wangluohuoyun-huozhuapp/pages/mine/camera/portrait/portrait.nvue

<template>
	<view class="live-camera" :style="{ width: windowWidth, height: windowHeight }">
		<live-pusher
			id="livePusher"
			ref="livePusher"
			class="livePusher"
			mode="FHD"
			beauty="0"
			whiteness="0"
			:aspect="aspect"
			min-bitrate="1000"
			audio-quality="16KHz"
			device-position="back"
			:auto-focus="true"
			:muted="true"
			:enable-camera="true"
			:enable-mic="false"
			:zoom="false"
			:style="{ width: windowWidth, height: windowHeight }"
		></live-pusher>

		<!--提示语-->
		<cover-view class="remind">
			<text class="remind-text" style="">{{ message }}</text>
		</cover-view>

		<!--辅助线-->
		<cover-view class="outline">
			<cover-image class="outline" src="/static/live-camera/outline/portrait.png" style=""></cover-image>
		</cover-view>
		

		<view class="menu">
			<!--底部菜单区域背景-->
			<cover-image class="menu-mask" src="/static/live-camera/bar.png"></cover-image>

			<!--返回键-->
			<cover-image class="menu-back" @tap="back" src="/static/live-camera/back.png"></cover-image>

			<!--快门键-->
			<cover-image class="menu-snapshot" @tap="snapshot" src="/static/live-camera/shutter.png"></cover-image>

			<!--反转键-->
			<cover-image class="menu-flip" @tap="flip" src="/static/live-camera/flip.png"></cover-image>
		</view>
	</view>
</template>

<script>
let _this = null;
export default {
	data() {
		return {
			message:'请拍摄苛学加',//提示
			aspect: '2:3', //比例
			windowWidth: '', //屏幕可用宽度
			windowHeight: '', //屏幕可用高度
			camerastate: false, //相机准备好了
			livePusher: null, //流视频对象
			snapshotsrc: null //快照
		};
	},
	onLoad(e) {
		_this = this;
		this.initCamera();
	},
	onReady() {
		this.livePusher = uni.createLivePusherContext('livePusher', this);
		this.startPreview(); //开启预览并设置摄像头
	},
	methods: {
		//初始化相机
		initCamera() {
			uni.getSystemInfo({
				success: function(res) {
					_this.windowWidth = res.windowWidth;
					_this.windowHeight = res.windowHeight;
					let zcs = _this.aliquot(_this.windowWidth, _this.windowHeight);
					_this.aspect = _this.windowWidth / zcs + ':' + _this.windowHeight / zcs;
				}
			});
		},

		//整除数计算
		aliquot(x, y) {
			if (x % y == 0) return y;
			return this.aliquot(y, x % y);
		},

		//开始预览
		startPreview() {
			this.livePusher.startPreview({
				success: a => {
					if (a.errMsg == 'startPreview:ok' || a.errMsg == 'operateLivePusher:ok') {
						_this.camerastate = true; //标记相机启动成功
					}
				}
			});
		},
		//停止预览
		stopPreview() {
			this.livePusher.stopPreview({
				success: a => {
					_this.camerastate = false; //标记相机未启动
				}
			});
		},

		//返回
		back() {
			uni.navigateBack();
		},

		//抓拍
		snapshot() {
			this.livePusher.snapshot({
				success: e => {
					_this.snapshotsrc = e.message.tempImagePath;
					_this.stopPreview();
					_this.setImage();
					uni.navigateBack();
				}
			});
		},

		//反转
		flip() {
			this.livePusher.switchCamera();
		},

		//设置
		setImage() {
			let pages = getCurrentPages();
			let prevPage = pages[pages.length - 2]; //上一个页面

			//直接调用上一个页面的setImage()方法，把数据存到上一个页面中去
			prevPage.$vm.setImage({ path: _this.snapshotsrc });
		}
	}
};
</script>

<style lang="scss">
.live-camera {
	justify-content: center;
	align-items: center;
	.outline {
		position: absolute;
		top: 0;
		left: 0;
		bottom: 0;
		width: 750rpx;
		height: 1125rpx;
		z-index: 99;
		align-items: center;
		justify-content: center;
	}
	.remind {
		position: absolute;
		top: 880rpx;
		width: 750rpx;
		z-index: 100;
		align-items: center;
		justify-content: center;
		.remind-text {
			color: #dddddd;
			font-weight: bold;
		}
	}
	.menu {
		position: absolute;
		left: 0;
		bottom: 0;
		width: 750rpx;
		height: 180rpx;
		z-index: 98;
		align-items: center;
		justify-content: center;
		.menu-mask {
			position: absolute;
			left: 0;
			bottom: 0;
			width: 750rpx;
			height: 180rpx;
			z-index: 98;
		}
		.menu-back {
			position: absolute;
			left: 30rpx;
			bottom: 50rpx;
			width: 80rpx;
			height: 80rpx;
			z-index: 99;
			align-items: center;
			justify-content: center;
		}
		.menu-snapshot {
			width: 130rpx;
			height: 130rpx;
			z-index: 99;
		}
		.menu-flip {
			position: absolute;
			right: 30rpx;
			bottom: 50rpx;
			width: 80rpx;
			height: 80rpx;
			z-index: 99;
			align-items: center;
			justify-content: center;
		}
	}
}
</style>