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唐明明
2022-12-26 09:31:55 +08:00
parent f7d357f738
commit 1f3f6b230a
218 changed files with 19796 additions and 0 deletions

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const styles = (v ='') => v.split(';').filter(v => v && !/^[\n\s]+$/.test(v)).map(v => {
const key = v.slice(0, v.indexOf(':'))
const value = v.slice(v.indexOf(':')+1)
return {
[key
.replace(/-([a-z])/g, function() { return arguments[1].toUpperCase()})
.replace(/\s+/g, '')
]: value.replace(/^\s+/, '').replace(/\s+$/, '') || ''
}
})
export function parent(parent) {
return {
provide() {
return {
[parent]: this
}
},
data() {
return {
el: {
css: {},
views: []
},
}
},
watch: {
css: {
handler(v) {
if(this.canvasId) {
this.el.css = (typeof v == 'object' ? v : v && Object.assign(...styles(v))) || {}
this.canvasWidth = this.el.css && this.el.css.width || this.canvasWidth
this.canvasHeight = this.el.css && this.el.css.height || this.canvasHeight
}
},
immediate: true
}
}
}
}
export function children(parent, options = {}) {
const indexKey = options.indexKey || 'index'
return {
inject: {
[parent]: {
default: null
}
},
watch: {
el: {
handler(v, o) {
if(JSON.stringify(v) != JSON.stringify(o))
this.bindRelation()
},
deep: true,
immediate: true
},
src: {
handler(v, o) {
if(v != o)
this.bindRelation()
},
immediate: true
},
text: {
handler(v, o) {
if(v != o) this.bindRelation()
},
immediate: true
},
css: {
handler(v, o) {
if(v != o)
this.el.css = (typeof v == 'object' ? v : v && Object.assign(...styles(v))) || {}
},
immediate: true
},
replace: {
handler(v, o) {
if(JSON.stringify(v) != JSON.stringify(o))
this.bindRelation()
},
deep: true,
immediate: true
}
},
created() {
if(!this._uid) {
this._uid = this._.uid
}
Object.defineProperty(this, 'parent', {
get: () => this[parent] || [],
})
Object.defineProperty(this, 'index', {
get: () => {
this.bindRelation();
const {parent: {el: {views=[]}={}}={}} = this
return views.indexOf(this.el)
},
});
this.el.type = this.type
this.bindRelation()
},
// #ifdef VUE3
beforeUnmount() {
this.removeEl()
},
// #endif
// #ifdef VUE2
beforeDestroy() {
this.removeEl()
},
// #endif
methods: {
removeEl() {
if (this.parent) {
this.parent.el.views = this.parent.el.views.filter(
(item) => item._uid !== this._uid
);
}
},
bindRelation() {
if(!this.el._uid) {
this.el._uid = this._uid
}
if(['text','qrcode'].includes(this.type)) {
this.el.text = this.$slots && this.$slots.default && this.$slots.default[0].text || `${this.text || ''}`.replace(/\\n/g, '\n')
}
if(this.type == 'image') {
this.el.src = this.src
}
if (!this.parent) {
return;
}
let views = this.parent.el.views || [];
if(views.indexOf(this.el) !== -1) {
this.parent.el.views = views.map(v => v._uid == this._uid ? this.el : v)
} else {
this.parent.el.views = [...views, this.el];
}
}
},
mounted() {
// this.bindRelation()
},
}
}

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<template>
</template>
<script>
import {parent, children} from '../common/relation';
export default {
name: 'lime-painter-image',
mixins:[children('painter')],
props: {
css: [String, Object],
src: String
},
data() {
return {
type: 'image',
el: {
css: {},
src: null
},
}
}
}
</script>
<style>
</style>

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<template>
</template>
<script>
import {parent, children} from '../common/relation';
export default {
name: 'lime-painter-qrcode',
mixins:[children('painter')],
props: {
css: [String, Object],
text: String
},
data() {
return {
type: 'qrcode',
el: {
css: {},
text: null
},
}
}
}
</script>
<style>
</style>

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<template>
