属性: | 功能: |
---|---|
Aspect Mode | 如何调整矩形的大小来强制实施宽高比。 |
None | 不让矩形适应宽高比。 |
Width Controls Height | 根据宽度自动调整高度。 |
Height Controls Width | 根据高度自动调整宽度。 |
Fit In Parent | 自动调整宽度、高度、位置和锚点,使矩形适应父项的矩形,同时保持宽高比。父矩形中可能有一些空间不会由此矩形覆盖。 |
Envelope Parent | 自动调整宽度、高度、位置和锚点,使矩形覆盖父项的整个区域,同时保持宽高比。此矩形可能比父矩形延伸更广。 |
Aspect Ratio | 要强制实施的宽高比。这是宽度除以高度的比值。 |
宽高比适配器充当布局控制器,可用于控制其自身布局元素的大小。宽高比适配器可以调整高度来适应宽度或反之,也可以使元素在其父项内部适应或包裹其父项。宽高比适配器不考虑布局信息,例如最小大小和偏好大小。
值得注意的是,当调整矩形变换的大小时(无论是通过宽高比适配器还是其他工具),大小调整是围绕轴心进行的。这意味着可使用轴心来控制矩形的对齐。例如,位于顶部中央位置的轴心将使矩形均匀延伸到两侧,并仅向下延伸,同时保持顶部边缘位置不变。
AspectRatioFitter
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