初始化仓库

components/lime-painter/components/common/relation.js

@@ -0,0 +1,141 @@
+import {base64ToPath} from '../l-painter/utils.js'
+
+const styles = (v = '') => v.split(';').filter(v => v && !/^[\n\s]+$/.test(v)).map(v => {
+	const item = v.split(':');
+	return {
+		[item[0]
+			.replace(/-([a-z])/g, function() {
+				return arguments[1].toUpperCase()
+			})
+			.replace(/\s+/g, '')
+		]: item?. [1]?.replace(/^\s+/, '')?.replace(/\s+$/, '') || ''
+	}
+})
+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?.width || this.canvasWidth
+						this.canvasHeight = 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() {
+			Object.defineProperty(this, 'parent', {
+				get: () => {
+					return this[parent]
+				},
+			})
+			Object.defineProperty(this, 'index', {
+				get: () => {
+					this.bindRelation();
+					return this.parent?.el.views?.indexOf(this.el)
+				},
+			});
+			this.el.type = this.type
+		},
+		beforeDestroy() {
+			if (this.parent) {
+				this.parent.el.views = this.parent.el.views.filter(
+					(item) => item._uid !== this._uid
+				);
+			}
+		},
+		methods: {
+			bindRelation() {
+				if (!this.el._uid) {
+					this.el._uid = this._uid
+				}
+				if (['text', 'qrcode'].includes(this.type)) {
+					this.el.text = this.$slots?.default?. [0]?.text || this.text?.replace(/\\n/g, '\n')
+				}
+				if (this.type == 'text' && this.replace) {
+					this.el.replace = this.replace
+				}
+				if (this.type == 'image') {
+					this.el.src = this.src
+				}
+				//  || this.parent.el.views.indexOf(this.el) !== -1
+				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()
+		},
+	}
+}

components/lime-painter/components/l-painter-image/l-painter-image.vue

@@ -0,0 +1,27 @@
+<template>
+	<view></view>
+</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>

components/lime-painter/components/l-painter-qrcode/l-painter-qrcode.vue

@@ -0,0 +1,27 @@
+<template>
+	<view></view>
+</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>

components/lime-painter/components/l-painter-text/l-painter-text.vue

@@ -0,0 +1,28 @@
+<template>
+	<text style="opacity: 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>

components/lime-painter/components/l-painter-view/l-painter-view.vue

@@ -0,0 +1,26 @@
+<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:[]
+				},
+			}
+		}
+	}
+</script>
+
+<style>
+</style>

