Enum zng_view_api::mouse::MouseScrollDelta

pub enum MouseScrollDelta {
    LineDelta(f32, f32),
    PixelDelta(f32, f32),
}

Describes a difference in the mouse scroll wheel state.

Variants

LineDelta(f32, f32)

Amount in lines or rows to scroll in the horizontal and vertical directions.

Positive values indicate rightwards movement in the X axis and downwards movement in the Y axis.

PixelDelta(f32, f32)

Amount in pixels to scroll in the horizontal and vertical direction.

Scroll events are expressed as a pixel delta if supported by the device (eg. a touchpad) and platform.

Implementations

impl MouseScrollDelta

pub fn is_sign_positive(self) -> BoolVector2D

Gets the sign status of x and y.

Positive values indicate rightwards movement in the X axis and downwards movement in the Y axis.

pub fn is_sign_negative(self) -> BoolVector2D

Gets the sign status of x and y.

Negative values indicate leftwards movement in the X axis and upwards movement in the Y axis.

pub fn delta(self, line_size: Size2D<f32, Px>) -> Vector2D<f32, Px>

Gets the pixel delta, line delta is converted using the line_size.

Trait Implementations

impl Clone for MouseScrollDelta

fn clone(&self) -> MouseScrollDelta

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MouseScrollDelta

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MouseScrollDelta

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for MouseScrollDelta

fn eq(&self, other: &MouseScrollDelta) -> 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 Serialize for MouseScrollDelta

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for MouseScrollDelta

impl StructuralPartialEq for MouseScrollDelta