Enum CropResult
#[must_use]
pub enum CropResult<Cropped, Old>Cropping an image fails if the image is fully transparent.
Use or_crop_to_1x1_if_empty or or_none_if_empty to obtain a normal
image again.
Variants
-
Cropped(Cropped) The image contained some pixels and has been cropped or left untouched
-
Empty { original: Old } All pixels in the image would be discarded, removing the whole image
Implementations
impl<Cropped, Original> CropResult<Cropped, Original>
fn or_none_if_empty(self) -> Option<Cropped>If the image was fully empty, return
None, otherwise returnSome(cropped_image).fn or_crop_to_1x1_if_empty(self) -> Cropped where Original: Crop<Cropped = Cropped> + GetBounds,If the image was fully empty, crop to one single pixel of all the transparent pixels instead, leaving the layer intact while reducing memory usage.
Panics
Panics if the layer has zero width and height (which indicates an invalid layer state). This should never happen with properly constructed images.
Trait Implementations
impl<Cropped: Clone, Old: Clone> Clone for CropResult<Cropped, Old>
fn clone(&self) -> Self
impl<Cropped: Copy, Old: Copy> Copy for CropResult<Cropped, Old>
impl<Cropped: Debug, Old: Debug> Debug for CropResult<Cropped, Old>
fn fmt(&self, f: &mut Formatter<'_>) -> Result
impl<Cropped: Eq, Old: Eq> Eq for CropResult<Cropped, Old>
impl<Cropped: PartialEq, Old: PartialEq> PartialEq for CropResult<Cropped, Old>
fn eq(&self, other: &Self) -> bool
impl<Cropped: PartialEq, Old: PartialEq> StructuralPartialEq for CropResult<Cropped, Old>
Auto Trait Implementations
impl<Cropped, Old> Freeze for CropResult<Cropped, Old>
where
Cropped: Freeze,
Old: Freeze,
impl<Cropped, Old> RefUnwindSafe for CropResult<Cropped, Old>
where
Cropped: RefUnwindSafe,
Old: RefUnwindSafe,
impl<Cropped, Old> Send for CropResult<Cropped, Old>
where
Cropped: Send,
Old: Send,
impl<Cropped, Old> Sync for CropResult<Cropped, Old>
where
Cropped: Sync,
Old: Sync,
impl<Cropped, Old> Unpin for CropResult<Cropped, Old>
where
Cropped: Unpin,
Old: Unpin,
impl<Cropped, Old> UnsafeUnpin for CropResult<Cropped, Old>
where
Cropped: UnsafeUnpin,
Old: UnsafeUnpin,
impl<Cropped, Old> UnwindSafe for CropResult<Cropped, Old>
where
Cropped: UnwindSafe,
Old: UnwindSafe,
Blanket Implementations
impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for CropResult<Cropped, Old>
where
ST: ?Sized,
DT: ?Sized,
impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for CropResult<Cropped, Old>
where
ST: ?Sized,
DT: ?Sized,
impl<T> Any for CropResult<Cropped, Old>
where
T: 'static + ?Sized,
fn type_id(&self) -> TypeId
impl<T> Borrow<T> for CropResult<Cropped, Old>
where
T: ?Sized,
fn borrow(&self) -> &T
impl<T> BorrowMut<T> for CropResult<Cropped, Old>
where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
impl<T> CloneToUninit for CropResult<Cropped, Old>
where
T: Clone,
unsafe fn clone_to_uninit(&self, dest: *mut u8)
impl<T> From<T> for CropResult<Cropped, Old>
fn from(t: T) -> TReturns the argument unchanged.
impl<T> Pointable for CropResult<Cropped, Old>
const ALIGN: usize = _;type Init = T;unsafe fn init(init: <T as Pointable>::Init) -> usizeunsafe fn deref<'a>(ptr: usize) -> &'a Tunsafe fn deref_mut<'a>(ptr: usize) -> &'a mut Tunsafe fn drop(ptr: usize)
impl<T> Read<Exclusive, BecauseExclusive> for CropResult<Cropped, Old>
where
T: ?Sized,
impl<T> ToOwned for CropResult<Cropped, Old>
where
T: Clone,
type Owned = T;fn to_owned(&self) -> Tfn clone_into(&self, target: &mut T)
impl<T, U> Into<U> for CropResult<Cropped, Old>
where
U: From<T>,
fn into(self) -> UCalls
U::from(self).That is, this conversion is whatever the implementation of
[From]<T> for Uchooses to do.
impl<T, U> TryFrom<U> for CropResult<Cropped, Old>
where
U: Into<T>,
type Error = never;fn try_from(value: U) -> Result<T, never>
impl<T, U> TryInto<U> for CropResult<Cropped, Old>
where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error;fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>