From c51353335f5528e5e8b19e06d421a48f1c491145 Mon Sep 17 00:00:00 2001 From: weixin_47563380 Date: Wed, 14 Aug 2024 15:13:00 +0800 Subject: [PATCH] Wed Aug 14 15:13:00 CST 2024 inscode --- test/utils/wxcharts.js | 2044 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2044 insertions(+) create mode 100644 test/utils/wxcharts.js diff --git a/test/utils/wxcharts.js b/test/utils/wxcharts.js new file mode 100644 index 0000000..aa9254e --- /dev/null +++ b/test/utils/wxcharts.js @@ -0,0 +1,2044 @@ +/* + * charts for WeChat small app v1.0 + * + * https://github.com/xiaolin3303/wx-charts + * 2016-11-28 + * + * Designed and built with all the love of Web + */ + +'use strict'; + +var config = { + yAxisWidth: 15, + yAxisSplit: 5, + xAxisHeight: 15, + xAxisLineHeight: 15, + legendHeight: 15, + yAxisTitleWidth: 15, + padding: 12, + columePadding: 3, + fontSize: 10, + dataPointShape: ['diamond', 'circle', 'triangle', 'rect'], + colors: ['#7cb5ec', '#f7a35c', '#434348', '#90ed7d', '#f15c80', '#8085e9'], + pieChartLinePadding: 25, + pieChartTextPadding: 15, + xAxisTextPadding: 3, + titleColor: '#333333', + titleFontSize: 20, + subtitleColor: '#999999', + subtitleFontSize: 15, + toolTipPadding: 3, + toolTipBackground: '#000000', + toolTipOpacity: 0.7, + toolTipLineHeight: 14, + radarGridCount: 3, + radarLabelTextMargin: 15 +}; + +// Object.assign polyfill +// https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign +function assign(target, varArgs) { + if (target == null) { + // TypeError if undefined or null + throw new TypeError('Cannot convert undefined or null to object'); + } + + var to = Object(target); + + for (var index = 1; index < arguments.length; index++) { + var nextSource = arguments[index]; + + if (nextSource != null) { + // Skip over if undefined or null + for (var nextKey in nextSource) { + // Avoid bugs when hasOwnProperty is shadowed + if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) { + to[nextKey] = nextSource[nextKey]; + } + } + } + } + return to; +} + +var util = { + toFixed: function toFixed(num, limit) { + limit = limit || 2; + if (this.isFloat(num)) { + num = num.toFixed(limit); + } + return num; + }, + isFloat: function isFloat(num) { + return num % 1 !== 0; + }, + approximatelyEqual: function approximatelyEqual(num1, num2) { + return Math.abs(num1 - num2) < 1e-10; + }, + isSameSign: function isSameSign(num1, num2) { + return Math.abs(num1) === num1 && Math.abs(num2) === num2 || Math.abs(num1) !== num1 && Math.abs(num2) !== num2; + }, + isSameXCoordinateArea: function isSameXCoordinateArea(p1, p2) { + return this.isSameSign(p1.x, p2.x); + }, + isCollision: function isCollision(obj1, obj2) { + obj1.end = {}; + obj1.end.x = obj1.start.x + obj1.width; + obj1.end.y = obj1.start.y - obj1.height; + obj2.end = {}; + obj2.end.x = obj2.start.x + obj2.width; + obj2.end.y = obj2.start.y - obj2.height; + var flag = obj2.start.x > obj1.end.x || obj2.end.x < obj1.start.x || obj2.end.y > obj1.start.y || obj2.start.y < obj1.end.y; + + return !flag; + } +}; + +function findRange(num, type, limit) { + if (isNaN(num)) { + throw new Error('[wxCharts] unvalid series data!'); + } + limit = limit || 10; + type = type ? type : 'upper'; + var multiple = 1; + while (limit < 1) { + limit *= 10; + multiple *= 10; + } + if (type === 'upper') { + num = Math.ceil(num * multiple); + } else { + num = Math.floor(num * multiple); + } + while (num % limit !== 0) { + if (type === 'upper') { + num++; + } else { + num--; + } + } + + return num / multiple; +} + +function calValidDistance(distance, chartData, config, opts) { + + var dataChartAreaWidth = opts.width - config.padding - chartData.xAxisPoints[0]; + var dataChartWidth = chartData.eachSpacing * opts.categories.length; + var validDistance = distance; + if (distance >= 0) { + validDistance = 0; + } else if (Math.abs(distance) >= dataChartWidth - dataChartAreaWidth) { + validDistance = dataChartAreaWidth - dataChartWidth; + } + return validDistance; +} + +function isInAngleRange(angle, startAngle, endAngle) { + function adjust(angle) { + while (angle < 0) { + angle += 2 * Math.PI; + } + while (angle > 2 * Math.PI) { + angle -= 2 * Math.PI; + } + + return angle; + } + + angle = adjust(angle); + startAngle = adjust(startAngle); + endAngle = adjust(endAngle); + if (startAngle > endAngle) { + endAngle += 2 * Math.PI; + if (angle < startAngle) { + angle += 2 * Math.PI; + } + } + + return angle >= startAngle && angle <= endAngle; +} + +function calRotateTranslate(x, y, h) { + var xv = x; + var yv = h - y; + + var transX = xv + (h - yv - xv) / Math.sqrt(2); + transX *= -1; + + var transY = (h - yv) * (Math.sqrt(2) - 1) - (h - yv - xv) / Math.sqrt(2); + + return { + transX: transX, + transY: transY + }; +} + +function createCurveControlPoints(points, i) { + + function isNotMiddlePoint(points, i) { + if (points[i - 1] && points[i + 1]) { + return points[i].y >= Math.max(points[i - 1].y, points[i + 1].y) || points[i].y <= Math.min(points[i - 1].y, points[i + 1].y); + } else { + return false; + } + } + + var a = 0.2; + var b = 0.2; + var pAx = null; + var pAy = null; + var pBx = null; + var pBy = null; + if (i < 1) { + pAx = points[0].x + (points[1].x - points[0].x) * a; + pAy = points[0].y + (points[1].y - points[0].y) * a; + } else { + pAx = points[i].x + (points[i + 1].x - points[i - 1].x) * a; + pAy = points[i].y + (points[i + 1].y - points[i - 1].y) * a; + } + + if (i > points.length - 3) { + var last = points.length - 1; + pBx = points[last].x - (points[last].x - points[last - 1].x) * b; + pBy = points[last].y - (points[last].y - points[last - 1].y) * b; + } else { + pBx = points[i + 1].x - (points[i + 2].x - points[i].x) * b; + pBy = points[i + 1].y - (points[i + 2].y - points[i].y) * b; + } + + // fix issue https://github.com/xiaolin3303/wx-charts/issues/79 + if (isNotMiddlePoint(points, i + 1)) { + pBy = points[i + 1].y; + } + if (isNotMiddlePoint(points, i)) { + pAy = points[i].y; + } + + return { + ctrA: { x: pAx, y: pAy }, + ctrB: { x: pBx, y: pBy } + }; +} + +function convertCoordinateOrigin(x, y, center) { + return { + x: center.x + x, + y: center.y - y + }; +} + +function avoidCollision(obj, target) { + if (target) { + // is collision test + while (util.isCollision(obj, target)) { + if (obj.start.x > 0) { + obj.start.y--; + } else if (obj.start.x < 0) { + obj.start.y++; + } else { + if (obj.start.y > 0) { + obj.start.y++; + } else { + obj.start.y--; + } + } + } + } + return obj; +} + +function fillSeriesColor(series, config) { + var index = 0; + return series.map(function (item) { + if (!item.color) { + item.color = config.colors[index]; + index = (index + 1) % config.colors.length; + } + return item; + }); +} + +function getDataRange(minData, maxData) { + var limit = 0; + var range = maxData - minData; + if (range >= 10000) { + limit = 1000; + } else if (range >= 1000) { + limit = 100; + } else if (range >= 100) { + limit = 10; + } else if (range >= 10) { + limit = 5; + } else if (range >= 1) { + limit = 1; + } else if (range >= 0.1) { + limit = 0.1; + } else { + limit = 0.01; + } + return { + minRange: findRange(minData, 'lower', limit), + maxRange: findRange(maxData, 'upper', limit) + }; +} + +function measureText(text) { + var fontSize = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 10; + + // wx canvas 未实现measureText方法, 此处自行实现 + text = String(text); + var text = text.split(''); + var width = 0; + text.forEach(function (item) { + if (/[a-zA-Z]/.test(item)) { + width += 7; + } else if (/[0-9]/.test(item)) { + width += 5.5; + } else if (/\./.test(item)) { + width += 2.7; + } else if (/-/.test(item)) { + width += 3.25; + } else if (/[\u4e00-\u9fa5]/.test(item)) { + width += 10; + } else if (/\(|\)/.test(item)) { + width += 3.73; + } else if (/\s/.test(item)) { + width += 2.5; + } else if (/%/.test(item)) { + width += 8; + } else { + width += 10; + } + }); + return width * fontSize / 10; +} + +function dataCombine(series) { + return series.reduce(function (a, b) { + return (a.data ? a.data : a).concat(b.data); + }, []); +} + +function getSeriesDataItem(series, index) { + var data = []; + series.forEach(function (item) { + if (item.data[index] !