From 6ce1e37cbd71172d784e70503f02c1932c393305 Mon Sep 17 00:00:00 2001 From: yuantao Date: Fri, 21 Nov 2025 11:13:34 +0800 Subject: [PATCH] =?UTF-8?q?iflow=E6=8F=8F=E8=BF=B0=E6=96=87=E4=BB=B6?= =?UTF-8?q?=E8=B0=83=E4=BC=98?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- IFLOW.md | 139 ++-- wxcomponents/painter/lib/calc.js | 54 ++ wxcomponents/painter/lib/downloader.js | 361 +++++++++++ wxcomponents/painter/lib/gradient.js | 102 +++ wxcomponents/painter/lib/pen.js | 734 +++++++++++++++++++++ wxcomponents/painter/lib/qrcode.js | 784 ++++++++++++++++++++++ wxcomponents/painter/lib/sha1.js | 97 +++ wxcomponents/painter/lib/util.js | 78 +++ wxcomponents/painter/lib/wx-canvas.js | 611 +++++++++++++++++ wxcomponents/painter/painter.js | 864 +++++++++++++++++++++++++ wxcomponents/painter/painter.json | 4 + wxcomponents/painter/painter.wxml | 21 + 12 files changed, 3805 insertions(+), 44 deletions(-) create mode 100644 wxcomponents/painter/lib/calc.js create mode 100644 wxcomponents/painter/lib/downloader.js create mode 100644 wxcomponents/painter/lib/gradient.js create mode 100644 wxcomponents/painter/lib/pen.js create mode 100644 wxcomponents/painter/lib/qrcode.js create mode 100644 wxcomponents/painter/lib/sha1.js create mode 100644 wxcomponents/painter/lib/util.js create mode 100644 wxcomponents/painter/lib/wx-canvas.js create mode 100644 wxcomponents/painter/painter.js create mode 100644 wxcomponents/painter/painter.json create mode 100644 wxcomponents/painter/painter.wxml diff --git a/IFLOW.md b/IFLOW.md index 8092e93..3c0e659 100644 --- a/IFLOW.md +++ b/IFLOW.md @@ -8,23 +8,25 @@ * **Vue3**: 渐进式 JavaScript 框架，用于构建用户界面。 * **uView-Plus**: 基于 UniApp 的 UI 组件库。 * **z-paging**: 一个用于处理分页加载的组件库。 -* **Vuex**: 状态管理库，用于统一管理应用状态（登录状态、用户信息等）。 +* **Vuex**: 状态管理库，用于统一管理应用状态。 +* **Vite**: 现代化构建工具，配置了自定义插件用于manifest.json的appid替换。 +* **luch-request**: 网络请求库，提供请求封装和拦截器功能。 ## 目录结构 ``` . ├── api/ # 接口相关 -│ ├── modules/ # 业务接口 +│ ├── modules/ # 业务接口（目录存在待完善） │ └── request.js # 请求封装 ├── common/ # 公共资源 │ ├── styles/ # 全局样式 -│ │ ├── common.css # codefun原子类样式 -│ │ └── base.scss # 全局样式变量 +│ │ ├── common.css # codefun原子类样式（预留） +│ │ └── base.scss # 全局样式变量（预留） │ └── utils/ # 工具函数 │ └── tool.js # 常用工具函数 -├── components/ # 公共组件 -├── wxcomponents/ # 微信原生组件 +├── components/ # 公共组件（目录存在待完善） +├── wxcomponents/ # 微信原生组件（目录存在待完善） ├── uni_modules/ # uni-app 组件 │ └── z-paging/ # 分页组件库 ├── lib/ # 第三方库 @@ -33,54 +35,71 @@ ├── mixins/ # Vue 混入 │ └── global.js # 全局混入 ├── pages/ # 主包页面 +│ └── index/ # 首页 +├── subPages/ # 分包页面 +│ └── welcome/ # 欢迎页 ├── static/ # 静态资源文件 │ └── assets/ # 静态图片资源 ├── store/ # 状态管理 -├── subPages/ # 分包页面 -├── uni_modules/ # uni-app 组件 -│ └── z-paging/ # 分页组件库 -├── uview-plus/ # uView-Plus 组件库 ├── App.vue # 应用入口 ├── main.js # 主入口文件 ├── pages.json # 页面配置 ├── manifest.json # 应用配置 ├── uni.scss # 全局样式变量 ├── vite.config.js # Vite 编译配置 -├── .nvmdrc # Node.js 版本要求 -└── .env # 环境变量 +├── .nvmdrc # Node.js 版本要求 +├── .env # 环境变量 +├── .iflow/ # iFlow CLI 配置 +├── package.json # 项目依赖配置 +└── uni.promisify.adaptor.js # uni-app promise 适配器 ``` -# 开发环境与运行 +## 开发环境与运行 -## 环境要求 +### 环境要求 -* Node.js (版本信息在 `.nvmdrc` 文件中指定，当前为 20.0.0) +* Node.js (版本信息在 `.nvmdrc` 文件中指定，当前为 24.0.1) * npm 或 yarn -## 安装依赖 +### 当前依赖 + +```json +{ + "dependencies": { + "dotenv": "^17.2.2", + "dayjs": "*", + "vue": "^3.5.21" + } +} +``` + +### 安装依赖 ```bash npm install ``` -## 运行项目 +### 运行项目 -由于这是一个 UniApp 项目，通常需要使用 HBuilderX 或其他支持 UniApp 的 IDE 来运行和调试。具体的运行命令取决于你的开发环境。 +由于这是一个 UniApp 项目，通常需要使用 HBuilderX 或其他支持 UniApp 的 IDE 来运行和调试： -## 构建项目 +1. 使用 HBuilderX 打开项目 +2. 选择"运行到小程序模拟器"或"运行到手机或模拟器" +3. 选择微信开发者工具 + +### 构建项目 同样，构建项目也需要使用 HBuilderX 或相应的 CLI 工具。 -# 代码规范与开发约定 +## 代码规范与开发约定 -## 样式 +### 样式 -* 全局样式文件位于 `common/styles/` 目录下，包括 `common.css` 和 `base.scss`。 -* `common.css` 提供了codefun原子类样式，用于快速布局。 -* `base.scss` 提供了SCSS变量和mixins，以及常用的样式类生成器。 -* 样式规范应遵循项目中已有的风格。 +* 全局样式文件位于 `common/styles/` 目录下（目录结构预留，待完善） +* `uni.scss` 提供了全局样式变量 +* 样式规范应遵循项目中已有的风格 -## JavaScript +### JavaScript * 严格遵循ES6规范。 * 遵循JavaScript函数式编程范式。 @@ -98,44 +117,51 @@ npm install * 字符串拼接使用ES6的模板语法。 * JavaScript规范应遵循项目中已有的风格。 -## 静态资源 +### 静态资源 -* 静态资源变量 `ASSETSURL` 已进行全局混入，可以在 `` 中直接使用。 +* 静态资源变量 `ASSETSURL` 已进行全局混入（通过mixins/global.js），可以在 `` 中直接使用。 * 所有静态资源URL应该使用 `ASSETSURL` 进行拼接，使用方式为：`${ASSETSURL}simple.png`、`background-image: url($ASSETSURL + 'b23bbf0c4c8e59f88f8fd883cb5d6b27.png')`。 -## 工具函数 (tool.js) +### 工具函数 (tool.js) `common/utils/tool.js` 文件提供了一系列常用的工具函数： * **提示与加载**: `alert`, `loading`, `hideLoading` * **页面跳转**: `navigateTo`, `redirectTo`, `reLaunch`, `switchTab`, `navigateBack` * **本地存储**: `storage`, `removeStorage`, `getStorageInfo` -* **其他功能**: `copy` (复制文本), `saveImageToPhotos` (保存图片), `requestPayment` (微信支付), `upload` (文件上传), `loadFont` (加载字体) +* **其他功能**: + * `copy` - 复制文本到剪贴板 + * `saveImageToPhotos` - 保存图片到相册 + * `requestPayment` - 微信支付 + * `upload` - 文件上传 + * `loadFont` - 加载字体 -## 网络请求 +### 网络请求 * 网络请求使用 `lib/luch-request` 库进行封装。 * 全局配置在 `api/request.js` 中定义，包括基础URL、请求头、SSL验证等。 * 包含请求和响应拦截器，用于处理通用逻辑（如错误提示、鉴权等）。 +* 基础URL通过环境变量 `VITE_BASE_URL` 配置。 * 各业务板块的接口都应存放在 `api/modules` 下，并将单个接口进行导出以便页面按需导入。 -## 状态管理 (Vuex) +### 状态管理 (Vuex) * 项目集成了Vuex进行全局状态管理。 * 状态管理文件位于 `store/index.js`。 -* 使用 `useStore` 钩子在组件中访问状态。 +* 使用 `createStore` 创建store实例。 +* 目前处于基础状态，包含空的state、mutations、actions和getters。 -## 组件 +### 组件 * 项目集成了 `uView-Plus` 和 `z-paging` 两个组件库。 * 所有 `uni_modules` 目录中的组件无需导入直接可以进行使用。 * `uView-Plus` 组件已通过 `easycom` 自动导入，可以直接使用，如：``、``。 -* 全局组件放在 `components/` 目录下。 +* 全局组件放在 `components/` 目录下（目录存在待完善）。 * 页面独立组件放在页面根目录下的 `components/`。 -* 微信的原生组件放在页面根目录下的 `wxcomponents/`，并在使用了组件的对应页面路由配置中添加组件的引用属性 `"usingComponents": { "components": "/wxcomponents/components/components" }`。 +* 微信的原生组件放在页面根目录下的 `wxcomponents/`。 * 组件编写应遵循项目中已有的风格。 -## 分页功能 +### 分页功能 * 项目使用 `z-paging` 组件实现分页功能。 * 分页组件通过 `v-model` 绑定数据，并使用 `@query` 事件处理数据查询。 @@ -143,14 +169,38 @@ npm install * 通过 `paging.value?.reload()` 触发分页组件重新加载数据。 * 通过 `paging.value?.complete()` 通知分页组件数据加载完成。 -## 页面 +### 页面 * 页面配置在 `pages.json` 中管理。 -* 主包页面放在 `pages/` 目录下，分包页面放在 `subPages/` 目录下，如果页面不属于一级页面且没有包含在 `pages.json` 中的 `tabbar`，则应该放置在分包目录下。 +* 主包页面放在 `pages/` 目录下，分包页面放在 `subPages/` 目录下。 * 页面使用 Composition API (setup语法糖) 编写。 * 注释、结构规范应遵循项目中已有的风格。 -## 代码提交规范 +### Vite 配置 + +* `vite.config.js` 包含了自定义插件用于在编译时替换 `manifest.json` 中的 appid +* 仅在首次编译时执行，避免热重载时重复执行导致内存占用高 +* 支持环境变量配置： + * `VITE_APPID` - 微信小程序APPID + * `VITE_UNI_APPID` - uni-app APPID + * `VITE_LIBVERSION` - 微信小程序基础库版本 + +### 环境配置 + +* 项目使用环境变量管理不同环境的配置，通过 `.env` 文件配置： + * `VITE_BASE_URL` - 接口地址 + * `VITE_ASSETSURL` - 资源地址 + * `VITE_APPID` - 小程序APPID + * `VITE_UNI_APPID` - UNI-APPID + * `VITE_LIBVERSION` - 微信小程序基础库版本 + +### 全局配置 + +* `main.js` 中配置了 `uni.$zp` 全局配置： + * `'empty-view-text'` - 空数据提示文字 + * `'refresher-enabled'` - 是否启用下拉刷新 + +### 代码提交规范 * 提交信息应清晰描述变更内容，如 `修复 搜索功能空值检查` 或 `新增 删除按钮功能`。 * 对于功能性的新增或修改，使用 `新增` 前缀。 @@ -159,8 +209,9 @@ npm install * 对于文档更新，使用 `文档` 前缀。 * 提交信息应使用中文。 -## 其他 +### 其他 -* 页面中的分享功能应该使用原生的微信分享功能，通过 `button` 或 `` 组件的 `open-type="share"` 属性实现。 -* 项目使用环境变量管理不同环境的配置，通过 `.env` 文件配置。 -* Vite配置文件 `vite.config.js` 包含了自定义插件用于在编译时替换 `manifest.json` 中的 appid。 \ No newline at end of file +* 项目中的分享功能应该使用微信原生的分享功能，通过 `button` 或 `u-button` 组件的 `open-type="share"` 属性实现。 +* 项目中的头像编辑和获取功能应该使用微信原生获取头像昵称的开放能力，通过 `button` 或 `u-button` 组件的 `open-type="chooseAvatar"` 属性和其触发的 `@chooseavatar` 事件实现。 +* 项目中的昵称编辑和获取功能应该使用微信原生获取头像昵称的开放能力，通过 `input` 或 `u-input` 组件的 `open-type="nickname"` 属性实现。 +* 项目集成了promise适配器 `uni.promisify.adaptor.js`，用于统一处理异步操作。 \ No newline at end of file diff --git a/wxcomponents/painter/lib/calc.js b/wxcomponents/painter/lib/calc.js new file mode 100644 index 0000000..e6788de --- /dev/null +++ b/wxcomponents/painter/lib/calc.js @@ -0,0 +1,54 @@ +/* eslint-disable */ +// 四则运算 + +!(function () { + var calculate = function (s) { + s = s.trim(); + const stack = new Array(); + let preSign = '+'; + let numStr = ''; + const n = s.length; + for (let i = 0; i < n; ++i) { + if (s[i] === '.' || (!isNaN(Number(s[i])) && s[i] !== ' ')) { + numStr += s[i]; + } else if (s[i] === '(') { + let isClose = 1; + let j = i; + while (isClose > 0) { + j += 1; + if (s[j] === '(') isClose += 1; + if (s[j] === ')') isClose -= 1; + } + numStr = `${calculate(s.slice(i + 1, j))}`; + i = j; + } + if ((isNaN(Number(s[i])) && s[i] !== '.') || i === n - 1) { + let num = parseFloat(numStr); + switch (preSign) { + case '+': + stack.push(num); + break; + case '-': + stack.push(-num); + break; + case '*': + stack.push(stack.pop() * num); + break; + case '/': + stack.push(stack.pop() / num); + break; + default: + break; + } + preSign = s[i]; + numStr = ''; + } + } + let ans = 0; + while (stack.length) { + ans += stack.pop(); + } + return ans; + }; + module.exports = calculate; +})(); diff --git a/wxcomponents/painter/lib/downloader.js b/wxcomponents/painter/lib/downloader.js new file mode 100644 index 0000000..a093e2e --- /dev/null +++ b/wxcomponents/painter/lib/downloader.js @@ -0,0 +1,361 @@ +/** + * LRU 文件存储，使用该 downloader 可以让下载的文件存储在本地，下次进入小程序后可以直接使用 + * 详细设计文档可查看 https://juejin.im/post/5b42d3ede51d4519277b6ce3 + */ +const util = require('./util'); +const sha1 = require('./sha1'); + +const SAVED_FILES_KEY = 'savedFiles'; +const KEY_TOTAL_SIZE = 'totalSize'; +const KEY_PATH = 'path'; +const KEY_TIME = 'time'; +const KEY_SIZE = 'size'; + +// 可存储总共为 6M，目前小程序可允许的最大本地存储为 10M +let MAX_SPACE_IN_B = 6 * 1024 * 1024; +let savedFiles = {}; + +export default class Dowloader { + constructor() { + // app 如果设置了最大存储空间，则使用 app 中的 + if (getApp().PAINTER_MAX_LRU_SPACE) { + MAX_SPACE_IN_B = getApp().PAINTER_MAX_LRU_SPACE; + } + wx.getStorage({ + key: SAVED_FILES_KEY, + success: function (res) { + if (res.data) { + savedFiles = res.data; + } + }, + }); + } + + /** + * 下载文件，会用 lru 方式来缓存文件到本地 + * @param {String} url 文件的 url + */ + download(url, lru) { + return new Promise((resolve, reject) => { + if (!(url && util.isValidUrl(url))) { + resolve(url); + return; + } + const fileName = getFileName(url); + if (!lru) { + // 无 lru 情况下直接判断 临时文件是否存在，不存在重新下载 + wx.getFileInfo({ + filePath: fileName, + success: () => { + resolve(url); + }, + fail: () => { + if (util.isOnlineUrl(url)) { + downloadFile(url, lru).then((path) => { + resolve(path); + }, () => { + reject(); + }); + } else if (util.isDataUrl(url)) { + transformBase64File(url, lru).then(path => { + resolve(path); + }, () => { + reject(); + }); + } + }, + }) + return + } + + const file = getFile(fileName); + + if (file) { + if (file[KEY_PATH].indexOf('//usr/') !== -1) { + wx.getFileInfo({ + filePath: file[KEY_PATH], + success() { + resolve(file[KEY_PATH]); + }, + fail(error) { + console.error(`base64 file broken, ${JSON.stringify(error)}`); + transformBase64File(url, lru).then(path => { + resolve(path); + }, () => { + reject(); + }); + } + }) + } else { + // 检查文件是否正常，不正常需要重新下载 + wx.getSavedFileInfo({ + filePath: file[KEY_PATH], + success: (res) => { + resolve(file[KEY_PATH]); + }, + fail: (error) => { + console.error(`the file is broken, redownload it, ${JSON.stringify(error)}`); + downloadFile(url, lru).then((path) => { + resolve(path); + }, () => { + reject(); + }); + }, + }); + } + } else { + if (util.isOnlineUrl(url)) { + downloadFile(url, lru).then((path) => { + resolve(path); + }, () => { + reject(); + }); + } else if (util.isDataUrl(url)) { + transformBase64File(url, lru).then(path => { + resolve(path); + }, () => { + reject(); + }); + } + } + }); + } +} + +function getFileName(url) { + if (util.isDataUrl(url)) { + const [, format, bodyData] = /data:image\/(\w+);base64,(.*)/.exec(url) || []; + const fileName = `${sha1.hex_sha1(bodyData)}.${format}`; + return fileName; + } else { + return url; + } +} + +function transformBase64File(base64data, lru) { + return new Promise((resolve, reject) => { + const [, format, bodyData] = /data:image\/(\w+);base64,(.*)/.exec(base64data) || []; + if (!format) { + console.error('base parse failed'); + reject(); + return; + } + const fileName = `${sha1.hex_sha1(bodyData)}.${format}`; + const path = `${wx.env.USER_DATA_PATH}/${fileName}`; + const buffer = wx.base64ToArrayBuffer(bodyData.replace(/[\r\n]/g, "")); + wx.getFileSystemManager().writeFile({ + filePath: path, + data: buffer, + encoding: 'binary', + success() { + wx.getFileInfo({ + filePath: path, + success: (tmpRes) => { + const newFileSize = tmpRes.size; + lru ? doLru(newFileSize).then(() => { + saveFile(fileName, newFileSize, path, true).then((filePath) => { + resolve(filePath); + }); + }, () => { + resolve(path); + }) : resolve(path); + }, + fail: (error) => { + // 文件大小信息获取失败，则此文件也不要进行存储 + console.error(`getFileInfo ${path} failed, ${JSON.stringify(error)}`); + resolve(path); + }, + }); + }, + fail(err) { + console.log(err) + } + }) + }); +} + +function downloadFile(url, lru) { + return new Promise((resolve, reject) => { + wx.downloadFile({ + url: url, + success: function (res) { + if (res.statusCode !