vevet
Version:
Vevet is a JavaScript library for creative development that simplifies crafting rich interactions like split text animations, carousels, marquees, preloading, and more.
464 lines • 18.4 kB
JavaScript
"use strict";
var __extends = (this && this.__extends) || (function () {
var extendStatics = function (d, b) {
extendStatics = Object.setPrototypeOf ||
({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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return extendStatics(d, b);
};
return function (d, b) {
if (typeof b !== "function" && b !== null)
throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
extendStatics(d, b);
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
})();
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
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}
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return __assign.apply(this, arguments);
};
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if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
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desc = { enumerable: true, get: function() { return m[k]; } };
}
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var __exportStar = (this && this.__exportStar) || function(m, exports) {
for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Pointers = void 0;
var base_1 = require("../../base");
var env_1 = require("../../internal/env");
var isNumber_1 = require("../../internal/isNumber");
var unwrapAngle_1 = require("../../internal/unwrapAngle");
var utils_1 = require("../../utils");
var props_1 = require("./props");
var styles_1 = require("./styles");
__exportStar(require("./types"), exports);
/**
* Manages pointer events, including tracking multiple pointers,
* and emitting callbacks for pointer interactions.
*
* For proper functionality, ensure the container has an appropriate
* [touch-action](https://developer.mozilla.org/en-US/docs/Web/CSS/touch-action) property.
*
* [Documentation](https://vevetjs.com/docs/Pointers)
*
* @group Components
*/
var Pointers = /** @class */ (function (_super) {
__extends(Pointers, _super);
function Pointers(props, onCallbacks) {
var _this = _super.call(this, props, onCallbacks) || this;
/**
* Stores active event listeners for runtime interactions.
*/
_this._listeners = [];
/** Indicates whether the `start` event has been triggered. */
_this._isStarted = false;
/** Save minPointers value */
_this._saveMinPointers = 1;
/** Move data. */
_this._moveData = null;
/** Whether a microtask `move` emit is scheduled. */
_this._moveScheduled = false;
/** Angle data */
_this._angle = { raw: 0, unwrapped: 0, unwrappedStart: 0 };
// Defaults
_this._pointersMap = new Map();
// Setup base events
_this._setBaseEvents();
return _this;
}
/**
* Returns the default static properties.
*/
Pointers.prototype._getStatic = function () {
return __assign(__assign({}, _super.prototype._getStatic.call(this)), props_1.STATIC_PROPS);
};
/**
* Returns the default mutable properties.
*/
Pointers.prototype._getMutable = function () {
return __assign(__assign({}, _super.prototype._getMutable.call(this)), props_1.MUTABLE_PROPS);
};
Object.defineProperty(Pointers.prototype, "isStarted", {
/** Indicates whether the `start` event has been triggered. */
get: function () {
return this._isStarted;
},
enumerable: false,
configurable: true
});
Object.defineProperty(Pointers.prototype, "pointersMap", {
/** Returns the map of active pointers. */
get: function () {
return this._pointersMap;
},
enumerable: false,
configurable: true
});
Object.defineProperty(Pointers.prototype, "container", {
/** Returns the container element handling events. */
get: function () {
return this.props.container;
},
enumerable: false,
configurable: true
});
Object.defineProperty(Pointers.prototype, "move", {
/** Move data */
get: function () {
return this._moveData;
},
enumerable: false,
configurable: true
});
/** Get buttons */
Pointers.prototype._getButtons = function (type) {
var buttons = this.props.buttons;
return Array.isArray(buttons) ? buttons : buttons(type);
};
/** Get max pointers */
Pointers.prototype._getMinPointers = function (type) {
var minPointers = this.props.minPointers;
return (0, utils_1.clamp)((0, isNumber_1.isNumber)(minPointers) ? minPointers : minPointers(type), 1, Infinity);
};
/** Get max pointers */
Pointers.prototype._getMaxPointers = function (type) {
var maxPointers = this.props.maxPointers;
return (0, utils_1.clamp)((0, isNumber_1.isNumber)(maxPointers) ? maxPointers : maxPointers(type), this._getMinPointers(type), Infinity);
};
/** Normalize pointer event type */
Pointers.prototype._getPointerType = function (event) {
var types = ['mouse', 'touch'];
if (types.includes(event.pointerType)) {
return event.pointerType;
}
return 'mouse';
};
/**
* Attaches base event listeners to the container.
*/
Pointers.prototype._setBaseEvents = function () {
var _this = this;
var container = this.container;
var pointerdown = (0, utils_1.addEventListener)(container, 'pointerdown', function (event) {
return _this._handlePointerDown(event);
});
var dragstart = (0, utils_1.addEventListener)(container, 'dragstart', function (event) { return event.preventDefault(); }, { passive: false });
var centralMouseDown = (0, utils_1.addEventListener)(container, 'mousedown', function (event) {
if (_this._getButtons('mouse').includes(1)) {
event.preventDefault();
}
}, { passive: false });
var contextmenu = (0, utils_1.addEventListener)(container, 'contextmenu', function (event) {
if (_this._getButtons('mouse').includes(2)) {
event.preventDefault();
}
}, { passive: false });
this.onDestroy(function () {
pointerdown();
dragstart();
centralMouseDown();
contextmenu();
});
};
/**
* Attaches runtime event listeners for active pointer interactions.
