Struct ImageAnimationState 

pub struct ImageAnimationState {
    pub image: Arc<RasterImage>,
    pub active_frame: usize,
    pub(crate) frame_start_time: f64,
    pub completed_loops: Option<u32>,
}

Fields

image: Arc<RasterImage>

active_frame: usize

frame_start_time: f64

completed_loops: Option<u32>

The number of loops that have fully completed in this ImageAnimationState. If this is greater than or equal to the maximum number of loops in the RasterImage, then the animation has ended. If it is None, then the image will loop infinitely.

Implementations

impl ImageAnimationState

pub fn new(image: Arc<RasterImage>, last_update_time: f64) -> Self

pub fn image_key(&self) -> Option<ImageKey>

pub fn duration_to_next_frame(&self, now: f64) -> Option<Duration>

pub fn update_frame_for_animation_timeline_value(&mut self, now: f64) -> bool

check whether image active frame need to be updated given current time, return true if there are image that need to be updated. false otherwise.

pub(crate) fn is_finished(&self) -> bool

Whether or not this animation has finished looping and has reached its final frame.

pub(crate) fn advance_completed_loops(&mut self)

If this animation has a finite number of loops, advance the count of completed loops.

Trait Implementations

impl Clone for ImageAnimationState

fn clone(&self) -> ImageAnimationState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ImageAnimationState

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

Formats the value using the given formatter.

impl MallocSizeOf for ImageAnimationState

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.