mirror of
https://gitee.com/onvia/ccc-tnt-psd2ui
synced 2024-12-26 11:48:25 +00:00
36 lines
1.0 KiB
JavaScript
36 lines
1.0 KiB
JavaScript
|
/* globals document, ImageData */
|
||
|
|
|
||
|
|
const parseFont = require('./lib/parse-font')
|
||
|
|
|
||
|
|
exports.parseFont = parseFont
|
||
|
|
|
||
|
|
exports.createCanvas = function (width, height) {
|
||
|
|
return Object.assign(document.createElement('canvas'), { width: width, height: height })
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.createImageData = function (array, width, height) {
|
||
|
|
// Browser implementation of ImageData looks at the number of arguments passed
|
||
|
|
switch (arguments.length) {
|
||
|
|
case 0: return new ImageData()
|
||
|
|
case 1: return new ImageData(array)
|
||
|
|
case 2: return new ImageData(array, width)
|
||
|
|
default: return new ImageData(array, width, height)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
exports.loadImage = function (src, options) {
|
||
|
|
return new Promise(function (resolve, reject) {
|
||
|
|
const image = Object.assign(document.createElement('img'), options)
|
||
|
|
|
||
|
|
function cleanup () {
|
||
|
|
image.onload = null
|
||
|
|
image.onerror = null
|
||
|
|
}
|
||
|
|
|
||
|
|
image.onload = function () { cleanup(); resolve(image) }
|
||
|
|
image.onerror = function () { cleanup(); reject(new Error('Failed to load the image "' + src + '"')) }
|
||
|
|
|
||
|
|
image.src = src
|
||
|
|
})
|
||
|
|
}
|