Javascript 在深入到子节点时保持d3树映射的状态
我正在开发D3TreemapV5,在该版本中,我需要在每次用户单击时将treemap的状态保存在localstorage中。我的密码在里面 当用户单击顶部父磁贴时,它将向下钻取到子磁贴。当用户重新加载浏览器时,如何在本地存储中保持这种状态,他希望看到向下钻取的子图块Javascript 在深入到子节点时保持d3树映射的状态,javascript,reactjs,d3.js,Javascript,Reactjs,D3.js,我正在开发D3TreemapV5,在该版本中,我需要在每次用户单击时将treemap的状态保存在localstorage中。我的密码在里面 当用户单击顶部父磁贴时,它将向下钻取到子磁贴。当用户重新加载浏览器时,如何在本地存储中保持这种状态,他希望看到向下钻取的子图块 class Treegraph extends React.Component { createTreeChart = () => { const width = 550; const height = 5
class Treegraph extends React.Component {
createTreeChart = () => {
const width = 550;
const height = 500;
var paddingAllowance = 2;
const format = d3.format(",d");
const checkLowVal = d => {
console.log("ChecklowVal", d);
if (d.value < 2) {
return true;
}
};
const name = d =>
d
.ancestors()
.reverse()
.map(d => d.data.name)
.join(" / ");
function tile(node, x0, y0, x1, y1) {
d3.treemapBinary(node, 0, 0, width, height);
for (const child of node.children) {
child.x0 = x0 + (child.x0 / width) * (x1 - x0);
child.x1 = x0 + (child.x1 / width) * (x1 - x0);
child.y0 = y0 + (child.y0 / height) * (y1 - y0);
child.y1 = y0 + (child.y1 / height) * (y1 - y0);
}
}
const treemap = data =>
d3.treemap().tile(tile)(
d3
.hierarchy(data)
.sum(d => d.value)
.sort((a, b) => b.value - a.value)
);
const svg = d3
.select("#chart")
.append("svg")
.attr("viewBox", [0.5, -30.5, width, height + 30])
.style("font", "16px sans-serif");
const x = d3.scaleLinear().rangeRound([0, width]);
const y = d3.scaleLinear().rangeRound([0, height]);
let group = svg.append("g").call(render, treemap(data));
function render(group, root) {
const node = group
.selectAll("g")
.data(root.children.concat(root))
.join("g");
node
.filter(d => (d === root ? d.parent : d.children))
.attr("cursor", "pointer")
.on("click", d => (d === root ? zoomout(root) : zoomin(d)));
var tool = d3
.select("body")
.append("div")
.attr("class", "toolTip");
d3.select(window.frameElement).style("height", height - 20 + "px");
d3.select(window.frameElement).style("width", width - 20 + "px");
node
.append("rect")
.attr("id", d => (d.leafUid = "leaf"))
.attr("fill", d =>
d === root ? "#fff" : d.children ? "#045c79" : "#045c79"
)
.attr("stroke", "#fff")
.on("mousemove", function(d) {
tool.style("left", d3.event.pageX + 10 + "px");
tool.style("top", d3.event.pageY - 20 + "px");
tool.style("display", "inline-block");
tool.html(`${d.data.name}<br />(${format(d.data.value)})`);
})
.on("click", function(d) {
tool.style("display", "none");
})
.on("mouseout", function(d) {
tool.style("display", "none");
});
node
.append("foreignObject")
.attr("class", "foreignObject")
.attr("width", function(d) {
return d.dx - paddingAllowance;
})
.attr("height", function(d) {
return d.dy - paddingAllowance;
})
.append("xhtml:body")
.attr("class", "labelbody")
.append("div")
.attr("class", "label")
.text(function(d) {
return d.name;
})
