ion-slides

概要(CONTENTS)

Ionic4项目中我们可以使用Ionic4轮播图组件ion-slides对项目进行布局。

ion-slides官方文档地址:https://ionicframework.com/docs/api/slides

The Slides component is a multi-section container. Each section can be swiped or dragged between. It contains any number of Slide components.

Adopted from Swiper.js: The most modern mobile touch slider and framework with hardware accelerated transitions.

http://www.idangero.us/swiper/

Copyright 2016, Vladimir Kharlampidi The iDangero.us http://www.idangero.us/

Licensed under MIT

Custom Animations

By default, Ionic slides use the built-in slide animation effect. Custom animations can be provided via the options property. Examples of other animations can be found below.

Coverflow

const slidesOpts = {
  slidesPerView: 3,
  coverflowEffect: {
    rotate: 50,
    stretch: 0,
    depth: 100,
    modifier: 1,
    slideShadows: true,
  },
  on: {
    beforeInit() {
      const swiper = this;

      swiper.classNames.push(`${swiper.params.containerModifierClass}coverflow`);
      swiper.classNames.push(`${swiper.params.containerModifierClass}3d`);

      swiper.params.watchSlidesProgress = true;
      swiper.originalParams.watchSlidesProgress = true;
    },
    setTranslate() {
      const swiper = this;
      const {
        width: swiperWidth, height: swiperHeight, slides, $wrapperEl, slidesSizesGrid, $
      } = swiper;
      const params = swiper.params.coverflowEffect;
      const isHorizontal = swiper.isHorizontal();
      const transform$$1 = swiper.translate;
      const center = isHorizontal ? -transform$$1 + (swiperWidth / 2) : -transform$$1 + (swiperHeight / 2);
      const rotate = isHorizontal ? params.rotate : -params.rotate;
      const translate = params.depth;
      // Each slide offset from center
      for (let i = 0, length = slides.length; i < length; i += 1) {
        const $slideEl = slides.eq(i);
        const slideSize = slidesSizesGrid[i];
        const slideOffset = $slideEl[0].swiperSlideOffset;
        const offsetMultiplier = ((center - slideOffset - (slideSize / 2)) / slideSize) * params.modifier;

         let rotateY = isHorizontal ? rotate * offsetMultiplier : 0;
        let rotateX = isHorizontal ? 0 : rotate * offsetMultiplier;
        // var rotateZ = 0
        let translateZ = -translate * Math.abs(offsetMultiplier);

         let translateY = isHorizontal ? 0 : params.stretch * (offsetMultiplier);
        let translateX = isHorizontal ? params.stretch * (offsetMultiplier) : 0;

         // Fix for ultra small values
        if (Math.abs(translateX) < 0.001) translateX = 0;
        if (Math.abs(translateY) < 0.001) translateY = 0;
        if (Math.abs(translateZ) < 0.001) translateZ = 0;
        if (Math.abs(rotateY) < 0.001) rotateY = 0;
        if (Math.abs(rotateX) < 0.001) rotateX = 0;

         const slideTransform = `translate3d(${translateX}px,${translateY}px,${translateZ}px)  rotateX(${rotateX}deg) rotateY(${rotateY}deg)`;

         $slideEl.transform(slideTransform);
        $slideEl[0].style.zIndex = -Math.abs(Math.round(offsetMultiplier)) + 1;
        if (params.slideShadows) {
          // Set shadows
          let $shadowBeforeEl = isHorizontal ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top');
          let $shadowAfterEl = isHorizontal ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom');
          if ($shadowBeforeEl.length === 0) {
            $shadowBeforeEl = swiper.$(`
${isHorizontal ? 'left' : 'top'}">
`
); $slideEl.append($shadowBeforeEl); } if ($shadowAfterEl.length === 0) { $shadowAfterEl = swiper.$(`
${isHorizontal ? 'right' : 'bottom'}">
`
); $slideEl.append($shadowAfterEl); } if ($shadowBeforeEl.length) $shadowBeforeEl[0].style.opacity = offsetMultiplier > 0 ? offsetMultiplier : 0; if ($shadowAfterEl.length) $shadowAfterEl[0].style.opacity = (-offsetMultiplier) > 0 ? -offsetMultiplier : 0; } } // Set correct perspective for IE10 if (swiper.support.pointerion-slides 事件(Events) || swiper.support.prefixedPointerion-slides 事件(Events)) { const ws = $wrapperEl[0].style; ws.perspectiveOrigin = `${center}px 50%`; } }, setTransition(duration) { const swiper = this; swiper.slides .transition(duration) .find('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left') .transition(duration); } } }

