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graph.ts
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graph.ts
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import EventEmitter from '@antv/event-emitter';
import { ICanvas, IGroup, Point } from '@antv/g-base';
import { requestAnimationFrame } from '@antv/g-mobile/esm/util/time';
import { ext } from '@antv/matrix-util';
import { clone, deepMix, each, isPlainObject, isString } from '@antv/util';
import {
getDegree,
getAdjMatrix as getAdjacentMatrix,
Stack,
floydWarshall,
} from '@antv/algorithm';
import { IAbstractGraph } from '../interface/graph';
import { IEdge, INode, ICombo } from '../interface/item';
import {
GraphAnimateConfig,
GraphOptions,
EdgeConfig,
GraphData,
Item,
ITEM_TYPE,
ModelConfig,
NodeConfig,
NodeMap,
Padding,
TreeGraphData,
ComboConfig,
ModeOption,
ModeType,
States,
ComboTree,
HullCfg,
IG6GraphEvent,
} from '../types';
import { move } from '../util/math';
import { dataValidation, singleDataValidation } from '../util/validation';
import Global from '../global';
import { ItemController, ModeController, StateController, ViewController } from './controller';
import { plainCombosToTrees, traverseTree, reconstructTree, traverseTreeUp } from '../util/graphic';
import Hull from '../item/hull';
const { transform } = ext;
const NODE = 'node';
export interface PrivateGraphOption extends GraphOptions {
data: GraphData;
// capture event
event: boolean;
nodes: NodeConfig[];
edges: EdgeConfig[];
vedges: EdgeConfig[];
combos: ComboConfig[];
itemMap: NodeMap;
callback: () => void;
/**
* 格式:
* {
* hover: [Node, Node],
* selected: [Node]
* }
*/
states: States;
}
export default abstract class AbstractGraph extends EventEmitter implements IAbstractGraph {
protected animating: boolean;
protected cfg: GraphOptions & { [key: string]: any };
public destroyed: boolean;
// undo 栈
protected undoStack: Stack;
// redo 栈
protected redoStack: Stack;
constructor(cfg: GraphOptions) {
super();
this.cfg = deepMix(this.getDefaultCfg(), cfg);
this.init();
this.animating = false;
this.destroyed = false;
// 启用 stack 后,实例化 undoStack 和 redoStack
if (this.cfg.enabledStack) {
// 实例化 undo 和 redo 栈
this.undoStack = new Stack(this.cfg.maxStep);
this.redoStack = new Stack(this.cfg.maxStep);
}
}
protected init() {
this.initCanvas();
// instance controller
const viewController = new ViewController(this);
const modeController = new ModeController(this);
const itemController = new ItemController(this);
const stateController = new StateController(this);
this.set({
viewController,
modeController,
itemController,
stateController,
});
// 初始化布局机制
this.initLayoutController();
// 初始化事件机制
this.initEventController();
this.initGroups();
/** 初始化插件 */
this.initPlugins();
requestAnimationFrame(this.onTick.bind(this));
}
protected abstract initLayoutController(): void;
protected abstract initEventController(): void;
/**
* initCanvas 需要在 PC 和 Mobile 分别实现
*/
protected abstract initCanvas(): void;
/**
* initPlugins 需要在 PC 和 Mobile 分别实现
*/
protected abstract initPlugins(): void;
// 初始化所有 Group
protected initGroups(): void {
const canvas: ICanvas = this.get('canvas');
const el: HTMLElement = this.get('canvas').get('el');
const { id } = el;
const group: IGroup = canvas.addGroup({
id: `${id}-root`,
className: Global.rootContainerClassName,
});
if (this.get('groupByTypes')) {
const edgeGroup: IGroup = group.addGroup({
id: `${id}-edge`,