<text style="opacity: 0;height: 0;"><slot/></text>
</template>
<script>
import {parent, children} from '../common/relation';
export default {
name: 'lime-painter-text',
mixins:[children('painter')],
props: {
css: [String, Object],
text: [String, Number],
replace: Object,
},
data() {
return {
type: 'text',
el: {
css: {},
text: null
},
}
}
}
</script>
<style>
</style>

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<template>
<view><slot/></view>
</template>
<script>
import {parent, children} from '../common/relation';
export default {
name: 'lime-painter-view',
mixins:[children('painter'), parent('painter')],
props: {
css: [String, Object],
},
data() {
return {
type: 'view',
el: {
css: {},
views:[]
},
}
},
mounted() {
}
}
</script>
<style>
</style>

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<template>
<view class="lime-painter" ref="limepainter">
<view v-if="canvasId && size" :style="styles">
<!-- #ifndef APP-NVUE -->
<canvas class="lime-painter__canvas" v-if="use2dCanvas" :id="canvasId" type="2d" :style="size"></canvas>
<canvas class="lime-painter__canvas" v-else :canvas-id="canvasId" :style="size" :id="canvasId"
:width="boardWidth * dpr" :height="boardHeight * dpr"></canvas>
<!-- #endif -->
<!-- #ifdef APP-NVUE -->
<web-view :style="size" ref="webview"
src="/uni_modules/lime-painter/static/index.html"
class="lime-painter__canvas" @pagefinish="onPageFinish" @error="onError" @onPostMessage="onMessage">
</web-view>
<!-- #endif -->
</view>
<slot />
</view>
</template>
<script>
import { parent } from '../common/relation'
import props from './props'
import {toPx, base64ToPath, pathToBase64, isBase64, sleep, getImageInfo}from './utils';
// #ifndef APP-NVUE
import { compareVersion } from './utils';
import Painter from './painter'
// import Painter from '@lime/'
const nvue = {}
// #endif
// #ifdef APP-NVUE
import nvue from './nvue'
// #endif
export default {
name: 'lime-painter',
mixins: [props, parent('painter'), nvue],
data() {
return {
// #ifdef MP-WEIXIN || MP-TOUTIAO || MP-ALIPAY
use2dCanvas: true,
// #endif
// #ifndef MP-WEIXIN || MP-TOUTIAO || MP-ALIPAY
use2dCanvas: false,
// #endif
canvasHeight: 150,
canvasWidth: null,
parentWidth: 0,
inited: false,
progress: 0,
firstRender: 0,
done: false
};
},
computed: {
styles() {
return `${this.size}${this.customStyle||''};`
},
canvasId() {
return `l-painter${this._uid || this._.uid}`
},
size() {
if (this.boardWidth && this.boardHeight) {
return `width:${this.boardWidth}px; height: ${this.boardHeight}px;`;
}
},
dpr() {
return this.pixelRatio || uni.getSystemInfoSync().pixelRatio;
},
boardWidth() {
const {width = 0} = (this.elements && this.elements.css) || this.elements || this
const w = toPx(width||this.width)
return w || Math.max(w, toPx(this.canvasWidth));
},
boardHeight() {
const {height = 0} = (this.elements && this.elements.css) || this.elements || this
const h = toPx(height||this.height)
return h || Math.max(h, toPx(this.canvasHeight));
},
hasBoard() {
return this.board && Object.keys(this.board).length
},
elements() {
return this.hasBoard ? this.board : JSON.parse(JSON.stringify(this.el))
}
},
watch: {
// #ifdef MP-WEIXIN || MP-ALIPAY
size(v) {
// #ifdef MP-WEIXIN
if (this.use2dCanvas) {
this.inited = false;
}
// #endif
// #ifdef MP-ALIPAY
this.inited = false;
// #endif
},
// #endif
},
created() {
const { SDKVersion, version, platform } = uni.getSystemInfoSync();
// #ifdef MP-WEIXIN
this.use2dCanvas = this.type === '2d' && compareVersion(SDKVersion, '2.9.2') >= 0 && !this.isPC;
// #endif
// #ifdef MP-TOUTIAO
this.use2dCanvas = this.type === '2d' && compareVersion(SDKVersion, '1.78.0') >= 0;
// #endif
// #ifdef MP-ALIPAY
