Posted on 2006-10-11 12:52
东人EP 阅读(764)
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.NET 、
JavaScript
实现选择需要的颜色实现方法
显示调色板页面：
1
<html>
2 <head>
3 <title>调色板</title>
4 <meta http-equiv="Content-Type" content="text/html; charset=gb2311">
5
<script>
6
var ColorHex=new Array('00','33','66','99','CC','FF')
7 var SpColorHex=new Array('FF0000','00FF00','0000FF','FFFF00','00FFFF','FF00FF')
8 var current=null
9
10 function intocolor()
11
{
12 var colorTable=''
13 for (i=0;i<2;i++)
14 {
15 for (j=0;j<6;j++)
16 {
17 colorTable=colorTable+'<tr height=12>'
18 colorTable=colorTable+'<td width=11 style="background-color:#000000">'
19
20 if (i==0){
21
colorTable=colorTable+'<td width=11 style="background-color:#'+ColorHex[j]+ColorHex[j]+ColorHex[j]+'">'}
22 else{
23 colorTable=colorTable+'<td width=11 style="background-color:#'+SpColorHex[j]+'">'}
24
25
26 colorTable=colorTable+'<td width=11 style="background-color:#000000">'
27 for (k=0;k<3;k++)
28 {
29 for (l=0;l<6;l++)
30 {
31 colorTable=colorTable+'<td width=11 style="background-color:#'+ColorHex[k+i*3]+ColorHex[l]+ColorHex[j]+'">'
32 }
33 }
34 }
35 }
36 colorTable='<table width=253 border="0" cellspacing="0" cellpadding="0" style="border:1px #000000 solid;border-bottom:none;border-collapse: collapse" bordercolor="000000">'
37 +'<tr height=30><td colspan=21 bgcolor=#cccccc>'
38 +'<table cellpadding="0" cellspacing="1" border="0" style="border-collapse: collapse">'
39 +'<tr><td width="3"><td><input type="text" name="DisColor" size="6" disabled style="border:solid 1px #000000;background-color:#ffff00"></td>'
40 +'<td width="3"><td><input type="text" name="HexColor" size="7" style="border:inset 1px;font-family:Arial;" value="#000000"></td></tr></table></td></table>'
41 +'<table border="1" cellspacing="0" cellpadding="0" style="border-collapse: collapse" bordercolor="000000" onmouseover="doOver()" onmouseout="doOut()" onclick="doclick()" style="cursor:hand;">'
42 +colorTable+'</table>';
43 colorpanel.innerHTML=colorTable
44 }
45
46 function doOver()
47 {
48 if ((event.srcElement.tagName=="TD") && (current!=event.srcElement)) {
49 if (current!=null){current.style.backgroundColor = current._background}
50 event.srcElement._background = event.srcElement.style.backgroundColor
51 DisColor.style.backgroundColor = event.srcElement.style.backgroundColor
52 HexColor.value = event.srcElement.style.backgroundColor
53 //event.srcElement.style.backgroundColor = "white"
54 current = event.srcElement
55 }
56 }
57
58 function doOut() {
59
60 if (current!=null) current.style.backgroundColor = current._background
61 }
62
63 function doclick(){
64 if (event.srcElement.tagName=="TD")
65 {
66 //alert("选取颜色: "+event.srcElement._background)
67 DisColor.style.backgroundColor = event.srcElement.style.backgroundColor;
68 HexColor.value = event.srcElement.style.backgroundColor;
69 window.returnValue = event.srcElement.style.backgroundColor;
70 window.close();
71 return event.srcElement._background;
72 }
73 }
74
</script>
75 </head>
76 <body onload="intocolor()">
77 <div id="colorpanel" style="POSITION: absolute">
78 </div>
79
80 </body>
81</html>
82 调用调色板的ASPX页面：
1<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebApplication2.WebForm1" %>
2<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
3<HTML>
4 <HEAD>
5 <TITLE>WebForm1</TITLE>
6 <meta content="Microsoft Visual Studio .NET 7.1" name="GENERATOR">
7 <meta content="C#" name="CODE_LANGUAGE">
8 <meta content="JavaScript" name="vs_defaultClientScript">
9 <meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
10 <script language="javascript">
11 function getColor(obj)
12 {
13 if (window.showModalDialog)
14 {
15 var sRtn;
16 sRtn = showModalDialog("Color.htm","","help=no;status=no;center=yes;dialogWidth=275px;dialogHeight=203px");
17 if ((sRtn!="")&&(sRtn!=null))
18 {
19 obj.value = sRtn;
20 obj.style.backgroundColor = sRtn;
21 }
22 }
23 }
24 </script>
25 </HEAD>
26 <body MS_POSITIONING="GridLayout">
27 <form id="Form1" method="post" runat="server">
28 <div id="colorpanel" style="DISPLAY: none"></div>
29 <FONT face="宋体"></FONT>
30 <asp:TextBox id="TextBox1" style="Z-INDEX: 101; LEFT: 288px; POSITION: absolute; TOP: 160px"
31 runat="server"></asp:TextBox>
32 <INPUT style="Z-INDEX: 102; LEFT: 456px; POSITION: absolute; TOP: 160px" type="button" value="Button" onclick="getColor(document.all.TextBox1)">
33 </form>
34 </body>
35</HTML>
36