== null && typeof item.data[index] !== 'undefined') { + var seriesItem = {}; + seriesItem.color = item.color; + seriesItem.name = item.name; + seriesItem.data = item.format ? item.format(item.data[index]) : item.data[index]; + data.push(seriesItem); + } + }); + + return data; +} + + + +function getMaxTextListLength(list) { + var lengthList = list.map(function (item) { + return measureText(item); + }); + return Math.max.apply(null, lengthList); +} + +function getRadarCoordinateSeries(length) { + var eachAngle = 2 * Math.PI / length; + var CoordinateSeries = []; + for (var i = 0; i < length; i++) { + CoordinateSeries.push(eachAngle * i); + } + + return CoordinateSeries.map(function (item) { + return -1 * item + Math.PI / 2; + }); +} + +function getToolTipData(seriesData, calPoints, index, categories) { + var option = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {}; + + var textList = seriesData.map(function (item) { + return { + text: option.format ? option.format(item, categories[index]) : item.name + ': ' + item.data, + color: item.color + }; + }); + var validCalPoints = []; + var offset = { + x: 0, + y: 0 + }; + calPoints.forEach(function (points) { + if (typeof points[index] !== 'undefined' && points[index] !== null) { + validCalPoints.push(points[index]); + } + }); + validCalPoints.forEach(function (item) { + offset.x = Math.round(item.x); + offset.y += item.y; + }); + + offset.y /= validCalPoints.length; + return { textList: textList, offset: offset }; +} + +function findCurrentIndex(currentPoints, xAxisPoints, opts, config) { + var offset = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0; + + var currentIndex = -1; + if (isInExactChartArea(currentPoints, opts, config)) { + xAxisPoints.forEach(function (item, index) { + if (currentPoints.x + offset > item) { + currentIndex = index; + } + }); + } + + return currentIndex; +} + +function isInExactChartArea(currentPoints, opts, config) { + return currentPoints.x < opts.width - config.padding && currentPoints.x > config.padding + config.yAxisWidth + config.yAxisTitleWidth && currentPoints.y > config.padding && currentPoints.y < opts.height - config.legendHeight - config.xAxisHeight - config.padding; +} + +function findRadarChartCurrentIndex(currentPoints, radarData, count) { + var eachAngleArea = 2 * Math.PI / count; + var currentIndex = -1; + if (isInExactPieChartArea(currentPoints, radarData.center, radarData.radius)) { + var fixAngle = function fixAngle(angle) { + if (angle < 0) { + angle += 2 * Math.PI; + } + if (angle > 2 * Math.PI) { + angle -= 2 * Math.PI; + } + return angle; + }; + + var angle = Math.atan2(radarData.center.y - currentPoints.y, currentPoints.x - radarData.center.x); + angle = -1 * angle; + if (angle < 0) { + angle += 2 * Math.PI; + } + + var angleList = radarData.angleList.map(function (item) { + item = fixAngle(-1 * item); + + return item; + }); + + angleList.forEach(function (item, index) { + var rangeStart = fixAngle(item - eachAngleArea / 2); + var rangeEnd = fixAngle(item + eachAngleArea / 2); + if (rangeEnd < rangeStart) { + rangeEnd += 2 * Math.PI; + } + if (angle >= rangeStart && angle <= rangeEnd || angle + 2 * Math.PI >= rangeStart && angle + 2 * Math.PI <= rangeEnd) { + currentIndex = index; + } + }); + } + + return currentIndex; +} + +function findPieChartCurrentIndex(currentPoints, pieData) { + var currentIndex = -1; + if (isInExactPieChartArea(currentPoints, pieData.center, pieData.radius)) { + var angle = Math.atan2(pieData.center.y - currentPoints.y, currentPoints.x - pieData.center.x); + angle = -angle; + for (var i = 0, len = pieData.series.length; i < len; i++) { + var item = pieData.series[i]; + if (isInAngleRange(angle, item._start_, item._start_ + item._proportion_ * 2 * Math.PI)) { + currentIndex = i; + break; + } + } + } + + return currentIndex; +} + +function isInExactPieChartArea(currentPoints, center, radius) { + return Math.pow(currentPoints.x - center.x, 2) + Math.pow(currentPoints.y - center.y, 2) <= Math.pow(radius, 2); +} + +function splitPoints(points) { + var newPoints = []; + var items = []; + points.forEach(function (item, index) { + if (item !== null) { + items.push(item); + } else { + if (items.length) { + newPoints.push(items); + } + items = []; + } + }); + if (items.length) { + newPoints.push(items); + } + + return newPoints; +} + +function calLegendData(series, opts, config) { + if (opts.legend === false) { + return { + legendList: [], + legendHeight: 0 + }; + } + var padding = 5; + var marginTop = 8; + var shapeWidth = 15; + var legendList = []; + var widthCount = 0; + var currentRow = []; + series.forEach(function (item) { + var itemWidth = 3 * padding + shapeWidth + measureText(item.name || 'undefined'); + if (widthCount + itemWidth > opts.width) { + legendList.push(currentRow); + widthCount = itemWidth; + currentRow = [item]; + } else { + widthCount += itemWidth; + currentRow.push(item); + } + }); + if (currentRow.length) { + legendList.push(currentRow); + } + + return { + legendList: legendList, + legendHeight: legendList.length * (config.fontSize + marginTop) + padding + }; +} + +function calCategoriesData(categories, opts, config) { + var result = { + angle: 0, + xAxisHeight: config.xAxisHeight + }; + + var _getXAxisPoints = getXAxisPoints(categories, opts, config), + eachSpacing = _getXAxisPoints.eachSpacing; + + // get max length of categories text + + + var categoriesTextLenth = categories.map(function (item) { + return measureText(item); + }); + + var maxTextLength = Math.max.apply(this, categoriesTextLenth); + + if (maxTextLength + 2 * config.xAxisTextPadding > eachSpacing) { + result.angle = 45 * Math.PI / 180; + result.xAxisHeight = 2 * config.xAxisTextPadding + maxTextLength * Math.sin(result.angle); + } + + return result; +} + +function getRadarDataPoints(angleList, center, radius, series, opts) { + var process = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 1; + + var radarOption = opts.extra.radar || {}; + radarOption.max = radarOption.max || 0; + var maxData = Math.max(radarOption.max, Math.max.apply(null, dataCombine(series))); + + var data = []; + series.forEach(function (each) { + var listItem = {}; + listItem.color = each.color; + listItem.data = []; + each.data.forEach(function (item, index) { + var tmp = {}; + tmp.angle = angleList[index]; + + tmp.proportion = item / maxData; + tmp.position = convertCoordinateOrigin(radius * tmp.proportion * process * Math.cos(tmp.angle), radius * tmp.proportion * process * Math.sin(tmp.angle), center); + listItem.data.push(tmp); + }); + + data.push(listItem); + }); + + return data; +} + +function getPieDataPoints(series) { + var process = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1; + + var count = 0; + var _start_ = 0; + series.forEach(function (item) { + item.data = item.data === null ? 0 : item.data; + count += item.data; + }); + series.forEach(function (item) { + item.data = item.data === null ? 