== 200) { + console.error(`downloadFile ${url} failed res.statusCode is not 200`); + reject(); + return; + } + const { + tempFilePath + } = res; + wx.getFileInfo({ + filePath: tempFilePath, + success: (tmpRes) => { + const newFileSize = tmpRes.size; + lru ? doLru(newFileSize).then(() => { + saveFile(url, newFileSize, tempFilePath).then((filePath) => { + resolve(filePath); + }); + }, () => { + resolve(tempFilePath); + }) : resolve(tempFilePath); + }, + fail: (error) => { + // 文件大小信息获取失败，则此文件也不要进行存储 + console.error(`getFileInfo ${res.tempFilePath} failed, ${JSON.stringify(error)}`); + resolve(res.tempFilePath); + }, + }); + }, + fail: function (error) { + console.error(`downloadFile failed, ${JSON.stringify(error)} `); + reject(); + }, + }); + }); +} + +function saveFile(key, newFileSize, tempFilePath, isDataUrl = false) { + return new Promise((resolve, reject) => { + if (isDataUrl) { + const totalSize = savedFiles[KEY_TOTAL_SIZE] ? savedFiles[KEY_TOTAL_SIZE] : 0; + savedFiles[key] = {}; + savedFiles[key][KEY_PATH] = tempFilePath; + savedFiles[key][KEY_TIME] = new Date().getTime(); + savedFiles[key][KEY_SIZE] = newFileSize; + savedFiles['totalSize'] = newFileSize + totalSize; + wx.setStorage({ + key: SAVED_FILES_KEY, + data: savedFiles, + }); + resolve(tempFilePath); + return; + } + wx.saveFile({ + tempFilePath: tempFilePath, + success: (fileRes) => { + const totalSize = savedFiles[KEY_TOTAL_SIZE] ? savedFiles[KEY_TOTAL_SIZE] : 0; + savedFiles[key] = {}; + savedFiles[key][KEY_PATH] = fileRes.savedFilePath; + savedFiles[key][KEY_TIME] = new Date().getTime(); + savedFiles[key][KEY_SIZE] = newFileSize; + savedFiles['totalSize'] = newFileSize + totalSize; + wx.setStorage({ + key: SAVED_FILES_KEY, + data: savedFiles, + }); + resolve(fileRes.savedFilePath); + }, + fail: (error) => { + console.error(`saveFile ${key} failed, then we delete all files, ${JSON.stringify(error)}`); + // 由于 saveFile 成功后，res.tempFilePath 处的文件会被移除，所以在存储未成功时，我们还是继续使用临时文件 + resolve(tempFilePath); + // 如果出现错误，就直接情况本地的所有文件，因为你不知道是不是因为哪次lru的某个文件未删除成功 + reset(); + }, + }); + }); +} + +/** + * 清空所有下载相关内容 + */ +function reset() { + wx.removeStorage({ + key: SAVED_FILES_KEY, + success: () => { + wx.getSavedFileList({ + success: (listRes) => { + removeFiles(listRes.fileList); + }, + fail: (getError) => { + console.error(`getSavedFileList failed, ${JSON.stringify(getError)}`); + }, + }); + }, + }); +} + +function doLru(size) { + if (size > MAX_SPACE_IN_B) { + return Promise.reject() + } + return new Promise((resolve, reject) => { + let totalSize = savedFiles[KEY_TOTAL_SIZE] ? savedFiles[KEY_TOTAL_SIZE] : 0; + + if (size + totalSize <= MAX_SPACE_IN_B) { + resolve(); + return; + } + // 如果加上新文件后大小超过最大限制，则进行 lru + const pathsShouldDelete = []; + // 按照最后一次的访问时间，从小到大排序 + const allFiles = JSON.parse(JSON.stringify(savedFiles)); + delete allFiles[KEY_TOTAL_SIZE]; + const sortedKeys = Object.keys(allFiles).sort((a, b) => { + return allFiles[a][KEY_TIME] - allFiles[b][KEY_TIME]; + }); + + for (const sortedKey of sortedKeys) { + totalSize -= savedFiles[sortedKey].size; + pathsShouldDelete.push(savedFiles[sortedKey][KEY_PATH]); + delete savedFiles[sortedKey]; + if (totalSize + size < MAX_SPACE_IN_B) { + break; + } + } + + savedFiles['totalSize'] = totalSize; + + wx.setStorage({ + key: SAVED_FILES_KEY, + data: savedFiles, + success: () => { + // 保证 storage 中不会存在不存在的文件数据 + if (pathsShouldDelete.length > 0) { + removeFiles(pathsShouldDelete); + } + resolve(); + }, + fail: (error) => { + console.error(`doLru setStorage failed, ${JSON.stringify(error)}`); + reject(); + }, + }); + }); +} + +function removeFiles(pathsShouldDelete) { + for (const pathDel of pathsShouldDelete) { + let delPath = pathDel; + if (typeof pathDel === 'object') { + delPath = pathDel.filePath; + } + if (delPath.indexOf('//usr/') !== -1) { + wx.getFileSystemManager().unlink({ + filePath: delPath, + fail(error) { + console.error(`removeSavedFile ${pathDel} failed, ${JSON.stringify(error)}`); + } + }) + } else { + wx.removeSavedFile({ + filePath: delPath, + fail: (error) => { + console.error(`removeSavedFile ${pathDel} failed, ${JSON.stringify(error)}`); + }, + }); + } + } +} + +function getFile(key) { + if (!savedFiles[key]) { + return; + } + savedFiles[key]['time'] = new Date().getTime(); + wx.setStorage({ + key: SAVED_FILES_KEY, + data: savedFiles, + }); + return savedFiles[key]; +} \ No newline at end of file diff --git a/wxcomponents/painter/lib/gradient.js b/wxcomponents/painter/lib/gradient.js new file mode 100644 index 0000000..13c7258 --- /dev/null +++ b/wxcomponents/painter/lib/gradient.js @@ -0,0 +1,102 @@ +/* eslint-disable */ +// 当ctx传入当前文件，const grd = ctx.createCircularGradient() 和 +// const grd = this.ctx.createLinearGradient() 无效，因此只能分开处理 +// 先分析，在外部创建grd，再传入使用就可以 + +!(function () { + + var api = { + isGradient: function(bg) { + if (bg && (bg.startsWith('linear') || bg.startsWith('radial'))) { + return true; + } + return false; + }, + + doGradient: function(bg, width, height, ctx) { + if (bg.startsWith('linear')) { + linearEffect(width, height, bg, ctx); + } else if (bg.startsWith('radial')) { + radialEffect(width, height, bg, ctx); + } + }, + } + + function analizeGrad(string) { + const colorPercents = string.substring(0, string.length - 1).split("%,"); + const colors = []; + const percents = []; + for (let colorPercent of colorPercents) { + colors.push(colorPercent.substring(0, colorPercent.lastIndexOf(" ")).trim()); + percents.push(colorPercent.substring(colorPercent.lastIndexOf(" "), colorPercent.length) / 100); + } + return {colors: colors, percents: percents}; + } + + function radialEffect(width, height, bg, ctx) { + const colorPer = analizeGrad(bg.match(/radial-gradient\((.+)\)/)[1]); + const grd = ctx.createRadialGradient(0, 0, 0, 0, 0, width < height ? height / 2 : width / 2); + for (let i = 0; i < colorPer.colors.length; i++) { + grd.addColorStop(colorPer.percents[i], colorPer.colors[i]); + } + ctx.fillStyle = grd; + //ctx.fillRect(-(width / 2), -(height / 2), width, height); + } + + function analizeLinear(bg, width, height) { + const direction = bg.match(/([-]?\d{1,3})deg/); + const dir = direction && direction[1] ? parseFloat(direction[1]) : 0; + let coordinate; + switch (dir) { + case 0: coordinate = [0, -height / 2, 0, height / 2]; break; + case 90: coordinate = [width / 2, 0, -width / 2, 0]; break; + case -90: coordinate = [-width / 2, 0, width / 2, 0]; break; + case 180: coordinate = [0, height / 2, 0, -height / 2]; break; + case -180: coordinate = [0, -height / 2, 0, height / 2]; break; + default: + let x1 = 0; + let y1 = 0; + let x2 = 0; + let y2 = 0; + if (direction[1] > 0 && direction[1] < 90) { + x1 = (width / 2) - ((width / 2) * Math.tan((90 - direction[1]) * Math.PI * 2 / 360) - height / 2) * Math.sin(2 * (90 - direction[1]) * Math.PI * 2 / 360) / 2; + y2 = Math.tan((90 - direction[1]) * Math.PI * 2 / 360) * x1; + x2 = -x1; + y1 = -y2; + } else if (direction[1] > -180 && direction[1] < -90) { + x1 = -(width / 2) + ((width / 2) * Math.tan((90 - direction[1]) * Math.PI * 2 / 360) - height / 2) * Math.sin(2 * (90 - direction[1]) * Math.PI * 2 / 360) / 2; + y2 = Math.tan((90 - direction[1]) * Math.PI * 2 / 360) * x1; + x2 = -x1; + y1 = -y2; + } else if (direction[1] > 90 && direction[1] < 180) { + x1 = (width / 2) + (-(width / 2) * Math.tan((90 - direction[1]) * Math.PI * 2 / 360) - height / 2) * Math.sin(2 * (90 - direction[1]) * Math.PI * 2 / 360) / 2; + y2 = Math.tan((90 - direction[1]) * Math.PI * 2 / 360) * x1; + x2 = -x1; + y1 = -y2; + } else { + x1 = -(width / 2) - (-(width / 2) * Math.tan((90 - direction[1]) * Math.PI * 2 / 360) - height / 2) * Math.sin(2 * (90 - direction[1]) * Math.PI * 2 / 360) / 2; + y2 = Math.tan((90 - direction[1]) * Math.PI * 2 / 360) * x1; + x2 = -x1; + y1 = -y2; + } + coordinate = [x1, y1, x2, y2]; + break; + } + return coordinate; + } + + function linearEffect(width, height, bg, ctx) { + const param = analizeLinear(bg, width, height); + const grd = ctx.createLinearGradient(param[0], param[1], param[2], param[3]); + const content = bg.match(/linear-gradient\((.+)\)/)[1]; + const colorPer = analizeGrad(content.substring(content.indexOf(',') + 1)); + for (let i = 0; i < colorPer.colors.length; i++) { + grd.addColorStop(colorPer.percents[i], colorPer.colors[i]); + } + ctx.fillStyle = grd + //ctx.fillRect(-(width / 2), -(height / 2), width, height); + } + + module.exports = { api } + +})(); diff --git a/wxcomponents/painter/lib/pen.js b/wxcomponents/painter/lib/pen.js new file mode 100644 index 0000000..f702c8b --- /dev/null +++ b/wxcomponents/painter/lib/pen.js @@ -0,0 +1,734 @@ +const QR = require('./qrcode.js'); +const GD = require('./gradient.js'); + +export const penCache = { + // 用于存储带 id 的 view 的 rect 信息 + viewRect: {}, + textLines: {}, +}; +export const clearPenCache = id => { + if (id) { + penCache.viewRect[id] = null; + penCache.textLines[id] = null; + } else { + penCache.viewRect = {}; + penCache.textLines = {}; + } +}; +export default class Painter { + constructor(ctx, data) { + this.ctx = ctx; + this.data = data; + } + + paint(callback) { + this.style = { + width: this.data.width.toPx(), + height: this.data.height.toPx(), + }; + + this._background(); + for (const view of this.data.views) { + this._drawAbsolute(view); + } + this.ctx.draw(false, () => { + callback && callback(); + }); + } + + _background() { + this.ctx.save(); + const { width, height } = this.style; + const bg = this.data.background; + this.ctx.translate(width / 2, height / 2); + + this._doClip(this.data.borderRadius, width, height); + if (!bg) { + // 如果未设置背景，则默认使用透明色 + this.ctx.fillStyle = 'transparent'; + this.ctx.fillRect(-(width / 2), -(height / 2), width, height); + } else if (bg.startsWith('#') || bg.startsWith('rgba') || bg.toLowerCase() === 'transparent') { + // 背景填充颜色 + this.ctx.fillStyle = bg; + this.ctx.fillRect(-(width / 2), -(height / 2), width, height); + } else if (GD.api.isGradient(bg)) { + GD.api.doGradient(bg, width, height, this.ctx); + this.ctx.fillRect(-(width / 2), -(height / 2), width, height); + } else { + // 背景填充图片 + this.ctx.drawImage(bg, -(width / 2), -(height / 2), width, height); + } + this.ctx.restore(); + } + + _drawAbsolute(view) { + if (!(view && view.type)) { + // 过滤无效 view + return; + } + // 证明 css 为数组形式，需要合并 + if (view.css && view.css.length) { + /* eslint-disable no-param-reassign */ + view.css = Object.assign(...view.css); + } + switch (view.type) { + case 'image': + this._drawAbsImage(view); + break; + case 'text': + this._fillAbsText(view); + break; + case 'rect': + this._drawAbsRect(view); + break; + case 'qrcode': + this._drawQRCode(view); + break; + default: + break; + } + } + + _border({ borderRadius = 0, width, height, borderWidth = 0, borderStyle = 'solid' }) { + let r1 = 0, + r2 = 0, + r3 = 0, + r4 = 0; + const minSize = Math.min(width, height); + if (borderRadius) { + const border = borderRadius.split(/\s+/); + if (border.length === 4) { + r1 = Math.min(border[0].toPx(false, minSize), width / 2, height / 2); + r2 = Math.min(border[1].toPx(false, minSize), width / 2, height / 2); + r3 = Math.min(border[2].toPx(false, minSize), width / 2, height / 2); + r4 = Math.min(border[3].toPx(false, minSize), width / 2, height / 2); + } else { + r1 = r2 = r3 = r4 = Math.min(borderRadius && borderRadius.toPx(false, minSize), width / 2, height / 2); + } + } + const lineWidth = borderWidth && borderWidth.toPx(false, minSize); + this.ctx.lineWidth = lineWidth; + if (borderStyle === 'dashed') { + this.ctx.setLineDash([(lineWidth * 4) / 3, (lineWidth * 4) / 3]); + // this.ctx.lineDashOffset = 2 * lineWidth + } else if (borderStyle === 'dotted') { + this.ctx.setLineDash([lineWidth, lineWidth]); + } + const notSolid = borderStyle !== 'solid'; + this.ctx.beginPath(); + + notSolid && r1 === 0 && this.ctx.moveTo(-width / 2 - lineWidth, -height / 2 - lineWidth / 2); // 顶边虚线规避重叠规则 + r1 !== 0 && this.ctx.arc(-width / 2 + r1, -height / 2 + r1, r1 + lineWidth / 2, 1 * Math.PI, 1.5 * Math.PI); //左上角圆弧 + this.ctx.lineTo( + r2 === 0 ? (notSolid ? width / 2 : width / 2 + lineWidth / 2) : width / 2 - r2, + -height / 2 - lineWidth / 2, + ); // 顶边线 + + notSolid && r2 === 0 && this.ctx.moveTo(width / 2 + lineWidth / 2, -height / 2 - lineWidth); // 右边虚线规避重叠规则 + r2 !