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1
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+/*
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2
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+ * charts for WeChat small app v1.0
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3
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+ *
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4
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+ * https://github.com/xiaolin3303/wx-charts
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5
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+ * 2016-11-28
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6
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+ *
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7
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+ * Designed and built with all the love of Web
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+ */
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+
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10
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+'use strict';
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+
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+var config = {
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+ yAxisWidth: 15,
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+ yAxisSplit: 5,
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+ xAxisHeight: 15,
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+ xAxisLineHeight: 15,
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+ legendHeight: 15,
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+ yAxisTitleWidth: 15,
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+ padding: 12,
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+ columePadding: 3,
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+ fontSize: 10,
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+ dataPointShape: ['diamond', 'circle', 'triangle', 'rect'],
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+ colors: ['#6F39FF', '#FF76A5', '#EF344D', '#FFBB23', '#2092FF'],
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+ pieChartLinePadding: 25,
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+ pieChartTextPadding: 15,
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+ xAxisTextPadding: 3,
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+ titleColor: '#333333',
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+ titleFontSize: 20,
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+ subtitleColor: '#999999',
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+ subtitleFontSize: 15,
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+ toolTipPadding: 3,
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+ toolTipBackground: '#000000',
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+ toolTipOpacity: 0.7,
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+ toolTipLineHeight: 14,
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+};
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+
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37
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+// Object.assign polyfill
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38
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+// https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
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39
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+function assign(target, varArgs) {
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40
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+ if (target == null) {
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41
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+ // TypeError if undefined or null
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+ throw new TypeError('Cannot convert undefined or null to object');
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+ }
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+
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+ var to = Object(target);
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+
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+ for (var index = 1; index < arguments.length; index++) {
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+ var nextSource = arguments[index];
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+
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+ if (nextSource != null) {
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51
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+ // Skip over if undefined or null
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+ for (var nextKey in nextSource) {
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+ // Avoid bugs when hasOwnProperty is shadowed
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+ if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
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+ to[nextKey] = nextSource[nextKey];
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+ }
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+ }
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+ }
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+ }
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+ return to;
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+}
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+
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+var util = {
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+ toFixed: function toFixed(num, limit) {
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+ limit = limit || 2;