className: Global.edgeContainerClassName,
});
const nodeGroup: IGroup = group.addGroup({
id: `${id}-node`,
className: Global.nodeContainerClassName,
});
const comboGroup: IGroup = group.addGroup({
id: `${id}-combo`,
className: Global.comboContainerClassName,
});
// 用于存储自定义的群组
comboGroup.toBack();
this.set({ nodeGroup, edgeGroup, comboGroup });
}
const delegateGroup: IGroup = group.addGroup({
id: `${id}-delegate`,
className: Global.delegateContainerClassName,
});
this.set({ delegateGroup });
this.set('group', group);
}
// eslint-disable-next-line class-methods-use-this
public getDefaultCfg(): Partial<PrivateGraphOption> {
return {
/**
* Container could be dom object or dom id
*/
container: undefined,
/**
* Canvas width
* unit pixel if undefined force fit width
*/
width: undefined,
/**
* Canvas height
* unit pixel if undefined force fit height
*/
height: undefined,
/**
* renderer canvas or svg
* @type {string}
*/
renderer: 'canvas',
/**
* control graph behaviors
*/
modes: {},
/**
* 注册插件
*/
plugins: [],
/**
* source data
*/
data: {},
/**
* Fit view padding (client scale)
*/
fitViewPadding: 10,
/**
* Minimum scale size
*/
minZoom: 0.2,
/**
* Maxmum scale size
*/
maxZoom: 10,
/**
* capture events
*/
event: true,
/**
* group node & edges into different graphic groups
*/
groupByTypes: true,
/**
* determine if it's a directed graph
*/
directed: false,
/**
* when data or shape changed, should canvas draw automatically
*/
autoPaint: true,
/**
* store all the node instances
*/
nodes: [],
/**
* store all the edge instances
*/
edges: [],
/**
* store all the combo instances
*/
combos: [],
/**
* store all the edge instances which are virtual edges related to collapsed combo
*/
vedges: [],
/**
* all the instances indexed by id
*/
itemMap: {},
/**
* 边直接连接到节点的中心,不再考虑锚点
*/
linkCenter: false,
/**
* 默认的节点配置,data 上定义的配置会覆盖这些配置。例如:
* defaultNode: {
* type: 'rect',
* size: [60, 40],
* style: {
* //... 样式配置项
* }
* }
* 若数据项为 { id: 'node', x: 100, y: 100 }
* 实际创建的节点模型是 { id: 'node', x: 100, y: 100, type: 'rect', size: [60, 40] }
* 若数据项为 { id: 'node', x: 100, y: 100, type: 'circle' }
* 实际创建的节点模型是 { id: 'node', x: 100, y: 100, type: 'circle', size: [60, 40] }
*/
defaultNode: {},
/**
* 默认边配置,data 上定义的配置会覆盖这些配置。用法同 defaultNode
*/
defaultEdge: {},
/**
* 节点默认样式,也可以添加状态样式
* 例如:
* const graph = new G6.Graph({
* nodeStateStyles: {
* selected: { fill: '#ccc', stroke: '#666' },
* active: { lineWidth: 2 }
* },
* ...
* });
*
*/
nodeStateStyles: {},
/**
* 边默认样式,用法同nodeStateStyle
*/
edgeStateStyles: {},
/**
* graph 状态
*/
states: {},
/**
* 是否启用全局动画
*/
animate: false,
/**
* 动画设置,仅在 animate 为 true 时有效
*/
animateCfg: {
/**
* 帧回调函数,用于自定义节点运动路径,为空时线性运动
*/
onFrame: undefined,
/**
* 动画时长(ms)
*/
duration: 500,
/**
* 指定动画动效
*/
easing: 'easeLinear',
},
callback: undefined,
// 默认不启用 undo & redo 功能
enabledStack: false,
// 只有当 enabledStack 为 true 时才起作用
maxStep: 10,
// 存储图上的 tooltip dom,方便销毁
tooltips: [],
};
}
/**
* 将值设置到 this.cfg 变量上面
* @param key 键 或 对象值
* @param val 值
*/
public set<T = any>(key: string | object, val?: T): AbstractGraph {
if (isPlainObject(key)) {
this.cfg = { ...this.cfg, ...key };
} else {
this.cfg[key] = val;
}
return this;
}
/**
* 获取 this.cfg 中的值
* @param key 键
*/
public get(key: string) {
return this.cfg[key];
}
/**
* 获取 graph 的根图形分组
* @return 根 group
*/
public getGroup(): IGroup {
return this.get('group');
}
/**
* 获取 graph 的 DOM 容器
* @return DOM 容器
*/
public getContainer(): HTMLElement {
