我正在使用SVG rect和text元素作为工具提示。它们都在一个SVG元素内，这是美国各县的地图。
如果我的地图是固定高度的工具提示工作正常（我只是在我的鼠标附近设置svg的坐标）但是如果我使地图响应或者用户决定放大，则工具提示会失去功能一个给定的区域。
我的SVG文件位于https://codeshare.io/GcJIS，因为它对于此网站而言过于冗长。
我只是输了。我最初尝试制作一个简单的div工具提示（使用CSS）而不是使用SVG，但它让我的svg地图的div容器像疯了似的“弹跳”。我试过D3但发现自己更加困惑。我觉得有一些简单的东西，我只是在俯视，但我一直在努力实现这个“简单”的功能。任何帮助或指导表示赞赏。
window.onload=function() {
var panZoom = window.panZoom = svgPanZoom('#svgObj', {
zoomEnabled: true,
controlIconsEnabled: true,
dblClickZoomEnabled: false,
});
$(window).resize(function(){
panZoom.resize();
panZoom.fit();
panZoom.center();
})
var eastCoastStates = [ 'MA', 'RI', 'CT', 'NJ',
'DE', 'MD', 'DC', 'ME', 'NH', 'NY', 'PA',
'VA', 'NC', 'SC', 'FL', 'GA', 'WV', 'VT' ];
var svgDoc = $("#svgObj")[0].contentDocument; // Get the document object for the SVG
var county;
$("path", svgDoc).each(function(){
county = $(this).attr('inkscape:label'); //name of the county and state abbr i.e. "Travis County, TX
$(this).attr("title", county);
$(this).append("<title>"+ county+ "</title>");
$(this).removeAttr('inkscape:label');
});
var cssValue; //global variable, stores fill color on mouse enter for use in mouseout
$("path", svgDoc).mouseenter(function(event){
var current_id = $(this).attr('id');
if (current_id != "separator" //ignore anything not a county
&& current_id != "State_Lines"
&& current_id != "metadata3671"
&& current_id != "defs9561"
&& current_id != "base"
&& current_id != "State_borders") {
var countySt = $(this).attr('title');
var countyStArray = countySt.split(",");
var stateAbbr = countyStArray[1].trim();
var countyBahAmount = countiesBah[countySt];
if (countyBahAmount == undefined)
countyBahAmount = "Unknown Bah Amount";
var width = 4.7 * ($(this).attr('title').length + 2 + countyBahAmount.length); //defines the length of the SVG text box based on the inside text length
$("#textBox", svgDoc).attr('width', width);
$("#textSvg", svgDoc).text(
$(this).attr('title') + ": "
+ countyBahAmount);
var xPos = event.pageX;
var yPos = event.pageY;
if (eastCoastStates.indexOf(stateAbbr) > -1) { // Check to see if the element is a East Coast State,
// this will offset the tooltip to the left so it's not out of view
// made some readjustments, need to fix
$("#textSvg", svgDoc).attr('x', xPos - 300);
$("#textBox", svgDoc).attr('x', xPos - 300);
$("#textSvg", svgDoc).attr('y', yPos - 91);
$("#textBox", svgDoc).attr('y', yPos - 100);
} else {
$("#textSvg", svgDoc).attr('x', xPos - 153);
$("#textBox", svgDoc).attr('x', xPos - 155);
$("#textSvg", svgDoc).attr('y', yPos - 120);
$("#textBox", svgDoc).attr('y', yPos - 130);
}
$("#textSvg", svgDoc).attr('visibility','display');
$("#textBox", svgDoc).attr('visibility','display');
}
cssValue = $(this).css('fill');
var classAttr = $(this).attr('class');
var current_id = $(this).attr('id');
if (current_id != "separator" && current_id != "State_Lines"
&& current_id != "svg9559" && current_id != "metadata3671"
&& current_id != "defs9561" && current_id != "base"
&& current_id != "State_borders" && current_id != "svg-pan-zoom-reset-pan-zoom"
&& classAttr != "svg-pan-zoom-control-element" && classAttr !="svg-pan-zoom-control-background"){
$(this, svgDoc).css("fill", "lime");
}
});
$("path", svgDoc).mouseout(function(){
$("#textSvg", svgDoc).attr('visibility', 'hidden');
$("#textBox", svgDoc).attr('visibility', 'hidden');
var classAttr = $(this).attr('class');
var current_id = $(this).attr('id');
if (current_id != "separator" && current_id != "State_Lines"
&& current_id != "svg9559" && current_id != "metadata3671"
&& current_id != "defs9561" && current_id !="base"
&& classAttr != "svg-pan-zoom-control-element" && classAttr !="svg-pan-zoom-control-background"){
$(this, svgDoc).css("fill", cssValue); //fill the path element back to it's original color
}
});
$("path", svgDoc).dblclick(function(){
var nameSt = $(this).attr('title');
var index = nameSt.indexOf(",");
var county = nameSt.substring(0, index);
var stateAbbr = nameSt.substring(index + 1);
$("#var1").val(county.trim() + " County");
$("#var2").val(stateAbbr.trim());
$("#form").submit();
});
};<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Choropleth of Avg Bah Rate Per County</title>
<script src="js/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script src="js/svg-pan-zoom.min.js"></script>
<script src="js/countiesBahRates.js"></script>
<script src="js/choropleth.js"></script>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />
<style>
.svg-container {
display: inline-block;
position: relative;
width: 67%;
padding-bottom: 50%;
vertical-align: middle;
overflow: hidden;
}
.svg-content {
display: inline-block;
position: absolute;
top: 0;
left: 0;
}
</style>
</head>
<body>
<form style="display: hidden" action="CountyColleges" method="GET" id="form">
<input type="hidden" id="var1" name="countyName" value="" />
<input type="hidden" id="var2" name="stateAbbr" value="" />
</form>
<div class="container">
<div class="row">
<div class="col-md-2">
<p> Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the indust
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has
</p>
</div>
<div class="col-md-10" style="background:#F0F8FF;text-align:center; border:3px;border-style:inset;">
<object id="svgObj" data="UnitedStatesCounties.svg" type="image/svg+xml"
width="100%" height="100%" > </object>
</div>
</div>
</div>
</body>
</html>
答案 0 :(得分：0)
您需要使用SVG的getCTM()函数来获取当前的变换矩阵。然后，您可以将屏幕点转换回内部SVG坐标。然后，您可以放置工具提示的位置。
// create an SVG DOM point object
pt = pt = svg.createSVGPoint();
pt.x = screenXPosWithinSVG;
pt.y = screenYPosWithinSVG;
// Transform it back to SVG coordinate space
var svgCoord = pt.matrixTransform(svg.getCTM().inverse());
// Place tooltip at (svgCoord.x, svgCoord.y)