.attr("text-anchor", "middle");
node
.append("clipPath")
.attr("id", d => (d.clipUid = "clip"))
.append("use")
.attr("xlink:href", d => d.leafUid.href);
node
.append("text")
.attr("clip-path", d => d.clipUid)
.attr("font-weight", d => (d === root ? "bold" : null))
.attr("font-size", d => {
if (d === root) return "0.8em";
const width = x(d.x1) - x(d.x0),
height = y(d.y1) - y(d.y0);
return Math.max(
Math.min(
width / 5,
height / 2,
Math.sqrt(width * width + height * height) / 25
),
9
);
})
.attr("text-anchor", d => (d === root ? null : "middle"))
.attr("transform", d =>
d === root
? null
: `translate(${(x(d.x1) - x(d.x0)) / 2}, ${(y(d.y1) - y(d.y0)) /
2})`
)
.selectAll("tspan")
.data(d =>
d === root
? name(d).split(/(?=\/)/g)
: checkLowVal(d)
? d.data.name.split(/(\s+)/).concat(format(d.data.value))
: d.data.name.split(/(\s+)/).concat(format(d.data.value))
)
.join("tspan")
.attr("x", 3)
.attr(
"y",
(d, i, nodes) =>
`${(i === nodes.length - 1) * 0.3 + (i - nodes.length / 2) * 0.9}em`
)
.text(d => d);
node
.selectAll("text")
.classed("text-title", d => d === root)
.classed("text-tile", d => d !== root)
.filter(d => d === root)
.selectAll("tspan")
.attr("y", "1.1em")
.attr("x", undefined);
group.call(position, root);
}
function position(group, root) {
group
.selectAll("g")
.attr("transform", d =>
d === root ? `translate(0,-30)` : `translate(${x(d.x0)},${y(d.y0)})`
)
.select("rect")
.attr("width", d => (d === root ? width : x(d.x1) - x(d.x0)))
.attr("height", d => (d === root ? 30 : y(d.y1) - y(d.y0)));
}
// When zooming in, draw the new nodes on top, and fade them in.
function zoomin(d) {
console.log("The zoomin func", d.data);
x.domain([d.x0, d.x1]);
y.domain([d.y0, d.y1]);
const group0 = group.attr("pointer-events", "none");
const group1 = (group = svg.append("g").call(render, d));
svg
.transition()
.duration(750)
.call(t =>
group0
.transition(t)
.remove()
.call(position, d.parent)
)
.call(t =>
group1
.transition(t)
.attrTween("opacity", () => d3.interpolate(0, 1))
.call(position, d)
);
}
// When zooming out, draw the old nodes on top, and fade them out.
function zoomout(d) {
console.log("The zoomout func", d.parent.data);
x.domain([d.parent.x0, d.parent.x1]);
y.domain([d.parent.y0, d.parent.y1]);
const group0 = group.attr("pointer-events", "none");
const group1 = (group = svg.insert("g", "*").call(render, d.parent));
svg
.transition()
.duration(750)
.call(t =>
group0
.transition(t)
.remove()
.attrTween("opacity", () => d3.interpolate(1, 0))
.call(position, d)
)
.call(t => group1.transition(t).call(position, d.parent));
}
return svg.node();
};
componentDidMount() {
this.createTreeChart();
}
render() {
return (
<React.Fragment>
<div id="chart" />
</React.Fragment>
);
}
}
classtreegraph扩展了React.Component{
createTreeChart=()=>{
常数宽度=550;
常数高度=500;
var paddingAllowance=2;
常量格式=d3.格式(“,d”);
常量checkLowVal=d=>{
console.log(“ChecklowVal”,d);
