iOS-UIViewContentMode枚举

2021-04-17 本文已影响0人 Imkata

typedef NS_ENUM(NSInteger, UIViewContentMode) {

// 默认属性,缩放图片至图片填充整个UIImageView
    UIViewContentModeScaleToFill,

// 按照"图片的宽高"比例缩放图片至图片的宽度或者高度和UIImageView一样,并且让整个图片都在UIImageView中,然后居中显示
    UIViewContentModeScaleAspectFit,      // contents scaled to fit with fixed aspect. remainder is transparent

// 按照"图片的宽高"比例缩放图片至图片的宽度和高度填充整个UIImageView,然后居中显示,图片可能会溢出
    UIViewContentModeScaleAspectFill,     // contents scaled to fill with fixed aspect. some portion of content may be clipped.

// 调用setNeedsDisplay方法时,就会重新渲染图片
    UIViewContentModeRedraw,              // redraw on bounds change (calls -setNeedsDisplay)
    UIViewContentModeCenter,              // contents remain same size. positioned adjusted.
    UIViewContentModeTop,
    UIViewContentModeBottom,
    UIViewContentModeLeft,
    UIViewContentModeRight,
    UIViewContentModeTopLeft,
    UIViewContentModeTopRight,
    UIViewContentModeBottomLeft,
    UIViewContentModeBottomRight,
};