192 lines
5.2 KiB
JavaScript
192 lines
5.2 KiB
JavaScript
const imgTools = {
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/**
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* @description 图片多选，并返回图片数组
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* @param {Number} count 1
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*/
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chooseImg(count=1) {
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return new Promise((resolve,reject)=>{
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let imgArr = [];
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uni.chooseImage({
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count:count,
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sizeType:['compressed'],
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sourceType:['album'],
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success: (res) => {
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let files = res.tempFilePaths
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files.forEach(item=>{
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imgArr.push(item);
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})
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resolve(imgArr);
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}
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})
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})
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},
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/**
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* @description 选择图片并压缩图片
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* @param {Number} cutQuality 80
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* @param {Number} cutWidth 200
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* @param {Number} cutWidth 200
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*/
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chooseCompressImg(cutQuality=80,cutWidth=200,cutHeight=200) {
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return new Promise((resolve, reject) => {
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uni.chooseImage({
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count:1,
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sourceType:['album','camera'],
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extension:['png'],//选择图片类型
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crop:{//图像裁剪参数，设置后 sizeType 失效
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quality:cutQuality,//1~100
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width:cutWidth,
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height:cutHeight,
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resize:false//是否将width和height作为裁剪保存图片真实的像素值。默认值为true。注：设置为false时在裁剪编辑界面显示图片的像素值，设置为true时不显示
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},
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success: (res) => {
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uni.compressImage({
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src: res.tempFilePaths[0],
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quality:100,//压缩质量，范围0～100，数值越小，质量越低，压缩率越高（仅对jpg有效）
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width:cutWidth,
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height:cutHeight,
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rotate:0,//旋转度数，范围0～360
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success: res => {
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resolve(res.tempFilePath)
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}
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})
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}
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})
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})
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},
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/**
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* @description 预览图片
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* @param {Number} current 0
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* @param {Array} imgArr []
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*/
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previewImg(current=0,imgArr=[]) {
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uni.previewImage({
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current:current,
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urls: imgArr,
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indicator:'number',//图片指示器样式，可取值："default" - 底部圆点指示器； "number" - 顶部数字指示器； "none" - 不显示指示器。
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loop:false,//是否可循环预览，默认值为 false
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longPressActions: {
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itemList: ['发送给朋友', '保存图片', '收藏'],
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itemColor:'#000000',//按钮的文字颜色，字符串格式，默认为"#000000"
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success:(data)=> {
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// console.log('选中了第' + (data.tapIndex + 1) + '个按钮,第' + (data.index + 1) + '张图片');
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switch (data.tapIndex){
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case 0:
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// 发送给朋友
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break;
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case 1:
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// 保存图片
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this.saveImg(imgArr[data.index]);
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break;
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case 2:
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// 收藏
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break;
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}
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}
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}
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});
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},
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/**
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* @description 保存图片
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* @param {String} src
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*/
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saveImg(src) {
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// #ifdef APP-PLUS
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uni.saveImageToPhotosAlbum({
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filePath: src,
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success:(resimg)=> {}
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});
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// #endif
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// #ifdef MP-WEIXIN
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let exist = src.slice(0,4);
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if(exist=='http') {
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uni.downloadFile({
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url: src,
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success: (res) => {
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uni.saveImageToPhotosAlbum({
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filePath: res.tempFilePath,
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success: ()=> {},
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fail: () => {
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uni.showToast({title:'保存失败',icon:'error'})
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}
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});
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}
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})
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} else {
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wx.saveFile({
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tempFilePath: src,
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success:(wximg)=> {}
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})
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}
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// #endif
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},
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/**
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* @description 压缩图片
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* @param {String} imgsrc
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* @param {Number} quality 裁剪质量(1~100)，默认：80
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* @param {Number} width 裁剪宽度，默认：不设置
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* @param {Number} height 裁剪宽度，默认：不设置
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* @param {Number} rotate 裁剪角度(0～360)，默认：0
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*/
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compressImg(imgsrc, quality=80, width='', height='', rotate=0) {
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return new Promise((resolve, reject)=>{
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uni.compressImage({
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src: imgsrc,
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quality,//压缩质量，范围0～100，数值越小，质量越低，压缩率越高（仅对jpg有效）
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width,
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height,
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rotate,//旋转度数，范围0～360
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success: res => {
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resolve(res.tempFilePath);
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}
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})
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})
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},
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/**
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* @description 获取图片信息
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* @param {String} src
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*/
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getImgInfo(src) {
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return new Promise((resolve, reject)=>{
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uni.getImageInfo({
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src,
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success: (image)=> {
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resolve(image)
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}
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});
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})
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},
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/**
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* @description 选择并裁剪图片
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* @param {Number} cutQuality 裁剪质量(1~100)，默认：100
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* @param {Number} cutWidth 裁剪宽度，默认：200
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* @param {Number} cutHeight 裁剪高度，默认：200
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* @param {Number} cutRotate 裁剪角度(0～360)，默认：0
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*/
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cutImg(cutQuality=100,cutWidth=200,cutHeight=200, cutRotate=0) {
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return new Promise((resolve, reject)=>{
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uni.chooseImage({
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count:1,
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sourceType:['album','camera'],
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crop:{//图像裁剪参数，设置后 sizeType 失效
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quality:cutQuality,//1~100
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width:cutWidth,
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height:cutHeight,
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resize:false//是否将width和height作为裁剪保存图片真实的像素值。默认值为true。注：设置为false时在裁剪编辑界面显示图片的像素值，设置为true时不显示
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},
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success: (res) => {
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uni.compressImage({
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src: res.tempFilePaths[0],
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quality:100,//压缩质量，范围0～100，数值越小，质量越低，压缩率越高（仅对jpg有效）
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width:cutWidth,
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height:cutHeight,
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rotate:cutRotate,//旋转度数，范围0～360
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success: res => {
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resolve(res.tempFilePath)
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}
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})
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}
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})
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})
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}
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}
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export default imgTools; |