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85 lines
2.3 KiB
85 lines
2.3 KiB
4 years ago
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const Canvas = require('./lib/canvas')
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const Image = require('./lib/image')
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const CanvasRenderingContext2D = require('./lib/context2d')
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const parseFont = require('./lib/parse-font')
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const packageJson = require('./package.json')
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const bindings = require('./lib/bindings')
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const fs = require('fs')
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const PNGStream = require('./lib/pngstream')
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const PDFStream = require('./lib/pdfstream')
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const JPEGStream = require('./lib/jpegstream')
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const DOMMatrix = require('./lib/DOMMatrix').DOMMatrix
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const DOMPoint = require('./lib/DOMMatrix').DOMPoint
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function createCanvas (width, height, type) {
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return new Canvas(width, height, type)
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}
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function createImageData (array, width, height) {
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return new bindings.ImageData(array, width, height)
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}
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function loadImage (src) {
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return new Promise((resolve, reject) => {
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const image = new Image()
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function cleanup () {
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image.onload = null
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image.onerror = null
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}
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image.onload = () => { cleanup(); resolve(image) }
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image.onerror = (err) => { cleanup(); reject(err) }
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image.src = src
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})
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}
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/**
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* Resolve paths for registerFont. Must be called *before* creating a Canvas
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* instance.
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* @param src {string} Path to font file.
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* @param fontFace {{family: string, weight?: string, style?: string}} Object
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* specifying font information. `weight` and `style` default to `"normal"`.
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*/
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function registerFont (src, fontFace) {
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// TODO this doesn't need to be on Canvas; it should just be a static method
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// of `bindings`.
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return Canvas._registerFont(fs.realpathSync(src), fontFace)
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}
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module.exports = {
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Canvas,
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Context2d: CanvasRenderingContext2D, // Legacy/compat export
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CanvasRenderingContext2D,
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CanvasGradient: bindings.CanvasGradient,
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CanvasPattern: bindings.CanvasPattern,
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Image,
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ImageData: bindings.ImageData,
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PNGStream,
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PDFStream,
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JPEGStream,
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DOMMatrix,
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DOMPoint,
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registerFont,
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parseFont,
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createCanvas,
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createImageData,
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loadImage,
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backends: bindings.Backends,
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/** Library version. */
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version: packageJson.version,
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/** Cairo version. */
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cairoVersion: bindings.cairoVersion,
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/** jpeglib version. */
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jpegVersion: bindings.jpegVersion,
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/** gif_lib version. */
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gifVersion: bindings.gifVersion ? bindings.gifVersion.replace(/[^.\d]/g, '') : undefined,
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/** freetype version. */
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freetypeVersion: bindings.freetypeVersion
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}
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