用于 iOS 的内部阴影 UIView/CALayer。

用法

YIInnerShadowView* innerShadowView = [[YIInnerShadowView alloc] initWithFrame:frame];
innerShadowView.shadowRadius = 5;
innerShadowView.shadowMask = YIInnerShadowMaskVertical;
[self.view addSubview:innerShadowView];

YIInnerShadowMask

typedef enum {
    YIInnerShadowMaskNone       = 0,
    YIInnerShadowMaskTop        = 1 << 1,
    YIInnerShadowMaskBottom     = 1 << 2,
    YIInnerShadowMaskLeft       = 1 << 3,
    YIInnerShadowMaskRight      = 1 << 4,
    YIInnerShadowMaskVertical   = YIInnerShadowMaskTop | YIInnerShadowMaskBottom,
    YIInnerShadowMaskHorizontal = YIInnerShadowMaskLeft | YIInnerShadowMaskRight,
    YIInnerShadowMaskAll        = YIInnerShadowMaskVertical | YIInnerShadowMaskHorizontal
} YIInnerShadowMask;

致谢

主要想法来自 Matt Wilding

http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer

许可证

YIInnerShadowView 在 Beerware 许可证下可用。

如果我们某天见面，你认为这个项目有它的价值，那么你可以请我喝一杯啤酒来作为回报。