Enum exr::image::crop::CropResult

pub enum CropResult<Cropped, Old> {
    Cropped(Cropped),
    Empty {
        original: 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

Fields

original: Old

The fully discarded image which caused the cropping to fail

All pixels in the image would be discarded, removing the whole image

Implementations

impl<Cropped, Original> CropResult<Cropped, Original>

pub fn or_none_if_empty(self) -> Option<Cropped>

If the image was fully empty, return None, otherwise return Some(cropped_image).

pub fn or_crop_to_1x1_if_empty(self) -> Croppedwhere 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.

Trait Implementations

impl<Cropped: Clone, Old: Clone> Clone for CropResult<Cropped, Old>

fn clone(&self) -> CropResult<Cropped, Old>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<Cropped: Debug, Old: Debug> Debug for CropResult<Cropped, Old>

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

Formats the value using the given formatter.

impl<Cropped: PartialEq, Old: PartialEq> PartialEq<CropResult<Cropped, Old>> for CropResult<Cropped, Old>

fn eq(&self, other: &CropResult<Cropped, Old>) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<Cropped: Copy, Old: Copy> Copy for CropResult<Cropped, Old>

impl<Cropped: Eq, Old: Eq> Eq for CropResult<Cropped, Old>

impl<Cropped, Old> StructuralEq for CropResult<Cropped, Old>

impl<Cropped, Old> StructuralPartialEq for CropResult<Cropped, Old>