*/
Pointers.prototype._setRuntimeEvents = function () {
var _this = this;
var listeners = this._listeners;
if (listeners.length > 0) {
return;
}
var pointermove = (0, utils_1.addEventListener)(window, 'pointermove', function (event) { return _this._handlePointerMove(event); }, { passive: false });
var pointerup = (0, utils_1.addEventListener)(window, 'pointerup', function (event) { return _this._handlePointerUp(event); }, { passive: false });
var pointercancel = (0, utils_1.addEventListener)(window, 'pointercancel', function () { return _this._handleCancel(); }, { passive: false });
var blur = (0, utils_1.addEventListener)(window, 'blur', function () { return _this._handleCancel(); });
this._listeners = [pointermove, pointerup, pointercancel, blur];
};
/**
* Handles pointer down events (`pointerdown`).
* Adds a new pointer if conditions are met and triggers the `pointerdown` callback.
*/
Pointers.prototype._handlePointerDown = function (event) {
var props = this.props;
var _a = this._decodeCoords(event), x = _a.x, y = _a.y;
var pointerType = this._getPointerType(event);
var buttons = this._getButtons(pointerType);
var minPointers = this._getMinPointers(pointerType);
this._saveMinPointers = minPointers;
var maxPointers = this._getMaxPointers(pointerType);
if (!props.enabled) {
return;
}
// check if button type is allowed
if (!buttons.includes(event.button)) {
return;
}
// Check if pointer already exists or no more pointers allowed
var hasPointer = this.pointersMap.get(event.pointerId);
if (hasPointer || this.pointersMap.size >= maxPointers) {
return;
}
// Add new pointer
var pointer = {
id: event.pointerId,
index: this.pointersMap.size,
start: { x: x, y: y },
prev: { x: x, y: y },
current: { x: x, y: y },
diff: { x: 0, y: 0 },
step: { x: 0, y: 0 },
accum: { x: 0, y: 0 },
};
this.pointersMap.set(event.pointerId, pointer);
// update indices
var index = 0;
this.pointersMap.forEach(function (currentPointer) {
currentPointer.index = index;
index += 1;
});
// Start callback
if (this.pointersMap.size === minPointers) {
this._isStarted = true;
this.callbacks.emit('start', undefined);
}
// Add runtime events
this._setRuntimeEvents();
// Apply styles to prevent user-select
if (props.disableUserSelect) {
env_1.body.append(styles_1.styles);
}
// Trigger start callback
this.callbacks.emit('pointerdown', { event: event, pointer: pointer });
};
/**
* Handles pointer movement (`pointermove`).
* Updates pointer positions and triggers the `pointermove` callback.
*/
Pointers.prototype._handlePointerMove = function (event) {
var pointer = this.pointersMap.get(event.pointerId);
if (!pointer) {
return;
}
if (!this.props.enabled) {
return;
}
var _a = this._decodeCoords(event), x = _a.x, y = _a.y;
// Update previous and current coordinates
pointer.prev = __assign({}, pointer.current);
pointer.current = { x: x, y: y };
// Update diff
pointer.diff.x = pointer.current.x - pointer.start.x;
pointer.diff.y = pointer.current.y - pointer.start.y;
// Update step
pointer.step.x = pointer.current.x - pointer.prev.x;
pointer.step.y = pointer.current.y - pointer.prev.y;
// Update total movement
pointer.accum.x += Math.abs(pointer.step.x);
pointer.accum.y += Math.abs(pointer.step.y);
// Trigger 'move' callback with relevant data
this.callbacks.emit('pointermove', { event: event, pointer: pointer });
if (this._isStarted) {
this._updateMove();
this._scheduleMove();
}
};
/**
* Handles pointer release (`pointerup`).
* Removes the pointer and triggers the `pointerup` callback.
* If no active pointers remain, fires the `end` callback.
*/
Pointers.prototype._handlePointerUp = function (event) {
// check if pointer exists
var pointer = this.pointersMap.get(event.pointerId);
// Get min-pointers
var minPointers = this._getMinPointers(this._getPointerType(event));
if (!pointer) {
return;
}
// Trigger callbacks
this.callbacks.emit('pointerup', { pointer: pointer });
// delete pointer
this.pointersMap.delete(event.pointerId);
// end if no pointers left
if (this.pointersMap.size < minPointers && this._isStarted) {
this._isStarted = false;
this._moveData = null;
this._angle = { raw: 0, unwrapped: 0, unwrappedStart: 0 };
this.callbacks.emit('end', undefined);
}
// cancel
if (this.pointersMap.size === 0) {
this._cleanup();
}
};
/**
* Handles event cancellations (`pointercancel`, `blur`).
