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@@ -11,16 +11,32 @@ Page({ |
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teljpgUrl: imgurl.teljpg.url, |
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share01: imgurl.share01.url, |
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actUrl: imgurl.act.url, |
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poster:'./../../../assets/images/picture.png', |
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page: 1, |
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imglist:null, |
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shopVoList:[], |
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couponList:[],//活动劵列表 |
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data:{ |
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currentTab: 0, |
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isshare:false |
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isshare:false, |
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showpost: false, |
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imgHeight: 0, |
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}, |
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id:null |
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id:null, |
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windowWidth: 0, |
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windowHeight: 0, |
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totalHeight: 0, |
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canvasScale: 1.0,// 画布放大的倍数,因为如果保存的是一倍的分享图片的话,分享图会有点虚。所以保存的时候,canvasScale设置为2.0,wxss 里面的left: 500%;打开注释。就可保存两倍的分享图 |
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}, |
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/** |
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* 分享海报的生成 |
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*/ |
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//关闭海报 |
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closePoste: function() { |
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this.setData({ |
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showpost: false |
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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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@@ -37,7 +53,257 @@ Page({ |
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currentTab: 0 |
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}) |
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} |
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// 获取到屏幕的宽高等信息 |
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wx.getSystemInfo({ |
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success: function(res) { |
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that.setData({ |
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windowWidth: res.windowWidth, |
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windowHeight: res.windowHeight |
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}) |
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} |
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}) |
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}, |
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/** |
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* 绘制分享海报 |
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*/ |
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begainDrawShareImage() { |
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var that = this |
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// 适配屏幕 |
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let scale = this.data.windowWidth / 375.0 |
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this.setData({ totalHeight: 767* scale}) |
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// 获取Canvas |
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let ctx = wx.createCanvasContext('myCanvas') |
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// 放大 因为不放大的话,生成的分享图会模糊。暂时先注释 |
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ctx.scale(this.data.canvasScale, this.data.canvasScale) |
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// 绘制主背景白色 |
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ctx.setFillStyle('#ffffff') |
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ctx.fillRect(0, 0, this.data.windowWidth, this.data.totalHeight) |
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ctx.draw() |
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// 首先要绘制顶部的背景图片,因为它在最底层,然后才能绘制其他内容 |
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let topImageWidth = parseInt(375 * scale) // 因为小数有时候会请求不到图片,所以转成int |
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let topImageHeight = parseInt(250 * scale) |
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let src1 = this.data.data.merchantImgUrl + `?imageView/2/w/${topImageWidth}/h/${topImageHeight}` |
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wx.getImageInfo({ |
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src: src1, |
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success: function(res) { |
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ctx.drawImage(res.path, 0, 0, topImageWidth, topImageHeight) |
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// 覆盖黑色蒙层 |
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ctx.setFillStyle('rgba(0,0,0,0.3)') |
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ctx.fillRect(0, 0, topImageWidth, topImageHeight) |
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ctx.draw(true) |
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that.drawOtherContent(ctx, scale) |
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that.drawOtherImage(ctx,scale) |
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} |
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}) |
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}, |
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// 绘制除了图片之外的剩余内容 |
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drawOtherContent(ctx, scale) { |
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// 绘制中间的灰色背景 |
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ctx.setFillStyle('rgba(246,246,246,1)') |
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//(x轴,y轴,宽,高) |
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ctx.fillRect(14 * scale, 230 * scale, 347 * scale, 58 * scale) |
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//name |
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ctx.setFillStyle('white'); |
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ctx.setFontSize(30 * scale); |
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this.canvasTextAutoLine(this.data.data.merchantName, ctx, 20 * scale, 200 * scale, 30 * scale, 258 * scale, 1) |
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// address |
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ctx.setFillStyle('#000'); |
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ctx.setFontSize(18 * scale); |
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this.canvasTextAutoLine("地址:"+this.data.data.shopVoList[0].floorName+this.data.data.shopVoList[0].buildingName+this.data.data.shopVoList[0].shopNumber, ctx, 20 * scale, 270 * scale, 22 * scale, 305 * scale, 1) |
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// this.drawNormalText(ctx, '探索新鲜好去处', 82 * scale, 596 * scale, 14 * scale, '#3C3C3C', 'left', 'middle', scale); |
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// this.drawNormalText(ctx, '长按右侧小程序码', 82 * scale, 620 * scale, 12 * scale, '#9A9CAC', 'left', 'middle', scale); |
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// this.drawNormalText(ctx, '查看更多店铺信息和热评', 82 *scale,635*scale, 12*scale, '#9A9CAC', 'left', 'middle', scale); |
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ctx.draw(true) |
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}, |
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// 绘制活动图片 |
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drawOtherImage(ctx, scale) { |
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let that = this |
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// 如果该商户有活动商品 |
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if(this.data.couponList.length>0){ |
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let cotentImageWidth = parseInt(136 * scale) |
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let cotentImageHeight = parseInt(136 * scale) |
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for (let i = 0; i < this.data.couponList.length; i++){ |
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let imageItem = this.data.couponList[i].coverImg |
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let src1 = imageItem + `?imageView/2/w/${cotentImageWidth}/h/${cotentImageHeight}` |
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wx.getImageInfo({ |
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src: src1, |
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success: function (res) { |
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ctx.drawImage(res.path, 15 * scale + i*180*scale, 300 * scale, cotentImageWidth, cotentImageHeight) |
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ctx.draw(true) |
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} |
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}) |
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} |
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//没有活动商品生成小程序码 |
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}else{ |
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if(this.data.qrCode){ |
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let coImageWidth = parseInt(336 * scale) |
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let coImageHeight = parseInt(336 * scale) |
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let src1 = this.data.qrCode + `?imageView/2/w/${topImageWidth}/h/${topImageHeight}` |
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wx.getImageInfo({ |
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src: src1, |
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success: function(res) { |
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ctx.drawImage(res.path, 0, 0, coImageWidth, coImageHeight) |
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ctx.draw(true) |
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} |
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}) |
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} |
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} |
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// icon |
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// ctx.setShadow(0, 8 * scale, 20, 'rgba(0,0,0,0.1)') |
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// ctx.drawImage('./../../../assets/images/download.png', 13 * scale, 590 * scale, 54*scale, 54*scale) |
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// ctx.setShadow(0, 0, 0, 'white') |
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// ctx.draw(true) |
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}, |
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// 绘制只有一行的文字 |
