完成轮播图组件

Readme.md

@@ -49,6 +49,7 @@
 - [x] `wc-code`代码高亮插件
 - [x] `wc-scroll`滚动组件
 - [x] `wc-silder`面包屑组件
+- [x] `wc-swipe`轮播图组件
 - [x] `wc-breadcrumb`滑块组件
 - [ ] `wc-progress`进度条组件
 - [ ] `wc-tree`树形菜单组件

src/swipe/index.js

@@ -1,10 +1,10 @@
 /**
- * {}
+ * 轮播图组件
  * @author chensbox<chensbox@foxmail.com>
  * @date 2023/03/26 16:14:10
  */
 
-import { css, html, Component, nextTick } from '@bd/core'
+import { css, html, Component, nextTick, styleMap } from '@bd/core'
 import '../icon/index.js'
 const CARD_SCALE = 0.83
 function createWatcher(object, key, effect) {
@@ -19,7 +19,7 @@ function createWatcher(object, key, effect) {
     }
   })
 }
-class Carousel extends Component {
+class Swipe extends Component {
   static props = {
     'initial-index': {
       type: Number,
@@ -34,7 +34,7 @@ class Carousel extends Component {
     },
     trigger: {
       type: String,
-      default: 'hover'
+      default: 'hover' // hover or click
     },
     autoplay: {
       type: Boolean,
@@ -47,23 +47,26 @@ class Carousel extends Component {
       type: Number,
       default: 3000
     },
-    'indicator-position': { String, attributes: false },
     indicator: {
       type: Boolean,
       default: true
     },
     arrow: {
       type: String,
-      default: 'hover'
+      default: 'hover' // hover or alway
+    },
+    type: {
+      type: String,
+      default: '', // '' or card
+      attributes: false
     },
-    type: { type: String, default: '', attributes: false },
     loop: {
       type: Boolean,
       default: true
     },
     direction: {
       type: String,
-      default: 'horizontal'
+      default: 'horizontal' // horizontal or  vertical
     },
     'pause-on-hover': {
       type: Boolean,
@@ -77,7 +80,34 @@ class Carousel extends Component {
       display: block;
       width: 100%;
     }
-
+    :host([direction='vertical']) {
+      .indicator {
+        flex-direction: column;
+        left: calc(100% - 26px);
+        top: 50%;
+        height: 80%;
+        width: 26px;
+        transform: translatey(-50%);
+        li {
+          width: 26px;
+          height: 24px;
+          margin: 5px 0;
+          &::after {
+            position: absolute;
+            content: '';
+            left: calc(50% - 2px);
+            top: 0;
+            height: 100%;
+            width: 2px;
+            background-color: #fff;
+            opacity: 0.48;
+          }
+          &.active::after {
+            opacity: 1;
+          }
+        }
+      }
+    }
     .toggle-btn {
       z-index: 4;
       user-select: none;
@@ -86,7 +116,7 @@ class Carousel extends Component {
       display: flex;
       align-items: center;
       justify-content: center;
-      opacity: 0.8;
+      opacity: 0;
       width: 33px;
       height: 33px;
       font-size: 24px;
@@ -95,6 +125,11 @@ class Carousel extends Component {
       border-color: #fff;
       border-radius: 50%;
       --size: 12px;
+      transition: opacity linear 0.2s;
+
+      &:hover {
+        opacity: 0.8 !important;
+      }
     }
     .left,
     .right {
@@ -102,10 +137,43 @@ class Carousel extends Component {
       transform: translateY(-50%);
     }
     .left {
-      left: 5%;
+      left: 3%;
     }
     .right {
-      right: 5%;
+      right: 3%;
+    }
+    .indicator {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      position: absolute;
+      width: 80%;
+      bottom: 0px;
+      left: 50%;
+      transform: translateX(-50%);
+      li {
+        position: relative;
+        width: 24px;
+        height: 26px;
+        margin: 0 5px;
+        list-style: none;
+        &::after {
+          position: absolute;
+          content: '';
+          left: 0;
+          top: calc(50% - 2px);
+          width: 100%;
+          height: 2px;
+          background-color: #fff;
+          opacity: 0.48;
+        }
+        &:hover {
+          cursor: pointer;
+        }
+        &.active::after {
+          opacity: 1;
+        }
+      }
     }
   `
   items = []
@@ -114,7 +182,7 @@ class Carousel extends Component {
 
