mirror of
https://bitbucket.org/wisemapping/wisemapping-frontend.git
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99 lines
3.0 KiB
JavaScript
99 lines
3.0 KiB
JavaScript
/*
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* Copyright [2015] [wisemapping]
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*
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* Licensed under WiseMapping Public License, Version 1.0 (the "License").
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* It is basically the Apache License, Version 2.0 (the "License") plus the
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* "powered by wisemapping" text requirement on every single page;
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the license at
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*
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* http://www.wisemapping.org/license
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const ElementPeer = require('./ElementPeer').default;
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const ArrowPeer = new Class({
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Extends: ElementPeer,
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initialize() {
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const svgElement = window.document.createElementNS(this.svgNamespace, 'path');
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this.parent(svgElement);
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this._style = {};
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this._controlPoint = new core.Point();
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this._fromPoint = new core.Point();
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},
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setFrom(x, y) {
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this._fromPoint.x = x;
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this._fromPoint.y = y;
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this._redraw();
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},
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setControlPoint(point) {
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this._controlPoint = point;
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this._redraw();
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},
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setStrokeColor(color) {
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this.setStroke(null, null, color, null);
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},
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setStrokeWidth(width) {
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this.setStroke(width);
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},
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setDashed(isDashed, length, spacing) {
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if ($defined(isDashed) && isDashed && $defined(length) && $defined(spacing)) {
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this._native.setAttribute('stroke-dasharray', `${length},${spacing}`);
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} else {
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this._native.setAttribute('stroke-dasharray', '');
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}
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},
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_updateStyle() {
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let style = '';
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for (const key in this._style) {
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style += `${key}:${this._style[key]} `;
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}
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this._native.setAttribute('style', style);
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},
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_redraw() {
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let x; let y; let xp; let
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yp;
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if ($defined(this._fromPoint.x) && $defined(this._fromPoint.y) && $defined(this._controlPoint.x) && $defined(this._controlPoint.y)) {
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if (this._controlPoint.y == 0) this._controlPoint.y = 1;
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const y0 = this._controlPoint.y;
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const x0 = this._controlPoint.x;
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const x2 = x0 + y0;
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const y2 = y0 - x0;
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const x3 = x0 - y0;
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const y3 = y0 + x0;
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const m = y2 / x2;
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const mp = y3 / x3;
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const l = 6;
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const { pow } = Math;
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x = (x2 == 0 ? 0 : Math.sqrt(pow(l, 2) / (1 + pow(m, 2))));
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x *= Math.sign(x2);
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y = (x2 == 0 ? l * Math.sign(y2) : m * x);
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xp = (x3 == 0 ? 0 : Math.sqrt(pow(l, 2) / (1 + pow(mp, 2))));
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xp *= Math.sign(x3);
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yp = (x3 == 0 ? l * Math.sign(y3) : mp * xp);
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const path = `M${this._fromPoint.x},${this._fromPoint.y} `
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+ `L${x + this._fromPoint.x},${y + this._fromPoint.y
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}M${this._fromPoint.x},${this._fromPoint.y} `
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+ `L${xp + this._fromPoint.x},${yp + this._fromPoint.y}`;
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this._native.setAttribute('d', path);
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}
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},
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});
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export default ArrowPeer;
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