d3：刷更改点击鼠标悬停 [英] d3: brush changes click to mouseover

问题描述

我正在尝试使用画笔选择，工具提示和点击事件的组合创建一个散点图，但是似乎一旦我在一个svg画布上添加了一个画笔，对象的所有点击事件都将映射到鼠标滚轮。有没有办法解决？以下示例代码和@ http://jsfiddle.net/7j8cr/

I'm trying to create a scatter plot with a combination of brush selection, tooltips and click events, but it seems that once I add a brush to an svg canvas, all click events on objects get mapped to mouseovers. Is there any way around this? Example code below and @ http://jsfiddle.net/7j8cr/

<script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script>

var my_circles = [{"x": 40, "y": 100, "r": 12},
              {"x": 100, "y": 40, "r": 8}],
    width = 400,
    height = 400,
    svg = d3.select("body").append("svg")
        .attr("width", width)
        .attr("height", height);

function click(d) { console.log("Clicky Clicky!") };
function mouseover(d) { console.log("I saw  mouse!") }

var brush = d3.svg.brush()
    .x(d3.scale.identity().domain([0, width]))
    .y(d3.scale.identity().domain([0, height]))

svg.call(brush);

svg.selectAll("dataObj")
    .data(my_circles)
    .enter().append("circle")
        .attr("r", function(d) { return d.r })
        .attr("cx", function(d) { return d.x })
        .attr("cy", function(d) { return d.y })
        .style("fill", "blue")
        .on("mouseover", mouseover)
        .on("click", click); 

</script>

点击圈子触发 mouseover（） ，您可以通过注释行

Clicking on the circles triggers mouseover(), and you can get the same action to trigger the correct event by commenting out the line

svg.call(brush);

但是显然你松了刷....有没有办法让所有3的行为正确？

But then obviously you loose the brush.... is there a way to get all 3 acting correctly?

推荐答案

点击事件没有被翻译成mousover，他们根本没有发生 - 你看到的鼠标悬停事件是什么时候您将光标移动到圆圈上以单击它。这个问题有一个简单的解决方案，但是您所需要做的就是将指针事件设置为所有 。

The click events are not getting translated to mousover, they are simply not happening -- the mouseover event you see is when you move the cursor over the circle to click it. The problem has an easy solution however -- all you need to do is set pointer-events to all on the circles.

完整的例子 here 。

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