微信小程序 - 发送视频弹幕

微信小程序 - 发送视频弹幕

微信小程序官方文档提供了发送视频弹幕的功能，参照其功能做了一些改动，实现可发送用户自定义颜色的弹幕。

function getRandomColor() {
    var rgb = [];
    for (var i = 0; i < 3; ++i) {
        var color = Math.floor(Math.random() * 256).toString(16);
        color = color.length == 1 ? '0' + color : color;
        rgb.push(color);
    }
    return '#' + rgb.join('');
}
Page({
    inputValue: '',
    data: {
        isRandomColor: true,
        src: '',
        numberColor: "#ff0000",
        danmuList: [{
            text: '第 1s 出现的红色弹幕',
            color: '#ff0000',
            time: 1
        }, {
            text: '第 2s 出现的绿色弹幕',
            color: '#00ff00',
            time: 2
        }]
    },
    onLoad: function onLoad() {
        var _this = this;
        wx.getSystemInfo({
            success: function success(res) {
                // video标签默认宽度300px、高度225px
                var windowWidth = res.windowWidth;                
                var videoHeight = 225 / 300 * windowWidth;
                _this.setData({
                    videoWidth: windowWidth,
                    videoHeight: videoHeight
                });
            }
        });
    },
    onReady: function onReady(res) {
        this.videoContext = wx.createVideoContext('myVideo');
    },
    onShow: function onShow() {
        var _this = this;
        wx.getStorage({
            key: 'numberColor',
            success: function success(res) {
                _this.setData({
                    numberColor: res.data
                });
            }
        });
    },
    bindInputBlur: function(e) {
        this.inputValue = e.detail.value;
    },
    bindSendDanmu: function() {
        if (this.data.isRandomColor) {
            var color = getRandomColor();
        } else {
            var color = this.data.numberColor;
        }
        this.videoContext.sendDanmu({
            text: this.inputValue,
            color: color
        });
    },
    videoErrorCallback: function(e) {
        console.log('视频错误信息:');
        console.log(e.detail.errMsg);
    },
    switchChange: function(e) {
        this.setData({
            isRandomColor: e.detail.value
        });
    },
    //跳转到选择颜色的页面
    selectColor: function() {
        wx.navigateTo({
            url: '../selectColor/selectColor',
            success: function(res) {
            },
            fail: function fail() {
            },
            complete: function() {
            }
        });
    }
});

<view class="section tc">
    <video id="myVideo" style="height:{{videoHeight}}px;width:{{videoWidth}}px" src="http://wxsnsdy.tc.qq.com/105/20210/snsdyvideodownload?filekey=30280201010421301f0201690402534804102ca905ce620b1241b726bc41dcff44e00204012882540400&bizid=1023&hy=SH&fileparam=302c020101042530230204136ffd93020457e3c4ff02024ef202031e8d7f02030f42400204045a320a0201000400" binderror="videoErrorCallback" danmu-list="{{danmuList}}" enable-danmu danmu-btn controls></video>
    <view class="btn-area">
        <view class="weui-cell weui-cell_input">
            <view class="weui-cell__bd">
                <input class="weui-input" placeholder="请输入弹幕" bindblur="bindInputBlur" />
            </view>
        </view>
        <button type="primary" style="margin:30rpx;" bindtap="bindSendDanmu">发送弹幕</button>
    </view>
</view>

<view class="weui-cells weui-cells_after-title">
    <view class="weui-cell weui-cell_switch">
        <view class="weui-cell__bd">随机颜色</view>
        <view class="weui-cell__ft">
            <switch checked bindchange="switchChange" />
        </view>
    </view>
    <view class="colorstyle"  bindtap="selectColor">
        <text>选择颜色</text>
        <view style="height:80rpx;width:80rpx;line-height: 100rpx;margin:10rpx;background-color:{{numberColor}}"></view>
    </view>
</view>

.weui-cells {
  position: relative;
  margin-top: 1.17647059em;
  background-color: #FFFFFF;
  line-height: 1.41176471;
  font-size: 17px;
}
.weui-cells:before {
  content: " ";
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  height: 1px;
  border-top: 1rpx solid #D9D9D9;
  color: #D9D9D9;  
}
.weui-cells:after {
  content: " ";
  position: absolute;
  left: 0;
  bottom: 0;
  right: 0;
  height: 1px;
  border-bottom: 1rpx solid #D9D9D9;
  color: #D9D9D9;
}
.weui-cells_after-title {
  margin-top: 0;
}
.weui-cell__bd {
  -webkit-box-flex: 1;
  -webkit-flex: 1;
          flex: 1;
}
.weui-cell__ft {
  text-align: right;
  color: #999999;
}

