Sean Condon | f4f54a1 | 2018-10-10 23:25:46 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2018-present Open Networking Foundation |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the 'License'); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an 'AS IS' BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | import { Component, OnInit } from '@angular/core'; |
| 17 | import { |
| 18 | FnService, |
| 19 | LogService, |
| 20 | ZoomService, Zoomer, ZoomOpts |
| 21 | } from 'gui2-fw-lib'; |
| 22 | |
| 23 | /** |
| 24 | * ONOS GUI -- Topology Zoom Layer View. |
| 25 | * View that contains the 'Force graph' message |
| 26 | * |
| 27 | * This component is an SVG snippet that expects to be in an SVG element with a view box of 1000x1000 |
| 28 | * |
| 29 | * It should be added to a template with a tag like <svg:g onos-zoomlayer /> |
| 30 | */ |
| 31 | @Component({ |
| 32 | selector: '[onos-zoomlayer]', |
| 33 | templateUrl: './zoomlayersvg.component.html', |
| 34 | styleUrls: ['./zoomlayersvg.component.css'] |
| 35 | }) |
| 36 | export class ZoomLayerSvgComponent implements OnInit { |
| 37 | zoomer: Zoomer; |
| 38 | zoomEventListeners: any[]; |
| 39 | |
| 40 | constructor( |
| 41 | protected fs: FnService, |
| 42 | protected log: LogService, |
| 43 | protected zs: ZoomService |
| 44 | ) { |
| 45 | this.log.debug('ZoomLayerSvgComponent constructed'); |
| 46 | } |
| 47 | |
| 48 | ngOnInit() { |
| 49 | |
| 50 | } |
| 51 | |
| 52 | createZoomer(options: ZoomOpts) { |
| 53 | // need to wrap the original zoom callback to extend its behavior |
| 54 | const origCallback = this.fs.isF(options.zoomCallback) ? options.zoomCallback : () => {}; |
| 55 | |
| 56 | options.zoomCallback = () => { |
| 57 | origCallback([0, 0], 1); |
| 58 | |
| 59 | this.zoomEventListeners.forEach((ev) => ev(this.zoomer)); |
| 60 | }; |
| 61 | |
| 62 | this.zoomer = this.zs.createZoomer(options); |
| 63 | return this.zoomer; |
| 64 | } |
| 65 | |
| 66 | getZoomer() { |
| 67 | return this.zoomer; |
| 68 | } |
| 69 | |
| 70 | findZoomEventListener(ev) { |
| 71 | for (let i = 0, len = this.zoomEventListeners.length; i < len; i++) { |
| 72 | if (this.zoomEventListeners[i] === ev) { |
| 73 | return i; |
| 74 | } |
| 75 | } |
| 76 | return -1; |
| 77 | } |
| 78 | |
| 79 | addZoomEventListener(callback) { |
| 80 | this.zoomEventListeners.push(callback); |
| 81 | } |
| 82 | |
| 83 | removeZoomEventListener(callback) { |
| 84 | const evIndex = this.findZoomEventListener(callback); |
| 85 | |
| 86 | if (evIndex !== -1) { |
| 87 | this.zoomEventListeners.splice(evIndex); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | adjustmentScale(min: number, max: number): number { |
| 92 | let _scale = 1; |
| 93 | const size = (min + max) / 2; |
| 94 | |
| 95 | if (size * this.scale() < max) { |
| 96 | _scale = min / (size * this.scale()); |
| 97 | } else if (size * this.scale() > max) { |
| 98 | _scale = min / (size * this.scale()); |
| 99 | } |
| 100 | |
| 101 | return _scale; |
| 102 | } |
| 103 | |
| 104 | scale(): number { |
| 105 | return this.zoomer.scale(); |
| 106 | } |
| 107 | |
| 108 | panAndZoom(translate: number[], scale: number, transition?: number) { |
| 109 | this.zoomer.panZoom(translate, scale, transition); |
| 110 | } |
| 111 | |
| 112 | } |