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+ if (this.isFloat(num)) {
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+ num = num.toFixed(limit);
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+ }
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+ return num;
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+ },
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+ isFloat: function isFloat(num) {
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+ return num % 1 !== 0;
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+ },
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+ approximatelyEqual: function approximatelyEqual(num1, num2) {
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+ return Math.abs(num1 - num2) < 1e-10;
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+ },
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+ isSameSign: function isSameSign(num1, num2) {
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+ return Math.abs(num1) === num1 && Math.abs(num2) === num2 || Math.abs(num1) !== num1 && Math.abs(num2) !== num2;
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+ },
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+ isSameXCoordinateArea: function isSameXCoordinateArea(p1, p2) {
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+ return this.isSameSign(p1.x, p2.x);
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+ },
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+ isCollision: function isCollision(obj1, obj2) {
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+ obj1.end = {};
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+ obj1.end.x = obj1.start.x + obj1.width;
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+ obj1.end.y = obj1.start.y - obj1.height;
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+ obj2.end = {};
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+ obj2.end.x = obj2.start.x + obj2.width;
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+ obj2.end.y = obj2.start.y - obj2.height;
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+ 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;
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+
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+ return !flag;
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+ }
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+};
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+
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+function findRange(num, type, limit) {
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+ if (isNaN(num)) {
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+ throw new Error('[wxCharts] unvalid series data!');
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+ }
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+ limit = limit || 10;
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+ type = type ? type : 'upper';
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+ var multiple = 1;
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+ while (limit < 1) {
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+ limit *= 10;
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+ multiple *= 10;
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+ }
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+ if (type === 'upper') {
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+ num = Math.ceil(num * multiple);
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+ } else {
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+ num = Math.floor(num * multiple);
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+ }
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+ while (num % limit !== 0) {
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+ if (type === 'upper') {
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+ num++;
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+ } else {
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+ num--;
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+ }
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+ }
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+
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+ return num / multiple;
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+}
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+
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+function calValidDistance(distance, chartData, config, opts) {
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+
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+ var dataChartAreaWidth = opts.width - config.padding - chartData.xAxisPoints[0];
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+ var dataChartWidth = chartData.eachSpacing * opts.categories.length;
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+ var validDistance = distance;
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+ if (distance >= 0) {
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+ validDistance = 0;
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+ } else if (Math.abs(distance) >= dataChartWidth - dataChartAreaWidth) {
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+ validDistance = dataChartAreaWidth - dataChartWidth;
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+ }
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+ return validDistance;
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+}
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+
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+function isInAngleRange(angle, startAngle, endAngle) {
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+ function adjust(angle) {
