1786 lines
48 KiB
JavaScript
1786 lines
48 KiB
JavaScript
(function webpackUniversalModuleDefinition(root, factory) {
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if(typeof exports === 'object' && typeof module === 'object')
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module.exports = factory(require("echarts"));
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else if(typeof define === 'function' && define.amd)
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define(["echarts"], factory);
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else if(typeof exports === 'object')
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exports["echarts-wordcloud"] = factory(require("echarts"));
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else
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root["echarts-wordcloud"] = factory(root["echarts"]);
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})(self, function(__WEBPACK_EXTERNAL_MODULE_echarts_lib_echarts__) {
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return /******/ (() => { // webpackBootstrap
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/******/ "use strict";
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/******/ var __webpack_modules__ = ({
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/***/ "./index.js":
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/*!******************************!*\
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!*** ./index.js + 4 modules ***!
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\******************************/
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/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
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// ESM COMPAT FLAG
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__webpack_require__.r(__webpack_exports__);
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// EXTERNAL MODULE: external "echarts"
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var external_echarts_ = __webpack_require__("echarts/lib/echarts");
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;// CONCATENATED MODULE: ./src/WordCloudSeries.js
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external_echarts_.extendSeriesModel({
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type: 'series.wordCloud',
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visualStyleAccessPath: 'textStyle',
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visualStyleMapper: function (model) {
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return {
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fill: model.get('color')
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};
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},
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visualDrawType: 'fill',
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optionUpdated: function () {
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var option = this.option;
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option.gridSize = Math.max(Math.floor(option.gridSize), 4);
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},
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getInitialData: function (option, ecModel) {
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var dimensions = external_echarts_.helper.createDimensions(option.data, {
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coordDimensions: ['value']
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});
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var list = new external_echarts_.List(dimensions, this);
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list.initData(option.data);
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return list;
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},
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// Most of options are from https://github.com/timdream/wordcloud2.js/blob/gh-pages/API.md
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defaultOption: {
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maskImage: null,
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// Shape can be 'circle', 'cardioid', 'diamond', 'triangle-forward', 'triangle', 'pentagon', 'star'
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shape: 'circle',
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keepAspect: false,
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left: 'center',
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top: 'center',
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width: '70%',
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height: '80%',
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sizeRange: [12, 60],
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rotationRange: [-90, 90],
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rotationStep: 45,
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gridSize: 8,
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drawOutOfBound: false,
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shrinkToFit: false,
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textStyle: {
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fontWeight: 'normal'
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}
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}
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});
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;// CONCATENATED MODULE: ./src/WordCloudView.js
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external_echarts_.extendChartView({
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type: 'wordCloud',
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render: function (seriesModel, ecModel, api) {
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var group = this.group;
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group.removeAll();
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var data = seriesModel.getData();
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var gridSize = seriesModel.get('gridSize');
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seriesModel.layoutInstance.ondraw = function (text, size, dataIdx, drawn) {
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var itemModel = data.getItemModel(dataIdx);
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var textStyleModel = itemModel.getModel('textStyle');
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var textEl = new external_echarts_.graphic.Text({
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style: external_echarts_.helper.createTextStyle(textStyleModel),
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scaleX: 1 / drawn.info.mu,
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scaleY: 1 / drawn.info.mu,
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x: (drawn.gx + drawn.info.gw / 2) * gridSize,
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y: (drawn.gy + drawn.info.gh / 2) * gridSize,
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rotation: drawn.rot
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});
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textEl.setStyle({
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x: drawn.info.fillTextOffsetX,
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y: drawn.info.fillTextOffsetY + size * 0.5,
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text: text,
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verticalAlign: 'middle',
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fill: data.getItemVisual(dataIdx, 'style').fill,
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fontSize: size
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});
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group.add(textEl);
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data.setItemGraphicEl(dataIdx, textEl);
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textEl.ensureState('emphasis').style = external_echarts_.helper.createTextStyle(
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itemModel.getModel(['emphasis', 'textStyle']),
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{
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state: 'emphasis'
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}
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);
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textEl.ensureState('blur').style = external_echarts_.helper.createTextStyle(
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itemModel.getModel(['blur', 'textStyle']),
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{
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state: 'blur'
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}
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);
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external_echarts_.helper.enableHoverEmphasis(
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textEl,
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itemModel.get(['emphasis', 'focus']),
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itemModel.get(['emphasis', 'blurScope'])
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);
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textEl.stateTransition = {
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duration: seriesModel.get('animation')
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? seriesModel.get(['stateAnimation', 'duration'])
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: 0,
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easing: seriesModel.get(['stateAnimation', 'easing'])
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};
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// TODO
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textEl.__highDownDispatcher = true;
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};
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this._model = seriesModel;
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},
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remove: function () {
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this.group.removeAll();
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this._model.layoutInstance.dispose();
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},
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dispose: function () {
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this._model.layoutInstance.dispose();
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}
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});
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;// CONCATENATED MODULE: ./src/layout.js
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/*!
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* wordcloud2.js
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* http://timdream.org/wordcloud2.js/
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*
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* Copyright 2011 - 2019 Tim Guan-tin Chien and contributors.
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* Released under the MIT license
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*/
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// setImmediate
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if (!window.setImmediate) {
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window.setImmediate = (function setupSetImmediate() {
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return (
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window.msSetImmediate ||
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window.webkitSetImmediate ||
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window.mozSetImmediate ||
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window.oSetImmediate ||
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(function setupSetZeroTimeout() {
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if (!window.postMessage || !window.addEventListener) {
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return null;
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}
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var callbacks = [undefined];
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var message = 'zero-timeout-message';
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// Like setTimeout, but only takes a function argument. There's
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// no time argument (always zero) and no arguments (you have to
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// use a closure).
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var setZeroTimeout = function setZeroTimeout(callback) {
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var id = callbacks.length;
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callbacks.push(callback);
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window.postMessage(message + id.toString(36), '*');
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return id;
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};
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window.addEventListener(
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'message',
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function setZeroTimeoutMessage(evt) {
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// Skipping checking event source, retarded IE confused this window
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// object with another in the presence of iframe
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if (
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typeof evt.data !== 'string' ||
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evt.data.substr(0, message.length) !== message /* ||
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evt.source !== window */
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) {
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return;
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}
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evt.stopImmediatePropagation();
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var id = parseInt(evt.data.substr(message.length), 36);
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if (!callbacks[id]) {
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return;
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}
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callbacks[id]();
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callbacks[id] = undefined;
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},
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true
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);
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/* specify clearImmediate() here since we need the scope */
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window.clearImmediate = function clearZeroTimeout(id) {
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if (!callbacks[id]) {
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return;
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}
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callbacks[id] = undefined;
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};
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return setZeroTimeout;
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})() ||
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// fallback
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function setImmediateFallback(fn) {
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window.setTimeout(fn, 0);
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}
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);
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})();
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}
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if (!window.clearImmediate) {
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window.clearImmediate = (function setupClearImmediate() {
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return (
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window.msClearImmediate ||
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window.webkitClearImmediate ||
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window.mozClearImmediate ||
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window.oClearImmediate ||
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// "clearZeroTimeout" is implement on the previous block ||
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// fallback
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function clearImmediateFallback(timer) {
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window.clearTimeout(timer);
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}
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);
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})();
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}
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// Check if WordCloud can run on this browser
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var isSupported = (function isSupported() {
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var canvas = document.createElement('canvas');
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if (!canvas || !canvas.getContext) {
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return false;
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}
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var ctx = canvas.getContext('2d');
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if (!ctx) {
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return false;
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}
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if (!ctx.getImageData) {
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return false;
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}
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if (!ctx.fillText) {
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return false;
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}
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if (!Array.prototype.some) {
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return false;
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}
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if (!Array.prototype.push) {
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return false;
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}
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return true;
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})();
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// Find out if the browser impose minium font size by
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// drawing small texts on a canvas and measure it's width.