components/lime-painter/components/l-painter/l-painter.vue

@@ -0,0 +1,523 @@
+<template>
+	<view v-if="canvasId && size" class="lime-painter" :style="size + customStyle">
+	<!-- #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" 
+		class="lime-painter__canvas"
+		@pagefinish="onPageFinish"
+		@error="onError"
+		@onPostMessage="onMessage"
+		></web-view>
+	<!-- #endif -->
+		<slot/>
+	</view>
+</template>
+
+
+<script>
+import { toPx, compareVersion, sleep, base64ToPath, pathToBase64, getImageInfo, isBase64 } from './utils';
+import {parent} from '../common/relation'
+//  #ifndef APP-NVUE
+import {Painter} from './painter'
+//  #endif
+//  #ifdef APP-NVUE
+import painterScript from './nvue'
+//  #endif
+export default {
+	name: 'lime-painter',
+	mixins:[parent('painter')],
+	props: {
+		board: Object,
+		pathType: {
+			type: String,
+			// default: 'url'
+			// 'base64'、'url'
+		},
+		fileType: {
+			type: String,
+			default: 'png'
+		},
+		quality: {
+			type: Number,
+			default: 1
+		},
+		css: [String, Object],
+		width: [Number, String],
+		height: [Number, String],
+		pixelRatio: Number,
+		customStyle: String,
+		isCanvasToTempFilePath: 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
+	},
+	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,
+			isDrawIng: false,
+			isPC: false,
+			inited: false,
+			name: 'view',
+			progress: 0,
+			// #ifdef APP-NVUE
+			tempFilePath: [],
+			// #endif
+		};
+	},
+	computed: {
+		canvasId() {
+			return `l-painter${this._uid}`
+		},
+		size() {
+			if(this.boardWidth && this.boardHeight) {
+				return `width:${this.boardWidth}px; height: ${this.boardHeight}px;`;
+			}
+		},
+		dpr() {
+			return this.pixelRatio || uni.getSystemInfoSync().pixelRatio;
+		},
+		boardWidth() {
+			const {width = 0, canvasWidth = 0} = this
+			const {width: boardWidth = 0} = this.board?.css || this.board || {}
+			return Math.max(toPx(width || boardWidth), toPx(canvasWidth));
+		},
+		boardHeight() {
+			const {height= 0, canvasHeight =0} = this
+			const {height: boardHeight = 0} =  this.board?.css || this.board || {}
+			return Math.max(toPx(height || boardHeight), toPx(canvasHeight));
+		}
+	},
+	watch: {
+		canvasWidth(v) {
+			if(this.el.css && !this.el.css?.width) {
+				this.el.css.width = v
+			}
+		},
+		size(v) {
+			// #ifdef MP-WEIXIN
+			if (this.use2dCanvas) {
+				this.inited = false;
+			}
+			// #endif
+			// #ifdef MP-ALIPAY
+			this.inited = false;
+			// #endif
+		},
+	},
+	// #ifdef MP-WEIXIN || MP-TOUTIAO || MP-ALIPAY
+	created() {
+		const { SDKVersion, version, platform, environment } = uni.getSystemInfoSync();
+		// #ifdef MP-WEIXIN
+		// ios wx7.0.20 createImage bug
+		this.isPC = /windows/i.test(platform)
+		this.use2dCanvas = this.type === '2d' && compareVersion(SDKVersion, '2.9.2') >= 0 && !((/ios/i.test(platform) && /7.0.20/.test(version)) || /wxwork/i.test(environment)) && !this.isPC;
+		// #endif
+		// #ifdef MP-TOUTIAO
+		this.use2dCanvas = this.type === '2d' && compareVersion(SDKVersion, '1.78.0') >= 0;
+		// #endif
+		// #ifdef MP-TOUTIAO
+		this.use2dCanvas = this.type === '2d' && compareVersion(SDKVersion, '2.8.0') >= 0;
+		// #endif
+	},
+		// #endif
+	mounted() {
+		// #ifdef APP-NVUE
+		this.webViewInit()
+		// #endif
+		this.$nextTick(() => {
+			setTimeout(() => {
+				if(this.board) {
+					this.$watch('board', this.watchRender, {deep: true,immediate: true});
+				} else if(this.el.views.length) {
+					this.$watch('el', this.watchRender, {deep: true,immediate: true});
+				}
+			},30)
+		})
+	},
+	methods: {
+		async watchRender(val) {
+			this.progress = 0
+			if (JSON.stringify(val) === '{}' || !val) return;
+			clearTimeout(this.rendertimer)
+			this.rendertimer = setTimeout(() => {
