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 custom {@link Link} class customizes its {@link Shape} to surround the comment node (the from node).
* If the Shape is filled, it will obscure the comment itself unless the Link is behind the comment node.
* Thus the default layer for BalloonLinks is "Background".
*
* If you want to experiment with this extension, try the <a href="../../extensionsTS/BalloonLink.html">Balloon Links</a> sample.
* @category Part Extension
*/
var BalloonLink = /** @class */ (function (_super) {
__extends(BalloonLink, _super);
/**
* Constructs a BalloonLink and sets the {@link Part#layerName} property to "Background".
*/
function BalloonLink() {
var _this = _super.call(this) || this;
_this._base = 10;
_this.layerName = 'Background';
return _this;
}
/**
* Copies properties to a cloned BalloonLink.
*/
BalloonLink.prototype.cloneProtected = function (copy) {
_super.prototype.cloneProtected.call(this, copy);
copy._base = this._base;
};
Object.defineProperty(BalloonLink.prototype, "base", {
/**
* Gets or sets width of the base of the triangle at the center point of the {@link Link#fromNode}.
*
* The default value is 10.
*/
get: function () { return this._base; },
set: function (value) { this._base = value; },
enumerable: true,
configurable: true
});
/**
* Produce a Geometry from the Link's route that draws a "balloon" shape around the {@link Link#fromNode}
* and has a triangular shape with the base at the fromNode and the top at the toNode.
*/
BalloonLink.prototype.makeGeometry = function () {
var fromnode = this.fromNode;
var tonode = this.toNode;
if (fromnode === null || tonode === null)
return _super.prototype.makeGeometry.call(this);
// assume the fromNode is the comment and the toNode is the commented-upon node
var bb = fromnode.actualBounds;
var nb = tonode.actualBounds;
var p0 = bb.center;
var pn = this.getPoint(this.pointsCount - 1);
if (bb.intersectsRect(nb)) {
pn = nb.center;
}
var pos = this.routeBounds;
// compute the intersection points for the triangular arrow
var ang = pn.directionPoint(p0);
var L = new go.Point(this.base, 0).rotate(ang - 90).add(p0);
var R = new go.Point(this.base, 0).rotate(ang + 90).add(p0);
this.getLinkPointFromPoint(fromnode, fromnode, L, pn, true, L);
this.getLinkPointFromPoint(fromnode, fromnode, R, pn, true, R);
// form a triangular arrow from the comment to the commented node
var fig = new go.PathFigure(pn.x - pos.x, pn.y - pos.y, true); // filled; start at arrow point at commented node
fig.add(new go.PathSegment(go.PathSegment.Line, R.x - pos.x, R.y - pos.y)); // a triangle base point on comment's edge
var side = 0;
if (L.y >= bb.bottom || R.y >= bb.bottom)
side = 2;
else if (L.x <= bb.x && R.x <= bb.x)
side = 1;
else if (L.x >= bb.right && R.x >= bb.right)
side = 3;
this.pathToCorner(side, bb, fig, pos, L, R);
this.pathToCorner(side + 1, bb, fig, pos, L, R);
this.pathToCorner(side + 2, bb, fig, pos, L, R);
this.pathToCorner(side + 3, bb, fig, pos, L, R);
fig.add(new go.PathSegment(go.PathSegment.Line, L.x - pos.x, L.y - pos.y).close()); // the other triangle base point on comment's edge
// return a Geometry
return new go.Geometry().add(fig);
};
/**
* Draw a line to a corner, but not if the comment arrow encompasses that corner.
*/
BalloonLink.prototype.pathToCorner = function (side, bb, fig, pos, L, R) {
switch (side % 4) {
case 0:
if (!(L.y <= bb.y && R.x <= bb.x))
fig.add(new go.PathSegment(go.PathSegment.Line, bb.x - pos.x, bb.y - pos.y));
break;
case 1:
if (!(L.x <= bb.x && R.y >= bb.bottom))
fig.add(new go.PathSegment(go.PathSegment.Line, bb.x - pos.x, bb.bottom - pos.y));
break;
case 2:
if (!(L.y >= bb.bottom && R.x >= bb.right))
fig.add(new go.PathSegment(go.PathSegment.Line, bb.right - pos.x, bb.bottom - pos.y));
break;
case 3:
if (!(L.x >= bb.right && R.y <= bb.y))
fig.add(new go.PathSegment(go.PathSegment.Line, bb.right - pos.x, bb.y - pos.y));
break;
}
};
return BalloonLink;
}(go.Link));
exports.BalloonLink = BalloonLink;
});