   updateItems() {
     this.items = Array.from(this.children).filter(
-      item => item.tagName === 'WC-CAROUSEL-ITEM'
+      item => item.tagName === 'WC-SWIPE-ITEM'
     )
     nextTick(() => this.$requestUpdate())
   }
@@ -147,6 +215,7 @@ class Carousel extends Component {
     this.items.forEach((item, index) => {
       item.translateItem(index, this.activeIndex, oldIndex)
     })
+    nextTick(() => this.$requestUpdate())
   }
   setActiveItem(index) {
     const now = Date.now()
@@ -176,12 +245,18 @@ class Carousel extends Component {
     if (oldIndex !== this.activeIndex) {
       this.resetItemPosition(oldIndex)
     }
-    // this.resetItemPosition(oldIndex)
     this.resetTimer()
+    nextTick(() => this.$requestUpdate())
   }
-  handleIndicatorHover(index) {
+  handleIndicatorHover(event) {
+    let index = +event.target.getAttribute('index')
     if (this.trigger === 'hover' && index !== this.activeIndex) {
-      // this.activeIndex = index
+      this.setActiveItem(index)
+    }
+  }
+  handleClickIndicator(event) {
+    let index = +event.target.getAttribute('index')
+    if (this.trigger === 'click' && index !== this.activeIndex) {
       this.setActiveItem(index)
     }
   }
@@ -191,6 +266,18 @@ class Carousel extends Component {
   next() {
     this.setActiveItem(this.activeIndex + 1)
   }
+  showArrow() {
+    this.showArrowBtn = true
+    this.$requestUpdate()
+  }
+  hideArrow() {
+    this.showArrowBtn = false
+    this.$requestUpdate()
+  }
+  handleSlotChange() {
+    this.updateItems()
+    this.resetItemPosition()
+  }
   mounted() {
     this.updateItems()
     nextTick(() => {
@@ -202,6 +289,18 @@ class Carousel extends Component {
       this.resizeObserve.observe(this)
       this.startTimer()
     })
+
+    if (this['pause-on-hover']) {
+      this.$on('mouseenter', () => this.pauseTimer())
+      this.$on('mouseleave', () => this.startTimer())
+    }
+    if (this.arrow === 'hover') {
+      this.$on('mouseenter', () => this.showArrow())
+      this.$on('mouseleave', () => this.hideArrow())
+    } else if (this.arrow === 'alway') {
+      this.showArrowBtn = true
+      this.$requestUpdate()
+    }
   }
   unmounted() {
     this.resizeObserve.disconnect()
@@ -209,23 +308,46 @@ class Carousel extends Component {
     this.pauseTimer()
   }
   render() {
+    let styles = styleMap({
+      opacity: this.showArrowBtn ? 0.5 : 0
+    })
+    let toggleBtns =
+      this.direction === 'horizontal'
+        ? html`
+            <div class="left toggle-btn" style=${styles} @click=${this.prev}>
+              <wc-icon name="left"></wc-icon>
+            </div>
+            <div class="right toggle-btn" style=${styles} @click=${this.next}>
+              <wc-icon name="right"></wc-icon>
+            </div>
+          `
+        : ''
+
+    let indicator = this.indicator
+      ? html`
+          <ul class="indicator" @click=${this.handleClickIndicator}>
+            ${this.items.map(
+              (item, index) =>
+                html` <li
+                  index=${index}
+                  class=${this.activeIndex === index ? 'active' : ''}
+                  @mouseenter=${this.handleIndicatorHover}
+                ></li>`
+            )}
+          </ul>
+        `
+      : ''
+
     return html`
       <div class="container" style=${`height:${this.height}px`}>
-        <slot></slot>
-        <div class="left toggle-btn" @click=${this.prev}>
-          <wc-icon name="left"></wc-icon>
-        </div>
-        <div class="right toggle-btn" @click=${this.next}>
-          <wc-icon name="right"></wc-icon>
-        </div>
+        <slot @slotchange=${this.handleSlotChange}></slot>
+        ${toggleBtns}
       </div>
-      <ul>
-        ${this.items.map(_ => html`<li>3</li>`)}
-      </ul>
+      ${indicator}
     `
   }
 }
-class CarouselItem extends Component {
+class SwipeItem extends Component {
   static props = {
     name: { String, attributes: false }
   }
@@ -248,7 +370,8 @@ class CarouselItem extends Component {
     :host([card]) {
       width: 50%;
       transition-duration: 400ms;
-      transition-property: transform, opacity;
+      transition-property: transform, opacity, filter;
+      cursor: pointer;
     }
   `
   static watch = {
@@ -269,16 +392,22 @@ class CarouselItem extends Component {
       if (this.$parent.type !== 'card') {
         return
       }
-      this.style.opacity = 1
+      let style = {
+        opacity: 1,
+        'z-index': 1,
+        filter: 'brightness(0.8)'
+      }
       if (this.inStage) {
-        this.style['z-index'] = 1
+        style['z-index'] = 1
       } else {
-        this.style['z-index'] = -1
-        this.style.opacity = 0
+        style['z-index'] = -1
+        style.opacity = 0
       }
       if (val) {
-        this.style['z-index'] = 2
+        style['z-index'] = 2
+        style.filter = 'brightness(1)'
       }
+      Object.assign(this.style, style)
     }
   }
   processIndex(index, activeIndex, length) {
@@ -347,9 +476,11 @@ class CarouselItem extends Component {
     this.$parent = this.parentNode
     if (this.$parent.type === 'card') {
       this.setAttribute('card', '')
+      const index = this.$parent.items.indexOf(this)
+      this.$on('click', () => this.$parent.setActiveItem(index))
     }
   }
 }
 
-Carousel.reg('carousel')
-CarouselItem.reg('carousel-item')
+Swipe.reg('swipe')
+SwipeItem.reg('swipe-item')