+				this.render(val);
+			}, this.beforeDelay)
+		},
+		async setFilePath(path, isEmit) {
+			let filePath = path
+			const {pathType} = this
+			if(pathType == 'base64' && !isBase64(path)) {
+				filePath = await pathToBase64(path)
+			} else if(pathType == 'url' && isBase64(path)) {
+				filePath = await base64ToPath(path)
+			}
+			if(isEmit) {
+				this.$emit('success', filePath);
+			}
+			return filePath
+		},
+		// #ifdef APP-NVUE
+		onError(e) {
+			console.log('onError', e)
+		},
+		// onPagestart() {
+		// 	console.log('onPagestart')
+		// },
+		// onPageFinish() {
+		// 	this.$refs.webview.evalJS(`init()`) 
+		// },
+		// onReceivedTitle() {
+		// 	console.log('onReceivedTitle')
+		// },
+		onMessage(e) {
+			const res = e?.detail?.data[0] || null;
+			if (res?.event) {
+				if(res.event == 'inited') {
+					this.inited = true
+				}
+				if(res.event == 'layoutChange') {
+					const data = JSON.parse(res.data)
+					this.canvasWidth = data.width;
+					this.canvasHeight = 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(''), true)
+						}
+					} else {
+						this.$emit('fail')
+					}
+					return
+				}
+				this.$emit(res.event, JSON.parse(res.data));
+			} else if (res?.file) {
+				this.file = res.data;
+			} else {
+				console.error(res);
+			}
+		},
+		async webViewInit() {
+			await sleep(30)
+			// await this.getWebViewInited()
+			const webview = this.$refs.webview;
+			webview.evalJS(painterScript)
+		},
+		getWebViewInited() {
+			if(this.inited) return Promise.resolve(this.inited);
+			return new Promise((resolve) => {
+				this.$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.$emit('done')
+							resolve(val)
+					}},
+					{immediate: true}
+				);
+			})
+		},
+		async render(args) {
+			const newNode = await this.calcImage(args);
+			await this.getWebViewInited()
+			const webview = this.$refs.webview;
+			webview.evalJS(`source(${JSON.stringify(newNode)})`) 
+			if(this.isCanvasToTempFilePath) {
+				await this.getWebViewDone()
+				await sleep(this.afterDelay)
+				const params = {fileType: this.fileType, quality: this.quality}
+				webview.evalJS(`save(${JSON.stringify(params)})`) 
+			}
+		},
+		async calcImage(args) {
+			let node = JSON.parse(JSON.stringify(args))
+			const url = node.url || node.src
+			if(node.type === "image" && url && !isBase64(url)) {
+				const suffix = url.match(/\.(\w+)$/)[1]
+				const {width = 0, height = 0, path, naturalSrc} = await getImageInfo(url)
+				const src = await pathToBase64(path)
+				node.src = src.replace(/^data:application[\w\/]+;base64/,'data:image/'+suffix+';base64')
+			} else if(node.views?.length) {
+				for (let i = 0; i < node.views.length; i++) {
+					node.views[i] = await this.calcImage(node.views[i])
+				}
+			}
+			return node
+		},
+		async canvasToTempFilePath(args = {}){
+			this.tempFilePath = []
+			this.$refs.webview.evalJS(`save(${JSON.stringify(args)})`) 
+			try{
+				let tempFilePath = await this.getTempFilePath()
+				tempFilePath = await this.setFilePath(tempFilePath)
+				args.success({errMsg: "canvasToTempFilePath:ok", tempFilePath})
+			}catch(e){
+				args.fail({error: e})
+			}
+		}
+		// #endif
+		// #ifndef APP-NVUE
+		getParentWeith() {
+			uni.createSelectorQuery()
+				.in(this)
+				.select(`.lime-painter`)
+				.boundingClientRect()
+				.exec(res => {
+					this.canvasWidth = Math.ceil(res[0].width)
+					this.canvasHeight = res[0].height
+				})
+		},
+		async update(args, single) {
+			this.painter = null;
+			// #ifdef MP-WEIXIN
+			if (this.use2dCanvas) {
+				this.ctx = null;
+				this.inited = false;
+			}
+			// #endif
+			// #ifdef MP-ALIPAY
+			this.inited = false;
+			// #endif
+			this.isDrawIng = false;