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var minFontSize = (function getMinFontSize() {
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if (!isSupported) {
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return;
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}
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var ctx = document.createElement('canvas').getContext('2d');
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// start from 20
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var size = 20;
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// two sizes to measure
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var hanWidth, mWidth;
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while (size) {
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ctx.font = size.toString(10) + 'px sans-serif';
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if (
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ctx.measureText('\uFF37').width === hanWidth &&
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ctx.measureText('m').width === mWidth
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) {
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return size + 1;
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}
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hanWidth = ctx.measureText('\uFF37').width;
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mWidth = ctx.measureText('m').width;
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size--;
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}
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return 0;
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})();
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var getItemExtraData = function (item) {
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if (Array.isArray(item)) {
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var itemCopy = item.slice();
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// remove data we already have (word and weight)
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itemCopy.splice(0, 2);
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return itemCopy;
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} else {
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return [];
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}
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};
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// Based on http://jsfromhell.com/array/shuffle
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var shuffleArray = function shuffleArray(arr) {
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for (var j, x, i = arr.length; i; ) {
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j = Math.floor(Math.random() * i);
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x = arr[--i];
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arr[i] = arr[j];
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arr[j] = x;
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}
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return arr;
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};
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var timer = {};
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var WordCloud = function WordCloud(elements, options) {
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if (!isSupported) {
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return;
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}
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var timerId = Math.floor(Math.random() * Date.now());
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if (!Array.isArray(elements)) {
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elements = [elements];
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}
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elements.forEach(function (el, i) {
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if (typeof el === 'string') {
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elements[i] = document.getElementById(el);
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if (!elements[i]) {
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throw new Error('The element id specified is not found.');
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}
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} else if (!el.tagName && !el.appendChild) {
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throw new Error(
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'You must pass valid HTML elements, or ID of the element.'
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);
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}
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});
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/* Default values to be overwritten by options object */
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var settings = {
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list: [],
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fontFamily:
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'"Trebuchet MS", "Heiti TC", "微軟正黑體", ' +
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'"Arial Unicode MS", "Droid Fallback Sans", sans-serif',
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fontWeight: 'normal',
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color: 'random-dark',
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minSize: 0, // 0 to disable
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weightFactor: 1,
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clearCanvas: true,
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backgroundColor: '#fff', // opaque white = rgba(255, 255, 255, 1)
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gridSize: 8,
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drawOutOfBound: false,
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shrinkToFit: false,
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origin: null,
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drawMask: false,
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maskColor: 'rgba(255,0,0,0.3)',
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maskGapWidth: 0.3,
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layoutAnimation: true,
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wait: 0,
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abortThreshold: 0, // disabled
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abort: function noop() {},
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minRotation: -Math.PI / 2,
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maxRotation: Math.PI / 2,
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rotationStep: 0.1,
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shuffle: true,
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rotateRatio: 0.1,
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shape: 'circle',
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ellipticity: 0.65,
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classes: null,
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hover: null,
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click: null
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};
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if (options) {
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for (var key in options) {
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if (key in settings) {
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settings[key] = options[key];
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}
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}
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}
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/* Convert weightFactor into a function */
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if (typeof settings.weightFactor !== 'function') {
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var factor = settings.weightFactor;
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settings.weightFactor = function weightFactor(pt) {
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return pt * factor; // in px
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};
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}
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/* Convert shape into a function */
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if (typeof settings.shape !== 'function') {
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switch (settings.shape) {
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case 'circle':
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/* falls through */
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default:
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// 'circle' is the default and a shortcut in the code loop.
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settings.shape = 'circle';
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break;
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case 'cardioid':
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settings.shape = function shapeCardioid(theta) {
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return 1 - Math.sin(theta);
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};
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break;
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/*
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To work out an X-gon, one has to calculate "m",
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where 1/(cos(2*PI/X)+m*sin(2*PI/X)) = 1/(cos(0)+m*sin(0))
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http://www.wolframalpha.com/input/?i=1%2F%28cos%282*PI%2FX%29%2Bm*sin%28
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2*PI%2FX%29%29+%3D+1%2F%28cos%280%29%2Bm*sin%280%29%29
