Struct ScrollEvent 

pub struct ScrollEvent {
    pub position: Point<Pixels>,
    pub delta: ScrollDelta,
    pub modifiers: Modifiers,
    pub touch_phase: TouchPhase,
    pub source: ScrollSource,
}

One step of scrolling from a mouse wheel, trackpad, or touch pan.

Fields

position: Point<Pixels>

The position the scroll targets. For touch pans this is where the pan started, so the whole gesture stays with the container it began on.

delta: ScrollDelta

The change in scroll position for this event.

modifiers: Modifiers

The modifiers that were held down when the scroll happened.

touch_phase: TouchPhase

The phase of the scroll gesture.

source: ScrollSource

The kind of input that produced this scroll.

Methods from Deref<Target = Modifiers>

pub fn modified(&self) -> bool

Returns whether any modifier key is pressed.

pub fn secondary(&self, cx: &App) -> bool

Whether the semantically ‘secondary’ modifier key is pressed.

On macOS, this is the command key. On Linux and Windows, this is the control key.

pub fn number_of_modifiers(&self) -> u8

Returns how many modifier keys are pressed.

pub fn is_subset_of(&self, other: &Modifiers) -> bool

Checks if this Modifiers is a subset of another Modifiers.

Trait Implementations

impl Clone for ScrollEvent

fn clone(&self) -> ScrollEvent

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScrollEvent

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

Formats the value using the given formatter.

impl Default for ScrollEvent

fn default() -> ScrollEvent

Returns the “default value” for a type.

impl Deref for ScrollEvent

type Target = Modifiers

The resulting type after dereferencing.

fn deref(&self) -> &<ScrollEvent as Deref>::Target

Dereferences the value.

impl InputEvent for ScrollEvent

fn to_platform_input(self) -> PlatformInput

Convert this event into the platform input enum.

impl MouseEvent for ScrollEvent