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+ while (angle < 0) {
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+ angle += 2 * Math.PI;
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+ }
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+ while (angle > 2 * Math.PI) {
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+ angle -= 2 * Math.PI;
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+ }
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+
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+ return angle;
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+ }
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+
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+ angle = adjust(angle);
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+ startAngle = adjust(startAngle);
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+ endAngle = adjust(endAngle);
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+ if (startAngle > endAngle) {
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+ endAngle += 2 * Math.PI;
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+ if (angle < startAngle) {
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+ angle += 2 * Math.PI;
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+ }
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+ }
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+
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+ return angle >= startAngle && angle <= endAngle;
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+}
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+
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161
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+function calRotateTranslate(x, y, h) {
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+ var xv = x;
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+ var yv = h - y;
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+
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+ var transX = xv + (h - yv - xv) / Math.sqrt(2);
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+ transX *= -1;
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+
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+ var transY = (h - yv) * (Math.sqrt(2) - 1) - (h - yv - xv) / Math.sqrt(2);
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+
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+ return {
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+ transX: transX,
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+ transY: transY
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+ };
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+}
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+
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176
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+function createCurveControlPoints(points, i) {
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+
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+ function isNotMiddlePoint(points, i) {
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+ if (points[i - 1] && points[i + 1]) {
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+ 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);
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181
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+ } else {
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+ return false;
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+ }
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+ }
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+
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+ var a = 0.2;
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+ var b = 0.2;
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+ var pAx = null;
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189
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+ var pAy = null;
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+ var pBx = null;
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+ var pBy = null;
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192
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+ if (i < 1) {
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+ pAx = points[0].x + (points[1].x - points[0].x) * a;
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+ pAy = points[0].y + (points[1].y - points[0].y) * a;
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195
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+ } else {
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+ pAx = points[i].x + (points[i + 1].x - points[i - 1].x) * a;
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+ pAy = points[i].y + (points[i + 1].y - points[i - 1].y) * a;
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198
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+ }
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199
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+
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200
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+ if (i > points.length - 3) {
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201
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+ var last = points.length - 1;
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202
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+ pBx = points[last].x - (points[last].x - points[last - 1].x) * b;
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203
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+ pBy = points[last].y - (points[last].y - points[last - 1].y) * b;
