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remote_push.php
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<?php
include_once "config.php";
include_once "/lib/sc_envu.php";
$envu = envu_read("nm0", NM0_ENVU_SIZE, NM0_ENVU_OFFSET);
if(!($wrp_width = envu_find($envu, "wrp_width")))
$wrp_width = "400";
?>
<!DOCTYPE html>
<html>
<head>
<title>PHPoC Shield - Web Remote Control for Arduino</title>
<meta name="viewport" content="width=device-width, initial-scale=0.7, maximum-scale=0.7">
<style>
body { text-align: center; }
h1 { font-weight: bold; font-size: 25pt; }
h2 { font-weight: bold; font-size: 15pt; }
button { font-weight: bold; font-size: 15pt; }
</style>
<script>
var BOX_WIDTH = <?echo(int)$wrp_width/3?>;
var BOX_HEIGHT = <?echo(int)$wrp_width/3?>;
var PUSH_RADIUS = <?echo(int)$wrp_width/7?>;
var push_info = [];
var push_text = [ "A", "B", "C", "D", "E", "F", "G", "H", "I" ];
var push_font = "40px Arial";
var ws;
function init()
{
var remote = document.getElementById("remote");
remote.width = BOX_WIDTH * 3;
remote.height = BOX_HEIGHT * 3;
for(var push_id = 0; push_id < 9; push_id++)
{
push_info[push_id] = {state:false, identifier:null, font:push_font, text:push_text[push_id]};
update_push(push_id, false);
}
remote.addEventListener("touchstart", mouse_down);
remote.addEventListener("touchend", mouse_up);
remote.addEventListener("touchmove", mouse_move);
//remote.addEventListener("touchout", mouse_move);
remote.addEventListener("mousedown", mouse_down);
remote.addEventListener("mouseup", mouse_up);
remote.addEventListener("mousemove", mouse_move);
remote.addEventListener("mouseout", mouse_up);
}
function connect_onclick()
{
if(ws == null)
{
var ws_host_addr = "<?echo _SERVER("HTTP_HOST")?>";
var debug = document.getElementById("debug");
if((navigator.platform.indexOf("Win") != -1) && (ws_host_addr.charAt(0) == "["))
{
// network resource identifier to UNC path name conversion
ws_host_addr = ws_host_addr.replace(/[\[\]]/g, '');
ws_host_addr = ws_host_addr.replace(/:/g, "-");
ws_host_addr += ".ipv6-literal.net";
}
//debug.innerHTML = "<br>" + navigator.platform + " " + ws_host_addr;
ws = new WebSocket("ws://" + ws_host_addr + "/remote_push", "text.phpoc");
document.getElementById("ws_state").innerHTML = "CONNECTING";
ws.onopen = ws_onopen;
ws.onclose = ws_onclose;
ws.onmessage = ws_onmessage;
}
else
ws.close();
}
function ws_onopen()
{
document.getElementById("ws_state").innerHTML = "<font color='blue'>CONNECTED</font>";
document.getElementById("bt_connect").innerHTML = "Disconnect";
for(var push_id = 0; push_id < 9; push_id++)
update_push(push_id, false);
}
function ws_onclose()
{
document.getElementById("ws_state").innerHTML = "<font color='gray'>CLOSED</font>";
document.getElementById("bt_connect").innerHTML = "Connect";
ws.onopen = null;
ws.onclose = null;
ws.onmessage = null;
ws = null;
for(var push_id = 0; push_id < 9; push_id++)
update_push(push_id, false);
}
function ws_onmessage(e_msg)
{
e_msg = e_msg || window.event; // MessageEvent
alert("msg : " + e_msg.data);
}
function update_push(push_id, state)
{
var remote = document.getElementById("remote");