0 : item.data; + item._proportion_ = item.data / count * process; + }); + series.forEach(function (item) { + item._start_ = _start_; + _start_ += 2 * item._proportion_ * Math.PI; + }); + + return series; +} + +function getPieTextMaxLength(series) { + series = getPieDataPoints(series); + var maxLength = 0; + series.forEach(function (item) { + var text = item.format ? item.format(+item._proportion_.toFixed(2)) : util.toFixed(item._proportion_ * 100) + '%'; + maxLength = Math.max(maxLength, measureText(text)); + }); + + return maxLength; +} + +function fixColumeData(points, eachSpacing, columnLen, index, config, opts) { + return points.map(function (item) { + if (item === null) { + return null; + } + item.width = (eachSpacing - 2 * config.columePadding) / columnLen; + + if (opts.extra.column && opts.extra.column.width && +opts.extra.column.width > 0) { + // customer column width + item.width = Math.min(item.width, +opts.extra.column.width); + } else { + // default width should less tran 25px + // don't ask me why, I don't know + item.width = Math.min(item.width, 25); + } + item.x += (index + 0.5 - columnLen / 2) * item.width; + + return item; + }); +} + +function getXAxisPoints(categories, opts, config) { + var yAxisTotalWidth = config.yAxisWidth + config.yAxisTitleWidth; + var spacingValid = opts.width - 2 * config.padding - yAxisTotalWidth; + var dataCount = opts.enableScroll ? Math.min(5, categories.length) : categories.length; + var eachSpacing = spacingValid / dataCount; + + var xAxisPoints = []; + var startX = config.padding + yAxisTotalWidth; + var endX = opts.width - config.padding; + categories.forEach(function (item, index) { + xAxisPoints.push(startX + index * eachSpacing); + }); + if (opts.enableScroll === true) { + xAxisPoints.push(startX + categories.length * eachSpacing); + } else { + xAxisPoints.push(endX); + } + + return { xAxisPoints: xAxisPoints, startX: startX, endX: endX, eachSpacing: eachSpacing }; +} + +function getDataPoints(data, minRange, maxRange, xAxisPoints, eachSpacing, opts, config) { + var process = arguments.length > 7 && arguments[7] !== undefined ? arguments[7] : 1; + + var points = []; + var validHeight = opts.height - 2 * config.padding - config.xAxisHeight - config.legendHeight; + data.forEach(function (item, index) { + if (item === null) { + points.push(null); + } else { + var point = {}; + point.x = xAxisPoints[index] + Math.round(eachSpacing / 2); + var height = validHeight * (item - minRange) / (maxRange - minRange); + height *= process; + point.y = opts.height - config.xAxisHeight - config.legendHeight - Math.round(height) - config.padding; + points.push(point); + } + }); + + return points; +} + +function getYAxisTextList(series, opts, config) { + var data = dataCombine(series); + // remove null from data + data = data.filter(function (item) { + return item !== null; + }); + var minData = Math.min.apply(this, data); + var maxData = Math.max.apply(this, data); + if (typeof opts.yAxis.min === 'number') { + minData = Math.min(opts.yAxis.min, minData); + } + if (typeof opts.yAxis.max === 'number') { + maxData = Math.max(opts.yAxis.max, maxData); + } + + // fix issue https://github.com/xiaolin3303/wx-charts/issues/9 + if (minData === maxData) { + var rangeSpan = maxData || 1; + minData -= rangeSpan; + maxData += rangeSpan; + } + + var dataRange = getDataRange(minData, maxData); + var minRange = dataRange.minRange; + var maxRange = dataRange.maxRange; + + var range = []; + var eachRange = (maxRange - minRange) / config.yAxisSplit; + + for (var i = 0; i <= config.yAxisSplit; i++) { + range.push(minRange + eachRange * i); + } + return range.reverse(); +} + +function calYAxisData(series, opts, config) { + + var ranges = getYAxisTextList(series, opts, config); + var yAxisWidth = config.yAxisWidth; + var rangesFormat = ranges.map(function (item) { + item = util.toFixed(item, 2); + item = opts.yAxis.format ? opts.yAxis.format(Number(item)) : item; + yAxisWidth = Math.max(yAxisWidth, measureText(item) + 5); + return item; + }); + if (opts.yAxis.disabled === true) { + yAxisWidth = 0; + } + + return { rangesFormat: rangesFormat, ranges: ranges, yAxisWidth: yAxisWidth }; +} + +function drawPointShape(points, color, shape, context) { + context.beginPath(); + context.setStrokeStyle("#ffffff"); + context.setLineWidth(1); + context.setFillStyle(color); + + if (shape === 'diamond') { + points.forEach(function (item, index) { + if (item !== null) { + context.moveTo(item.x, item.y - 4.5); + context.lineTo(item.x - 4.5, item.y); + context.lineTo(item.x, item.y + 4.5); + context.lineTo(item.x + 4.5, item.y); + context.lineTo(item.x, item.y - 4.5); + } + }); + } else if (shape === 'circle') { + points.forEach(function (item, index) { + if (item !== null) { + context.moveTo(item.x + 3.5, item.y); + context.arc(item.x, item.y, 4, 0, 2 * Math.PI, false); + } + }); + } else if (shape === 'rect') { + points.forEach(function (item, index) { + if (item !== null) { + context.moveTo(item.x - 3.5, item.y - 3.5); + context.rect(item.x - 3.5, item.y - 3.5, 7, 7); + } + }); + } else if (shape === 'triangle') { + points.forEach(function (item, index) { + if (item !== null) { + context.moveTo(item.x, item.y - 4.5); + context.lineTo(item.x - 4.5, item.y + 4.5); + context.lineTo(item.x + 4.5, item.y + 4.5); + context.lineTo(item.x, item.y - 4.5); + } + }); + } + context.closePath(); + context.fill(); + context.stroke(); +} + +function drawRingTitle(opts, config, context) { + var titlefontSize = opts.title.fontSize || config.titleFontSize; + var subtitlefontSize = opts.subtitle.fontSize || config.subtitleFontSize; + var title = opts.title.name || ''; + var subtitle = opts.subtitle.name || ''; + var titleFontColor = opts.title.color || config.titleColor; + var subtitleFontColor = opts.subtitle.color || config.subtitleColor; + var titleHeight = title ? titlefontSize : 0; + var subtitleHeight = subtitle ? subtitlefontSize : 0; + var margin = 5; + if (subtitle) { + var textWidth = measureText(subtitle, subtitlefontSize); + var startX = (opts.width - textWidth) / 2 + (opts.subtitle.offsetX || 0); + var startY = (opts.height - config.legendHeight + subtitlefontSize) / 2; + if (title) { + startY -= (titleHeight + margin) / 2; + } + context.beginPath(); + context.setFontSize(subtitlefontSize); + context.setFillStyle(subtitleFontColor); + context.fillText(subtitle, startX, startY); + context.stroke(); + context.closePath(); + } + if (title) { + var _textWidth = measureText(title, titlefontSize); + var _startX = (opts.width - _textWidth) / 2 + (opts.title.offsetX || 0); + var _startY = (opts.height - config.legendHeight + titlefontSize) / 2; + if (subtitle) { + _startY += (subtitleHeight + margin) / 2; + } + context.beginPath(); + context.setFontSize(titlefontSize); + context.setFillStyle(titleFontColor); + context.fillText(title, _startX, _startY); + context.stroke(); + context.closePath(); + } +} + +function drawPointText(points, series, config, context) { + // 绘制数据文案 + var data = series.data; + + context.beginPath(); + context.setFontSize(config.fontSize); + context.setFillStyle('#666666'); + points.forEach(function (item, index) { + if (item !