您好,登錄后才能下訂單哦!
這篇文章主要介紹了微信小程序如何實現手寫簽名的相關知識,內容詳細易懂,操作簡單快捷,具有一定借鑒價值,相信大家閱讀完這篇微信小程序如何實現手寫簽名文章都會有所收獲,下面我們一起來看看吧。
效果
wxml
<view class="sign"> <view class="paper"> <canvas class="handWriting" disable-scroll="true" bindtouchstart="touchstart1" bindtouchmove="touchmove1" canvas-id="handWriting1"> </canvas> </view> <view class="signBtn"> <button size="" type="primary" bindtap="sign1ok">完成簽字</button> <button size="" type="warn" bindtap="reSign1">重新簽字</button> </view> </view> <view class="image" hidden="{{src?false:true}}"> <image src="{{src}}" ></image> </view>
js
Page({ data: { context1: null, hasDraw:false, //默認沒有畫 src:null }, onLoad: function() { var context1 = wx.createCanvasContext('handWriting1'); context1.setStrokeStyle("#000000") context1.setLineWidth(3); this.setData({ context1: context1, }) }, touchstart1: function(e) { var context1 = this.data.context1; context1.moveTo(e.touches[0].x, e.touches[0].y); this.setData({ context1: context1, hasDraw : true, //要簽字了 }); }, touchmove1: function(e) { var x = e.touches[0].x; var y = e.touches[0].y; var context1 = this.data.context1; context1.setLineWidth(3); context1.lineTo(x, y); context1.stroke(); context1.setLineCap('round'); context1.draw(true); context1.moveTo(x, y); }, reSign1: function() { //重新畫 var that = this; var context1 = that.data.context1; context1.draw(); //清空畫布 that.setData({ hasDraw: false, //沒有畫 src: null }); }, sign1ok: function () { var that = this; if(!that.data.hasDraw){ console.log("簽字是空白的 沒有簽字") }else{ var context1 = that.data.context1; context1.draw(true, wx.canvasToTempFilePath({ canvasId: 'handWriting1', success(res) { console.log(res.tempFilePath) //得到了圖片下面自己寫上傳吧 that.setData({ src: res.tempFilePath }) } })) } }, });
wxss
.paper{border:1px solid #dedede; margin: 10px; height:160px } .image{border:1px solid #dedede; margin: 10px; height:160px } .signBtn{display: flex; margin-top:20px;} .signTitle{ text-align: center; font-size:1.2em;margin:10px auto;} .handWriting{width:100%} .image image{width:100%; height:160px }
關于“微信小程序如何實現手寫簽名”這篇文章的內容就介紹到這里,感謝各位的閱讀!相信大家對“微信小程序如何實現手寫簽名”知識都有一定的了解,大家如果還想學習更多知識,歡迎關注億速云行業資訊頻道。
免責聲明:本站發布的內容(圖片、視頻和文字)以原創、轉載和分享為主,文章觀點不代表本網站立場,如果涉及侵權請聯系站長郵箱:is@yisu.com進行舉報,并提供相關證據,一經查實,將立刻刪除涉嫌侵權內容。