| /* |
| * Copyright 2016-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. |
| */ |
| |
| /* |
| ONOS GUI -- Topology Node Position Module. |
| Module that helps position nodes in the topology |
| */ |
| |
| (function () { |
| 'use strict'; |
| |
| // Injected vars |
| var rs, t2mcs, t2sls, t2bgs; |
| |
| // Internal state; |
| var nearDist = 15; |
| |
| function setElCoord(el, coord) { |
| el.fix(true); |
| el.x = el.px = coord[0]; |
| el.y = el.py = coord[1]; |
| return true; |
| } |
| |
| function positionNode(node, forUpdate) { |
| |
| var meta = node.get('metaUi'), |
| x = meta && meta.x, |
| y = meta && meta.y, |
| hasMeta = x !== undefined && y !== undefined, |
| dim = [800, 600], |
| xy; |
| |
| // If the node has metaUI data attached, it indicates that the user |
| // has dragged the node to a new position on the view; so we should |
| // respect that above any script-configured position... |
| // (NOTE: This is slightly different to the "classic" topology code) |
| |
| if (hasMeta) { |
| node.fix(true); |
| node.px = node.x = x; |
| node.py = node.y = y; |
| return; |
| } |
| |
| // Otherwise, use a precomputed location for peer regions, or |
| // LONG/LAT (or GRID) locations for regions/devices/hosts |
| |
| if (node.nodeType === 'peer-region') { |
| if (t2bgs.getBackgroundType() === 'geo') { |
| setLongLat(node); |
| return true; |
| } |
| |
| // assumed to be grid |
| var loc = node.get('location'); |
| |
| // fallback to default placement if not defined. |
| if (!loc.latOrY && !loc.longOrX) { |
| loc = { |
| longOrX: -20, |
| latOrY: 10 * node.index(), |
| }; |
| } |
| |
| setElCoord(node, coordFromXY(loc)); |
| return; |
| } |
| |
| // If the device contains explicit LONG/LAT data, use that to position |
| if (setLongLat(node)) { |
| // Indicate we want to update cached meta data... |
| return true; |
| } |
| |
| // if this is a node update (not a node add).. skip randomizer |
| if (forUpdate) { |
| return; |
| } |
| |
| // Note: Placing incoming unpinned nodes at exactly the same point |
| // (center of the view) causes them to explode outwards when |
| // the force layout kicks in. So, we spread them out a bit |
| // initially, to provide a more serene layout convergence. |
| // Additionally, if the node is a host, we place it near |
| // the device it is connected to. |
| |
| function rand() { |
| return { |
| x: rs.randDim(dim[0]), |
| y: rs.randDim(dim[1]), |
| }; |
| } |
| |
| function near(node) { |
| return { |
| x: node.x + nearDist + rs.spread(nearDist), |
| y: node.y + nearDist + rs.spread(nearDist), |
| }; |
| } |
| |
| function getDevice(cp) { |
| return rand(); |
| } |
| |
| xy = (node.class === 'host') ? near(getDevice(node.cp)) : rand(); |
| |
| if (node.class === 'sub-region') { |
| xy = rand(); |
| node.x = node.px = xy.x; |
| node.y = node.py = xy.y; |
| } |
| angular.extend(node, xy); |
| } |
| |
| function setLongLat(el) { |
| var loc = el.get('location'); |
| |
| // bail if no location set |
| if (!loc || (loc.latOrY === 0 && loc.longOrX === 0)) { |
| return false; |
| } |
| |
| if (loc.locType === 'geo') { |
| return setElCoord(el, coordFromLngLat(loc)); |
| } |
| if (loc.locType === 'grid') { |
| return setElCoord(el, coordFromXY(loc)); |
| } |
| |
| return false; |
| } |
| |
| function coordFromLngLat(loc) { |
| var p = t2mcs.projection(); |
| return p ? p([loc.longOrX, loc.latOrY]) : [0, 0]; |
| } |
| |
| function coordFromXY(loc) { |
| var bgWidth = t2sls.getWidth() || 100, |
| bgHeight = t2sls.getHeight() || 100; |
| |
| var scale = 1000 / bgWidth, |
| yOffset = (1000 - (bgHeight * scale)) / 2; |
| |
| // 1000 is a hardcoded HTML value of the SVG element (topo2.html) |
| var x = scale * loc.longOrX, |
| y = (scale * loc.latOrY) + yOffset; |
| |
| return [x, y]; |
| } |
| |
| angular.module('ovTopo2') |
| .factory('Topo2NodePositionService', |
| ['RandomService', 'Topo2MapConfigService', |
| 'Topo2SpriteLayerService', 'Topo2BackgroundService', |
| function (_rs_, _t2mcs_, _t2sls_, _t2bgs_) { |
| |
| rs = _rs_; |
| t2mcs = _t2mcs_; |
| t2sls = _t2sls_; |
| t2bgs = _t2bgs_; |
| |
| return { |
| positionNode: positionNode, |
| setLongLat: setLongLat, |
| }; |
| }, |
| ]); |
| })(); |