this.use2dCanvas = this.type === '2d' && compareVersion(my.SDKVersion, '2.7.15') >= 0;
// #endif
},
async mounted() {
await sleep(30)
await this.getParentWeith()
this.$nextTick(() => {
setTimeout(() => {
this.$watch('elements', this.watchRender, {
deep: true,
immediate: true
});
}, 30)
})
},
methods: {
async watchRender(val, old) {
if (!val || !val.views || (!this.firstRender ? !val.views.length : !this.firstRender) || !Object.keys(val).length || JSON.stringify(val) == JSON.stringify(old)) return;
this.firstRender = 1
clearTimeout(this.rendertimer)
this.rendertimer = setTimeout(() => {
this.render(val);
}, this.beforeDelay)
},
async setFilePath(path, param) {
let filePath = path
const {pathType = this.pathType} = param || this
if (pathType == 'base64' && !isBase64(path)) {
filePath = await pathToBase64(path)
} else if (pathType == 'url' && isBase64(path)) {
filePath = await base64ToPath(path)
}
if (param && param.isEmit) {
this.$emit('success', filePath);
}
return filePath
},
async getSize(args) {
const {width} = args.css || args
const {height} = args.css || args
if (!this.size) {
if (width || height) {
this.canvasWidth = width || this.canvasWidth
this.canvasHeight = height || this.canvasHeight
await sleep(30);
} else {
await this.getParentWeith()
}
}
},
canvasToTempFilePathSync(args) {
this.stopWatch = this.$watch('done', (v) => {
if (v) {
this.canvasToTempFilePath(args)
this.stopWatch && this.stopWatch()
}
}, {
immediate: true
})
},
// #ifndef APP-NVUE
getParentWeith() {
return new Promise(resolve => {
uni.createSelectorQuery()
.in(this)
.select(`.lime-painter`)
.boundingClientRect()
.exec(res => {
const {width, height} = res[0]||{}
this.parentWidth = Math.ceil(width||0)
this.canvasWidth = this.parentWidth || 300
this.canvasHeight = height || this.canvasHeight||150
resolve(res[0])
})
})
},
async render(args = {}) {
if(!Object.keys(args).length) {
return console.error('空对象')
}
this.progress = 0
this.done = false
await this.getSize(args)
const ctx = await this.getContext();
let {
use2dCanvas,
boardWidth,
boardHeight,
canvas,
afterDelay
} = this;
if (use2dCanvas && !canvas) {
return Promise.reject(new Error('render: fail canvas has not been created'));
}
this.boundary = {
top: 0,
left: 0,
width: boardWidth,
height: boardHeight
};
this.painter = null
if (!this.painter) {
const {width} = args.css || args
const {height} = args.css || args
if(!width && this.parentWidth) {
Object.assign(args, {width: this.parentWidth})
}
const param = {
context: ctx,
canvas,
width: boardWidth,
height: boardHeight,
pixelRatio: this.dpr,
useCORS: this.useCORS,
createImage: getImageInfo.bind(this),
listen: {
onProgress: (v) => {
this.progress = v
this.$emit('progress', v)
},
onEffectFail: (err) => {
this.$emit('faill', err)
}
}
}
this.painter = new Painter(param)
}
// vue3 赋值给data会引起图片无法绘制
const { width, height } = await this.painter.source(JSON.parse(JSON.stringify(args)))
this.boundary.height = this.canvasHeight = height
this.boundary.width = this.canvasWidth = width
await sleep(this.sleep);
// 可能会因为尺寸改变影响绘制上下文
this.painter.setContext(this.ctx)
await this.painter.render()
await new Promise(resolve => this.$nextTick(resolve));
if (!use2dCanvas) {
await this.canvasDraw();
}
if (afterDelay && use2dCanvas) {
await sleep(afterDelay);
}
this.$emit('done');
this.done = true
if (this.isCanvasToTempFilePath) {
this.canvasToTempFilePath()
.then(res => {
this.$emit('success', res.tempFilePath)
})
.catch(err => {
this.$emit('fail', new Error(JSON.stringify(err)));
});
}
return Promise.resolve({
ctx,
draw: this.painter,
node: this.node
});
},
canvasDraw(flag = false) {
return new Promise((resolve, reject) => this.ctx.draw(flag, () => setTimeout(() => resolve(), this
