Struct BeginFrameParams 

pub struct BeginFrameParams<'a> { /* private fields */ }

Sends a BeginFrame to the target and returns when the frame was completed. Optionally captures a screenshot from the resulting frame. Requires that the target was created with enabled BeginFrameControl. Designed for use with –run-all-compositor-stages-before-draw, see also https://goo.gle/chrome-headless-rendering for more background.

Implementations

impl<'a> BeginFrameParams<'a>

pub fn builder() -> BeginFrameParamsBuilder<'a>

Creates a builder for this type.

pub fn frame_time_ticks(&self) -> Option<f64>

Timestamp of this BeginFrame in Renderer TimeTicks (milliseconds of uptime). If not set, the current time will be used.

pub fn interval(&self) -> Option<f64>

The interval between BeginFrames that is reported to the compositor, in milliseconds. Defaults to a 60 frames/second interval, i.e. about 16.666 milliseconds.

pub fn no_display_updates(&self) -> Option<bool>

Whether updates should not be committed and drawn onto the display. False by default. If true, only side effects of the BeginFrame will be run, such as layout and animations, but any visual updates may not be visible on the display or in screenshots.

pub fn screenshot(&self) -> Option<&ScreenshotParams<'a>>

If set, a screenshot of the frame will be captured and returned in the response. Otherwise, no screenshot will be captured. Note that capturing a screenshot can fail, for example, during renderer initialization. In such a case, no screenshot data will be returned.

impl<'a> BeginFrameParams<'a>

pub const METHOD: &'static str = "HeadlessExperimental.beginFrame"

Trait Implementations

impl<'a> CdpCommand<'a> for BeginFrameParams<'a>

const METHOD: &'static str = "HeadlessExperimental.beginFrame"

type Response = BeginFrameReturns<'a>

impl<'a> Clone for BeginFrameParams<'a>

fn clone(&self) -> BeginFrameParams<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for BeginFrameParams<'a>

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

Formats the value using the given formatter.

impl<'a> Default for BeginFrameParams<'a>

fn default() -> BeginFrameParams<'a>

Returns the “default value” for a type.

impl<'de, 'a> Deserialize<'de> for BeginFrameParams<'a>

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'a> Serialize for BeginFrameParams<'a>

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.