42 lines
1.2 KiB
Rust
42 lines
1.2 KiB
Rust
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use crate::dpi::LogicalPosition;
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use crate::event::{ModifiersState, MouseButton, MouseScrollDelta};
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use std::convert::TryInto;
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use web_sys::{MouseEvent, WheelEvent};
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pub fn mouse_button(event: &MouseEvent) -> MouseButton {
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match event.button() {
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0 => MouseButton::Left,
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1 => MouseButton::Middle,
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2 => MouseButton::Right,
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i => MouseButton::Other((i - 3).try_into().expect("very large mouse button value")),
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}
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}
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pub fn mouse_modifiers(event: &MouseEvent) -> ModifiersState {
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ModifiersState {
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shift: event.shift_key(),
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ctrl: event.ctrl_key(),
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alt: event.alt_key(),
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logo: event.meta_key(),
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}
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}
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pub fn mouse_position(event: &MouseEvent) -> LogicalPosition {
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LogicalPosition {
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x: event.offset_x() as f64,
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y: event.offset_y() as f64,
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}
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}
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pub fn mouse_scroll_delta(event: &WheelEvent) -> Option<MouseScrollDelta> {
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let x = event.delta_x();
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let y = event.delta_y();
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match event.delta_mode() {
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WheelEvent::DOM_DELTA_LINE => Some(MouseScrollDelta::LineDelta(x as f32, y as f32)),
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WheelEvent::DOM_DELTA_PIXEL => Some(MouseScrollDelta::PixelDelta(LogicalPosition { x, y })),
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_ => None,
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}
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}
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