fractal::utils::media::image

Struct TextureThumbnailer

pub(super) struct TextureThumbnailer(pub(super) Texture);

Expand description

A thumbnailer for a GdkTexture.

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§0: Texture

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impl TextureThumbnailer

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fn downscale_texture_if_needed( self, max_dimensions: FrameDimensions, renderer: &Renderer, ) -> Option<Texture>

Downscale the texture if needed to fit into the given maximum thumbnail dimensions.

Returns None if the dimensions of the texture are unknown.

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fn texture_format_to_thumbnail_format( format: MemoryFormat, ) -> Option<(MemoryFormat, PixelLayout)>

Convert the given texture memory format to the format needed to make a thumbnail.

The WebP encoder only supports RGB and RGBA.

Returns None if the format is unknown.

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pub(super) fn generate_thumbnail( self, scale_factor: i32, renderer: &Renderer, ) -> Option<Thumbnail>

Generate the thumbnail for the given scale factor, with the given GskRenderer.

Trait Implementations§

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impl Clone for TextureThumbnailer

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fn clone(&self) -> TextureThumbnailer

Returns a copy of the value. Read more

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

Performs copy-assignment from source. Read more

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impl Debug for TextureThumbnailer

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl Freeze for TextureThumbnailer

impl RefUnwindSafe for TextureThumbnailer

impl Send for TextureThumbnailer

impl Sync for TextureThumbnailer

impl Unpin for TextureThumbnailer

impl UnwindSafe for TextureThumbnailer

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut u8)

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

Performs copy-assignment from self to dst. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromRef<T> for T
where T: Clone,

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.

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impl<T, W> HasTypeWitness<W> for T
where W: MakeTypeWitness<Arg = T>, T: ?Sized,

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const WITNESS: W = W::MAKE

A constant of the type witness

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impl<T> Identity for T
where T: ?Sized,

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const TYPE_EQ: TypeEq<T, <T as Identity>::Type> = TypeEq::NEW

Proof that Self is the same type as Self::Type, provides methods for casting between Self and Self::Type.

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type Type = T

The same type as Self, used to emulate type equality bounds (T == U) with associated type equality constraints (T: Identity<Type = U>).

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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