微信小程序context.drawImage图片显示不全
var a = wx.createCanvasContext("myCanvas");
a.drawImage(that.data.imageSrc, 0, 0, 400, 400);
a.draw(true,function () {
wx.canvasToTempFilePath({
x: 10,
y: 10,
width: 300,
height: 200,
destWidth: 600,
destHeight: 300,
quality: 1,
canvasId: "myCanvas",
success: function (t) {
},
fail: function() {
}
});
});