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204
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+ } else {
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205
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+ pBx = points[i + 1].x - (points[i + 2].x - points[i].x) * b;
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206
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+ pBy = points[i + 1].y - (points[i + 2].y - points[i].y) * b;
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207
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+ }
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208
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+
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209
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+ // fix issue https://github.com/xiaolin3303/wx-charts/issues/79
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210
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+ if (isNotMiddlePoint(points, i + 1)) {
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211
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+ pBy = points[i + 1].y;
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212
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+ }
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213
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+ if (isNotMiddlePoint(points, i)) {
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214
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+ pAy = points[i].y;
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215
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+ }
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216
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+
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217
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+ return {
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218
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+ ctrA: {
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219
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+ x: pAx,
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220
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+ y: pAy
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221
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+ },
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222
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+ ctrB: {
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223
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+ x: pBx,
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224
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+ y: pBy
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225
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+ }
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226
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+ };
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227
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+}
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228
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+
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229
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+function convertCoordinateOrigin(x, y, center) {
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230
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+ return {
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231
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+ x: center.x + x,
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232
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+ y: center.y - y
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233
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+ };
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234
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+}
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235
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+
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236
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+function avoidCollision(obj, target) {
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237
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+ if (target) {
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238
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+ // is collision test
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239
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+ while (util.isCollision(obj, target)) {
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240
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+ if (obj.start.x > 0) {
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241
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+ obj.start.y--;
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242
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+ } else if (obj.start.x < 0) {
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243
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+ obj.start.y++;
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244
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+ } else {
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245
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+ if (obj.start.y > 0) {
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246
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+ obj.start.y++;
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247
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+ } else {
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248
