playcanvas
Version:
Open-source WebGL/WebGPU 3D engine for the web
133 lines (132 loc) • 4.13 kB
JavaScript
var __defProp = Object.defineProperty;
var __defNormalProp = (obj, key, value) => key in obj ? __defProp(obj, key, { enumerable: true, configurable: true, writable: true, value }) : obj[key] = value;
var __publicField = (obj, key, value) => __defNormalProp(obj, typeof key !== "symbol" ? key + "" : key, value);
import { MOUSEBUTTON_NONE } from "./constants.js";
function isMousePointerLocked() {
return !!(document.pointerLockElement || document.mozPointerLockElement || document.webkitPointerLockElement);
}
class MouseEvent {
/**
* Create a new MouseEvent instance.
*
* @param {Mouse} mouse - The Mouse device that is firing this event.
* @param {globalThis.MouseEvent|globalThis.WheelEvent} event - The original browser event that fired.
*/
constructor(mouse, event) {
/**
* The x coordinate of the mouse pointer relative to the element {@link Mouse} is attached to.
*/
__publicField(this, "x", 0);
/**
* The y coordinate of the mouse pointer relative to the element {@link Mouse} is attached to.
*/
__publicField(this, "y", 0);
/**
* The change in x coordinate since the last mouse event.
*/
__publicField(this, "dx", 0);
/**
* The change in y coordinate since the last mouse event.
*/
__publicField(this, "dy", 0);
/**
* The mouse button associated with this event. Can be:
*
* - {@link MOUSEBUTTON_LEFT}
* - {@link MOUSEBUTTON_MIDDLE}
* - {@link MOUSEBUTTON_RIGHT}
*
* @type {number}
*/
__publicField(this, "button", MOUSEBUTTON_NONE);
/**
* The pressed state of all mouse buttons at the time this event was fired. A 3-element
* array of booleans for left, middle and right buttons respectively.
*
* @type {boolean[]}
*/
__publicField(this, "buttons");
/**
* A value representing the amount the mouse wheel has moved, only valid for
* {@link Mouse.EVENT_MOUSEWHEEL} events.
*/
__publicField(this, "wheelDelta", 0);
/**
* The element that the mouse was fired from.
*
* @type {Element}
*/
__publicField(this, "element");
/**
* True if the ctrl key was pressed when this event was fired.
*/
__publicField(this, "ctrlKey", false);
/**
* True if the alt key was pressed when this event was fired.
*/
__publicField(this, "altKey", false);
/**
* True if the shift key was pressed when this event was fired.
*/
__publicField(this, "shiftKey", false);
/**
* True if the meta key was pressed when this event was fired.
*/
__publicField(this, "metaKey", false);
/**
* The original browser event.
*
* @type {globalThis.MouseEvent|globalThis.WheelEvent}
*/
__publicField(this, "event");
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 ?? false;
this.altKey = event.altKey ?? false;
this.shiftKey = event.shiftKey ?? false;
this.metaKey = event.metaKey ?? false;
this.event = event;
}
}
export {
MouseEvent,
isMousePointerLocked
};