codfishzhang

代码如下，将canvas转成base64图片以后，得到的图片是镜像反转的，不是原图 ``` qrcodeBase64Tools.draw(false, () => { wepy.canvasGetImageData({ canvasId: 'qrcodeBase64Tools', x: 0, y: 0, width: qrcodeRes.width, height: qrcodeRes.height }).then((res) => { let pngData = upng.encode([res.data.buffer], res.width, res.height) this.qrcodeBase64 = 'data:image/jpeg;base64,' +...