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| 1 | +/** |
| 2 | +* @license Apache-2.0 |
| 3 | +* |
| 4 | +* Copyright (c) 2018 The Stdlib Authors. |
| 5 | +* |
| 6 | +* Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | +* you may not use this file except in compliance with the License. |
| 8 | +* You may obtain a copy of the License at |
| 9 | +* |
| 10 | +* http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | +* |
| 12 | +* Unless required by applicable law or agreed to in writing, software |
| 13 | +* distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | +* See the License for the specific language governing permissions and |
| 16 | +* limitations under the License. |
| 17 | +*/ |
| 18 | + |
| 19 | +'use strict'; |
| 20 | + |
| 21 | +// MODULES // |
| 22 | + |
| 23 | +var logger = require( 'debug' ); |
| 24 | +var vdom2html = require( 'vdom-to-html' ); |
| 25 | +var renderSVG = require( './svg' ); |
| 26 | + |
| 27 | + |
| 28 | +// VARIABLES // |
| 29 | + |
| 30 | +var debug = logger( 'hist:render' ); |
| 31 | + |
| 32 | + |
| 33 | +// MAIN // |
| 34 | + |
| 35 | +/** |
| 36 | +* Renders a histogram. |
| 37 | +* |
| 38 | +* @private |
| 39 | +* @param {string} format - render format |
| 40 | +* @returns {(VTree|string)} virtual tree or a string |
| 41 | +*/ |
| 42 | +function render( format ) { |
| 43 | + /* eslint-disable no-invalid-this, no-underscore-dangle */ |
| 44 | + var out; |
| 45 | + |
| 46 | + debug( 'Render format: %s.', format ); |
| 47 | + |
| 48 | + debug( 'Rendering...' ); |
| 49 | + if ( this._engine === 'svg' ) { |
| 50 | + out = renderSVG( this ); |
| 51 | + |
| 52 | + // Default render format is virtual DOM... |
| 53 | + if ( format === 'html' ) { |
| 54 | + out = vdom2html( out ); |
| 55 | + } |
| 56 | + this.emit( 'render', out ); |
| 57 | + } |
| 58 | + return out; |
| 59 | +} |
| 60 | + |
| 61 | + |
| 62 | +// EXPORTS // |
| 63 | + |
| 64 | +module.exports = render; |
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