@enact/ui
Version:
A collection of simplified unstyled cross-platform UI components for Enact
184 lines (181 loc) • 7.55 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.pinchConfigPropType = exports.defaultPinchConfig = exports["default"] = exports.Pinch = void 0;
var _clamp = _interopRequireDefault(require("ramda/src/clamp"));
var _propTypes = _interopRequireDefault(require("prop-types"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _defineProperties(e, r) { for (var t = 0; t < r.length; t++) { var o = r[t]; o.enumerable = o.enumerable || !1, o.configurable = !0, "value" in o && (o.writable = !0), Object.defineProperty(e, _toPropertyKey(o.key), o); } }
function _createClass(e, r, t) { return r && _defineProperties(e.prototype, r), t && _defineProperties(e, t), Object.defineProperty(e, "prototype", { writable: !1 }), e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != typeof t || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != typeof i) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
function _classCallCheck(a, n) { if (!(a instanceof n)) throw new TypeError("Cannot call a class as a function"); }
var Pinch = exports.Pinch = /*#__PURE__*/_createClass(function Pinch() {
var _this = this;
_classCallCheck(this, Pinch);
this.pinchConfig = null;
this.startScale = 1.0;
this.scale = 1.0;
this.isPinching = function () {
return _this.pinchConfig != null;
};
this.setContainerBounds = function (node) {
var _this$pinchConfig = _this.pinchConfig,
isGlobal = _this$pinchConfig.global,
boxSizing = _this$pinchConfig.boxSizing;
var bounds = null;
if (typeof window === 'undefined' || !node) return;
if (isGlobal) {
bounds = {
minX: 0,
minY: 0,
maxX: window.innerWidth,
maxY: window.innerHeight
};
} else {
bounds = node.getBoundingClientRect();
// adjust for padding when using content-box
if (boxSizing === 'content-box') {
var computedStyle = window.getComputedStyle(node);
bounds = {
minX: bounds.left + parseInt(computedStyle.paddingLeft),
minY: bounds.top + parseInt(computedStyle.paddingTop),
maxX: bounds.right - parseInt(computedStyle.paddingRight),
maxY: bounds.bottom - parseInt(computedStyle.paddingBottom)
};
} else {
bounds = {
minX: bounds.left,
minY: bounds.top,
maxX: bounds.right,
maxY: bounds.bottom
};
}
}
_this.bounds = bounds;
};
this.getBoundsCoords = function (_ref) {
var x = _ref.x,
y = _ref.y;
var _this$bounds = _this.bounds,
maxX = _this$bounds.maxX,
maxY = _this$bounds.maxY,
minX = _this$bounds.minX,
minY = _this$bounds.minY;
return {
x: (0, _clamp["default"])(minX, maxX, x) - minX,
y: (0, _clamp["default"])(minY, maxY, y) - minY
};
};
this.getDistance = function (coords) {
if (Array.isArray(coords)) {
var _this$getBoundsCoords = _this.getBoundsCoords(coords[0]),
x1 = _this$getBoundsCoords.x,
y1 = _this$getBoundsCoords.y;
var _this$getBoundsCoords2 = _this.getBoundsCoords(coords[1]),
x2 = _this$getBoundsCoords2.x,
y2 = _this$getBoundsCoords2.y;
var dx = x1 - x2;
var dy = y1 - y2;
return Math.sqrt(dx * dx + dy * dy);
}
return 0;
};
this.updateScale = function (scale) {
var _this$pinchConfig2 = _this.pinchConfig,
maxScale = _this$pinchConfig2.maxScale,
minScale = _this$pinchConfig2.minScale;
var newScale = (0, _clamp["default"])(minScale, maxScale, scale);
if (newScale !== _this.scale) {
_this.scale = newScale;
return true;
}
return false;
};
this.begin = function (config, _ref2, coords, node) {
var noResume = _ref2.noResume,
onPinch = _ref2.onPinch,
onPinchEnd = _ref2.onPinchEnd,
onPinchStart = _ref2.onPinchStart;
if (!onPinch && !onPinchStart && !onPinchEnd) {
return;
}
_this.pinchConfig = _objectSpread(_objectSpread({}, config), {}, {
node: node,
resume: !noResume
});
_this.setContainerBounds(node);
_this.startDist = _this.getDistance(coords);
_this.previousDist = _this.startDist;
_this.startScale = _this.scale;
_this.onPinch = onPinch;
_this.onPinchStart = onPinchStart;
_this.onPinchEnd = onPinchEnd;
if (_this.onPinchStart) {
_this.onPinchStart({
type: 'onPinchStart',
coords: coords
});
}
};
// This method will get the `onPinch`, `onPinchEnd`, and `onPinchStart` props.
this.updateProps = function (_ref3) {
var onPinch = _ref3.onPinch,
onPinchEnd = _ref3.onPinchEnd,
onPinchStart = _ref3.onPinchStart;
// Check `isPinching` gesture is not in progress. Check if gesture exists before updating the references to the `pinchConfig`
if (!_this.isPinching()) return;
// This will update the `pinchConfig` with the new value
_this.onPinch = onPinch;
_this.onPinchStart = onPinchStart;
_this.onPinchEnd = onPinchEnd;
};
this.move = function (coords) {
if (!_this.isPinching()) return;
var moveTolerance = _this.pinchConfig.moveTolerance;
var currentDist = _this.getDistance(coords);
var scale = currentDist / _this.startDist * _this.startScale;
if (Math.abs(_this.previousDist - currentDist) > moveTolerance && _this.onPinch && _this.updateScale(scale)) {
_this.onPinch({
type: 'onPinch',
scale: _this.scale,
coords: coords
});
_this.previousDist = currentDist;
}
};
this.blur = function () {
if (!_this.isPinching()) return;
if (!_this.pinchConfig.global) {
_this.end();
}
};
this.end = function () {
if (!_this.isPinching()) return;
if (_this.onPinchEnd) {
_this.onPinchEnd({
type: 'onPinchEnd'
});
}
_this.pinchConfig = null;
};
});
var defaultPinchConfig = exports.defaultPinchConfig = {
boxSizing: 'border-box',
global: false,
maxScale: 4,
minScale: 0.5,
moveTolerance: 16
};
var pinchConfigPropType = exports.pinchConfigPropType = _propTypes["default"].shape({
boxSizing: _propTypes["default"].string,
global: _propTypes["default"].bool,
maxScale: _propTypes["default"].number,
minScale: _propTypes["default"].number,
moveTolerance: _propTypes["default"].number
});
var _default = exports["default"] = Pinch;