.afterDelay)));
},
async getContext() {
if (!this.canvasWidth) {
this.$emit('fail', 'painter no size')
console.error('painter no size: 请给画板或父级设置尺寸')
return Promise.reject();
}
if (this.ctx && this.inited) {
return Promise.resolve(this.ctx);
}
const { type, use2dCanvas, dpr, boardWidth, boardHeight } = this;
const _getContext = () => {
return new Promise(resolve => {
uni.createSelectorQuery()
.in(this)
.select(`#${this.canvasId}`)
.boundingClientRect()
.exec(res => {
if (res) {
const ctx = uni.createCanvasContext(this.canvasId, this);
if (!this.inited) {
this.inited = true;
this.use2dCanvas = false;
this.canvas = res;
}
// #ifdef MP-ALIPAY
ctx.scale(dpr, dpr);
// #endif
this.ctx = ctx
resolve(this.ctx);
}
});
});
};
if (!use2dCanvas) {
return _getContext();
}
return new Promise(resolve => {
uni.createSelectorQuery()
.in(this)
.select(`#${this.canvasId}`)
.node()
.exec(res => {
let {node: canvas} = res[0];
if (!canvas) {
this.use2dCanvas = false;
resolve(this.getContext());
}
const ctx = canvas.getContext(type);
if (!this.inited) {
this.inited = true;
this.use2dCanvas = true;
this.canvas = canvas;
}
this.ctx = ctx
resolve(this.ctx);
});
});
},
canvasToTempFilePath(args = {}) {
return new Promise(async (resolve, reject) => {
const { use2dCanvas, canvasId, dpr, fileType, quality } = this;
const success = async (res) => {
try {
const tempFilePath = await this.setFilePath(res.tempFilePath || res)
resolve(Object.assign(res, {tempFilePath}))
} catch (e) {
this.$emit('fail', e)
}
}
let { top: y = 0, left: x = 0, width, height } = this.boundary || this;
let destWidth = width * dpr;
let destHeight = height * dpr;
// #ifdef MP-ALIPAY
width = destWidth;
height = destHeight;
// #endif
const copyArgs = Object.assign({
x,
y,
width,
height,
destWidth,
destHeight,
canvasId,
fileType,
quality,
success,
fail: reject
}, args);
if (use2dCanvas) {
try{
// #ifndef MP-ALIPAY
if(!args.pathType && !this.pathType) {args.pathType = 'url'}
const tempFilePath = await this.setFilePath(this.canvas.toDataURL(`image/${args.fileType||fileType}`.replace(/pg/, 'peg'), args.quality||quality), args)
args.success && args.success({tempFilePath})
resolve({tempFilePath})
// #endif
// #ifdef MP-ALIPAY
this.canvas.toTempFilePath(copyArgs)
// #endif
}catch(e){
args.fail && args.fail(e)
reject(e)
}
} else {
// #ifdef MP-ALIPAY
uni.canvasToTempFilePath(copyArgs);
// #endif
// #ifndef MP-ALIPAY
uni.canvasToTempFilePath(copyArgs, this);
// #endif
}
})
}
// #endif
}
};
</script>
<style>
.lime-painter,
.lime-painter__canvas {
// #ifndef APP-NVUE
width: 100%;
// #endif
// #ifdef APP-NVUE
flex: 1;
// #endif
}
</style>

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// #ifdef APP-NVUE
import { sleep, getImageInfo, isBase64, useNvue, networkReg } from './utils';
const dom = weex.requireModule('dom')
import {version } from '../../package.json'
export default {
data() {
return {
tempFilePath: [],
isInitFile: false,
osName: uni.getSystemInfoSync().osName
}
},
created() {
// if (this.hybrid) return
// useNvue('_doc/uni_modules/lime-painter/', version, this.timeout).then(res => {
// this.isInitFile = true
// })
},
methods: {
getParentWeith() {
return new Promise(resolve => {
dom.getComponentRect(this.$refs.limepainter, (res) => {
this.parentWidth = Math.ceil(res.size.width)
this.canvasWidth = this.canvasWidth || this.parentWidth ||300
this.canvasHeight = res.size.height || this.canvasHeight||150
resolve(res.size)
})
})
},
onPageFinish() {
this.webview = this.$refs.webview
this.webview.evalJS(`init(${this.dpr})`)
},
onMessage(e) {
const res = e.detail.data[0] || null;
if (res.event) {
if (res.event == 'inited') {
