@maxgraph/core
Version:
maxGraph is a fully client side JavaScript diagramming library that uses SVG and HTML for rendering.
53 lines (49 loc) • 1.9 kB
JavaScript
/*
Copyright 2024-present The maxGraph project Contributors
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.
*/
import ObjectCodec from '../../ObjectCodec.js';
import Geometry from '../../../view/geometry/Geometry.js';
import Point from '../../../view/geometry/Point.js';
/**
* Add support for the legacy `mxGraph` format of {@link Geometry}.
*
* @category Serialization with Codecs
*/
export class mxGeometryCodec extends ObjectCodec {
getName() {
return 'mxGeometry';
}
constructor() {
super(new Geometry());
}
afterDecode(dec, node, obj) {
// Convert points to the right form
// input: [ { x: 420, y: 60 }, ... ]
// output: [ Point { _x: 420, _y: 60 }, ... ]
//
// In mxGraph XML, the points are modeled as Object, so there is no way to create an alias to do the decoding with a custom Codec.
// Then, it is easier to convert the values to Point objects after the whole decoding of the geometry
// <Array as="points">
// <Object x="420" y="60"/>
// </Array>
const originalPoints = obj.points;
if (originalPoints) {
const points = [];
for (const pointInput of originalPoints) {
const rawPoint = pointInput;
points.push(new Point(rawPoint.x, rawPoint.y));
}
obj.points = points;
}
return obj;
}
}