79 lines
2.4 KiB
Rust
79 lines
2.4 KiB
Rust
use dioxus_core::Event;
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use euclid::UnknownUnit;
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use std::fmt::{Debug, Formatter};
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use crate::geometry::{LinesVector, PagesVector, PixelsVector, WheelDelta};
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pub type WheelEvent = Event<WheelData>;
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#[cfg_attr(feature = "serialize", derive(serde::Serialize, serde::Deserialize))]
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#[derive(Clone, PartialEq, Default)]
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pub struct WheelData {
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#[deprecated(since = "0.3.0", note = "use delta() instead")]
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pub delta_mode: u32,
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#[deprecated(since = "0.3.0", note = "use delta() instead")]
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pub delta_x: f64,
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#[deprecated(since = "0.3.0", note = "use delta() instead")]
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pub delta_y: f64,
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#[deprecated(since = "0.3.0", note = "use delta() instead")]
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pub delta_z: f64,
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}
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impl_event![
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WheelData;
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/// Called when the mouse wheel is rotated over an element.
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onwheel
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];
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impl WheelData {
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/// Construct a new WheelData with the specified wheel movement delta
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pub fn new(delta: WheelDelta) -> Self {
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let (delta_mode, vector) = match delta {
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WheelDelta::Pixels(v) => (0, v.cast_unit::<UnknownUnit>()),
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WheelDelta::Lines(v) => (1, v.cast_unit::<UnknownUnit>()),
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WheelDelta::Pages(v) => (2, v.cast_unit::<UnknownUnit>()),
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};
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#[allow(deprecated)]
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WheelData {
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delta_mode,
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delta_x: vector.x,
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delta_y: vector.y,
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delta_z: vector.z,
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}
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}
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/// Construct from the attributes of the web wheel event
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pub fn from_web_attributes(delta_mode: u32, delta_x: f64, delta_y: f64, delta_z: f64) -> Self {
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#[allow(deprecated)]
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Self {
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delta_mode,
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delta_x,
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delta_y,
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delta_z,
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}
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}
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/// The amount of wheel movement
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#[allow(deprecated)]
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pub fn delta(&self) -> WheelDelta {
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let x = self.delta_x;
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let y = self.delta_y;
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let z = self.delta_z;
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match self.delta_mode {
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0 => WheelDelta::Pixels(PixelsVector::new(x, y, z)),
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1 => WheelDelta::Lines(LinesVector::new(x, y, z)),
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2 => WheelDelta::Pages(PagesVector::new(x, y, z)),
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_ => panic!("Invalid delta mode, {:?}", self.delta_mode),
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}
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}
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}
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impl Debug for WheelData {
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fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
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f.debug_struct("WheelData")
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.field("delta", &self.delta())
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.finish()
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}
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}
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