chubiao
/
yl-gzh


			
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486
							<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<meta name="applicable-device" content="mobile">
		<meta name="viewport" content="width=device-width,initial-scale=1,user-scalable=0">
		<title>H5摄像头(新版浏览器https)(兼容老版浏览器)</title>
		<!-- <script type="text/javascript" src="https://js.cdn.aliyun.dcloud.net.cn/dev/uni-app/uni.webview.1.5.2.js">
		</script> -->
		<script type="text/javascript" src="js/uni.webview.1.5.2.js">
		</script>
		<link rel="stylesheet" href="css/weui.min.css">
		<link rel="stylesheet" href="css/jquery-weui.css">
	</head>
	<body style="background-color: blanchedalmond;display: flex;flex-direction: column;">
		<!-- 说明：将网页更改为https访问才行 否者报错：NotSupportedError Only secure origins are allowed (see: https://goo.gl/Y0ZkNV). -->
		<!-- video用于显示媒体设备的视频流，自动播放；属性：https://zhuanlan.zhihu.com/p/535917105 -->
		<canvas id="canvas" ></canvas>
		<!-- transform: rotateY(180deg); 镜像解决 -->
		<!-- 可以通过画布canvas渲染，获取使用默认的video也行 -->
		<!-- <canvas id="canvas" width="500" height="400" style="transform: rotateY(180deg);"></canvas> -->
		<div class="box">
			<!-- <canvas id="canvas"></canvas> -->
			<div style="position: relative;width: 100%;margin-top: 15vh;">
				
				<video id="video" autoplay webkit-playsinline="true" playsinline="true"></video>
				<div class="imgStyle" id=imgStyle></div>
			</div>
			<span class="text">请将证件完整置于取景框内</span>

			<div class="buttonBox">
				<!-- 拍照按钮 -->
				<img class="buttonImg" id="back" src="../images/back.png" />
				<img class="buttonImg" id="capture" src="../images/pai.png" />
				<img class="buttonImg" id="fanzhuan" src="../images/fan.png" />
				<!-- <a href="javascript:op_Menu();" class="weui-btn weui-btn_mini weui-btn_primary" style="height: 4vh;">切换摄像头</a> -->
			</div>
		</div>

		<div id="popup">
			<img id="popupImg" width="100%" alt="" src="">
			<div class="popupBox">
				<button id="closeBtn" style="margin-right: 10px;">取消</button>
				<button id="okBtn">确认</button>
			</div>

		</div>


		<script src="js/jquery-2.1.4.js"></script>
		<script src="js/jquery-weui.js"></script>
		<script type="text/javascript">
			var isQian = false; //是前置摄像头
			// 获取弹窗元素
			var popup = document.getElementById('popup');
			var popupImg = document.getElementById('popupImg');
			popup.style.display = 'none';
			// 获取关闭按钮元素
			var closeBtn = document.getElementById('closeBtn');
			var okBtn = document.getElementById('okBtn');
			var video = document.getElementById("video");
			var canvas = document.getElementById("canvas");
			var context = canvas.getContext("2d");
			var imgStyle = document.getElementById("imgStyle");
            var idealw=540;
			var idealh=856;
			var v_t_w = 540,
				v_t_h = 856;
			// var v_t_w = window.screen.width,
			// 	v_t_h = 200;
			var mode = 'environment';
			var mediaStreamTrack;
			var selectedDeviceId;
			var isLoding=false;
			var dataMock = [];
			let cardType = localStorage.getItem("cardType")
			if (cardType === 'front') {
				imgStyle.style.backgroundImage = "url('camera_idcard_front.png')";
			} else {
				imgStyle.style.backgroundImage = "url('camera_idcard_back.png')";
			}
			// 85.6   54

			// v_t_w = v_t_w * 90 / 100
			// v_t_h = 54 / 85.6 * v_t_w

			canvas.width = v_t_w;
			canvas.height = v_t_h;

			document.addEventListener('UniAppJSBridgeReady', function() {
				okBtn.addEventListener('click', function() {
					uni.postMessage({
						data: {
							base64: popupImg.src
						}
					});
					window.history.back(-1)
				});
			});


			// 弹出弹窗
			function openPopup() {
				popup.style.display = 'block';
			}

			// 关闭弹窗
			function closePopup() {
				changeFacingMode();
				popup.style.display = 'none';
			}

			// 绑定关闭按钮的点击事件
			closeBtn.addEventListener('click', closePopup);
			//切换摄像头
			function changeVideo(value, index) {
				if (!value) {
					return
				}
				localStorage.setItem('deviceIndex', index);
				if (mediaStreamTrack) {
					mediaStreamTrack.stop();
				}

				getUserMedia({
					video: {
						deviceId: value,
						// deviceId:{
						// 	 exact:value,
						// },
						// width: 200,
						// height: window.screen.width,
						width: { ideal: idealw },
						height: { ideal: idealh }
						// facingMode: mode //设置使用后置摄像头，user为前置摄像头
					},
				}, successFun, errorFun);
			}