this.inited = true
}
if(res.event == 'fail'){
this.$emit('fail', res)
}
if (res.event == 'layoutChange') {
const data = typeof res.data == 'string' ? JSON.parse(res.data) : res.data
this.canvasWidth = Math.ceil(data.width);
this.canvasHeight = Math.ceil(data.height);
}
if (res.event == 'progressChange') {
this.progress = res.data * 1
}
if (res.event == 'file') {
this.tempFilePath.push(res.data)
if (this.tempFilePath.length > 7) {
this.tempFilePath.shift()
}
return
}
if (res.event == 'success') {
if (res.data) {
this.tempFilePath.push(res.data)
if (this.tempFilePath.length > 8) {
this.tempFilePath.shift()
}
if (this.isCanvasToTempFilePath) {
this.setFilePath(this.tempFilePath.join(''), {isEmit:true})
}
} else {
this.$emit('fail', 'canvas no data')
}
return
}
this.$emit(res.event, JSON.parse(res.data));
} else if (res.file) {
this.file = res.data;
} else{
console.info(res[0])
}
},
getWebViewInited() {
if (this.inited) return Promise.resolve(this.inited);
return new Promise((resolve) => {
this.$watch(
'inited',
async val => {
if (val) {
resolve(val)
}
}, {
immediate: true
}
);
})
},
getTempFilePath() {
if (this.tempFilePath.length == 8) return Promise.resolve(this.tempFilePath)
return new Promise((resolve) => {
this.$watch(
'tempFilePath',
async val => {
if (val.length == 8) {
resolve(val.join(''))
}
}
);
})
},
getWebViewDone() {
if (this.progress == 1) return Promise.resolve(this.progress);
return new Promise((resolve) => {
this.$watch(
'progress',
async val => {
if (val == 1) {
this.$emit('done')
this.done = true
resolve(val)
}
}, {
immediate: true
}
);
})
},
async render(args) {
try {
await this.getSize(args)
const {width} = args.css || args
if(!width && this.parentWidth) {
Object.assign(args, {width: this.parentWidth})
}
const newNode = await this.calcImage(args);
await this.getWebViewInited()
this.webview.evalJS(`source(${JSON.stringify(newNode)})`)
await this.getWebViewDone()
await sleep(this.afterDelay)
if (this.isCanvasToTempFilePath) {
const params = {
fileType: this.fileType,
quality: this.quality
}
this.webview.evalJS(`save(${JSON.stringify(params)})`)
}
return Promise.resolve()
} catch (e) {
this.$emit('fail', e)
}
},
getfile(e){
let url = plus.io.convertLocalFileSystemURL( e )
return new Promise((resolve,reject)=>{
plus.io.resolveLocalFileSystemURL(url, entry => {
var reader = null;
entry.file( file => {
reader = new plus.io.FileReader();
reader.onloadend = ( read )=> {
resolve(read.target.result)
};
reader.readAsDataURL( file );
}, function ( error ) {
alert( error.message );
} );
},err=>{
resolve(e)
})
})
},
async calcImage(args) {
let node = JSON.parse(JSON.stringify(args))
const urlReg = /url\((.+)\)/
const {backgroundImage} = node.css||{}
const isBG = backgroundImage && urlReg.exec(backgroundImage)[1]
const url = node.url || node.src || isBG
if(['text', 'qrcode'].includes(node.type)) {
return node
}
if ((node.type === "image" || isBG) && url && !isBase64(url) && (this.osName == 'ios' ? true : !networkReg.test(url))) {
let {path} = await getImageInfo(url)
if(this.osName == 'ios') {
path = await this.getfile(path)
}
if (isBG) {
node.css.backgroundImage = `url(${path})`
} else {
node.src = path
}
} else if (node.views && node.views.length) {
for (let i = 0; i < node.views.length; i++) {
node.views[i] = await this.calcImage(node.views[i])
}
}
return node
},
async canvasToTempFilePath(args = {}) {
if (!this.inited) {
return this.$emit('fail', 'no init')
}
this.tempFilePath = []
if (args.fileType == 'jpg') {
args.fileType = 'jpeg'
}
this.webview.evalJS(`save(${JSON.stringify(args)})`)
try {
let tempFilePath = await this.getTempFilePath()
tempFilePath = await this.setFilePath(tempFilePath)