+			await new Promise(resolve => this.$nextTick(resolve));
+			await sleep(200);
+			return this.render(args, single);
+		},
+		async render(args = {}, single = false) {
+			if (this.isDrawIng) {
+				return this.update(args, single);
+			}
+			this.isDrawIng = true;
+			const isArg = JSON.stringify(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
+			};
+			// if (!single) {
+			// 	ctx.clearRect(0, 0, boardWidth, boardHeight);
+			// }
+			if(!this.painter) {
+				this.painter = new Painter({context: ctx, canvas, width: boardWidth, height: boardHeight, pixelRatio: this.dpr}, this)
+			} 
+			this.painter.listen('progressChange', (v) => {
+				this.$emit('progress', v)
+			})
+			const {width, height} = await this.painter.source(args)
+			this.canvasHeight = toPx(this.el.css?.height) || height
+			this.canvasWidth = toPx(this.el.css?.width) || width
+			this.boundary.height = this.canvasHeight
+			this.boundary.width = this.canvasWidth
+			await sleep(this.sleep);
+			await this.painter.render()
+			
+			await new Promise(resolve => this.$nextTick(resolve));
+			if (!use2dCanvas && !single) {
+				await this.canvasDraw();
+			}
+			if (afterDelay && use2dCanvas) {
+				await sleep(afterDelay);
+			}
+			this.$emit('done');
+			if (this.isCanvasToTempFilePath && !single && this.isDrawIng) {
+				this.canvasToTempFilePath()
+					.then(async res => {
+						this.$emit('success', res.tempFilePath)
+					})
+					.catch(err => {
+						this.$emit('fail', new Error(JSON.stringify(err)));
+					});
+			}
+			this.isDrawIng = false;
+			return Promise.resolve({ ctx, draw: this.painter, node: this.node });
+		},
+		async custom(cb) {
+			const { ctx, draw } = await this.render({}, true);
+			ctx.save();
+			await cb(ctx, draw);
+			ctx.restore();
+			return Promise.resolve(true);
+		},
+		async single(args = {}) {
+			const res = await this.render(args, true);
+			return Promise.resolve(res);
+		},
+		canvasDraw(flag = false) {
+			return new Promise((resolve, reject) => this.ctx.draw(flag, () => setTimeout(() => resolve(), this.afterDelay)));
+		},
+		async getContext() {
+			if (this.ctx && this.inited) {
+				return Promise.resolve(this.ctx);
+			}
+			this.getParentWeith()
+			const { type, use2dCanvas, dpr, boardWidth, boardHeight } = this;
+			const _getContext = () => {
+				return new Promise(resolve => {
+					uni.createSelectorQuery()
+						.in(this)
+						.select(`#${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;
+								}
+								if(this.isPC) {
+									ctx.scale(1/dpr, 1/dpr);
+								}
+								// #ifdef MP-ALIPAY
+								ctx.scale(dpr, dpr);
+								// #endif
+								this.ctx = ctx
+								resolve(this.ctx);
+							}
+						});
+				});
+			};
+			// #ifndef MP-WEIXIN
+			return _getContext();
+			// #endif
+
+			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 = {}) {
+			const { use2dCanvas, canvasId, dpr, fileType, quality } = this;
+			return new Promise((resolve, reject) => {
+				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 success = async (res) => {
+					const tempFilePath = await this.setFilePath(res.tempFilePath)
+					resolve(Object.assign(res, {tempFilePath}))
+				} 
+				const copyArgs = Object.assign({
+					x,
+					y,
+					width,
+					height,
+					destWidth,
+					destHeight,
+					canvasId,
+					fileType,
+					quality,
+					success,
+					fail: reject
+				}, args);
+				if (use2dCanvas) {
+					delete copyArgs.canvasId;
+					copyArgs.canvas = this.canvas;
+				}
+				uni.canvasToTempFilePath(copyArgs, this);
+			});
+		}
+		// #endif
+	}
+};
+</script>
+<style>
+	.lime-painter, .lime-painter__canvas {
+		// #ifndef APP-NVUE
+		width: 100%;
+		// #endif
+		// #ifdef APP-NVUE
+		flex: 1;
+		// #endif
+	}
+</style>

