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echarts-wordcloud.js 代码
(function webpackUniversalModuleDefinition(root, factory) {
if(typeof exports === 'object' && typeof module === 'object')
module.exports = factory(require("echarts"));
else if(typeof define === 'function' && define.amd)
define(["echarts"], factory);
else if(typeof exports === 'object')
exports["echarts-wordcloud"] = factory(require("echarts"));
else
root["echarts-wordcloud"] = factory(root["echarts"]);
})(self, function(__WEBPACK_EXTERNAL_MODULE_echarts_lib_echarts__) {
return /******/ (() => { // webpackBootstrap
/******/ "use strict";
/******/ var __webpack_modules__ = ({
/***/ "./index.js":
/*!******************************!*\
!*** ./index.js + 4 modules ***!
\******************************/
/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
// ESM COMPAT FLAG
__webpack_require__.r(__webpack_exports__);
// EXTERNAL MODULE: external "echarts"
var external_echarts_ = __webpack_require__("echarts/lib/echarts");
;// CONCATENATED MODULE: ./src/WordCloudSeries.js
external_echarts_.extendSeriesModel({
type: 'series.wordCloud',
visualStyleAccessPath: 'textStyle',
visualStyleMapper: function (model) {
return {
fill: model.get('color')
};
},
visualDrawType: 'fill',
optionUpdated: function () {
var option = this.option;
option.gridSize = Math.max(Math.floor(option.gridSize), 4);
},
getInitialData: function (option, ecModel) {
var dimensions = external_echarts_.helper.createDimensions(option.data, {
coordDimensions: ['value']
});
var list = new external_echarts_.List(dimensions, this);
list.initData(option.data);
return list;
},
// Most of options are from https://github.com/timdream/wordcloud2.js/blob/gh-pages/API.md
defaultOption: {
maskImage: null,
// Shape can be 'circle', 'cardioid', 'diamond', 'triangle-forward', 'triangle', 'pentagon', 'star'
shape: 'circle',
keepAspect: false,
left: 'center',
top: 'center',
width: '70%',
height: '80%',
sizeRange: [12, 60],
rotationRange: [-90, 90],
rotationStep: 45,
gridSize: 8,
drawOutOfBound: false,
shrinkToFit: false,
textStyle: {
fontWeight: 'normal'
}
}
});
;// CONCATENATED MODULE: ./src/WordCloudView.js
external_echarts_.extendChartView({
type: 'wordCloud',
render: function (seriesModel, ecModel, api) {
var group = this.group;
group.removeAll();
var data = seriesModel.getData();
var gridSize = seriesModel.get('gridSize');
seriesModel.layoutInstance.ondraw = function (text, size, dataIdx, drawn) {
var itemModel = data.getItemModel(dataIdx);
var textStyleModel = itemModel.getModel('textStyle');
var textEl = new external_echarts_.graphic.Text({
style: external_echarts_.helper.createTextStyle(textStyleModel),
scaleX: 1 / drawn.info.mu,
scaleY: 1 / drawn.info.mu,
x: (drawn.gx + drawn.info.gw / 2) * gridSize,
y: (drawn.gy + drawn.info.gh / 2) * gridSize,
rotation: drawn.rot
});
textEl.setStyle({
x: drawn.info.fillTextOffsetX,
y: drawn.info.fillTextOffsetY + size * 0.5,
text: text,
verticalAlign: 'middle',
fill: data.getItemVisual(dataIdx, 'style').fill,
fontSize: size
});
group.add(textEl);
data.setItemGraphicEl(dataIdx, textEl);
textEl.ensureState('emphasis').style = external_echarts_.helper.createTextStyle(
itemModel.getModel(['emphasis', 'textStyle']),
{
state: 'emphasis'
}
);
textEl.ensureState('blur').style = external_echarts_.helper.createTextStyle(
itemModel.getModel(['blur', 'textStyle']),
{
state: 'blur'
}
);
external_echarts_.helper.enableHoverEmphasis(
textEl,
itemModel.get(['emphasis', 'focus']),
itemModel.get(['emphasis', 'blurScope'])
);
textEl.stateTransition = {
duration: seriesModel.get('animation')
? seriesModel.get(['stateAnimation', 'duration'])
: 0,
easing: seriesModel.get(['stateAnimation', 'easing'])
};
// TODO
textEl.__highDownDispatcher = true;
};
this._model = seriesModel;
},
remove: function () {
this.group.removeAll();
this._model.layoutInstance.dispose();
},
dispose: function () {
this._model.layoutInstance.dispose();
}
});
;// CONCATENATED MODULE: ./src/layout.js
/*!
