@animech-public/playcanvas/build/playcanvas.prf/src/platform/input/mouse-event.js

PlayCanvas WebGL game engine

import { MOUSEBUTTON_NONE } from './constants.js';

function isMousePointerLocked() {
	return !!(document.pointerLockElement || document.mozPointerLockElement || document.webkitPointerLockElement);
}
class MouseEvent {
	constructor(mouse, event) {
		var _event$ctrlKey, _event$altKey, _event$shiftKey, _event$metaKey;
		this.x = 0;
		this.y = 0;
		this.dx = 0;
		this.dy = 0;
		this.button = MOUSEBUTTON_NONE;
		this.wheelDelta = 0;
		this.element = void 0;
		this.ctrlKey = false;
		this.altKey = false;
		this.shiftKey = false;
		this.metaKey = false;
		this.event = void 0;
		let coords = {
			x: 0,
			y: 0
		};
		if (event) {
			if (event instanceof MouseEvent) {
				throw Error('Expected MouseEvent');
			}
			coords = mouse._getTargetCoords(event);
		} else {
			event = {};
		}
		if (coords) {
			this.x = coords.x;
			this.y = coords.y;
		} else if (isMousePointerLocked()) {
			this.x = 0;
			this.y = 0;
		} else {
			return;
		}
		if (event.type === 'wheel') {
			if (event.deltaY > 0) {
				this.wheelDelta = 1;
			} else if (event.deltaY < 0) {
				this.wheelDelta = -1;
			}
		}
		if (isMousePointerLocked()) {
			this.dx = event.movementX || event.webkitMovementX || event.mozMovementX || 0;
			this.dy = event.movementY || event.webkitMovementY || event.mozMovementY || 0;
		} else {
			this.dx = this.x - mouse._lastX;
			this.dy = this.y - mouse._lastY;
		}
		if (event.type === 'mousedown' || event.type === 'mouseup') {
			this.button = event.button;
		}
		this.buttons = mouse._buttons.slice(0);
		this.element = event.target;
		this.ctrlKey = (_event$ctrlKey = event.ctrlKey) != null ? _event$ctrlKey : false;
		this.altKey = (_event$altKey = event.altKey) != null ? _event$altKey : false;
		this.shiftKey = (_event$shiftKey = event.shiftKey) != null ? _event$shiftKey : false;
		this.metaKey = (_event$metaKey = event.metaKey) != null ? _event$metaKey : false;
		this.event = event;
	}
}

export { MouseEvent, isMousePointerLocked };