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+ obj.start.y--;
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249
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+ }
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250
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+ }
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251
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+ }
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252
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+ }
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253
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+ return obj;
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254
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+}
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255
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+
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256
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+function fillSeriesColor(series, config) {
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257
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+ var index = 0;
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258
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+ return series.map(function(item) {
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259
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+ if (!item.color) {
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260
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+ item.color = config.colors[index];
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261
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+ index = (index + 1) % config.colors.length;
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262
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+ }
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263
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+ return item;
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264
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+ });
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265
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+}
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266
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+
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267
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+function getDataRange(minData, maxData) {
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268
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+ var limit = 0;
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269
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+ var range = maxData - minData;
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270
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+ if (range >= 10000) {
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271
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+ limit = 1000;
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272
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+ } else if (range >= 1000) {
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273
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+ limit = 100;
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274
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+ } else if (range >= 100) {
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275
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+ limit = 10;
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276
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+ } else if (range >= 10) {
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277
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+ limit = 5;
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278
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+ } else if (range >= 1) {
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279
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+ limit = 1;
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280
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+ } else if (range >= 0.1) {
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281
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+ limit = 0.1;
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282
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+ } else {
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283
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+ limit = 0.01;
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284
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+ }
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285
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+ return {
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286
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+ minRange: findRange(minData, 'lower', limit),
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287
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+ maxRange: findRange(maxData, 'upper', limit)
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288
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+ };
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289
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+}
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|
|
290
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+
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291
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+function measureText(text) {
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292
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+ var fontSize = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 10;
