442 lines
14 KiB
JavaScript
442 lines
14 KiB
JavaScript
const app = getApp();
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/*
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小程序利用canvas实现一键保存图片功能
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https://blog.csdn.net/Charles_Tian/article/details/80910616 */
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Page({
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/**
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* 页面的初始数据
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*/
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data: {
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cname: '',
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renwu: '',
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yuyan: '',
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fan: '',
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xg: '',
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imgurl: '', //人物头像
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canvasHidden: true, //设置画板的显示与隐藏，画板不隐藏会影响页面正常显示
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wxappName: '页面生成图片', //小程序名称
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shareImgPath: '',
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screenWidth: '', //设备屏幕宽度
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shareImgSrc: '',
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},
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infoShow: function () {
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var that = this;
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wx.request({
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url: app.globalData.api_url + 'rest/findProgram/36',
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method: 'GET',
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header: { 'Accept': 'application/json' },
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success: function (res) {
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WxParse.wxParse('article_content', 'html', res.data.errMsg.s_remark, that, 5) //获取详细信息 res.data.content详细信息数据
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that.setData({
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info: res.data.errMsg
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// article_content: WxParse.wxParse('article_content', 'html', res.data.errMsg.n_remark, that, 5) //获取详细信息 res.data.content详细信息数据
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})
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wx.setStorageSync('cmsinfo', res.data.errMsg)
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},
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//接口调用失败的回调函数
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fail: function (res) {
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var newData = wx.getStorageInfoSync('cmsinfo')
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if (newData) {
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obj.setData({ info: newData })
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}
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that.setData({ toastHidden: false, msg: '当前网格异常，请稍后再试' })
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},
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//口调用结束的回调函数（调用成功、失败都会执行）
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complete: function () {
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//显示出加载中的提示
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that.setData({ loadHidden: true })
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}
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})
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},
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/**
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* 生命周期函数--监听页面加载
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*/
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onLoad: function (options) {
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this.infoShow();
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var that = this;
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wx.getImageInfo({
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src: '../../images/bj.png',
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success: function (res) {
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console.log(res)
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that.setData({
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shareImgSrc: '../../' + res.path
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});
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}
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})
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wx.getImageInfo({
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src: '../../images/11.png',
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success: function (res) {
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console.log(res)
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that.setData({
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shareImgPath: '../../' + res.path
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});
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}
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})
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//获取用户设备信息，屏幕宽度
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wx.getSystemInfo({
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success: res => {
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that.setData({
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screenWidth: res.screenWidth
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})
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console.log(that.data.screenWidth)
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}
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})
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that.setData({
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cname: options.id
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});
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var yuyan = new Array('多注意外表，近期将有桃花运', '不要留钱在手，近期将走财运', '留意新认识的人，将遇改变人生的贵人', '走路留意，可能会走狗屎运', '放开吃喝，三个月内你不会发胖', '身边有人正在准备一个惊喜给你');
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var c = Math.floor(Math.random() * 6);
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var renwu = new Array('富察容音', '弘历', '魏璎珞', '娴妃', '高贵妃', '叶太医', '富察·傅恒', '海兰察', '陆晚晚', '明玉');
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var a = Math.floor(Math.random() * 6);
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var fan = new Array('因皇子去世一直耿耿于怀，内心苦闷。富察容音常有胸闷、乳房疼痛的症状，是情志失意导致的乳腺问题。', '前朝政务繁多，后宫妃嫔争宠，后宫女人几乎都有乳腺困扰，皇上命叶太医制出乳丹，帮助解决嫔妃的乳腺问题。', '长期想着复仇，情志不畅，所以月经紊乱，乳房有肿块都不知道。幸得叶太医乳丹相助，帮其解决乳腺问题。', '不能保家人周全，无奈黑化，也一直深受乳腺问题的烦恼。', '唯恐失去皇上宠爱，天天苦于宫斗，饱受乳腺问题烦恼。', '苦于没有疑难杂症给他医治，后被皇上指派解决嫔妃的乳腺问题，研发出乳丹。', '因为没有和心爱的女人在一起，从而抱恨终身。', '心爱的女人在成亲当天自杀，让海兰察心痛一生。', '自身实力与家庭背景都很薄弱，不求富贵，只求安保。', '因体内被纯贵妃扎的针重伤加之受顺嫔挑唆，以金剪插心，自尽而亡。');
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var xg = new Array('内心温柔，心胸宽广，最终别人，也能得到别人尊重。', '爱憎分明、内心骄傲，做人做事不会选择将就。', '客观理智、内心透彻，内心善良富有正义，重视承诺。', '追求单纯但是内心又自卑，遇到失望的事情，会变得偏执。', '喜形于色，为人处世情绪化，从不压抑内心想法。', '本是江湖游医却救阿哥、激皇上（治病）、怼太医，萌萌的外表下藏着一颗济世救人的医者仁心。', '深得皇上的宠爱和重视，表面上看是一个冷清的人，实际上是一个专情热血的男子。', '心性善良，智勇双全，屡经战阵，注重研习兵法，受众尊崇的将领。', '温婉贤淑的大家闺秀，才貌出众，天性善良，不争名利，清新脱俗。', '性格直爽，忠肝义胆，说话毒舌但是心地善良。');
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var img = new Array('http://login.pink333.com/uploads/20180828/4c9b626b59d6a0b38a03089d1da4d906.jpg',
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'http://login.pink333.com/uploads/20180828/d942b0f1bccc4e6c6081bd5f3398fd4e.jpg',
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'http://login.pink333.com/uploads/20180828/29af4184e336f82a38ecd3de07a01569.jpg',
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'http://login.pink333.com/uploads/20180828/eacea6d98f57fdcda835003fd8734c14.jpg',
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'http://login.pink333.com/uploads/20180828/9416f7ac87e99efd8a179dedec15d0c0.jpg',
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'http://login.pink333.com/uploads/20180828/1ee16bba3d950f8fce32d8e6d01025b3.jpg',
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'http://login.pink333.com/uploads/20180828/2114ed95f319b23afa498b6064b90517.jpg',
