UNPKG

@blueprintjs/core

Version:
105 lines 5.63 kB
"use strict"; /* * Copyright 2015 Palantir Technologies, Inc. All rights reserved. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ Object.defineProperty(exports, "__esModule", { value: true }); var tslib_1 = require("tslib"); var classnames_1 = tslib_1.__importDefault(require("classnames")); var React = tslib_1.__importStar(require("react")); var react_lifecycles_compat_1 = require("react-lifecycles-compat"); var common_1 = require("../../common"); var errors_1 = require("../../common/errors"); var props_1 = require("../../common/props"); var utils_1 = require("../../common/utils"); // see http://stackoverflow.com/a/18473154/3124288 for calculating arc path var R = 45; var SPINNER_TRACK = "M 50,50 m 0,-" + R + " a " + R + "," + R + " 0 1 1 0," + R * 2 + " a " + R + "," + R + " 0 1 1 0,-" + R * 2; // unitless total length of SVG path, to which stroke-dash* properties are relative. // https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/pathLength // this value is the result of `<path d={SPINNER_TRACK} />.getTotalLength()` and works in all browsers: var PATH_LENGTH = 280; var MIN_SIZE = 10; var STROKE_WIDTH = 4; var MIN_STROKE_WIDTH = 16; var Spinner = /** @class */ (function (_super) { tslib_1.__extends(Spinner, _super); function Spinner() { return _super !== null && _super.apply(this, arguments) || this; } Spinner_1 = Spinner; Spinner.prototype.componentDidUpdate = function (prevProps) { if (prevProps.value !== this.props.value) { // IE/Edge: re-render after changing value to force SVG update this.forceUpdate(); } }; Spinner.prototype.render = function () { var _a; var _b = this.props, className = _b.className, intent = _b.intent, value = _b.value, _c = _b.tagName, tagName = _c === void 0 ? "div" : _c; var size = this.getSize(); var classes = classnames_1.default(common_1.Classes.SPINNER, common_1.Classes.intentClass(intent), (_a = {}, _a[common_1.Classes.SPINNER_NO_SPIN] = value != null, _a), className); // keep spinner track width consistent at all sizes (down to about 10px). var strokeWidth = Math.min(MIN_STROKE_WIDTH, (STROKE_WIDTH * Spinner_1.SIZE_LARGE) / size); var strokeOffset = PATH_LENGTH - PATH_LENGTH * (value == null ? 0.25 : utils_1.clamp(value, 0, 1)); // multiple DOM elements around SVG are necessary to properly isolate animation: // - SVG elements in IE do not support anim/trans so they must be set on a parent HTML element. // - SPINNER_ANIMATION isolates svg from parent display and is always centered inside root element. return React.createElement(tagName, { className: classes }, React.createElement(tagName, { className: common_1.Classes.SPINNER_ANIMATION }, React.createElement("svg", { width: size, height: size, strokeWidth: strokeWidth.toFixed(2), viewBox: this.getViewBox(strokeWidth) }, React.createElement("path", { className: common_1.Classes.SPINNER_TRACK, d: SPINNER_TRACK }), React.createElement("path", { className: common_1.Classes.SPINNER_HEAD, d: SPINNER_TRACK, pathLength: PATH_LENGTH, strokeDasharray: PATH_LENGTH + " " + PATH_LENGTH, strokeDashoffset: strokeOffset })))); }; Spinner.prototype.validateProps = function (_a) { var _b = _a.className, className = _b === void 0 ? "" : _b, size = _a.size; if (size != null && (className.indexOf(common_1.Classes.SMALL) >= 0 || className.indexOf(common_1.Classes.LARGE) >= 0)) { console.warn(errors_1.SPINNER_WARN_CLASSES_SIZE); } }; /** * Resolve size to a pixel value. * Size can be set by className, props, default, or minimum constant. */ Spinner.prototype.getSize = function () { var _a = this.props, _b = _a.className, className = _b === void 0 ? "" : _b, size = _a.size; if (size == null) { // allow Classes constants to determine default size. if (className.indexOf(common_1.Classes.SMALL) >= 0) { return Spinner_1.SIZE_SMALL; } else if (className.indexOf(common_1.Classes.LARGE) >= 0) { return Spinner_1.SIZE_LARGE; } return Spinner_1.SIZE_STANDARD; } return Math.max(MIN_SIZE, size); }; /** Compute viewbox such that stroked track sits exactly at edge of image frame. */ Spinner.prototype.getViewBox = function (strokeWidth) { var radius = R + strokeWidth / 2; var viewBoxX = (50 - radius).toFixed(2); var viewBoxWidth = (radius * 2).toFixed(2); return viewBoxX + " " + viewBoxX + " " + viewBoxWidth + " " + viewBoxWidth; }; var Spinner_1; Spinner.displayName = props_1.DISPLAYNAME_PREFIX + ".Spinner"; Spinner.SIZE_SMALL = 20; Spinner.SIZE_STANDARD = 50; Spinner.SIZE_LARGE = 100; Spinner = Spinner_1 = tslib_1.__decorate([ react_lifecycles_compat_1.polyfill ], Spinner); return Spinner; }(common_1.AbstractPureComponent2)); exports.Spinner = Spinner; //# sourceMappingURL=spinner.js.map