* wordcloud2.js
* http://timdream.org/wordcloud2.js/
*
* Copyright 2011 - 2019 Tim Guan-tin Chien and contributors.
* Released under the MIT license
*/
// setImmediate
if (!window.setImmediate) {
window.setImmediate = (function setupSetImmediate() {
return (
window.msSetImmediate ||
window.webkitSetImmediate ||
window.mozSetImmediate ||
window.oSetImmediate ||
(function setupSetZeroTimeout() {
if (!window.postMessage || !window.addEventListener) {
return null;
}
var callbacks = [undefined];
var message = 'zero-timeout-message';
// Like setTimeout, but only takes a function argument. There's
// no time argument (always zero) and no arguments (you have to
// use a closure).
var setZeroTimeout = function setZeroTimeout(callback) {
var id = callbacks.length;
callbacks.push(callback);
window.postMessage(message + id.toString(36), '*');
return id;
};
window.addEventListener(
'message',
function setZeroTimeoutMessage(evt) {
// Skipping checking event source, retarded IE confused this window
// object with another in the presence of iframe
if (
typeof evt.data !== 'string' ||
evt.data.substr(0, message.length) !== message /* ||
evt.source !== window */
) {
return;
}
evt.stopImmediatePropagation();
var id = parseInt(evt.data.substr(message.length), 36);
if (!callbacks[id]) {
return;
}
callbacks[id]();
callbacks[id] = undefined;
},
true
);
/* specify clearImmediate() here since we need the scope */
window.clearImmediate = function clearZeroTimeout(id) {
if (!callbacks[id]) {
return;
}
callbacks[id] = undefined;
};
return setZeroTimeout;
})() ||
// fallback
function setImmediateFallback(fn) {
window.setTimeout(fn, 0);
}
);
})();
}
if (!window.clearImmediate) {
window.clearImmediate = (function setupClearImmediate() {
return (
window.msClearImmediate ||
window.webkitClearImmediate ||
window.mozClearImmediate ||
window.oClearImmediate ||
// "clearZeroTimeout" is implement on the previous block ||
// fallback
function clearImmediateFallback(timer) {
window.clearTimeout(timer);
}
);
})();
}
// Check if WordCloud can run on this browser
var isSupported = (function isSupported() {
var canvas = document.createElement('canvas');
if (!canvas || !canvas.getContext) {
return false;
}
var ctx = canvas.getContext('2d');
if (!ctx) {
return false;
}
if (!ctx.getImageData) {
return false;
}
if (!ctx.fillText) {
return false;
}
if (!Array.prototype.some) {
return false;
}
if (!Array.prototype.push) {
return false;
}
return true;
})();
// Find out if the browser impose minium font size by
// drawing small texts on a canvas and measure it's width.
var minFontSize = (function getMinFontSize() {
if (!isSupported) {
return;
}
var ctx = document.createElement('canvas').getContext('2d');
// start from 20
var size = 20;
// two sizes to measure
var hanWidth, mWidth;
while (size) {
ctx.font = size.toString(10) + 'px sans-serif';
if (
ctx.measureText('\uFF37').width === hanWidth &&
ctx.measureText('m').width === mWidth
) {
return size + 1;
}
hanWidth = ctx.measureText('\uFF37').width;
mWidth = ctx.measureText('m').width;
size--;
}
return 0;
})();
var getItemExtraData = function (item) {
if (Array.isArray(item)) {
var itemCopy = item.slice();
// remove data we already have (word and weight)
itemCopy.splice(0, 2);
return itemCopy;
} else {
return [];
}
};
// Based on http://jsfromhell.com/array/shuffle
var shuffleArray = function shuffleArray(arr) {
for (var j, x, i = arr.length; i; ) {
j = Math.floor(Math.random() * i);
x = arr[--i];
arr[i] = arr[j];
arr[j] = x;
}
return arr;
};
var timer = {};
var WordCloud = function WordCloud(elements, options) {
if (!isSupported) {
return;
}
var timerId = Math.floor(Math.random() * Date.now());
if (!Array.isArray(elements)) {
elements = [elements];
}
elements.forEach(function (el, i) {
if (typeof el === 'string') {
elements[i] = document.getElementById(el);
if (!elements[i]) {
throw new Error('The element id specified is not found.');
}
} else if (!el.tagName && !el.appendChild) {
throw new Error(
'You must pass valid HTML elements, or ID of the element.'