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Copy the solution into polar equation r = 1/(cos(t') + m*sin(t'))
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where t' equals to mod(t, 2PI/X);
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*/
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case 'diamond':
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// http://www.wolframalpha.com/input/?i=plot+r+%3D+1%2F%28cos%28mod+
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// %28t%2C+PI%2F2%29%29%2Bsin%28mod+%28t%2C+PI%2F2%29%29%29%2C+t+%3D
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// +0+..+2*PI
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settings.shape = function shapeSquare(theta) {
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var thetaPrime = theta % ((2 * Math.PI) / 4);
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return 1 / (Math.cos(thetaPrime) + Math.sin(thetaPrime));
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};
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break;
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case 'square':
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// http://www.wolframalpha.com/input/?i=plot+r+%3D+min(1%2Fabs(cos(t
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// )),1%2Fabs(sin(t)))),+t+%3D+0+..+2*PI
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settings.shape = function shapeSquare(theta) {
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return Math.min(
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1 / Math.abs(Math.cos(theta)),
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1 / Math.abs(Math.sin(theta))
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);
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};
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break;
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|
case 'triangle-forward':
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// http://www.wolframalpha.com/input/?i=plot+r+%3D+1%2F%28cos%28mod+
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// %28t%2C+2*PI%2F3%29%29%2Bsqrt%283%29sin%28mod+%28t%2C+2*PI%2F3%29
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// %29%29%2C+t+%3D+0+..+2*PI
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settings.shape = function shapeTriangle(theta) {
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var thetaPrime = theta % ((2 * Math.PI) / 3);
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|
return (
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1 / (Math.cos(thetaPrime) + Math.sqrt(3) * Math.sin(thetaPrime))
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);
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|
};
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|
break;
|
|
|
|
case 'triangle':
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|
case 'triangle-upright':
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|
settings.shape = function shapeTriangle(theta) {
|
|
var thetaPrime = (theta + (Math.PI * 3) / 2) % ((2 * Math.PI) / 3);
|
|
return (
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1 / (Math.cos(thetaPrime) + Math.sqrt(3) * Math.sin(thetaPrime))
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|
);
|
|
};
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|
break;
|
|
|
|
case 'pentagon':
|
|
settings.shape = function shapePentagon(theta) {
|
|
var thetaPrime = (theta + 0.955) % ((2 * Math.PI) / 5);
|
|
return 1 / (Math.cos(thetaPrime) + 0.726543 * Math.sin(thetaPrime));
|
|
};
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|
break;
|
|
|
|
case 'star':
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|
settings.shape = function shapeStar(theta) {
|
|
var thetaPrime = (theta + 0.955) % ((2 * Math.PI) / 10);
|
|
if (
|
|
((theta + 0.955) % ((2 * Math.PI) / 5)) - (2 * Math.PI) / 10 >=
|
|
0
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|
) {
|
|
return (
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|
1 /
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|
(Math.cos((2 * Math.PI) / 10 - thetaPrime) +
|
|
3.07768 * Math.sin((2 * Math.PI) / 10 - thetaPrime))
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|
);
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|
} else {
|
|
return 1 / (Math.cos(thetaPrime) + 3.07768 * Math.sin(thetaPrime));
|
|
}
|
|
};
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Make sure gridSize is a whole number and is not smaller than 4px */
|
|
settings.gridSize = Math.max(Math.floor(settings.gridSize), 4);
|
|
|
|
/* shorthand */
|
|
var g = settings.gridSize;
|
|
var maskRectWidth = g - settings.maskGapWidth;
|
|
|
|
/* normalize rotation settings */
|
|
var rotationRange = Math.abs(settings.maxRotation - settings.minRotation);
|
|
var minRotation = Math.min(settings.maxRotation, settings.minRotation);
|
|
var rotationStep = settings.rotationStep;
|
|
|
|
/* information/object available to all functions, set when start() */
|
|
var grid, // 2d array containing filling information
|
|
ngx,
|
|
ngy, // width and height of the grid
|
|
center, // position of the center of the cloud
|
|
maxRadius;
|
|
|
|
/* timestamp for measuring each putWord() action */
|
|
var escapeTime;
|
|
|
|
/* function for getting the color of the text */
|
|
var getTextColor;
|
|
function randomHslColor(min, max) {
|
|
return (
|
|
'hsl(' +
|
|
(Math.random() * 360).toFixed() +
|
|
',' +
|
|
(Math.random() * 30 + 70).toFixed() +
|
|
'%,' +
|
|
(Math.random() * (max - min) + min).toFixed() +
|
|
'%)'
|
|
);
|
|
}
|
|
switch (settings.color) {
|
|
case 'random-dark':
|
|
getTextColor = function getRandomDarkColor() {
|
|
return randomHslColor(10, 50);
|
|
};
|
|
break;
|
|
|
|
case 'random-light':
|
|
getTextColor = function getRandomLightColor() {
|
|
return randomHslColor(50, 90);
|
|
};
|
|
break;
|
|
|
|
default:
|
|
if (typeof settings.color === 'function') {
|
|
getTextColor = settings.color;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* function for getting the font-weight of the text */
|
|
var getTextFontWeight;
|
|
if (typeof settings.fontWeight === 'function') {
|
|
getTextFontWeight = settings.fontWeight;
|
|
}
|
|
|
|
/* function for getting the classes of the text */
|
|
var getTextClasses = null;
|
|
if (typeof settings.classes === 'function') {
|
|
getTextClasses = settings.classes;
|
|
}
|
|
|
|
/* Interactive */
|
|
var interactive = false;
|
|
var infoGrid = [];
|
|
var hovered;
|
|
|
|
var getInfoGridFromMouseTouchEvent = function getInfoGridFromMouseTouchEvent(
|
|
evt
|
|
) {
|
|
var canvas = evt.currentTarget;
|
|
var rect = canvas.getBoundingClientRect();
|
|
var clientX;
|
|
var clientY;
|
|
/** Detect if touches are available */
|
|
if (evt.touches) {
|
|
clientX = evt.touches[0].clientX;
|
|
clientY = evt.touches[0].clientY;
|
|
} else {
|
|
clientX = evt.clientX;
|
|
clientY = evt.clientY;
|
|
}
|
|
var eventX = clientX - rect.left;
|
|
var eventY = clientY - rect.top;
|
|
|
|
var x = Math.floor((eventX * (canvas.width / rect.width || 1)) / g);
|
|
var y = Math.floor((eventY * (canvas.height / rect.height || 1)) / g);
|
|
|
|
if (!infoGrid[x]) {
|
|
return null
|
|
}
|
|
|
|
return infoGrid[x][y];
|
|
};
|
|
|
|
var wordcloudhover = function wordcloudhover(evt) {
|
|
var info = getInfoGridFromMouseTouchEvent(evt);
|
|
|
|
if (hovered === info) {
|
|
return;
|
|
}
|
|
|
|
hovered = info;
|
|
if (!info) {
|
|
settings.hover(undefined, undefined, evt);
|
|
|
|
return;
|
|
}
|
|
|
|
settings.hover(info.item, info.dimension, evt);
|
|
};
|
|
|
|
var wordcloudclick = function wordcloudclick(evt) {
|
|
var info = getInfoGridFromMouseTouchEvent(evt);
|
|
if (!info) {
|
|
return;
|
|
}
|
|
|
|
settings.click(info.item, info.dimension, evt);
|
|
evt.preventDefault();
|
|
};
|
|
|
|
/* Get points on the grid for a given radius away from the center */
|
|
var pointsAtRadius = [];
|
|
var getPointsAtRadius = function getPointsAtRadius(radius) {
|
|
if (pointsAtRadius[radius]) {
|
|
return pointsAtRadius[radius];
|
|
}
|
|
|
|
// Look for these number of points on each radius
|
|
var T = radius * 8;
|
|
|
|
// Getting all the points at this radius
|
|
var t = T;
|
|
var points = [];
|
|
|
|
if (radius === 0) {
|
|
points.push([center[0], center[1], 0]);
|
|
}
|
|
|
|
while (t--) {
|
|
// distort the radius to put the cloud in shape
|
|
var rx = 1;
|
|
if (settings.shape !== 'circle') {
|
|
rx = settings.shape((t / T) * 2 * Math.PI); // 0 to 1
|
|
}
|
|
|
|
// Push [x, y, t]; t is used solely for getTextColor()
|
|
points.push([
|
|
center[0] + radius * rx * Math.cos((-t / T) * 2 * Math.PI),
|
|
center[1] +
|
|
radius * rx * Math.sin((-t / T) * 2 * Math.PI) * settings.ellipticity,
|
|
(t / T) * 2 * Math.PI
|
|
]);
|
|
}
|
|
|
|
pointsAtRadius[radius] = points;
|
|
return points;
|
|
};
|
|
|
|
/* Return true if we had spent too much time */
|
|
var exceedTime = function exceedTime() {
|
|
return (
|
|
settings.abortThreshold > 0 &&
|
|
new Date().getTime() - escapeTime > settings.abortThreshold
|
|
);
|
|
};
|
|
|
|
/* Get the deg of rotation according to settings, and luck. */
|
|
var getRotateDeg = function getRotateDeg() {
|
|
if (settings.rotateRatio === 0) {
|
|
return 0;
|
|
}
|
|
|
|
if (Math.random() > settings.rotateRatio) {
|
|
return 0;
|
|
}
|
|
|
|
if (rotationRange === 0) {
|
|
return minRotation;
|
|
}
|
|
|
|
return minRotation + Math.round(Math.random() * rotationRange / rotationStep) * rotationStep;
|
|
};
|
|
|
|
var getTextInfo = function getTextInfo(
|
|
word,
|
|
weight,
|
|
rotateDeg,
|
|
extraDataArray
|
|
) {
|
|
// calculate the acutal font size
|
|
// fontSize === 0 means weightFactor function wants the text skipped,
|
|
// and size < minSize means we cannot draw the text.
|
|
var debug = false;
|
|
var fontSize = settings.weightFactor(weight);
|
|
if (fontSize <= settings.minSize) {
|
|
return false;
|
|
}
|
|
|
|
// Scale factor here is to make sure fillText is not limited by
|
|
// the minium font size set by browser.
|
|
// It will always be 1 or 2n.
