docs: add demo file for quick testing

gruhn · gruhn · commit e40a06af10fa · 2020-06-12T14:00:55.000+02:00
diff --git a/demo.html b/demo.html
@@ -0,0 +1,80 @@
+<!doctype html>
+<html>
+
+  <head>
+    <title>Vue QR-Code Reader DEMO</title>
+
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <script src="https://unpkg.com/vue@2/dist/vue.min.js"></script>
+    <script src="https://unpkg.com/vue-qrcode-reader@2/dist/vue-qrcode-reader.browser.js"></script>
+    <link rel="stylesheet" href="https://unpkg.com/vue-qrcode-reader@2/dist/vue-qrcode-reader.css">
+
+    <style>
+      p {
+        padding: 20px;
+      }
+
+      .error {
+        color: red;
+        font-weight: bold;
+      }
+    </style>
+  </head>
+
+  <body>
+    <div id="app">
+      <p>
+        Last result: <b>{{ decodedContent }}</b>
+      </p>
+
+      <p class="error">
+        {{ errorMessage }}
+      </p>
+
+      <qrcode-stream :torch="true" @init="onInit"></qrcode-stream>
+    </div>
+  </body>
+  <script>
+    new Vue({
+      el: '#app',
+
+      data() {
+        return {
+          decodedContent: '',
+          errorMessage: ''
+        }
+      },
+
+      methods: {
+        onDecode(content) {
+          this.decodedContent = content
+        },
+
+        onInit(promise) {
+          promise.then(({ capabilities }) => {
+              console.log('Successfully initilized! Ready for scanning now!')
+            })
+            .catch(error => {
+              if (error.name === 'NotAllowedError') {
+                this.errorMessage = 'Hey! I need access to your camera'
+              } else if (error.name === 'NotFoundError') {
+                this.errorMessage = 'Do you even have a camera on your device?'
+              } else if (error.name === 'NotSupportedError') {
+                this.errorMessage = 'Seems like this page is served in non-secure context (HTTPS, localhost or file://)'
+              } else if (error.name === 'NotReadableError') {
+                this.errorMessage = 'Couldn\'t access your camera. Is it already in use?'
+              } else if (error.name === 'OverconstrainedError') {
+                this.errorMessage = 'Constraints don\'t match any installed camera. Did you asked for the front camera although there is none?'
+              } else {
+                this.errorMessage = 'UNKNOWN ERROR: ' + error.message
+              }
+            })
+        }
+      }
+    })
+
+  </script>
+
+</html>