components/lime-painter/components/l-painter/nvue.js

@@ -0,0 +1,103 @@
+const painterContent = `
+	var cache = [];
+	var painter = null;
+	var canvas = null;
+	var context = null;
+	var timer = null;
+	var pixelRatio = 1;
+	console.log = function(...args) {
+		postMessage(args);
+	};
+	function stringify(key, value) {
+		if (typeof value === 'object' && value !== null) {
+			if (cache.indexOf(value) !== -1) {
+				return;
+			}
+			cache.push(value);
+		}
+		return value;
+	};
+	function emit(event, data) {
+		let dataStr = typeof data !== 'object' && data !== null ? data : JSON.stringify(data, stringify);
+		postMessage({
+			event,
+			data: dataStr
+		});
+		cache = [];
+	};
+	function postMessage(data) {
+		uni.postMessage({
+			data
+		});
+	};
+	function init() {
+		canvas = document.querySelector('#lime-painter');
+		context = canvas.getContext('2d');
+		pixelRatio = window.devicePixelRatio;
+		painter = new Painter({
+		      id: 'lime-painter',
+		      context,
+		      canvas,
+		      pixelRatio,
+		      width: canvas.offsetWidth,
+		      height: canvas.offsetHeight
+		});
+		emit('inited', true);
+		painter.listen('progressChange', (v) => {
+			emit('progressChange', v);
+		});
+	};
+	function save(args) {
+		delete args.success;
+		delete args.fail;
+		clearTimeout(timer);
+		timer = setTimeout(() => {
+			const path = painter.save(args);
+			if(typeof path == 'string') {
+				const index = Math.ceil(path.length / 8);
+				for (var i = 0; i < 8; i++) {
+					if(i == 7) {
+						emit('success', path.substr(i * index, index));
+					} else {
+						emit('file', path.substr(i * index, index));
+					}
+				};
+			} else {
+				emit('fail', '');
+			};
+		}, 30);
+	};
+	async function source(args) {
+		let res = await painter.source(args);
+		emit('layoutChange', res);
+		await painter.render();
+	};
+`
+export default `
+	document.write("<canvas id='lime-painter'>不支持cavnas</canvas>");
+	let meta = document.createElement('meta');
+	meta.name = 'viewport';
+	meta.content = 'width=device-width, initial-scale=1.0';
+	document.head.appendChild(meta);
+	let styleEl = document.createElement('style');
+	styleEl.setAttribute('type', 'text/css');
+	styleEl.textContent='html,body,#lime-painter{padding: 0; margin: 0; width:100%;height:100%}';
+	document.head.appendChild(styleEl);
+	
+	var script = document.createElement("script");
+	script.language = "javascript";
+	script.src = "https://js.cdn.aliyun.dcloud.net.cn/dev/uni-app/uni.webview.1.5.2.js";
+	script.onload = function() {
+		var script = document.createElement("script");
+		script.language = "javascript";
+		script.src = "https://cdn.jsdelivr.net/gh/liangei/image@latest/lime-ui/lime-painter/painter.js";
+		script.onload = function() {init()};
+		document.head.appendChild(script);
+	};
+	document.head.appendChild(script);
+	
+	var script = document.createElement("script");
+	script.language = "javascript";
+	script.text = "${painterContent}";
+	document.body.appendChild(script);
+`

