组件：canvas 微信版本：8.0.31 基础库：2.29.1 <view class="autograph-container" style="width: {{ width }}; height: {{ height }}; display: block;">   <canvas class="autograph-canvas" type="2d" disable-scroll style="width: 100%; height: 100%; display: block;" bindtouchstart="handleTouchStart" bindtouchmove="handleTouchMove" bindtouchend="handleTouchEnd" bindtouchcancel="handleTouchEnd" binderror="handleTouchEnd"></canvas> </view>