Struct ViewSpec

pub struct ViewSpec {
    pub view_holder_token: Option<ViewHolderToken>,
    pub view_ref: Option<ViewRef>,
    pub annotations: Option<Vec<Annotation>>,
    pub viewport_creation_token: Option<ViewportCreationToken>,
    /* private fields */
}

A description of a view that can be presented by a GraphicalPresenter.

Fields

view_holder_token: Option<ViewHolderToken>

The view holder token for the presented Gfx view. Must be unset for Flatland views. One of view_holder_token or viewport_creation_token must be set.

view_ref: Option<ViewRef>

The ViewRef of the presented Gfx view. Must be unset for Flatland views.

annotations: Option<Vec<Annotation>>

The initial annotations associated with the presented view. Updates to annotations are observed through the AnnotationController passed to PresentView().

Optional.

viewport_creation_token: Option<ViewportCreationToken>

The viewport creation token for the presented Flatland view. Must be unset for Gfx views. One of view_holder_token or viewport_creation_token must be set.

Trait Implementations

impl Debug for ViewSpec

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

Formats the value using the given formatter.

impl Decode<ViewSpec, DefaultFuchsiaResourceDialect> for ViewSpec

fn new_empty() -> Self

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_, DefaultFuchsiaResourceDialect>, offset: usize, depth: Depth, ) -> Result<()>

Decodes an object of type T from the decoder’s buffers into self.

impl Default for ViewSpec

fn default() -> ViewSpec

Returns the “default value” for a type.

impl Encode<ViewSpec, DefaultFuchsiaResourceDialect> for &mut ViewSpec

unsafe fn encode( self, encoder: &mut Encoder<'_, DefaultFuchsiaResourceDialect>, offset: usize, depth: Depth, ) -> Result<()>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl PartialEq for ViewSpec

fn eq(&self, other: &ViewSpec) -> 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 ResourceTypeMarker for ViewSpec

type Borrowed<'a> = &'a mut ViewSpec

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &mut Self::Owned. There are three cases:

fn take_or_borrow<'a>( value: &'a mut <Self as TypeMarker>::Owned, ) -> Self::Borrowed<'a>

Cheaply converts from &mut Self::Owned to Self::Borrowed. For HandleBased types this is “take” (it returns an owned handle and replaces value with Handle::invalid), and for all other types it is “borrow” (just converts from one reference to another).

impl TypeMarker for ViewSpec

type Owned = ViewSpec

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl Standalone<DefaultFuchsiaResourceDialect> for ViewSpec

impl StructuralPartialEq for ViewSpec