|
|
var mu = 1;
|
|
if (fontSize < minFontSize) {
|
|
mu = (function calculateScaleFactor() {
|
|
var mu = 2;
|
|
while (mu * fontSize < minFontSize) {
|
|
mu += 2;
|
|
}
|
|
return mu;
|
|
})();
|
|
}
|
|
|
|
// Get fontWeight that will be used to set fctx.font
|
|
var fontWeight;
|
|
if (getTextFontWeight) {
|
|
fontWeight = getTextFontWeight(word, weight, fontSize, extraDataArray);
|
|
} else {
|
|
fontWeight = settings.fontWeight;
|
|
}
|
|
|
|
var fcanvas = document.createElement('canvas');
|
|
var fctx = fcanvas.getContext('2d', { willReadFrequently: true });
|
|
|
|
fctx.font =
|
|
fontWeight +
|
|
' ' +
|
|
(fontSize * mu).toString(10) +
|
|
'px ' +
|
|
settings.fontFamily;
|
|
|
|
// Estimate the dimension of the text with measureText().
|
|
var fw = fctx.measureText(word).width / mu;
|
|
var fh =
|
|
Math.max(
|
|
fontSize * mu,
|
|
fctx.measureText('m').width,
|
|
fctx.measureText('\uFF37').width
|
|
) / mu;
|
|
|
|
// Create a boundary box that is larger than our estimates,
|
|
// so text don't get cut of (it sill might)
|
|
var boxWidth = fw + fh * 2;
|
|
var boxHeight = fh * 3;
|
|
var fgw = Math.ceil(boxWidth / g);
|
|
var fgh = Math.ceil(boxHeight / g);
|
|
boxWidth = fgw * g;
|
|
boxHeight = fgh * g;
|
|
|
|
// Calculate the proper offsets to make the text centered at
|
|
// the preferred position.
|
|
|
|
// This is simply half of the width.
|
|
var fillTextOffsetX = -fw / 2;
|
|
// Instead of moving the box to the exact middle of the preferred
|
|
// position, for Y-offset we move 0.4 instead, so Latin alphabets look
|
|
// vertical centered.
|
|
var fillTextOffsetY = -fh * 0.4;
|
|
|
|
// Calculate the actual dimension of the canvas, considering the rotation.
|
|
var cgh = Math.ceil(
|
|
(boxWidth * Math.abs(Math.sin(rotateDeg)) +
|
|
boxHeight * Math.abs(Math.cos(rotateDeg))) /
|
|
g
|
|
);
|
|
var cgw = Math.ceil(
|
|
(boxWidth * Math.abs(Math.cos(rotateDeg)) +
|
|
boxHeight * Math.abs(Math.sin(rotateDeg))) /
|
|
g
|
|
);
|
|
var width = cgw * g;
|
|
var height = cgh * g;
|
|
|
|
fcanvas.setAttribute('width', width);
|
|
fcanvas.setAttribute('height', height);
|
|
|
|
if (debug) {
|
|
// Attach fcanvas to the DOM
|
|
document.body.appendChild(fcanvas);
|
|
// Save it's state so that we could restore and draw the grid correctly.
|
|
fctx.save();
|
|
}
|
|
|
|
// Scale the canvas with |mu|.
|
|
fctx.scale(1 / mu, 1 / mu);
|
|
fctx.translate((width * mu) / 2, (height * mu) / 2);
|
|
fctx.rotate(-rotateDeg);
|
|
|
|
// Once the width/height is set, ctx info will be reset.
|
|
// Set it again here.
|
|
fctx.font =
|
|
fontWeight +
|
|
' ' +
|
|
(fontSize * mu).toString(10) +
|
|
'px ' +
|
|
settings.fontFamily;
|
|
|
|
// Fill the text into the fcanvas.
|
|
// XXX: We cannot because textBaseline = 'top' here because
|
|
// Firefox and Chrome uses different default line-height for canvas.
|
|
// Please read https://bugzil.la/737852#c6.
|
|
// Here, we use textBaseline = 'middle' and draw the text at exactly
|
|
// 0.5 * fontSize lower.
|
|
fctx.fillStyle = '#000';
|
|
fctx.textBaseline = 'middle';
|
|
fctx.fillText(
|
|
word,
|
|
fillTextOffsetX * mu,
|
|
(fillTextOffsetY + fontSize * 0.5) * mu
|
|
);
|
|
|
|
// Get the pixels of the text
|
|
var imageData = fctx.getImageData(0, 0, width, height).data;
|
|
|
|
if (exceedTime()) {
|
|
return false;
|
|
}
|
|
|
|
if (debug) {
|
|
// Draw the box of the original estimation
|
|
fctx.strokeRect(fillTextOffsetX * mu, fillTextOffsetY, fw * mu, fh * mu);
|
|
fctx.restore();
|
|
}
|
|
|
|
// Read the pixels and save the information to the occupied array
|
|
var occupied = [];
|
|
var gx = cgw;
|
|
var gy, x, y;
|
|
var bounds = [cgh / 2, cgw / 2, cgh / 2, cgw / 2];
|
|
while (gx--) {
|
|
gy = cgh;
|
|
while (gy--) {
|
|
y = g;
|
|
/* eslint no-labels: ['error', { 'allowLoop': true }] */
|
|
singleGridLoop: while (y--) {
|
|
x = g;
|
|
while (x--) {
|
|
if (imageData[((gy * g + y) * width + (gx * g + x)) * 4 + 3]) {
|
|
occupied.push([gx, gy]);
|
|
|
|
if (gx < bounds[3]) {
|
|
bounds[3] = gx;
|
|
}
|
|
if (gx > bounds[1]) {
|
|
bounds[1] = gx;
|
|
}
|
|
if (gy < bounds[0]) {
|
|
bounds[0] = gy;
|
|
}
|
|
if (gy > bounds[2]) {
|
|
bounds[2] = gy;
|
|
}
|
|
|
|
if (debug) {
|
|
fctx.fillStyle = 'rgba(255, 0, 0, 0.5)';
|
|
fctx.fillRect(gx * g, gy * g, g - 0.5, g - 0.5);
|
|
}
|
|
break singleGridLoop;
|
|
}
|
|
}
|
|
}
|
|
if (debug) {
|
|
fctx.fillStyle = 'rgba(0, 0, 255, 0.5)';
|
|
fctx.fillRect(gx * g, gy * g, g - 0.5, g - 0.5);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (debug) {
|
|
fctx.fillStyle = 'rgba(0, 255, 0, 0.5)';
|
|
fctx.fillRect(
|
|
bounds[3] * g,
|
|
bounds[0] * g,
|
|
(bounds[1] - bounds[3] + 1) * g,
|
|
(bounds[2] - bounds[0] + 1) * g
|
|
);
|
|
}
|
|
|
|
// Return information needed to create the text on the real canvas
|
|
return {
|
|
mu: mu,
|
|
occupied: occupied,
|
|
bounds: bounds,
|
|
gw: cgw,
|
|
gh: cgh,
|
|
fillTextOffsetX: fillTextOffsetX,
|
|
fillTextOffsetY: fillTextOffsetY,
|
|
fillTextWidth: fw,
|
|
fillTextHeight: fh,
|
|
fontSize: fontSize
|
|
};
|
|
};
|
|
|
|
/* Determine if there is room available in the given dimension */
|
|
var canFitText = function canFitText(gx, gy, gw, gh, occupied) {
|
|
// Go through the occupied points,
|
|
// return false if the space is not available.
