gojs
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Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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JavaScript
/*
* Copyright (C) 1998-2020 by Northwoods Software Corporation. All Rights Reserved.
*/
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
return extendStatics(d, b);
};
return function (d, b) {
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
(function (factory) {
if (typeof module === "object" && typeof module.exports === "object") {
var v = factory(require, exports);
if (v !== undefined) module.exports = v;
}
else if (typeof define === "function" && define.amd) {
define(["require", "exports", "../release/go.js"], factory);
}
})(function (require, exports) {
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
/*
* This is an extension and not part of the main GoJS library.
* Note that the API for this class may change with any version, even point releases.
* If you intend to use an extension in production, you should copy the code to your own source directory.
* Extensions can be found in the GoJS kit under the extensions or extensionsTS folders.
* See the Extensions intro page (https://gojs.net/latest/intro/extensions.html) for more information.
*/
var go = require("../release/go.js");
/**
* This CurvedLinkReshapingTool class allows for a {@link Link}'s path to be modified by the user
* via the dragging of a single tool handle at the middle of the link.
* Dragging the handle changes the value of {@link Link#curviness}.
*
* If you want to experiment with this extension, try the <a href="../../extensionsTS/CurvedLinkReshaping.html">Curved Link Reshaping</a> sample.
* @category Tool Extension
*/
var CurvedLinkReshapingTool = /** @class */ (function (_super) {
__extends(CurvedLinkReshapingTool, _super);
function CurvedLinkReshapingTool() {
var _this = _super !== null && _super.apply(this, arguments) || this;
_this._originalCurviness = NaN;
return _this;
}
/**
* @hidden @internal
*/
CurvedLinkReshapingTool.prototype.makeAdornment = function (pathshape) {
var link = pathshape.part;
if (link !== null && link.curve === go.Link.Bezier && link.pointsCount === 4) {
var adornment = new go.Adornment();
adornment.type = go.Panel.Link;
var h = this.makeHandle(pathshape, 0);
this.setReshapingBehavior(h, go.LinkReshapingTool.All);
h.cursor = 'move';
adornment.add(h);
adornment.category = this.name;
adornment.adornedObject = pathshape;
return adornment;
}
else {
return _super.prototype.makeAdornment.call(this, pathshape);
}
};
/**
* Start reshaping, if {@link #findToolHandleAt} finds a reshape handle at the mouse down point.
*
* If successful this sets {@link #handle} to be the reshape handle that it finds
* and {@link #adornedLink} to be the {@link Link} being routed.
* It also remembers the original link route (a list of Points) and curviness in case this tool is cancelled.
* And it starts a transaction.
*/
CurvedLinkReshapingTool.prototype.doActivate = function () {
_super.prototype.doActivate.call(this);
if (this.adornedLink !== null)
this._originalCurviness = this.adornedLink.curviness;
};
/**
* Restore the link route to be the original points and curviness and stop this tool.
*/
CurvedLinkReshapingTool.prototype.doCancel = function () {
if (this.adornedLink !== null)
this.adornedLink.curviness = this._originalCurviness;
_super.prototype.doCancel.call(this);
};
/**
* Change the route of the {@link #adornedLink} by moving the point corresponding to the current
* {@link #handle} to be at the given {@link Point}.
* This is called by {@link #doMouseMove} and {@link #doMouseUp} with the result of calling
* {@link #computeReshape} to constrain the input point.
* @param {Point} newpt the value of the call to {@link #computeReshape}.
*/
CurvedLinkReshapingTool.prototype.reshape = function (newpt) {
var link = this.adornedLink;
if (link !== null && link.curve === go.Link.Bezier && link.pointsCount === 4) {
var start = link.getPoint(0);
var end = link.getPoint(3);
var ang = start.directionPoint(end);
var mid = new go.Point((start.x + end.x) / 2, (start.y + end.y) / 2);
var a = new go.Point(9999, 0).rotate(ang + 90).add(mid);
var b = new go.Point(9999, 0).rotate(ang - 90).add(mid);
var q = newpt.copy().projectOntoLineSegmentPoint(a, b);
var curviness = Math.sqrt(mid.distanceSquaredPoint(q));
var port = link.fromPort;
if (port === link.toPort && port !== null) {
if (newpt.y < port.getDocumentPoint(go.Spot.Center).y)
curviness = -curviness;
}
else {
var diff = mid.directionPoint(q) - ang;
if ((diff > 0 && diff < 180) || (diff < -180))
curviness = -curviness;
}
link.curviness = curviness;
}
else {
_super.prototype.reshape.call(this, newpt);
}
};
return CurvedLinkReshapingTool;
}(go.LinkReshapingTool));
exports.CurvedLinkReshapingTool = CurvedLinkReshapingTool;
});