return this.get('container');
}
/**
* 获取 graph 的最小缩放比例
* @return minZoom
*/
public getMinZoom(): number {
return this.get('minZoom');
}
/**
* 设置 graph 的最小缩放比例
* @return minZoom
*/
public setMinZoom(ratio: number) {
return this.set('minZoom', ratio);
}
/**
* 获取 graph 的最大缩放比例
* @param maxZoom
*/
public getMaxZoom(): number {
return this.get('maxZoom');
}
/**
* 设置 graph 的最大缩放比例
* @param maxZoom
*/
public setMaxZoom(ratio: number) {
return this.set('maxZoom', ratio);
}
/**
* 获取 graph 的宽度
* @return width
*/
public getWidth(): number {
return this.get('width');
}
/**
* 获取 graph 的高度
* @return width
*/
public getHeight(): number {
return this.get('height');
}
/**
* 清理元素多个状态
* @param {string|Item} item 元素id或元素实例
* @param {string[]} states 状态
*/
public clearItemStates(item: Item | string, states?: string[] | string): void {
if (isString(item)) {
item = this.findById(item);
}
const itemController: ItemController = this.get('itemController');
if (!states) {
states = item.get<string[]>('states');
}
itemController.clearItemStates(item, states);
const stateController: StateController = this.get('stateController');
stateController.updateStates(item, states, false);
}
/**
* 设置各个节点样式,以及在各种状态下节点 keyShape 的样式。
* 若是自定义节点切在各种状态下
* graph.node(node => {
* return {
* type: 'rect',
* label: node.id,
* style: { fill: '#666' },
* stateStyles: {
* selected: { fill: 'blue' },
* custom: { fill: 'green' }
* }
* }
* });
* @param {function} nodeFn 指定每个节点样式
*/
public node(nodeFn: (config: NodeConfig) => Partial<NodeConfig>): void {
if (typeof nodeFn === 'function') {
this.set('nodeMapper', nodeFn);
}
}
/**
* 设置各个边样式
* @param {function} edgeFn 指定每个边的样式,用法同 node
*/
public edge(edgeFn: (config: EdgeConfig) => Partial<EdgeConfig>): void {
if (typeof edgeFn === 'function') {
this.set('edgeMapper', edgeFn);
}
}
/**
* 设置各个 combo 的配置
* @param comboFn
*/
public combo(comboFn: (config: ComboConfig) => Partial<ComboConfig>): void {
if (typeof comboFn === 'function') {
this.set('comboMapper', comboFn);
}
}
/**
* 根据 ID 查询图元素实例
* @param id 图元素 ID
*/
public findById(id: string): Item {
return this.get('itemMap')[id];
}
/**
* 根据对应规则查找单个元素
* @param {ITEM_TYPE} type 元素类型(node | edge | group)
* @param {(item: T, index: number) => T} fn 指定规则
* @return {T} 元素实例
*/
public find<T extends Item>(
type: ITEM_TYPE,
fn: (item: T, index?: number) => boolean,
): T | undefined {
let result: T | undefined;
const items = this.get(`${type}s`);
// eslint-disable-next-line consistent-return
each(items, (item, i) => {
if (fn(item, i)) {
result = item;
return result;
}
});
return result;
}
/**
* 查找所有满足规则的元素
* @param {string} type 元素类型(node|edge)
* @param {string} fn 指定规则
* @return {array} 元素实例
*/
public findAll<T extends Item>(type: ITEM_TYPE, fn: (item: T, index?: number) => boolean): T[] {
const result: T[] = [];
each(this.get(`${type}s`), (item, i) => {
if (fn(item, i)) {
result.push(item);
}
});
return result;
}
/**
* 查找所有处于指定状态的元素
* @param {string} type 元素类型(node|edge)
* @param {string} state 状态
* @return {object} 元素实例
*/
public findAllByState<T extends Item>(type: ITEM_TYPE, state: string): T[] {
return this.findAll(type, (item) => item.hasState(state));
}
/**
* 平移画布
* @param dx 水平方向位移
* @param dy 垂直方向位移
*/
public translate(dx: number, dy: number): void {
const group: IGroup = this.get('group');
let matrix = clone(group.getMatrix());
if (!matrix) {
matrix = [1, 0, 0, 0, 1, 0, 0, 0, 1];
}
