Struct DamageHint 

pub struct DamageHint {
    pub source: u64,
    pub from: u64,
    pub to: u64,
    pub placement: Affine,
    pub rects: Vec<Rect>,
    pub copies: Vec<MovedRegion>,
    pub earlier: Vec<(u64, Vec<Rect>)>,
}

What changed in a part’s content between two generations of it, as the one who painted it knows: an embedded app’s own widget damage.

Fields

source: u64

Who painted the content. A hint follows on only within one source.

from: u64

to: u64

The generation painted.

placement: Affine

Where the content is placed: content placed elsewhere has moved.

rects: Vec<Rect>

Every pixel that differs between generations from and to, in the section’s coordinates, antialiasing, shadows and overhang included, except where copies land.

copies: Vec<MovedRegion>

What of generation from generation to shows moved, in the section’s coordinates (crate::scroll_copy): a host that keeps the pixels it presented may move them instead of repainting where they land (damage_with_copies). Any other host repaints there.

earlier: Vec<(u64, Vec<Rect>)>

What differs between each earlier generation still known and to, as rects does for from: a host that presented an older generation (the content was drawn more than once between two of its frames) repaints these instead of the whole part.

Trait Implementations

impl Clone for DamageHint

fn clone(&self) -> DamageHint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DamageHint

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

Formats the value using the given formatter.

impl PartialEq for DamageHint

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for DamageHint