@symblight/react-stockcharts/es/lib/interactive/components/BackgroundHover.js

Highly customizable stock charts with ReactJS and d3

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

import React, { Component } from "react";
import PropTypes from "prop-types";

import GenericChartComponent from "../../GenericChartComponent";
import { getMouseCanvas } from "../../GenericComponent";

import { noop, hexToRGBA } from "../../utils";

var BackgroundHover = function (_Component) {
    _inherits(BackgroundHover, _Component);

    function BackgroundHover(props) {
        _classCallCheck(this, BackgroundHover);

        var _this = _possibleConstructorReturn(this, (BackgroundHover.__proto__ || Object.getPrototypeOf(BackgroundHover)).call(this, props));

        _this.saveNode = _this.saveNode.bind(_this);
        _this.renderSVG = _this.renderSVG.bind(_this);
        _this.drawOnCanvas = _this.drawOnCanvas.bind(_this);
        _this.isHover = _this.isHover.bind(_this);
        return _this;
    }

    _createClass(BackgroundHover, [{
        key: "saveNode",
        value: function saveNode(node) {
            this.node = node;
        }
    }, {
        key: "isHover",
        value: function isHover(moreProps) {
            var _helper = helper(this.props, moreProps),
                rect = _helper.rect;

            var _moreProps$mouseXY = _slicedToArray(moreProps.mouseXY, 2),
                x = _moreProps$mouseXY[0],
                y = _moreProps$mouseXY[1];

            if (x >= rect.x && y >= rect.y && x <= rect.x + rect.width && y <= rect.y + rect.height) {
                return true;
            }
            return false;
        }
    }, {
        key: "drawOnCanvas",
        value: function drawOnCanvas(ctx, moreProps) {
            var _props = this.props,
                width = _props.width,
                height = _props.height;

            var _helper2 = helper(this.props, moreProps),
                rect = _helper2.rect;

            ctx.globalCompositeOperation = "destination-over";
            ctx.fillStyle = hexToRGBA("#74b9ff", 0.3);

            ctx.beginPath();
            ctx.fillRect(rect.x, rect.y, width, height);
            ctx.setTransform(1, 1, 1, 1, 1, 0);

            ctx.beginPath();
            ctx.restore();
        }
    }, {
        key: "renderSVG",
        value: function renderSVG(moreProps, e) {
            var _props2 = this.props,
                cx = _props2.cx,
                cy = _props2.cy,
                width = _props2.width,
                onHover = _props2.onHover,
                onUnHover = _props2.onUnHover,
                height = _props2.height,
                fill = _props2.fill;

            return React.createElement(
                "g",
                null,
                React.createElement("rect", {
                    fill: "#e2e2e2",
                    x: cx,
                    y: cy,
                    width: width,
                    height: height,
                    onMouseMove: function onMouseMove() {
                        onHover(_extends({}, moreProps, { hovering: true, show: true }), e);
                    },
                    onMouseEnter: function onMouseEnter() {
                        onHover(_extends({}, moreProps, { hovering: true, show: true }), e);
                    },
                    onMouseLeave: function onMouseLeave() {
                        onUnHover(moreProps, e);
                    }
                })
            );
        }
    }, {
        key: "render",
        value: function render() {
            var interactiveCursorClass = this.props.interactiveCursorClass;
            var show = this.props.show;
            var _props3 = this.props,
                onDragStart = _props3.onDragStart,
                onDrag = _props3.onDrag,
                onDragComplete = _props3.onDragComplete;


            return show ? React.createElement(GenericChartComponent, {
                ref: this.saveNode,
                interactiveCursorClass: interactiveCursorClass,
                selected: true,
                isHover: this.isHover,
                onDragStart: onDragStart,
                onDrag: onDrag,
                onDragComplete: onDragComplete,
                svgDraw: this.renderSVG,
                canvasDraw: this.drawOnCanvas,
                canvasToDraw: getMouseCanvas,
                drawOn: ["pan", "mousemove", "drag"]
            }) : null;
        }
    }]);

    return BackgroundHover;
}(Component);

function helper(props, moreProps) {
    var position = props.position,
        width = props.width,
        height = props.height;
    var xScale = moreProps.xScale,
        yScale = moreProps.chartConfig.yScale;

    var _position = _slicedToArray(position, 2),
        xValue = _position[0],
        yValue = _position[1];

    var x = xScale(xValue) - width / 2;
    var y = yScale(yValue) - height / 2;

    var rect = {
        x: x,
        y: y,
        width: width,
        height: height
    };

    return {
        x: x,
        y: y,
        rect: rect
    };
}

BackgroundHover.propTypes = {
    onDragStart: PropTypes.func.isRequired,
    onDrag: PropTypes.func.isRequired,
    onDragComplete: PropTypes.func.isRequired,
    fill: PropTypes.string.isRequired,

    cx: PropTypes.number,
    cy: PropTypes.number,

    className: PropTypes.string.isRequired,
    show: PropTypes.bool.isRequired,
    strokeOpacity: PropTypes.number.isRequired,
    fillOpacity: PropTypes.number.isRequired,
    interactiveCursorClass: PropTypes.string
};

BackgroundHover.defaultProps = {
    className: "react-stockcharts-interactive-line-edge",
    onDragStart: noop,
    onDrag: noop,
    onDragComplete: noop,
    onMove: noop,
    show: false,
    fillOpacity: 1,
    strokeOpacity: 1,
    fill: "#74b9ff"
};

export default BackgroundHover;
//# sourceMappingURL=BackgroundHover.js.map