== null) { + var formatVal = series.format ? series.format(data[index]) : data[index]; + context.fillText(formatVal, item.x - measureText(formatVal) / 2, item.y - 2); + } + }); + context.closePath(); + context.stroke(); +} + +function drawRadarLabel(angleList, radius, centerPosition, opts, config, context) { + var radarOption = opts.extra.radar || {}; + radius += config.radarLabelTextMargin; + context.beginPath(); + context.setFontSize(config.fontSize); + context.setFillStyle(radarOption.labelColor || '#666666'); + angleList.forEach(function (angle, index) { + var pos = { + x: radius * Math.cos(angle), + y: radius * Math.sin(angle) + }; + var posRelativeCanvas = convertCoordinateOrigin(pos.x, pos.y, centerPosition); + var startX = posRelativeCanvas.x; + var startY = posRelativeCanvas.y; + if (util.approximatelyEqual(pos.x, 0)) { + startX -= measureText(opts.categories[index] || '') / 2; + } else if (pos.x < 0) { + startX -= measureText(opts.categories[index] || ''); + } + context.fillText(opts.categories[index] || '', startX, startY + config.fontSize / 2); + }); + context.stroke(); + context.closePath(); +} + +function drawPieText(series, opts, config, context, radius, center) { + var lineRadius = radius + config.pieChartLinePadding; + var textObjectCollection = []; + var lastTextObject = null; + + var seriesConvert = series.map(function (item) { + var arc = 2 * Math.PI - (item._start_ + 2 * Math.PI * item._proportion_ / 2); + var text = item.format ? item.format(+item._proportion_.toFixed(2)) : util.toFixed(item._proportion_ * 100) + '%'; + var color = item.color; + return { arc: arc, text: text, color: color }; + }); + seriesConvert.forEach(function (item) { + // line end + var orginX1 = Math.cos(item.arc) * lineRadius; + var orginY1 = Math.sin(item.arc) * lineRadius; + + // line start + var orginX2 = Math.cos(item.arc) * radius; + var orginY2 = Math.sin(item.arc) * radius; + + // text start + var orginX3 = orginX1 >= 0 ? orginX1 + config.pieChartTextPadding : orginX1 - config.pieChartTextPadding; + var orginY3 = orginY1; + + var textWidth = measureText(item.text); + var startY = orginY3; + + if (lastTextObject && util.isSameXCoordinateArea(lastTextObject.start, { x: orginX3 })) { + if (orginX3 > 0) { + startY = Math.min(orginY3, lastTextObject.start.y); + } else if (orginX1 < 0) { + startY = Math.max(orginY3, lastTextObject.start.y); + } else { + if (orginY3 > 0) { + startY = Math.max(orginY3, lastTextObject.start.y); + } else { + startY = Math.min(orginY3, lastTextObject.start.y); + } + } + } + + if (orginX3 < 0) { + orginX3 -= textWidth; + } + + var textObject = { + lineStart: { + x: orginX2, + y: orginY2 + }, + lineEnd: { + x: orginX1, + y: orginY1 + }, + start: { + x: orginX3, + y: startY + }, + width: textWidth, + height: config.fontSize, + text: item.text, + color: item.color + }; + + lastTextObject = avoidCollision(textObject, lastTextObject); + textObjectCollection.push(lastTextObject); + }); + + textObjectCollection.forEach(function (item) { + var lineStartPoistion = convertCoordinateOrigin(item.lineStart.x, item.lineStart.y, center); + var lineEndPoistion = convertCoordinateOrigin(item.lineEnd.x, item.lineEnd.y, center); + var textPosition = convertCoordinateOrigin(item.start.x, item.start.y, center); + context.setLineWidth(1); + context.setFontSize(config.fontSize); + context.beginPath(); + context.setStrokeStyle(item.color); + context.setFillStyle(item.color); + context.moveTo(lineStartPoistion.x, lineStartPoistion.y); + var curveStartX = item.start.x < 0 ? textPosition.x + item.width : textPosition.x; + var textStartX = item.start.x < 0 ? textPosition.x - 5 : textPosition.x + 5; + context.quadraticCurveTo(lineEndPoistion.x, lineEndPoistion.y, curveStartX, textPosition.y); + context.moveTo(lineStartPoistion.x, lineStartPoistion.y); + context.stroke(); + context.closePath(); + context.beginPath(); + context.moveTo(textPosition.x + item.width, textPosition.y); + context.arc(curveStartX, textPosition.y, 2, 0, 2 * Math.PI); + context.closePath(); + context.fill(); + context.beginPath(); + context.setFillStyle('#666666'); + context.fillText(item.text, textStartX, textPosition.y + 3); + context.closePath(); + context.stroke(); + + context.closePath(); + }); +} + +function drawToolTipSplitLine(offsetX, opts, config, context) { + var startY = config.padding; + var endY = opts.height - config.padding - config.xAxisHeight - config.legendHeight; + context.beginPath(); + context.setStrokeStyle('#cccccc'); + context.setLineWidth(1); + context.moveTo(offsetX, startY); + context.lineTo(offsetX, endY); + context.stroke(); + context.closePath(); +} + +function drawToolTip(textList, offset, opts, config, context) { + var legendWidth = 4; + var legendMarginRight = 5; + var arrowWidth = 8; + var isOverRightBorder = false; + offset = assign({ + x: 0, + y: 0 + }, offset); + offset.y -= 8; + var textWidth = textList.map(function (item) { + return measureText(item.text); + }); + + var toolTipWidth = legendWidth + legendMarginRight + 4 * config.toolTipPadding + Math.max.apply(null, textWidth); + var toolTipHeight = 2 * config.toolTipPadding + textList.length * config.toolTipLineHeight; + + // if beyond the right border + if (offset.x - Math.abs(opts._scrollDistance_) + arrowWidth + toolTipWidth > opts.width) { + isOverRightBorder = true; + } + + // draw background rect + context.beginPath(); + context.setFillStyle(opts.tooltip.option.background || config.toolTipBackground); + context.setGlobalAlpha(config.toolTipOpacity); + if (isOverRightBorder) { + context.moveTo(offset.x, offset.y + 10); + context.lineTo(offset.x - arrowWidth, offset.y + 10 - 5); + context.lineTo(offset.x - arrowWidth, offset.y + 10 + 5); + context.moveTo(offset.x, offset.y + 10); + context.fillRect(offset.x - toolTipWidth - arrowWidth, offset.y, toolTipWidth, toolTipHeight); + } else { + context.moveTo(offset.x, offset.y + 10); + context.lineTo(offset.x + arrowWidth, offset.y + 10 - 5); + context.lineTo(offset.x + arrowWidth, offset.y + 10 + 5); + context.moveTo(offset.x, offset.y + 10); + context.fillRect(offset.x + arrowWidth, offset.y, toolTipWidth, toolTipHeight); + } + + context.closePath(); + context.fill(); + context.setGlobalAlpha(1); + + // draw legend + textList.forEach(function (item, index) { + context.beginPath(); + context.setFillStyle(item.color); + var startX = offset.x + arrowWidth + 2 * config.toolTipPadding; + var startY = offset.y + (config.toolTipLineHeight - config.fontSize) / 2 + config.toolTipLineHeight * index + config.toolTipPadding; + if (isOverRightBorder) { + startX = offset.x - toolTipWidth - arrowWidth + 2 * config.toolTipPadding; + } + context.fillRect(startX, startY, legendWidth, config.fontSize); + context.closePath(); + }); + + // draw text list + context.beginPath(); + context.setFontSize(config.fontSize); + context.setFillStyle('#ffffff'); + textList.forEach(function (item, index) { + var startX = offset.x + arrowWidth + 2 * config.toolTipPadding + legendWidth + legendMarginRight; + if (isOverRightBorder) { + startX = offset.x - toolTipWidth - arrowWidth + 2 * config.toolTipPadding + +legendWidth + legendMarginRight; + } + var startY = offset.y + (config.toolTipLineHeight - config.fontSize) / 2 + config.toolTipLineHeight * index + config.toolTipPadding; + context.fillText(item.text, startX, startY + config.fontSize); + }); + context.stroke(); + context.closePath(); +} + +function drawYAxisTitle(title, opts, config, context) { + var startX = config.xAxisHeight + (opts.height - config.xAxisHeight - measureText(title)) / 2; + context.save(); + context.beginPath(); + context.setFontSize(config.fontSize); + context.setFillStyle(opts.yAxis.titleFontColor || '#333333'); + context.translate(0, opts.height); + context.rotate(-90 * Math.PI / 180); + context.fillText(title, startX, config.padding + 0.5 * config.fontSize); + context.stroke(); + context.closePath(); + context.restore(); +} + +function drawColumnDataPoints(series, opts, config, context) { + var process = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 1; + + var _calYAxisData = calYAxisData(series, opts, config), + ranges = _calYAxisData.ranges; + + var _getXAxisPoints = getXAxisPoints(opts.categories, opts, config), + xAxisPoints = _getXAxisPoints.xAxisPoints, + eachSpacing = _getXAxisPoints.eachSpacing; + + var minRange = ranges.pop(); + var maxRange = ranges.shift(); + context.save(); + if (opts._scrollDistance_ && opts._scrollDistance_ !