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'http://login.pink333.com/uploads/20180828/07682aa82440bd48bec9cfcdf8830fb0.jpg',
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'http://login.pink333.com/uploads/20180828/2f71cd25f32922035c08071042cda134.jpg',
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'http://login.pink333.com/uploads/20180828/ff6f46a6ad3c15200f1d380aa1ccde25.jpg');
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if (a == 0) {
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that.setData({
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fan: fan[0],
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xg: xg[0],
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});
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wx.getImageInfo({
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src: '../../images/fcry.png',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 1) {
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that.setData({
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fan: fan[1],
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xg: xg[1]
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});
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wx.getImageInfo({
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src: '../../images/hl.png',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 2) {
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that.setData({
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fan: fan[2],
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xg: xg[2]
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});
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wx.getImageInfo({
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src: '../../images/wyl.png',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 3) {
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that.setData({
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fan: fan[3],
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xg: xg[3]
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});
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wx.getImageInfo({
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src: '../../images/xf.jpg',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 4) {
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that.setData({
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fan: fan[4],
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xg: xg[4]
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});
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wx.getImageInfo({
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src: '../../images/ggf.png',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 5) {
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that.setData({
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fan: fan[5],
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xg: xg[5]
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});
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wx.getImageInfo({
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src: '../../images/yty.png',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 6) {
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that.setData({
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fan: fan[6],
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xg: xg[6]
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});
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wx.getImageInfo({
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src: '../../images/fcfh.jpg',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 7) {
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that.setData({
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fan: fan[7],
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xg: xg[7]
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});
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wx.getImageInfo({
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src: '../../images/hnc.png',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 8) {
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that.setData({
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fan: fan[8],
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xg: xg[8]
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});
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wx.getImageInfo({
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src: '../../images/lww.png',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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if (a == 9) {
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that.setData({
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fan: fan[9],
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xg: xg[9]
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});
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wx.getImageInfo({
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src: '../../images/my.png',
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success: function (res) {
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console.log(res)
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that.setData({
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imgurl: '../../' + res.path
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});
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}
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})
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}
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that.setData({
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yuyan: yuyan[c],
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renwu: renwu[a]
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});
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},
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/**
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* 生命周期函数--监听页面初次渲染完成
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*/
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onReady: function () {
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var that = this;
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var context = wx.createCanvasContext('share')
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context.setStrokeStyle("#00ff00")
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context.setLineWidth(1)
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context.stroke()
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context.draw(false, this.getTempFilePath)
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},
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//获取临时路径
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getTempFilePath: function () {
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wx.canvasToTempFilePath({
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canvasId: 'share',
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success: (res) => {
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this.setData({
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shareTempFilePath: 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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* 绘制多行文本，考虑到内容过多可能会显示不全，这里增加一个函数
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*/
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drawText: function (ctx, str, leftWidth, initHeight, titleHeight, canvasWidth) {
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var lineWidth = 0;
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var lastSubStrIndex = 0; //每次开始截取的字符串的索引
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for (let i = 0; i < str.length; i++) {
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lineWidth += ctx.measureText(str[i]).width;
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if (lineWidth > canvasWidth) {
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ctx.fillText(str.substring(lastSubStrIndex, i), leftWidth, initHeight); //绘制截取部分
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initHeight += 16; //16为字体的高度
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lineWidth = 0;
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lastSubStrIndex = i;
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titleHeight += 30;
