我试图仅转换鼠标悬停在其上的文本路径,但是下面示例中的两个文本路径均被转换。有没有办法只在悬停时过渡一个?
对于下面的代码,我修改了this example,使用的是D3.js的第5版。
这是脚本:
<script>
//Create the SVG
var svg = d3.select("body").append("svg")
.attr("width", 900)
.attr("height", 900);
class graph {
constructor(opts){
this.x = opts.x;
this.y = opts.y;
this.container = svg.append('g')
.attr('class', 'country-wrapper')
.attr('transform', 'translate(' + this.x + ',' + this.y + ')')
.on('mouseover', this.handleMouseOver);
this.background = this.container.append('g')
.attr('class', 'background-viz')
this.appendText();
}
appendText(){
var d = "M0,300 A200,200 0 0,1 400,300";
console.log(d);
var path = this.background.append("path")
.attr("id", "wavy")
.attr("d", d)
.style("fill", "none")
.style("stroke", "#AAAAAA")
.style("stroke-dasharray", "5,5");
var textArc = this.background.append("text")
.style("text-anchor","middle")
.append("textPath")
.attr("xlink:href", "#wavy")
.attr("startOffset", "50%")
.text("placeholder for text here");
}
handleMouseOver(){
var d = "M75,300 A125,125 0 0,1 325,300";
console.log('new ', d);
d3.select(this).select('.background-viz').selectAll('path')
.transition()
.attr("d", "M75,300 A125,125 0 0,1 325,300");
}
}
for (var i = 0; i < 2; i++){
new graph({
x: i * 900/2,
y: 0
});
}
</script>
答案 0 :(得分:2)
问题出在以下几行:
textPath.attr("xlink:href", "#wavy")
由于两个路径具有相同的ID,并且当您将鼠标悬停在一个路径上时,您会看到两个textPath都在过渡。您必须根据一些值来区分ID。最好的解决方案是传递一个ID并使用它:
方法如下:
在创建路径,文本(即到每个实例)的同时传递ID
new graph({
x: i * 900/2,
y: 0,
id: i
});
使用它/将其应用于路径和textPaths:
var path = this.background.append("path")
.attr("id", "wavy-"+this.id)
....
.append("textPath")
.attr("xlink:href", "#wavy-"+this.id)
使用以上更改,这是一个代码段:
//Create the SVG
var svg = d3.select("body").append("svg")
.attr("width", 900)
.attr("height", 900);
class graph {
constructor(opts){
this.x = opts.x;
this.y = opts.y;
this.id = opts.id;
this.container = svg.append('g')
.attr('class', 'country-wrapper')
.attr('transform', 'translate(' + this.x + ',' + this.y + ')')
.on('mouseover', this.handleMouseOver);
this.background = this.container.append('g')
.attr('class', 'background-viz')
this.appendText();
}
appendText(){
var d = "M0,300 A200,200 0 0,1 400,300";
var path = this.background.append("path")
.attr("id", "wavy-"+this.id)
.attr("d", d)
.style("fill", "none")
.style("stroke", "#AAAAAA")
.style("stroke-dasharray", "5,5");
var textArc = this.background.append("text")
.style("text-anchor","middle")
.append("textPath")
.attr("xlink:href", "#wavy-"+this.id)
.attr("startOffset", "50%")
.text("placeholder for text here");
}
handleMouseOver(){
var d = "M75,300 A125,125 0 0,1 325,300";
//console.log('new ', d);
d3.select(this).select('.background-viz').selectAll('path')
.transition()
.attr("d", "M75,300 A125,125 0 0,1 325,300");
}
}
for (var i = 0; i < 2; i++){
new graph({
x: i * 900/2,
y: 0,
id: i
});
}
<script src="https://d3js.org/d3.v5.min.js"></script>
希望这会有所帮助。