Struct iced::widget::canvas::Cache

pub struct Cache { /* private fields */ }
Available on crate feature canvas only.
Expand description

A simple cache that stores generated Geometry to avoid recomputation.

A Cache will not redraw its geometry unless the dimensions of its layer change or it is explicitly cleared.

Implementations§

Creates a new empty Cache.

Clears the Cache, forcing a redraw the next time it is used.

Draws Geometry using the provided closure and stores it in the Cache.

The closure will only be called when

  • the bounds have changed since the previous draw call.
  • the Cache is empty or has been explicitly cleared.

Otherwise, the previously stored Geometry will be returned. The Cache is not cleared in this case. In other words, it will keep returning the stored Geometry if needed.

Trait Implementations§

Formats the value using the given formatter. Read more
Returns the “default value” for a type. Read more

Auto Trait Implementations§

Blanket Implementations§

Convert the source color to the destination color using the specified method Read more
Convert the source color to the destination color using the bradford method by default Read more
Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

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

Convert into T with values clamped to the color defined bounds Read more
Convert into T. The resulting color might be invalid in its color space Read more
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The type for initializers.
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Dereferences the given pointer. Read more
Mutably dereferences the given pointer. Read more
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Read this value from the supplied reader. Same as ReadEndian::read_from_little_endian().
Read this value from the supplied reader. Same as ReadEndian::read_from_big_endian().
Read this value from the supplied reader. Same as ReadEndian::read_from_native_endian().
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.
Convert into T, returning ok if the color is inside of its defined range, otherwise an OutOfBounds error is returned which contains the unclamped color. Read more