视频器拖动调整

components/video-player/progress-bar.vue

@@ -0,0 +1,170 @@
+/**
+  $emit: updateProgress, -> 调整进度条后触发的事件，传递参数：currentProgress
+         getMouseDownStatus, -> 获取是否鼠标按下的状态，传递参数：true/false
+  props: width, height,
+         currentProgress, -> 当前进度，范围0-1
+ */
+<template>
+  <div
+    class="progress-bar"
+    :style="{width: width}"
+    @mousedown.left="down"
+    @mousemove="move"
+    @mouseup="up"
+  >
+    <div class="progress-full" :style="{height: height}">
+      <div class="progress-current" :style="{width: currentProgress + '%'}"></div>
+    </div>
+  </div>
+</template>
+
+<script>
+export default {
+  name: "progress-bar",
+  props: {
+    width: {
+      type: String,
+      default: "100%",
+    },
+    height: {
+      type: String,
+      default: "4px",
+    },
+    // 当前进度，范围0-1
+    currentProgress: {
+      type: Number,
+      default: 0,
+    },
+    isDrag:{
+      type: Boolean,
+      default: true,
+    },
+    blobId:{
+      type: String,
+    }
+  },
+  data() {
+    return {
+      is_mousedown_progress: false, //是否点击了进度条并保持点击状态
+      current_width_px: 0, // 当前进度条的像素长度
+      init_clientX: 0, //初始进度的偏移量，相对于视口
+      dom_full: null, //完整进度条的dom，即进度条背景
+    };
+  },
+  mounted() {
+    //console.log(this.isDrag,'isDrag');
+    //初始化一些固定数据
+    let dom_full = this.$el.getElementsByClassName("progress-full")[0];
+    this.dom_full = dom_full;
+    //绑定全局监听器
+    window.addEventListener("touchmove", (e) => {
+      if (this.is_mousedown_progress) {
+        this.move(e);
+      }
+    });
+    window.addEventListener("touchend", (e) => {
+      this.up(e);
+    });
+  },
+  beforeDestroy() {
+    //
+  },
+  methods: {
+    down(e) {
+        
+        this.$emit("getMouseDownStatus", true);
+        this.is_mousedown_progress = true;
+        // 获取完整进度条的clientX（dom左上角）
+        let init_clientX = this.dom_full.getBoundingClientRect().left;
+        // 计算调整后的当前进度条的长度
+        this.current_width_px = e.clientX - init_clientX;
+        // 设置当前的播放进度（同时作用于当前进度条的样式）
+        let current = (e.clientX - init_clientX) / this.dom_full.clientWidth;
+        var time = localStorage.getItem('videoProgressData');
+        var arr = time&&JSON.parse(time) || {}
+		console.log('down::',this.isDrag,time,arr[this.blobId] ,current)
+        // 禁止拖动
+        if(!this.isDrag && time && arr[this.blobId] < current) return;
+
+        this.$emit("updateProgress", current);
+    },
+    move(e) {
+      if (this.is_mousedown_progress) {
+        let init_clientX = this.dom_full.getBoundingClientRect().left;
+        this.current_width_px = e.clientX - init_clientX;
+        let current = (e.clientX - init_clientX) / this.dom_full.clientWidth;
+        var time = localStorage.getItem('videoProgressData');
+        var arr = time&&JSON.parse(time) || {}
+		console.log('move::',this.isDrag,time,arr[this.blobId] ,current)
+        // 禁止拖动
+        if(!this.isDrag && time && arr[this.blobId] < current) return;
+        this.$emit("updateProgress", current);
+      }
+    },
+    up() {
+      if (this.is_mousedown_progress) {
+        // 标记鼠标不处于按下的状态了
+        this.is_mousedown_progress = false;
+        this.$emit("getMouseDownStatus", false);
+        // 松开鼠标后，即调整进度条后，此时的进度（0-1）
+        let current = this.current_width_px / this.dom_full.clientWidth;
+        var time = localStorage.getItem('videoProgressData');
+        var arr = time&&JSON.parse(time) || {}
+		console.log('up::',this.isDrag,time,arr[this.blobId] ,current)
+        // 禁止拖动
+        if(!this.isDrag && time && arr[this.blobId] < current) return;
+        this.$emit("updateProgress", current);
+        
+      }
+    },
+  },
+};
+</script>
+
+<style scoped>
+.progress-bar {
+  position: relative;
+  cursor: pointer;
+  padding: 2px 0;
+  margin:  0;
+  transition: height 0.2s;
+  /*overflow: hidden;*/
+}
+.progress-bar:hover .progress-full {
+  height: 2px !important;
+}
+.progress-full {
+  position: relative;
+  display: inline-block;
+  width: 100%;
+  background: rgb(201, 201, 201);
+  transition: height 0.3s;
+}
+.progress-current {
+  position: absolute;
+  left: 0;
+  top: 0;
+  height: inherit;
+  width: 50%;
+  display: inline-block;
+  background-color: var(--primaryColor);
+}
+.progress-current::after {
+  content: "";
+  position: absolute;
+  display: inline-block;
+  right: 0;
+  top: 50%;
+  bottom: 50%;
+  width: 12px;
+  height: 12px;
+  border-radius: 100%;
+  background: #fff;
+  transform: translate(50%, -50%);
+  opacity: 1;
+  transition: opacity 0.3s;
+}
+.progress-bar:hover .progress-current::after {
+  opacity: 1;
+}
+</style>