components/lime-painter/components/l-painter/utils.js

@@ -0,0 +1,414 @@
+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, bodyData] = /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) {
+			console.error('ERROR_BASE64SRC_PARSE')
+			reject(new Error('ERROR_BASE64SRC_PARSE'))
+		}
+		const time = new Date().getTime();
+		let pre = prefix()
+		const filePath = `${pre.env.USER_DATA_PATH}/${time}.${format}`
+		//let buffer = base64ToArrayBuffer(bodyData)
+		console.log(filePath)
+		fs.writeFile({
+			filePath,
+			data: base64.replace(/^data:\S+\/\S+;base64,/, ''),
+			encoding: 'base64',
+			// data: buffer,
+			// encoding: 'binary',
+			success() {
+				resolve(filePath)
+			},
+			fail(err) {
+				
+					console.log(base64,'!!!!!!')
+				console.error('获取base64图片失败', JSON.stringify(err))
+				reject(err)
+			}
+		})
+		// #endif
+		
+		// #ifdef H5
+		// mime类型
+		let mimeString = base64.split(',')[0].split(':')[1].split(';')[0]; 
+		//base64 解码
+		let byteString = atob(base64.split(',')[1]); 
+		//创建缓冲数组
+		let arrayBuffer = new ArrayBuffer(byteString.length);
+		//创建视图
+		let intArray = new Uint8Array(arrayBuffer); 
+		for (let i = 0; i < byteString.length; i++) {
+			intArray[i] = byteString.charCodeAt(i);
+		}
+		resolve(URL.createObjectURL(new Blob([intArray], { type: mimeString })))
+		// #endif
+		
+		// #ifdef APP-PLUS
+		const bitmap = new plus.nativeObj.Bitmap('bitmap' + Date.now())
+		bitmap.loadBase64Data(base64, () => {
+			if (!format) {
+				reject(new Error('ERROR_BASE64SRC_PARSE'))
+			}
+			const time = new Date().getTime();
+			const filePath = `_doc/uniapp_temp/${time}.${format}`
+			bitmap.save(filePath, {}, 
+				() => {
+					bitmap.clear()
+					resolve(filePath)
+				}, 
+				(error) => {
+					bitmap.clear()
+					console.error(`${JSON.stringify(error)}`)
+					reject(error)
+				})
+		}, (error) => {
+			bitmap.clear()
+			console.error(`${JSON.stringify(error)}`)
+			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
+		const _canvas = ()=> {
+			let image = new Image();
+			image.setAttribute("crossOrigin",'Anonymous');
+			image.onload = function() {
+				let canvas = document.createElement('canvas');
+				// 获取图片原始宽高
+				canvas.width = this.naturalWidth;
+				canvas.height = this.naturalHeight;
+				// 将图片插入画布并开始绘制
+				canvas.getContext('2d').drawImage(image, 0, 0);
+				let result = canvas.toDataURL('image/png')
+				resolve(result);
+				canvas.height = canvas.width = 0
+			}
+			image.src = path
+			image.onerror = (error) => {
+				console.error(`urlToBase64 error: ${path}`, JSON.stringify(error))
+			    reject(new Error('urlToBase64 error'));
+			};
+		}
+		const _fileReader = (blob) => {
+			const fileReader = new FileReader();
+			fileReader.onload = (e) => {
+			    resolve(e.target.result);
+			};
+			fileReader.readAsDataURL(blob);
+			fileReader.onerror = (error) => {
+				console.error('blobToBase64 error:', JSON.stringify(error))
+			    reject(new Error('blobToBase64 error'));
+			};
+		}
+		const isFileReader = typeof FileReader === 'function'
+		if(networkReg.test(path) && isFileReader ) {
+			window.URL = window.URL || window.webkitURL;
+			const xhr = new XMLHttpRequest();
+			xhr.open("get", path, true);
+			xhr.timeout = 2000;
+			xhr.responseType = "blob";
+			xhr.onload = function() {
+				if(this.status == 200) {
+					_fileReader(this.response)
+				} else {
+					_canvas()
+				}
+			}
+			xhr.onreadystatechange = function() {
+				if(this.status === 0) {
+					console.error('图片跨域了，得后端处理咯')
+				}
+			}
+			xhr.send();
+		} else if(/^blob/.test(path) && isFileReader){
+			_fileReader(path)
+		} else {
+			_canvas()
+		}
+		// #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) => {
+					console.error('urlToBase64 error:', JSON.stringify(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) => {
+					console.error('pathToBase64 error:', JSON.stringify(error))
+		            reject(error)
+		        }
+		        fileReader.readAsDataURL(file)
+		    }, (error) => {
+				console.error('pathToBase64 error:', JSON.stringify(error))
+		        reject(error)
+		    })
+		}, (error) => {
+			console.error('pathToBase64 error:', JSON.stringify(error))
+		    reject(error)
+		})
+		// #endif
+	})
+}
+
+// #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
+}
+// #endif
+
+export function getImageInfo(img, isH5PathToBase64 = false) {
+	return new Promise(async (resolve, reject) => {
+		// const base64Reg = /^data:image\/(\w+);base64/
+		const localReg = /^\.|^\/(?=[^\/])/;
+		// #ifdef H5
+		if(networkReg.test(img) && isH5PathToBase64) {
+			img = await pathToBase64(img)
+		}
+		// #endif
+		// #ifndef MP-ALIPAY 
+		if(isBase64(img)) {
+			
+			if(isDev || !cache[img]) {
+				const imgName = img
+				img = await base64ToPath(img)
+				cache[imgName] = img
+			} else {
+				img = cache[img]
+			}
+		}
+		// #endif
+		if(cache[img] && cache[img].errMsg) {
+			resolve(cache[img])
+		} else {
+			uni.getImageInfo({
+				src: img,
+				success: (image) => {
+					// #ifdef MP-WEIXIN || MP-BAIDU || MP-QQ || MP-TOUTIAO
+					image.path = localReg.test(img) ?  `/${image.path}` : image.path;
+					// #endif
+					// #ifdef H5
+					image.path = image.path.replace(/^\./, window.location.origin)
+					// #endif
+					image.naturalSrc = img
+					if(isDev) {
+						resolve(image)
+					} else {
+						cache[img] = image
+						resolve(cache[img])
+					}
+				},
+				fail(err) {
+					resolve({path: img})
+					console.error(`getImageInfo:fail ${img} failed ${JSON.stringify(err)}`);
+				}
+			})
+		}
+	})
+}