use crate::dpi::LogicalPosition;
use crate::event::{ModifiersState, MouseButton, MouseScrollDelta, ScanCode, VirtualKeyCode};
use std::convert::TryInto;
use web_sys::{HtmlCanvasElement, KeyboardEvent, MouseEvent, PointerEvent, WheelEvent};
pub fn mouse_button(event: &MouseEvent) -> MouseButton {
match event.button() {
0 => MouseButton::Left,
1 => MouseButton::Middle,
2 => MouseButton::Right,
i => MouseButton::Other((i - 3).try_into().expect("very large mouse button value")),
}
}
pub fn mouse_modifiers(event: &MouseEvent) -> ModifiersState {
let mut m = ModifiersState::empty();
m.set(ModifiersState::SHIFT, event.shift_key());
m.set(ModifiersState::CTRL, event.ctrl_key());
m.set(ModifiersState::ALT, event.alt_key());
m.set(ModifiersState::LOGO, event.meta_key());
m
}
pub fn mouse_position(event: &MouseEvent) -> LogicalPosition<f64> {
LogicalPosition {
x: event.offset_x() as f64,
y: event.offset_y() as f64,
}
}
pub fn mouse_delta(event: &MouseEvent) -> LogicalPosition<f64> {
LogicalPosition {
x: event.movement_x() as f64,
y: event.movement_y() as f64,
}
}
pub fn mouse_position_by_client(
event: &MouseEvent,
canvas: &HtmlCanvasElement,
) -> LogicalPosition<f64> {
let bounding_client_rect = canvas.get_bounding_client_rect();
LogicalPosition {
x: event.client_x() as f64 - bounding_client_rect.x(),
y: event.client_y() as f64 - bounding_client_rect.y(),
}
}
pub fn mouse_scroll_delta(event: &WheelEvent) -> Option<MouseScrollDelta> {
let x = -event.delta_x();
let y = -event.delta_y();
match event.delta_mode() {
WheelEvent::DOM_DELTA_LINE => Some(MouseScrollDelta::LineDelta(x as f32, y as f32)),
WheelEvent::DOM_DELTA_PIXEL => {
let delta = LogicalPosition::new(x, y).to_physical(super::scale_factor());
Some(MouseScrollDelta::PixelDelta(delta))
}
_ => None,
}
}
pub fn scan_code(event: &KeyboardEvent) -> ScanCode {
match event.key_code() {
0 => event.char_code(),
i => i,
}
}
pub fn virtual_key_code(event: &KeyboardEvent) -> Option<VirtualKeyCode> {
Some(match &event.code()[..] {
"Digit1" => VirtualKeyCode::Key1,
"Digit2" => VirtualKeyCode::Key2,
"Digit3" => VirtualKeyCode::Key3,
"Digit4" => VirtualKeyCode::Key4,
"Digit5" => VirtualKeyCode::Key5,
"Digit6" => VirtualKeyCode::Key6,
"Digit7" => VirtualKeyCode::Key7,
"Digit8" => VirtualKeyCode::Key8,
"Digit9" => VirtualKeyCode::Key9,
"Digit0" => VirtualKeyCode::Key0,
"KeyA" => VirtualKeyCode::A,
"KeyB" => VirtualKeyCode::B,
"KeyC" => VirtualKeyCode::C,
"KeyD" => VirtualKeyCode::D,
"KeyE" => VirtualKeyCode::E,
"KeyF" => VirtualKeyCode::F,
"KeyG" => VirtualKeyCode::G,
"KeyH" => VirtualKeyCode::H,
"KeyI" => VirtualKeyCode::I,
"KeyJ" => VirtualKeyCode::J,
"KeyK" => VirtualKeyCode::K,
"KeyL" => VirtualKeyCode::L,
"KeyM" => VirtualKeyCode::M,
