JS多个矩形块选择效果代码(模拟CS结构)

<html> <head> <base href="<%=basePath%>"> <title>大屏屏幕</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <link href="<%=path%>/css/font.css" rel="stylesheet" type="text/css" /> <SCRIPT LANGUAGE="JavaScript"> var canChange = 1; var candraw = 1; function main_mouseup() { candraw = 0; } function init() { var aDivs = document.getElementsByTagName("div"); for (var i=0; i<aDivs.length; i++) { new neverDragDivision(aDivs[i]); } } function changeColorToSelected(id) { id1=""+id; var td =document.getElementById(id1); td.bgColor = "#0000C6"; } function changeColorToNotSelected(id) { id1=""+id; var td =document.getElementById(id1); td.bgColor = "#BEBEBE"; } function changecolor(id) { if(canChange == 1) { if(id<1000) { id1=""+id; var td =document.getElementById(id1); var str = td.bgColor; //alert(str); var str1 = "#bebebe"; //黑色 var str2 = "#008000"; //绿色 if(str == str1) { td.bgColor = "#0000C6"; //red说明这个位置可以放！ // ps[id] = 1; } else { //ps[id] = 0; td.bgColor = "#BEBEBE"; } } else { id1=""+id; var td =document.getElementById(id1); var str = td.bgColor; var str2 = "#008000"; //绿色 if(str == str2) { td.bgColor = "white"; isHasChang=0; } else td.bgColor = "green"; { isHasChang=1; } } } } var startId; var endId; var list = 5; var up = 5; var down = 6; var selectFun = 0; function changeStart(id) { resetcheck(); candraw = 1; switch(event.button) { case 1: selectFun = 0; break; case 2: selectFun = 1; break; } //获得鼠标按下的那个格子的ID，来确定是哪个格子 //alert('start'); startId = id; } function changeColorBySE(id1,id2) { var Sx,Sy,Ex,Ey; var startP; //the last start point var endP; //the end point var changeId; Sx = id1%list; Sy = Math.floor(id1/list); //alert(Sy); Ex = id2%list; Ey = Math.floor(id2/list); DisX = Math.abs(Sx-Ex); //差距为几列 //alert("DisX:"+DisX); DisY = Math.abs(Sy-Ey); //差距为几行 //alert("DisY:"+DisY); //这个函数功能是将所有的矩形开始结束全部转变为左上右下 function StartChange(id1,id2) { if((id1<id2)&&(id1%list<id2%list)) {startP = id1;endP = id2;} else if((id1>id2)&&(id1%list>id2%list)) {startP = id2;endP = id1;} else{ //alert(DisY); startP = (id1<id2)?(id1-DisX):(id2-DisX); endP = (id1<id2)?(id2+DisY):(id1+DisY); } //alert("startP:"+startP+"endP:"+endP); } //开始点在结束点的下面 //转换包含(Sx,Sy),(Ex,Ey)区域的颜色 StartChange(id1,id2); for(i=0;i<DisY+1;i++) { for(j=0;j<DisX+1;j++) { changeId = startP+j+i*list; //alert(changeId); selectFun == 0?changeColorToSelected(changeId):changeColorToNotSelected(changeId); } } //alert(Sx); } function changUpEnd() { if(startId == endId){ candraw = 1; changeColorToNotSelected(startId); document.getElementById("startid").value = startId; document.getElementById("endid").value = startId; window.parent.screenEvent(startId,startId,'<%=sSingalID%>'); }else{ candraw = 0; document.getElementById("startid").value = startId; document.getElementById("endid").value = endId; window.parent.screenEvent(startId,endId,'<%=sSingalID%>'); } } function changeEnd(id) { //获得了最后的一个格子。 if(candraw == 1){ endId = id; //alert(endId); //算法 /* *根据起始ID 和 最后ID来确定是哪些格子变 * 计算start和end的行，列数 */ changeColorBySE(startId,endId); } } function neverDragDivision(fObj) { with (this) { if (!fObj) return; this.bDraged = false; this.oDragOrig = fObj; oDragOrig.onmousedown = function() { oDragOrig.style.backgroundColor="#FFFFFF"; //alert(event.clientY); //alert(oDragOrig.offsetTop); //var ofs = Offset(oDragOrig); // oDragOrig.style.position = "absolute"; //oDragOrig.style.left = ofs.l; //oDragOrig.style.top = ofs.t; //alert(oDragOrig.style.top); //oDragOrig.X = event.clientX - ofs.l; //oDragOrig.Y = event.clientY - ofs.t; bDraged = true; }; /* oDragOrig.onmousemove = function() { if (!bDraged) return; oDragOrig.setCapture(); oDragOrig.style.left = event.clientX - oDragOrig.X; oDragOrig.style.top = event.clientY - oDragOrig.Y; };*/ /* oDragOrig.onmouseup = function() { bDraged = false; oDragOrig.releaseCapture(); };*/ function Offset(e) { var t = e.offsetTop; var l = e.offsetLeft; var w = e.offsetWidth; var h = e.offsetHeight; while(ee=e.offsetParent) { t+=e.offsetTop; l+=e.offsetLeft; } return { t:t, l:l, w:w, h:h } }; }}; </SCRIPT> <style type="text/css">  </style> </head> <body onselectstart="return false" oncontextmenu="window.event.returnValue=false" onmouseup=main_mouseup()> <center> <script> document.write('<table border="0" align="center">'); document.write('<tr>'); number=1; number1=1; var i; up=5; list=8; for(i=0;i<(up*list);i++) { document.write('<td width="60" height="60" bgColor="#BEBEBE" id="'+i+'" onmouseMove="changeEnd(parseInt(id))" onmouseUp="changUpEnd()" onmouseDown="changeStart(parseInt(id))" onclick="changecolor(parseInt(id))")></td>'); if((i<((up*list)-list))&&(i+1)%list==0) { document.write('</tr><tr>'); number++; } } document.write('</tr><tr>'); document.write('<td>'); document.write('</td>'); document.write('</tr></table>'); function resetcheck(){ for(i=0;i<(up*list);i++){ changeColorToNotSelected(i); } } </script> </center>  </body> </html>

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JS多个矩形块选择效果代码(模拟CS结构)

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