File size: 6,691 Bytes
52a9452 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 | <!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1.0, user-scalable=no"/>
<title>{{title}}</title>
<link rel="icon" href="//assets.megvii.com/static%2Ffavicon.ico?ver=1498037959257">
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/vue/2.2.6/vue.min.js"></script>
</head>
<body>
<script language="javascript" type="text/javascript">
var vm = null;
function isCharacterKeyPress(evt) {
if (typeof evt.which == "undefined") {
// This is IE, which only fires keypress events for printable keys
return true;
} else if (typeof evt.which == "number" && evt.which > 0) {
// In other browsers except old versions of WebKit, evt.which is
// only greater than zero if the keypress is a printable key.
// We need to filter out backspace and ctrl/alt/meta key combinations
return !evt.ctrlKey && !evt.metaKey && !evt.altKey && evt.which != 8;
}
return false;
};
$(function() {
vm = new Vue({
el: '#board',
data: {
websocket: null,
// resources
delay: -1,
data_alive: null,
img_lst: null,
// network
package_size: 0,
download_time: 0,
net_speed: 0,
// timer
timer_interval: null,
timer_step: 100,
},
created: function() {
this.create_connection();
document.addEventListener("keypress", this.send_key, false);
},
computed: {
connection_alive: function() {
return (this.websocket != null) &&
!(this.websocket.readyState == this.websocket.CLOSING || this.websocket.readyState == this.websocket.CLOSED);
},
},
methods: {
get_ws_url: function(s) {
var l = window.location;
return ((l.protocol === "https:") ? "wss://" : "ws://") + l.hostname + (((l.port != 80) && (l.port != 443)) ? ":" + l.port : "") + l.pathname + s;
},
create_connection: function() {
this.websocket = new WebSocket(this.get_ws_url("stream"));
this.websocket.binaryType = "arraybuffer";
this.websocket.onopen = function(evt) { console.log("connected"); };
this.websocket.onclose = this.close_connection;
this.websocket.onerror = function(evt) { console.log("error occurred"); console.log(evt); };
this.websocket.onmessage = this.receive_message;
},
close_connection: function() {
console.log("disconnected");
this.websocket = null;
},
receive_message: function(evt) {
var obj = JSON.parse(evt.data);
var send_time = obj[0], recv_time = (new Date()).getTime() / 1000;
this.package_size = evt.data.length * 8;
this.download_time = recv_time - send_time;
this.net_speed = this.package_size / this.download_time;
console.log(obj);
this.data_alive = obj[1];
this.delay = obj[2];
this.img_lst = obj[3];
this.start_timer();
},
send_key: function(evt) {
if (!this.connection_alive || !this.data_alive) return;
if (!isCharacterKeyPress(evt)) return;
this.delay = 0;
this.data_alive = false;
var keycode = evt.keyCode;
console.log("key pressed " + keycode + " " + String.fromCharCode(keycode));
this.websocket.send(keycode);
},
update_timer: function() {
if (this.delay > 0) this.delay -= this.timer_step;
if (this.delay <= 0) {
this.data_alive = false;
if (this.timer_interval != null) {
clearInterval(this.timer_interval);
this.timer_interval = null;
}
}
},
start_timer: function() {
if (this.timer_interval != null) {
clearInterval(this.timer_interval);
this.timer_interval = null;
}
if (this.delay > 0) this.timer_interval = setInterval(this.update_timer, this.timer_step);
},
},
filters: {
decimal: function(num, fixed_point) {
return num.toFixed(fixed_point);
},
},
});
});
</script>
{% raw %}
<!-- Vue template -->
<div id="board">
<template v-if="connection_alive">
<template v-if="data_alive">
<p v-if="delay > 0">Press any key in {{delay / 1000 | decimal(1)}} seconds. </p>
<p v-else>Press any key to continue. </p>
</template>
<template v-else>
<p>Waiting for response from server. </p>
</template>
</template>
<template v-else>
<p>Disconnected from server. </p>
</template>
<p>Network: {{net_speed / 1000000 | decimal(2)}} MB/s * {{download_time | decimal(2)}} s = {{package_size / 1000000 | decimal(2)}} MB</p>
<div style="display:inline-block">
<div style="display:inline-block; vertical-align: top;" v-for="obj in img_lst">
<p>{{obj[0]}}</p>
<img :src="'data:image/png;base64,' + obj[1]" />
</div>
</div>
</div>
{% endraw %}
</body>
</html>
|