@instructure/quiz-interactions
Version:
A React UI component Library for quiz interaction types.
230 lines (229 loc) • 8.98 kB
JavaScript
function _assert_this_initialized(self) {
if (self === void 0) {
throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
}
return self;
}
function _call_super(_this, derived, args) {
derived = _get_prototype_of(derived);
return _possible_constructor_return(_this, _is_native_reflect_construct() ? Reflect.construct(derived, args || [], _get_prototype_of(_this).constructor) : derived.apply(_this, args));
}
function _class_call_check(instance, Constructor) {
if (!(instance instanceof Constructor)) {
throw new TypeError("Cannot call a class as a function");
}
}
function _defineProperties(target, props) {
for(var i = 0; i < props.length; i++){
var descriptor = props[i];
descriptor.enumerable = descriptor.enumerable || false;
descriptor.configurable = true;
if ("value" in descriptor) descriptor.writable = true;
Object.defineProperty(target, descriptor.key, descriptor);
}
}
function _create_class(Constructor, protoProps, staticProps) {
if (protoProps) _defineProperties(Constructor.prototype, protoProps);
if (staticProps) _defineProperties(Constructor, staticProps);
return Constructor;
}
function _define_property(obj, key, value) {
if (key in obj) {
Object.defineProperty(obj, key, {
value: value,
enumerable: true,
configurable: true,
writable: true
});
} else {
obj[key] = value;
}
return obj;
}
function _get_prototype_of(o) {
_get_prototype_of = Object.setPrototypeOf ? Object.getPrototypeOf : function getPrototypeOf(o) {
return o.__proto__ || Object.getPrototypeOf(o);
};
return _get_prototype_of(o);
}
function _inherits(subClass, superClass) {
if (typeof superClass !== "function" && superClass !== null) {
throw new TypeError("Super expression must either be null or a function");
}
subClass.prototype = Object.create(superClass && superClass.prototype, {
constructor: {
value: subClass,
writable: true,
configurable: true
}
});
if (superClass) _set_prototype_of(subClass, superClass);
}
function _object_spread(target) {
for(var i = 1; i < arguments.length; i++){
var source = arguments[i] != null ? arguments[i] : {};
var ownKeys = Object.keys(source);
if (typeof Object.getOwnPropertySymbols === "function") {
ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function(sym) {
return Object.getOwnPropertyDescriptor(source, sym).enumerable;
}));
}
ownKeys.forEach(function(key) {
_define_property(target, key, source[key]);
});
}
return target;
}
function _possible_constructor_return(self, call) {
if (call && (_type_of(call) === "object" || typeof call === "function")) {
return call;
}
return _assert_this_initialized(self);
}
function _set_prototype_of(o, p) {
_set_prototype_of = Object.setPrototypeOf || function setPrototypeOf(o, p) {
o.__proto__ = p;
return o;
};
return _set_prototype_of(o, p);
}
function _type_of(obj) {
"@swc/helpers - typeof";
return obj && typeof Symbol !== "undefined" && obj.constructor === Symbol ? "symbol" : typeof obj;
}
function _is_native_reflect_construct() {
try {
var result = !Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function() {}));
} catch (_) {}
return (_is_native_reflect_construct = function() {
return !!result;
})();
}
import React, { Component } from 'react';
import Canvas from '../Canvas';
import canvasPropTypes, { pickProps, defaultProps } from '../Canvas/propTypes';
var Polygon = /*#__PURE__*/ function(Component) {
"use strict";
_inherits(Polygon, Component);
function Polygon() {
_class_call_check(this, Polygon);
var _this;
_this = _call_super(this, Polygon, arguments), _define_property(_this, "canvasRef", function(node) {
_this.canvas = node;
}), _define_property(_this, "drawShape", function(coordinates) {
if (coordinates.length === 0) return;
var ctx = _this.canvas.canvasElement.getContext('2d');
_this.canvas.setStrokeStyle();
coordinates.forEach(function(item, index, array) {
var nextCoordinate = array[index + 1];
if (nextCoordinate !== void 0) {
var initialCoord = null;
if (index === 0) {
initialCoord = item;
}
_this.__drawLine(initialCoord, nextCoordinate);
}
});
_this.canvas.setFillStyle();
ctx.fill();
}), _define_property(_this, "onMouseMove", function(e) {
if (_this.canvas.isDrawing()) {
_this.clearCanvas();
var currentCoordinate = _this.canvas.getCurrentCoordinates(e);
var lines = _this.props.coordinates.concat([
currentCoordinate
]) // add temporary coordinate
;
// add initial coordinate at the end of the array to close the polygon
if (lines.length > 2) {
lines = lines.concat([
lines[0]
]);
}
_this.drawShape(lines);
}
}), _define_property(_this, "onMouseOut", function(e) {
if (_this.canvas.isDrawing()) {
var initialCoordinate = _this.canvas.getInitialCoordinate();
var newCoordinates = _this.props.coordinates.concat([
initialCoordinate
]);
if (newCoordinates.length > 3) {
_this.clearCanvas();
_this.drawShape(newCoordinates);
_this.canvas.stopDrawing(newCoordinates);
}
}
}), _define_property(_this, "onDoubleClick", function() {
_this.clearCanvas();
var initialCoordinate = _this.canvas.getInitialCoordinate();
var newCoordinates = _this.props.coordinates.concat([
initialCoordinate
]);
_this.drawShape(newCoordinates);
if (_this.canvas.isDrawing()) {
_this.canvas.stopDrawing(newCoordinates);
}
}), _define_property(_this, "onClick", function(e) {
if (_this.canvas.isDrawing()) {
_this.clearCanvas();
var currentCoordinate = _this.canvas.getCurrentCoordinates(e);
var lastCoordinate = _this.canvas.getLastCoordinate();
if (currentCoordinate.x === lastCoordinate.x && currentCoordinate.y === lastCoordinate.y) {
return; // in case the user click at the same point, this click is discarded
}
var newCoordinates = _this.props.coordinates.concat([
currentCoordinate
]);
_this.drawShape(newCoordinates);
_this.props.handleSetCoordinates(newCoordinates, true);
} else {
_this.canvas.startDrawing(e);
}
});
return _this;
}
_create_class(Polygon, [
{
key: "__drawLine",
value: function __drawLine(begin, end) {
var ctx = this.canvas.canvasElement.getContext('2d');
if (begin) {
ctx.beginPath();
ctx.moveTo(begin.x, begin.y);
}
ctx.lineTo(end.x, end.y);
ctx.stroke();
}
},
{
// ===========
// ACTIONS
// ===========
key: "clearCanvas",
value: function clearCanvas() {
var ctx = this.canvas.canvasElement.getContext('2d');
ctx.clearRect(0, 0, this.canvas.canvasElement.width, this.canvas.canvasElement.height);
ctx.beginPath();
ctx.closePath();
}
},
{
key: "render",
value: function render() {
return /*#__PURE__*/ React.createElement(Canvas, _object_spread({
realRef: this.canvasRef,
drawShape: this.drawShape,
onMouseMove: this.onMouseMove,
onMouseOut: this.onMouseOut,
onDoubleClick: this.onDoubleClick,
onClick: this.onClick
}, pickProps(this.props)));
}
}
]);
return Polygon;
}(Component);
_define_property(Polygon, "propTypes", canvasPropTypes);
_define_property(Polygon, "defaultProps", defaultProps);
export { Polygon as default };