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index_cordova.html
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index_cordova.html
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<!doctype html>
<html>
<head>
<title>Sketch Pad</title>
<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; minimum-scale=1.0; user-scalable=0;" />
<link rel="stylesheet" href="lib/jquery.mobile/jquery.mobile-1.2.0.min.css" />
<script src="lib/jquery/jquery-1.8.2.min.js"></script>
<script src="lib/jquery.mobile/jquery.mobile-1.2.0.min.js"></script>
<script src="cordova.js"></script>
<style type="text/css">
body {
margin:0px;
width:100%;
height:100%;
overflow:hidden;
/* prevent text selection on ui */
user-select: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
/* prevent scrolling in windows phone */
-ms-touch-action: none;
}
#content {
overflow:hidden;
background-color:#ddd;
}
#canvas{
cursor:crosshair ;
background-color:#fff;
}
.palette-case {
width:260px;
margin:auto;
text-align:center;
}
.palette-box {
float:left;
padding:2px 6px 2px 6px;
}
.palette {
border:2px solid #777;
height:36px;
width:36px;
}
.red{
background-color:#c22;
}
.blue{
background-color:#22c;
}
.green{
background-color:#2c2;
}
.white{
background-color:#fff;
}
.black{
background-color:#000;
border:2px dashed #fff;
}
#etchHelp {
display: none;
position: absolute;
top: 40px;
right: 4px;
width: 160px;
background-color: #ffa;
color: #222;
font-size: 14px;
line-height: 20px;
border-radius: 4px;
padding: 6px;
box-shadow: 0 0 3px 1px #888;
}
</style>
<script type="text/javascript">
// Cordova is loaded and it is now safe to make calls Cordova methods
function onDeviceReady() {
navigator.splashscreen.hide();
newCanvas();
// accelerometer triggers
startWatch();
}
var ctx, color = "#000", x = 0, y = 0, z = 0, etch = 0;
$(document).ready(function () {
// hide the accelerometer aka etch on/off button
$("#etch").hide();
// Call onDeviceReady when Cordova is loaded and talking with the native device
document.addEventListener("deviceready", onDeviceReady, false);
// setup a new canvas for drawing
newCanvas();
// prevent footer to toggle on touch
$("[data-role=footer]").fixedtoolbar({ tapToggle: false });
// reset palette selection (css) and select the clicked color for canvas strokeStyle
$(".palette").click(function(){
$(".palette").css("border-color", "#777");
$(".palette").css("border-style", "solid");
$(this).css("border-color", "#fff");
$(this).css("border-style", "dashed");
color = $(this).css("background-color");
ctx.beginPath();
ctx.strokeStyle = color;
});
// link the new button with newCanvas() function
$("#new").click(function() {
newCanvas();
});
// hide help popup when clicked anywhere on screen
$("body").click(function(){
$("#etchHelp").fadeOut();
});
$("#etch").click(function(){
if(etch) {
etch = 0;
$("#etch .ui-btn-text").text("Etch OFF");
stopWatch();
} else {
etch = 1;
$("#etch .ui-btn-text").text("Etch ON");
startWatch();
}
});
});
// function to setup a new canvas for drawing
function newCanvas(){
//define and resize canvas
$("#content").height($(window).height()-90);
var canvas = '<canvas id="canvas" width="'+$(window).width()+'" height="'+($(window).height()-90)+'"></canvas>';
$("#content").html(canvas);
// setup canvas
ctx=document.getElementById("canvas").getContext("2d");
ctx.strokeStyle = color;
ctx.lineWidth = 5;
// set starting point in center
ctx.beginPath();
x = $(window).width()/2 ;
y = ($(window).height()-90)/2 ;
ctx.moveTo(x, y);
// setup to trigger drawing on mouse or touch
$("#canvas").drawTouch();
$("#canvas").drawPointer();
$("#canvas").drawMouse();
}
// prototype to start drawing on touch using canvas moveTo and lineTo
$.fn.drawTouch = function() {
var start = function(e) {
e = e.originalEvent;
ctx.beginPath();
x = e.changedTouches[0].pageX;
y = e.changedTouches[0].pageY-44;
ctx.moveTo(x,y);
};
var move = function(e) {
e.preventDefault();
e = e.originalEvent;
x = e.changedTouches[0].pageX;
y = e.changedTouches[0].pageY-44;
ctx.lineTo(x,y);
ctx.stroke();
};
$(this).on("touchstart", start);
$(this).on("touchmove", move);
