Enum ScaleToFit 

#[repr(i32)]
pub enum ScaleToFit {
    Fill = 0,
    Start = 1,
    Center = 2,
    End = 3,
}

源矩形映射到目标矩形时的缩放/对齐策略，对应 SkMatrix::ScaleToFit。 Scale/align policy when mapping a source rect to a destination rect (SkMatrix::ScaleToFit).

用于 Matrix::set_rect_to_rect。

Variants

Fill = 0

独立缩放 sx/sy 以完全填满 dst（可能非等比）。 Scale X and Y independently to fill dst (aspect ratio may change).

Start = 1

等比缩放并靠 dst 的「起始」边对齐（与 Skia Start 一致）。 Uniform scale; aligned to the start edge of dst per Skia.

Center = 2

等比缩放并在 dst 内居中。 Uniform scale; centered within dst.

End = 3

等比缩放并靠「结束」边对齐。 Uniform scale; aligned to the end edge of dst.

Trait Implementations

impl Clone for ScaleToFit

fn clone(&self) -> ScaleToFit

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ScaleToFit

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for ScaleToFit

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ScaleToFit

fn eq(&self, other: &ScaleToFit) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ScaleToFit

impl Eq for ScaleToFit

impl StructuralPartialEq for ScaleToFit