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https://github.com/nasa/openmct.git
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605eeff9d7
* Remove Lecacy plot code * Adds tests for plots inspector * Set range max and min to undefined instead of 0
103 lines
3.1 KiB
JavaScript
103 lines
3.1 KiB
JavaScript
/*****************************************************************************
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* Open MCT, Copyright (c) 2014-2021, United States Government
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* as represented by the Administrator of the National Aeronautics and Space
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* Administration. All rights reserved.
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*
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* Open MCT is licensed under the Apache License, Version 2.0 (the
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* "License"); 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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* http://www.apache.org/licenses/LICENSE-2.0.
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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, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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* Open MCT includes source code licensed under additional open source
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* licenses. See the Open Source Licenses file (LICENSES.md) included with
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* this source code distribution or the Licensing information page available
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* at runtime from the About dialog for additional information.
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*****************************************************************************/
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import DrawWebGL from './DrawWebGL';
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import Draw2D from './Draw2D';
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const CHARTS = [
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{
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MAX_INSTANCES: 16,
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API: DrawWebGL,
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ALLOCATIONS: []
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},
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{
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MAX_INSTANCES: Number.POSITIVE_INFINITY,
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API: Draw2D,
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ALLOCATIONS: []
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}
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];
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/**
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* Draw loader attaches a draw API to a canvas element and returns the
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* draw API.
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*/
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export const DrawLoader = {
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/**
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* Return the first draw API available. Returns
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* `undefined` if a draw API could not be constructed.
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*.
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* @param {CanvasElement} canvas - The canvas eelement to attach
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the draw API to.
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*/
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getDrawAPI: function (canvas, overlay) {
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let api;
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CHARTS.forEach(function (CHART_TYPE) {
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if (api) {
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return;
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}
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if (CHART_TYPE.ALLOCATIONS.length
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>= CHART_TYPE.MAX_INSTANCES) {
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return;
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}
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try {
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api = new CHART_TYPE.API(canvas, overlay);
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CHART_TYPE.ALLOCATIONS.push(api);
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} catch (e) {
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console.warn([
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"Could not instantiate chart",
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CHART_TYPE.API.name,
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";",
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e.message
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].join(" "));
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}
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});
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if (!api) {
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console.warn("Cannot initialize mct-chart.");
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}
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return api;
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},
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/**
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* Returns a fallback draw api.
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*/
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getFallbackDrawAPI: function (canvas, overlay) {
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const api = new CHARTS[1].API(canvas, overlay);
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CHARTS[1].ALLOCATIONS.push(api);
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return api;
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},
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releaseDrawAPI: function (api) {
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CHARTS.forEach(function (CHART_TYPE) {
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if (api instanceof CHART_TYPE.API) {
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CHART_TYPE.ALLOCATIONS.splice(CHART_TYPE.ALLOCATIONS.indexOf(api), 1);
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}
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});
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if (api.destroy) {
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api.destroy();
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}
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}
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};
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