args.success({
errMsg: "canvasToTempFilePath:ok",
tempFilePath
})
} catch (e) {
args.fail({
error: e
})
}
}
}
}
// #endif

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export default {
props: {
board: Object,
pathType: String, // 'base64'、'url'
fileType: {
type: String,
default: 'png'
},
quality: {
type: Number,
default: 1
},
css: [String, Object],
// styles: [String, Object],
width: [Number, String],
height: [Number, String],
pixelRatio: Number,
customStyle: String,
isCanvasToTempFilePath: Boolean,
// useCanvasToTempFilePath: Boolean,
sleep: {
type: Number,
default: 1000 / 30
},
beforeDelay: {
type: Number,
default: 100
},
afterDelay: {
type: Number,
default: 100
},
// #ifdef MP-WEIXIN || MP-TOUTIAO || MP-ALIPAY
type: {
type: String,
default: '2d'
},
// #endif
// #ifdef APP-NVUE
hybrid: Boolean,
timeout: {
type: Number,
default: 2000
},
// #endif
// #ifdef H5
useCORS: Boolean
// #endif
}
}

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export const networkReg = /^(http|\/\/)/;
export const isBase64 = (path) => /^data:image\/(\w+);base64/.test(path);
export function sleep(delay) {
return new Promise(resolve => setTimeout(resolve, delay))
}
const isDev = ['devtools'].includes(uni.getSystemInfoSync().platform)
// 缓存图片
let cache = {}
export function isNumber(value) {
return /^-?\d+(\.\d+)?$/.test(value);
}
export function toPx(value, baseSize, isDecimal = false) {
// 如果是数字
if (typeof value === 'number') {
return value
}
// 如果是字符串数字
if (isNumber(value)) {
return value * 1
}
// 如果有单位
if (typeof value === 'string') {
const reg = /^-?([0-9]+)?([.]{1}[0-9]+){0,1}(em|rpx|px|%)$/g
const results = reg.exec(value);
if (!value || !results) {
return 0;
}
const unit = results[3];
value = parseFloat(value);
let res = 0;
if (unit === 'rpx') {
res = uni.upx2px(value);
} else if (unit === 'px') {
res = value * 1;
} else if (unit === '%') {
res = value * toPx(baseSize) / 100;
} else if (unit === 'em') {
res = value * toPx(baseSize || 14);
}
return isDecimal ? res.toFixed(2) * 1 : Math.round(res);
}
return 0
}
// 计算版本
export function compareVersion(v1, v2) {
v1 = v1.split('.')
v2 = v2.split('.')
const len = Math.max(v1.length, v2.length)
while (v1.length < len) {
v1.push('0')
}
while (v2.length < len) {
v2.push('0')
}
for (let i = 0; i < len; i++) {
const num1 = parseInt(v1[i], 10)
const num2 = parseInt(v2[i], 10)
if (num1 > num2) {
return 1
} else if (num1 < num2) {
return -1
}
}
return 0
}
// #ifdef MP
export const prefix = () => {
// #ifdef MP-TOUTIAO
return tt
// #endif
// #ifdef MP-WEIXIN
return wx
// #endif
// #ifdef MP-BAIDU
return swan
// #endif
// #ifdef MP-ALIPAY
return my
// #endif
// #ifdef MP-QQ
return qq
// #endif
// #ifdef MP-360
return qh
// #endif
}
// #endif
const base64ToArrayBuffer = (data) => {
// #ifndef MP-WEIXIN || APP-PLUS
/**
* Base64Binary.decode(base64_string);
* Base64Binary.decodeArrayBuffer(base64_string);
*/
const Base64Binary = {
_keyStr: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",
/* will return a Uint8Array type */
decodeArrayBuffer(input) {
const bytes = (input.length / 4) * 3;
const ab = new ArrayBuffer(bytes);
this.decode(input, ab);
return ab;
},
removePaddingChars(input) {
const lkey = this._keyStr.indexOf(input.charAt(input.length - 1));
if (lkey == 64) {
return input.substring(0, input.length - 1);
}
return input;
},
decode(input, arrayBuffer) {
//get last chars to see if are valid
input = this.removePaddingChars(input);
input = this.removePaddingChars(input);
const bytes = parseInt((input.length / 4) * 3, 10);
let uarray;
let chr1, chr2, chr3;
let enc1, enc2, enc3, enc4;
let i = 0;
let j = 0;
if (arrayBuffer)
uarray = new Uint8Array(arrayBuffer);
