当scale-min="1"时，双指放大后无法缩小到原来图片大小

<movable-area style=“height: 200px; width: 200px; overflow: hidden;” scale-area>

<movable-view style=‘width: 200px; height: 200px;’ direction=“all” bindchange=“onChange” bindscale=“onScale” scale scale-min=“1” scale-max=“10” scale-value=“1”>

<image style=‘width: 100%;’ mode=‘aspectFill’ src=‘https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1523253754&di=ab99ed6a77e7d286fc278f9a8d4653ed&imgtype=jpg&er=1&src=http%3A%2F%2Fdl.bizhi.sogou.com%2Fimages%2F2012%2F02%2F11%2F25025.jpg’></image>

</movable-view>

</movable-area>