238 lines
5.8 KiB
JavaScript
238 lines
5.8 KiB
JavaScript
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G6.registerNode('link-Queue-head', {
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draw(cfg, group) {
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cfg.size = cfg.size || [30, 10];
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const width = cfg.size[0],
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height = cfg.size[1];
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const wrapperRect = group.addShape('rect', {
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attrs: {
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x: width / 2,
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y: height / 2,
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width: width,
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height: height,
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stroke: cfg.style.stroke,
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fill: 'transparent'
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},
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name: 'wrapper'
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});
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group.addShape('rect', {
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attrs: {
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x: width / 2,
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y: height / 2,
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width: width,
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height: height / 2,
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fill: cfg.style.fill,
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stroke: cfg.style.stroke
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},
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name: 'top-rect'
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});
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group.addShape('rect', {
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attrs: {
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x: width / 2,
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y: height,
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width: width,
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height: height / 2,
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fill: cfg.style.fill,
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stroke: cfg.style.stroke
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},
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name: 'bottom-rect'
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});
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group.addShape('text', {
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attrs: {
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x: width,
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y: height * (3 / 4),
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textAlign: 'center',
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textBaseline: 'middle',
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text: 'front',
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fill: '#000',
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fontSize: 16
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},
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name: 'front'
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});
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group.addShape('text', {
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attrs: {
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x: width,
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y: height * (5 / 4),
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textAlign: 'center',
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textBaseline: 'middle',
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text: 'rear',
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fill: '#000',
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fontSize: 16
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},
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name: 'rear'
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});
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return wrapperRect;
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},
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getAnchorPoints() {
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return [
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[1, 0.25],
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[1, 0.75]
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];
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}
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});
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class LinkQueue extends Engine {
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defineOptions() {
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return {
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element: {
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head: {
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type: 'link-Queue-head',
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label: '[id]',
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size: [60, 80],
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style: {
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stroke: '#333',
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fill: '#b83b5e'
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}
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},
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node: {
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type: 'link-list-node',
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label: '[id]',
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size: [60, 30],
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style: {
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stroke: '#333',
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fill: '#b83b5e'
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}
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}
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},
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link: {
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front: {
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type: 'line',
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sourceAnchor: 0,
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targetAnchor: 0,
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style: {
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stroke: '#333',
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endArrow: {
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path: G6.Arrow.triangle(8, 6, 0),
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fill: '#333'
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}
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}
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},
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rear: {
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type: 'polyline',
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sourceAnchor: 1,
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targetAnchor: 3,
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style: {
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stroke: '#333',
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endArrow: {
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path: G6.Arrow.triangle(8, 6, 0),
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fill: '#333'
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}
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}
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},
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next: {
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type: 'line',
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sourceAnchor: 1,
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targetAnchor: 0,
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style: {
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stroke: '#333',
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endArrow: {
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path: G6.Arrow.triangle(8, 6, 0),
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fill: '#333'
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},
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startArrow: {
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path: G6.Arrow.circle(2, -1),
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fill: '#333'
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}
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}
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}
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},
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pointer: {
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external: {
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offset: 8,
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style: {
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fill: '#f08a5d'
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}
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}
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},
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layout: {
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xInterval: 50,
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yInterval: 50
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}
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};
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}
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/**
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* 对子树进行递归布局
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* @param node
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* @param parent
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*/
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layoutItem(node, prev, layoutOptions) {
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if(!node) {
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return null;
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}
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let width = node.get('size')[0];
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if(prev) {
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node.set('y', prev.get('y'));
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node.set('x', prev.get('x') + layoutOptions.xInterval + width);
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}
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if(node.next) {
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this.layoutItem(node.next, node, layoutOptions);
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}
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}
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layout(elements, layoutOptions) {
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let head = elements.head[0];
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if(head.front) {
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let d = head.get('size')[1] / 2 - head.front.get('size')[1],
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x = layoutOptions.xInterval * 2.5,
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y = head.front.get('size')[1] / 2 + 1.5 * d;
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head.front.set({ x, y });
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}
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if(head.front.next) {
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this.layoutItem(head.front.next, head.front, layoutOptions);
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}
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}
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}
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const LQueue = function(container) {
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return{
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engine: new LinkQueue(container),
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data: [{
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head: [{
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type: "QPtr",
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id: 44,
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front: 'node#1',
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rear: 'node#13'
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}],
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node: [
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{
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id: 1,
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next: 12,
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root: true
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},
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{
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id: 12,
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next: 13
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},
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{
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id: 13,
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next: null
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}
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]
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}]
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}
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};
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