};
// prototype to start drawing on pointer(microsoft ie) using canvas moveTo and lineTo
$.fn.drawPointer = function() {
var start = function(e) {
e = e.originalEvent;
ctx.beginPath();
x = e.pageX;
y = e.pageY-44;
ctx.moveTo(x,y);
};
var move = function(e) {
e.preventDefault();
e = e.originalEvent;
x = e.pageX;
y = e.pageY-44;
ctx.lineTo(x,y);
ctx.stroke();
};
$(this).on("MSPointerDown", start);
$(this).on("MSPointerMove", move);
};
// prototype to start drawing on mouse using canvas moveTo and lineTo
$.fn.drawMouse = function() {
var clicked = 0;
var start = function(e) {
clicked = 1;
ctx.beginPath();
x = e.pageX;
y = e.pageY-44;
ctx.moveTo(x,y);
};
var move = function(e) {
if(clicked){
x = e.pageX;
y = e.pageY-44;
ctx.lineTo(x,y);
ctx.stroke();
}
};
var stop = function(e) {
clicked = 0;
};
$(this).on("mousedown", start);
$(this).on("mousemove", move);
$(window).on("mouseup", stop);
};
// Start checking the accelerometer
function startWatch() {
// Update acceleration every 1 seconds
var options = { frequency: 100 };
watchID = navigator.accelerometer.watchAcceleration(onSuccess, onError, options);
}
// Stop checking the accelerometer
function stopWatch() {
if (watchID) {
navigator.accelerometer.clearWatch(watchID);
watchID = null;
}
}
// onSuccess: draw line based on tilt and amount of tilt
function onSuccess(acceleration) {
// for debug purpose to print out accelerometer values
var element = document.getElementById('debug');
element.innerHTML = 'Acceleration X: ' + acceleration.x + '<br />' +
'Acceleration Y: ' + acceleration.y + '<br />' +
'Acceleration Z: ' + acceleration.z ;
// hide the accelerometer aka etch on/off button
$("#etch").show();
if (!etch) {
$("#etchHelp").fadeIn();
stopWatch();
return;
}
// draw based on accelerometer positions
if(acceleration.x > 2 && Math.abs(acceleration.y) < 2 ){
if (x < 3){
buzzDevice(1);
x = 3;
}
x = x-Math.abs(acceleration.x);
ctx.lineTo(x, y);
ctx.stroke();
} else if(acceleration.x < -2 && Math.abs(acceleration.y) < 2){
if (x > $(window).width() - 3){
buzzDevice(2);
x = $(window).width() - 3;
}
x = x+Math.abs(acceleration.x);
ctx.lineTo(x, y);
ctx.stroke();
} else if(acceleration.y > 2 && Math.abs(acceleration.x) < 2){
if (y > $(window).height() - 93) {
buzzDevice(3);
y = $(window).height() - 93;
}
y = y+Math.abs(acceleration.y);
ctx.lineTo(x, y);
ctx.stroke();
} else if(acceleration.y < -2 && Math.abs(acceleration.x) < 2){
if(y < 3) {
buzzDevice(4);
y = 3;
}
y = y-Math.abs(acceleration.y);
ctx.lineTo(x, y);
ctx.stroke();
}
}
// onError: Failed to get the acceleration
function onError() {
document.getElementById('debug').innerHTML = 'ERROR';
}
var position = 0;
// vibrate and beep when edge of screen it hit while accelerometer drawing
function buzzDevice(pos){
if(position !== pos){ // vibrate only once when boudary is reached at a position
navigator.notification.vibrate(300);
position = pos;
}
}
</script>
</head>
<body>
<div data-role="page" id="page1">
<div data-theme="a" data-role="header">
<h3>Sketch Pad</h3>
<a id="new" data-role="button" data-theme="b" class="ui-btn-left">New</a>
<a id="etch" data-role="button" data-theme="b" class="ui-btn-right">Etch OFF</a>
</div>
<div id="content"></div>
<div data-theme="a" data-role="footer" data-position="fixed">
<div class="palette-case">
<div class="palette-box">
<div class="palette white"></div>
</div>
<div class="palette-box">
<div class="palette red"></div>
</div>
<div class="palette-box">
<div class="palette blue"></div>
</div>
<div class="palette-box">
<div class="palette green"></div>
</div>
<div class="palette-box">
<div class="palette black"></div>
</div>
<div style="clear:both"></div>
</div>
</div>
<div id="debug" style="display:none;position:absolute;top:45px;left:1px;right:1px;height:60px;background-color:#eea"></div>
<div id="etchHelp">Turning <strong>Etch ON</strong> will enable drawing using the device's accelerometer by tilting the device in any direction.</div>
</div>
<script src="http://debug-software.intel.com/target/target-script-min.js#1b241e6f-8fea-4baf-a130-0a2469b2b965"/>
</body>
</html>