From 0e5b38276129b61045c25c4ebf203a841d2ae1ef Mon Sep 17 00:00:00 2001 From: fofolee Date: Mon, 11 Apr 2022 00:41:07 +0800 Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=94=B9=E5=9B=BE=E6=A0=87=E5=8A=9F?= =?UTF-8?q?=E8=83=BD?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- public/lib/picture-compressor.js | 132 +++++++++++++++++++++++++++ public/preload.js | 1 + src/components/CommandMenu.vue | 13 ++- src/components/IconPicker.vue | 149 +++++++++++++++++++++++++++++++ 4 files changed, 294 insertions(+), 1 deletion(-) create mode 100644 public/lib/picture-compressor.js create mode 100644 src/components/IconPicker.vue diff --git a/public/lib/picture-compressor.js b/public/lib/picture-compressor.js new file mode 100644 index 0000000..875c9e6 --- /dev/null +++ b/public/lib/picture-compressor.js @@ -0,0 +1,132 @@ +(function (global, factory) { + typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() : + typeof define === 'function' && define.amd ? define(factory) : + (global = global || self, global.pictureCompress = factory()); +}(this, function () { 'use strict'; + + /** + * 将图片压缩为对应尺寸 + * @param {Object} options + * @param {String} options.img 图片的url或者base64数据 + * @param {Number} options.width 目标图片的宽度 + * @param {Number} options.height 目标图片的高度 + * @param {Number} options.quality 生成目标图片质量 + * @param {String} options.fit 图片压缩填充模式默认 scale：按比例缩放，可选 fill：按使用目标尺寸 + * @param {String} options.type 图片压缩类型默认 jpg，可选 png + * @param {Number} options.rotate 图片旋转，由于手机拍照的角度和我们使用的头像不一致，需要旋转 默认0 仅支持 90 180 -90 + * @returns {Promise} then {width,height,img} + */ + function pictureCompress(options) { + return new Promise(function (resolve, reject) { + if (!options.img) { + reject(new Error('need img')); + return; + } + + var imgSrc = options.img, + width = options.width || 640, + height = options.height || 640, + type = options.type || 'jpg', + quality = options.quality || 0.92, + fit = options.fit || 'scale', + rotate = options.rotate || 0; + + if (width <= 0 || height <= 0) { + reject(new Error('dist width or height need > 0')); + return; + } + + if (!/jpg|png|jpeg/.test(type)) { + reject(new Error('type need jpg or png!')); + return; + } + + if (rotate !== 90 && rotate !== -90 && rotate !== 0 && rotate !== 180) { + reject(new Error('rotate mast be 0 90 -90 180!')); + return; + } + + var changeWidthAndHeight = rotate === 90 || rotate === -90; + var image = new Image(); + image.src = imgSrc; + + image.onload = function () { + var distSize = getDistSize({ + width: changeWidthAndHeight ? this.naturalHeight : this.naturalWidth, + height: changeWidthAndHeight ? this.naturalWidth : this.naturalHeight + }, { + width: changeWidthAndHeight ? height : width, + height: changeWidthAndHeight ? width : height + }, fit); + var imgData = compress(this, distSize.width, distSize.height, type, quality, rotate); + resolve({ + width: distSize.width, + height: distSize.height, + img: imgData + }); + }; + + image.onerror = function (err) { + reject(err); + }; + }); + } + /** + * 将图片转换为固定尺寸的 + * @param {Image} img 图片数据 + * @param {Number} width 转换之后的图片宽度 + * @param {Number} height 转换之后的图片高度 + * @param {String} type base64的图片类型 jpg png + * @param {Number} quality 转换之后的图片质量 + */ + + + function compress(img, width, height, type, quality, rotate) { + var canvas = document.createElement('canvas'); + var ctx = canvas.getContext('2d'); + var types = { + 'jpg': 'image/jpeg', + 'jpeg': 'image/jpeg', + 'png': 'image/png' + }; + canvas.width = width; + canvas.height = height; + + if (rotate === 90) { + ctx.translate(width, 0); + ctx.rotate(90 * Math.PI / 180); + ctx.drawImage(img, 0, 0, height, width); + } else if (rotate === -90) { + ctx.translate(0, height); + ctx.rotate(-90 * Math.PI / 180); + ctx.drawImage(img, 0, 0, height, width); + } else if (rotate === 180) { + ctx.translate(width, height); + ctx.rotate(180 * Math.PI / 180); + ctx.drawImage(img, 0, 0, width, height); + } else { + ctx.drawImage(img, 0, 0, width, height); + } + + return canvas.toDataURL(types[type], quality); + } + /** + * 选择源尺寸与目标尺寸比例中较小的那个，保证图片可以完全显示 + * 最大值不超过1，如果图片源尺寸小于目标尺寸，则不做处理，返回图片原尺寸 + * @param {Object} source 源图片的宽高 + * @param {Object} dist 目标图片的宽高 + */ + + + function getDistSize(source, dist, fit) { + if (fit === 'fill') return dist; + var scale = Math.min(dist.width / source.width, dist.height / source.height, 1); + return { + width: Math.round(source.width * scale), + height: Math.round(source.height * scale) + }; + } + + return pictureCompress; + +})); diff --git a/public/preload.js b/public/preload.js index d6e4ad0..ef6722f 100644 --- a/public/preload.js +++ b/public/preload.js @@ -11,6 +11,7 @@ const path = require("path") const util = require("util") const PinyinMatch = require('pinyin-match'); const axios = require('axios'); +const pictureCompress = require("./lib/picture-compressor") _ = require("lodash") window.pinYinMatch = PinyinMatch diff --git a/src/components/CommandMenu.vue b/src/components/CommandMenu.vue index 470a721..c14855f 100644 --- a/src/components/CommandMenu.vue +++ b/src/components/CommandMenu.vue @@ -14,6 +14,7 @@ />