else
uarray = new Uint8Array(bytes);
input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
for (i = 0; i < bytes; i += 3) {
//get the 3 octects in 4 ascii chars
enc1 = this._keyStr.indexOf(input.charAt(j++));
enc2 = this._keyStr.indexOf(input.charAt(j++));
enc3 = this._keyStr.indexOf(input.charAt(j++));
enc4 = this._keyStr.indexOf(input.charAt(j++));
chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4;
uarray[i] = chr1;
if (enc3 != 64) uarray[i + 1] = chr2;
if (enc4 != 64) uarray[i + 2] = chr3;
}
return uarray;
}
}
return Base64Binary.decodeArrayBuffer(data)
// #endif
// #ifdef MP-WEIXIN || APP-PLUS
return uni.base64ToArrayBuffer(data)
// #endif
}
/**
* base64转路径
* @param {Object} base64
*/
export function base64ToPath(base64) {
const [, format] = /^data:image\/(\w+);base64,/.exec(base64) || [];
return new Promise((resolve, reject) => {
// #ifdef MP
const fs = uni.getFileSystemManager()
//自定义文件名
if (!format) {
reject(new Error('ERROR_BASE64SRC_PARSE'))
}
const time = new Date().getTime();
let pre = prefix()
const filePath = `${pre.env.USER_DATA_PATH}/${time}.${format}`
//let buffer = base64ToArrayBuffer(bodyData)
fs.writeFile({
filePath,
data: base64.split(',')[1], //base64.replace(/^data:\S+\/\S+;base64,/, ''),
encoding: 'base64',
// data: buffer,
// encoding: 'binary',
success() {
resolve(filePath)
},
fail(err) {
reject(err)
}
})
// #endif
// #ifdef H5
// mime类型
let mimeString = base64.split(',')[0].split(':')[1].split(';')[0];
//base64 解码
let byteString = atob(base64.split(',')[1]);
//创建缓冲数组
let arrayBuffer = new ArrayBuffer(byteString.length);
//创建视图
let intArray = new Uint8Array(arrayBuffer);
for (let i = 0; i < byteString.length; i++) {
intArray[i] = byteString.charCodeAt(i);
}
resolve(URL.createObjectURL(new Blob([intArray], {
type: mimeString
})))
// #endif
// #ifdef APP-PLUS
const bitmap = new plus.nativeObj.Bitmap('bitmap' + Date.now())
bitmap.loadBase64Data(base64, () => {
if (!format) {
reject(new Error('ERROR_BASE64SRC_PARSE'))
}
const time = new Date().getTime();
const filePath = `_doc/uniapp_temp/${time}.${format}`
bitmap.save(filePath, {},
() => {
bitmap.clear()
resolve(filePath)
},
(error) => {
bitmap.clear()
reject(error)
})
}, (error) => {
bitmap.clear()
reject(error)
})
// #endif
})
}
/**
* 路径转base64
* @param {Object} string
*/
export function pathToBase64(path) {
if (/^data:/.test(path)) return path
return new Promise((resolve, reject) => {
// #ifdef H5
let image = new Image();
image.setAttribute("crossOrigin", 'Anonymous');
image.onload = function() {
let canvas = document.createElement('canvas');
canvas.width = this.naturalWidth;
canvas.height = this.naturalHeight;
canvas.getContext('2d').drawImage(image, 0, 0);
let result = canvas.toDataURL('image/png')
resolve(result);
canvas.height = canvas.width = 0
}
image.src = path + '?v=' + Math.random()
image.onerror = (error) => {
reject(error);
};
// #endif
// #ifdef MP
if (uni.canIUse('getFileSystemManager')) {
uni.getFileSystemManager().readFile({
filePath: path,
encoding: 'base64',
success: (res) => {
resolve('data:image/png;base64,' + res.data)
},
fail: (error) => {
reject(error)
}
})
}
// #endif
// #ifdef APP-PLUS
plus.io.resolveLocalFileSystemURL(getLocalFilePath(path), (entry) => {
entry.file((file) => {
const fileReader = new plus.io.FileReader()
fileReader.onload = (data) => {
resolve(data.target.result)
}
fileReader.onerror = (error) => {
reject(error)
}
fileReader.readAsDataURL(file)
}, reject)
}, reject)
// #endif
})
}
export function getImageInfo(path, useCORS) {
return new Promise(async (resolve, reject) => {
let src = path
if (cache[path] && cache[path].errMsg) {
resolve(cache[path])
