281 lines
8.3 KiB
JavaScript
281 lines
8.3 KiB
JavaScript
// pages/poster/poster.js
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import request from '../../utils/request.js';
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const app = getApp();
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Page({
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data: {
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qrcodeUrl: '',
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isLoading: false,
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showPosterCanvas: false,
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posterImageTemp: '',
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avatarUrl: '',
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uid: '',
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nickName: '',
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},
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onLoad() {
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this.loadQRCodeFromCache();
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this.loadUserInfo();
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},
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onShow() {
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this.registerNotificationComponent();
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},
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registerNotificationComponent() {
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const notificationComp = this.selectComponent('#global-notification');
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if (notificationComp && notificationComp.showNotification) {
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app.globalData.globalNotification = {
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show: (data) => notificationComp.showNotification(data),
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hide: () => notificationComp.hideNotification()
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};
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}
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},
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loadQRCodeFromCache() {
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try {
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const relativeUrl = wx.getStorageSync('haibao_url');
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if (relativeUrl) {
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const fullUrl = this.getFullImageUrl(relativeUrl);
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this.setData({ qrcodeUrl: fullUrl });
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} else {
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this.setData({ qrcodeUrl: '' });
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}
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} catch (error) {
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console.error('读取缓存失败', error);
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}
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},
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loadUserInfo() {
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const touxiang = wx.getStorageSync('touxiang');
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const ossUrl = app.globalData.ossImageUrl || '';
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const defaultAvatar = ossUrl + (app.globalData.morentouxiang || 'avatar/default.jpg');
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let avatarUrl = defaultAvatar;
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if (touxiang && typeof touxiang === 'string' && touxiang.trim() !== '') {
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avatarUrl = this.getFullImageUrl(touxiang);
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}
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const uid = wx.getStorageSync('uid') || '';
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let nickName = app.globalData.nicheng || wx.getStorageSync('nicheng') || '管事';
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this.setData({ avatarUrl, uid, nickName });
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},
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getFullImageUrl(url) {
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if (!url) return '';
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const ossUrl = app.globalData.ossImageUrl || '';
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return url.startsWith('http') ? url : ossUrl + url;
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},
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refreshQRCode() {
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if (this.data.isLoading) return;
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this.setData({ isLoading: true });
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request({
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url: '/peizhi/guanshiewm',
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method: 'POST',
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}).then(res => {
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if (res.data && res.data.code === 0) {
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const relativeUrl = res.data.data.url;
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if (relativeUrl) {
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wx.setStorageSync('haibao_url', relativeUrl);
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const fullUrl = this.getFullImageUrl(relativeUrl);
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this.setData({ qrcodeUrl: fullUrl });
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wx.showToast({ title: '获取成功', icon: 'success' });
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} else {
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wx.showToast({ title: '返回数据异常', icon: 'none' });
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}
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} else {
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wx.showToast({ title: res.data.msg || '获取失败', icon: 'none' });
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}
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}).catch(err => {
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console.error('获取海报失败', err);
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wx.showToast({ title: '网络错误', icon: 'none' });
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}).finally(() => {
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this.setData({ isLoading: false });
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});
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},
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// 🔥【修改】保存二维码到相册（先下载网络图片）
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saveToAlbum() {
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if (!this.data.qrcodeUrl) {
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wx.showToast({ title: '暂无二维码', icon: 'none' });
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return;
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}
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wx.showLoading({ title: '保存中...', mask: true });
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wx.downloadFile({
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url: this.data.qrcodeUrl,
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success: (res) => {
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wx.hideLoading();
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if (res.statusCode === 200) {
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// 调用已有的保存函数（传入临时路径）
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this.downloadAndSave(res.tempFilePath);
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} else {
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wx.showToast({ title: '下载失败', icon: 'none' });
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}
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},
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fail: (err) => {
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wx.hideLoading();
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console.error('下载二维码失败', err);
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wx.showToast({ title: '下载失败', icon: 'none' });
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}
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});
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},
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generateMyPoster() {
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if (!this.data.qrcodeUrl) {
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wx.showToast({ title: '请先生成二维码', icon: 'none' });
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return;
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}
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wx.showLoading({ title: '生成海报中...', mask: true });
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const ossUrl = app.globalData.ossImageUrl || '';
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const bgUrl = ossUrl + 'beijing/haibaobeijing.jpg';
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const urls = [bgUrl, this.data.qrcodeUrl, this.data.avatarUrl];
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const promises = urls.map(url => this.loadImage(url));
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Promise.all(promises)