== 0 && opts.enableScroll === true) { + context.translate(opts._scrollDistance_, 0); + } + + series.forEach(function (eachSeries, seriesIndex) { + var data = eachSeries.data; + var points = getDataPoints(data, minRange, maxRange, xAxisPoints, eachSpacing, opts, config, process); + points = fixColumeData(points, eachSpacing, series.length, seriesIndex, config, opts); + + // 绘制柱状数据图 + context.beginPath(); + context.setFillStyle(eachSeries.color); + points.forEach(function (item, index) { + if (item !== null) { + var startX = item.x - item.width / 2 + 1; + var height = opts.height - item.y - config.padding - config.xAxisHeight - config.legendHeight; + context.moveTo(startX, item.y); + context.rect(startX, item.y, item.width - 2, height); + } + }); + context.closePath(); + context.fill(); + }); + series.forEach(function (eachSeries, seriesIndex) { + var data = eachSeries.data; + var points = getDataPoints(data, minRange, maxRange, xAxisPoints, eachSpacing, opts, config, process); + points = fixColumeData(points, eachSpacing, series.length, seriesIndex, config, opts); + if (opts.dataLabel !== false && process === 1) { + drawPointText(points, eachSeries, config, context); + } + }); + context.restore(); + return { + xAxisPoints: xAxisPoints, + eachSpacing: eachSpacing + }; +} + +function drawAreaDataPoints(series, opts, config, context) { + var process = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 1; + + var _calYAxisData2 = calYAxisData(series, opts, config), + ranges = _calYAxisData2.ranges; + + var _getXAxisPoints2 = getXAxisPoints(opts.categories, opts, config), + xAxisPoints = _getXAxisPoints2.xAxisPoints, + eachSpacing = _getXAxisPoints2.eachSpacing; + + var minRange = ranges.pop(); + var maxRange = ranges.shift(); + var endY = opts.height - config.padding - config.xAxisHeight - config.legendHeight; + var calPoints = []; + + context.save(); + if (opts._scrollDistance_ && opts._scrollDistance_ !== 0 && opts.enableScroll === true) { + context.translate(opts._scrollDistance_, 0); + } + + if (opts.tooltip && opts.tooltip.textList && opts.tooltip.textList.length && process === 1) { + drawToolTipSplitLine(opts.tooltip.offset.x, opts, config, context); + } + + series.forEach(function (eachSeries, seriesIndex) { + var data = eachSeries.data; + var points = getDataPoints(data, minRange, maxRange, xAxisPoints, eachSpacing, opts, config, process); + calPoints.push(points); + + var splitPointList = splitPoints(points); + + splitPointList.forEach(function (points) { + // 绘制区域数据 + context.beginPath(); + context.setStrokeStyle(eachSeries.color); + context.setFillStyle(eachSeries.color); + context.setGlobalAlpha(0.6); + context.setLineWidth(2); + if (points.length > 1) { + var firstPoint = points[0]; + var lastPoint = points[points.length - 1]; + + context.moveTo(firstPoint.x, firstPoint.y); + if (opts.extra.lineStyle === 'curve') { + points.forEach(function (item, index) { + if (index > 0) { + var ctrlPoint = createCurveControlPoints(points, index - 1); + context.bezierCurveTo(ctrlPoint.ctrA.x, ctrlPoint.ctrA.y, ctrlPoint.ctrB.x, ctrlPoint.ctrB.y, item.x, item.y); + } + }); + } else { + points.forEach(function (item, index) { + if (index > 0) { + context.lineTo(item.x, item.y); + } + }); + } + + context.lineTo(lastPoint.x, endY); + context.lineTo(firstPoint.x, endY); + context.lineTo(firstPoint.x, firstPoint.y); + } else { + var item = points[0]; + context.moveTo(item.x - eachSpacing / 2, item.y); + context.lineTo(item.x + eachSpacing / 2, item.y); + context.lineTo(item.x + eachSpacing / 2, endY); + context.lineTo(item.x - eachSpacing / 2, endY); + context.moveTo(item.x - eachSpacing / 2, item.y); + } + context.closePath(); + context.fill(); + context.setGlobalAlpha(1); + }); + + if (opts.dataPointShape !== false) { + var shape = config.dataPointShape[seriesIndex % config.dataPointShape.length]; + drawPointShape(points, eachSeries.color, shape, context); + } + }); + if (opts.dataLabel !== false && process === 1) { + series.forEach(function (eachSeries, seriesIndex) { + var data = eachSeries.data; + var points = getDataPoints(data, minRange, maxRange, xAxisPoints, eachSpacing, opts, config, process); + drawPointText(points, eachSeries, config, context); + }); + } + + context.restore(); + + return { + xAxisPoints: xAxisPoints, + calPoints: calPoints, + eachSpacing: eachSpacing + }; +} + +function drawLineDataPoints(series, opts, config, context) { + var process = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 1; + + var _calYAxisData3 = calYAxisData(series, opts, config), + ranges = _calYAxisData3.ranges; + + var _getXAxisPoints3 = getXAxisPoints(opts.categories, opts, config), + xAxisPoints = _getXAxisPoints3.xAxisPoints, + eachSpacing = _getXAxisPoints3.eachSpacing; + + var minRange = ranges.pop(); + var maxRange = ranges.shift(); + var calPoints = []; + + context.save(); + if (opts._scrollDistance_ && opts._scrollDistance_ !== 0 && opts.enableScroll === true) { + context.translate(opts._scrollDistance_, 0); + } + + if (opts.tooltip && opts.tooltip.textList && opts.tooltip.textList.length && process === 1) { + drawToolTipSplitLine(opts.tooltip.offset.x, opts, config, context); + } + + series.forEach(function (eachSeries, seriesIndex) { + var data = eachSeries.data; + var points = getDataPoints(data, minRange, maxRange, xAxisPoints, eachSpacing, opts, config, process); + calPoints.push(points); + var splitPointList = splitPoints(points); + + splitPointList.forEach(function (points, index) { + context.beginPath(); + context.setStrokeStyle(eachSeries.color); + context.setLineWidth(2); + if (points.length === 1) { + context.moveTo(points[0].x, points[0].y); + context.arc(points[0].x, points[0].y, 1, 0, 2 * Math.PI); + } else { + context.moveTo(points[0].x, points[0].y); + if (opts.extra.lineStyle === 'curve') { + points.forEach(function (item, index) { + if (index > 0) { + var ctrlPoint = createCurveControlPoints(points, index - 1); + context.bezierCurveTo(ctrlPoint.ctrA.x, ctrlPoint.ctrA.y, ctrlPoint.ctrB.x, ctrlPoint.ctrB.y, item.x, item.y); + } + }); + } else { + points.forEach(function (item, index) { + if (index > 0) { + context.lineTo(item.x, item.y); + } + }); + } + context.moveTo(points[0].x, points[0].y); + } + context.closePath(); + context.stroke(); + }); + + if (opts.dataPointShape !== false) { + var shape = config.dataPointShape[seriesIndex % config.dataPointShape.length]; + drawPointShape(points, eachSeries.color, shape, context); + } + }); + if (opts.dataLabel !== false && process === 1) { + series.forEach(function (eachSeries, seriesIndex) { + var data = eachSeries.data; + var points = getDataPoints(data, minRange, maxRange, xAxisPoints, eachSpacing, opts, config, process); + drawPointText(points, eachSeries, config, context); + }); + } + + context.restore(); + + return { + xAxisPoints: xAxisPoints, + calPoints: calPoints, + eachSpacing: eachSpacing + }; +} + +function drawToolTipBridge(opts, config, context, process) { + context.save(); + if (opts._scrollDistance_ && opts._scrollDistance_ !== 0 && opts.enableScroll === true) { + context.translate(opts._scrollDistance_, 0); + } + if (opts.tooltip && opts.tooltip.textList && opts.tooltip.textList.length && process === 1) { + drawToolTip(opts.tooltip.textList, opts.tooltip.offset, opts, config, context); + } + context.restore(); +} + +function drawXAxis(categories, opts, config, context) { + var _getXAxisPoints4 = getXAxisPoints(categories, opts, config), + xAxisPoints = _getXAxisPoints4.xAxisPoints, + startX = _getXAxisPoints4.startX, + endX = _getXAxisPoints4.endX, + eachSpacing = _getXAxisPoints4.eachSpacing; + + var startY = opts.height - config.padding - config.xAxisHeight - config.legendHeight; + var endY = startY + config.xAxisLineHeight; + + context.save(); + if (opts._scrollDistance_ && opts._scrollDistance_ !