|
|
var i = occupied.length;
|
|
while (i--) {
|
|
var px = gx + occupied[i][0];
|
|
var py = gy + occupied[i][1];
|
|
|
|
if (px >= ngx || py >= ngy || px < 0 || py < 0) {
|
|
if (!settings.drawOutOfBound) {
|
|
return false;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (!grid[px][py]) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
};
|
|
|
|
/* Actually draw the text on the grid */
|
|
var drawText = function drawText(
|
|
gx,
|
|
gy,
|
|
info,
|
|
word,
|
|
weight,
|
|
distance,
|
|
theta,
|
|
rotateDeg,
|
|
attributes,
|
|
extraDataArray
|
|
) {
|
|
var fontSize = info.fontSize;
|
|
var color;
|
|
if (getTextColor) {
|
|
color = getTextColor(
|
|
word,
|
|
weight,
|
|
fontSize,
|
|
distance,
|
|
theta,
|
|
extraDataArray
|
|
);
|
|
} else {
|
|
color = settings.color;
|
|
}
|
|
|
|
// get fontWeight that will be used to set ctx.font and font style rule
|
|
var fontWeight;
|
|
if (getTextFontWeight) {
|
|
fontWeight = getTextFontWeight(word, weight, fontSize, extraDataArray);
|
|
} else {
|
|
fontWeight = settings.fontWeight;
|
|
}
|
|
|
|
var classes;
|
|
if (getTextClasses) {
|
|
classes = getTextClasses(word, weight, fontSize, extraDataArray);
|
|
} else {
|
|
classes = settings.classes;
|
|
}
|
|
|
|
elements.forEach(function (el) {
|
|
if (el.getContext) {
|
|
var ctx = el.getContext('2d');
|
|
var mu = info.mu;
|
|
|
|
// Save the current state before messing it
|
|
ctx.save();
|
|
ctx.scale(1 / mu, 1 / mu);
|
|
|
|
ctx.font =
|
|
fontWeight +
|
|
' ' +
|
|
(fontSize * mu).toString(10) +
|
|
'px ' +
|
|
settings.fontFamily;
|
|
ctx.fillStyle = color;
|
|
|
|
// Translate the canvas position to the origin coordinate of where
|
|
// the text should be put.
|
|
ctx.translate((gx + info.gw / 2) * g * mu, (gy + info.gh / 2) * g * mu);
|
|
|
|
if (rotateDeg !== 0) {
|
|
ctx.rotate(-rotateDeg);
|
|
}
|
|
|
|
// Finally, fill the text.
|
|
|
|
// XXX: We cannot because textBaseline = 'top' here because
|
|
// Firefox and Chrome uses different default line-height for canvas.
|
|
// Please read https://bugzil.la/737852#c6.
|
|
// Here, we use textBaseline = 'middle' and draw the text at exactly
|
|
// 0.5 * fontSize lower.
|
|
ctx.textBaseline = 'middle';
|
|
ctx.fillText(
|
|
word,
|
|
info.fillTextOffsetX * mu,
|
|
(info.fillTextOffsetY + fontSize * 0.5) * mu
|
|
);
|
|
|
|
// The below box is always matches how <span>s are positioned
|
|
/* ctx.strokeRect(info.fillTextOffsetX, info.fillTextOffsetY,
|
|
info.fillTextWidth, info.fillTextHeight); */
|
|
|
|
// Restore the state.
|
|
ctx.restore();
|
|
} else {
|
|
// drawText on DIV element
|
|
var span = document.createElement('span');
|
|
var transformRule = '';
|
|
transformRule = 'rotate(' + (-rotateDeg / Math.PI) * 180 + 'deg) ';
|
|
if (info.mu !== 1) {
|
|
transformRule +=
|
|
'translateX(-' +
|
|
info.fillTextWidth / 4 +
|
|
'px) ' +
|
|
'scale(' +
|
|
1 / info.mu +
|
|
')';
|
|
}
|
|
var styleRules = {
|
|
position: 'absolute',
|
|
display: 'block',
|
|
font:
|
|
fontWeight + ' ' + fontSize * info.mu + 'px ' + settings.fontFamily,
|
|
left: (gx + info.gw / 2) * g + info.fillTextOffsetX + 'px',
|
|
top: (gy + info.gh / 2) * g + info.fillTextOffsetY + 'px',
|
|
width: info.fillTextWidth + 'px',
|
|
height: info.fillTextHeight + 'px',
|
|
lineHeight: fontSize + 'px',
|
|
whiteSpace: 'nowrap',
|
|
transform: transformRule,
|
|
webkitTransform: transformRule,
|
|
msTransform: transformRule,
|
|
transformOrigin: '50% 40%',
|
|
webkitTransformOrigin: '50% 40%',
|
|
msTransformOrigin: '50% 40%'
|
|
};
|
|
if (color) {
|
|
styleRules.color = color;
|
|
}
|
|
span.textContent = word;
|
|
for (var cssProp in styleRules) {
|
|
span.style[cssProp] = styleRules[cssProp];
|
|
}
|
|
if (attributes) {
|
|
for (var attribute in attributes) {
|
|
span.setAttribute(attribute, attributes[attribute]);
|
|
}
|
|
}
|
|
if (classes) {
|
|
span.className += classes;
|
|
}
|
|
el.appendChild(span);
|
|
}
|
|
});
|
|
};
|
|
|
|
/* Help function to updateGrid */
|
|
var fillGridAt = function fillGridAt(x, y, drawMask, dimension, item) {
|
|
if (x >= ngx || y >= ngy || x < 0 || y < 0) {
|
|
return;
|
|
}
|
|
|
|
grid[x][y] = false;
|
|
|
|
if (drawMask) {
|
|
var ctx = elements[0].getContext('2d');
|
|
ctx.fillRect(x * g, y * g, maskRectWidth, maskRectWidth);
|
|
}
|
|
|
|
if (interactive) {
|
|
infoGrid[x][y] = { item: item, dimension: dimension };
|
|
}
|
|
};
|
|
|
|
/* Update the filling information of the given space with occupied points.
|
|
Draw the mask on the canvas if necessary. */
|
|
var updateGrid = function updateGrid(gx, gy, gw, gh, info, item) {
|
|
var occupied = info.occupied;
|
|
var drawMask = settings.drawMask;
|
|
var ctx;
|
|
if (drawMask) {
|
|
ctx = elements[0].getContext('2d');
|
|
ctx.save();
|
|
ctx.fillStyle = settings.maskColor;
|
|
}
|
|
|
|
var dimension;
|
|
if (interactive) {
|
|
var bounds = info.bounds;
|
|
dimension = {
|
|
x: (gx + bounds[3]) * g,
|
|
y: (gy + bounds[0]) * g,
|
|
w: (bounds[1] - bounds[3] + 1) * g,
|
|
h: (bounds[2] - bounds[0] + 1) * g
|
|
};
|
|
}
|
|
|
|
var i = occupied.length;
|
|
while (i--) {
|
|
var px = gx + occupied[i][0];
|
|
var py = gy + occupied[i][1];
|
|
|
|
if (px >= ngx || py >= ngy || px < 0 || py < 0) {
|
|
continue;
|
|
}
|
|
|
|
fillGridAt(px, py, drawMask, dimension, item);
|
|
}
|
|
|
|
if (drawMask) {
|
|
ctx.restore();
|
|
}
|
|
};
|
|
|
|
/* putWord() processes each item on the list,
|
|
calculate it's size and determine it's position, and actually
|
|
put it on the canvas. */
|
|
var putWord = function putWord(item, loopIndex) {
|
|
if (loopIndex > 20) {
|
|
return null;
|
|
}
|
|
|
|
var word, weight, attributes;
|
|
if (Array.isArray(item)) {
|
|
word = item[0];
|
|
weight = item[1];
|
|
} else {
|
|
word = item.word;
|
|
weight = item.weight;
|
|
attributes = item.attributes;
|
|
}
|
|
var rotateDeg = getRotateDeg();
|
|
|
|
var extraDataArray = getItemExtraData(item);
|
|
|
|
// get info needed to put the text onto the canvas
|
|
var info = getTextInfo(word, weight, rotateDeg, extraDataArray);
|
|
|
|
// not getting the info means we shouldn't be drawing this one.