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}
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if (i == str.length - 1) { //绘制剩余部分
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ctx.fillText(str.substring(lastSubStrIndex, i + 1), leftWidth, initHeight);
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}
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}
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// 标题border-bottom 线距顶部距离
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titleHeight = titleHeight + 10;
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return titleHeight
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},
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//保存至相册
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saveImageToPhotosAlbum: function () {
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var that = this;
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var unit = that.data.screenWidth / 375
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//2. canvas绘制文字和图片
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const ctx = wx.createCanvasContext('share');
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var bgImgPath = that.data.shareImgSrc;
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var fanstr = '前世烦恼：' + that.data.fan;
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var rwxg = '人物性格：' + that.data.xg;
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//这里是把页面上的数据写入到画布里，具体的坐标需要各位自行调整
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ctx.drawImage(bgImgPath, 0, 0, 375, 580);
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ctx.drawImage(that.data.shareImgPath, 50, 450, 284, 80);
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ctx.drawImage(that.data.imgurl, 146, 100, 100, 100);
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ctx.setFontSize(13)
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ctx.setFillStyle('#5e7436')
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ctx.fillText('姓名：' + that.data.cname, 50, 241)
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ctx.fillText('人物匹配：' + that.data.renwu, 50, 271);
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ctx.fillText('近期预言：' + that.data.yuyan, 50, 300);
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this.drawText(ctx, fanstr, 50, 330, 145, 280);
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this.drawText(ctx, rwxg, 50, 400, 145, 280);
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//ctx.fillText('前世烦恼：' + that.data.fan, 50, 330);
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//ctx.fillText('人物性格：' + that.data.xg, 50, 360);
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ctx.stroke()
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ctx.draw(false, function () {
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// 3. canvas画布转成图片
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wx.canvasToTempFilePath({
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x: 0,
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y: 0,
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width: 375,
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height: 580,
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destWidth: 375,
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destHeight: 580,
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canvasId: 'share',
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success: function (res) {
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console.log(res);
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that.setData({
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shareImgSrc: res.tempFilePath
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})
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if (!res.tempFilePath) {
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wx.showModal({
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title: '提示',
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content: '图片绘制中，请稍后重试',
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showCancel: false
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})
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}
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//4. 当用户点击分享到朋友圈时，将图片保存到相册
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wx.saveImageToPhotosAlbum({
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filePath: that.data.shareImgSrc,
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success(res) {
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console.log(res);
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wx.showModal({
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title: '图片保存成功',
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content: '图片成功保存到相册了，去发圈噻~',
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showCancel: false,
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confirmText: '好哒',
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confirmColor: '#72B9C3',
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success: function (res) {
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if (res.confirm) {
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console.log('用户点击确定');
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}
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that.setData({
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canvasHidden: true
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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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fail: function (res) {
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console.log(res)
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}
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})
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});
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},
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/**
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* 生命周期函数--监听页面显示
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*/
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onShow: function () {
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const that = this;
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wx.downloadFile({
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url: that.data.shareImgSrc,
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success: function (res) {
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that.data.shareImgSrc = res.tempFilePath
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}, fail: function (res) {
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}
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})
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},
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/**
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* 生命周期函数--监听页面隐藏
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*/
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onHide: function () {
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},
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/**
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* 生命周期函数--监听页面卸载
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*/
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onUnload: function () {
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},
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/**
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* 页面相关事件处理函数--监听用户下拉动作
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*/
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onPullDownRefresh: function () {
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},
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/**
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* 页面上拉触底事件的处理函数
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*/
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onReachBottom: function () {
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},
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/**
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* 用户点击右上角分享
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*/
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// onShareAppMessage: function () {
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// }
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}) |