var avatar = this.data.avatar
this.getcanvas(logo, main, explain, code, avatar)
},
// 获取海报...画布设置宽700 高800
// 以此传入图标,主体图片,标题文字,小程序二维码
getcanvas(logo, main, explain, code, avatar) {
wx.showLoading...primary_height = ""
// logo所需
let mark = ""
let mark_width = ""
let mark_height = ""
// 小程序码所需...#666')
ctx.fillText(explain, this.data.canvas_width / 2, 500)
ctx.fillText('你的好友分享给你的小程序...', this.data.canvas_width / 2, 550)
// 小程序二维码
ctx.drawImage(yard, this.data.canvas_width