对大图标进行压缩

This commit is contained in:
fofolee 2020-07-21 18:38:41 +08:00
parent 1590585cdd
commit a8fe6823ca
3 changed files with 180 additions and 31 deletions

View File

@ -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;
}));

View File

@ -14,6 +14,7 @@
<script src="assets/plugins/mousetrap/mousetrap-record.min.js"></script>
<script src="assets/plugins/codemirrorloader.js"></script>
<script src="assets/plugins/select2/select2.min.js"></script>
<script src="assets/plugins/picture-compressor.js"></script>
<title>快捷命令</title>
</head>
@ -26,4 +27,4 @@
</div>
</body>
</html>
</html>

View File

@ -129,8 +129,8 @@ quickcommand = {
var options = {
onBeforeOpen: () => {
clickButton = i => {
setTimeout(() => { swal.clickConfirm() }, 50);
reslove({ id: i, text: buttons[i] })
swal.clickConfirm()
}
$(".output").is(":parent") && utools.setExpendHeight(600) || modWindowHeight($('.swal2-popup').outerHeight() + 20)
},
@ -276,21 +276,18 @@ quickcommand = {
});
},
showConfirmBox: function(title) {
return new Promise((reslove, reject) => {
let options = {
text: title,
icon: 'warning',
showCancelButton: true,
confirmButtonColor: '#3085d6',
cancelButtonColor: '#d33',
confirmButtonText: '确定!',
cancelButtonText: '手抖...',
}
Swal.fire(options).then(result => {
if (result.value) reslove()
})
});
showConfirmBox: async function (title) {
let options = {
text: title,
icon: 'warning',
showCancelButton: true,
confirmButtonColor: '#3085d6',
cancelButtonColor: '#d33',
confirmButtonText: '确定!',
cancelButtonText: '手抖...'
}
let result = await Swal.fire(options)
if (result.value) return true;
},
// 关闭进程
@ -387,6 +384,18 @@ let createNodeVM = (payload = "") => {
return vm
}
let stringifyAll = item => {
var cache = [];
var string = JSON.stringify(item, (key, value) => {
if (typeof value === 'object' && value !== null) {
if (cache.indexOf(value) !== -1) return
cache.push(value);
}
return value;
}, '\t')
if (string != "{}") return string
}
let parseItem = item => {
if (typeof (item) == "object") {
if (Buffer.isBuffer(item)) {
@ -394,19 +403,10 @@ let parseItem = item => {
if (item.length > 50) bufferString += `... ${(item.length / 1000).toFixed(2)}kb`
return bufferString + ']'
} else {
try {
var cache = [];
var string = JSON.stringify(item, (key, value) => {
if (typeof value === 'object' && value !== null) {
if (cache.indexOf(value) !== -1) return
cache.push(value);
}
return value;
}, '\t')
if (string != "{}") return string
} catch (error) { }
try { return stringifyAll(item) }
catch (error) { }
}
} else if (typeof (item) == "undefined") {
} else if (typeof item == "undefined") {
return "undefined"
}
return item.toString()
@ -543,8 +543,24 @@ getQuickCommandScriptFile = ext => {
return path.join(os.tmpdir(), `QuickCommandTempScript.${ext}`)
}
getBase64Ico = path => {
return fs.readFileSync(path, 'base64');
getBase64Ico = async path => {
let sourceImage = 'data:image/png;base64,' + fs.readFileSync(path, 'base64')
let compressedImage = await getCompressedIco(path)
return compressedImage.length > sourceImage.length ? sourceImage : compressedImage
}
getCompressedIco = async (img, width = 40) => {
let compressedImage = await pictureCompress({ img: img, width: width, height: width, type: 'png', quality: 1 })
return compressedImage.img
}
getDefaultCommands = () => {
let baseDir = path.join(__dirname, 'defaults')
let defaultCommands = {}
fs.readdirSync(baseDir).forEach(f => {
defaultCommands[f.slice(0, -5)] = path.join(baseDir, f)
})
return defaultCommands
}
getFileInfo = options => {