121 lines
3.6 KiB
Rust
121 lines
3.6 KiB
Rust
//! Data structures representing user input, such as modifier keys and mouse buttons
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use enumset::{EnumSet, EnumSetType};
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/// A re-export of keyboard_types
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pub use keyboard_types;
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/// A mouse button type (such as Primary/Secondary)
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// note: EnumSetType also derives Copy and Clone for some reason
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#[derive(EnumSetType, Debug)]
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#[cfg_attr(feature = "serialize", derive(serde::Serialize, serde::Deserialize))]
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pub enum MouseButton {
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/// Primary button (typically the left button)
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Primary,
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/// Secondary button (typically the right button)
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Secondary,
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/// Auxiliary button (typically the middle button)
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Auxiliary,
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/// Fourth button (typically the "Browser Back" button)
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Fourth,
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/// Fifth button (typically the "Browser Forward" button)
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Fifth,
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/// A button with an unknown code
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Unknown,
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}
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impl MouseButton {
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/// Constructs a MouseButton for the specified button code
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///
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/// E.g. 0 => Primary; 1 => Auxiliary
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///
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/// Unknown codes get mapped to MouseButton::Unknown.
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pub fn from_web_code(code: i16) -> Self {
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match code {
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0 => MouseButton::Primary,
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// not a typo; auxiliary and secondary are swapped unlike in the `buttons` field.
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// https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/button
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1 => MouseButton::Auxiliary,
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2 => MouseButton::Secondary,
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3 => MouseButton::Fourth,
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4 => MouseButton::Fifth,
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_ => MouseButton::Unknown,
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}
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}
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/// Converts MouseButton into the corresponding button code
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///
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/// MouseButton::Unknown will get mapped to -1
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pub fn into_web_code(self) -> i16 {
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match self {
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MouseButton::Primary => 0,
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// not a typo; auxiliary and secondary are swapped unlike in the `buttons` field.
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// https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/button
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MouseButton::Auxiliary => 1,
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MouseButton::Secondary => 2,
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MouseButton::Fourth => 3,
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MouseButton::Fifth => 4,
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MouseButton::Unknown => -1,
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}
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}
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}
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/// A set of mouse buttons
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pub type MouseButtonSet = EnumSet<MouseButton>;
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pub fn decode_mouse_button_set(code: u16) -> MouseButtonSet {
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let mut set = EnumSet::empty();
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// https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/buttons
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#[allow(deprecated)]
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{
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if code & 0b1 != 0 {
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set |= MouseButton::Primary;
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}
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if code & 0b10 != 0 {
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set |= MouseButton::Secondary;
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}
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if code & 0b100 != 0 {
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set |= MouseButton::Auxiliary;
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}
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if code & 0b1000 != 0 {
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set |= MouseButton::Fourth;
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}
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if code & 0b10000 != 0 {
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set |= MouseButton::Fifth;
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}
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if code & (!0b11111) != 0 {
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set |= MouseButton::Unknown;
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}
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}
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set
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}
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pub fn encode_mouse_button_set(set: MouseButtonSet) -> u16 {
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let mut code = 0;
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// https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/buttons
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{
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if set.contains(MouseButton::Primary) {
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code |= 0b1;
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}
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if set.contains(MouseButton::Secondary) {
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code |= 0b10;
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}
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if set.contains(MouseButton::Auxiliary) {
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code |= 0b100;
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}
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if set.contains(MouseButton::Fourth) {
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code |= 0b1000;
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}
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if set.contains(MouseButton::Fifth) {
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code |= 0b10000;
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}
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if set.contains(MouseButton::Unknown) {
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code |= 0b100000;
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}
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}
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code
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}
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