);
}
});
/* Default values to be overwritten by options object */
var settings = {
list: [],
fontFamily:
'"Trebuchet MS", "Heiti TC", "微軟正黑體", ' +
'"Arial Unicode MS", "Droid Fallback Sans", sans-serif',
fontWeight: 'normal',
color: 'random-dark',
minSize: 0, // 0 to disable
weightFactor: 1,
clearCanvas: true,
backgroundColor: '#fff', // opaque white = rgba(255, 255, 255, 1)
gridSize: 8,
drawOutOfBound: false,
shrinkToFit: false,
origin: null,
drawMask: false,
maskColor: 'rgba(255,0,0,0.3)',
maskGapWidth: 0.3,
layoutAnimation: true,
wait: 0,
abortThreshold: 0, // disabled
abort: function noop() {},
minRotation: -Math.PI / 2,
maxRotation: Math.PI / 2,
rotationStep: 0.1,
shuffle: true,
rotateRatio: 0.1,
shape: 'circle',
ellipticity: 0.65,
classes: null,
hover: null,
click: null
};
if (options) {
for (var key in options) {
if (key in settings) {
settings[key] = options[key];
}
}
}
/* Convert weightFactor into a function */
if (typeof settings.weightFactor !== 'function') {
var factor = settings.weightFactor;
settings.weightFactor = function weightFactor(pt) {
return pt * factor; // in px
};
}
/* Convert shape into a function */
if (typeof settings.shape !== 'function') {
switch (settings.shape) {
case 'circle':
/* falls through */
default:
// 'circle' is the default and a shortcut in the code loop.
settings.shape = 'circle';
break;
case 'cardioid':
settings.shape = function shapeCardioid(theta) {
return 1 - Math.sin(theta);
};
break;
/*
To work out an X-gon, one has to calculate "m",
where 1/(cos(2*PI/X)+m*sin(2*PI/X)) = 1/(cos(0)+m*sin(0))
http://www.wolframalpha.com/input/?i=1%2F%28cos%282*PI%2FX%29%2Bm*sin%28
2*PI%2FX%29%29+%3D+1%2F%28cos%280%29%2Bm*sin%280%29%29
Copy the solution into polar equation r = 1/(cos(t') + m*sin(t'))
where t' equals to mod(t, 2PI/X);
*/
case 'diamond':
// http://www.wolframalpha.com/input/?i=plot+r+%3D+1%2F%28cos%28mod+
// %28t%2C+PI%2F2%29%29%2Bsin%28mod+%28t%2C+PI%2F2%29%29%29%2C+t+%3D
// +0+..+2*PI
settings.shape = function shapeSquare(theta) {
var thetaPrime = theta % ((2 * Math.PI) / 4);
return 1 / (Math.cos(thetaPrime) + Math.sin(thetaPrime));
};
break;
case 'square':
// http://www.wolframalpha.com/input/?i=plot+r+%3D+min(1%2Fabs(cos(t
// )),1%2Fabs(sin(t)))),+t+%3D+0+..+2*PI
settings.shape = function shapeSquare(theta) {
return Math.min(
1 / Math.abs(Math.cos(theta)),
1 / Math.abs(Math.sin(theta))
);
};
break;
case 'triangle-forward':
// http://www.wolframalpha.com/input/?i=plot+r+%3D+1%2F%28cos%28mod+
// %28t%2C+2*PI%2F3%29%29%2Bsqrt%283%29sin%28mod+%28t%2C+2*PI%2F3%29
// %29%29%2C+t+%3D+0+..+2*PI
settings.shape = function shapeTriangle(theta) {
var thetaPrime = theta % ((2 * Math.PI) / 3);
return (
1 / (Math.cos(thetaPrime) + Math.sqrt(3) * Math.sin(thetaPrime))
);
};
break;
case 'triangle':
case 'triangle-upright':
settings.shape = function shapeTriangle(theta) {
var thetaPrime = (theta + (Math.PI * 3) / 2) % ((2 * Math.PI) / 3);
return (
1 / (Math.cos(thetaPrime) + Math.sqrt(3) * Math.sin(thetaPrime))
);
};
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));
};
break;
case 'star':
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
) {
return (
1 /
(Math.cos((2 * Math.PI) / 10 - thetaPrime) +
3.07768 * Math.sin((2 * Math.PI) / 10 - thetaPrime))
);
} 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 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