== 0 && this.ctx.arc(width / 2 - r2, -height / 2 + r2, r2 + lineWidth / 2, 1.5 * Math.PI, 2 * Math.PI); // 右上角圆弧 + this.ctx.lineTo( + width / 2 + lineWidth / 2, + r3 === 0 ? (notSolid ? height / 2 : height / 2 + lineWidth / 2) : height / 2 - r3, + ); // 右边线 + + notSolid && r3 === 0 && this.ctx.moveTo(width / 2 + lineWidth, height / 2 + lineWidth / 2); // 底边虚线规避重叠规则 + r3 !== 0 && this.ctx.arc(width / 2 - r3, height / 2 - r3, r3 + lineWidth / 2, 0, 0.5 * Math.PI); // 右下角圆弧 + this.ctx.lineTo( + r4 === 0 ? (notSolid ? -width / 2 : -width / 2 - lineWidth / 2) : -width / 2 + r4, + height / 2 + lineWidth / 2, + ); // 底边线 + + notSolid && r4 === 0 && this.ctx.moveTo(-width / 2 - lineWidth / 2, height / 2 + lineWidth); // 左边虚线规避重叠规则 + r4 !== 0 && this.ctx.arc(-width / 2 + r4, height / 2 - r4, r4 + lineWidth / 2, 0.5 * Math.PI, 1 * Math.PI); // 左下角圆弧 + this.ctx.lineTo( + -width / 2 - lineWidth / 2, + r1 === 0 ? (notSolid ? -height / 2 : -height / 2 - lineWidth / 2) : -height / 2 + r1, + ); // 左边线 + notSolid && r1 === 0 && this.ctx.moveTo(-width / 2 - lineWidth, -height / 2 - lineWidth / 2); // 顶边虚线规避重叠规则 + + if (!notSolid) { + this.ctx.closePath(); + } + } + + /** + * 根据 borderRadius 进行裁减 + */ + _doClip(borderRadius, width, height, borderStyle) { + if (borderRadius && width && height) { + // 防止在某些机型上周边有黑框现象，此处如果直接设置 fillStyle 为透明，在 Android 机型上会导致被裁减的图片也变为透明， iOS 和 IDE 上不会 + // globalAlpha 在 1.9.90 起支持，低版本下无效，但把 fillStyle 设为了 white，相对默认的 black 要好点 + this.ctx.globalAlpha = 0; + this.ctx.fillStyle = 'white'; + this._border({ + borderRadius, + width, + height, + borderStyle, + }); + this.ctx.fill(); + // 在 ios 的 6.6.6 版本上 clip 有 bug，禁掉此类型上的 clip，也就意味着，在此版本微信的 ios 设备下无法使用 border 属性 + if (!(getApp().systemInfo && getApp().systemInfo.version <= '6.6.6' && getApp().systemInfo.platform === 'ios')) { + this.ctx.clip(); + } + this.ctx.globalAlpha = 1; + } + } + + /** + * 画边框 + */ + _doBorder(view, width, height) { + if (!view.css) { + return; + } + const { borderRadius, borderWidth, borderColor, borderStyle } = view.css; + if (!borderWidth) { + return; + } + this.ctx.save(); + this._preProcess(view, true); + this.ctx.strokeStyle = borderColor || 'black'; + this._border({ + borderRadius, + width, + height, + borderWidth, + borderStyle, + }); + this.ctx.stroke(); + this.ctx.restore(); + } + + _preProcess(view, notClip) { + let width = 0; + let height; + let extra; + const paddings = this._doPaddings(view); + switch (view.type) { + case 'text': { + const textArray = String(view.text).split('\n'); + // 处理多个连续的'\n' + for (let i = 0; i < textArray.length; ++i) { + if (textArray[i] === '') { + textArray[i] = ' '; + } + } + const fontWeight = view.css.fontWeight || '400'; + const textStyle = view.css.textStyle || 'normal'; + if (!view.css.fontSize) { + view.css.fontSize = '20rpx'; + } + this.ctx.font = `${textStyle} ${fontWeight} ${view.css.fontSize.toPx()}px "${ + view.css.fontFamily || 'sans-serif' + }"`; + // 计算行数 + let lines = 0; + const linesArray = []; + for (let i = 0; i < textArray.length; ++i) { + const textLength = this.ctx.measureText(textArray[i]).width; + const minWidth = view.css.fontSize.toPx() + paddings[1] + paddings[3]; + let partWidth = view.css.width + ? view.css.width.toPx(false, this.style.width) - paddings[1] - paddings[3] + : textLength; + if (partWidth < minWidth) { + partWidth = minWidth; + } + const calLines = Math.ceil(textLength / partWidth); + // 取最长的作为 width + width = partWidth > width ? partWidth : width; + lines += calLines; + linesArray[i] = calLines; + } + lines = view.css.maxLines < lines ? view.css.maxLines : lines; + const lineHeight = view.css.lineHeight ? view.css.lineHeight.toPx() : view.css.fontSize.toPx(); + height = lineHeight * lines; + extra = { + lines: lines, + lineHeight: lineHeight, + textArray: textArray, + linesArray: linesArray, + }; + break; + } + case 'image': { + // image的长宽设置成auto的逻辑处理 + const ratio = getApp().systemInfo.pixelRatio ? getApp().systemInfo.pixelRatio : 2; + // 有css却未设置width或height，则默认为auto + if (view.css) { + if (!view.css.width) { + view.css.width = 'auto'; + } + if (!view.css.height) { + view.css.height = 'auto'; + } + } + if (!view.css || (view.css.width === 'auto' && view.css.height === 'auto')) { + width = Math.round(view.sWidth / ratio); + height = Math.round(view.sHeight / ratio); + } else if (view.css.width === 'auto') { + height = view.css.height.toPx(false, this.style.height); + width = (view.sWidth / view.sHeight) * height; + } else if (view.css.height === 'auto') { + width = view.css.width.toPx(false, this.style.width); + height = (view.sHeight / view.sWidth) * width; + } else { + width = view.css.width.toPx(false, this.style.width); + height = view.css.height.toPx(false, this.style.height); + } + break; + } + default: + if (!(view.css.width && view.css.height)) { + console.error('You should set width and height'); + return; + } + width = view.css.width.toPx(false, this.style.width); + height = view.css.height.toPx(false, this.style.height); + break; + } + let x; + if (view.css && view.css.right) { + if (typeof view.css.right === 'string') { + x = this.style.width - view.css.right.toPx(true, this.style.width); + } else { + // 可以用数组方式，把文字长度计算进去 + // [right, 文字id, 乘数（默认 1）] + const rights = view.css.right; + x = + this.style.width - + rights[0].toPx(true, this.style.width) - + penCache.viewRect[rights[1]].width * (rights[2] || 1); + } + } else if (view.css && view.css.left) { + if (typeof view.css.left === 'string') { + x = view.css.left.toPx(true, this.style.width); + } else { + const lefts = view.css.left; + x = lefts[0].toPx(true, this.style.width) + penCache.viewRect[lefts[1]].width * (lefts[2] || 1); + } + } else { + x = 0; + } + //const y = view.css && view.css.bottom ? this.style.height - height - view.css.bottom.toPx(true) : (view.css && view.css.top ? view.css.top.toPx(true) : 0); + let y; + if (view.css && view.css.bottom) { + y = this.style.height - height - view.css.bottom.toPx(true, this.style.height); + } else { + if (view.css && view.css.top) { + if (typeof view.css.top === 'string') { + y = view.css.top.toPx(true, this.style.height); + } else { + const tops = view.css.top; + y = tops[0].toPx(true, this.style.height) + penCache.viewRect[tops[1]].height * (tops[2] || 1); + } + } else { + y = 0; + } + } + + const angle = view.css && view.css.rotate ? this._getAngle(view.css.rotate) : 0; + // 当设置了 right 时，默认 align 用 right，反之用 left + const align = view.css && view.css.align ? view.css.align : view.css && view.css.right ? 'right' : 'left'; + const verticalAlign = view.css && view.css.verticalAlign ? view.css.verticalAlign : 'top'; + // 记录绘制时的画布 + let xa = 0; + switch (align) { + case 'center': + xa = x; + break; + case 'right': + xa = x - width / 2; + break; + default: + xa = x + width / 2; + break; + } + let ya = 0; + switch (verticalAlign) { + case 'center': + ya = y; + break; + case 'bottom': + ya = y - height / 2; + break; + default: + ya = y + height / 2; + break; + } + this.ctx.translate(xa, ya); + // 记录该 view 的有效点击区域 + // TODO ，旋转和裁剪的判断 + // 记录在真实画布上的左侧 + let left = x; + if (align === 'center') { + left = x - width / 2; + } else if (align === 'right') { + left = x - width; + } + var top = y; + if (verticalAlign === 'center') { + top = y - height / 2; + } else if (verticalAlign === 'bottom') { + top = y - height; + } + if (view.rect) { + view.rect.left = left; + view.rect.top = top; + view.rect.right = left + width; + view.rect.bottom = top + height; + view.rect.x = view.css && view.css.right ? x - width : x; + view.rect.y = y; + } else { + view.rect = { + left: left, + top: top, + right: left + width, + bottom: top + height, + x: view.css && view.css.right ? x - width : x, + y: y, + }; + } + + view.rect.left = view.rect.left - paddings[3]; + view.rect.top = view.rect.top - paddings[0]; + view.rect.right = view.rect.right + paddings[1]; + view.rect.bottom = view.rect.bottom + paddings[2]; + if (view.type === 'text') { + view.rect.minWidth = view.css.fontSize.toPx() + paddings[1] + paddings[3]; + } + + this.ctx.rotate(angle); + if (!notClip && view.css && view.css.borderRadius && view.type !== 'rect') { + this._doClip(view.css.borderRadius, width, height, view.css.borderStyle); + } + this._doShadow(view); + if (view.id) { + penCache.viewRect[view.id] = { + width, + height, + left: x, + top: y, + right: x + width, + bottom: y + height, + }; + } + return { + width: width, + height: height, + x: x, + y: y, + extra: extra, + }; + } + + _doPaddings(view) { + const { padding } = view.css ? view.css : {}; + let pd = [0, 0, 0, 0]; + if (padding) { + const pdg = padding.split(/\s+/); + if (pdg.length === 1) { + const x = pdg[0].toPx(); + pd = [x, x, x, x]; + } + if (pdg.length === 2) { + const x = pdg[0].toPx(); + const y = pdg[1].toPx(); + pd = [x, y, x, y]; + } + if (pdg.length === 3) { + const x = pdg[0].toPx(); + const y = pdg[1].toPx(); + const z = pdg[2].toPx(); + pd = [x, y, z, y]; + } + if (pdg.length === 4) { + const x = pdg[0].toPx(); + const y = pdg[1].toPx(); + const z = pdg[2].toPx(); + const a = pdg[3].toPx(); + pd = [x, y, z, a]; + } + } + return pd; + } + + // 画文字的背景图片 + _doBackground(view) { + this.ctx.save(); + const { width: rawWidth, height: rawHeight } = this._preProcess(view, true); + + const { background } = view.css; + let pd = this._doPaddings(view); + const width = rawWidth + pd[1] + pd[3]; + const height = rawHeight + pd[0] + pd[2]; + + this._doClip(view.css.borderRadius, width, height, view.css.borderStyle); + if (GD.api.isGradient(background)) { + GD.api.doGradient(background, width, height, this.ctx); + } else { + this.ctx.fillStyle = background; + } + this.ctx.fillRect(-(width / 2), -(height / 2), width, height); + + this.ctx.restore(); + } + + _drawQRCode(view) { + this.ctx.save(); + const { width, height } = this._preProcess(view); + QR.api.draw(view.content, this.ctx, -width / 2, -height / 2, width, height, view.css.background, view.css.color); + this.ctx.restore(); + this._doBorder(view, width, height); + } + + _drawAbsImage(view) { + if (!view.url) { + return; + } + this.ctx.save(); + const { width, height } = this._preProcess(view); + // 获得缩放到图片大小级别的裁减框 + let rWidth = view.sWidth; + let rHeight = view.sHeight; + let startX = 0; + let startY = 0; + // 绘画区域比例 + const cp = width / height; + // 原图比例 + const op = view.sWidth / view.sHeight; + if (cp >= op) { + rHeight = rWidth / cp; + startY = Math.round((view.sHeight - rHeight) / 2); + } else { + rWidth = rHeight * cp; + startX = Math.round((view.sWidth - rWidth) / 2); + } + if (view.css && view.css.mode === 'scaleToFill') { + this.ctx.drawImage(view.url, -(width / 2), -(height / 2), width, height); + } else { + this.ctx.drawImage(view.url, startX, startY, rWidth, rHeight, -(width / 2), -(height / 2), width, height); + view.rect.startX = startX / view.sWidth; + view.rect.startY = startY / view.sHeight; + view.rect.endX = (startX + rWidth) / view.sWidth; + view.rect.endY = (startY + rHeight) / view.sHeight; + } + this.ctx.restore(); + this._doBorder(view, width, height); + } + + _fillAbsText(view) { + if (!view.text) { + return; + } + if (view.css.background) { + // 生成背景 + this._doBackground(view); + } + this.ctx.save(); + const { width, height, extra } = this._preProcess(view, view.css.background && view.css.borderRadius); + this.ctx.fillStyle = view.css.color || 'black'; + if (view.id && penCache.textLines[view.id]) { + this.ctx.textAlign = view.css.textAlign ? view.css.textAlign : 'left'; + for (const i of penCache.textLines[view.id]) { + const { measuredWith, text, x, y, textDecoration } = i; + if (view.css.textStyle === 'stroke') { + this.ctx.strokeText(text, x, y, measuredWith); + } else { + this.ctx.fillText(text, x, y, measuredWith); + } + if (textDecoration) { + const fontSize = view.css.fontSize.toPx(); + this.ctx.lineWidth = fontSize / 13; + this.ctx.beginPath(); + this.ctx.moveTo(...textDecoration.moveTo); + this.ctx.lineTo(...textDecoration.lineTo); + this.ctx.closePath(); + this.ctx.strokeStyle = view.css.color; + this.ctx.stroke(); + } + } + } else { + const { lines, lineHeight, textArray, linesArray } = extra; + // 如果设置了id，则保留 text 的长度 + if (view.id) { + let textWidth = 0; + for (let i = 0; i < textArray.length; ++i) { + const _w = this.ctx.measureText(textArray[i]).width; + textWidth = _w > textWidth ? _w : textWidth; + } + penCache.viewRect[view.id].width = width ? (textWidth < width ? textWidth : width) : textWidth; + } + let lineIndex = 0; + for (let j = 0; j < textArray.length; ++j) { + const preLineLength = Math.ceil(textArray[j].length / linesArray[j]); + let start = 0; + let alreadyCount = 0; + + for (let i = 0; i < linesArray[j]; ++i) { + // 绘制行数大于最大行数，则直接跳出循环 + if (lineIndex >= lines) { + break; + } + alreadyCount = preLineLength; + let text = textArray[j].substr(start, alreadyCount); + let measuredWith = this.ctx.measureText(text).width; + // 如果测量大小小于width一个字符的大小，则进行补齐，如果测量大小超出 width，则进行减除 + // 如果已经到文本末尾，也不要进行该循环 + while ( + start + alreadyCount <= textArray[j].length && + (width - measuredWith > view.css.fontSize.toPx() || measuredWith - width > view.css.fontSize.toPx()) + ) { + if (measuredWith < width) { + text = textArray[j].substr(start, ++alreadyCount); + } else { + if (text.length <= 1) { + // 如果只有一个字符时，直接跳出循环 + break; + } + text = textArray[j].substr(start, --alreadyCount); + // break; + } + measuredWith = this.ctx.measureText(text).width; + } + start += text.length; + // 如果是最后一行了，发现还有未绘制完的内容，则加... + if (lineIndex === lines - 1 && (j < textArray.length - 1 || start < textArray[j].length)) { + while (this.ctx.measureText(`${text}...