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drawNormalText(ctx, str, x, y, font, style, align, baseLine) { |
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ctx.setFontSize(font); |
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ctx.setFillStyle(style); |
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ctx.setTextAlign(align); |
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ctx.setTextBaseline(baseLine); |
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ctx.fillText(str, x, y); |
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}, |
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/* |
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* 绘制多行文本,自动换行,超出添加... |
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* |
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str:要绘制的字符串 |
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canvas:canvas对象 |
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initX:绘制字符串起始x坐标 |
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initY:绘制字符串起始y坐标 |
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lineHeight:字行高,自己定义个值即可 |
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maxWidth: 文本最大宽度 |
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row: 最大行数 |
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*/ |
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canvasTextAutoLine: function(str, ctx, initX, initY, lineHeight, maxWidth, row = 1) { |
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var lineWidth = 0; |
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var lastSubStrIndex = 0; |
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var currentRow = 1; |
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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 > maxWidth) { |
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currentRow++; |
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let newStr = str.substring(lastSubStrIndex, i) |
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if (currentRow > row && str.length > i) { |
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newStr = str.substring(lastSubStrIndex, i - 2) + '...' |
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} |
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ctx.fillText(newStr, initX, initY); |
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initY += lineHeight; |
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lineWidth = 0; |
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lastSubStrIndex = i; |
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if (currentRow > row) { |
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break; |
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} |
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} |
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if (i == str.length - 1) { |
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ctx.fillText(str.substring(lastSubStrIndex, i + 1), initX, initY); |
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} |
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} |
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}, |
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// 保存图片 |
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saveImage() { |
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var _this = this |
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var image = _this.data.poster |
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wx.getImageInfo({ |
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src: image, |
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success: function (sres) { |
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var imgSrc = sres.path; |
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wx.showLoading({ |
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title: '保存中', |
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mask: true |
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}) |
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setTimeout(function () { |
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wx.saveImageToPhotosAlbum({ |
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filePath: imgSrc, |
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success: function (data) { |
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// wx.showToast({ |
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// title: '保存成功', |
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// icon: 'success', |
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// duration: 2000 |
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// }) |
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console.log(data) |
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wx.showModal({ |
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title: '友情提示', |
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content: '图片保存成功,请到相册查找分享', |
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success(res) { |
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if (res.confirm) { |
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} else if (res.cancel) { |
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} |
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} |
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}) |
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}, |
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fail: function (err) { |
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// console.log(err); |
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if (err.errMsg === "saveImageToPhotosAlbum:fail auth deny") { |
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console.log("当初用户拒绝,再次发起授权") |
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wx.openSetting({ |
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success(settingdata) { |
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console.log(settingdata) |
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if (settingdata.authSetting['scope.writePhotosAlbum']) { |
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console.log('获取权限成功,给出再次点击图片保存到相册的提示。') |
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} else { |
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console.log('获取权限失败,给出不给权限就无法正常使用的提示') |
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} |
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} |
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}) |
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} |
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}, |
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complete(res) { |
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console.log(res); |
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} |
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}) |
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wx.hideLoading(); |
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}, 2000) |
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} |
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}) |
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}, |
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/** |
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* 获取access_token |
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*/ |
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getaccess_token:function(access_token){ |
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wx.request({ |
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url:"https://api.weixin.qq.com/wxa/getwxacode?access_token=" + access_token, |
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method: 'POST', |
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data: { |
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path: 'pages/index/index', // 必须是已经发布的小程序存在的页面(否则报错) |
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width: 430, |
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auto_color: false,// 自动配置线条颜色,如果颜色依然是黑色,则说明不建议配置主色调 |
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line_color: {"r":"0","g":"0","b":"0"} // auto_color 为 false 时生效,使用 rgb 设置颜色 例如 {"r":"xxx","g":"xxx","b":"xxx"} 十进制表示 |
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}, |
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success: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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* 拨打电话 |
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*/ |
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@@ -68,6 +334,23 @@ Page({ |
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this.setData({ |
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currentTab: e.detail.current |
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}); |
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}, |
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/** |
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* 隐藏分享海报 |
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*/ |
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hideposter:function(){ |
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this.setData({ |
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showpost: false, |
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}) |
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}, |
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/** |
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* 显示分享海报 |
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*/ |
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showPoster:function(){ |
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this.setData({ |
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showpost: true, |
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}) |
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this.begainDrawShareImage(); |
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}, |
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//点击切换 |
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clickTab: function (e) { |
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@@ -127,7 +410,7 @@ Page({ |
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data: data |
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}).then(res => { |
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that.setData({ |
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couponList: res.data, |
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couponList: res.data.list, |
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}) |
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}) |
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.catch(err => { |
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@@ -154,7 +437,6 @@ Page({ |
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}, |
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onShareAppMessage: function (res) { |
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debugger |
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var that = this; |
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var shareObj = { |
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title: that.data.data.title, |
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