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

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

Fields

original: Old

The fully discarded image which caused the cropping to fail

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) -> 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.

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 for CropResult<Cropped, Old>

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

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

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