`).width > width) { + if (text.length <= 1) { + // 如果只有一个字符时，直接跳出循环 + break; + } + text = text.substring(0, text.length - 1); + } + text += '...'; + measuredWith = this.ctx.measureText(text).width; + } + this.ctx.textAlign = view.css.textAlign ? view.css.textAlign : 'left'; + let x; + let lineX; + switch (view.css.textAlign) { + case 'center': + x = 0; + lineX = x - measuredWith / 2; + break; + case 'right': + x = width / 2; + lineX = x - measuredWith; + break; + default: + x = -(width / 2); + lineX = x; + break; + } + + const y = + -(height / 2) + + (lineIndex === 0 ? view.css.fontSize.toPx() : view.css.fontSize.toPx() + lineIndex * lineHeight); + lineIndex++; + if (view.css.textStyle === 'stroke') { + this.ctx.strokeText(text, x, y, measuredWith); + } else { + this.ctx.fillText(text, x, y, measuredWith); + } + const fontSize = view.css.fontSize.toPx(); + let textDecoration; + if (view.css.textDecoration) { + this.ctx.lineWidth = fontSize / 13; + this.ctx.beginPath(); + if (/\bunderline\b/.test(view.css.textDecoration)) { + this.ctx.moveTo(lineX, y); + this.ctx.lineTo(lineX + measuredWith, y); + textDecoration = { + moveTo: [lineX, y], + lineTo: [lineX + measuredWith, y], + }; + } + if (/\boverline\b/.test(view.css.textDecoration)) { + this.ctx.moveTo(lineX, y - fontSize); + this.ctx.lineTo(lineX + measuredWith, y - fontSize); + textDecoration = { + moveTo: [lineX, y - fontSize], + lineTo: [lineX + measuredWith, y - fontSize], + }; + } + if (/\bline-through\b/.test(view.css.textDecoration)) { + this.ctx.moveTo(lineX, y - fontSize / 3); + this.ctx.lineTo(lineX + measuredWith, y - fontSize / 3); + textDecoration = { + moveTo: [lineX, y - fontSize / 3], + lineTo: [lineX + measuredWith, y - fontSize / 3], + }; + } + this.ctx.closePath(); + this.ctx.strokeStyle = view.css.color; + this.ctx.stroke(); + } + if (view.id) { + penCache.textLines[view.id] + ? penCache.textLines[view.id].push({ + text, + x, + y, + measuredWith, + textDecoration, + }) + : (penCache.textLines[view.id] = [ + { + text, + x, + y, + measuredWith, + textDecoration, + }, + ]); + } + } + } + } + this.ctx.restore(); + this._doBorder(view, width, height); + } + + _drawAbsRect(view) { + this.ctx.save(); + const { width, height } = this._preProcess(view); + if (GD.api.isGradient(view.css.color)) { + GD.api.doGradient(view.css.color, width, height, this.ctx); + } else { + this.ctx.fillStyle = view.css.color; + } + const { borderRadius, borderStyle, borderWidth } = view.css; + this._border({ + borderRadius, + width, + height, + borderWidth, + borderStyle, + }); + this.ctx.fill(); + this.ctx.restore(); + this._doBorder(view, width, height); + } + + // shadow 支持 (x, y, blur, color), 不支持 spread + // shadow:0px 0px 10px rgba(0,0,0,0.1); + _doShadow(view) { + if (!view.css || !view.css.shadow) { + return; + } + const box = view.css.shadow.replace(/,\s+/g, ',').split(/\s+/); + if (box.length > 4) { + console.error("shadow don't spread option"); + return; + } + this.ctx.shadowOffsetX = parseInt(box[0], 10); + this.ctx.shadowOffsetY = parseInt(box[1], 10); + this.ctx.shadowBlur = parseInt(box[2], 10); + this.ctx.shadowColor = box[3]; + } + + _getAngle(angle) { + return (Number(angle) * Math.PI) / 180; + } +} diff --git a/wxcomponents/painter/lib/qrcode.js b/wxcomponents/painter/lib/qrcode.js new file mode 100644 index 0000000..adf1b64 --- /dev/null +++ b/wxcomponents/painter/lib/qrcode.js @@ -0,0 +1,784 @@ +/* eslint-disable */ +!(function () { + + // alignment pattern + var adelta = [ + 0, 11, 15, 19, 23, 27, 31, + 16, 18, 20, 22, 24, 26, 28, 20, 22, 24, 24, 26, 28, 28, 22, 24, 24, + 26, 26, 28, 28, 24, 24, 26, 26, 26, 28, 28, 24, 26, 26, 26, 28, 28 + ]; + + // version block + var vpat = [ + 0xc94, 0x5bc, 0xa99, 0x4d3, 0xbf6, 0x762, 0x847, 0x60d, + 0x928, 0xb78, 0x45d, 0xa17, 0x532, 0x9a6, 0x683, 0x8c9, + 0x7ec, 0xec4, 0x1e1, 0xfab, 0x08e, 0xc1a, 0x33f, 0xd75, + 0x250, 0x9d5, 0x6f0, 0x8ba, 0x79f, 0xb0b, 0x42e, 0xa64, + 0x541, 0xc69 + ]; + + // final format bits with mask: level << 3 | mask + var fmtword = [ + 0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976, //L + 0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0, //M + 0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed, //Q + 0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b //H + ]; + + // 4 per version: number of blocks 1,2; data width; ecc width + var eccblocks = [ + 1, 0, 19, 7, 1, 0, 16, 10, 1, 0, 13, 13, 1, 0, 9, 17, + 1, 0, 34, 10, 1, 0, 28, 16, 1, 0, 22, 22, 1, 0, 16, 28, + 1, 0, 55, 15, 1, 0, 44, 26, 2, 0, 17, 18, 2, 0, 13, 22, + 1, 0, 80, 20, 2, 0, 32, 18, 2, 0, 24, 26, 4, 0, 9, 16, + 1, 0, 108, 26, 2, 0, 43, 24, 2, 2, 15, 18, 2, 2, 11, 22, + 2, 0, 68, 18, 4, 0, 27, 16, 4, 0, 19, 24, 4, 0, 15, 28, + 2, 0, 78, 20, 4, 0, 31, 18, 2, 4, 14, 18, 4, 1, 13, 26, + 2, 0, 97, 24, 2, 2, 38, 22, 4, 2, 18, 22, 4, 2, 14, 26, + 2, 0, 116, 30, 3, 2, 36, 22, 4, 4, 16, 20, 4, 4, 12, 24, + 2, 2, 68, 18, 4, 1, 43, 26, 6, 2, 19, 24, 6, 2, 15, 28, + 4, 0, 81, 20, 1, 4, 50, 30, 4, 4, 22, 28, 3, 8, 12, 24, + 2, 2, 92, 24, 6, 2, 36, 22, 4, 6, 20, 26, 7, 4, 14, 28, + 4, 0, 107, 26, 8, 1, 37, 22, 8, 4, 20, 24, 12, 4, 11, 22, + 3, 1, 115, 30, 4, 5, 40, 24, 11, 5, 16, 20, 11, 5, 12, 24, + 5, 1, 87, 22, 5, 5, 41, 24, 5, 7, 24, 30, 11, 7, 12, 24, + 5, 1, 98, 24, 7, 3, 45, 28, 15, 2, 19, 24, 3, 13, 15, 30, + 1, 5, 107, 28, 10, 1, 46, 28, 1, 15, 22, 28, 2, 17, 14, 28, + 5, 1, 120, 30, 9, 4, 43, 26, 17, 1, 22, 28, 2, 19, 14, 28, + 3, 4, 113, 28, 3, 11, 44, 26, 17, 4, 21, 26, 9, 16, 13, 26, + 3, 5, 107, 28, 3, 13, 41, 26, 15, 5, 24, 30, 15, 10, 15, 28, + 4, 4, 116, 28, 17, 0, 42, 26, 17, 6, 22, 28, 19, 6, 16, 30, + 2, 7, 111, 28, 17, 0, 46, 28, 7, 16, 24, 30, 34, 0, 13, 24, + 4, 5, 121, 30, 4, 14, 47, 28, 11, 14, 24, 30, 16, 14, 15, 30, + 6, 4, 117, 30, 6, 14, 45, 28, 11, 16, 24, 30, 30, 2, 16, 30, + 8, 4, 106, 26, 8, 13, 47, 28, 7, 22, 24, 30, 22, 13, 15, 30, + 10, 2, 114, 28, 19, 4, 46, 28, 28, 6, 22, 28, 33, 4, 16, 30, + 8, 4, 122, 30, 22, 3, 45, 28, 8, 26, 23, 30, 12, 28, 15, 30, + 3, 10, 117, 30, 3, 23, 45, 28, 4, 31, 24, 30, 11, 31, 15, 30, + 7, 7, 116, 30, 21, 7, 45, 28, 1, 37, 23, 30, 19, 26, 15, 30, + 5, 10, 115, 30, 19, 10, 47, 28, 15, 25, 24, 30, 23, 25, 15, 30, + 13, 3, 115, 30, 2, 29, 46, 28, 42, 1, 24, 30, 23, 28, 15, 30, + 17, 0, 115, 30, 10, 23, 46, 28, 10, 35, 24, 30, 19, 35, 15, 30, + 17, 1, 115, 30, 14, 21, 46, 28, 29, 19, 24, 30, 11, 46, 15, 30, + 13, 6, 115, 30, 14, 23, 46, 28, 44, 7, 24, 30, 59, 1, 16, 30, + 12, 7, 121, 30, 12, 26, 47, 28, 39, 14, 24, 30, 22, 41, 15, 30, + 6, 14, 121, 30, 6, 34, 47, 28, 46, 10, 24, 30, 2, 64, 15, 30, + 17, 4, 122, 30, 29, 14, 46, 28, 49, 10, 24, 30, 24, 46, 15, 30, + 4, 18, 122, 30, 13, 32, 46, 28, 48, 14, 24, 30, 42, 32, 15, 30, + 20, 4, 117, 30, 40, 7, 47, 28, 43, 22, 24, 30, 10, 67, 15, 30, + 19, 6, 118, 30, 18, 31, 47, 28, 34, 34, 24, 30, 20, 61, 15, 30 + ]; + + // Galois field log table + var glog = [ + 0xff, 0x00, 0x01, 0x19, 0x02, 0x32, 0x1a, 0xc6, 0x03, 0xdf, 0x33, 0xee, 0x1b, 0x68, 0xc7, 0x4b, + 0x04, 0x64, 0xe0, 0x0e, 0x34, 0x8d, 0xef, 0x81, 0x1c, 0xc1, 0x69, 0xf8, 0xc8, 0x08, 0x4c, 0x71, + 0x05, 0x8a, 0x65, 0x2f, 0xe1, 0x24, 0x0f, 0x21, 0x35, 0x93, 0x8e, 0xda, 0xf0, 0x12, 0x82, 0x45, + 0x1d, 0xb5, 0xc2, 0x7d, 0x6a, 0x27, 0xf9, 0xb9, 0xc9, 0x9a, 0x09, 0x78, 0x4d, 0xe4, 0x72, 0xa6, + 0x06, 0xbf, 0x8b, 0x62, 0x66, 0xdd, 0x30, 0xfd, 0xe2, 0x98, 0x25, 0xb3, 0x10, 0x91, 0x22, 0x88, + 0x36, 0xd0, 0x94, 0xce, 0x8f, 0x96, 0xdb, 0xbd, 0xf1, 0xd2, 0x13, 0x5c, 0x83, 0x38, 0x46, 0x40, + 0x1e, 0x42, 0xb6, 0xa3, 0xc3, 0x48, 0x7e, 0x6e, 0x6b, 0x3a, 0x28, 0x54, 0xfa, 0x85, 0xba, 0x3d, + 0xca, 0x5e, 0x9b, 0x9f, 0x0a, 0x15, 0x79, 0x2b, 0x4e, 0xd4, 0xe5, 0xac, 0x73, 0xf3, 0xa7, 0x57, + 0x07, 0x70, 0xc0, 0xf7, 0x8c, 0x80, 0x63, 0x0d, 0x67, 0x4a, 0xde, 0xed, 0x31, 0xc5, 0xfe, 0x18, + 0xe3, 0xa5, 0x99, 0x77, 0x26, 0xb8, 0xb4, 0x7c, 0x11, 0x44, 0x92, 0xd9, 0x23, 0x20, 0x89, 0x2e, + 0x37, 0x3f, 0xd1, 0x5b, 0x95, 0xbc, 0xcf, 0xcd, 0x90, 0x87, 0x97, 0xb2, 0xdc, 0xfc, 0xbe, 0x61, + 0xf2, 0x56, 0xd3, 0xab, 0x14, 0x2a, 0x5d, 0x9e, 0x84, 0x3c, 0x39, 0x53, 0x47, 0x6d, 0x41, 0xa2, + 0x1f, 0x2d, 0x43, 0xd8, 0xb7, 0x7b, 0xa4, 0x76, 0xc4, 0x17, 0x49, 0xec, 0x7f, 0x0c, 0x6f, 0xf6, + 0x6c, 0xa1, 0x3b, 0x52, 0x29, 0x9d, 0x55, 0xaa, 0xfb, 0x60, 0x86, 0xb1, 0xbb, 0xcc, 0x3e, 0x5a, + 0xcb, 0x59, 0x5f, 0xb0, 0x9c, 0xa9, 0xa0, 0x51, 0x0b, 0xf5, 0x16, 0xeb, 0x7a, 0x75, 0x2c, 0xd7, + 0x4f, 0xae, 0xd5, 0xe9, 0xe6, 0xe7, 0xad, 0xe8, 0x74, 0xd6, 0xf4, 0xea, 0xa8, 0x50, 0x58, 0xaf + ]; + + // Galios field exponent table + var gexp = [ + 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1d, 0x3a, 0x74, 0xe8, 0xcd, 0x87, 0x13, 0x26, + 0x4c, 0x98, 0x2d, 0x5a, 0xb4, 0x75, 0xea, 0xc9, 0x8f, 0x03, 0x06, 0x0c, 0x18, 0x30, 0x60, 0xc0, + 0x9d, 0x27, 0x4e, 0x9c, 0x25, 0x4a, 0x94, 0x35, 0x6a, 0xd4, 0xb5, 0x77, 0xee, 0xc1, 0x9f, 0x23, + 0x46, 0x8c, 0x05, 0x0a, 0x14, 0x28, 0x50, 0xa0, 0x5d, 0xba, 0x69, 0xd2, 0xb9, 0x6f, 0xde, 0xa1, + 0x5f, 0xbe, 0x61, 0xc2, 0x99, 0x2f, 0x5e, 0xbc, 0x65, 0xca, 0x89, 0x0f, 0x1e, 0x3c, 0x78, 0xf0, + 0xfd, 0xe7, 0xd3, 0xbb, 0x6b, 0xd6, 0xb1, 0x7f, 0xfe, 0xe1, 0xdf, 0xa3, 0x5b, 0xb6, 0x71, 0xe2, + 0xd9, 0xaf, 0x43, 0x86, 0x11, 0x22, 0x44, 0x88, 0x0d, 0x1a, 0x34, 0x68, 0xd0, 0xbd, 0x67, 0xce, + 0x81, 0x1f, 0x3e, 0x7c, 0xf8, 0xed, 0xc7, 0x93, 0x3b, 0x76, 0xec, 0xc5, 0x97, 0x33, 0x66, 0xcc, + 0x85, 0x17, 0x2e, 0x5c, 0xb8, 0x6d, 0xda, 0xa9, 0x4f, 0x9e, 0x21, 0x42, 0x84, 0x15, 0x2a, 0x54, + 0xa8, 0x4d, 0x9a, 0x29, 0x52, 0xa4, 0x55, 0xaa, 0x49, 0x92, 0x39, 0x72, 0xe4, 0xd5, 0xb7, 0x73, + 0xe6, 0xd1, 0xbf, 0x63, 0xc6, 0x91, 0x3f, 0x7e, 0xfc, 0xe5, 0xd7, 0xb3, 0x7b, 0xf6, 0xf1, 0xff, + 0xe3, 0xdb, 0xab, 0x4b, 0x96, 0x31, 0x62, 0xc4, 0x95, 0x37, 0x6e, 0xdc, 0xa5, 0x57, 0xae, 0x41, + 0x82, 0x19, 0x32, 0x64, 0xc8, 0x8d, 0x07, 0x0e, 0x1c, 0x38, 0x70, 0xe0, 0xdd, 0xa7, 0x53, 0xa6, + 0x51, 0xa2, 0x59, 0xb2, 0x79, 0xf2, 0xf9, 0xef, 0xc3, 0x9b, 0x2b, 0x56, 0xac, 0x45, 0x8a, 0x09, + 0x12, 0x24, 0x48, 0x90, 0x3d, 0x7a, 0xf4, 0xf5, 0xf7, 0xf3, 0xfb, 0xeb, 0xcb, 0x8b, 0x0b, 0x16, + 0x2c, 0x58, 0xb0, 0x7d, 0xfa, 0xe9, 0xcf, 0x83, 0x1b, 0x36, 0x6c, 0xd8, 0xad, 0x47, 0x8e, 0x00 + ]; + + // Working buffers: + // data input and ecc append, image working buffer, fixed part of image, run lengths for badness + var strinbuf = [], eccbuf = [], qrframe = [], framask = [], rlens = []; + // Control values - width is based on version, last 4 are from table. + var version, width, neccblk1, neccblk2, datablkw, eccblkwid; + var ecclevel = 2; + // set bit to indicate cell in qrframe is immutable. symmetric around diagonal + function setmask(x, y) { + var bt; + if (x > y) { + bt = x; + x = y; + y = bt; + } + // y*y = 1+3+5... + bt = y; + bt *= y; + bt += y; + bt >>= 1; + bt += x; + framask[bt] = 1; + } + + // enter alignment pattern - black to qrframe, white to mask (later black frame merged to mask) + function putalign(x, y) { + var j; + + qrframe[x + width * y] = 1; + for (j = -2; j < 2; j++) { + qrframe[(x + j) + width * (y - 2)] = 1; + qrframe[(x - 2) + width * (y + j + 1)] = 1; + qrframe[(x + 2) + width * (y + j)] = 1; + qrframe[(x + j + 1) + width * (y + 2)] = 1; + } + for (j = 0; j < 2; j++) { + setmask(x - 1, y + j); + setmask(x + 1, y - j); + setmask(x - j, y - 1); + setmask(x + j, y + 1); + } + } + + //======================================================================== + // Reed Solomon error correction + // exponentiation mod N + function modnn(x) { + while (x >= 255) { + x -= 255; + x = (x >> 8) + (x & 255); + } + return x; + } + + var genpoly = []; + + // Calculate and append ECC data to data block. Block is in strinbuf, indexes to buffers given. + function appendrs(data, dlen, ecbuf, eclen) { + var i, j, fb; + + for (i = 0; i < eclen; i++) + strinbuf[ecbuf + i] = 0; + for (i = 0; i < dlen; i++) { + fb = glog[strinbuf[data + i] ^ strinbuf[ecbuf]]; + if (fb != 255) /* fb term is non-zero */ + for (j = 1; j < eclen; j++) + strinbuf[ecbuf + j - 1] = strinbuf[ecbuf + j] ^ gexp[modnn(fb + genpoly[eclen - j])]; + else + for (j = ecbuf; j < ecbuf + eclen; j++) + strinbuf[j] = strinbuf[j + 1]; + strinbuf[ecbuf + eclen - 1] = fb == 255 ? 