如果(d.值<2){
返回true;
}
};
const name=d=>
D
.祖先()
.reverse()
.map(d=>d.data.name)
.加入(“/”);
功能块(节点x0、y0、x1、y1){
d3.树状结构(节点,0,0,宽度,高度);
for(node.children的常量子节点){
child.x0=x0+(child.x0/宽度)*(x1-x0);
child.x1=x0+(child.x1/宽度)*(x1-x0);
child.y0=y0+(child.y0/身高)*(y1-y0);
child.y1=y0+(child.y1/身高)*(y1-y0);
}
}
常量树映射=数据=>
d3.treemap().tile(tile)(
d3
.层次结构(数据)
.sum(d=>d.value)
.sort((a,b)=>b.value-a.value)
);
常量svg=d3
.选择(“图表”)
.append(“svg”)
.attr(“视图框”[0.5,-30.5,宽度,高度+30])
.style(“字体”,“16px无衬线”);
常量x=d3.scaleLinear().rangeRound([0,宽度]);
常量y=d3.scaleLinear().rangeRound([0,高度]);
让group=svg.append(“g”).call(render,treemap(data));
函数呈现(组、根){
常量节点=组
.全选(“g”)
.data(root.children.concat(root))
.加入(“g”);
节点
.filter(d=>(d==root?d.parent:d.children))
.attr(“光标”、“指针”)
.on(“单击”,d=>(d==root?zoomout(root):zoomin(d));
变量工具=d3
.选择(“正文”)
.附加(“div”)
.attr(“类”、“工具提示”);
d3.选择(window.frameElement).style(“height”,height-20+“px”);
d3.选择(window.frameElement).style(“宽度”,宽度-20+“px”);
节点
.append(“rect”)
.attr(“id”,d=>(d.leafUid=“leaf”))
.attr(“填充”,d=>
d===根?#fff:d.儿童?#045c79:“#045c79”
)
.attr(“笔划”、“fff”)
.on(“mousemove”,函数(d){
工具样式(“左”,d3.event.pageX+10+“px”);
工具样式(“top”,d3.event.pageY-20+“px”);
工具样式(“显示”、“内联块”);
html(`${d.data.name}
(${format(d.data.value)})`);
})
.打开(“单击”,功能(d){
工具样式(“显示”、“无”);
})
.开启(“鼠标出”,功能(d){
工具样式(“显示”、“无”);
});
节点
.append(“外来对象”)
.attr(“类”、“外来对象”)
.attr(“宽度”,函数(d){
返回d.dx-填充允许值;
})
.attr(“高度”,功能(d){
返回d.dy-填充允许值;
})
.append(“xhtml:body”)
.attr(“类”、“标签体”)
.附加(“div”)
.attr(“类别”、“标签”)
.文本(功能(d){
返回d.name;
})
.attr(“文本锚定”、“中间”);
节点
.append(“clipPath”)
.attr(“id”,d=>(d.clipUid=“clip”))
.append(“使用”)
.attr(“xlink:href”,d=>d.leafUid.href);
节点
.append(“文本”)
.attr(“剪辑路径”,d=>d.clipUid)
.attr(“字体重量”,d=>(d==根?“粗体”:null))
.attr(“字体大小”,d=>{
如果(d==根)返回“0.8em”;
常数宽度=x(d.x1)-x(d.x0),
高度=y(d.y1)-y(d.y0);
返回Math.max(
Math.min(
宽度/5,
高度/2,
数学sqrt(宽*宽+高*高)/25
),
9
);
})
.attr(“文本锚定”,d=>(d==根?null:“中间”))
.attr(“转换”,d=>
d==根
无效的
:`translate(${(x(d.x1)-x(d.x0))/2},${(y(d.y1)-y(d.y0))/
2})`
)
.selectAll(“tspan”)
.数据(d=>
d==根
名称(d).拆分(/(?=\/)/g)
:checkLowVal(d)
?d.data.name.split(/(\s+/).concat(格式(d.data.value))
:d.data.name.split(/(\s+/).concat(格式(d.data.value))
)
.加入(“tspan”)
.attr(“x”,3)
艾特先生(
“y”,
(d,i,节点)=>
`${(i==nodes.length-1)*0.3+(i-nodes.length/2)*0.9}em`
)
.text(d=>d);
节点
.selectAll(“文本”)
.classed(“文本标题”,d=>d==root)
.classed(“文本平铺”,d=>d!==root)
.filter(d=>d==root)
.selectAll(“tspan”)
.attr(“y”,“1.1米”)
.attr(“x”,未定义);
组调用(位置、根);
}
功能位置(组、根){
组
.全选(“g”)
.attr(“转换”,d=>
d==root?`translate(0,-30)`:`translate(${x(d.x0)},${y(d.y0)})`
)
.选择(“rect”)
.attr(“宽度”,d=>(d==根?宽度:x(d.x1)-x(d.x0)))
.attr(“高度”,d=>(d==根?30:y(d.y1)-y(d.y0));
}
//放大时,在顶部绘制新节点,然后淡入淡入。
函数缩放(d){
log(“缩放函数”,d.data);
x、 域([d.x0,d.x1]);
y、 域([d.y0,d.y1]);
constgroup0=group.attr(“指针事件”,“无”);
constgroup1=(group=svg.append(“g”).call(render,d));
svg
.transition()
.持续时间(750)
.call(t=>
第0组
.过渡(t)