custominfiniteloop_restart').removeClass('vc_active').appendTo(jQuery(this).parent());            
      } else {
        jQuery(this).clone().removeClass('vc_active').appendTo(jQuery(this).parent());         
      }
      window.addedItens++;
    }
  });

  // add the trigger so we know when to "restart" the animation without the user knowing about it
  jQuery('.vc_custominfiniteloop_restart').bind('addClasschange', null, function(){

    // navigate to the carousel element , I know, its ugly ...
    var vc_carousel = jQuery(this).parent().parent().parent().parent();

    // first we temporarily change the animation speed to zero
    jQuery(vc_carousel).data('vc.carousel').transition_speed = 0;

    // make the slider go to the first slide without animation and because the fist set of images shown
    // are the same that are being shown now the slider is now "restarted" without that being visible 
    jQuery(vc_carousel).data('vc.carousel').to(0);

    // allow the carousel to go to the first image and restore the original speed 
    setTimeout("vc_cil_restore_transition_speed('"+jQuery(vc_carousel).prop('id')+"')",100);
  });

}

// restore original speed setting of vc_carousel
function vc_cil_restore_transition_speed(element_id){
// after inspecting the original source code the value of 600 is defined there so we put back the original here
jQuery('#' + element_id).data('vc.carousel').transition_speed = 600; 
}

// init     
jQuery(document).ready(function(){    
  // find all vc_carousel with the defined class and turn them into infine loop
  jQuery('.vc_custominfiniteloop').find('div[data-ride="vc_carousel"]').each(function(){
    // allow time for the slider to be built on the page
    // because the slider is "long" we can wait a bit before adding images and events needed  
    var vc_cil_element = jQuery(this).prop("id");
    setTimeout("vc_custominfiniteloop_init('"+vc_cil_element+"')",2000);      
  });    
});

如果您遇到问题，请尝试使用 PHP_INT_MAX 并根据 jQuery 将其排入队列，例如：

function enqueue_my_scripts()
{
    // This example expects you to create a file with the JavaScript above in wp-content/themes/yourtheme/assets/js/infinite_visualcomposer_carousel.js
    wp_enqueue_script('infinite-vs-carousel',  get_stylesheet_directory_uri() . 'assets/js/infinite_visualcomposer_carousel.js', array('jquery'), filemtime(get_stylesheet_directory() . '/assets/js/infinite_visualcomposer_carousel.js'), true);
}
add_action('wp_enqueue_scripts', 'enqueue_my_scripts', PHP_INT_MAX);

所有功劳归于 Humberto Silva，我只是将这个答案移植到这里以保存解决方案，以防博客离线。

Answer 2

/* 将 Visual Composer Image Carousel 转换为 Visual Composer Infinite Image Carousel Include before the tag on yout theme's header.php 阅读详细步骤https://humbertosilva.com/visual-composer-infinite-image-carousel/ */

    // auxiliary code to create triggers for the add and remove class for later use
    (function($){
    $.each(["addClass","removeClass"],function(i,methodname){
        var oldmethod = $.fn[methodname];
        $.fn[methodname] = function(){
              oldmethod.apply( this, arguments );
              this.trigger(methodname+"change");
              return this;
        }
    });
    })(jQuery);

    // init     
    jQuery(document).ready(function(){    
      // find all vc_carousel with the defined class and turn them into infine loop
      jQuery('.vc_custominfiniteloop').find('div[data-ride="vc_carousel"]').each(function(){
        // allow time for the slider to be built on the page
        // because the slider is "long" we can wait a bit before adding images and events needed  
        var vc_cil_element = jQuery(this).prop("id");
        
        setTimeout(vc_custominfiniteloop_init(vc_cil_element),3000);      
      });    
    });

    // main function for the infinite loop
    function vc_custominfiniteloop_init(vc_cil_element_id){

      var vc_element = '#' + vc_cil_element_id; // because we're using this more than once let's create a variable for it
     
      window.maxItens = jQuery(vc_element).data('per-view'); // max visible items defined
      window.addedItens = 0; // auxiliary counter for added itens to the end 

      // go to slides and duplicate them to the end to fill space
      jQuery(vc_element).find('.vc_carousel-slideline-inner').find('.vc_item').each(function(){
        // we only need to duplicate the first visible images
        if (window.addedItens < window.maxItens) {
          if (window.addedItens == 0 ) {
            // the fisrt added slide will need a trigger so we know it ended and make it "restart" without animation
            jQuery(this).clone().addClass('vc_custominfiniteloop_restart').removeClass('vc_active').appendTo(jQuery(this).parent());            
          } else {
            jQuery(this).clone().removeClass('vc_active').appendTo(jQuery(this).parent());         
          }
          window.addedItens++;
        }
      });

      // add the trigger so we know when to "restart" the animation without the user knowing about it
      jQuery('.vc_custominfiniteloop_restart').bind('addClasschange', null, function(){

        // navigate to the carousel element , I know, its ugly ...
        var vc_carousel = jQuery(this).parent().parent().parent().parent();

        // first we temporarily change the animation speed to zero
        jQuery(vc_carousel).data('vc.carousel').transition_speed = 0;

        // make the slider go to the first slide without animation and because the fist set of images shown
        // are the same that are being shown now the slider is now "restarted" without that being visible 
        jQuery(vc_carousel).data('vc.carousel').to(0);

        // allow the carousel to go to the first image and restore the original speed 
        setTimeout(vc_cil_restore_transition_speed(jQuery(vc_carousel).prop('id')),5000);
      });

      // // restore original speed setting of vc_carousel
    function vc_cil_restore_transition_speed(element_id){
    // after inspecting the original source code the value of 600 is defined there so we put back the original here
    jQuery('#' + element_id).data('vc.carousel').transition_speed = 5000; 
    }

    }

所有功劳归于 Humberto Silva，我只是将这个答案移植到这里以保存解决方案，以防博客离线。

刚刚根据我的需要对此代码进行了一些修复。所以不要费心问我为什么要粘贴相同的代码....