Page({
data: {
context1: null,
hasDraw:false, //默认没有画
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, //要签字了
});
},
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() { //重新画
var that = this;
var context1 = that.data.context1;
context1.draw(); //清空画布
that.setData({
hasDraw: false, //没有画
src: null
});
},
sign1ok: function () {
var that = this;
if(!that.data.hasDraw){
console.log("签字是空白的 没有签字")
}else{
var context1 = that.data.context1;
context1.draw(true, wx.canvasToTempFilePath({
canvasId: handWriting1,
success(res) {
console.log(res.tempFilePath) //得到了图片下面自己写上传吧
that.setData({
src: res.tempFilePath
})
}
}))
}
},
});
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