			// 访问用户媒体设备的兼容方法
			function getUserMedia(constrains, successFun, errorFun) {
				//like12 modified,20210628,bug,navigator.mediaDevices为空会导致后面卡死
				if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
					//最新标准API(新版浏览器https)
					navigator.mediaDevices.getUserMedia(constrains).then(successFun).catch(errorFun);
				} else if (navigator.webkitGetUserMedia) {
					//like12 modified,20210628,不是这种调用方法 应该为后者
					//webkit内核浏览器(老版浏览器)
					//navigator.webkitGetUserMedia(constrains).then(successFun).catch(errorFun);
					navigator.webkitGetUserMedia({
						"video": true
					}, successFun, errorFun);
				} else if (navigator.mozGetUserMedia) {
					//Firefox浏览器
					navagator.mozGetUserMedia(constrains).then(successFun).catch(errorFun);
				} else if (navigator.getUserMedia) {
					//旧版API
					navigator.getUserMedia(constrains).then(successFun).catch(errorFun);
				}
			}

			function op_Menu() {
				// alert("data" + dataMock.length);
				$.actions({
					title: "切换摄像头",
					onClose: function() {
						console.log("close");
					},
					actions: dataMock.map((item, index) => {
					return {
						text: item.text,
						className: "color-primary",
						onClick: function() {
							isQian = false;
							document.querySelector("video").style.cssText =
								"width: 100%; height: 200px;-webkit-playsinline: true; playsinline: true;transform:rotateY(0deg);";
							if (item.text.toLowerCase().includes("front") || item.text.toLowerCase()
								.includes("前置")) {
								isQian = true;
								document.querySelector("video").style.cssText =
									"width: 100%; height: 200px;-webkit-playsinline: true; playsinline: true;transform:rotateY(180deg);";
							}
							changeVideo(item.value, index);
						}
					}
				})
				});
			}

			// 成功的回调函数
			function successFun(stream) {
				//like12 modifed,20210618,Chrome升级后,新版本不再支持该用法
				//摄像头视频流显示报错Failed to execute 'createObjectURL' on 'URL'
				//研究即时通信的过程中需要调用摄像头，发现报错，原来是谷歌弃用了这个方法，根据官方提示修改即可
				//所以原先的代码：video.src = URL.createObjectURL(stream);
				//需要被修改为：video.srcObject = stream;
				//(新版浏览器https)

				if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
					video.srcObject = stream;
				}
				//(老版浏览器)
				else {
					//兼容webkit内核浏览器
					var CompatibleURL = window.URL || window.webkitURL;
					//将视频流设置为video元素的源
					//此处的代码将会报错  解决的办法是将video的srcObject属性指向stream即可
					video.src = CompatibleURL.createObjectURL(stream);
				}
				mediaStreamTrack = stream.getTracks()[0];
				let settings = mediaStreamTrack.getSettings();
				// 获取分辨率信息
				v_t_w = settings.width;
				v_t_h = settings.height;
				//video.width=v_t_w;
				//video.height=v_t_h;
				canvas.width = v_t_w;
				canvas.height = v_t_h;
				// 播放视频
				video.play();
				// 可以通过画布canvas渲染，获取使用默认的video也行
				// setInterval(function() {
				// 	context.drawImage(video, 0, 0, v_t_w, v_t_h);
				// }, 20);
				// function draw() {
				//     context.drawImage(video, 0, 0, v_t_w, v_t_h);
				//     requestAnimationFrame(draw);
				// }
				// draw();
				isLoding=false
			}

			// 异常的回调函数
			function errorFun(error) {
				isLoding=false
				console.log("访问用户媒体设备失败：", error.name, error.message);
				alert("访问用户媒体设备失败：" + error.name + " " + error.message);
			}

			document.getElementById('back').addEventListener('click', function() {
				window.history.back(-1)
			})


			document.getElementById('fanzhuan').addEventListener('click', function() {
				if(isLoding)
				{
					return;
				}
				if(dataMock&&dataMock.length<3)
				{
					changeMode();
				}else{
					op_Menu();
				}
				
				
			})