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293
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+
|
|
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294
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+ // wx canvas 未实现measureText方法, 此处自行实现
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295
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+ text = String(text);
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296
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+ var text = text.split('');
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297
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+ var width = 0;
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298
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+ text.forEach(function(item) {
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299
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+ if (/[a-zA-Z]/.test(item)) {
|
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300
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+ width += 7;
|
|
|
301
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+ } else if (/[0-9]/.test(item)) {
|
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302
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+ width += 5.5;
|
|
|
303
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+ } else if (/\./.test(item)) {
|
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304
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+ width += 2.7;
|
|
|
305
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+ } else if (/-/.test(item)) {
|
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306
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+ width += 3.25;
|
|
|
307
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+ } else if (/[\u4e00-\u9fa5]/.test(item)) {
|
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308
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+ width += 10;
|
|
|
309
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+ } else if (/\(|\)/.test(item)) {
|
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310
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+ width += 3.73;
|
|
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311
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+ } else if (/\s/.test(item)) {
|
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|
312
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+ width += 2.5;
|
|
|
313
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+ } else if (/%/.test(item)) {
|
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314
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+ width += 8;
|
|
|
315
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+ } else {
|
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|
316
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+ width += 10;
|
|
|
317
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+ }
|
|
|
318
|
+ });
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|
|
319
|
+ return width * fontSize / 10;
|
|
|
320
|
+}
|
|
|
321
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+
|
|
|
322
|
+function dataCombine(series) {
|
|
|
323
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+ return series.reduce(function(a, b) {
|
|
|
324
|
+ return (a.data ? a.data : a).concat(b.data);
|
|
|
325
|
+ }, []);
|
|
|
326
|
+}
|
|
|
327
|
+
|
|
|
328
|
+function getSeriesDataItem(series, index) {
|
|
|
329
|
+ var data = [];
|
|
|
330
|
+ series.forEach(function(item) {
|
|
|
331
|
+ if (item.data[index] !== null && typeof item.data[index] !== 'undefinded') {
|
|
|
332
|
+ var seriesItem = {};
|
|
|
333
|
+ seriesItem.color = item.color;
|
|
|
334
|
+ seriesItem.name = item.name;
|
|
|
335
|
+ seriesItem.data = item.format ? item.format(item.data[index]) : item.data[index];
|
|
|
336
|
+ data.push(seriesItem);
|
|
|
337
|
+ }
|
|
|
338
|
+ });
|
|
|
339
|
+
|
|
|
340
|
+ return data;
|
|
|
341
|
+}
|
|
|
342
|
+
|
|
|
343
|
+
|
|
|
344
|
+
|
|
|
345
|
+function getMaxTextListLength(list) {
|
|
|
346
|
+ var lengthList = list.map(function(item) {
|
|
|
347
|
+ return measureText(item);
|
|
|
348
|
+ });
|
|
|
349
|
+ return Math.max.apply(null, lengthList);
|
|
|
350
|
+}
|
|
|
351
|
+
|
|
|
352
|
+function getToolTipData(seriesData, calPoints, index, categories) {
|
|
|
353
|
+ var option = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {};
|
|
|
354
|
+
|
|
|
355
|
+ var textList = seriesData.map(function(item) {
|
|
|
356
|
+ return {
|
|
|
357
|
+ text: option.format ? option.format(item, categories[index]) : item.name + ': ' + item.data,
|
|
|
358
|
+ color: item.color
|
|
|
359
|
+ };
|
|
|
360
|
+ });
|
|
|
361
|
+ var validCalPoints = [];
|
|
|
362
|
+ var offset = {
|
|
|
363
|
+ x: 0,
|
|
|
364
|
+ y: 0
|
|
|
365
|
+ };
|
|
|
366
|
+ calPoints.forEach(function(points) {
|
|
|
367
|
+ if (typeof points[index] !== 'undefinded' && points[index] !== null) {
|
|
|
368
|
+ validCalPoints.push(points[index]);
|
|
|
369
|
+ }
|
|
|
370
|
+ });
|
|
|
371
|
+ validCalPoints.forEach(function(item) {
|
|
|
372
|
+ offset.x = Math.round(item.x);
|
|
|
373
|
+ offset.y += item.y;
|
|
|
374
|
+ });
|
|
|
375
|
+
|
|
|
376
|
+ offset.y /= validCalPoints.length;
|
|
|
377
|
+ return {
|
|
|
378
|
+ textList: textList,
|
|
|
379
|
+ offset: offset
|
|
|
380
|
+ };
|
|
|
381
|
+}
|
|
|
382
|
+
|
|
|
383
|
+function findCurrentIndex(currentPoints, xAxisPoints, opts, config) {
|
|
|
384
|
+ var offset = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0;
|
|
|
385
|
+
|
|
|
386
|
+ var currentIndex = -1;
|
|
|
387
|
