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TextureThumbnailer

fractal::utils::media::image

Struct TextureThumbnailer 

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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_and_blurhash( self, scale_factor: i32, renderer: &Renderer, ) -> Option<(Thumbnail, Blurhash)>

Generate the thumbnail for the given scale factor, with the given GskRenderer, and a Blurhash.

We use the thumbnail to compute the blurhash, which should be less expensive than using the original texture.

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impl Clone for TextureThumbnailer

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fn clone(&self) -> TextureThumbnailer

Returns a duplicate 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

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

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