| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the 'License'); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an 'AS IS' BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| import { |
| ChangeDetectorRef, |
| Component, EventEmitter, |
| Input, OnChanges, Output, SimpleChanges, |
| } from '@angular/core'; |
| import {Link, LinkHighlight, UiElement} from '../../models'; |
| import {LogService} from 'org_onosproject_onos/web/gui2-fw-lib/public_api'; |
| import {NodeVisual, SelectedEvent} from '../nodevisual'; |
| import {animate, state, style, transition, trigger} from '@angular/animations'; |
| |
| interface Point { |
| x: number; |
| y: number; |
| } |
| |
| /* |
| * LinkSvgComponent gets its data from 2 sources - the force SVG regionData (which |
| * gives the Link below), and other state data here. |
| */ |
| @Component({ |
| selector: '[onos-linksvg]', |
| templateUrl: './linksvg.component.html', |
| styleUrls: ['./linksvg.component.css'], |
| animations: [ |
| trigger('linkLabelVisible', [ |
| state('true', style( { |
| opacity: 1.0, |
| })), |
| state( 'false', style({ |
| opacity: 0 |
| })), |
| transition('false => true', animate('500ms ease-in')), |
| transition('true => false', animate('1000ms ease-out')) |
| ]) |
| ] |
| }) |
| export class LinkSvgComponent extends NodeVisual implements OnChanges { |
| @Input() link: Link; |
| @Input() linkHighlight: LinkHighlight; |
| @Input() highlightsEnabled: boolean = true; |
| @Input() scale = 1.0; |
| isHighlighted: boolean = false; |
| @Output() selectedEvent = new EventEmitter<SelectedEvent>(); |
| @Output() enhancedEvent = new EventEmitter<Link>(); |
| enhanced: boolean = false; |
| labelPosSrc: Point = {x: 0, y: 0}; |
| labelPosTgt: Point = {x: 0, y: 0}; |
| lastTimer: any; |
| |
| constructor( |
| protected log: LogService, |
| private ref: ChangeDetectorRef |
| ) { |
| super(); |
| } |
| |
| ngOnChanges(changes: SimpleChanges) { |
| if (changes['linkHighlight']) { |
| const hl: LinkHighlight = changes['linkHighlight'].currentValue; |
| if (hl === undefined) { |
| return; |
| } |
| clearTimeout(this.lastTimer); |
| this.isHighlighted = true; |
| this.log.debug('Link highlighted', this.link.id); |
| |
| if (hl.fadems > 0) { |
| this.lastTimer = setTimeout(() => { |
| this.isHighlighted = false; |
| this.linkHighlight = <LinkHighlight>{}; |
| this.ref.markForCheck(); |
| }, this.linkHighlight.fadems); // Disappear slightly before next one comes in |
| } |
| } |
| |
| this.ref.markForCheck(); |
| } |
| |
| highlightAsString(): string { |
| if (this.linkHighlight && this.linkHighlight.css) { |
| return this.linkHighlight.css; |
| } |
| return ''; |
| } |
| |
| enhance() { |
| if (!this.highlightsEnabled) { |
| return; |
| } |
| this.enhancedEvent.emit(this.link); |
| this.enhanced = true; |
| this.repositionLabels(); |
| setTimeout(() => { |
| this.enhanced = false; |
| this.ref.markForCheck(); |
| }, 1000); |
| } |
| |
| /** |
| * We want to place the label for the port about 40 px from the node. |
| * If the distance between the nodes is less than 100, then just place the |
| * label 1/3 of the way from the node |
| */ |
| repositionLabels(): void { |
| const x1: number = this.link.source.x; |
| const y1: number = this.link.source.y; |
| const x2: number = this.link.target.x; |
| const y2: number = this.link.target.y; |
| |
| const dist = Math.sqrt(Math.pow((x2 - x1), 2) + Math.pow((y2 - y1), 2)); |
| const offset = dist > 100 ? 40 : dist / 3; |
| this.labelPosSrc = <Point>{ |
| x: x1 + (x2 - x1) * offset / dist, |
| y: y1 + (y2 - y1) * offset / dist |
| }; |
| |
| this.labelPosTgt = <Point>{ |
| x: x2 - (x2 - x1) * offset / dist, |
| y: y2 - (y2 - y1) * offset / dist |
| }; |
| } |
| |
| /** |
| * For the 14pt font we are using, the average width seems to be about 8px |
| * @param text The string we want to calculate a width for |
| */ |
| textLength(text: string) { |
| return text.length * 8; |
| } |
| } |