[英]MediaWiki How do I get the [Collapse] link to NOT move position with the text?
[英]How do I move tooltip text on a link?
我是D3的初學者。 目前我正在研究一個沒有強制力的網絡圖。 現在我在將鼠標懸停在鏈接上時顯示工具提示有問題。 顯示所需的文本,但始終位於左上角。
到目前為止,這就是我創建鏈接的方式:
rect.data.links = [
{"source":0,"target":1, "distance":100, "weight": 4, "color" : "black"},
{"source":1,"target":2, "distance":100, "weight": 12, "color" : "black"},
{"source":1,"target":3, "distance":100, "weight": 4, "color" : "black"},
{"source":2,"target":0, "distance": 100, "weight": 9, "color" : "black"},
{"source":2,"target":4, "distance": 100, "weight": 6, "color" : "black"},
{"source":0,"target":4, "distance": 100, "weight": 12, "color" : "black"},
{"source":3,"target":0, "distance": 100, "weight": 12, "color" : "black"},
{"source":3,"target":2, "distance": 100, "weight": 9, "color" : "black"}
];
// Initialize the links
var links = rect.svg
.selectAll("line")
.data(rect.data.links)
.enter()
.append("svg:g")
.attr("class", "link");
links
.append("line")
.attr("x1", function(l) {
var sourceNode = rect.data.nodes.filter(function(d, i) {
return i == l.source
})[0];
d3.select(this).attr("y1", sourceNode.y);
return sourceNode.x
})
.attr("x2", function(l) {
var targetNode = rect.data.nodes.filter(function(d, i) {
return i == l.target
})[0];
d3.select(this).attr("y2", targetNode.y);
return targetNode.x
})
.style('stroke', function (d) {
return d.color;
}
)
.style('stroke-width', function(d) {
return Math.sqrt(d.weight);
})
.on("mouseover", function() {
return tooltip_links.style("visibility", "visible");})
.on("mouseout", function() {
return tooltip_links.style("visibility", "hidden");
});
// create a tooltip with keywords
var keywords = links
.append("foreignObject")
.data(rect.data.links)
.attr("width", "170px")
.attr("height", "75px")
.attr("x", d => ((d.source.x + d.target.x) / 2))
.attr("y", d => ((d.source.y + d.target.y) / 2));
// create a tooltip
var tooltip_links = keywords
.append("xhtml:div")
.style("position", "absolute")
.style("visibility", "visible")
.text("Lorem ipsum");
這是一個小提琴: https://jsfiddle.net/9facu458/
如何強制鏈接工具提示出現在鏈接上?
你可以試試這個(適用於 D3 v3/v4):
tooltip_links
.style('left', `${d3.event.offsetX}px`)
.style('top', `${d3.event.offsetY}px`)
.style('visibility', 'visible');
請注意,您的小提琴一直卡住,請修復它。
更新:對於 D3 v6,使用:
tooltip_links
.style('left', e => `${e.offsetX}px`)
.style('top', e => `${e.offsetY}px`)
.style('visibility', 'visible');
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