0 : gexp[modnn(fb + genpoly[0])]; + } + } + + //======================================================================== + // Frame data insert following the path rules + + // check mask - since symmetrical use half. + function ismasked(x, y) { + var bt; + if (x > y) { + bt = x; + x = y; + y = bt; + } + bt = y; + bt += y * y; + bt >>= 1; + bt += x; + return framask[bt]; + } + + //======================================================================== + // Apply the selected mask out of the 8. + function applymask(m) { + var x, y, r3x, r3y; + + switch (m) { + case 0: + for (y = 0; y < width; y++) + for (x = 0; x < width; x++) + if (!((x + y) & 1) && !ismasked(x, y)) + qrframe[x + y * width] ^= 1; + break; + case 1: + for (y = 0; y < width; y++) + for (x = 0; x < width; x++) + if (!(y & 1) && !ismasked(x, y)) + qrframe[x + y * width] ^= 1; + break; + case 2: + for (y = 0; y < width; y++) + for (r3x = 0, x = 0; x < width; x++ , r3x++) { + if (r3x == 3) + r3x = 0; + if (!r3x && !ismasked(x, y)) + qrframe[x + y * width] ^= 1; + } + break; + case 3: + for (r3y = 0, y = 0; y < width; y++ , r3y++) { + if (r3y == 3) + r3y = 0; + for (r3x = r3y, x = 0; x < width; x++ , r3x++) { + if (r3x == 3) + r3x = 0; + if (!r3x && !ismasked(x, y)) + qrframe[x + y * width] ^= 1; + } + } + break; + case 4: + for (y = 0; y < width; y++) + for (r3x = 0, r3y = ((y >> 1) & 1), x = 0; x < width; x++ , r3x++) { + if (r3x == 3) { + r3x = 0; + r3y = !r3y; + } + if (!r3y && !ismasked(x, y)) + qrframe[x + y * width] ^= 1; + } + break; + case 5: + for (r3y = 0, y = 0; y < width; y++ , r3y++) { + if (r3y == 3) + r3y = 0; + for (r3x = 0, x = 0; x < width; x++ , r3x++) { + if (r3x == 3) + r3x = 0; + if (!((x & y & 1) + !(!r3x | !r3y)) && !ismasked(x, y)) + qrframe[x + y * width] ^= 1; + } + } + break; + case 6: + for (r3y = 0, y = 0; y < width; y++ , r3y++) { + if (r3y == 3) + r3y = 0; + for (r3x = 0, x = 0; x < width; x++ , r3x++) { + if (r3x == 3) + r3x = 0; + if (!(((x & y & 1) + (r3x && (r3x == r3y))) & 1) && !ismasked(x, y)) + qrframe[x + y * width] ^= 1; + } + } + break; + case 7: + for (r3y = 0, y = 0; y < width; y++ , r3y++) { + if (r3y == 3) + r3y = 0; + for (r3x = 0, x = 0; x < width; x++ , r3x++) { + if (r3x == 3) + r3x = 0; + if (!(((r3x && (r3x == r3y)) + ((x + y) & 1)) & 1) && !ismasked(x, y)) + qrframe[x + y * width] ^= 1; + } + } + break; + } + return; + } + + // Badness coefficients. + var N1 = 3, N2 = 3, N3 = 40, N4 = 10; + + // Using the table of the length of each run, calculate the amount of bad image + // - long runs or those that look like finders; called twice, once each for X and Y + function badruns(length) { + var i; + var runsbad = 0; + for (i = 0; i <= length; i++) + if (rlens[i] >= 5) + runsbad += N1 + rlens[i] - 5; + // BwBBBwB as in finder + for (i = 3; i < length - 1; i += 2) + if (rlens[i - 2] == rlens[i + 2] + && rlens[i + 2] == rlens[i - 1] + && rlens[i - 1] == rlens[i + 1] + && rlens[i - 1] * 3 == rlens[i] + // white around the black pattern? Not part of spec + && (rlens[i - 3] == 0 // beginning + || i + 3 > length // end + || rlens[i - 3] * 3 >= rlens[i] * 4 || rlens[i + 3] * 3 >= rlens[i] * 4) + ) + runsbad += N3; + return runsbad; + } + + // Calculate how bad the masked image is - blocks, imbalance, runs, or finders. + function badcheck() { + var x, y, h, b, b1; + var thisbad = 0; + var bw = 0; + + // blocks of same color. + for (y = 0; y < width - 1; y++) + for (x = 0; x < width - 1; x++) + if ((qrframe[x + width * y] && qrframe[(x + 1) + width * y] + && qrframe[x + width * (y + 1)] && qrframe[(x + 1) + width * (y + 1)]) // all black + || !(qrframe[x + width * y] || qrframe[(x + 1) + width * y] + || qrframe[x + width * (y + 1)] || qrframe[(x + 1) + width * (y + 1)])) // all white + thisbad += N2; + + // X runs + for (y = 0; y < width; y++) { + rlens[0] = 0; + for (h = b = x = 0; x < width; x++) { + if ((b1 = qrframe[x + width * y]) == b) + rlens[h]++; + else + rlens[++h] = 1; + b = b1; + bw += b ? 1 : -1; + } + thisbad += badruns(h); + } + + // black/white imbalance + if (bw < 0) + bw = -bw; + + var big = bw; + var count = 0; + big += big << 2; + big <<= 1; + while (big > width * width) + big -= width * width, count++; + thisbad += count * N4; + + // Y runs + for (x = 0; x < width; x++) { + rlens[0] = 0; + for (h = b = y = 0; y < width; y++) { + if ((b1 = qrframe[x + width * y]) == b) + rlens[h]++; + else + rlens[++h] = 1; + b = b1; + } + thisbad += badruns(h); + } + return thisbad; + } + + function genframe(instring) { + var x, y, k, t, v, i, j, m; + + // find the smallest version that fits the string + t = instring.length; + version = 0; + do { + version++; + k = (ecclevel - 1) * 4 + (version - 1) * 16; + neccblk1 = eccblocks[k++]; + neccblk2 = eccblocks[k++]; + datablkw = eccblocks[k++]; + eccblkwid = eccblocks[k]; + k = datablkw * (neccblk1 + neccblk2) + neccblk2 - 3 + (version <= 9); + if (t <= k) + break; + } while (version < 40); + + // FIXME - insure that it fits insted of being truncated + width = 17 + 4 * version; + + // allocate, clear and setup data structures + v = datablkw + (datablkw + eccblkwid) * (neccblk1 + neccblk2) + neccblk2; + for (t = 0; t < v; t++) + eccbuf[t] = 0; + strinbuf = instring.slice(0); + + for (t = 0; t < width * width; t++) + qrframe[t] = 0; + + for (t = 0; t < (width * (width + 1) + 1) / 2; t++) + framask[t] = 0; + + // insert finders - black to frame, white to mask + for (t = 0; t < 3; t++) { + k = 0; + y = 0; + if (t == 1) + k = (width - 7); + if (t == 2) + y = (width - 7); + qrframe[(y + 3) + width * (k + 3)] = 1; + for (x = 0; x < 6; x++) { + qrframe[(y + x) + width * k] = 1; + qrframe[y + width * (k + x + 1)] = 1; + qrframe[(y + 6) + width * (k + x)] = 1; + qrframe[(y + x + 1) + width * (k + 6)] = 1; + } + for (x = 1; x < 5; x++) { + setmask(y + x, k + 1); + setmask(y + 1, k + x + 1); + setmask(y + 5, k + x); + setmask(y + x + 1, k + 5); + } + for (x = 2; x < 4; x++) { + qrframe[(y + x) + width * (k + 2)] = 1; + qrframe[(y + 2) + width * (k + x + 1)] = 1; + qrframe[(y + 4) + width * (k + x)] = 1; + qrframe[(y + x + 1) + width * (k + 4)] = 1; + } + } + + // alignment blocks + if (version > 1) { + t = adelta[version]; + y = width - 7; + for (; ;) { + x = width - 7; + while (x > t - 3) { + putalign(x, y); + if (x < t) + break; + x -= t; + } + if (y <= t + 9) + break; + y -= t; + putalign(6, y); + putalign(y, 6); + } + } + + // single black + qrframe[8 + width * (width - 8)] = 1; + + // timing gap - mask only + for (y = 0; y < 7; y++) { + setmask(7, y); + setmask(width - 8, y); + setmask(7, y + width - 7); + } + for (x = 0; x < 8; x++) { + setmask(x, 7); + setmask(x + width - 8, 7); + setmask(x, width - 8); + } + + // reserve mask-format area + for (x = 0; x < 9; x++) + setmask(x, 8); + for (x = 0; x < 8; x++) { + setmask(x + width - 8, 8); + setmask(8, x); + } + for (y = 0; y < 7; y++) + setmask(8, y + width - 7); + + // timing row/col + for (x = 0; x < width - 14; x++) + if (x & 1) { + setmask(8 + x, 6); + setmask(6, 8 + x); + } + else { + qrframe[(8 + x) + width * 6] = 1; + qrframe[6 + width * (8 + x)] = 1; + } + + // version block + if (version > 6) { + t = vpat[version - 7]; + k = 17; + for (x = 0; x < 6; x++) + for (y = 0; y < 3; y++ , k--) + if (1 & (k > 11 ? version >> (k - 12) : t >> k)) { + qrframe[(5 - x) + width * (2 - y + width - 11)] = 1; + qrframe[(2 - y + width - 11) + width * (5 - x)] = 1; + } + else { + setmask(5 - x, 2 - y + width - 11); + setmask(2 - y + width - 11, 5 - x); + } + } + + // sync mask bits - only set above for white spaces, so add in black bits + for (y = 0; y < width; y++) + for (x = 0; x <= y; x++) + if (qrframe[x + width * y]) + setmask(x, y); + + // convert string to bitstream + // 8 bit data to QR-coded 8 bit data (numeric or alphanum, or kanji not supported) + v = strinbuf.length; + + // string to array + for (i = 0; i < v; i++) + eccbuf[i] = strinbuf.charCodeAt(i); + strinbuf = eccbuf.slice(0); + + // calculate max string length + x = datablkw * (neccblk1 + neccblk2) + neccblk2; + if (v >= x - 2) { + v = x - 2; + if (version > 9) + v--; + } + + // shift and repack to insert length prefix + i = v; + if (version > 9) { + strinbuf[i + 2] = 0; + strinbuf[i + 3] = 0; + while (i--) { + t = strinbuf[i]; + strinbuf[i + 3] |= 255 & (t << 4); + strinbuf[i + 2] = t >> 4; + } + strinbuf[2] |= 255 & (v << 4); + strinbuf[1] = v >> 4; + strinbuf[0] = 0x40 | (v >> 12); + } + else { + strinbuf[i + 1] = 0; + strinbuf[i + 2] = 0; + while (i--) { + t = strinbuf[i]; + strinbuf[i + 2] |= 255 & (t << 4); + strinbuf[i + 1] = t >> 4; + } + strinbuf[1] |= 255 & (v << 4); + strinbuf[0] = 0x40 | (v >> 4); + } + // fill to end with pad pattern + i = v + 3 - (version < 10); + while (i < x) { + strinbuf[i++] = 0xec; + // buffer has room if (i == x) break; + strinbuf[i++] = 0x11; + } + + // calculate and append ECC + + // calculate generator polynomial + genpoly[0] = 1; + for (i = 0; i < eccblkwid; i++) { + genpoly[i + 1] = 1; + for (j = i; j > 0; j--) + genpoly[j] = genpoly[j] + ? genpoly[j - 1] ^ gexp[modnn(glog[genpoly[j]] + i)] : genpoly[j - 1]; + genpoly[0] = gexp[modnn(glog[genpoly[0]] + i)]; + } + for (i = 0; i <= eccblkwid; i++) + genpoly[i] = glog[genpoly[i]]; // use logs for genpoly[] to save calc step + + // append ecc to data buffer + k = x; + y = 0; + for (i = 0; i < neccblk1; i++) { + appendrs(y, datablkw, k, eccblkwid); + y += datablkw; + k += eccblkwid; + } + for (i = 0; i < neccblk2; i++) { + appendrs(y, datablkw + 1, k, eccblkwid); + y += datablkw + 1; + k += eccblkwid; + } + // interleave blocks + y = 0; + for (i = 0; i < datablkw; i++) { + for (j = 0; j < neccblk1; j++) + eccbuf[y++] = strinbuf[i + j * datablkw]; + for (j = 0; j < neccblk2; j++) + eccbuf[y++] = strinbuf[(neccblk1 * datablkw) + i + (j * (datablkw + 1))]; + } + for (j = 0; j < neccblk2; j++) + eccbuf[y++] = strinbuf[(neccblk1 * datablkw) + i + (j * (datablkw + 1))]; + for (i = 0; i < eccblkwid; i++) + for (j = 0; j < neccblk1 + neccblk2; j++) + eccbuf[y++] = strinbuf[x + i + j * eccblkwid]; + strinbuf = eccbuf; + + // pack bits into frame avoiding masked area. + x = y = width - 1; + k = v = 1; // up, minus + /* inteleaved data and ecc codes */ + m = (datablkw + eccblkwid) * (neccblk1 + neccblk2) + neccblk2; + for (i = 0; i < m; i++) { + t = strinbuf[i]; + for (j = 0; j < 8; j++ , t <<= 1) { + if (0x80 & t) + qrframe[x + width * y] = 1; + do { // find next fill position + if (v) + x--; + else { + x++; + if (k) { + if (y != 0) + y--; + else { + x -= 2; + k = !k; + if (x == 6) { + x--; + y = 9; + } + } + } + else { + if (y != width - 1) + y++; + else { + x -= 2; + k = !k; + if (x == 6) { + x--; + y -= 8; + } + } + } + } + v = !v; + } while (ismasked(x, y)); + } + } + + // save pre-mask copy of frame + strinbuf = qrframe.slice(0); + t = 0; // best + y = 30000; // demerit + // for instead of while since in original arduino code + // if an early mask was "good enough" it wouldn't try for a better one + // since they get more complex and take longer. + for (k = 0; k < 8; k++) { + applymask(k); // returns black-white imbalance + x = badcheck(); + if (x < y) { // current mask better than previous best? + y = x; + t = k; + } + if (t == 7) + break; // don't increment i to a void redoing mask + qrframe = strinbuf.slice(0); // reset for next pass + } + if (t != k) // redo best mask - none good enough, last wasn't t + applymask(t); + + // add in final mask/ecclevel bytes + y = fmtword[t + ((ecclevel - 1) << 3)]; + // low byte + for (k = 0; k < 8; k++ , y >>= 1) + if (y & 1) { + qrframe[(width - 1 - k) + width * 8] = 1; + if (k < 6) + qrframe[8 + width * k] = 1; + else + qrframe[8 + width * (k + 1)] = 1; + } + // high byte + for (k = 0; k < 7; k++ , y >>= 1) + if (y & 1) { + qrframe[8 + width * (width - 7 + k)] = 1; + if (k) + qrframe[(6 - k) + width * 8] = 1; + else + qrframe[7 + width * 8] = 1; + } + return qrframe; + } + + + + + var _canvas = null; + + var api = { + + get ecclevel() { + return ecclevel; + }, + + set ecclevel(val) { + ecclevel = val; + }, + + get size() { + return _size; + }, + + set size(val) { + _size = val + }, + + get canvas() { + return _canvas; + }, + + set canvas(el) { + _canvas = el; + }, + + getFrame: function (string) { + return genframe(string); + }, + //这里的utf16to8(str)是对Text中的字符串进行转码，让其支持中文 + utf16to8: function (str) { + var out, i, len, c; + + out = ""; + len = str.length; + for (i = 0; i < len; i++) { + c = str.charCodeAt(i); + if ((c >= 0x0001) && (c <= 0x007F)) { + out += str.charAt(i); + } else if (c > 0x07FF) { + out += String.fromCharCode(0xE0 | ((c >> 12) & 0x0F)); + out += String.fromCharCode(0x80 | ((c >> 6) & 0x3F)); + out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F)); + } else { + out += String.fromCharCode(0xC0 | ((c >> 6) & 0x1F)); + out += String.fromCharCode(0x80 | ((c >> 0) & 0x3F)); + } + } + return out; + }, + /** + * 新增$this参数，传入组件的this,兼容在组件中生成 + * @param bg 目前只能设置颜色值 + */ + draw: function (str, ctx, startX, startY, cavW, cavH, bg, color, $this, ecc) { + var that = this; + ecclevel = ecc || ecclevel; + if (!ctx) { + console.warn('No canvas provided to draw QR code in!') + return; + } + var size = Math.min(cavW, cavH); + str = that.utf16to8(str);//增加中文显示 + + var frame = that.getFrame(str); + var px = size / width; + if (bg) { + ctx.fillStyle = bg; + ctx.fillRect(startX, startY, cavW, cavW); + } + ctx.fillStyle = color || 'black'; + for (var i = 0; i < width; i++) { + for (var j = 0; j < width; j++) { + if (frame[j * width + i]) { + ctx.fillRect(startX + px * i, startY + px * j, px, px); + } + } + } + } + } + module.exports = { api } + // exports.draw = api; + +})(); \ No newline at end of file diff --git a/wxcomponents/painter/lib/sha1.js b/wxcomponents/painter/lib/sha1.js new file mode 100644 index 0000000..e743ec1 --- /dev/null +++ b/wxcomponents/painter/lib/sha1.js @@ -0,0 +1,97 @@ +var hexcase = 0; +var chrsz = 8; + +function hex_sha1(s) { + return binb2hex(core_sha1(str2binb(s), s.length * chrsz)); +} + +function core_sha1(x, len) { + x[len >> 5] |= 0x80 << (24 - (len % 32)); + x[(((len + 64) >> 9) << 4) + 15] = len; + + var w = Array(80); + var a = 1732584193; + var b = -271733879; + var c = -1732584194; + var d = 271733878; + var e = -1009589776; + + for (var i = 0; i < x.length; i += 16) { + var olda = a; + var oldb = b; + var oldc = c; + var oldd = d; + var olde = e; + + for (var j = 0; j < 80; j++) { + if (j < 16) w[j] = x[i + j]; + else w[j] = rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1); + var t = safe_add( + safe_add(rol(a, 5), sha1_ft(j, b, c, d)), + safe_add(safe_add(e, w[j]), sha1_kt(j)) + ); + e = d; + d = c; + c = rol(b, 30); + b = a; + a = t; + } + + a = safe_add(a, olda); + b = safe_add(b, oldb); + c = safe_add(c, oldc); + d = safe_add(d, oldd); + e = safe_add(e, olde); + } + return Array(a, b, c, d, e); +} + +function sha1_ft(t, b, c, d) { + if (t < 20) return (b & c) | (~b & d); + if (t < 40) return b ^ c ^ d; + if (t < 60) return (b & c) | (b & d) | (c & d); + return b ^ c ^ d; +} + +function sha1_kt(t) { + return t < 20 + ? 1518500249 + : t < 40 + ? 1859775393 + : t < 60 + ? -1894007588 + : -899497514; +} + +function safe_add(x, y) { + var lsw = (x & 0xffff) + (y & 0xffff); + var msw = (x >> 16) + (y >> 16) + (lsw >> 16); + return (msw << 16) | (lsw & 0xffff); +} + +function rol(num, cnt) { + return (num << cnt) | (num >>> (32 - cnt)); +} + +function str2binb(str) { + var bin = Array(); + var mask = (1 << chrsz) - 1; + for (var i = 0; i < str.length * chrsz; i += chrsz) + bin[i >> 5] |= (str.charCodeAt(i / chrsz) & mask) << (24 - (i % 32)); + return bin; +} + +function binb2hex(binarray) { + var hex_tab = hexcase ? "0123456789ABCDEF" : "0123456789abcdef"; + var str = ""; + for (var i = 0; i < binarray.length * 4; i++) { + str += + hex_tab.charAt((binarray[i >> 2] >> ((3 - (i % 4)) * 8 + 4)) & 0xf) + + hex_tab.charAt((binarray[i >> 2] >> ((3 - (i % 4)) * 8)) & 0xf); + } + return str; +} + +module.exports = { + hex_sha1, +} \ No newline at end of file diff --git a/wxcomponents/painter/lib/util.js b/wxcomponents/painter/lib/util.js new file mode 100644 index 0000000..a18808d --- /dev/null +++ b/wxcomponents/painter/lib/util.js @@ -0,0 +1,78 @@ + +function isValidUrl(url) { + return isOnlineUrl(url) || isDataUrl(url); +} + +function isOnlineUrl(url) { + return /(ht|f)tp(s?):\/\/([^ \\/]*\.)+[^ \\/]*(:[0-9]+)?\/?/.test(url) +} + +function isDataUrl(url) { + return /data:image\/(\w+);base64,(.*)/.test(url); +} + +/** + * 深度对比两个对象是否一致 + * from: https://github.com/epoberezkin/fast-deep-equal + * @param {Object} a 对象a + * @param {Object} b 对象b + * @return {Boolean} 是否相同 + */ +/* eslint-disable */ +function equal(a, b) { + if (a === b) return true; + + if (a && b && typeof a == 'object' && typeof b == 'object') { + var arrA = Array.isArray(a) + , arrB = Array.isArray(b) + , i + , length + , key; + + if (arrA && arrB) { + length = a.length; + if (length != b.length) return false; + for (i = length; i-- !== 0;) + if (!equal(a[i], b[i])) return false; + return true; + } + + if (arrA != arrB) return false; + + var dateA = a instanceof Date + , dateB = b instanceof Date; + if (dateA != dateB) return false; + if (dateA && dateB) return a.getTime() == b.getTime(); + + var regexpA = a instanceof RegExp + , regexpB = b instanceof RegExp; + if (regexpA != regexpB) return false; + if (regexpA && regexpB) return a.toString() == b.toString(); + + var keys = Object.keys(a); + length = keys.length; + + if (length !== Object.keys(b).length) + return false; + + for (i = length; i-- !== 0;) + if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false; + + for (i = length; i-- !== 0;) { + key = keys[i]; + if (!equal(a[key], b[key])) return false; + } + + return true; + } + + return a!==a && b!==b; +} + +module.exports = { + isValidUrl, + isOnlineUrl, + isDataUrl, + equal +}; + diff --git a/wxcomponents/painter/lib/wx-canvas.js b/wxcomponents/painter/lib/wx-canvas.js new file mode 100644 index 0000000..bb54ee4 --- /dev/null +++ b/wxcomponents/painter/lib/wx-canvas.js @@ -0,0 +1,611 @@ +// @ts-check +export default class WxCanvas { + ctx; + type; + canvasId; + canvasNode; + stepList = []; + canvasPrototype = {}; + + constructor(type, ctx, canvasId, isNew, canvasNode) { + this.ctx = ctx; + this.canvasId = canvasId; + this.type = type; + if (isNew) { + this.canvasNode = canvasNode || {}; + } + } + + set width(w) { + if (this.canvasNode) this.canvasNode.width = w; + } + + get width() { + if (this.canvasNode) return this.canvasNode.width; + return 0; + } + + set height(h) { + if (this.canvasNode) this.canvasNode.height = h; + } + + get height() { + if (this.canvasNode) return this.canvasNode.height; + return 0; + } + + set lineWidth(args) { + this.canvasPrototype.lineWidth = args; + this.stepList.push({ + action: "lineWidth", + args, + actionType: "set", + }); + } + + get lineWidth() { + return this.canvasPrototype.lineWidth; + } + + set lineCap(args) { + this.canvasPrototype.lineCap = args; + this.stepList.push({ + action: "lineCap", + args, + actionType: "set", + }); + } + + get lineCap() { + return this.canvasPrototype.lineCap; + } + + set lineJoin(args) { + this.canvasPrototype.lineJoin = args; + this.stepList.push({ + action: "lineJoin", + args, + actionType: "set", + }); + } + + get lineJoin() { + return this.canvasPrototype.lineJoin; + } + + set miterLimit(args) { + this.canvasPrototype.miterLimit = args; + this.stepList.push({ + action: "miterLimit", + args, + actionType: "set", + }); + } + + get miterLimit() { + return this.canvasPrototype.miterLimit; + } + + set lineDashOffset(args) { + this.canvasPrototype.lineDashOffset = args; + this.stepList.push({ + action: "lineDashOffset", + args, + actionType: "set", + }); + } + + get lineDashOffset() { + return this.canvasPrototype.lineDashOffset; + } + + set font(args) { + this.canvasPrototype.font = args; + this.ctx.font = args; + this.stepList.push({ + action: "font", + args, + actionType: "set", + }); + } + + get font() { + return this.canvasPrototype.font; + } + + set textAlign(args) { + this.canvasPrototype.textAlign = args; + this.stepList.push({ + action: "textAlign", + args, + actionType: "set", + }); + } + + get textAlign() { + return this.canvasPrototype.textAlign; + } + + set textBaseline(args) { + this.canvasPrototype.textBaseline = args; + this.stepList.push({ + action: "textBaseline", + args, + actionType: "set", + }); + } + + get textBaseline() { + return this.canvasPrototype.textBaseline; + } + + set fillStyle(args) { + this.canvasPrototype.fillStyle = args; + this.stepList.push({ + action: "fillStyle", + args, + actionType: "set", + }); + } + + get fillStyle() { + return this.canvasPrototype.fillStyle; + } + + set strokeStyle(args) { + this.canvasPrototype.strokeStyle = args; + this.stepList.push({ + action: "strokeStyle", + args, + actionType: "set", + }); + } + + get strokeStyle() { + return this.canvasPrototype.strokeStyle; + } + + set globalAlpha(args) { + this.canvasPrototype.globalAlpha = args; + this.stepList.push({ + action: "globalAlpha", + args, + actionType: "set", + }); + } + + get globalAlpha() { + return this.canvasPrototype.globalAlpha; + } + + set globalCompositeOperation(args) { + this.canvasPrototype.globalCompositeOperation = args; + this.stepList.push({ + action: "globalCompositeOperation", + args, + actionType: "set", + }); + } + + get globalCompositeOperation() { + return this.canvasPrototype.globalCompositeOperation; + } + + set shadowColor(args) { + this.canvasPrototype.shadowColor = args; + this.stepList.push({ + action: "shadowColor", + args, + actionType: "set", + }); + } + + get shadowColor() { + return this.canvasPrototype.shadowColor; + } + + set shadowOffsetX(args) { + this.canvasPrototype.shadowOffsetX = args; + this.stepList.push({ + action: "shadowOffsetX", + args, + actionType: "set", + }); + } + + get shadowOffsetX() { + return this.canvasPrototype.shadowOffsetX; + } + + set shadowOffsetY(args) { + this.canvasPrototype.shadowOffsetY = args; + this.stepList.push({ + action: "shadowOffsetY", + args, + actionType: "set", + }); + } + + get shadowOffsetY() { + return this.canvasPrototype.shadowOffsetY; + } + + set shadowBlur(args) { + this.canvasPrototype.shadowBlur = args; + this.stepList.push({ + action: "shadowBlur", + args, + actionType: "set", + }); + } + + get shadowBlur() { + return this.canvasPrototype.shadowBlur; + } + + save() { + this.stepList.push({ + action: "save", + args: null, + actionType: "func", + }); + } + + restore() { + this.stepList.push({ + action: "restore", + args: null, + actionType: "func", + }); + } + + setLineDash(...args) { + this.canvasPrototype.lineDash = args; + this.stepList.push({ + action: "setLineDash", + args, + actionType: "func", + }); + } + + moveTo(...args) { + this.stepList.push({ + action: "moveTo", + args, + actionType: "func", + }); + } + + closePath() { + this.stepList.push({ + action: "closePath", + args: null, + actionType: "func", + }); + } + + lineTo(...args) { + this.stepList.push({ + action: "lineTo", + args, + actionType: "func", + }); + } + + quadraticCurveTo(...args) { + this.stepList.push({ + action: "quadraticCurveTo", + args, + actionType: "func", + }); + } + + bezierCurveTo(...args) { + this.stepList.push({ + action: "bezierCurveTo", + args, + actionType: "func", + }); + } + + arcTo(...args) { + this.stepList.push({ + action: "arcTo", + args, + actionType: "func", + }); + } + + arc(...args) { + this.stepList.push({ + action: "arc", + args, + actionType: "func", + }); + } + + rect(...args) { + this.stepList.push({ + action: "rect", + args, + actionType: "func", + }); + } + + scale(...args) { + this.stepList.push({ + action: "scale", + args, + actionType: "func", + }); + } + + rotate(...args) { + this.stepList.push({ + action: "rotate", + args, + actionType: "func", + }); + } + + translate(...args) { + this.stepList.push({ + action: "translate", + args, + actionType: "func", + }); + } + + transform(...args) { + this.stepList.push({ + action: "transform", + args, + actionType: "func", + }); + } + + setTransform(...args) { + this.stepList.push({ + action: "setTransform", + args, + actionType: "func", + }); + } + + clearRect(...args) { + this.stepList.push({ + action: "clearRect", + args, + actionType: "func", + }); + } + + fillRect(...args) { + this.stepList.push({ + action: "fillRect", + args, + actionType: "func", + }); + } + + strokeRect(...args) { + this.stepList.push({ + action: "strokeRect", + args, + actionType: "func", + }); + } + + fillText(...args) { + this.stepList.push({ + action: "fillText", + args, + actionType: "func", + }); + } + + strokeText(...args) { + this.stepList.push({ + action: "strokeText", + args, + actionType: "func", + }); + } + + beginPath() { + this.stepList.push({ + action: "beginPath", + args: null, + actionType: "func", + }); + } + + fill() { + this.stepList.push({ + action: "fill", + args: null, + actionType: "func", + }); + } + + stroke() { + this.stepList.push({ + action: "stroke", + args: null, + actionType: "func", + }); + } + + drawFocusIfNeeded(...args) { + this.stepList.push({ + action: "drawFocusIfNeeded", + args, + actionType: "func", + }); + } + + clip() { + this.stepList.push({ + action: "clip", + args: null, + actionType: "func", + }); + } + + isPointInPath(...args) { + this.stepList.push({ + action: "isPointInPath", + args, + actionType: "func", + }); + } + + drawImage(...args) { + this.stepList.push({ + action: "drawImage", + args, + actionType: "func", + }); + } + + addHitRegion(...args) { + this.stepList.push({ + action: "addHitRegion", + args, + actionType: "func", + }); + } + + removeHitRegion(...args) { + this.stepList.push({ + action: "removeHitRegion", + args, + actionType: "func", + }); + } + + clearHitRegions(...args) { + this.stepList.push({ + action: "clearHitRegions", + args, + actionType: "func", + }); + } + + putImageData(...args) { + this.stepList.push({ + action: "putImageData", + args, + actionType: "func", + }); + } + + getLineDash() { + return this.canvasPrototype.lineDash; + } + + createLinearGradient(...args) { + return this.ctx.createLinearGradient(...args); + } + + createRadialGradient(...args) { + if (this.type === "2d") { + return this.ctx.createRadialGradient(...args); + } else { + return this.ctx.createCircularGradient(...args.slice(3, 6)); + } + } + + createPattern(...args) { + return this.ctx.createPattern(...args); + } + + measureText(...args) { + return this.ctx.measureText(...args); + } + + createImageData(...args) { + return this.ctx.createImageData(...args); + } + + getImageData(...args) { + return this.ctx.getImageData(...args); + } + + async draw(reserve, func) { + const realstepList = this.stepList.slice(); + this.stepList.length = 0; + if (this.type === "mina") { + if (realstepList.length > 0) { + for (const step of realstepList) { + this.implementMinaStep(step); + } + realstepList.length = 0; + } + this.ctx.draw(reserve, func); + } else if (this.type === "2d") { + if (!reserve) { + this.ctx.clearRect(0, 0, this.canvasNode.width, this.canvasNode.height); + } + if (realstepList.length > 0) { + for (const step of realstepList) { + await this.implement2DStep(step); + } + realstepList.length = 0; + } + if (func) { + func(); + } + } + realstepList.length = 0; + } + + implementMinaStep(step) { + switch (step.action) { + case "textAlign": { + this.ctx.setTextAlign(step.args); + break; + } + case "textBaseline": { + this.ctx.setTextBaseline(step.args); + break; + } + default: { + if (step.actionType === "set") { + this.ctx[step.action] = step.args; + } else if (step.actionType === "func") { + if (step.args) { + this.ctx[step.action](...step.args); + } else { + this.ctx[step.action](); + } + } + break; + } + } + } + + implement2DStep(step) { + return new Promise((resolve) => { + if (step.action === "drawImage") { + const img = this.canvasNode.createImage(); + img.src = step.args[0]; + img.onload = () => { + this.ctx.drawImage(img, ...step.args.slice(1)); + resolve(); + }; + } else { + if (step.actionType === "set") { + this.ctx[step.action] = step.args; + } else if (step.actionType === "func") { + if (step.args) { + this.ctx[step.action](...step.args); + } else { + this.ctx[step.action](); + } + } + resolve(); + } + }); + } +} diff --git a/wxcomponents/painter/painter.js b/wxcomponents/painter/painter.js new file mode 100644 index 0000000..7a11ff4 --- /dev/null +++ b/wxcomponents/painter/painter.js @@ -0,0 +1,864 @@ +import Pen, { penCache, clearPenCache } from './lib/pen'; +import Downloader from './lib/downloader'; +import WxCanvas from './lib/wx-canvas'; + +const util = require('./lib/util'); +const calc = require('./lib/calc'); + +const downloader = new Downloader(); + +// 最大尝试的绘制次数 +const MAX_PAINT_COUNT = 5; +const ACTION_DEFAULT_SIZE = 24; +const ACTION_OFFSET = '2rpx'; +Component({ + canvasWidthInPx: 0, + canvasHeightInPx: 0, + canvasNode: null, + paintCount: 0, + currentPalette: {}, + outterDisabled: false, + isDisabled: false, + needClear: false, + /** + * 组件的属性列表 + */ + properties: { + use2D: { + type: Boolean, + }, + customStyle: { + type: String, + }, + // 运行自定义选择框和删除缩放按钮 + customActionStyle: { + type: Object, + }, + palette: { + type: Object, + observer: function (newVal, oldVal) { + if (this.isNeedRefresh(newVal, oldVal)) { + this.paintCount = 0; + clearPenCache(); + this.startPaint(); + } + }, + }, + dancePalette: { + type: Object, + observer: function (newVal, oldVal) { + if (!this.isEmpty(newVal) && !this.properties.use2D) { + clearPenCache(); + this.initDancePalette(newVal); + } + }, + }, + // 缩放比，会在传入的 palette 中统一乘以该缩放比 + scaleRatio: { + type: Number, + value: 1, + }, + widthPixels: { + type: Number, + value: 0, + }, + // 启用脏检查，默认 false + dirty: { + type: Boolean, + value: false, + }, + LRU: { + type: Boolean, + value: false, + }, + action: { + type: Object, + observer: function (newVal, oldVal) { + if (newVal && !this.isEmpty(newVal) && !this.properties.use2D) { + this.doAction(newVal, null, false, true); + } + }, + }, + disableAction: { + type: Boolean, + observer: function (isDisabled) { + this.outterDisabled = isDisabled; + this.isDisabled = isDisabled; + }, + }, + clearActionBox: { + type: Boolean, + observer: function (needClear) { + if (needClear && !this.needClear) { + if (this.frontContext) { + setTimeout(() => { + this.frontContext.draw(); + }, 100); + this.touchedView = {}; + this.prevFindedIndex = this.findedIndex; + this.findedIndex = -1; + } + } + this.needClear = needClear; + }, + }, + }, + + data: { + picURL: '', + showCanvas: true, + painterStyle: '', + }, + + methods: { + /** + * 判断一个 object 是否为 空 + * @param {object} object + */ + isEmpty(object) { + for (const i in object) { + return false; + } + return true; + }, + + isNeedRefresh(newVal, oldVal) { + if (!newVal || this.isEmpty(newVal) || (this.data.dirty && util.equal(newVal, oldVal))) { + return false; + } + return true; + }, + + getBox(rect, type) { + const boxArea = { + type: 'rect', + css: { + height: `${rect.bottom - rect.top}px`, + width: `${rect.right - rect.left}px`, + left: `${rect.left}px`, + top: `${rect.top}px`, + borderWidth: '4rpx', + borderColor: '#1A7AF8', + color: 'transparent', + }, + }; + if (type === 'text') { + boxArea.css = Object.assign({}, boxArea.css, { + borderStyle: 'dashed', + }); + } + if (this.properties.customActionStyle && this.properties.customActionStyle.border) { + boxArea.css = Object.assign({}, boxArea.css, this.properties.customActionStyle.border); + } + Object.assign(boxArea, { + id: 'box', + }); + return boxArea; + }, + + getScaleIcon(rect, type) { + let scaleArea = {}; + const { customActionStyle } = this.properties; + if (customActionStyle && customActionStyle.scale) { + scaleArea = { + type: 'image', + url: type === 'text' ? customActionStyle.scale.textIcon : customActionStyle.scale.imageIcon, + css: { + height: `${2 * ACTION_DEFAULT_SIZE}rpx`, + width: `${2 * ACTION_DEFAULT_SIZE}rpx`, + borderRadius: `${ACTION_DEFAULT_SIZE}rpx`, + }, + }; + } else { + scaleArea = { + type: 'rect', + css: { + height: `${2 * ACTION_DEFAULT_SIZE}rpx`, + width: `${2 * ACTION_DEFAULT_SIZE}rpx`, + borderRadius: `${ACTION_DEFAULT_SIZE}rpx`, + color: '#0000ff', + }, + }; + } + scaleArea.css = Object.assign({}, scaleArea.css, { + align: 'center', + left: `${rect.right + ACTION_OFFSET.toPx()}px`, + top: + type === 'text' + ? `${rect.top - ACTION_OFFSET.toPx() - scaleArea.css.height.toPx() / 2}px` + : `${rect.bottom - ACTION_OFFSET.toPx() - scaleArea.css.height.toPx() / 2}px`, + }); + Object.assign(scaleArea, { + id: 'scale', + }); + return scaleArea; + }, + + getDeleteIcon(rect) { + let deleteArea = {}; + const { customActionStyle } = this.properties; + if (customActionStyle && customActionStyle.scale) { + deleteArea = { + type: 'image', + url: customActionStyle.delete.icon, + css: { + height: `${2 * ACTION_DEFAULT_SIZE}rpx`, + width: `${2 * ACTION_DEFAULT_SIZE}rpx`, + borderRadius: `${ACTION_DEFAULT_SIZE}rpx`, + }, + }; + } else { + deleteArea = { + type: 'rect', + css: { + height: `${2 * ACTION_DEFAULT_SIZE}rpx`, + width: `${2 * ACTION_DEFAULT_SIZE}rpx`, + borderRadius: `${ACTION_DEFAULT_SIZE}rpx`, + color: '#0000ff', + }, + }; + } + deleteArea.css = Object.assign({}, deleteArea.css, { + align: 'center', + left: `${rect.left - ACTION_OFFSET.toPx()}px`, + top: `${rect.top - ACTION_OFFSET.toPx() - deleteArea.css.height.toPx() / 2}px`, + }); + Object.assign(deleteArea, { + id: 'delete', + }); + return deleteArea; + }, + + doAction(action, callback, isMoving, overwrite) { + if (this.properties.use2D) { + return; + } + let newVal = null; + if (action) { + newVal = action.view; + } + if (newVal && newVal.id && this.touchedView.id !== newVal.id) { + // 带 id 的动作给撤回时使用，不带 id，表示对当前选中对象进行操作 + const { views } = this.currentPalette; + for (let i = 0; i < views.length; i++) { + if (views[i].id === newVal.id) { + // 跨层回撤，需要重新构建三层关系 + this.touchedView = views[i]; + this.findedIndex = i; + this.sliceLayers(); + break; + } + } + } + + const doView = this.touchedView; + + if (!doView || this.isEmpty(doView)) { + return; + } + if (newVal && newVal.css) { + if (overwrite) { + doView.css = newVal.css; + } else if (Array.isArray(doView.css) && Array.isArray(newVal.css)) { + doView.css = Object.assign({}, ...doView.css, ...newVal.css); + } else if (Array.isArray(doView.css)) { + doView.css = Object.assign({}, ...doView.css, newVal.css); + } else if (Array.isArray(newVal.css)) { + doView.css = Object.assign({}, doView.css, ...newVal.css); + } else { + doView.css = Object.assign({}, doView.css, newVal.css); + } + } + if (newVal && newVal.rect) { + doView.rect = newVal.rect; + } + if (newVal && newVal.url && doView.url && newVal.url !== doView.url) { + downloader + .download(newVal.url, this.properties.LRU) + .then(path => { + if (newVal.url.startsWith('https')) { + doView.originUrl = newVal.url; + } + doView.url = path; + wx.getImageInfo({ + src: path, + success: res => { + doView.sHeight = res.height; + doView.sWidth = res.width; + this.reDraw(doView, callback, isMoving); + }, + fail: () => { + this.reDraw(doView, callback, isMoving); + }, + }); + }) + .catch(error => { + // 未下载成功，直接绘制 + console.error(error); + this.reDraw(doView, callback, isMoving); + }); + } else { + newVal && newVal.text && doView.text && newVal.text !== doView.text && (doView.text = newVal.text); + newVal && + newVal.content && + doView.content && + newVal.content !== doView.content && + (doView.content = newVal.content); + this.reDraw(doView, callback, isMoving); + } + }, + + reDraw(doView, callback, isMoving) { + const draw = { + width: this.currentPalette.width, + height: this.currentPalette.height, + views: this.isEmpty(doView) ? [] : [doView], + }; + const pen = new Pen(this.globalContext, draw); + + pen.paint(callbackInfo => { + callback && callback(callbackInfo); + this.triggerEvent('viewUpdate', { + view: this.touchedView, + }); + }); + + const { rect, css, type } = doView; + + this.block = { + width: this.currentPalette.width, + height: this.currentPalette.height, + views: this.isEmpty(doView) ? [] : [this.getBox(rect, doView.type)], + }; + if (css && css.scalable) { + this.block.views.push(this.getScaleIcon(rect, type)); + } + if (css && css.deletable) { + this.block.views.push(this.getDeleteIcon(rect)); + } + const topBlock = new Pen(this.frontContext, this.block); + topBlock.paint(); + }, + + isInView(x, y, rect) { + return x > rect.left && y > rect.top && x < rect.right && y < rect.bottom; + }, + + isInDelete(x, y) { + for (const view of this.block.views) { + if (view.id === 'delete') { + return x > view.rect.left && y > view.rect.top && x < view.rect.right && y < view.rect.bottom; + } + } + return false; + }, + + isInScale(x, y) { + for (const view of this.block.views) { + if (view.id === 'scale') { + return x > view.rect.left && y > view.rect.top && x < view.rect.right && y < view.rect.bottom; + } + } + return false; + }, + + touchedView: {}, + findedIndex: -1, + onClick() { + const x = this.startX; + const y = this.startY; + const totalLayerCount = this.currentPalette.views.length; + let canBeTouched = []; + let isDelete = false; + let deleteIndex = -1; + for (let i = totalLayerCount - 1; i >= 0; i--) { + const view = this.currentPalette.views[i]; + const { rect } = view; + if (this.touchedView && this.touchedView.id && this.touchedView.id === view.id && this.isInDelete(x, y, rect)) { + canBeTouched.length = 0; + deleteIndex = i; + isDelete = true; + break; + } + if (this.isInView(x, y, rect)) { + canBeTouched.push({ + view, + index: i, + }); + } + } + this.touchedView = {}; + if (canBeTouched.length === 0) { + this.findedIndex = -1; + } else { + let i = 0; + const touchAble = canBeTouched.filter(item => Boolean(item.view.id)); + if (touchAble.length === 0) { + this.findedIndex = canBeTouched[0].index; + } else { + for (i = 0; i < touchAble.length; i++) { + if (this.findedIndex === touchAble[i].index) { + i++; + break; + } + } + if (i === touchAble.length) { + i = 0; + } + this.touchedView = touchAble[i].view; + this.findedIndex = touchAble[i].index; + this.triggerEvent('viewClicked', { + view: this.touchedView, + }); + } + } + if (this.findedIndex < 0 || (this.touchedView && !this.touchedView.id)) { + // 证明点击了背景 或无法移动的view + this.frontContext.draw(); + if (isDelete) { + this.triggerEvent('touchEnd', { + view: this.currentPalette.views[deleteIndex], + index: deleteIndex, + type: 'delete', + }); + this.doAction(); + } else if (this.findedIndex < 0) { + this.triggerEvent('viewClicked', {}); + } + this.findedIndex = -1; + this.prevFindedIndex = -1; + } else if (this.touchedView && this.touchedView.id) { + this.sliceLayers(); + } + }, + + sliceLayers() { + const bottomLayers = this.currentPalette.views.slice(0, this.findedIndex); + const topLayers = this.currentPalette.views.slice(this.findedIndex + 1); + const bottomDraw = { + width: this.currentPalette.width, + height: this.currentPalette.height, + background: this.currentPalette.background, + views: bottomLayers, + }; + const topDraw = { + width: this.currentPalette.width, + height: this.currentPalette.height, + views: topLayers, + }; + if (this.prevFindedIndex < this.findedIndex) { + new Pen(this.bottomContext, bottomDraw).paint(); + this.doAction(); + new Pen(this.topContext, topDraw).paint(); + } else { + new Pen(this.topContext, topDraw).paint(); + this.doAction(); + new Pen(this.bottomContext, bottomDraw).paint(); + } + this.prevFindedIndex = this.findedIndex; + }, + + startX: 0, + startY: 0, + startH: 0, + startW: 0, + isScale: false, + startTimeStamp: 0, + onTouchStart(event) { + if (this.isDisabled) { + return; + } + const { x, y } = event.touches[0]; + this.startX = x; + this.startY = y; + this.startTimeStamp = new Date().getTime(); + if (this.touchedView && !this.isEmpty(this.touchedView)) { + const { rect } = this.touchedView; + if (this.isInScale(x, y, rect)) { + this.isScale = true; + this.startH = rect.bottom - rect.top; + this.startW = rect.right - rect.left; + } else { + this.isScale = false; + } + } else { + this.isScale = false; + } + }, + + onTouchEnd(e) { + if (this.isDisabled) { + return; + } + const current = new Date().getTime(); + if (current - this.startTimeStamp <= 500 && !this.hasMove) { + !this.isScale && this.onClick(e); + } else if (this.touchedView && !this.isEmpty(this.touchedView)) { + this.triggerEvent('touchEnd', { + view: this.touchedView, + }); + } + this.hasMove = false; + }, + + onTouchCancel(e) { + if (this.isDisabled) { + return; + } + this.onTouchEnd(e); + }, + + hasMove: false, + onTouchMove(event) { + if (this.isDisabled) { + return; + } + this.hasMove = true; + if (!this.touchedView || (this.touchedView && !this.touchedView.id)) { + return; + } + const { x, y } = event.touches[0]; + const offsetX = x - this.startX; + const offsetY = y - this.startY; + const { rect, type } = this.touchedView; + let css = {}; + if (this.isScale) { + clearPenCache(this.touchedView.id); + const newW = this.startW + offsetX > 1 ? this.startW + offsetX : 1; + if (this.touchedView.css && this.touchedView.css.minWidth) { + if (newW < this.touchedView.css.minWidth.toPx()) { + return; + } + } + if (this.touchedView.rect && this.touchedView.rect.minWidth) { + if (newW < this.touchedView.rect.minWidth) { + return; + } + } + const newH = this.startH + offsetY > 1 ? this.startH + offsetY : 1; + css = { + width: `${newW}px`, + }; + if (type !== 'text') { + if (type === 'image') { + css.height = `${(newW * this.startH) / this.startW}px`; + } else { + css.height = `${newH}px`; + } + } + } else { + this.startX = x; + this.startY = y; + css = { + left: `${rect.x + offsetX}px`, + top: `${rect.y + offsetY}px`, + right: undefined, + bottom: undefined, + }; + } + this.doAction( + { + view: { + css, + }, + }, + null, + !this.isScale, + ); + }, + + initScreenK() { + if (!(getApp() && getApp().systemInfo && getApp().systemInfo.screenWidth)) { + try { + getApp().systemInfo = wx.getSystemInfoSync(); + } catch (e) { + console.error(`Painter get system info failed, ${JSON.stringify(e)}`); + return; + } + } + this.screenK = 0.5; + if (getApp() && getApp().systemInfo && getApp().systemInfo.screenWidth) { + this.screenK = getApp().systemInfo.screenWidth / 750; + } + setStringPrototype(this.screenK, this.properties.scaleRatio); + }, + + initDancePalette() { + if (this.properties.use2D) { + return; + } + this.isDisabled = true; + this.initScreenK(); + this.downloadImages(this.properties.dancePalette).then(async palette => { + this.currentPalette = palette; + const { width, height } = palette; + + if (!width || !height) { + console.error(`You should set width and height correctly for painter, width: ${width}, height: ${height}`); + return; + } + this.setData({ + painterStyle: `width:${width.toPx()}px;height:${height.toPx()}px;`, + }); + this.frontContext || (this.frontContext = await this.getCanvasContext(this.properties.use2D, 'front')); + this.bottomContext || (this.bottomContext = await this.getCanvasContext(this.properties.use2D, 'bottom')); + this.topContext || (this.topContext = await this.getCanvasContext(this.properties.use2D, 'top')); + this.globalContext || (this.globalContext = await this.getCanvasContext(this.properties.use2D, 'k-canvas')); + new Pen(this.bottomContext, palette, this.properties.use2D).paint(() => { + this.isDisabled = false; + this.isDisabled = this.outterDisabled; + this.triggerEvent('didShow'); + }); + this.globalContext.draw(); + this.frontContext.draw(); + this.topContext.draw(); + }); + this.touchedView = {}; + }, + + startPaint() { + this.initScreenK(); + const { width, height } = this.properties.palette; + + if (!width || !height) { + console.error(`You should set width and height correctly for painter, width: ${width}, height: ${height}`); + return; + } + + let needScale = false; + // 生成图片时，根据设置的像素值重新绘制 + if (width.toPx() !== this.canvasWidthInPx) { + this.canvasWidthInPx = width.toPx(); + needScale = this.properties.use2D; + } + if (this.properties.widthPixels) { + setStringPrototype(this.screenK, this.properties.widthPixels / this.canvasWidthInPx); + this.canvasWidthInPx = this.properties.widthPixels; + } + + if (this.canvasHeightInPx !== height.toPx()) { + this.canvasHeightInPx = height.toPx(); + needScale = needScale || this.properties.use2D; + } + this.setData( + { + photoStyle: `width:${this.canvasWidthInPx}px;height:${this.canvasHeightInPx}px;`, + }, + function () { + this.downloadImages(this.properties.palette).then(async palette => { + if (!this.photoContext) { + this.photoContext = await this.getCanvasContext(this.properties.use2D, 'photo'); + } + if (needScale) { + const scale = getApp().systemInfo.pixelRatio; + this.photoContext.width = this.canvasWidthInPx * scale; + this.photoContext.height = this.canvasHeightInPx * scale; + this.photoContext.scale(scale, scale); + } + new Pen(this.photoContext, palette).paint(() => { + this.saveImgToLocal(); + }); + setStringPrototype(this.screenK, this.properties.scaleRatio); + }); + }, + ); + }, + + downloadImages(palette) { + return new Promise((resolve, reject) => { + let preCount = 0; + let completeCount = 0; + const paletteCopy = JSON.parse(JSON.stringify(palette)); + if (paletteCopy.background) { + preCount++; + downloader.download(paletteCopy.background, this.properties.LRU).then( + path => { + paletteCopy.background = path; + completeCount++; + if (preCount === completeCount) { + resolve(paletteCopy); + } + }, + () => { + completeCount++; + if (preCount === completeCount) { + resolve(paletteCopy); + } + }, + ); + } + if (paletteCopy.views) { + for (const view of paletteCopy.views) { + if (view && view.type === 'image' && view.url) { + preCount++; + /* eslint-disable no-loop-func */ + downloader.download(view.url, this.properties.LRU).then( + path => { + view.originUrl = view.url; + view.url = path; + wx.getImageInfo({ + src: path, + success: res => { + // 获得一下图片信息，供后续裁减使用 + view.sWidth = res.width; + view.sHeight = res.height; + }, + fail: error => { + // 如果图片坏了，则直接置空，防止坑爹的 canvas 画崩溃了 + console.warn(`getImageInfo ${view.originUrl} failed, ${JSON.stringify(error)}`); + view.url = ''; + }, + complete: () => { + completeCount++; + if (preCount === completeCount) { + resolve(paletteCopy); + } + }, + }); + }, + () => { + completeCount++; + if (preCount === completeCount) { + resolve(paletteCopy); + } + }, + ); + } + } + } + if (preCount === 0) { + resolve(paletteCopy); + } + }); + }, + + saveImgToLocal() { + const that = this; + setTimeout(() => { + wx.canvasToTempFilePath( + { + canvasId: 'photo', + canvas: that.properties.use2D ? that.canvasNode : null, + destWidth: that.canvasWidthInPx, + destHeight: that.canvasHeightInPx, + success: function (res) { + that.getImageInfo(res.tempFilePath); + }, + fail: function (error) { + console.error(`canvasToTempFilePath failed, ${JSON.stringify(error)}`); + that.triggerEvent('imgErr', { + error: error, + }); + }, + }, + this, + ); + }, 300); + }, + + getCanvasContext(use2D, id) { + const that = this; + return new Promise(resolve => { + if (use2D) { + const query = wx.createSelectorQuery().in(that); + const selectId = `#${id}`; + query + .select(selectId) + .fields({ node: true, size: true }) + .exec(res => { + that.canvasNode = res[0].node; + const ctx = that.canvasNode.getContext('2d'); + const wxCanvas = new WxCanvas('2d', ctx, id, true, that.canvasNode); + resolve(wxCanvas); + }); + } else { + const temp = wx.createCanvasContext(id, that); + resolve(new WxCanvas('mina', temp, id, true)); + } + }); + }, + + getImageInfo(filePath) { + const that = this; + wx.getImageInfo({ + src: filePath, + success: infoRes => { + if (that.paintCount > MAX_PAINT_COUNT) { + const error = `The result is always fault, even we tried ${MAX_PAINT_COUNT} times`; + console.error(error); + that.triggerEvent('imgErr', { + error: error, + }); + return; + } + // 比例相符时才证明绘制成功，否则进行强制重绘制 + if ( + Math.abs( + (infoRes.width * that.canvasHeightInPx - that.canvasWidthInPx * infoRes.height) / + (infoRes.height * that.canvasHeightInPx), + ) < 0.01 + ) { + that.triggerEvent('imgOK', { + path: filePath, + }); + } else { + that.startPaint(); + } + that.paintCount++; + }, + fail: error => { + console.error(`getImageInfo failed, ${JSON.stringify(error)}`); + that.triggerEvent('imgErr', { + error: error, + }); + }, + }); + }, + }, +}); + +function setStringPrototype(screenK, scale) { + /* eslint-disable no-extend-native */ + /** + * string 到对应的 px + * @param {Number} baseSize 当设置了 % 号时，设置的基准值 + */ + String.prototype.toPx = function toPx(_, baseSize) { + if (this === '0') { + return 0; + } + const REG = /-?[0-9]+(\.[0-9]+)?(rpx|px|%)/; + + const parsePx = origin => { + const results = new RegExp(REG).exec(origin); + if (!origin || !results) { + console.error(`The size: ${origin} is illegal`); + return 0; + } + const unit = results[2]; + const value = parseFloat(origin); + + let res = 0; + if (unit === 'rpx') { + res = Math.round(value * (screenK || 0.5) * (scale || 1)); + } else if (unit === 'px') { + res = Math.round(value * (scale || 1)); + } else if (unit === '%') { + res = Math.round((value * baseSize) / 100); + } + return res; + }; + const formula = /^calc\((.+)\)$/.exec(this); + if (formula && formula[1]) { + // 进行 calc 计算 + const afterOne = formula[1].replace(/([^\s\(\+\-\*\/]+)\.(left|right|bottom|top|width|height)/g, word => { + const [id, attr] = word.split('.'); + return penCache.viewRect[id][attr]; + }); + const afterTwo = afterOne.replace(new RegExp(REG, 'g'), parsePx); + return calc(afterTwo); + } else { + return parsePx(this); + } + }; +} diff --git a/wxcomponents/painter/painter.json b/wxcomponents/painter/painter.json new file mode 100644 index 0000000..e8cfaaf --- /dev/null +++ b/wxcomponents/painter/painter.json @@ -0,0 +1,4 @@ +{ + "component": true, + "usingComponents": {} +} \ No newline at end of file diff --git a/wxcomponents/painter/painter.wxml b/wxcomponents/painter/painter.wxml new file mode 100644 index 0000000..6873c45 --- /dev/null +++ b/wxcomponents/painter/painter.wxml @@ -0,0 +1,21 @@ + + + + + + + + + + + + + +