99 lines
4.2 KiB
JavaScript
99 lines
4.2 KiB
JavaScript
import createShadow from '../../shared/create-shadow.js';
|
|
import effectInit from '../../shared/effect-init.js';
|
|
import effectTarget from '../../shared/effect-target.js';
|
|
import { getSlideTransformEl } from '../../shared/utils.js';
|
|
export default function EffectCoverflow({
|
|
swiper,
|
|
extendParams,
|
|
on
|
|
}) {
|
|
extendParams({
|
|
coverflowEffect: {
|
|
rotate: 50,
|
|
stretch: 0,
|
|
depth: 100,
|
|
scale: 1,
|
|
modifier: 1,
|
|
slideShadows: true
|
|
}
|
|
});
|
|
const setTranslate = () => {
|
|
const {
|
|
width: swiperWidth,
|
|
height: swiperHeight,
|
|
slides,
|
|
slidesSizesGrid
|
|
} = swiper;
|
|
const params = swiper.params.coverflowEffect;
|
|
const isHorizontal = swiper.isHorizontal();
|
|
const transform = swiper.translate;
|
|
const center = isHorizontal ? -transform + swiperWidth / 2 : -transform + 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[i];
|
|
const slideSize = slidesSizesGrid[i];
|
|
const slideOffset = slideEl.swiperSlideOffset;
|
|
const centerOffset = (center - slideOffset - slideSize / 2) / slideSize;
|
|
const offsetMultiplier = typeof params.modifier === 'function' ? params.modifier(centerOffset) : centerOffset * params.modifier;
|
|
let rotateY = isHorizontal ? rotate * offsetMultiplier : 0;
|
|
let rotateX = isHorizontal ? 0 : rotate * offsetMultiplier;
|
|
// var rotateZ = 0
|
|
let translateZ = -translate * Math.abs(offsetMultiplier);
|
|
let stretch = params.stretch;
|
|
// Allow percentage to make a relative stretch for responsive sliders
|
|
if (typeof stretch === 'string' && stretch.indexOf('%') !== -1) {
|
|
stretch = parseFloat(params.stretch) / 100 * slideSize;
|
|
}
|
|
let translateY = isHorizontal ? 0 : stretch * offsetMultiplier;
|
|
let translateX = isHorizontal ? stretch * offsetMultiplier : 0;
|
|
let scale = 1 - (1 - params.scale) * Math.abs(offsetMultiplier);
|
|
|
|
// 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;
|
|
if (Math.abs(scale) < 0.001) scale = 0;
|
|
const slideTransform = `translate3d(${translateX}px,${translateY}px,${translateZ}px) rotateX(${rotateX}deg) rotateY(${rotateY}deg) scale(${scale})`;
|
|
const targetEl = effectTarget(params, slideEl);
|
|
targetEl.style.transform = slideTransform;
|
|
slideEl.style.zIndex = -Math.abs(Math.round(offsetMultiplier)) + 1;
|
|
if (params.slideShadows) {
|
|
// Set shadows
|
|
let shadowBeforeEl = isHorizontal ? slideEl.querySelector('.swiper-slide-shadow-left') : slideEl.querySelector('.swiper-slide-shadow-top');
|
|
let shadowAfterEl = isHorizontal ? slideEl.querySelector('.swiper-slide-shadow-right') : slideEl.querySelector('.swiper-slide-shadow-bottom');
|
|
if (!shadowBeforeEl) {
|
|
shadowBeforeEl = createShadow(params, slideEl, isHorizontal ? 'left' : 'top');
|
|
}
|
|
if (!shadowAfterEl) {
|
|
shadowAfterEl = createShadow(params, slideEl, isHorizontal ? 'right' : 'bottom');
|
|
}
|
|
if (shadowBeforeEl) shadowBeforeEl.style.opacity = offsetMultiplier > 0 ? offsetMultiplier : 0;
|
|
if (shadowAfterEl) shadowAfterEl.style.opacity = -offsetMultiplier > 0 ? -offsetMultiplier : 0;
|
|
}
|
|
}
|
|
};
|
|
const setTransition = duration => {
|
|
const transformElements = swiper.slides.map(slideEl => getSlideTransformEl(slideEl));
|
|
transformElements.forEach(el => {
|
|
el.style.transitionDuration = `${duration}ms`;
|
|
el.querySelectorAll('.swiper-slide-shadow-top, .swiper-slide-shadow-right, .swiper-slide-shadow-bottom, .swiper-slide-shadow-left').forEach(shadowEl => {
|
|
shadowEl.style.transitionDuration = `${duration}ms`;
|
|
});
|
|
});
|
|
};
|
|
effectInit({
|
|
effect: 'coverflow',
|
|
swiper,
|
|
on,
|
|
setTranslate,
|
|
setTransition,
|
|
perspective: () => true,
|
|
overwriteParams: () => ({
|
|
watchSlidesProgress: true
|
|
})
|
|
});
|
|
} |