+ if (isInExactChartArea(currentPoints, opts, config)) {
|
|
|
388
|
+ xAxisPoints.forEach(function(item, index) {
|
|
|
389
|
+ if (currentPoints.x + offset > item) {
|
|
|
390
|
+ currentIndex = index;
|
|
|
391
|
+ }
|
|
|
392
|
+ });
|
|
|
393
|
+ }
|
|
|
394
|
+
|
|
|
395
|
+ return currentIndex;
|
|
|
396
|
+}
|
|
|
397
|
+
|
|
|
398
|
+function isInExactChartArea(currentPoints, opts, config) {
|
|
|
399
|
+ 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;
|
|
|
400
|
+}
|
|
|
401
|
+
|
|
|
402
|
+function findPieChartCurrentIndex(currentPoints, pieData) {
|
|
|
403
|
+ var currentIndex = -1;
|
|
|
404
|
+ if (isInExactPieChartArea(currentPoints, pieData.center, pieData.radius)) {
|
|
|
405
|
+ var angle = Math.atan2(pieData.center.y - currentPoints.y, currentPoints.x - pieData.center.x);
|
|
|
406
|
+ angle = -angle;
|
|
|
407
|
+ for (var i = 0, len = pieData.series.length; i < len; i++) {
|
|
|
408
|
+ var item = pieData.series[i];
|
|
|
409
|
+ if (isInAngleRange(angle, item._start_, item._start_ + item._proportion_ * 2 * Math.PI)) {
|
|
|
410
|
+ currentIndex = i;
|
|
|
411
|
+ break;
|
|
|
412
|
+ }
|
|
|
413
|
+ }
|
|
|
414
|
+ }
|
|
|
415
|
+
|
|
|
416
|
+ return currentIndex;
|
|
|
417
|
+}
|
|
|
418
|
+
|
|
|
419
|
+function isInExactPieChartArea(currentPoints, center, radius) {
|
|
|
420
|
+ return Math.pow(currentPoints.x - center.x, 2) + Math.pow(currentPoints.y - center.y, 2) <= Math.pow(radius, 2);
|
|
|
421
|
+}
|
|
|
422
|
+
|
|
|
423
|
+function splitPoints(points) {
|
|
|
424
|
+ var newPoints = [];
|
|
|
425
|
+ var items = [];
|
|
|
426
|
+ points.forEach(function(item, index) {
|
|
|
427
|
+ if (item !== null) {
|
|
|
428
|
+ items.push(item);
|
|
|
429
|
+ } else {
|
|
|
430
|
+ if (items.length) {
|
|
|
431
|
+ newPoints.push(items);
|
|
|
432
|
+ }
|
|
|
433
|
+ items = [];
|
|
|
434
|
+ }
|
|
|
435
|
+ });
|
|
|
436
|
+ if (items.length) {
|
|
|
437
|
+ newPoints.push(items);
|
|
|
438
|
+ }
|
|
|
439
|
+
|
|
|
440
|
+ return newPoints;
|
|
|
441
|
+}
|
|
|
442
|
+
|
|
|
443
|
+function calLegendData(series, opts, config) {
|
|
|
444
|
+ if (opts.legend === false) {
|
|
|
445
|
+ return {
|
|
|
446
|
+ legendList: [],
|
|
|
447
|
+ legendHeight: 0
|
|
|
448
|
+ };
|
|
|
449
|
+ }
|
|
|
450
|
+ var padding = 5;
|
|
|
451
|
+ var marginTop = 8;
|
|
|
452
|
+ var shapeWidth = 15;
|
|
|
453
|
+ var legendList = [];
|
|
|
454
|
+ var widthCount = 0;
|
|
|
455
|
+ var currentRow = [];
|
|
|
456
|
+ series.forEach(function(item) {
|
|
|
457
|
+ var itemWidth = 3 * padding + shapeWidth + measureText(item.name || 'undefinded');
|
|
|
458
|
+ if (widthCount + itemWidth > opts.width) {
|
|
|
459
|
+ legendList.push(currentRow);
|
|
|
460
|
+ widthCount = itemWidth;
|
|
|
461
|
+ currentRow = [item];
|
|
|
462
|
+ } else {
|
|
|
463
|
+ widthCount += itemWidth;
|
|
|
464
|
+ currentRow.push(item);
|
|
|
465
|
+ }
|
|
|
466
|
+ });
|
|
|
467
|
+ if (currentRow.length) {
|
|
|
468
|
+ legendList.push(currentRow);
|
|
|
469
|
+ }
|
|
|
470
|
+
|
|
|
471
|
+ return {
|
|
|
472
|
+ legendList: legendList,
|
|
|
473
|
+ legendHeight: legendList.length * (config.fontSize + marginTop) + padding
|
|
|
474
|
+ };
|
|
|
475
|
+}
|
|
|
476
|
+
|
|
|
477
|
+function calCategoriesData(categories, opts, config) {
|
|
|
478
|
+ var result = {
|
|
|
479
|
+ angle: 0,
|
|
|
480
|
+ xAxisHeight: config.xAxisHeight
|
|
|
481
|
+ };
|
|
|
482
|
+
|
|
|
483
|
+ var _getXAxisPoints = getXAxisPoints(categories, opts, config),
|
|
|
484
|
+ eachSpacing = _getXAxisPoints.eachSpacing;
|
|
|
485
|
+
|
|
|
486
|
+ // get max length of categories text
|
|
|
487
|
+
|
|
|
488
|
+
|
|
|
489
|
+ var categoriesTextLenth = categories.map(function(item) {
|
|
|
490
|
+ return measureText(item);
|
|
|
491
|
+ });
|
|
|
492
|
+
|
|
|
493
|
+ var maxTextLength = Math.max.apply(this, categoriesTextLenth);
|
|
|
494
|
+
|
|
|
495
|
+ if (maxTextLength + 2 * config.xAxisTextPadding > eachSpacing) {
|
|
|
496
|
+ result.angle = 45 * Math.PI / 180;
|
|
|
497
|
+ result.xAxisHeight = 2 * config.xAxisTextPadding + maxTextLength * Math.sin(result.angle);
|
|
|
498
|
+ }
|
|
|
499
|
+
|
|
|
500
|
+ return result;
|
|
|
501
|
+}
|
|
|
502
|
+
|
|
|
503
|
+function getPieDataPoints(series) {
|
|
|
504
|
+ var process = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
|
|
|
505
|
+
|
|
|
506
|
+ var count = 0;
|
|
|
507
|
+ var _start_ = 0;
|
|
|
508
|
+ series.forEach(function(item) {
|
|
|
509
|
+ item.data = item.data === null ? 0 : item.data;
|
|
|
510
|
+ count += item.data;
|
|
|
511
|
+ });
|
|
|
512
|
+ series.forEach(function(item) {
|
|
|
513
|
+ item.data = item.data === null ? 0 : item.data;
|
|
|
514
|
+ item._proportion_ = item.data / count * process;
|
|
|
515
|
+ });
|
|
|
516
|
+ series.forEach(function(item) {
|
|
|
517
|
+ item._start_ = _start_;
|
|
|
518
|
+ _start_ += 2 * item._proportion_ * Math.PI;
|
|
|
519
|
+ });
|
|
|
520
|
+
|
|
|
521
|
+ return series;
|
|
|
522
|
+}
|
|
|
523
|
+
|
|
|
524
|
+function getPieTextMaxLength(series) {
|
|
|
525
|
+ series = getPieDataPoints(series);
|
|
|
526
|
+ var maxLength = 0;
|
|
|
527
|
+ series.forEach(function(item) {
|
|
|
528
|
+ var text = item.format ? item.format(+item._proportion_.toFixed(2)) : util.toFixed(item._proportion_ * 100) + '%';
|
|
|
529
|
+ maxLength = Math.max(maxLength, measureText(text));
|
|
|
530
|
+ });
|
|
|
531
|
+
|
|
|
532
|
+ return maxLength;
|
|
|
533
|
+}
|
|
|
534
|
+
|
|
|
535
|
+function fixColumeData(points, eachSpacing, columnLen, index, config, opts) {
|
|
|
536
|
+ return points.map(function(item) {
|
|
|
537
|
+ if (item === null) {
|
|
|
538
|
+ return null;
|
|
|
539
|
+ }
|
|
|
540
|
+ item.width = (eachSpacing - 2 * config.columePadding) / columnLen;