matrix = transform(matrix, [['t', dx, dy]]);
group.setMatrix(matrix);
this.emit('viewportchange', { action: 'translate', matrix: group.getMatrix() });
this.autoPaint();
}
/**
* 平移画布到某点
* @param {number} x 水平坐标
* @param {number} y 垂直坐标
*/
public moveTo(x: number, y: number): void {
const group: IGroup = this.get('group');
move(group, { x, y });
this.emit('viewportchange', { action: 'move', matrix: group.getMatrix() });
}
/**
* 调整视口适应视图
* @param {object} padding 四周围边距
*/
public fitView(padding?: Padding): void {
if (padding) {
this.set('fitViewPadding', padding);
}
const viewController: ViewController = this.get('viewController');
viewController.fitView();
this.autoPaint();
}
/**
* 调整视口适应视图,不缩放,仅将图 bbox 中心对齐到画布中心
*/
public fitCenter(): void {
const viewController: ViewController = this.get('viewController');
viewController.fitCenter();
this.autoPaint();
}
/**
* 新增行为
* @param {string | ModeOption | ModeType[]} behaviors 添加的行为
* @param {string | string[]} modes 添加到对应的模式
* @return {Graph} Graph
*/
public addBehaviors(
behaviors: string | ModeOption | ModeType[],
modes: string | string[],
): AbstractGraph {
const modeController: ModeController = this.get('modeController');
modeController.manipulateBehaviors(behaviors, modes, true);
return this;
}
/**
* 移除行为
* @param {string | ModeOption | ModeType[]} behaviors 移除的行为
* @param {string | string[]} modes 从指定的模式中移除
* @return {Graph} Graph
*/
public removeBehaviors(
behaviors: string | ModeOption | ModeType[],
modes: string | string[],
): AbstractGraph {
const modeController: ModeController = this.get('modeController');
modeController.manipulateBehaviors(behaviors, modes, false);
return this;
}
/**
* 更新行为参数
* @param {string | ModeOption | ModeType} behavior 需要更新的行为
* @param {string | string[]} modes 指定的模式中的行为,不指定则为 default
* @return {Graph} Graph
*/
public updateBehavior(behavior: string, newCfg: object, mode?: string): AbstractGraph {
const modeController: ModeController = this.get('modeController');
modeController.updateBehavior(behavior, newCfg, mode);
return this;
}
/**
* 伸缩窗口
* @param ratio 伸缩比例
* @param center 以center的x, y坐标为中心缩放
*/
public zoom(ratio: number, center?: Point): void {
const group: IGroup = this.get('group');
let matrix = clone(group.getMatrix());
const minZoom: number = this.get('minZoom');
const maxZoom: number = this.get('maxZoom');
if (!matrix) {
matrix = [1, 0, 0, 0, 1, 0, 0, 0, 1];
}
if (center) {
matrix = transform(matrix, [
['t', -center.x, -center.y],
['s', ratio, ratio],
['t', center.x, center.y],
]);
} else {
matrix = transform(matrix, [['s', ratio, ratio]]);
}
if ((minZoom && matrix[0] < minZoom) || (maxZoom && matrix[0] > maxZoom)) {
return;
}
// matrix = [2, 0, 0, 0, 2, 0, -125, -125, 1];
group.setMatrix(matrix);
this.emit('viewportchange', { action: 'zoom', matrix });
this.autoPaint();
}
/**
* 伸缩视口到一固定比例
* @param {number} toRatio 伸缩比例
* @param {Point} center 以center的x, y坐标为中心缩放
*/
public zoomTo(toRatio: number, center?: Point): void {
const ratio = toRatio / this.getZoom();
this.zoom(ratio, center);
}
/**
* 将元素移动到视口中心
* @param {Item} item 指定元素
* @param {boolean} animate 是否带有动画地移动
* @param {GraphAnimateConfig} animateCfg 若带有动画,动画的配置项
*/
public focusItem(item: Item | string, animate?: boolean, animateCfg?: GraphAnimateConfig): void {
const viewController: ViewController = this.get('viewController');
let isAnimate = false;
if (animate) isAnimate = true;
else if (animate === undefined) isAnimate = this.get('animate');