.weui-cell {
  padding: 10px 10px;
  position: relative;
  display: -webkit-box;
  display: -webkit-flex;
  display: flex;
  -webkit-box-align: center;
  -webkit-align-items: center;
          align-items: center;
}
.weui-cell:before {
  content: " ";
  position: absolute;
  top: 0;
  right: 0;
  height: 1px;
  border-top: 1rpx solid #D9D9D9;
  color: #D9D9D9;
  left: 15px;
}
.weui-cell:first-child:before {
  display: none;
}
.colorstyle{
    border-top: 2px solid #eee;
    border-bottom: 2px solid #eee;
    padding-left: 10px;
    padding-right: 10px;
    font-size: 17px;
    line-height: 100rpx;
    display: flex;
    flex-direction: row;
    justify-content:space-between;
}
.vertical {
    height: 40px;
    position: absolute;
    top: 50%;
    margin-top: -20px;
}

效果如图：

下面是选择弹幕文字颜色的页面，选择文字颜色之后跳转回发送弹幕页面

var app = getApp()
Page({
  data: {
    color: [
      { key: 1, color: ' 白色 ', number: '#FFFFFF' },
      { key: 2, color: ' 红色 ', number: '#FF0000' },
      { key: 3, color: ' 绿色 ', number: '#00FF00' },
      { key: 4, color: ' 蓝色 ', number: '#0000FF' },
      { key: 5, color: ' 牡丹红 ', number: '#FF00FF' },
      { key: 6, color: ' 青色 ', number: '#00FFFF' },
      { key: 7, color: ' 黄色 ', number: '#FFFF00' },
      { key: 8, color: ' 黑色 ', number: '#000000' },
      { key: 9, color: ' 海蓝 ', number: '#70DB93' },
      { key: 10, color: ' 巧克力色 ', number: '#5C3317' },
      { key: 11, color: ' 蓝紫色 ', number: '#9F5F9F' },
      { key: 12, color: ' 黄铜色 ', number: '#B5A642' },
      { key: 13, color: ' 亮金色 ', number: '#D9D919' },
      { key: 14, color: ' 棕色 ', number: '#A67D3D' },
      { key: 15, color: ' 青铜色 ', number: '#8C7853' },
      { key: 16, color: ' 2号青铜色 ', number: '#A67D3D' },
      { key: 17, color: ' 士官服蓝色 ', number: '#5F9F9F' },
      { key: 18, color: ' 冷铜色 ', number: '#D98719' },
      { key: 19, color: ' 铜色 ', number: '#B87333' },
      { key: 20, color: ' 珊瑚红 ', number: '#FF7F00' },
      { key: 21, color: ' 紫蓝色 ', number: '#42426F' },
      { key: 22, color: ' 深棕 ', number: '#5C4033' },
      { key: 23, color: ' 深绿 ', number: '#2F4F2F' },
      { key: 24, color: ' 深铜绿色 ', number: '#4A766E' },
      { key: 25, color: ' 深橄榄绿 ', number: '#4F4F2F' },
      { key: 26, color: ' 深兰花色 ', number: '#9932CD' },
      { key: 27, color: ' 深紫色 ', number: '#871F78' },
      { key: 28, color: ' 深石板蓝 ', number: '#6B238E' },
      { key: 29, color: ' 深铅灰色 ', number: '#2F4F4F' },
      { key: 30, color: ' 深棕褐色 ', number: '#97694F' },
      { key: 32, color: ' 深绿松石色 ', number: '#7093DB' },
      { key: 33, color: ' 暗木色 ', number: '#855E42' },
      { key: 34, color: ' 淡灰色 ', number: '#545454' },
      { key: 35, color: ' 土灰玫瑰红色 ', number: '#856363' },
      { key: 36, color: ' 长石色 ', number: '#D19275' },
      { key: 37, color: ' 火砖色 ', number: '#8E2323' },
      { key: 38, color: ' 森林绿 ', number: '#238E23' },
      { key: 39, color: ' 金色 ', number: '#CD7F32' },
      { key: 40, color: ' 鲜黄色 ', number: '#DBDB70' },
      { key: 41, color: ' 灰色 ', number: '#C0C0C0' },
      { key: 42, color: ' 铜绿色 ', number: '#527F76' },
      { key: 43, color: ' 青黄色 ', number: '#93DB70' },
      { key: 44, color: ' 猎人绿 ', number: '#215E21' },
      { key: 45, color: ' 印度红 ', number: '#4E2F2F' },
      { key: 46, color: ' 土黄色 ', number: '#9F9F5F' },
      { key: 47, color: ' 浅蓝色 ', number: '#C0D9D9' },
      { key: 48, color: ' 浅灰色 ', number: '#A8A8A8' },
      { key: 49, color: ' 浅钢蓝色 ', number: '#8F8FBD' },
      { key: 59, color: ' 浅木色 ', number: '#E9C2A6' },
      { key: 60, color: ' 石灰绿色 ', number: '#32CD32' },
      { key: 61, color: ' 桔黄色 ', number: '#E47833' },
      { key: 62, color: ' 褐红色 ', number: '#8E236B' },
      { key: 63, color: ' 中海蓝色 ', number: '#32CD99' },
      { key: 64, color: ' 中蓝色 ', number: '#3232CD' },
      { key: 65, color: ' 中森林绿 ', number: '#6B8E23' },
      { key: 66, color: ' 中鲜黄色 ', number: '#EAEAAE' },
      { key: 67, color: ' 中兰花色 ', number: '#9370DB' },
      { key: 68, color: ' 中海绿色 ', number: '#426F42' },
      { key: 69, color: ' 中石板蓝色 ', number: '#7F00FF' },
      { key: 70, color: ' 中春绿色 ', number: '#7FFF00' },
      { key: 71, color: ' 中绿松石色 ', number: '#70DBDB' },
      { key: 72, color: ' 中紫红色 ', number: '#DB7093' },
      { key: 73, color: ' 中木色 ', number: '#A68064' },
      { key: 74, color: ' 深藏青色 ', number: '#2F2F4F' },
      { key: 75, color: ' 海军蓝 ', number: '#23238E' },
      { key: 76, color: ' 霓虹篮 ', number: '#4D4DFF' },
      { key: 77, color: ' 霓虹粉红 ', number: '#FF6EC7' },
      { key: 78, color: ' 新深藏青色 ', number: '#00009C' },
      { key: 79, color: ' 新棕褐色 ', number: '#EBC79E' },
      { key: 80, color: ' 暗金黄色 ', number: '#CFB53B' },
      { key: 81, color: ' 橙色 ', number: '#FF7F00' }
    ],
  },

