我动态创建了一个热点区域，我想改变这个热点区域的颜色我该如何实现呢？我还想展示热点地区的边界。
以下是我在c＃dynamic
中在图像地图上创建热点的代码protected void txtall_TextChanged(object sender, EventArgs e)
{
string[] arr = txtall.Text.Split(',');
//create hotspot once there are 10 cordinates
if (arr.Length == 10)
{
PolygonHotSpot Polygon1 = new PolygonHotSpot();
Polygon1.Coordinates = arr[0].ToString() + "," + arr[1].ToString() + "," + arr[2].ToString() + "," + arr[3].ToString()
+ "," + arr[4].ToString() + "," + arr[5].ToString() + "," + arr[6].ToString() + "," + arr[7].ToString() + "," + arr[8].ToString() + "," + arr[9].ToString();// "128,185,335,157,400,224,400,400,228,400";
Polygon1.NavigateUrl="http://www.google.com";
Polygon1.AlternateText = "Southern Region";
ImageMap1.HotSpots.Add(Polygon1);
}
}
我曾尝试使用here中的jquery，但我无法成功。我是jquery的新手，我只是复制粘贴jquery函数并添加引用，但它不适用于我。我正在收集js代码，因为它只是从上面的链接复制粘贴。任何人都可以提供简单的样式或任何java / jquery函数所以我可以看到对热点区域的影响吗？
请帮助。谢谢。
更新 JAVASCRIPT
<script type="text/javascript" src="JS/JScript.js"></script>
//
<script type="text/javascript" src="JS/jquery.imagemapster.js"></script>
<script type="text/javascript">
function point_it(event) {
pos_x = event.offsetX ? (event.offsetX) : event.pageX - document.getElementById("pointer_div").offsetLeft;
pos_y = event.offsetY ? (event.offsetY) : event.pageY - document.getElementById("pointer_div").offsetTop;
document.getElementById("ImageMap1").style.left = (pos_x - 1);
document.getElementById("ImageMap1").style.top = (pos_y - 15);
document.getElementById("txt1").value = pos_x;
document.getElementById("txt2").value = pos_y;
if (document.getElementById("txtall").value == "") {
document.getElementById("txtall").value = pos_x + "," + pos_y;
}
else {
document.getElementById("txtall").value = document.getElementById("txtall").value + "," + pos_x + "," + pos_y;
}
var str = document.getElementById("txtall").value;
var stringArray = new Array();
stringArray = str.split(",");
for (i = 0; i < stringArray.length; i++) {
stringArray[i];
}
if (i == 10) {
//Creates Hotspot Dynamically
__doPostBack('txtall ', '');
//Effects to be applied for the hotspot created
var image = $('#ImageMap1');
image.mapster(
{
fillOpacity: 0.4,
fillColor: "d42e16",
stroke: true,
strokeColor: "3320FF",
strokeOpacity: 0.8,
strokeWidth: 4,
singleSelect: true,
mapKey: 'name',
listKey: 'name',
areas: [
{
fillColor: "ffffff"
},
]
});
}
//Clears hotspot
if (i >= 10) {
__doPostBack('txtall ', '');
str = "";
i = 0;
stringArray = [];
}
}
</script>
ASPX
<form name="pointform" runat="server">
<div id="pointer_div" onclick="point_it(event)" style="width: 500px; height: 333px;">
<asp:ImageMap ID="ImageMap1" runat="server" ImageUrl="~/Images/WMap.JPG" Style="width: 500px;
height: 333px;">
</asp:ImageMap>
</div>
<br />
<asp:TextBox ID="txt1" runat="server"></asp:TextBox>
<asp:TextBox ID="txt2" runat="server"></asp:TextBox>
<br />
<asp:TextBox ID="txtall" runat="server" OnTextChanged="txtall_TextChanged" AutoPostBack="true"></asp:TextBox>
</form>
如果我把jquery image.mapster放到我得到异常，因为point_it(event)未定义..如果我删除jqery，代码工作正常。
答案 0 :(得分：0)
使用任何JQuery插件。
找到here
答案 1 :(得分：0)
我拿了你的代码并进行了编辑。它现在 txtall上的回发有10个坐标。 之后有一个 postBack 和然后你会看到你的彩色区域！
<强>脚本代码
<script src="js/jquery-1.7.1.js" type="text/javascript"></script>
<script type="text/javascript" src="js/imageMapster/jquery.imagemapster.js"></script>
<script type="text/javascript">
$(document).ready(function () {
var image = $('#ImageMap1');
image.mapster({
fillOpacity: 0.4,
fillColor: "d42e16",
stroke: true,
strokeColor: "3320FF",
strokeOpacity: 0.8,
strokeWidth: 4,
singleSelect: true,
mapKey: 'shape',
listKey: 'shape'
});
$("#pointer_div").click(function(event) {
pos_x = event.offsetX ? (event.offsetX) : event.pageX - document.getElementById("pointer_div").offsetLeft;
pos_y = event.offsetY ? (event.offsetY) : event.pageY - document.getElementById("pointer_div").offsetTop;
document.getElementById("ImageMap1").style.left = (pos_x - 1);
document.getElementById("ImageMap1").style.top = (pos_y - 15);
document.getElementById("txt1").value = pos_x;
document.getElementById("txt2").value = pos_y;
if (document.getElementById("txtall").value == "")
document.getElementById("txtall").value = pos_x + "," + pos_y;
else
document.getElementById("txtall").value = document.getElementById("txtall").value + "," + pos_x + "," + pos_y;
var str = document.getElementById("txtall").value;
var stringArray = new Array();
stringArray = str.split(",");
for (i = 0; i < stringArray.length; i++) {
stringArray[i];
}
if (i == 10)
{
__doPostBack('txtall ', '');
}
//Clears hotspot
if (i >= 10) {
__doPostBack('txtall ', '');
str = "";
i = 0;
stringArray = [];
}
});
});
</script>
ASPX代码
<form id="form1" runat="server">
<div>
<div id="pointer_div" style="width: 500px; height: 333px;">
<asp:ImageMap ID="ImageMap1" runat="server" ImageUrl="pic/usa_map_720.png" Style="width: 500px;
height: 333px;">
</asp:ImageMap>
</div>
<br />
<asp:TextBox ID="txt1" runat="server"></asp:TextBox>
<asp:TextBox ID="txt2" runat="server"></asp:TextBox>
<br />
<asp:TextBox ID="txtall" runat="server" AutoPostBack="true" OnTextChanged="txtall_TextChanged" Text=""></asp:TextBox>
</div>
</form>
<强>代码隐藏
protected void txtall_TextChanged(object sender, EventArgs e)
{
string[] arr = txtall.Text.Split(',');
//create hotspot once there are 10 cordinates
if (arr.Length == 10)
{
PolygonHotSpot Polygon1 = new PolygonHotSpot();
Polygon1.Coordinates = arr[0].ToString() + "," + arr[1].ToString() + "," + arr[2].ToString() + "," + arr[3].ToString()
+ "," + arr[4].ToString() + "," + arr[5].ToString() + "," + arr[6].ToString() + "," + arr[7].ToString() + "," + arr[8].ToString() + "," + arr[9].ToString();// "128,185,335,157,400,224,400,400,228,400";
Polygon1.NavigateUrl = "http://www.google.com";
Polygon1.AlternateText = "Southern Region";
ImageMap1.HotSpots.Add(Polygon1);
}
}