var ctx = remote.getContext("2d");
var push = push_info[push_id];
var cx, cy;
if(ws && (ws.readyState == 1))
{
ctx.strokeStyle = "blue";
if(state)
ctx.fillStyle = "blue";
else
ctx.fillStyle = "skyblue";
}
else
{
ctx.strokeStyle = "gray";
if(state)
ctx.fillStyle = "gray";
else
ctx.fillStyle = "silver";
}
cx = BOX_WIDTH * (push_id % 3) + BOX_WIDTH / 2;
cy = BOX_HEIGHT * parseInt(push_id / 3) + BOX_HEIGHT / 2;
ctx.beginPath();
ctx.arc(cx, cy, PUSH_RADIUS, 0, 2 * Math.PI);
ctx.fill();
ctx.stroke();
ctx.font = push.font;
ctx.textAlign = "center";
ctx.textBaseline = "middle";
ctx.fillStyle = "white";
ctx.fillText(push.text, cx, cy);
push.state = state;
if(!state)
push.identifier = null;
if(ws && (ws.readyState == 1))
{
if(state)
ws.send(String.fromCharCode(0x41 + push_id)); // 'A' ~ 'I'
else
ws.send(String.fromCharCode(0x61 + push_id)); // 'a' ~ 'i'
}
}
function find_push_id(x, y)
{
var cx, cy, push_id;
if((x < 0) || (x >= BOX_WIDTH * 3))
return 9;
if((y < 0) || (y >= BOX_WIDTH * 3))
return 9;
push_id = parseInt(x / BOX_WIDTH);
push_id += 3 * parseInt(y / BOX_WIDTH);
cx = BOX_WIDTH * (push_id % 3) + BOX_WIDTH / 2;
cy = BOX_HEIGHT * parseInt(push_id / 3) + BOX_HEIGHT / 2;
if(Math.sqrt((x - cx) * (x - cx) + (y - cy) * (y - cy)) < PUSH_RADIUS)
return push_id;
else
return 9;
}
function mouse_down(event)
{
var debug = document.getElementById("debug");
var x, y, push_id;
//debug.innerHTML = "";
if(event.changedTouches)
{
for(var touch_id = 0; touch_id < event.changedTouches.length; touch_id++)
{
var touch = event.changedTouches[touch_id];
x = touch.pageX - touch.target.offsetLeft;
y = touch.pageY - touch.target.offsetTop;
push_id = find_push_id(x, y);
if(push_id < 9)
{
var push = push_info[push_id];
if(push.state == false)
{
update_push(push_id, true);
push.identifier = touch.identifier;
//debug.innerHTML += ("+" + push_id + "/" + touch.identifier + " ");
}
//debug.innerHTML += (push_id + " ");
}
}
}
else
{
x = event.offsetX;
y = event.offsetY;
push_id = find_push_id(x, y);
if(push_id < 9)
{
update_push(push_id, true);
//debug.innerHTML += (push_id + " ");
}
}
event.preventDefault();
}
function mouse_up(event)
{
var debug = document.getElementById("debug");
var push_id;
//debug.innerHTML = "";
if(event.changedTouches)
{
for(var touch_id = 0; touch_id < event.changedTouches.length; touch_id++)
{
var touch = event.changedTouches[touch_id];
for(var push_id = 0; push_id < 9; push_id++)
{
if(touch.identifier == push_info[push_id].identifier)
break;
}
if(push_id < 9)
{
update_push(push_id, false);
//debug.innerHTML += ("-" + push_id + "/" + touch.identifier + " ");
}
}
}
else
{
for(var push_id = 0; push_id < 9; push_id++)
{
if(push_info[push_id].state)
{
update_push(push_id, false);
break;
}
}
}
event.preventDefault();
}
function mouse_move(event)
{
event.preventDefault();
}
window.onload = init;
</script>
</head>
<body>
<p>
<h1>Web Remote Control / Push</h1>
</p>
<canvas id="remote"></canvas><br>
<h2>WebSocket <font id="ws_state" color="gray">CLOSED</font></h2>
<button id="bt_connect" type="button" onclick="connect_onclick();">Connect</button>
<span id="debug"></span>
</body>
</html>