@instructure/quiz-interactions
Version:
A React UI component Library for quiz interaction types.
127 lines (126 loc) • 4.83 kB
JavaScript
import _classCallCheck from "@babel/runtime/helpers/esm/classCallCheck";
import _createClass from "@babel/runtime/helpers/esm/createClass";
import _possibleConstructorReturn from "@babel/runtime/helpers/esm/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/esm/getPrototypeOf";
import _inherits from "@babel/runtime/helpers/esm/inherits";
import _defineProperty from "@babel/runtime/helpers/esm/defineProperty";
function _callSuper(_this, derived, args) {
function isNativeReflectConstruct() {
if (typeof Reflect === "undefined" || !Reflect.construct) return false;
if (Reflect.construct.sham) return false;
if (typeof Proxy === "function") return true;
try {
return !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {}));
} catch (e) {
return false;
}
}
derived = _getPrototypeOf(derived);
return _possibleConstructorReturn(_this, isNativeReflectConstruct() ? Reflect.construct(derived, args || [], _getPrototypeOf(_this).constructor) : derived.apply(_this, args));
}
import React, { Component } from 'react';
import '../ellipsePolyfill';
import Canvas from '../Canvas';
import canvasPropTypes, { pickProps, defaultProps } from '../Canvas/propTypes';
var Oval = /*#__PURE__*/function (_Component) {
function Oval() {
var _this2;
_classCallCheck(this, Oval);
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
_this2 = _callSuper(this, Oval, [].concat(args));
_defineProperty(_this2, "canvasRef", function (node) {
_this2.canvas = node;
});
// this type needs exactly 2 coordinates to draw a ellipsis
_defineProperty(_this2, "drawShape", function () {
var coordinates = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
if (coordinates.length === 2) {
var ctx = _this2.canvas.canvasElement.getContext('2d');
var pointA = coordinates[0];
var pointB = coordinates[1];
var radiusX = (pointB.x - pointA.x) * 0.5;
var radiusY = (pointB.y - pointA.y) * 0.5;
var centerX = pointA.x + radiusX;
var centerY = pointA.y + radiusY;
_this2.canvas.setFillStyle(); // content
ctx.beginPath();
ctx.ellipse(centerX, centerY, Math.abs(radiusX), Math.abs(radiusY), 0, 0, 2 * Math.PI);
ctx.fill();
_this2.canvas.setStrokeStyle(); // border
ctx.stroke();
}
});
// ===========
// ACTIONS
// ===========
_defineProperty(_this2, "onMouseMove", function (e) {
if (_this2.canvas.isDrawing()) {
var coordinates = _this2.__getOvalCoordinates(e);
_this2.canvas.drawShape(coordinates);
}
});
_defineProperty(_this2, "onMouseDown", function (e) {
if (!_this2.canvas.isDrawing()) {
_this2.canvas.startDrawing(e);
}
});
_defineProperty(_this2, "onMouseUp", function (e) {
if (_this2.canvas.isDrawing()) {
var coordinates = _this2.__getOvalCoordinates(e);
var c1 = coordinates[0];
var c2 = coordinates[1];
// if the release is not at the same position
if (c1.x !== c2.x || c1.y !== c2.y) {
_this2.canvas.stopDrawing(coordinates);
}
}
});
_defineProperty(_this2, "onTouchStart", function (e) {
e.preventDefault();
var evt = _this2.canvas.convertTouchCoordinates(e);
_this2.onMouseDown(evt);
});
_defineProperty(_this2, "onTouchMove", function (e) {
var evt = _this2.canvas.convertTouchCoordinates(e);
_this2.onMouseMove(evt);
});
_defineProperty(_this2, "onTouchEnd", function (e) {
e.preventDefault();
var evt = _this2.canvas.convertTouchCoordinates(e);
_this2.onMouseUp(evt);
});
return _this2;
}
_inherits(Oval, _Component);
return _createClass(Oval, [{
key: "__getOvalCoordinates",
value: function __getOvalCoordinates(e) {
var startPoint = this.canvas.getInitialCoordinate();
var x2 = e.nativeEvent.offsetX;
var y2 = e.nativeEvent.offsetY;
return [startPoint, {
x: x2,
y: y2
}];
}
}, {
key: "render",
value: function render() {
return /*#__PURE__*/React.createElement(Canvas, Object.assign({
realRef: this.canvasRef,
drawShape: this.drawShape,
onMouseMove: this.onMouseMove,
onMouseDown: this.onMouseDown,
onMouseUp: this.onMouseUp,
onTouchStart: this.onTouchStart,
onTouchMove: this.onTouchMove,
onTouchEnd: this.onTouchEnd
}, pickProps(this.props)));
}
}]);
}(Component);
_defineProperty(Oval, "propTypes", canvasPropTypes);
_defineProperty(Oval, "defaultProps", defaultProps);
export { Oval as default };