let curAniamteCfg = {} as GraphAnimateConfig;
if (animateCfg) curAniamteCfg = animateCfg;
else if (animateCfg === undefined) curAniamteCfg = this.get('animateCfg');
viewController.focus(item, isAnimate, curAniamteCfg);
this.autoPaint();
}
/**
* 自动重绘
* @internal 仅供内部更新机制调用,外部根据需求调用 render 或 paint 接口
*/
public autoPaint(): void {
if (this.get('autoPaint')) {
this.paint();
}
}
/**
* 仅画布重新绘制
*/
public paint(): void {
this.emit('beforepaint');
this.get('canvas').draw();
this.emit('afterpaint');
}
/**
* 将屏幕坐标转换为视口坐标
* @param {number} clientX 屏幕x坐标
* @param {number} clientY 屏幕y坐标
* @return {Point} 视口坐标
*/
public getPointByClient(clientX: number, clientY: number): Point {
const viewController: ViewController = this.get('viewController');
return viewController.getPointByClient(clientX, clientY);
}
/**
* 将绘制坐标转换为屏幕坐标
* @param {number} x 绘制坐标 x
* @param {number} y 绘制坐标 y
* @return {Point} 绘制坐标
*/
public getClientByPoint(x: number, y: number): Point {
const viewController: ViewController = this.get('viewController');
return viewController.getClientByPoint(x, y);
}
/**
* 将画布坐标转换为绘制坐标
* @param {number} canvasX 画布 x 坐标
* @param {number} canvasY 画布 y 坐标
* @return {object} 绘制坐标
*/
public getPointByCanvas(canvasX: number, canvasY: number): Point {
const viewController: ViewController = this.get('viewController');
return viewController.getPointByCanvas(canvasX, canvasY);
}
/**
* 将绘制坐标转换为画布坐标
* @param {number} x 绘制坐标 x
* @param {number} y 绘制坐标 y
* @return {object} 画布坐标
*/
public getCanvasByPoint(x: number, y: number): Point {
const viewController: ViewController = this.get('viewController');
return viewController.getCanvasByPoint(x, y);
}
/**
* 获取图内容的中心绘制坐标
* @return {object} 中心绘制坐标
*/
public getGraphCenterPoint(): Point {
const bbox = this.get('group').getCanvasBBox();
return {
x: (bbox.minX + bbox.maxX) / 2,
y: (bbox.minY + bbox.maxY) / 2,
};
}
/**
* 获取视口中心绘制坐标
* @return {object} 视口中心绘制坐标
*/
public getViewPortCenterPoint(): Point {
return this.getPointByCanvas(this.get('width') / 2, this.get('height') / 2);
}
/**
* 显示元素
* @param {Item} item 指定元素
* @param {boolean} stack 本次操作是否入栈,默认为 true
*/
public showItem(item: Item | string, stack: boolean = true): void {
const itemController: ItemController = this.get('itemController');
const object = itemController.changeItemVisibility(item, true);
if (stack && this.get('enabledStack')) {
const id = object.getID();
const type = object.getType();
const before: GraphData = {};
const after: GraphData = {};
switch (type) {
case 'node':
before.nodes = [{ id, visible: false }];
after.nodes = [{ id, visible: true }];
break;
case 'edge':
before.nodes = [{ id, visible: false }];
after.edges = [{ id, visible: true }];
break;
case 'combo':
before.nodes = [{ id, visible: false }];
after.combos = [{ id, visible: true }];
break;
default:
break;
}
this.pushStack('visible', { before, after });
}
}
/**
* 隐藏元素
* @param {Item} item 指定元素
* @param {boolean} stack 本次操作是否入栈,默认为 true
*/
public hideItem(item: Item | string, stack: boolean = true): void {
const itemController: ItemController = this.get('itemController');
const object = itemController.changeItemVisibility(item, false);
if (stack && this.get('enabledStack')) {
const id = object.getID();
const type = object.getType();
const before: GraphData = {};
const after: GraphData = {};
switch (type) {
case 'node':
before.nodes = [{ id, visible: true }];
after.nodes = [{ id, visible: false }];