"KeyN" => VirtualKeyCode::N,
"KeyO" => VirtualKeyCode::O,
"KeyP" => VirtualKeyCode::P,
"KeyQ" => VirtualKeyCode::Q,
"KeyR" => VirtualKeyCode::R,
"KeyS" => VirtualKeyCode::S,
"KeyT" => VirtualKeyCode::T,
"KeyU" => VirtualKeyCode::U,
"KeyV" => VirtualKeyCode::V,
"KeyW" => VirtualKeyCode::W,
"KeyX" => VirtualKeyCode::X,
"KeyY" => VirtualKeyCode::Y,
"KeyZ" => VirtualKeyCode::Z,
"Escape" => VirtualKeyCode::Escape,
"F1" => VirtualKeyCode::F1,
"F2" => VirtualKeyCode::F2,
"F3" => VirtualKeyCode::F3,
"F4" => VirtualKeyCode::F4,
"F5" => VirtualKeyCode::F5,
"F6" => VirtualKeyCode::F6,
"F7" => VirtualKeyCode::F7,
"F8" => VirtualKeyCode::F8,
"F9" => VirtualKeyCode::F9,
"F10" => VirtualKeyCode::F10,
"F11" => VirtualKeyCode::F11,
"F12" => VirtualKeyCode::F12,
"F13" => VirtualKeyCode::F13,
"F14" => VirtualKeyCode::F14,
"F15" => VirtualKeyCode::F15,
"F16" => VirtualKeyCode::F16,
"F17" => VirtualKeyCode::F17,
"F18" => VirtualKeyCode::F18,
"F19" => VirtualKeyCode::F19,
"F20" => VirtualKeyCode::F20,
"F21" => VirtualKeyCode::F21,
"F22" => VirtualKeyCode::F22,
"F23" => VirtualKeyCode::F23,
"F24" => VirtualKeyCode::F24,
"PrintScreen" => VirtualKeyCode::Snapshot,
"ScrollLock" => VirtualKeyCode::Scroll,
"Pause" => VirtualKeyCode::Pause,
"Insert" => VirtualKeyCode::Insert,
"Home" => VirtualKeyCode::Home,
"Delete" => VirtualKeyCode::Delete,
"End" => VirtualKeyCode::End,
"PageDown" => VirtualKeyCode::PageDown,
"PageUp" => VirtualKeyCode::PageUp,
"ArrowLeft" => VirtualKeyCode::Left,
"ArrowUp" => VirtualKeyCode::Up,
"ArrowRight" => VirtualKeyCode::Right,
"ArrowDown" => VirtualKeyCode::Down,
"Backspace" => VirtualKeyCode::Back,
"Enter" => VirtualKeyCode::Return,
"Space" => VirtualKeyCode::Space,
"Compose" => VirtualKeyCode::Compose,
"Caret" => VirtualKeyCode::Caret,
"NumLock" => VirtualKeyCode::Numlock,
"Numpad0" => VirtualKeyCode::Numpad0,
"Numpad1" => VirtualKeyCode::Numpad1,
"Numpad2" => VirtualKeyCode::Numpad2,
"Numpad3" => VirtualKeyCode::Numpad3,
"Numpad4" => VirtualKeyCode::Numpad4,
"Numpad5" => VirtualKeyCode::Numpad5,
"Numpad6" => VirtualKeyCode::Numpad6,
"Numpad7" => VirtualKeyCode::Numpad7,
"Numpad8" => VirtualKeyCode::Numpad8,
"Numpad9" => VirtualKeyCode::Numpad9,
"AbntC1" => VirtualKeyCode::AbntC1,
"AbntC2" => VirtualKeyCode::AbntC2,
"NumpadAdd" => VirtualKeyCode::NumpadAdd,
"Quote" => VirtualKeyCode::Apostrophe,
"Apps" => VirtualKeyCode::Apps,
"At" => VirtualKeyCode::At,
"Ax" => VirtualKeyCode::Ax,
"Backslash" => VirtualKeyCode::Backslash,
"Calculator" => VirtualKeyCode::Calculator,
"Capital" => VirtualKeyCode::Capital,
"Semicolon" => VirtualKeyCode::Semicolon,
"Comma" => VirtualKeyCode::Comma,
"Convert" => VirtualKeyCode::Convert,
"NumpadDecimal" => VirtualKeyCode::NumpadDecimal,
