Enum CompressionType

#[non_exhaustive]
pub enum CompressionType {
    Default,
    Fast,
    Best,
    Huffman,
    Rle,
}

Compression level of a PNG encoder. The default setting is Fast.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Default

Default compression level

Fast

Fast, minimal compression

Best

High compression level

Huffman

👎Deprecated: use one of the other compression levels instead, such as ‘Fast’

Huffman coding compression

Rle

👎Deprecated: use one of the other compression levels instead, such as ‘Fast’

Run-length encoding compression

Trait Implementations

impl Clone for CompressionType

fn clone(&self) -> CompressionType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CompressionType

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

Formats the value using the given formatter.

impl Default for CompressionType

fn default() -> CompressionType

Returns the “default value” for a type.

impl PartialEq for CompressionType

fn eq(&self, other: &CompressionType) -> 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 CompressionType

impl Eq for CompressionType

impl StructuralPartialEq for CompressionType