break;
case 'edge':
before.nodes = [{ id, visible: true }];
after.edges = [{ id, visible: false }];
break;
case 'combo':
before.nodes = [{ id, visible: true }];
after.combos = [{ id, visible: false }];
break;
default:
break;
}
this.pushStack('visible', { before, after });
}
}
/**
* 刷新元素
* @param {string|object} item 元素id或元素实例
*/
public refreshItem(item: Item | string) {
const itemController: ItemController = this.get('itemController');
itemController.refreshItem(item);
}
/**
* 设置是否在更新/刷新后自动重绘
* @param {boolean} auto 自动重绘
*/
public setAutoPaint(auto: boolean): void {
const self = this;
self.set('autoPaint', auto);
const canvas: ICanvas = self.get('canvas');
canvas.set('autoDraw', auto);
}
/**
* 删除元素
* @param {Item} item 元素id或元素实例
* @param {boolean} stack 本次操作是否入栈,默认为 true
*/
public remove(item: Item | string, stack: boolean = true): void {
this.removeItem(item, stack);
}
/**
* 删除元素
* @param {Item} item 元素id或元素实例
* @param {boolean} stack 本次操作是否入栈,默认为 true
*/
public removeItem(item: Item | string, stack: boolean = true): void {
let nodeItem = item;
if (isString(item)) nodeItem = this.findById(item as string);
if (!nodeItem && isString(item)) {
console.warn('The item to be removed does not exist!');
} else if (nodeItem) {
let type = '';
if ((nodeItem as Item).getType) type = (nodeItem as Item).getType();
// 将删除的元素入栈
if (stack && this.get('enabledStack')) {
const deletedModel = {
...(nodeItem as Item).getModel(),
itemType: type,
};
const before: GraphData = {};
switch (type) {
case 'node': {
before.nodes = [deletedModel as NodeConfig];
before.edges = [];
const edges = (nodeItem as INode).getEdges();
for (let i = edges.length - 1; i >= 0; i--) {
before.edges.push({
...edges[i].getModel(),
itemType: 'edge',
});
}
break;
}
case 'edge':
before.edges = [deletedModel as EdgeConfig];
break;
case 'combo':
before.combos = [deletedModel as ComboConfig];
break;
default:
break;
}
this.pushStack('delete', {
before,
after: {},
});
}
if (type === 'node') {
const model = (nodeItem as INode).getModel();
// 如果删除的是节点,且该节点存在于某个 Combo 中,则需要先将 node 从 combo 中移除,否则删除节点后,操作 combo 会出错
if (model.comboId) {
this.updateComboTree(nodeItem as INode);
}
}
const itemController: ItemController = this.get('itemController');
itemController.removeItem(nodeItem);
if (type === 'combo') {
const newComboTrees = reconstructTree(this.get('comboTrees'));
this.set('comboTrees', newComboTrees);
}
}
}
/**
* 新增元素
* @param {ITEM_TYPE} type 元素类型(node | edge)
* @param {ModelConfig} model 元素数据模型
* @param {boolean} stack 本次操作是否入栈,默认为 true
* @param {boolean} sortCombo 本次操作是否需要更新 combo 层级顺序,内部参数,用户在外部使用 addItem 时始终时需要更新
* @return {Item} 元素实例
*/
public addItem(
type: ITEM_TYPE,
model: ModelConfig,
stack: boolean = true,
sortCombo: boolean = true,
) {
const currentComboSorted = this.get('comboSorted');
this.set('comboSorted', currentComboSorted && !sortCombo);
const itemController: ItemController = this.get('itemController');
// 添加节点、边或combo之前,先验证数据是否符合规范
if (!singleDataValidation(type, model)) {
return false;
}
if (model.id && this.findById(model.id as string)) {
console.warn(
`This item exists already. Be sure the id %c${model.id}%c is unique.`,
'font-size: 20px; color: red;',
'',
);
return;
}
let item;
let comboTrees = this.get('comboTrees');
if (!comboTrees) comboTrees = [];
if (type === 'combo') {
const itemMap = this.get('itemMap');
let foundParent = false;
comboTrees.forEach((ctree: ComboTree) => {