swiper/cjs/components/core/update/updateSlidesProgress.js

Most modern mobile touch slider and framework with hardware accelerated transitions

"use strict";

exports.__esModule = true;
exports.default = updateSlidesProgress;

var _dom = _interopRequireDefault(require("../../../utils/dom"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function updateSlidesProgress(translate) {
  if (translate === void 0) {
    translate = this && this.translate || 0;
  }

  var swiper = this;
  var params = swiper.params;
  var slides = swiper.slides,
      rtl = swiper.rtlTranslate;
  if (slides.length === 0) return;
  if (typeof slides[0].swiperSlideOffset === 'undefined') swiper.updateSlidesOffset();
  var offsetCenter = -translate;
  if (rtl) offsetCenter = translate; // Visible Slides

  slides.removeClass(params.slideVisibleClass);
  swiper.visibleSlidesIndexes = [];
  swiper.visibleSlides = [];

  for (var i = 0; i < slides.length; i += 1) {
    var slide = slides[i];
    var slideProgress = (offsetCenter + (params.centeredSlides ? swiper.minTranslate() : 0) - slide.swiperSlideOffset) / (slide.swiperSlideSize + params.spaceBetween);

    if (params.watchSlidesVisibility || params.centeredSlides && params.autoHeight) {
      var slideBefore = -(offsetCenter - slide.swiperSlideOffset);
      var slideAfter = slideBefore + swiper.slidesSizesGrid[i];
      var isVisible = slideBefore >= 0 && slideBefore < swiper.size - 1 || slideAfter > 1 && slideAfter <= swiper.size || slideBefore <= 0 && slideAfter >= swiper.size;

      if (isVisible) {
        swiper.visibleSlides.push(slide);
        swiper.visibleSlidesIndexes.push(i);
        slides.eq(i).addClass(params.slideVisibleClass);
      }
    }

    slide.progress = rtl ? -slideProgress : slideProgress;
  }

  swiper.visibleSlides = (0, _dom.default)(swiper.visibleSlides);
}