Struct png::Transformations

pub struct Transformations { /* fields omitted */ }

[−] Expand description

Output transformations

Only IDENTITY and TRANSFORM_EXPAND | TRANSFORM_STRIP_ALPHA can be used at the moment.

Implementations

impl Transformations[−]

pub const IDENTITY: Transformations[−][−]

No transformation

pub const STRIP_16: Transformations[−][−]

Strip 16-bit samples to 8 bits

pub const STRIP_ALPHA: Transformations[−][−]

Discard the alpha channel

pub const PACKING: Transformations[−][−]

Expand 1; 2 and 4-bit samples to bytes

pub const PACKSWAP: Transformations[−][−]

Change order of packed pixels to LSB first

pub const EXPAND: Transformations[−][−]

Expand paletted images to RGB; expand grayscale images of less than 8-bit depth to 8-bit depth; and expand tRNS chunks to alpha channels.

pub const INVERT_MONO: Transformations[−][−]

Invert monochrome images

pub const SHIFT: Transformations[−][−]

Normalize pixels to the sBIT depth

pub const BGR: Transformations[−][−]

Flip RGB to BGR; RGBA to BGRA

pub const SWAP_ALPHA: Transformations[−][−]

Flip RGBA to ARGB or GA to AG

pub const SWAP_ENDIAN: Transformations[−][−]

Byte-swap 16-bit samples

pub const INVERT_ALPHA: Transformations[−][−]

Change alpha from opacity to transparency

pub const STRIP_FILLER: Transformations

pub const STRIP_FILLER_BEFORE: Transformations

pub const STRIP_FILLER_AFTER: Transformations

pub const GRAY_TO_RGB: Transformations

pub const EXPAND_16: Transformations

pub const SCALE_16: Transformations

pub const fn empty() -> Transformations[−]

Returns an empty set of flags

pub const fn all() -> Transformations[−]

Returns the set containing all flags.

pub const fn bits(&self) -> u32[−]

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: u32) -> Option<Transformations>[−]

Convert from underlying bit representation, unless that representation contains bits that do not correspond to a flag.

pub const fn from_bits_truncate(bits: u32) -> Transformations[−]

Convert from underlying bit representation, dropping any bits that do not correspond to flags.

pub const unsafe fn from_bits_unchecked(bits: u32) -> Transformations[−]

Convert from underlying bit representation, preserving all bits (even those not corresponding to a defined flag).

pub const fn is_empty(&self) -> bool[−]

Returns true if no flags are currently stored.

pub const fn is_all(&self) -> bool[−]

Returns true if all flags are currently set.

pub const fn intersects(&self, other: Transformations) -> bool[−]

Returns true if there are flags common to both self and other.

pub const fn contains(&self, other: Transformations) -> bool[−]

Returns true all of the flags in other are contained within self.

pub fn insert(&mut self, other: Transformations)[−]

Inserts the specified flags in-place.

pub fn remove(&mut self, other: Transformations)[−]

Removes the specified flags in-place.

pub fn toggle(&mut self, other: Transformations)[−]

Toggles the specified flags in-place.

pub fn set(&mut self, other: Transformations, value: bool)[−]

Inserts or removes the specified flags depending on the passed value.

Trait Implementations

impl Binary for Transformations[+]

[+] Show hidden undocumented items

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

Formats the value using the given formatter.

impl BitAnd<Transformations> for Transformations[+]

type Output = Transformations

The resulting type after applying the & operator.

fn bitand(self, other: Transformations) -> Transformations[−]

Returns the intersection between the two sets of flags.

impl BitAndAssign<Transformations> for Transformations[+]

fn bitand_assign(&mut self, other: Transformations)[−]

Disables all flags disabled in the set.

impl BitOr<Transformations> for Transformations[+]

type Output = Transformations

The resulting type after applying the | operator.

fn bitor(self, other: Transformations) -> Transformations[−]

Returns the union of the two sets of flags.

impl BitOrAssign<Transformations> for Transformations[+]

fn bitor_assign(&mut self, other: Transformations)[−]

Adds the set of flags.

impl BitXor<Transformations> for Transformations[+]

type Output = Transformations

The resulting type after applying the ^ operator.

fn bitxor(self, other: Transformations) -> Transformations[−]

Returns the left flags, but with all the right flags toggled.

impl BitXorAssign<Transformations> for Transformations[+]

fn bitxor_assign(&mut self, other: Transformations)[−]

Toggles the set of flags.

impl Clone for Transformations[+]

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fn clone(&self) -> Transformations[−]

Returns a copy of the value.

pub fn clone_from(&mut self, source: &Self)[−]

Performs copy-assignment from source.

impl Copy for Transformations

impl Debug for Transformations[+]

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

Formats the value using the given formatter.

impl Eq for Transformations

impl Extend<Transformations> for Transformations[+]

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fn extend<T: IntoIterator<Item = Transformations>>(&mut self, iterator: T)[−]

Extends a collection with the contents of an iterator.

pub fn extend_one(&mut self, item: A)[−]

🔬 This is a nightly-only experimental API. (extend_one)

Extends a collection with exactly one element.

pub fn extend_reserve(&mut self, additional: usize)[−]

🔬 This is a nightly-only experimental API. (extend_one)

Reserves capacity in a collection for the given number of additional elements.

impl FromIterator<Transformations> for Transformations[+]

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fn from_iter<T: IntoIterator<Item = Transformations>>(
    iterator: T
) -> Transformations[−]

Creates a value from an iterator.

impl Hash for Transformations[+]

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl LowerHex for Transformations[+]

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

Formats the value using the given formatter.

impl Not for Transformations[+]

type Output = Transformations

The resulting type after applying the ! operator.

fn not(self) -> Transformations[−]

Returns the complement of this set of flags.

impl Octal for Transformations[+]

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

Formats the value using the given formatter.

impl Ord for Transformations[+]

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fn cmp(&self, other: &Transformations) -> Ordering[−]

This method returns an Ordering between self and other.

#[must_use]

pub fn max(self, other: Self) -> Self[−]

Compares and returns the maximum of two values.

#[must_use]

pub fn min(self, other: Self) -> Self[−]

Compares and returns the minimum of two values.

#[must_use]

pub fn clamp(self, min: Self, max: Self) -> Self[−]

Restrict a value to a certain interval.

impl PartialEq<Transformations> for Transformations[+]

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fn eq(&self, other: &Transformations) -> bool[−]

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

fn ne(&self, other: &Transformations) -> bool[−]

This method tests for !=.

impl PartialOrd<Transformations> for Transformations[+]

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fn partial_cmp(&self, other: &Transformations) -> Option<Ordering>[−]

This method returns an ordering between self and other values if one exists.

#[must_use]

pub fn lt(&self, other: &Rhs) -> bool[−]

This method tests less than (for self and other) and is used by the < operator.

#[must_use]

pub fn le(&self, other: &Rhs) -> bool[−]

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]

pub fn gt(&self, other: &Rhs) -> bool[−]

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]

pub fn ge(&self, other: &Rhs) -> bool[−]

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralEq for Transformations

impl StructuralPartialEq for Transformations

impl Sub<Transformations> for Transformations[+]

type Output = Transformations

The resulting type after applying the - operator.

fn sub(self, other: Transformations) -> Transformations[−]

Returns the set difference of the two sets of flags.

impl SubAssign<Transformations> for Transformations[+]

fn sub_assign(&mut self, other: Transformations)[−]

Disables all flags enabled in the set.

impl UpperHex for Transformations[+]

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

Formats the value using the given formatter.