== 0) { + context.translate(opts._scrollDistance_, 0); + } + + context.beginPath(); + context.setStrokeStyle(opts.xAxis.gridColor || "#cccccc"); + + if (opts.xAxis.disableGrid !== true) { + if (opts.xAxis.type === 'calibration') { + xAxisPoints.forEach(function (item, index) { + if (index > 0) { + context.moveTo(item - eachSpacing / 2, startY); + context.lineTo(item - eachSpacing / 2, startY + 4); + } + }); + } else { + xAxisPoints.forEach(function (item, index) { + context.moveTo(item, startY); + context.lineTo(item, endY); + }); + } + } + context.closePath(); + context.stroke(); + + // 对X轴列表做抽稀处理 + var validWidth = opts.width - 2 * config.padding - config.yAxisWidth - config.yAxisTitleWidth; + var maxXAxisListLength = Math.min(categories.length, Math.ceil(validWidth / config.fontSize / 1.5)); + var ratio = Math.ceil(categories.length / maxXAxisListLength); + + categories = categories.map(function (item, index) { + return index % ratio !== 0 ? '' : item; + }); + + if (config._xAxisTextAngle_ === 0) { + context.beginPath(); + context.setFontSize(config.fontSize); + context.setFillStyle(opts.xAxis.fontColor || '#666666'); + categories.forEach(function (item, index) { + var offset = eachSpacing / 2 - measureText(item) / 2; + context.fillText(item, xAxisPoints[index] + offset, startY + config.fontSize + 5); + }); + context.closePath(); + context.stroke(); + } else { + categories.forEach(function (item, index) { + context.save(); + context.beginPath(); + context.setFontSize(config.fontSize); + context.setFillStyle(opts.xAxis.fontColor || '#666666'); + var textWidth = measureText(item); + var offset = eachSpacing / 2 - textWidth; + + var _calRotateTranslate = calRotateTranslate(xAxisPoints[index] + eachSpacing / 2, startY + config.fontSize / 2 + 5, opts.height), + transX = _calRotateTranslate.transX, + transY = _calRotateTranslate.transY; + + context.rotate(-1 * config._xAxisTextAngle_); + context.translate(transX, transY); + context.fillText(item, xAxisPoints[index] + offset, startY + config.fontSize + 5); + context.closePath(); + context.stroke(); + context.restore(); + }); + } + + context.restore(); +} + +function drawYAxisGrid(opts, config, context) { + var spacingValid = opts.height - 2 * config.padding - config.xAxisHeight - config.legendHeight; + var eachSpacing = Math.floor(spacingValid / config.yAxisSplit); + var yAxisTotalWidth = config.yAxisWidth + config.yAxisTitleWidth; + var startX = config.padding + yAxisTotalWidth; + var endX = opts.width - config.padding; + + var points = []; + for (var i = 0; i < config.yAxisSplit; i++) { + points.push(config.padding + eachSpacing * i); + } + points.push(config.padding + eachSpacing * config.yAxisSplit + 2); + + context.beginPath(); + context.setStrokeStyle(opts.yAxis.gridColor || "#cccccc"); + context.setLineWidth(1); + points.forEach(function (item, index) { + context.moveTo(startX, item); + context.lineTo(endX, item); + }); + context.closePath(); + context.stroke(); +} + +function drawYAxis(series, opts, config, context) { + if (opts.yAxis.disabled === true) { + return; + } + + var _calYAxisData4 = calYAxisData(series, opts, config), + rangesFormat = _calYAxisData4.rangesFormat; + + var yAxisTotalWidth = config.yAxisWidth + config.yAxisTitleWidth; + + var spacingValid = opts.height - 2 * config.padding - config.xAxisHeight - config.legendHeight; + var eachSpacing = Math.floor(spacingValid / config.yAxisSplit); + var startX = config.padding + yAxisTotalWidth; + var endX = opts.width - config.padding; + var endY = opts.height - config.padding - config.xAxisHeight - config.legendHeight; + + // set YAxis background + context.setFillStyle(opts.background || '#ffffff'); + if (opts._scrollDistance_ < 0) { + context.fillRect(0, 0, startX, endY + config.xAxisHeight + 5); + } + context.fillRect(endX, 0, opts.width, endY + config.xAxisHeight + 5); + + var points = []; + for (var i = 0; i <= config.yAxisSplit; i++) { + points.push(config.padding + eachSpacing * i); + } + + context.stroke(); + context.beginPath(); + context.setFontSize(config.fontSize); + context.setFillStyle(opts.yAxis.fontColor || '#666666'); + rangesFormat.forEach(function (item, index) { + var pos = points[index] ? points[index] : endY; + context.fillText(item, config.padding + config.yAxisTitleWidth, pos + config.fontSize / 2); + }); + context.closePath(); + context.stroke(); + + if (opts.yAxis.title) { + drawYAxisTitle(opts.yAxis.title, opts, config, context); + } +} + +function drawLegend(series, opts, config, context) { + if (!opts.legend) { + return; + } + // each legend shape width 15px + // the spacing between shape and text in each legend is the `padding` + // each legend spacing is the `padding` + // legend margin top `config.padding` + + var _calLegendData = calLegendData(series, opts, config), + legendList = _calLegendData.legendList; + + var padding = 5; + var marginTop = 8; + var shapeWidth = 15; + legendList.forEach(function (itemList, listIndex) { + var width = 0; + itemList.forEach(function (item) { + item.name = item.name || 'undefined'; + width += 3 * padding + measureText(item.name) + shapeWidth; + }); + var startX = (opts.width - width) / 2 + padding; + var startY = opts.height - config.padding - config.legendHeight + listIndex * (config.fontSize + marginTop) + padding + marginTop; + + context.setFontSize(config.fontSize); + itemList.forEach(function (item) { + switch (opts.type) { + case 'line': + context.beginPath(); + context.setLineWidth(1); + context.setStrokeStyle(item.color); + context.moveTo(startX - 2, startY + 5); + context.lineTo(startX + 17, startY + 5); + context.stroke(); + context.closePath(); + context.beginPath(); + context.setLineWidth(1); + context.setStrokeStyle('#ffffff'); + context.setFillStyle(item.color); + context.moveTo(startX + 7.5, startY + 5); + context.arc(startX + 7.5, startY + 5, 4, 0, 2 * Math.PI); + context.fill(); + context.stroke(); + context.closePath(); + break; + case 'pie': + case 'ring': + context.beginPath(); + context.setFillStyle(item.color); + context.moveTo(startX + 7.5, startY + 5); + context.arc(startX + 7.5, startY + 5, 7, 0, 2 * Math.PI); + context.closePath(); + context.fill(); + break; + default: + context.beginPath(); + context.setFillStyle(item.color); + context.moveTo(startX, startY); + context.rect(startX, startY, 15, 10); + context.closePath(); + context.fill(); + } + startX += padding + shapeWidth; + context.beginPath(); + context.setFillStyle(opts.extra.legendTextColor || '#333333'); + context.fillText(item.name, startX, startY + 9); + context.closePath(); + context.stroke(); + startX += measureText(item.name) + 2 * padding; + }); + }); +} +function drawPieDataPoints(series, opts, config, context) { + var process = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 1; + + var pieOption = opts.extra.pie || {}; + series = getPieDataPoints(series, process); + var centerPosition = { + x: opts.width / 2, + y: (opts.height - config.legendHeight) / 2 + }; + var radius = Math.min(centerPosition.x - config.pieChartLinePadding - config.pieChartTextPadding - config._pieTextMaxLength_, centerPosition.y - config.pieChartLinePadding - config.pieChartTextPadding); + if (opts.dataLabel) { + radius -= 10; + } else { + radius -= 2 * config.padding; + } + series = series.map(function (eachSeries) { + eachSeries._start_ += (pieOption.offsetAngle || 0) * Math.PI / 180; + return eachSeries; + }); + series.forEach(function (eachSeries) { + context.beginPath(); + context.setLineWidth(2); + context.setStrokeStyle('#ffffff'); + context.setFillStyle(eachSeries.color); + context.moveTo(centerPosition.x, centerPosition.y); + context.arc(centerPosition.x, centerPosition.y, radius, eachSeries._start_, eachSeries._start_ + 2 * eachSeries._proportion_ * Math.PI); + context.closePath(); + context.fill(); + if (opts.disablePieStroke !