"NumpadDivide" => VirtualKeyCode::NumpadDivide,
"Equal" => VirtualKeyCode::Equals,
"Backquote" => VirtualKeyCode::Grave,
"Kana" => VirtualKeyCode::Kana,
"Kanji" => VirtualKeyCode::Kanji,
"AltLeft" => VirtualKeyCode::LAlt,
"BracketLeft" => VirtualKeyCode::LBracket,
"ControlLeft" => VirtualKeyCode::LControl,
"ShiftLeft" => VirtualKeyCode::LShift,
"MetaLeft" => VirtualKeyCode::LWin,
"Mail" => VirtualKeyCode::Mail,
"MediaSelect" => VirtualKeyCode::MediaSelect,
"MediaStop" => VirtualKeyCode::MediaStop,
"Minus" => VirtualKeyCode::Minus,
"NumpadMultiply" => VirtualKeyCode::NumpadMultiply,
"Mute" => VirtualKeyCode::Mute,
"LaunchMyComputer" => VirtualKeyCode::MyComputer,
"NavigateForward" => VirtualKeyCode::NavigateForward,
"NavigateBackward" => VirtualKeyCode::NavigateBackward,
"NextTrack" => VirtualKeyCode::NextTrack,
"NoConvert" => VirtualKeyCode::NoConvert,
"NumpadComma" => VirtualKeyCode::NumpadComma,
"NumpadEnter" => VirtualKeyCode::NumpadEnter,
"NumpadEquals" => VirtualKeyCode::NumpadEquals,
"OEM102" => VirtualKeyCode::OEM102,
"Period" => VirtualKeyCode::Period,
"PlayPause" => VirtualKeyCode::PlayPause,
"Power" => VirtualKeyCode::Power,
"PrevTrack" => VirtualKeyCode::PrevTrack,
"AltRight" => VirtualKeyCode::RAlt,
"BracketRight" => VirtualKeyCode::RBracket,
"ControlRight" => VirtualKeyCode::RControl,
"ShiftRight" => VirtualKeyCode::RShift,
"MetaRight" => VirtualKeyCode::RWin,
"Slash" => VirtualKeyCode::Slash,
"Sleep" => VirtualKeyCode::Sleep,
"Stop" => VirtualKeyCode::Stop,
"NumpadSubtract" => VirtualKeyCode::NumpadSubtract,
"Sysrq" => VirtualKeyCode::Sysrq,
"Tab" => VirtualKeyCode::Tab,
"Underline" => VirtualKeyCode::Underline,
"Unlabeled" => VirtualKeyCode::Unlabeled,
"AudioVolumeDown" => VirtualKeyCode::VolumeDown,
"AudioVolumeUp" => VirtualKeyCode::VolumeUp,
"Wake" => VirtualKeyCode::Wake,
"WebBack" => VirtualKeyCode::WebBack,
"WebFavorites" => VirtualKeyCode::WebFavorites,
"WebForward" => VirtualKeyCode::WebForward,
"WebHome" => VirtualKeyCode::WebHome,
"WebRefresh" => VirtualKeyCode::WebRefresh,
"WebSearch" => VirtualKeyCode::WebSearch,
"WebStop" => VirtualKeyCode::WebStop,
"Yen" => VirtualKeyCode::Yen,
_ => return None,
})
}
pub fn keyboard_modifiers(event: &KeyboardEvent) -> ModifiersState {
let mut m = ModifiersState::empty();
m.set(ModifiersState::SHIFT, event.shift_key());
m.set(ModifiersState::CTRL, event.ctrl_key());
m.set(ModifiersState::ALT, event.alt_key());
m.set(ModifiersState::LOGO, event.meta_key());
m
}
pub fn codepoint(event: &KeyboardEvent) -> char {
event.key().chars().next().unwrap()
}
pub fn touch_position(event: &PointerEvent, _canvas: &HtmlCanvasElement) -> LogicalPosition<f64> {
LogicalPosition {
x: event.client_x() as f64,
y: event.client_y() as f64,
}
}