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.then((images) => {
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wx.hideLoading();
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this.setData({ showPosterCanvas: true }, () => {
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setTimeout(() => {
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this.drawPoster(images[0], images[1], images[2]);
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}, 200);
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});
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})
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.catch((err) => {
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wx.hideLoading();
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wx.showToast({ title: '图片加载失败', icon: 'none' });
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console.error('图片加载失败', err);
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});
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},
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loadImage(url) {
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return new Promise((resolve, reject) => {
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wx.getImageInfo({
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src: url,
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success: (res) => resolve(res.path),
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fail: reject
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});
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});
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},
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drawPoster(bgPath, qrPath, avatarPath) {
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const ctx = wx.createCanvasContext('posterCanvas', this);
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const query = wx.createSelectorQuery().in(this);
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query.select('.poster-canvas').boundingClientRect(rect => {
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if (!rect) {
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wx.showToast({ title: '画布获取失败', icon: 'none' });
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return;
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}
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const canvasWidth = rect.width;
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const canvasHeight = rect.height;
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// 1. 绘制背景
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ctx.drawImage(bgPath, 0, 0, canvasWidth, canvasHeight);
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const qrSize = 100;
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const margin = 5;
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const qrX = canvasWidth - qrSize - margin;
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const qrY = canvasHeight - qrSize - margin;
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ctx.drawImage(qrPath, qrX, qrY, qrSize, qrSize);
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const avatarSize = 60;
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const avatarX = margin + 20;
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const avatarY = canvasHeight - avatarSize - margin;
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ctx.save();
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ctx.beginPath();
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ctx.arc(avatarX + avatarSize/2, avatarY + avatarSize/2, avatarSize/2, 0, 2 * Math.PI);
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ctx.clip();
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ctx.drawImage(avatarPath, avatarX, avatarY, avatarSize, avatarSize);
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ctx.restore();
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ctx.setFontSize(16);
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ctx.setFillStyle('#333333');
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ctx.setTextAlign('left');
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let nick = this.data.nickName || '管事';
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if (nick.length > 3) {
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nick = nick.substring(0, 3) + '...';
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}
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const nameText = nick;
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const textX = avatarX + avatarSize + 8;
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const textY = avatarY + avatarSize/2 + 6;
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ctx.fillText(nameText, textX, textY);
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ctx.setFontSize(18);
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ctx.setFillStyle('#ffaa00');
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ctx.setTextAlign('left');
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const slogan = '快来加入我们 ✦';
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const sloganX = avatarX;
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const sloganY = avatarY - 12;
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ctx.fillText(slogan, sloganX, sloganY);
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ctx.draw(false, () => {
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wx.canvasToTempFilePath({
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canvasId: 'posterCanvas',
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success: (res) => {
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this.setData({ posterImageTemp: res.tempFilePath });
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},
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fail: (err) => {
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console.error('生成海报临时文件失败', err);
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}
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}, this);
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});
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}).exec();
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},
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savePoster() {
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if (!this.data.posterImageTemp) {
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wx.showToast({ title: '海报尚未生成', icon: 'none' });
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return;
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}
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this.downloadAndSave(this.data.posterImageTemp);
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},
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hidePoster() {
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this.setData({ showPosterCanvas: false, posterImageTemp: '' });
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},
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downloadAndSave(filePath) {
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wx.getSetting({
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success: (res) => {
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if (!res.authSetting['scope.writePhotosAlbum']) {
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wx.authorize({
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scope: 'scope.writePhotosAlbum',
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success: () => {
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this._saveImage(filePath);
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},
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fail: () => {
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wx.showModal({
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title: '提示',
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content: '需要您授权保存到相册',
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success: (modalRes) => {
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if (modalRes.confirm) {
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wx.openSetting();
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}
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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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this._saveImage(filePath);
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}
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}
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});
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},
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_saveImage(filePath) {
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wx.saveImageToPhotosAlbum({
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filePath: filePath,
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success: () => {
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wx.showToast({ title: '保存成功', icon: 'success' });
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},
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fail: (err) => {
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console.error('保存失败', err);
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wx.showToast({ title: '保存失败', icon: 'none' });
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}
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});
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},
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}); |