Enum CacheType 

pub enum CacheType {
    None,
    Operations,
    OperationsFull,
    Image,
    GPU,
    ImageDoubleBuffered,
    ImageComposite,
    ImageCompositeGPU,
}

What a control keeps between frames instead of painting again (DrawnUI SkiaCacheType).

Variants

None

Operations

Recorded draw commands, replayed each frame.

OperationsFull

Recorded draw commands over the whole area the canvas shows (its clip), not only the control’s rect: for a control that paints outside its rect. Recorded again when the size of that area changes; a cache that must move inside a scroll belongs on the scrolled parent.

Image

Offscreen image on the window’s GPU context, blitted each frame (DrawnUI’s GPU cache; its Image cache is a CPU bitmap).

GPU

DrawnUI GPU: the same as Image, which is on the GPU already.

ImageDoubleBuffered

A CPU bitmap made off the frame thread: the last one is drawn while the next one is made (the desktop; the browser makes it in the frame, as Image).

ImageComposite

An Image cache whose surface is kept: when only some children changed, they and the siblings they overlap are drawn again into it, the rest stays.

ImageCompositeGPU

DrawnUI ImageCompositeGPU: the same as ImageComposite, which is on the GPU already.

Trait Implementations

impl Clone for CacheType

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CacheType

impl Debug for CacheType

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

Formats the value using the given formatter.

impl Default for CacheType

fn default() -> Self

Returns the “default value” for a type.

impl Eq for CacheType

impl PartialEq for CacheType

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

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for CacheType