== true) { + context.stroke(); + } + }); + + if (opts.type === 'ring') { + var innerPieWidth = radius * 0.6; + if (typeof opts.extra.ringWidth === 'number' && opts.extra.ringWidth > 0) { + innerPieWidth = Math.max(0, radius - opts.extra.ringWidth); + } + context.beginPath(); + context.setFillStyle(opts.background || '#ffffff'); + context.moveTo(centerPosition.x, centerPosition.y); + context.arc(centerPosition.x, centerPosition.y, innerPieWidth, 0, 2 * Math.PI); + context.closePath(); + context.fill(); + } + + if (opts.dataLabel !== false && process === 1) { + // fix https://github.com/xiaolin3303/wx-charts/issues/132 + var valid = false; + for (var i = 0, len = series.length; i < len; i++) { + if (series[i].data > 0) { + valid = true; + break; + } + } + + if (valid) { + drawPieText(series, opts, config, context, radius, centerPosition); + } + } + + if (process === 1 && opts.type === 'ring') { + drawRingTitle(opts, config, context); + } + + return { + center: centerPosition, + radius: radius, + series: series + }; +} + +function drawRadarDataPoints(series, opts, config, context) { + var process = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 1; + + var radarOption = opts.extra.radar || {}; + var coordinateAngle = getRadarCoordinateSeries(opts.categories.length); + var centerPosition = { + x: opts.width / 2, + y: (opts.height - config.legendHeight) / 2 + }; + + var radius = Math.min(centerPosition.x - (getMaxTextListLength(opts.categories) + config.radarLabelTextMargin), centerPosition.y - config.radarLabelTextMargin); + + radius -= config.padding; + + // draw grid + context.beginPath(); + context.setLineWidth(1); + context.setStrokeStyle(radarOption.gridColor || "#cccccc"); + coordinateAngle.forEach(function (angle) { + var pos = convertCoordinateOrigin(radius * Math.cos(angle), radius * Math.sin(angle), centerPosition); + context.moveTo(centerPosition.x, centerPosition.y); + context.lineTo(pos.x, pos.y); + }); + context.stroke(); + context.closePath(); + + // draw split line grid + + var _loop = function _loop(i) { + var startPos = {}; + context.beginPath(); + context.setLineWidth(1); + context.setStrokeStyle(radarOption.gridColor || "#cccccc"); + coordinateAngle.forEach(function (angle, index) { + var pos = convertCoordinateOrigin(radius / config.radarGridCount * i * Math.cos(angle), radius / config.radarGridCount * i * Math.sin(angle), centerPosition); + if (index === 0) { + startPos = pos; + context.moveTo(pos.x, pos.y); + } else { + context.lineTo(pos.x, pos.y); + } + }); + context.lineTo(startPos.x, startPos.y); + context.stroke(); + context.closePath(); + }; + + for (var i = 1; i <= config.radarGridCount; i++) { + _loop(i); + } + + var radarDataPoints = getRadarDataPoints(coordinateAngle, centerPosition, radius, series, opts, process); + radarDataPoints.forEach(function (eachSeries, seriesIndex) { + // 绘制区域数据 + context.beginPath(); + context.setFillStyle(eachSeries.color); + context.setGlobalAlpha(0.6); + eachSeries.data.forEach(function (item, index) { + if (index === 0) { + context.moveTo(item.position.x, item.position.y); + } else { + context.lineTo(item.position.x, item.position.y); + } + }); + context.closePath(); + context.fill(); + context.setGlobalAlpha(1); + + if (opts.dataPointShape !== false) { + var shape = config.dataPointShape[seriesIndex % config.dataPointShape.length]; + var points = eachSeries.data.map(function (item) { + return item.position; + }); + drawPointShape(points, eachSeries.color, shape, context); + } + }); + // draw label text + drawRadarLabel(coordinateAngle, radius, centerPosition, opts, config, context); + + return { + center: centerPosition, + radius: radius, + angleList: coordinateAngle + }; +} + +function drawCanvas(opts, context) { + context.draw(); +} + +var Timing = { + easeIn: function easeIn(pos) { + return Math.pow(pos, 3); + }, + + easeOut: function easeOut(pos) { + return Math.pow(pos - 1, 3) + 1; + }, + + easeInOut: function easeInOut(pos) { + if ((pos /= 0.5) < 1) { + return 0.5 * Math.pow(pos, 3); + } else { + return 0.5 * (Math.pow(pos - 2, 3) + 2); + } + }, + + linear: function linear(pos) { + return pos; + } +}; + +function Animation(opts) { + this.isStop = false; + opts.duration = typeof opts.duration === 'undefined' ? 1000 : opts.duration; + opts.timing = opts.timing || 'linear'; + + var delay = 17; + + var createAnimationFrame = function createAnimationFrame() { + if (typeof requestAnimationFrame !== 'undefined') { + return requestAnimationFrame; + } else if (typeof setTimeout !== 'undefined') { + return function (step, delay) { + setTimeout(function () { + var timeStamp = +new Date(); + step(timeStamp); + }, delay); + }; + } else { + return function (step) { + step(null); + }; + } + }; + var animationFrame = createAnimationFrame(); + var startTimeStamp = null; + var _step = function step(timestamp) { + if (timestamp === null || this.isStop === true) { + opts.onProcess && opts.onProcess(1); + opts.onAnimationFinish && opts.onAnimationFinish(); + return; + } + if (startTimeStamp === null) { + startTimeStamp = timestamp; + } + if (timestamp - startTimeStamp < opts.duration) { + var process = (timestamp - startTimeStamp) / opts.duration; + var timingFunction = Timing[opts.timing]; + process = timingFunction(process); + opts.onProcess && opts.onProcess(process); + animationFrame(_step, delay); + } else { + opts.onProcess && opts.onProcess(1); + opts.onAnimationFinish && opts.onAnimationFinish(); + } + }; + _step = _step.bind(this); + + animationFrame(_step, delay); +} + +// stop animation immediately +// and tigger onAnimationFinish +Animation.prototype.stop = function () { + this.isStop = true; +}; + +function drawCharts(type, opts, config, context) { + var _this = this; + + var series = opts.series; + var categories = opts.categories; + series = fillSeriesColor(series, config); + + var _calLegendData = calLegendData(series, opts, config), + legendHeight = _calLegendData.legendHeight; + + config.legendHeight = legendHeight; + + var _calYAxisData = calYAxisData(series, opts, config), + yAxisWidth = _calYAxisData.yAxisWidth; + + config.yAxisWidth = yAxisWidth; + if (categories && categories.length) { + var _calCategoriesData = calCategoriesData(categories, opts, config), + xAxisHeight = _calCategoriesData.xAxisHeight, + angle = _calCategoriesData.angle; + + config.xAxisHeight = xAxisHeight; + config._xAxisTextAngle_ = angle; + } + if (type === 'pie' || type === 'ring') { + config._pieTextMaxLength_ = opts.dataLabel === false ? 0 : getPieTextMaxLength(series); + } + + var duration = opts.animation ? 