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<!DOCTYPE html>
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<html>
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<head lang="en">
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<meta charset="UTF-8">
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<title>数据流图绘制考试练习工具（v1.0 作者：liugw@mail.imut.edu.cn)</title>
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<link rel="stylesheet" href="dataflow.css">
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<script type="text/javascript" src="dataflow.js"></script>
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<style type="text/css">
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#canvas{
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border: 1px solid #333;
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display: block;
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margin:20px 20px;
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}
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#title2{
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background: gray;
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color: white;
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width:auto;
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height:20px;
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position:absolute;
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top:8px;
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left:50px;
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}
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#test{
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border: 1px solid #333;
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width:200px;
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height:150px;
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position:absolute;
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bottom:5px;
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left: 28px;
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}
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#title1{
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background: gray;
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color: white;
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width:auto;
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height:20px;
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position:absolute;
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left:50px;
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bottom:150px;
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}
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#back{
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border: 1px solid #333;
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width:200px;
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height:600px;
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position:absolute;
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right:0px;
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top:20px;
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}
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#title{
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background: gray;
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color: white;
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width:auto;
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height:20px;
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position:absolute;
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right:130px;
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top:8px;
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}
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#color{
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width: 32px;
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height:32px;
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position:absolute;
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right:150px;
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top:106px;
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}
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#bcolor{
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width: 32px;
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height:32px;
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position:absolute;
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right:100px;
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top:106px;
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}
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#range{
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width:80px;
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height:32px;
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position:absolute;
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right:10px;
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top:106px;
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}
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#undo{
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width:50px;
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height:25px;
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position:absolute;
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right:130px;
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top:56px;
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cursor:pointer;
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text-align: center;
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}
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#redo{
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width:50px;
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height:25px;
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position:absolute;
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right:70px;
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top:56px;
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cursor:pointer;
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text-align: center;
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}
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#save{
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width:50px;
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height:25px;
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position:absolute;
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right:10px;
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top:56px;
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cursor:pointer;
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text-align: center;
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}
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#text{
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width: 180px;
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height:25px;
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position:absolute;
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bottom:10px;
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right:10px;
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}
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</style>
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</head>
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<body background-color="rgba(0,0,0,0.5)">
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<div class="box">
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<canvas id="canvas" width="1000" height="600"></canvas>
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<div id="title2">绘图区</div>
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<div id="back"></div>
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<div id="title">工具箱</div>
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<input type="color" id="color" title="前景色" value="#000000"/>
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<input type="color" id="bcolor" title="背景色" value="#FFFFFF"/>
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<input type="range" id="range" min="1" max="10" title="画笔粗细" value="1"/>
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<input type="button" id="undo" onclick="undo();" title="撤销上一步操作" value="撤销" disabled/>
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<input type="button" id="redo" onclick="redo();" title="恢复上一步操作" value="重做" disabled/>
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<input type="button" id="save" onclick="save();" title="保存绘制结果" value="保存" disabled/>
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<div id="tools">
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</div>
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<input type="text" id="text" value="开始" title="输入文本" hidden/>
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<div id="test">
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<br/>
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1<br/>
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2<br/>
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</div>
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<div id="title1">题目要求</div>
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</div>
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<script type="text/javascript">
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//画布对象
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var canvas=document.getElementById("canvas");
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//工具箱对象
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var back=document.getElementById("back");
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//题目对象
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var test=document.getElementById("test");
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//绘画操作对象
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var cxt=canvas.getContext("2d");
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//前景色对象
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var color=document.getElementById("color");
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//背景色对象
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var bcolor = document.getElementById("bcolor");
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//画笔大小对象
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var size=document.getElementById("range");
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//加载工具
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var tools = document.getElementById("tools");
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loadTools(tools);
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//文本对象
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var text = document.getElementById("text");
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text.hidden = false;
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//界面自适应处理
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function resize(){
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canvas.width = window.innerWidth - 250;
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canvas.height = window.innerHeight - 200;
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back.style.height = (window.innerHeight - 28) + "px";
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test.style.width = (window.innerWidth - 250) + "px";
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}
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resize();
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//窗口自适应事件
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window.onresize = function(e){
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resize();
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}
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//鼠标按下
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canvas.onmousedown= function (e) {
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myMouseDown(e, this);
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};
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//鼠标移动
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canvas.onmousemove= function (e) {
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myMouseMove(e, this);
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}
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//鼠标松开
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canvas.onmouseup= function (e) {
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myMouseUp(e, this);
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}
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</script>
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</body>
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</html>
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