|
|
if (!info) {
|
|
return false;
|
|
}
|
|
|
|
if (exceedTime()) {
|
|
return false;
|
|
}
|
|
|
|
// If drawOutOfBound is set to false,
|
|
// skip the loop if we have already know the bounding box of
|
|
// word is larger than the canvas.
|
|
if (!settings.drawOutOfBound && !settings.shrinkToFit) {
|
|
var bounds = info.bounds;
|
|
if (bounds[1] - bounds[3] + 1 > ngx || bounds[2] - bounds[0] + 1 > ngy) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// Determine the position to put the text by
|
|
// start looking for the nearest points
|
|
var r = maxRadius + 1;
|
|
|
|
var tryToPutWordAtPoint = function (gxy) {
|
|
var gx = Math.floor(gxy[0] - info.gw / 2);
|
|
var gy = Math.floor(gxy[1] - info.gh / 2);
|
|
var gw = info.gw;
|
|
var gh = info.gh;
|
|
|
|
// If we cannot fit the text at this position, return false
|
|
// and go to the next position.
|
|
if (!canFitText(gx, gy, gw, gh, info.occupied)) {
|
|
return false;
|
|
}
|
|
|
|
// Actually put the text on the canvas
|
|
drawText(
|
|
gx,
|
|
gy,
|
|
info,
|
|
word,
|
|
weight,
|
|
maxRadius - r,
|
|
gxy[2],
|
|
rotateDeg,
|
|
attributes,
|
|
extraDataArray
|
|
);
|
|
|
|
// Mark the spaces on the grid as filled
|
|
updateGrid(gx, gy, gw, gh, info, item);
|
|
|
|
return {
|
|
gx: gx,
|
|
gy: gy,
|
|
rot: rotateDeg,
|
|
info: info
|
|
};
|
|
};
|
|
|
|
while (r--) {
|
|
var points = getPointsAtRadius(maxRadius - r);
|
|
|
|
if (settings.shuffle) {
|
|
points = [].concat(points);
|
|
shuffleArray(points);
|
|
}
|
|
|
|
// Try to fit the words by looking at each point.
|
|
// array.some() will stop and return true
|
|
// when putWordAtPoint() returns true.
|
|
for (var i = 0; i < points.length; i++) {
|
|
var res = tryToPutWordAtPoint(points[i]);
|
|
if (res) {
|
|
return res;
|
|
}
|
|
}
|
|
|
|
// var drawn = points.some(tryToPutWordAtPoint);
|
|
// if (drawn) {
|
|
// // leave putWord() and return true
|
|
// return true;
|
|
// }
|
|
}
|
|
|
|
if (settings.shrinkToFit) {
|
|
if (Array.isArray(item)) {
|
|
item[1] = (item[1] * 3) / 4;
|
|
} else {
|
|
item.weight = (item.weight * 3) / 4;
|
|
}
|
|
return putWord(item, loopIndex + 1);
|
|
}
|
|
|
|
// we tried all distances but text won't fit, return null
|
|
return null;
|
|
};
|
|
|
|
/* Send DOM event to all elements. Will stop sending event and return
|
|
if the previous one is canceled (for cancelable events). */
|
|
var sendEvent = function sendEvent(type, cancelable, details) {
|
|
if (cancelable) {
|
|
return !elements.some(function (el) {
|
|
var event = new CustomEvent(type, {
|
|
detail: details || {}
|
|
});
|
|
return !el.dispatchEvent(event);
|
|
}, this);
|
|
} else {
|
|
elements.forEach(function (el) {
|
|
var event = new CustomEvent(type, {
|
|
detail: details || {}
|
|
});
|
|
el.dispatchEvent(event);
|
|
}, this);
|
|
}
|
|
};
|
|
|
|
/* Start drawing on a canvas */
|
|
var start = function start() {
|
|
// For dimensions, clearCanvas etc.,
|
|
// we only care about the first element.
|
|
var canvas = elements[0];
|
|
|
|
if (canvas.getContext) {
|
|
ngx = Math.ceil(canvas.width / g);
|
|
ngy = Math.ceil(canvas.height / g);
|
|
} else {
|
|
var rect = canvas.getBoundingClientRect();
|
|
ngx = Math.ceil(rect.width / g);
|
|
ngy = Math.ceil(rect.height / g);
|
|
}
|
|
|
|
// Sending a wordcloudstart event which cause the previous loop to stop.
|
|
// Do nothing if the event is canceled.
|
|
if (!sendEvent('wordcloudstart', true)) {
|
|
return;
|
|
}
|
|
|
|
// Determine the center of the word cloud
|
|
center = settings.origin
|
|
? [settings.origin[0] / g, settings.origin[1] / g]
|
|
: [ngx / 2, ngy / 2];
|
|
|
|
// Maxium radius to look for space
|
|
maxRadius = Math.floor(Math.sqrt(ngx * ngx + ngy * ngy));
|
|
|
|
/* Clear the canvas only if the clearCanvas is set,
|
|
if not, update the grid to the current canvas state */
|
|
grid = [];
|
|
|
|
var gx, gy, i;
|
|
if (!canvas.getContext || settings.clearCanvas) {
|
|
elements.forEach(function (el) {
|
|
if (el.getContext) {
|
|
var ctx = el.getContext('2d');
|
|
ctx.fillStyle = settings.backgroundColor;
|
|
ctx.clearRect(0, 0, ngx * (g + 1), ngy * (g + 1));
|
|
ctx.fillRect(0, 0, ngx * (g + 1), ngy * (g + 1));
|
|
} else {
|
|
el.textContent = '';
|
|
el.style.backgroundColor = settings.backgroundColor;
|
|
el.style.position = 'relative';
|
|
}
|
|
});
|
|
|
|
/* fill the grid with empty state */
|
|
gx = ngx;
|
|
while (gx--) {
|
|
grid[gx] = [];
|
|
gy = ngy;
|
|
while (gy--) {
|
|
grid[gx][gy] = true;
|
|
}
|
|
}
|
|
} else {
|
|
/* Determine bgPixel by creating
|
|
another canvas and fill the specified background color. */
|
|
var bctx = document.createElement('canvas').getContext('2d');
|
|
|
|
bctx.fillStyle = settings.backgroundColor;
|
|
bctx.fillRect(0, 0, 1, 1);
|
|
var bgPixel = bctx.getImageData(0, 0, 1, 1).data;
|
|
|
|
/* Read back the pixels of the canvas we got to tell which part of the
|
|
canvas is empty.
