Javascript vis.js中的多节点选择
我使用vis.js是因为我喜欢它的网络可视化模块。我想知道,因为我在文档中找不到它,是否可以选择多个节点 干杯Javascript vis.js中的多节点选择,javascript,networking,graph,data-visualization,chap-links-library,Javascript,Networking,Graph,Data Visualization,Chap Links Library,我使用vis.js是因为我喜欢它的网络可视化模块。我想知道,因为我在文档中找不到它,是否可以选择多个节点 干杯 Riccardo我刚刚发现,在vis.js中,您可以长按多个节点来选择它们。在以下位置的文档中搜索“可选”属性: 如果为true,则可以通过单击节点来选择网络中的节点。长的 按可用于选择多个节点 更新! 文档的链接是 将multiselect属性设置为true 将此节添加到网络选项对象 interaction: { multiselect: true} 如果您正在寻找一个矩形来选择
Riccardo我刚刚发现,在vis.js中,您可以长按多个节点来选择它们。在以下位置的文档中搜索“可选”属性: 如果为true,则可以通过单击节点来选择网络中的节点。长的 按可用于选择多个节点 更新! 文档的链接是 将multiselect属性设置为true 将此节添加到网络选项对象
interaction: { multiselect: true}
如果您正在寻找一个矩形来选择节点,只需查看visjs network github上的以下线程: 完整演示代码:
const nodes = new vis.DataSet([
{ id: 1, label: 'Node 1' },
{ id: 2, label: 'Node 2' },
{ id: 3, label: 'Node 3' },
{ id: 4, label: 'Node 4' },
{ id: 5, label: 'Node 5' }
]);
const edges = new vis.DataSet([
{ from: 1, to: 3 },
{ from: 1, to: 2 },
{ from: 2, to: 4 },
{ from: 2, to: 5 }
]);
const options = {
layout: { randomSeed: 2 },
interaction:{
hover: true,
multiselect: true
}
};
// Everything is in there
const makeMeMultiSelect = (container, network, nodes) => {
const NO_CLICK = 0;
const RIGHT_CLICK = 3;
// Disable default right-click dropdown menu
container[0].oncontextmenu = () => false;
// State
let drag = false, DOMRect = {};
// Selector
const canvasify = (DOMx, DOMy) => {
const { x, y } = network.DOMtoCanvas({ x: DOMx, y: DOMy });
return [x, y];
};
const correctRange = (start, end) =>
start < end ? [start, end] : [end, start];
const selectFromDOMRect = () => {
const [sX, sY] = canvasify(DOMRect.startX, DOMRect.startY);
const [eX, eY] = canvasify(DOMRect.endX, DOMRect.endY);
const [startX, endX] = correctRange(sX, eX);
const [startY, endY] = correctRange(sY, eY);
network.selectNodes(nodes.get().reduce(
(selected, { id }) => {
const { x, y } = network.getPositions(id)[id];
return (startX <= x && x <= endX && startY <= y && y <= endY) ?
selected.concat(id) : selected;
}, []
));
}
// Listeners
container.on("mousedown", function({ which, pageX, pageY }) {
// When mousedown, save the initial rectangle state
if(which === RIGHT_CLICK) {
Object.assign(DOMRect, {
startX: pageX - this.offsetLeft,
startY: pageY - this.offsetTop,
endX: pageX - this.offsetLeft,
endY: pageY - this.offsetTop
});
drag = true;
}
});
container.on("mousemove", function({ which, pageX, pageY }) {
// Make selection rectangle disappear when accidently mouseupped outside 'container'
if(which === NO_CLICK && drag) {
drag = false;
network.redraw();
}
// When mousemove, update the rectangle state
else if(drag) {
Object.assign(DOMRect, {
endX: pageX - this.offsetLeft,
endY: pageY - this.offsetTop
});
network.redraw();
}
});
container.on("mouseup", function({ which }) {
// When mouseup, select the nodes in the rectangle
if(which === RIGHT_CLICK) {
drag = false;
network.redraw();
selectFromDOMRect();
}
});
// Drawer
network.on('afterDrawing', ctx => {
if(drag) {
const [startX, startY] = canvasify(DOMRect.startX, DOMRect.startY);
const [endX, endY] = canvasify(DOMRect.endX, DOMRect.endY);
ctx.setLineDash([5]);
ctx.strokeStyle = 'rgba(78, 146, 237, 0.75)';
ctx.strokeRect(startX, startY, endX - startX, endY - startY);
ctx.setLineDash([]);
ctx.fillStyle = 'rgba(151, 194, 252, 0.45)';
ctx.fillRect(startX, startY, endX - startX, endY - startY);
}
});
}; // end makeMeMultiSelect
$(document).ready(() => {
const container = $("#network");
const network = new vis.Network(container[0], { nodes, edges }, options);
makeMeMultiSelect(container, network, nodes);
});
const nodes=new vis.DataSet([
{id:1,标签:'Node 1'},
{id:2,标签:'Node 2'},
{id:3,标签:'Node 3'},
{id:4,标签:'Node 4'},
{id:5,标签:'Node 5'}
]);
const edges=new vis.DataSet([
{从:1到:3},
{从:1到:2},
{从:2到:4},
{从:2到:5}
]);
常量选项={
布局:{randomSeed:2},
互动:{
哈弗:没错,
多选:正确
}
};
//一切都在里面
const makeMeMultiSelect=(容器、网络、节点)=>{
const NO_CLICK=0;
常量右键单击=3;
//禁用默认的右键单击下拉菜单
容器[0]。oncontextmenu=()=>false;
//陈述
让drag=false,DOMRect={};
//选择器
const canvasify=(DOMx,DOMy)=>{
const{x,y}=network.DOMtoCanvas({x:DOMx,y:DOMy});
返回[x,y];
};
常数校正范围=(开始、结束)=>
开始<结束?[开始,结束]:[结束,开始];
const selectFromDOMRect=()=>{
const[sX,sY]=canvasify(DOMRect.startX,DOMRect.startY);
const[eX,eY]=canvasify(DOMRect.endX,DOMRect.endY);
常数[startX,endX]=校正范围(sX,eX);
常数[startY,endY]=校正范围(sY,eY);
network.selectNodes(nodes.get().reduce(
(选定,{id})=>{
const{x,y}=network.getPositions(id)[id];
返回(startX,因为您可以使用ctrl+click和shift+click进行多选。编辑:抱歉,这仅适用于时间线,网络尚不支持。长时间单击和ctrl+click也适用于网络,但仅当您启用多选时。有没有办法使用简单单击而不是长时间单击进行多选?您好,您可以使用绑定到事件selectNode和取消选择Node。通过这些事件,您可以知道所需的选定节点是什么。然后,您可以使用方法selectNodes。