Struct gfx_hal::window::CompositeAlpha

pub struct CompositeAlpha { /* fields omitted */ }

Specifies how the alpha channel of the images should be handled during compositing.

Methods

impl CompositeAlpha

pub const OPAQUE: CompositeAlpha

The alpha channel, if it exists, of the images is ignored in the compositing process. Instead, the image is treated as if it has a constant alpha of 1.0.

pub const PREMULTIPLIED: CompositeAlpha

The alpha channel, if it exists, of the images is respected in the compositing process. The non-alpha channels of the image are expected to already be multiplied by the alpha channel by the application.

pub const POSTMULTIPLIED: CompositeAlpha

The alpha channel, if it exists, of the images is respected in the compositing process. The non-alpha channels of the image are not expected to already be multiplied by the alpha channel by the application; instead, the compositor will multiply the non-alpha channels of the image by the alpha channel during compositing.

pub const INHERIT: CompositeAlpha

The way in which the presentation engine treats the alpha channel in the images is unknown to gfx-hal. Instead, the application is responsible for setting the composite alpha blending mode using native window system commands. If the application does not set the blending mode using native window system commands, then a platform-specific default will be used.

pub fn empty() -> CompositeAlpha

Returns an empty set of flags.

pub fn all() -> CompositeAlpha

Returns the set containing all flags.

pub fn bits(&self) -> u32

Returns the raw value of the flags currently stored.

pub fn from_bits(bits: u32) -> Option<CompositeAlpha>

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

pub fn from_bits_truncate(bits: u32) -> CompositeAlpha

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

pub fn is_empty(&self) -> bool

Returns true if no flags are currently stored.

pub fn is_all(&self) -> bool

Returns true if all flags are currently set.

pub fn intersects(&self, other: CompositeAlpha) -> bool

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

pub fn contains(&self, other: CompositeAlpha) -> bool

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

pub fn insert(&mut self, other: CompositeAlpha)

Inserts the specified flags in-place.

pub fn remove(&mut self, other: CompositeAlpha)

Removes the specified flags in-place.

pub fn toggle(&mut self, other: CompositeAlpha)

Toggles the specified flags in-place.

pub fn set(&mut self, other: CompositeAlpha, value: bool)

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

Trait Implementations

impl Copy for CompositeAlpha

impl PartialEq<CompositeAlpha> for CompositeAlpha

fn eq(&self, other: &CompositeAlpha) -> bool

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

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

This method tests for !=.

impl Clone for CompositeAlpha

fn clone(&self) -> CompositeAlpha

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Ord for CompositeAlpha

fn cmp(&self, other: &CompositeAlpha) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

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

Restrict a value to a certain interval.

impl Eq for CompositeAlpha

impl Extend<CompositeAlpha> for CompositeAlpha

fn extend<T: IntoIterator<Item = CompositeAlpha>>(&mut self, iterator: T)

Extends a collection with the contents of an iterator.

impl PartialOrd<CompositeAlpha> for CompositeAlpha

fn partial_cmp(&self, other: &CompositeAlpha) -> Option<Ordering>

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

fn lt(&self, other: &CompositeAlpha) -> bool

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

fn le(&self, other: &CompositeAlpha) -> bool

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

fn gt(&self, other: &CompositeAlpha) -> bool

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

fn ge(&self, other: &CompositeAlpha) -> bool

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

impl Debug for CompositeAlpha

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

Formats the value using the given formatter.

impl Sub<CompositeAlpha> for CompositeAlpha

type Output = CompositeAlpha

The resulting type after applying the - operator.

fn sub(self, other: CompositeAlpha) -> CompositeAlpha

Returns the set difference of the two sets of flags.

impl SubAssign<CompositeAlpha> for CompositeAlpha

fn sub_assign(&mut self, other: CompositeAlpha)

Disables all flags enabled in the set.

impl Not for CompositeAlpha

type Output = CompositeAlpha

The resulting type after applying the ! operator.

fn not(self) -> CompositeAlpha

Returns the complement of this set of flags.

impl BitAnd<CompositeAlpha> for CompositeAlpha

type Output = CompositeAlpha

The resulting type after applying the & operator.

fn bitand(self, other: CompositeAlpha) -> CompositeAlpha

Returns the intersection between the two sets of flags.

impl BitOr<CompositeAlpha> for CompositeAlpha

type Output = CompositeAlpha

The resulting type after applying the | operator.

fn bitor(self, other: CompositeAlpha) -> CompositeAlpha

Returns the union of the two sets of flags.

impl BitXor<CompositeAlpha> for CompositeAlpha

type Output = CompositeAlpha

The resulting type after applying the ^ operator.

fn bitxor(self, other: CompositeAlpha) -> CompositeAlpha

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

impl BitAndAssign<CompositeAlpha> for CompositeAlpha

fn bitand_assign(&mut self, other: CompositeAlpha)

Disables all flags disabled in the set.

impl BitOrAssign<CompositeAlpha> for CompositeAlpha

fn bitor_assign(&mut self, other: CompositeAlpha)

Adds the set of flags.

impl BitXorAssign<CompositeAlpha> for CompositeAlpha

fn bitxor_assign(&mut self, other: CompositeAlpha)

Toggles the set of flags.

impl Hash for CompositeAlpha

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

Feeds this value into the given [Hasher].

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

Feeds a slice of this type into the given [Hasher].

impl FromIterator<CompositeAlpha> for CompositeAlpha

fn from_iter<T: IntoIterator<Item = CompositeAlpha>>(
    iterator: T
) -> CompositeAlpha

Creates a value from an iterator.

impl Octal for CompositeAlpha

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

Formats the value using the given formatter.

impl Binary for CompositeAlpha

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

Formats the value using the given formatter.

impl LowerHex for CompositeAlpha

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

Formats the value using the given formatter.

impl UpperHex for CompositeAlpha

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

Formats the value using the given formatter.