			// 注册拍照按钮的单击事件-截图
			document.getElementById("capture").addEventListener("click", function() {
				 // 获取ID为"myElement"的元素
				var element = document.getElementById("popup");
				// 获取该元素的样式属性
				var style = window.getComputedStyle(element);
				// 例如，获取元素的背景颜色
				var displayStyle = style.display;
				if(displayStyle!='none')
				{
					return ;
				}
				// 画布截取
				canvas.width = video.videoWidth;
				canvas.height = video.videoHeight;
				if (isQian == true) {
					context.translate(canvas.width, 0);
					context.scale(-1, 1);
				}
				context.drawImage(video, 0, 0, video.videoWidth, video.videoHeight);
				
				mediaStreamTrack && mediaStreamTrack.stop();
				var base64Img = canvas.toDataURL('image/jpeg');
				//var base64 = canvas.toDataURL('image/jpeg',0.5);// 图片质量0.5
				popupImg.src = base64Img;
				openPopup()
			});


			function takePhoto() {
				// 开始调用摄像头
				//like12 modified,20210628,bug,navigator.mediaDevices为空会导致后面卡死
				if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia ||
					navigator.getUserMedia ||
					navigator.webkitGetUserMedia ||
					navigator.mozGetUserMedia) {
					navigator.mediaDevices.enumerateDevices().then(function(devices) {
						let number = 1;
						dataMock=[];
						devices.forEach(function(device, index) {
							if (device.kind === 'videoinput') {
								// var option = document.createElement('option');
								let label = '摄像头' + number;
								number++;
								if (device.label && device.label.search('back') !== -1) {
									label = "后置" + label;
								}
								if (device.label && device.label.search('front') !== -1) {
									label = "前置" + label;
								}
								// option.text = label;
								// option.value = device.deviceId;
								dataMock.push({
									text: label,
									value: device.deviceId
								})
							}
						})
						if (localStorage.getItem('deviceIndex')) {
							selectedDeviceId = dataMock[localStorage.getItem('deviceIndex')] ? dataMock[localStorage.getItem(
								'deviceIndex')].value : '';
						}
						// 调用用户媒体设备，访问摄像头
                         changeFacingMode()
					});
				} else {
					alert("你的浏览器不支持访问用户媒体设备");
				}
			}
			function changeFacingMode(){
				isLoding=true
				if(!selectedDeviceId||dataMock.length<3){
					getUserMedia({
						video: {
							width: {
								ideal: idealw
							},
							height: {
								ideal: idealh
							},
							// width: 200,
							// height: window.screen.width,
							// focusMode: "mode",
							facingMode: mode //设置使用后置摄像头，user为前置摄像头
						},
					}, successFun, errorFun);
				}
				else{
					getUserMedia({
						video: {
							deviceId: selectedDeviceId,
							// width: 200,
							// height: window.screen.width,
							width: {
								ideal: idealw
							},
							height: {
								ideal: idealh
							},
							focusMode:"continuous",
							// facingMode: mode //设置使用后置摄像头，user为前置摄像头
						},
					}, successFun, errorFun);
				}
			}

			takePhoto();

			function changeMode() {
				console.log("翻转摄像头");
				mode = mode === 'user' ? 'environment' : 'user';
				mediaStreamTrack.stop();
				isQian = false;
				document.querySelector("video").style.cssText =
					"width: 100%; height: 200px;-webkit-playsinline: true; playsinline: true;transform:rotateY(0deg);";
				if (mode.toLowerCase().includes("user")) {
					isQian = true;
					document.querySelector("video").style.cssText =
						"width: 100%; height: 200px;-webkit-playsinline: true; playsinline: true;transform:rotateY(180deg);";
				}
				changeFacingMode();
			}
		</script>
	</body>
	<style>
		.imgStyle {
			width: 300px;
			height: 190px;
			/* margin-top: 50px; */
			position: absolute;
			/* border: 1px solid red; */
			position: absolute;
			top: 50%;
			left: 50%;
			transform: translate(-50%, -50%);
			z-index: 10;
			background-image: url('camera_idcard_front.png');
			background-size: 100% 100%;
		}

		video {
			/* transform: rotateY(180deg);
			display: none; */
			width: 100%;
			height: 200px;
		}

		.box {
			margin: 0 auto;
			display: flex;
			flex-direction: column;
			text-align: center;
			height: 98vh;
			width: 100%;


		}

		canvas {
			/* width: 100%; */
		display: none;
		}

		.text {
			margin-top: 3vh;
			color: #888;
			/* color: red; */
		}


		.buttonBox {
			display: flex;
			justify-content: space-around;
			margin-top: 35vh;
			align-items: center;
		}

		.buttonImg {
			/* margin-left: 10vw; */
			width: 15vw;
			object-fit: contain;
		}


		.noneImg {
			display: none;
		}


		#popup {
			position: fixed;
			top: 30%;
			left: 50%;
			transform: translate(-50%, -50%);
			background: #fff;
			padding: 20px;
			border-radius: 5px;
			box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
			z-index: 9999;
		}

		#popup h2 {
			margin-top: 0;
		}

		#closeBtn {
			width: 30vw;
			height: 4vh;
			border-radius: 16px;
		}

		#okBtn {
			width: 30vw;
			height: 4vh;
			border-radius: 16px;
		}

		.popupBox {
			margin-top: 2vh;
			width: 100%;
			display: flex;
			justify-content: space-around;
		}
	</style>
</html>