* Triggers the `end` callback and cleans up all pointers.
*/
Pointers.prototype._handleCancel = function () {
var _this = this;
this.callbacks.emit('end', undefined);
// Trigger callbacks for all pointers
this.pointersMap.forEach(function (pointer) {
_this.callbacks.emit('pointerup', { pointer: pointer });
});
this._cleanup();
};
/**
* Prevents text selection during pointer interactions.
*/
Pointers.prototype._resetSelection = function () {
var _a, _b;
(_a = window.getSelection()) === null || _a === void 0 ? void 0 : _a.empty();
(_b = window.getSelection()) === null || _b === void 0 ? void 0 : _b.removeAllRanges();
};
/**
* Returns pointer coordinates relative to the container.
*/
Pointers.prototype._decodeCoords = function (event) {
var _a = this, container = _a.container, props = _a.props;
if (!props.relative) {
return { x: event.clientX, y: event.clientY };
}
var bounding = container.getBoundingClientRect();
var x = event.clientX - bounding.left;
var y = event.clientY - bounding.top;
return { x: x, y: y };
};
/** Update move data */
Pointers.prototype._updateMove = function () {
var pointers = Array.from(this.pointersMap.values()).sort(function (a, b) { return a.index - b.index; });
var currents = pointers.map(function (_a) {
var current = _a.current;
return current;
});
var center = this._getAverageCenter(currents);
var distance = Math.max(this._getAverageDistance(currents), 0.001);
var rawAngle = this._getAngle(currents);
if (!this._moveData) {
this._angle = {
raw: rawAngle,
unwrapped: rawAngle,
unwrappedStart: rawAngle,
};
this._moveData = {
center: center,
prevCenter: __assign({}, center),
startCenter: __assign({}, center),
distance: distance,
prevDistance: distance,
startDistance: distance,
scale: 1,
prevScale: 1,
angle: 0,
prevAngle: 0,
};
return;
}
this._moveData.prevCenter = __assign({}, this._moveData.center);
this._moveData.center = __assign({}, center);
this._moveData.prevDistance = this._moveData.distance;
this._moveData.distance = distance;
if (pointers.length >= 2) {
this._moveData.prevScale = this._moveData.scale;
this._moveData.scale = distance / this._moveData.startDistance;
this._angle.unwrapped += (0, unwrapAngle_1.unwrapAngleDelta)(rawAngle, this._angle.raw);
this._angle.raw = rawAngle;
this._moveData.prevAngle = this._moveData.angle;
this._moveData.angle = this._angle.unwrapped - this._angle.unwrappedStart;
}
};
/** Returns the angle between the first two pointers (deg). */
Pointers.prototype._getAngle = function (points) {
if (points.length < 2) {
return 0;
}
var first = points[0], second = points[1];
return (Math.atan2(second.y - first.y, second.x - first.x) * 180) / Math.PI;
};
/** Returns the average center position of points. */
Pointers.prototype._getAverageCenter = function (points) {
if (points.length === 1) {
return points[0];
}
var sum = points.reduce(function (acc, p) { return ({
x: acc.x + p.x,
y: acc.y + p.y,
}); }, { x: 0, y: 0 });
return {
x: sum.x / points.length,
y: sum.y / points.length,
};
};
/** Returns the average distance between points */
Pointers.prototype._getAverageDistance = function (points) {
if (points.length <= 1) {
return 0;
}
var center = this._getAverageCenter(points);
var total = points.reduce(function (sum, p) { return sum + Math.hypot(p.x - center.x, p.y - center.y); }, 0);
return total / points.length;
};
/** Schedules a deduplicated `move` callback for the current microtask. */
Pointers.prototype._scheduleMove = function () {
var _this = this;
if (this._moveScheduled) {
return;
}
this._moveScheduled = true;
queueMicrotask(function () {
_this._moveScheduled = false;
if (!_this._isStarted ||
_this.pointersMap.size < _this._saveMinPointers ||
!_this._moveData) {
return;
}
_this.callbacks.emit('move', _this._moveData);
});
};
/**
* Cleans up event listeners, pointers, and injected styles.
*/
Pointers.prototype._cleanup = function () {
this._listeners.forEach(function (listener) { return listener(); });
this._listeners = [];
this._isStarted = false;
this._moveScheduled = false;
this._moveData = null;
this._angle = { raw: 0, unwrapped: 0, unwrappedStart: 0 };
this.pointersMap.clear();
if (this.props.disableUserSelect) {
this._resetSelection();
styles_1.styles === null || styles_1.styles === void 0 ? void 0 : styles_1.styles.remove();
}
};
/**
* Destroys the component and removes all event listeners.
*/
Pointers.prototype._destroy = function () {
this._cleanup();
_super.prototype._destroy.call(this);
};
return Pointers;
}(base_1.Module));
exports.Pointers = Pointers;
//# sourceMappingURL=index.js.map