亲爱的Stackoverflow用户，
我正在制定一个网络议程，其工作方式就像人们可以绘制的巨型画布（例如，您可以在酒吧找到的那种议程）
我是javascript的新手，但我管理了一些代码
我试图使用jquery库（zoomooz），它允许你通过点击它来放大div，但它会弄乱我的代码的绘图部分。 （基本上你正在绘制的内容和鼠标指针不同步）
然后我发现另一段代码直接放大画布（没有jquery库）..所以我试图将绘图脚本与该脚本合并，但它没有工作，正如你所期望的那样这样的拼贴画。
有人可以建议一种方法来解决我的问题与jquery库或如何使用画布与绘图和缩放脚本。或者也许是使用javascript画布提高技能的文档.. 我希望我足够清楚。 一旦这个问题得到解决，我就会开始考虑项目的后端部分......
div {
border:1px solid black;
width:1000px;
height:152px;
margin: none;
font-size: 0px;
}
div div {
width:150px;
height:150px;
background: #aaa;
display: inline-block;
margin: none;
font-size: 20px;
}
div div div {
width:50px;
height:50px;
display: inline-block;
margin: none;
position: absolute;
z-index: 1;
}
canvas{ position: absolute; z-index: 0 }<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Hierarchy test</title>
<link rel="stylesheet" href="test7.css" type="text/css" media="screen" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript" src="jquery.zoomooz.min.js"></script>
</head>
<script type="text/javascript">
var canvas, ctx, flag = false,
prevX = 0,
currX = 0,
prevY = 0,
currY = 0,
dot_flag = false;
var x = "black",
y = 2;
function init() {
canvas = document.getElementById('can');
ctx = canvas.getContext("2d");
w = canvas.width;
h = canvas.height;
canvas.addEventListener("mousemove", function (e) {
findxy('move', e)
}, false);
canvas.addEventListener("mousedown", function (e) {
findxy('down', e)
}, false);
canvas.addEventListener("mouseup", function (e) {
findxy('up', e)
}, false);
canvas.addEventListener("mouseout", function (e) {
findxy('out', e)
}, false);
}
function color(obj) {
switch (obj.id) {
case "green":
x = "green";
break;
case "blue":
x = "blue";
break;
case "red":
x = "red";
break;
case "yellow":
x = "yellow";
break;
case "orange":
x = "orange";
break;
case "black":
x = "black";
break;
case "white":
x = "white";
break;
}
if (x == "white") y = 14;
else y = 2;
}
function draw() {
ctx.beginPath();
ctx.moveTo(prevX, prevY);
ctx.lineTo(currX, currY);
ctx.strokeStyle = x;
ctx.lineWidth = y;
ctx.stroke();
ctx.closePath();
}
function erase() {
var m = confirm("Want to clear");
if (m) {
ctx.clearRect(0, 0, w, h);
document.getElementById("canvasimg").style.display = "none";
}
}
function save() {
document.getElementById("canvasimg").style.border = "2px solid";
var dataURL = canvas.toDataURL();
document.getElementById("canvasimg").src = dataURL;
document.getElementById("canvasimg").style.display = "absolute";
document.getElementById("canvasimg").style.top = "10px";
document.getElementById("canvasimg").style.left = "5px";
document.getElementById("canvasimg").style.zIndex = "-1";
}
function findxy(res, e) {
if (res == 'down') {
prevX = currX;
prevY = currY;
currX = e.clientX - canvas.offsetLeft;
currY = e.clientY - canvas.offsetTop;
flag = true;
dot_flag = true;
if (dot_flag) {
ctx.beginPath();
ctx.fillStyle = x;
ctx.fillRect(currX, currY, 2, 2);
ctx.closePath();
dot_flag = false;
}
}
if (res == 'up' || res == "out") {
flag = false;
}
if (res == 'move') {
if (flag) {
prevX = currX;
prevY = currY;
currX = e.clientX - canvas.offsetLeft;
currY = e.clientY - canvas.offsetTop;
draw();
}
}
}
</script>
<body class="container" onload="init()">
<canvas id="can" width="1000" height="300" style="position:absolute;top:5;left:5;border:2px solid;"></canvas>
<div id="w1" class="week">
<div id="d1" class="day">
<div id="bd1" class="bouton"></div>
</div>
<div id="d2" class="day">
<div id="bd2" class="bouton"></div>
</div>
<div id="d3" class="day">
<div id="bd3" class="bouton"></div>
</div>
</div>
<div style="position:absolute;top:12%;left:43%;">Choose Color</div>
<div style="position:absolute;top:15%;left:45%;width:10px;height:10px;background:green;" id="green" onclick="color(this)"></div>
<div style="position:absolute;top:15%;left:46%;width:10px;height:10px;background:blue;" id="blue" onclick="color(this)"></div>
<div style="position:absolute;top:15%;left:47%;width:10px;height:10px;background:red;" id="red" onclick="color(this)"></div>
<div style="position:absolute;top:17%;left:45%;width:10px;height:10px;background:yellow;" id="yellow" onclick="color(this)"></div>
<div style="position:absolute;top:17%;left:46%;width:10px;height:10px;background:orange;" id="orange" onclick="color(this)"></div>
<div style="position:absolute;top:17%;left:47%;width:10px;height:10px;background:black;" id="black" onclick="color(this)"></div>
<div style="position:absolute;top:20%;left:43%;">Eraser</div>
<div style="position:absolute;top:22%;left:45%;width:15px;height:15px;background:white;border:2px solid;" id="white" onclick="color(this)"></div>
<img id="canvasimg" style="position:absolute;top:10%;left:52%;" style="display:none;">
<input type="button" value="save" id="btn" size="30" onclick="save()" style="position:absolute;top:55%;left:10%;">
<input type="button" value="clear" id="clr" size="23" onclick="erase()" style="position:absolute;top:55%;left:15%;">
<script>
$(document).ready(function() {
$("#bd1").click(function(evt) {
$("#d1").zoomTo({targetsize:0.75, duration:600});
evt.stopPropagation();
});
$("#bd2").click(function(evt) {
$("#d2").zoomTo({targetsize:0.75, duration:600});
evt.stopPropagation();
});
$("#bd3").click(function(evt) {
$("#d3").zoomTo({targetsize:0.75, duration:600});
evt.stopPropagation();
});
});
</script>
</body>