  selectColor: function (e) {
    var number = e.currentTarget.dataset.number;
    try {
      wx.setStorageSync('numberColor', number)
    } catch (e) {
    }
    wx.navigateBack({
      delta: 1,
      success: function (res) {
      },
      fail: function () {
      },
      complete: function () {
      }
    })
  }
})

<view class="page">
    <view class="page__bd">
        <view class="weui-grids">
            <block wx:for-items="{{color}}"  >
                <view  class="weui-grid"  data-number="{{item.number}}" bindtap="selectColor" >
                    <view class="weui-grid__icon"  style="background:{{item.number}}"/>
                </view>
            </block>
        </view>
    </view>
</view>

.weui-grids {
  border-top: 1rpx solid #D9D9D9;
  border-left: 1rpx solid #D9D9D9;
}
.weui-grid {
  position: relative;
  float: left;
  padding: 20rpx 20rpx;
  width: 20%;
  box-sizing: border-box;
  border-right: 1rpx solid #D9D9D9;
  border-bottom: 1rpx solid #D9D9D9;
}
.weui-grid_active {
  background-color: #ccc;
}
.weui-grid__icon {
  display: block;
  width: 100rpx;
  height: 100rpx;
  margin: 0 auto;
 box-shadow: 3px 3px 5px #bbb;
   
}
.weui-grid__label {
  margin-top: 5px;
  display: block;
  text-align: center;
  color: #000000;
  font-size: 14px;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

效果如图：