|
|
(no clearCanvas only works with a canvas, not divs) */
|
|
var imageData = canvas
|
|
.getContext('2d')
|
|
.getImageData(0, 0, ngx * g, ngy * g).data;
|
|
|
|
gx = ngx;
|
|
var x, y;
|
|
while (gx--) {
|
|
grid[gx] = [];
|
|
gy = ngy;
|
|
while (gy--) {
|
|
y = g;
|
|
/* eslint no-labels: ['error', { 'allowLoop': true }] */
|
|
singleGridLoop: while (y--) {
|
|
x = g;
|
|
while (x--) {
|
|
i = 4;
|
|
while (i--) {
|
|
if (
|
|
imageData[((gy * g + y) * ngx * g + (gx * g + x)) * 4 + i] !==
|
|
bgPixel[i]
|
|
) {
|
|
grid[gx][gy] = false;
|
|
break singleGridLoop;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if (grid[gx][gy] !== false) {
|
|
grid[gx][gy] = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
imageData = bctx = bgPixel = undefined;
|
|
}
|
|
|
|
// fill the infoGrid with empty state if we need it
|
|
if (settings.hover || settings.click) {
|
|
interactive = true;
|
|
|
|
/* fill the grid with empty state */
|
|
gx = ngx + 1;
|
|
while (gx--) {
|
|
infoGrid[gx] = [];
|
|
}
|
|
|
|
if (settings.hover) {
|
|
canvas.addEventListener('mousemove', wordcloudhover);
|
|
}
|
|
|
|
if (settings.click) {
|
|
canvas.addEventListener('click', wordcloudclick);
|
|
canvas.addEventListener('touchstart', wordcloudclick);
|
|
canvas.addEventListener('touchend', function (e) {
|
|
e.preventDefault();
|
|
});
|
|
canvas.style.webkitTapHighlightColor = 'rgba(0, 0, 0, 0)';
|
|
}
|
|
|
|
canvas.addEventListener('wordcloudstart', function stopInteraction() {
|
|
canvas.removeEventListener('wordcloudstart', stopInteraction);
|
|
|
|
canvas.removeEventListener('mousemove', wordcloudhover);
|
|
canvas.removeEventListener('click', wordcloudclick);
|
|
hovered = undefined;
|
|
});
|
|
}
|
|
|
|
i = 0;
|
|
var loopingFunction, stoppingFunction;
|
|
var layouting = true;
|
|
if (!settings.layoutAnimation) {
|
|
loopingFunction = function (cb) {
|
|
cb();
|
|
};
|
|
stoppingFunction = function () {
|
|
layouting = false;
|
|
};
|
|
} else if (settings.wait !== 0) {
|
|
loopingFunction = window.setTimeout;
|
|
stoppingFunction = window.clearTimeout;
|
|
} else {
|
|
loopingFunction = window.setImmediate;
|
|
stoppingFunction = window.clearImmediate;
|
|
}
|
|
|
|
var addEventListener = function addEventListener(type, listener) {
|
|
elements.forEach(function (el) {
|
|
el.addEventListener(type, listener);
|
|
}, this);
|
|
};
|
|
|
|
var removeEventListener = function removeEventListener(type, listener) {
|
|
elements.forEach(function (el) {
|
|
el.removeEventListener(type, listener);
|
|
}, this);
|
|
};
|
|
|
|
var anotherWordCloudStart = function anotherWordCloudStart() {
|
|
removeEventListener('wordcloudstart', anotherWordCloudStart);
|
|
stoppingFunction(timer[timerId]);
|
|
};
|
|
|
|
addEventListener('wordcloudstart', anotherWordCloudStart);
|
|
|
|
// At least wait the following code before call the first iteration.
|
|
timer[timerId] = (settings.layoutAnimation ? loopingFunction : setTimeout)(
|
|
function loop() {
|
|
if (!layouting) {
|
|
return;
|
|
}
|
|
if (i >= settings.list.length) {
|
|
stoppingFunction(timer[timerId]);
|
|
sendEvent('wordcloudstop', false);
|
|
removeEventListener('wordcloudstart', anotherWordCloudStart);
|
|
delete timer[timerId];
|
|
return;
|
|
}
|
|
escapeTime = new Date().getTime();
|
|
var drawn = putWord(settings.list[i], 0);
|
|
var canceled = !sendEvent('wordclouddrawn', true, {
|
|
item: settings.list[i],
|
|
drawn: drawn
|
|
});
|
|
if (exceedTime() || canceled) {
|
|
stoppingFunction(timer[timerId]);
|
|
settings.abort();
|
|
sendEvent('wordcloudabort', false);
|
|
sendEvent('wordcloudstop', false);
|
|
removeEventListener('wordcloudstart', anotherWordCloudStart);
|
|
return;
|
|
}
|
|
i++;
|
|
timer[timerId] = loopingFunction(loop, settings.wait);
|
|
},
|
|
settings.wait
|
|
);
|
|
};
|
|
|
|
// All set, start the drawing
|
|
start();
|
|
};
|
|
|
|
WordCloud.isSupported = isSupported;
|
|
WordCloud.minFontSize = minFontSize;
|
|
|
|
/* harmony default export */ const layout = (WordCloud);
|
|
|
|
;// CONCATENATED MODULE: ./src/wordCloud.js
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
if (!layout.isSupported) {
|
|
throw new Error('Sorry your browser not support wordCloud');
|
|
}
|
|
|
|
// https://github.com/timdream/wordcloud2.js/blob/c236bee60436e048949f9becc4f0f67bd832dc5c/index.js#L233
|
|
function updateCanvasMask(maskCanvas) {
|
|
var ctx = maskCanvas.getContext('2d');
|
|
var imageData = ctx.getImageData(0, 0, maskCanvas.width, maskCanvas.height);
|
|
var newImageData = ctx.createImageData(imageData);
|
|
|
|
var toneSum = 0;
|
|
var toneCnt = 0;
|
|
for (var i = 0; i < imageData.data.length; i += 4) {
|
|
var alpha = imageData.data[i + 3];
|
|
if (alpha > 128) {
|
|
var tone =
|
|
imageData.data[i] + imageData.data[i + 1] + imageData.data[i + 2];
|
|
toneSum += tone;
|
|
++toneCnt;
|
|
}
|
|
}
|
|
var threshold = toneSum / toneCnt;
|
|
|
|
for (var i = 0; i < imageData.data.length; i += 4) {
|
|
var tone =
|
|
imageData.data[i] + imageData.data[i + 1] + imageData.data[i + 2];
|
|
var alpha = imageData.data[i + 3];
|
|
|
|
if (alpha < 128 || tone > threshold) {
|
|
// Area not to draw
|
|
newImageData.data[i] = 0;
|
|
newImageData.data[i + 1] = 0;
|
|
newImageData.data[i + 2] = 0;
|
|
newImageData.data[i + 3] = 0;
|
|
} else {
|
|
// Area to draw
|
|
// The color must be same with backgroundColor
|
|
newImageData.data[i] = 255;
|
|
newImageData.data[i + 1] = 255;
|
|
newImageData.data[i + 2] = 255;
|
|
newImageData.data[i + 3] = 255;
|
|
}
|
|
}
|
|
|
|
ctx.putImageData(newImageData, 0, 0);
|
|
}
|
|
|
|
external_echarts_.registerLayout(function (ecModel, api) {
|
|
ecModel.eachSeriesByType('wordCloud', function (seriesModel) {
|
|
var gridRect = external_echarts_.helper.getLayoutRect(
|
|
seriesModel.getBoxLayoutParams(),
|
|
{
|
|
width: api.getWidth(),
|
|
height: api.getHeight()
|
|
}
|
|
);
|
|
|
|
var keepAspect = seriesModel.get('keepAspect');
|
|
var maskImage = seriesModel.get('maskImage');
|
|
var ratio = maskImage ? maskImage.width / maskImage.height : 1;
|
|
keepAspect && adjustRectAspect(gridRect, ratio);
|
|
|
|
var data = seriesModel.getData();
|
|
|
|
var canvas = document.createElement('canvas');
|
|
canvas.width = gridRect.width;
|
|
