Struct egui::FontImage

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pub struct FontImage {
    pub size: [usize; 2],
    pub pixels: Vec<f32, Global>,
}
Expand description

A single-channel image designed for the font texture.

Each value represents “coverage”, i.e. how much a texel is covered by a character.

This is roughly interpreted as the opacity of a white image.

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§size: [usize; 2]

width, height

§pixels: Vec<f32, Global>

The coverage value.

Often you want to use Self::srgba_pixels instead.

Implementations§

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impl FontImage

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pub fn new(size: [usize; 2]) -> FontImage

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pub fn width(&self) -> usize

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pub fn height(&self) -> usize

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pub fn srgba_pixels(&self, gamma: Option<f32>) -> impl ExactSizeIterator

Returns the textures as sRGBA premultiplied pixels, row by row, top to bottom.

gamma should normally be set to None.

If you are having problems with text looking skinny and pixelated, try using a low gamma, e.g. 0.4.

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pub fn region(&self, _: [usize; 2], _: [usize; 2]) -> FontImage

Clone a sub-region as a new image.

Trait Implementations§

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impl Clone for FontImage

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fn clone(&self) -> FontImage

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 Default for FontImage

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fn default() -> FontImage

Returns the “default value” for a type. Read more
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impl From<FontImage> for ImageData

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fn from(image: FontImage) -> ImageData

Converts to this type from the input type.
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impl Index<(usize, usize)> for FontImage

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type Output = f32

The returned type after indexing.
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fn index(&self, _: (usize, usize)) -> &f32

Performs the indexing (container[index]) operation. Read more
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impl IndexMut<(usize, usize)> for FontImage

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fn index_mut(&mut self, _: (usize, usize)) -> &mut f32

Performs the mutable indexing (container[index]) operation. Read more
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impl PartialEq<FontImage> for FontImage

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for FontImage

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for Twhere 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 Twhere 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 Twhere 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere 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> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> SerializableAny for Twhere T: 'static + Any + Clone + Send + Sync,