} else {
try {
// if (!isBase64 && PLATFORM == UNI_PLATFORM.PLUS && !/^\/?(static|_doc)\//.test(src)) {
// src = await downloadFile(path) as string
// } else
// #ifdef MP || APP-PLUS
if (isBase64(path)) {
src = await base64ToPath(path)
}
// #endif
// #ifdef H5
if(useCORS) {
src = await pathToBase64(path)
}
// #endif
} catch (error) {
reject({
...error,
src
})
}
uni.getImageInfo({
src,
success: (image) => {
const localReg = /^\.|^\/(?=[^\/])/;
// #ifdef MP-WEIXIN || MP-BAIDU || MP-QQ || MP-TOUTIAO
image.path = localReg.test(src) ? `/${image.path}` : image.path;
// #endif
// #ifdef H5
image.path = image.path.replace(/^\./, window.location.origin)
// #endif
if(this.canvas.createImage) {
const img = this.canvas.createImage()
img.src = image.path
img.onload = function() {
image.path = img
cache[path] = image
resolve(cache[path])
}
img.onerror = function(err) {
reject({err,path})
}
} else if (isDev) {
resolve(image)
} else {
cache[path] = image
resolve(cache[path])
}
},
fail(err) {
console.error({err, path})
reject({err,path})
}
})
}
})
}
export function downloadFile(url) {
if (!url) return Promise.reject({
err: 'no url'
})
return new Promise((resolve, reject) => {
if (cache[url]) {
return reject()
}
cache[url] = 1
uni.downloadFile({
url,
success(res) {
resolve(res)
},
fail(err) {
reject(err)
}
})
})
}
// #ifdef APP-PLUS
const getLocalFilePath = (path) => {
if (path.indexOf('_www') === 0 || path.indexOf('_doc') === 0 || path.indexOf('_documents') === 0 || path
.indexOf('_downloads') === 0) {
return path
}
if (path.indexOf('file://') === 0) {
return path
}
if (path.indexOf('/storage/emulated/0/') === 0) {
return path
}
if (path.indexOf('/') === 0) {
const localFilePath = plus.io.convertAbsoluteFileSystem(path)
if (localFilePath !== path) {
return localFilePath
} else {
path = path.substr(1)
}
}
return '_www/' + path
}
const getFile = (url) => {
return new Promise((resolve, rejcet) => {
plus.io.resolveLocalFileSystemURL(url, resolve, (err) => {
resolve(false)
})
})
}
const createFile = ({
fs,
url,
target,
name
}) => {
return new Promise((resolve, reject) => {
plus.io.resolveLocalFileSystemURL(url, res1 => {
fs.root.getDirectory(target, {
create: true
}, fileEntry => {
const success = () => {
res1.remove()
resolve()
}
getFile(target + name).then(res => {
if (res) {
res.remove((res2) => {
res1.moveTo(fileEntry, name, success, reject)
})
}
res1.moveTo(fileEntry, name, success, reject)
})
})
}, reject)
})
}
export function useNvue(target, version, timeout) {
return new Promise((resolve, reject) => {
plus.io.requestFileSystem(plus.io.PRIVATE_DOC, async (fs) => {
try {
cache['lime-painter'] = 0
let names = ['uni.webview.1.5.3.js', 'painter.js', 'index.html']
let urls = ['https://gitee.com/dcloud/uni-app/raw/dev/dist/',
'https://static-6d65bd90-8508-4d6c-abbc-a4ef5c8e49e7.bspapp.com/lime-painter/'
]
const oldVersion = plus.storage.getItem('lime-painter')
const isFile = await getFile(`${target}${names[1]}`)
if (isFile && oldVersion && compareVersion(oldVersion, version) >= 0) {
resolve()
} else {
for (var i = 0; i < names.length; i++) {
const name = names[i]
const file = await downloadFile(urls[i >= 1 ? 1 : 0] + name)
await createFile({
fs,
url: file.tempFilePath,
target,
name: name.includes('uni.webview') ? 'uni.webview.js' : name
})
}
plus.storage.setItem('lime-painter', version)
cache['lime-painter'] = version
resolve()
}
} catch (e) {
let index = parseInt(timeout / 20)
while (!cache['lime-painter'] && index) {
await sleep(20)
index--
}
if (cache['lime-painter']) {
resolve()
} else {
reject(e)
}
}
}, reject)
})
}
// #endif

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<template>
</template>