canvas.height = gridRect.height;
|
|
|
|
var ctx = canvas.getContext('2d');
|
|
if (maskImage) {
|
|
try {
|
|
ctx.drawImage(maskImage, 0, 0, canvas.width, canvas.height);
|
|
updateCanvasMask(canvas);
|
|
} catch (e) {
|
|
console.error('Invalid mask image');
|
|
console.error(e.toString());
|
|
}
|
|
}
|
|
|
|
var sizeRange = seriesModel.get('sizeRange');
|
|
var rotationRange = seriesModel.get('rotationRange');
|
|
var valueExtent = data.getDataExtent('value');
|
|
|
|
var DEGREE_TO_RAD = Math.PI / 180;
|
|
var gridSize = seriesModel.get('gridSize');
|
|
layout(canvas, {
|
|
list: data
|
|
.mapArray('value', function (value, idx) {
|
|
var itemModel = data.getItemModel(idx);
|
|
return [
|
|
data.getName(idx),
|
|
itemModel.get('textStyle.fontSize', true) ||
|
|
external_echarts_.number.linearMap(value, valueExtent, sizeRange),
|
|
idx
|
|
];
|
|
})
|
|
.sort(function (a, b) {
|
|
// Sort from large to small in case there is no more room for more words
|
|
return b[1] - a[1];
|
|
}),
|
|
fontFamily:
|
|
seriesModel.get('textStyle.fontFamily') ||
|
|
seriesModel.get('emphasis.textStyle.fontFamily') ||
|
|
ecModel.get('textStyle.fontFamily'),
|
|
fontWeight:
|
|
seriesModel.get('textStyle.fontWeight') ||
|
|
seriesModel.get('emphasis.textStyle.fontWeight') ||
|
|
ecModel.get('textStyle.fontWeight'),
|
|
|
|
gridSize: gridSize,
|
|
|
|
ellipticity: gridRect.height / gridRect.width,
|
|
|
|
minRotation: rotationRange[0] * DEGREE_TO_RAD,
|
|
maxRotation: rotationRange[1] * DEGREE_TO_RAD,
|
|
|
|
clearCanvas: !maskImage,
|
|
|
|
rotateRatio: 1,
|
|
|
|
rotationStep: seriesModel.get('rotationStep') * DEGREE_TO_RAD,
|
|
|
|
drawOutOfBound: seriesModel.get('drawOutOfBound'),
|
|
shrinkToFit: seriesModel.get('shrinkToFit'),
|
|
|
|
layoutAnimation: seriesModel.get('layoutAnimation'),
|
|
|
|
shuffle: false,
|
|
|
|
shape: seriesModel.get('shape')
|
|
});
|
|
|
|
function onWordCloudDrawn(e) {
|
|
var item = e.detail.item;
|
|
if (e.detail.drawn && seriesModel.layoutInstance.ondraw) {
|
|
e.detail.drawn.gx += gridRect.x / gridSize;
|
|
e.detail.drawn.gy += gridRect.y / gridSize;
|
|
seriesModel.layoutInstance.ondraw(
|
|
item[0],
|
|
item[1],
|
|
item[2],
|
|
e.detail.drawn
|
|
);
|
|
}
|
|
}
|
|
|
|
canvas.addEventListener('wordclouddrawn', onWordCloudDrawn);
|
|
|
|
if (seriesModel.layoutInstance) {
|
|
// Dispose previous
|
|
seriesModel.layoutInstance.dispose();
|
|
}
|
|
|
|
seriesModel.layoutInstance = {
|
|
ondraw: null,
|
|
|
|
dispose: function () {
|
|
canvas.removeEventListener('wordclouddrawn', onWordCloudDrawn);
|
|
// Abort
|
|
canvas.addEventListener('wordclouddrawn', function (e) {
|
|
// Prevent default to cancle the event and stop the loop
|
|
e.preventDefault();
|
|
});
|
|
}
|
|
};
|
|
});
|
|
});
|
|
|
|
external_echarts_.registerPreprocessor(function (option) {
|
|
var series = (option || {}).series;
|
|
!external_echarts_.util.isArray(series) && (series = series ? [series] : []);
|
|
|
|
var compats = ['shadowColor', 'shadowBlur', 'shadowOffsetX', 'shadowOffsetY'];
|
|
|
|
external_echarts_.util.each(series, function (seriesItem) {
|
|
if (seriesItem && seriesItem.type === 'wordCloud') {
|
|
var textStyle = seriesItem.textStyle || {};
|
|
|
|
compatTextStyle(textStyle.normal);
|
|
compatTextStyle(textStyle.emphasis);
|
|
}
|
|
});
|
|
|
|
function compatTextStyle(textStyle) {
|
|
textStyle &&
|
|
external_echarts_.util.each(compats, function (key) {
|
|
if (textStyle.hasOwnProperty(key)) {
|
|
textStyle['text' + external_echarts_.format.capitalFirst(key)] = textStyle[key];
|
|
}
|
|
});
|
|
}
|
|
});
|
|
|
|
function adjustRectAspect(gridRect, aspect) {
|
|
// var outerWidth = gridRect.width + gridRect.x * 2;
|
|
// var outerHeight = gridRect.height + gridRect.y * 2;
|
|
var width = gridRect.width;
|
|
var height = gridRect.height;
|
|
if (width > height * aspect) {
|
|
gridRect.x += (width - height * aspect) / 2;
|
|
gridRect.width = height * aspect;
|
|
} else {
|
|
gridRect.y += (height - width / aspect) / 2;
|
|
gridRect.height = width / aspect;
|
|
}
|
|
}
|
|
|
|
;// CONCATENATED MODULE: ./index.js
|
|
|
|
|
|
|
|
/***/ }),
|
|
|
|
/***/ "echarts/lib/echarts":
|
|
/*!**************************!*\
|
|
!*** external "echarts" ***!
|
|
\**************************/
|
|
/***/ ((module) => {
|
|
|
|
module.exports = __WEBPACK_EXTERNAL_MODULE_echarts_lib_echarts__;
|
|
|
|
/***/ })
|
|
|
|
/******/ });
|
|
/************************************************************************/
|
|
/******/ // The module cache
|
|
/******/ var __webpack_module_cache__ = {};
|
|
/******/
|
|
/******/ // The require function
|
|
/******/ function __webpack_require__(moduleId) {
|
|
/******/ // Check if module is in cache
|
|
/******/ if(__webpack_module_cache__[moduleId]) {
|
|
/******/ return __webpack_module_cache__[moduleId].exports;
|
|
/******/ }
|
|
/******/ // Create a new module (and put it into the cache)
|
|
/******/ var module = __webpack_module_cache__[moduleId] = {
|
|
/******/ // no module.id needed
|
|
/******/ // no module.loaded needed
|
|
/******/ exports: {}
|
|
/******/ };
|
|
/******/
|
|
/******/ // Execute the module function
|
|
/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
|
|
/******/
|
|
/******/ // Return the exports of the module
|
|
/******/ return module.exports;
|
|
/******/ }
|
|
/******/
|
|
/************************************************************************/
|
|
/******/ /* webpack/runtime/make namespace object */
|
|
/******/ (() => {
|
|
/******/ // define __esModule on exports
|
|
/******/ __webpack_require__.r = (exports) => {
|
|
/******/ if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
|
|
/******/ Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
|
|
/******/ }
|
|
/******/ Object.defineProperty(exports, '__esModule', { value: true });
|
|
/******/ };
|
|
/******/ })();
|
|
/******/
|
|
/************************************************************************/
|
|
/******/ // module exports must be returned from runtime so entry inlining is disabled
|
|
/******/ // startup
|
|
/******/ // Load entry module and return exports
|
|
/******/ return __webpack_require__("./index.js");
|
|
/******/ })()
|
|
;
|
|
});
|
|
//# sourceMappingURL=echarts-wordcloud.js.map
|