Cube

const slidesOpts = {
  grabCursor: true,
  cubeEffect: {
    shadow: true,
    slideShadows: true,
    shadowOffset: 20,
    shadowScale: 0.94,
  },
  on: {
    beforeInit: function() {
      const swiper = this;
      swiper.classNames.push(`${swiper.params.containerModifierClass}cube`);
      swiper.classNames.push(`${swiper.params.containerModifierClass}3d`);

      const overwriteParams = {
        slidesPerView: 1,
        slidesPerColumn: 1,
        slidesPerGroup: 1,
        watchSlidesProgress: true,
        resistanceRatio: 0,
        spaceBetween: 0,
        centeredSlides: false,
        virtualTranslate: true,
      };

      this.params = Object.assign(this.params, overwriteParams);
      this.originalParams = Object.assign(this.originalParams, overwriteParams);
    },
    setTranslate: function() {
      const swiper = this;
      const {
        $el, $wrapperEl, slides, width: swiperWidth, height: swiperHeight, rtlTranslate: rtl, size: swiperSize,
      } = swiper;
      const params = swiper.params.cubeEffect;
      const isHorizontal = swiper.isHorizontal();
      const isVirtual = swiper.virtual && swiper.params.virtual.enabled;
      let wrapperRotate = 0;
      let $cubeShadowEl;
      if (params.shadow) {
        if (isHorizontal) {
          $cubeShadowEl = $wrapperEl.find('.swiper-cube-shadow');
          if ($cubeShadowEl.length === 0) {
            $cubeShadowEl = swiper.$('
'
); $wrapperEl.append($cubeShadowEl); } $cubeShadowEl.css({ height: `${swiperWidth}px` }); } else { $cubeShadowEl = $el.find('.swiper-cube-shadow'); if ($cubeShadowEl.length === 0) { $cubeShadowEl = swiper.$('
'
); $el.append($cubeShadowEl); } } } for (let i = 0; i < slides.length; i += 1) { const $slideEl = slides.eq(i); let slideIndex = i; if (isVirtual) { slideIndex = parseInt($slideEl.attr('data-swiper-slide-index'), 10); } let slideAngle = slideIndex * 90; let round = Math.floor(slideAngle / 360); if (rtl) { slideAngle = -slideAngle; round = Math.floor(-slideAngle / 360); } const progress = Math.max(Math.min($slideEl[0].progress, 1), -1); let tx = 0; let ty = 0; let tz = 0; if (slideIndex % 4 === 0) { tx = -round * 4 * swiperSize; tz = 0; } else if ((slideIndex - 1) % 4 === 0) { tx = 0; tz = -round * 4 * swiperSize; } else if ((slideIndex - 2) % 4 === 0) { tx = swiperSize + (round * 4 * swiperSize); tz = swiperSize; } else if ((slideIndex - 3) % 4 === 0) { tx = -swiperSize; tz = (3 * swiperSize) + (swiperSize * 4 * round); } if (rtl) { tx = -tx; } if (!isHorizontal) { ty = tx; tx = 0; } const transform$$1 = `rotateX(${isHorizontal ? 0 : -slideAngle}deg) rotateY(${isHorizontal ? slideAngle : 0}deg) translate3d(${tx}px, ${ty}px, ${tz}px)`; if (progress <= 1 && progress > -1) { wrapperRotate = (slideIndex * 90) + (progress * 90); if (rtl) wrapperRotate = (-slideIndex * 90) - (progress * 90); } $slideEl.transform(transform$$1); if (params.slideShadows) { // Set shadows let shadowBefore = isHorizontal ? $slideEl.find('.swiper-slide-shadow-left') : $slideEl.find('.swiper-slide-shadow-top'); let shadowAfter = isHorizontal ? $slideEl.find('.swiper-slide-shadow-right') : $slideEl.find('.swiper-slide-shadow-bottom'); if (shadowBefore.length === 0) { shadowBefore = swiper.$(`
${isHorizontal ? 'left' : 'top'}">
`
); $slideEl.append(shadowBefore); } if (shadowAfter.length === 0) { shadowAfter = swiper.$(`
${isHorizontal ? 'right' : 'bottom'}">
`
); $slideEl.append(shadowAfter); } if (shadowBefore.length) shadowBefore[0].style.opacity = Math.max(-progress, 0); if (shadowAfter.length) shadowAfter[0].style.opacity = Math.max(progress, 0); } } $wrapperEl.css({ '-webkit-transform-origin': `50% 50% -${swiperSize / 2}px`, '-moz-transform-origin': `50% 50% -${swiperSize / 2}px`, '-ms-transform-origin': `50% 50% -${swiperSize / 2}px`, 'transform-origin': `50% 50% -${swiperSize / 2}px`, }); if (params.shadow) { if (isHorizontal) { $cubeShadowEl.transform(`translate3d(0px, ${(swiperWidth / 2) + params.shadowOffset}px, ${-swiperWidth / 2}px) rotateX(90deg) rotateZ(0deg) scale(${params.shadowScale})`); } else { const shadowAngle = Math.abs(wrapperRotate) - (Math.floor(Math.abs(wrapperRotate) / 90) * 90); const multiplier = 1.5 - ( (Math.sin((shadowAngle * 2 * Math.PI) / 360) / 2) + (Math.cos((shadowAngle * 2 * Math.PI) / 360) / 2) ); const scale1 = params.shadowScale; const scale2 = params.shadowScale / multiplier; const offset$$1 = params.shadowOffset; $cubeShadowEl.transform(`scale3d(${scale1}, 1, ${scale2}) translate3d(0px, ${(sw