1000 : 0; + this.animationInstance && this.animationInstance.stop(); + switch (type) { + case 'line': + this.animationInstance = new Animation({ + timing: 'easeIn', + duration: duration, + onProcess: function onProcess(process) { + drawYAxisGrid(opts, config, context); + + var _drawLineDataPoints = drawLineDataPoints(series, opts, config, context, process), + xAxisPoints = _drawLineDataPoints.xAxisPoints, + calPoints = _drawLineDataPoints.calPoints, + eachSpacing = _drawLineDataPoints.eachSpacing; + + _this.chartData.xAxisPoints = xAxisPoints; + _this.chartData.calPoints = calPoints; + _this.chartData.eachSpacing = eachSpacing; + drawXAxis(categories, opts, config, context); + drawLegend(opts.series, opts, config, context); + drawYAxis(series, opts, config, context); + drawToolTipBridge(opts, config, context, process); + drawCanvas(opts, context); + }, + onAnimationFinish: function onAnimationFinish() { + _this.event.trigger('renderComplete'); + } + }); + break; + case 'column': + this.animationInstance = new Animation({ + timing: 'easeIn', + duration: duration, + onProcess: function onProcess(process) { + drawYAxisGrid(opts, config, context); + + var _drawColumnDataPoints = drawColumnDataPoints(series, opts, config, context, process), + xAxisPoints = _drawColumnDataPoints.xAxisPoints, + eachSpacing = _drawColumnDataPoints.eachSpacing; + + _this.chartData.xAxisPoints = xAxisPoints; + _this.chartData.eachSpacing = eachSpacing; + drawXAxis(categories, opts, config, context); + drawLegend(opts.series, opts, config, context); + drawYAxis(series, opts, config, context); + drawCanvas(opts, context); + }, + onAnimationFinish: function onAnimationFinish() { + _this.event.trigger('renderComplete'); + } + }); + break; + case 'area': + this.animationInstance = new Animation({ + timing: 'easeIn', + duration: duration, + onProcess: function onProcess(process) { + drawYAxisGrid(opts, config, context); + + var _drawAreaDataPoints = drawAreaDataPoints(series, opts, config, context, process), + xAxisPoints = _drawAreaDataPoints.xAxisPoints, + calPoints = _drawAreaDataPoints.calPoints, + eachSpacing = _drawAreaDataPoints.eachSpacing; + + _this.chartData.xAxisPoints = xAxisPoints; + _this.chartData.calPoints = calPoints; + _this.chartData.eachSpacing = eachSpacing; + drawXAxis(categories, opts, config, context); + drawLegend(opts.series, opts, config, context); + drawYAxis(series, opts, config, context); + drawToolTipBridge(opts, config, context, process); + drawCanvas(opts, context); + }, + onAnimationFinish: function onAnimationFinish() { + _this.event.trigger('renderComplete'); + } + }); + break; + case 'ring': + case 'pie': + this.animationInstance = new Animation({ + timing: 'easeInOut', + duration: duration, + onProcess: function onProcess(process) { + _this.chartData.pieData = drawPieDataPoints(series, opts, config, context, process); + drawLegend(opts.series, opts, config, context); + drawCanvas(opts, context); + }, + onAnimationFinish: function onAnimationFinish() { + _this.event.trigger('renderComplete'); + } + }); + break; + case 'radar': + this.animationInstance = new Animation({ + timing: 'easeInOut', + duration: duration, + onProcess: function onProcess(process) { + _this.chartData.radarData = drawRadarDataPoints(series, opts, config, context, process); + drawLegend(opts.series, opts, config, context); + drawCanvas(opts, context); + }, + onAnimationFinish: function onAnimationFinish() { + _this.event.trigger('renderComplete'); + } + }); + break; + } +} + +// simple event implement + +function Event() { + this.events = {}; +} + +Event.prototype.addEventListener = function (type, listener) { + this.events[type] = this.events[type] || []; + this.events[type].push(listener); +}; + +Event.prototype.trigger = function () { + for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) { + args[_key] = arguments[_key]; + } + + var type = args[0]; + var params = args.slice(1); + if (!!this.events[type]) { + this.events[type].forEach(function (listener) { + try { + listener.apply(null, params); + } catch (e) { + console.error(e); + } + }); + } +}; + +var Charts = function Charts(opts) { + opts.title = opts.title || {}; + opts.subtitle = opts.subtitle || {}; + opts.yAxis = opts.yAxis || {}; + opts.xAxis = opts.xAxis || {}; + opts.extra = opts.extra || {}; + opts.legend = opts.legend === false ? false : true; + opts.animation = opts.animation === false ? false : true; + var config$$1 = assign({}, config); + config$$1.yAxisTitleWidth = opts.yAxis.disabled !== true && opts.yAxis.title ? config$$1.yAxisTitleWidth : 0; + config$$1.pieChartLinePadding = opts.dataLabel === false ? 0 : config$$1.pieChartLinePadding; + config$$1.pieChartTextPadding = opts.dataLabel === false ? 0 : config$$1.pieChartTextPadding; + + this.opts = opts; + this.config = config$$1; + this.context = wx.createCanvasContext(opts.canvasId); + // store calcuated chart data + // such as chart point coordinate + this.chartData = {}; + this.event = new Event(); + this.scrollOption = { + currentOffset: 0, + startTouchX: 0, + distance: 0 + }; + + drawCharts.call(this, opts.type, opts, config$$1, this.context); +}; + +Charts.prototype.updateData = function () { + var data = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; + + this.opts.series = data.series || this.opts.series; + this.opts.categories = data.categories || this.opts.categories; + + this.opts.title = assign({}, this.opts.title, data.title || {}); + this.opts.subtitle = assign({}, this.opts.subtitle, data.subtitle || {}); + + drawCharts.call(this, this.opts.type, this.opts, this.config, this.context); +}; + +Charts.prototype.stopAnimation = function () { + this.animationInstance && this.animationInstance.stop(); +}; + +Charts.prototype.addEventListener = function (type, listener) { + this.event.addEventListener(type, listener); +}; + +Charts.prototype.getCurrentDataIndex = function (e) { + var touches = e.touches && e.touches.length ? e.touches : e.changedTouches; + if (touches && touches.length) { + var _touches$ = touches[0], + x = _touches$.x, + y = _touches$.y; + + if (this.opts.type === 'pie' || this.opts.type === 'ring') { + return findPieChartCurrentIndex({ x: x, y: y }, this.chartData.pieData); + } else if (this.opts.type === 'radar') { + return findRadarChartCurrentIndex({ x: x, y: y }, this.chartData.radarData, this.opts.categories.length); + } else { + return findCurrentIndex({ x: x, y: y }, this.chartData.xAxisPoints, this.opts, this.config, Math.abs(this.scrollOption.currentOffset)); + } + } + return -1; +}; + +Charts.prototype.showToolTip = function (e) { + var option = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; + + if (this.opts.type === 'line' || this.opts.type === 'area') { + var index = this.getCurrentDataIndex(e); + var currentOffset = this.scrollOption.currentOffset; + + var opts = assign({}, this.opts, { + _scrollDistance_: currentOffset, + animation: false + }); + if (index > -1) { + var seriesData = getSeriesDataItem(this.opts.series, index); + if (seriesData.length !== 0) { + var _getToolTipData = getToolTipData(seriesData, this.chartData.calPoints, index, this.opts.categories, option), + textList = _getToolTipData.textList, + offset = _getToolTipData.offset; + + opts.tooltip = { + textList: textList, + offset: offset, + option: option + }; + } + } + drawCharts.call(this, opts.type, opts, this.config, this.context); + } +}; + +Charts.prototype.scrollStart = function (e) { + if (e.touches[0] && this.opts.enableScroll === true) { + this.scrollOption.startTouchX = e.touches[0].x; + } +}; + +Charts.prototype.scroll = function (e) { + // TODO throtting... + if (e.touches[0] && this.opts.enableScroll === true) { + var _distance = e.touches[0].x - this.scrollOption.startTouchX; + var currentOffset = this.scrollOption.currentOffset; + + var validDistance = calValidDistance(currentOffset + _distance, this.chartData, this.config, this.opts); + + this.scrollOption.distance = _distance = validDistance - currentOffset; + var opts = assign({}, this.opts, { + _scrollDistance_: currentOffset + _distance, + animation: false + }); + + drawCharts.call(this, opts.type, opts, this.config, this.context); + } +}; + +Charts.prototype.scrollEnd = function (e) { + if (this.opts.enableScroll === true) { + var _scrollOption = this.scrollOption, + currentOffset = _scrollOption.currentOffset, + distance = _scrollOption.distance; + + this.scrollOption.currentOffset = currentOffset + distance; + this.scrollOption.distance = 0; + } +}; + +module.exports = Charts; \ No newline at end of file -- GitLab