|
|
|
541
|
+
|
|
|
542
|
+ if (opts.extra.column && opts.extra.column.width && +opts.extra.column.width > 0) {
|
|
|
543
|
+ // customer column width
|
|
|
544
|
+ item.width = Math.min(item.width, +opts.extra.column.width);
|
|
|
545
|
+ } else {
|
|
|
546
|
+ // default width should less tran 25px
|
|
|
547
|
+ // don't ask me why, I don't know
|
|
|
548
|
+ item.width = Math.min(item.width, 25);
|
|
|
549
|
+ }
|
|
|
550
|
+ item.x += (index + 0.5 - columnLen / 2) * item.width;
|
|
|
551
|
+
|
|
|
552
|
+ return item;
|
|
|
553
|
+ });
|
|
|
554
|
+}
|
|
|
555
|
+
|
|
|
556
|
+function getXAxisPoints(categories, opts, config) {
|
|
|
557
|
+ var yAxisTotalWidth = config.yAxisWidth + config.yAxisTitleWidth;
|
|
|
558
|
+ var spacingValid = opts.width - 2 * config.padding - yAxisTotalWidth;
|
|
|
559
|
+ var dataCount = opts.enableScroll ? Math.min(5, categories.length) : categories.length;
|
|
|
560
|
+ var eachSpacing = spacingValid / dataCount;
|
|
|
561
|
+
|
|
|
562
|
+ var xAxisPoints = [];
|
|
|
563
|
+ var startX = config.padding + yAxisTotalWidth;
|
|
|
564
|
+ var endX = opts.width - config.padding;
|
|
|
565
|
+ categories.forEach(function(item, index) {
|
|
|
566
|
+ xAxisPoints.push(startX + index * eachSpacing);
|
|
|
567
|
+ });
|
|
|
568
|
+ if (opts.enableScroll === true) {
|
|
|
569
|
+ xAxisPoints.push(startX + categories.length * eachSpacing);
|
|
|
570
|
+ } else {
|
|
|
571
|
+ xAxisPoints.push(endX);
|
|
|
572
|
+ }
|
|
|
573
|
+
|
|
|
574
|
+ return {
|
|
|
575
|
+ xAxisPoints: xAxisPoints,
|
|
|
576
|
+ startX: startX,
|
|
|
577
|
+ endX: endX,
|
|
|
578
|
+ eachSpacing: eachSpacing
|
|
|
579
|
+ };
|
|
|
580
|
+}
|
|
|
581
|
+
|
|
|
582
|
+function getDataPoints(data, minRange, maxRange, xAxisPoints, eachSpacing, opts, config) {
|
|
|
583
|
+ var process = arguments.length > 7 && arguments[7] !== undefined ? arguments[7] : 1;
|
|
|
584
|
+
|
|
|
585
|
+ var points = [];
|
|
|
586
|
+ var validHeight = opts.height - 2 * config.padding - config.xAxisHeight - config.legendHeight;
|
|
|
587
|
+ data.forEach(function(item, index) {
|
|
|
588
|
+ if (item === null) {
|
|
|
589
|
+ points.push(null);
|
|
|
590
|
+ } else {
|
|
|
591
|
+ var point = {};
|
|
|
592
|
+ point.x = xAxisPoints[index] + Math.round(eachSpacing / 2);
|
|
|
593
|
+ var height = validHeight * (item - minRange) / (maxRange - minRange);
|
|
|
594
|
+ height *= process;
|
|
|
595
|
+ point.y = opts.height - config.xAxisHeight - config.legendHeight - Math.round(height) - config.padding;
|
|
|
596
|
+ points.push(point);
|
|
|
597
|
+ }
|
|
|
598
|
+ });
|
|
|
599
|
+
|
|
|
600
|
+ return points;
|
|
|
601
|
+}
|
|
|
602
|
+
|
|
|
603
|
+function getYAxisTextList(series, opts, config) {
|
|
|
604
|
+ var data = dataCombine(series);
|
|
|
605
|
+ // remove null from data
|
|
|
606
|
+ data = data.filter(function(item) {
|
|
|
607
|
+ return item !== null;
|
|
|
608
|
+ });
|
|
|
609
|
+ var minData = Math.min.apply(this, data);
|
|
|
610
|
+ var maxData = Math.max.apply(this, data);
|
|
|
611
|
+ if (typeof opts.yAxis.min === 'number') {
|
|
|
612
|
+ minData = Math.min(opts.yAxis.min, minData);
|
|
|
613
|
+ }
|
|
|
614
|
+ if (typeof opts.yAxis.max === 'number') {
|
|
|
615
|
+ maxData = Math.max(opts.yAxis.max, maxData);
|
|
|
616
|
+ }
|
|
|
617
|
+
|
|
|
618
|
+ // fix issue https://github.com/xiaolin3303/wx-charts/issues/9
|
|
|
619
|
+ if (minData === maxData) {
|
|
|
620
|
+ var rangeSpan = maxData || 1;
|
|
|
621
|
+ minData -= rangeSpan;
|
|
|
622
|
+ maxData += rangeSpan;
|
|
|
623
|
+ }
|
|
|
624
|
+
|
|
|
625
|
+ var dataRange = getDataRange(minData, maxData);
|
|
|
626
|
+ var minRange = dataRange.minRange;
|
|
|
627
|
+ var maxRange = dataRange.maxRange;
|
|
|
628
|
+
|
|
|
629
|
+ var range = [];
|
|
|
630
|
+ var eachRange = (maxRange - minRange) / config.yAxisSplit;
|
|
|
631
|
+
|
|
|
632
|
+ for (var i = 0; i <= config.yAxisSplit; i++) {
|
|
|
633
|
+ range.push(minRange + eachRange * i);
|
|
|
634
|
+ }
|
|
|
635
|
+ return range.reverse();
|
|
|
636
|
+}
|
|
|
637
|
+
|
|
|
638
|
+function calYAxisData(series, opts, config) {
|
|
|
639
|
+
|
|
|
640
|
+ var ranges = getYAxisTextList(series, opts, config);
|
|
|
641
|
+ var yAxisWidth = config.yAxisWidth;
|
|
|
642
|
+ var rangesFormat = ranges.map(function(item) {
|
|
|
643
|
+ item = util.toFixed(item, 2);
|
|
|
644
|
+ item = opts.yAxis.format ? opts.yAxis.format(Number(item)) : item;
|
|
|
645
|
+ yAxisWidth = Math.max(yAxisWidth, measureText(item) + 5);
|
|
|
646
|
+ return item;
|
|
|
647
|
+ });
|
|
|
648
|
+ if (opts.yAxis.disabled === true) {
|
|
|
649
|
+ yAxisWidth = 0;
|
|
|
650
|
+ }
|
|
|
651
|
+
|
|
|
652
|
+ return {
|
|
|
653
|
+ rangesFormat: rangesFormat,
|
|
|
654
|
+ ranges: ranges,
|
|
|
655
|
+ yAxisWidth: yAxisWidth
|
|
|
656
|
+ };
|
|
|
657
|
+}
|
|
|
658
|
+
|
|
|
659
|
+function drawPointShape(points, color, shape, context) {
|
|
|
660
|
+ context.beginPath();
|
|
|
661
|
+ context.setStrokeStyle("#ffffff");
|
|
|
662
|
+ context.setLineWidth(1);
|
|
|
663
|
+ context.setFillStyle(color);
|
|
|
664
|
+
|
|
|
665
|
+ if (shape === 'diamond') {
|
|
|
666
|
+ points.forEach(function(item, index) {
|
|
|
667
|
+ if (item !== null) {
|
|
|
668
|
+ context.moveTo(item.x, item.y - 4.5);
|
|
|
669
|
+ context.lineTo(item.x - 4.5, item.y);
|
|
|
670
|
+ context.lineTo(item.x, item.y + 4.5);
|
|
|
671
|
+ context.lineTo(item.x + 4.5, item.y);
|
|
|
672
|
+ context.lineTo(item.x, item.y - 4.5);
|
|
|
673
|
+ }
|
|
|
674
|
+ });
|
|
|
675
|
+ } else if (shape === 'circle') {
|
|
|
676
|
+ points.forEach(function(item, index) {
|
|
|
677
|
+ if (item !== null) {
|
|
|
678
|
+ context.moveTo(item.x + 3.5, item.y);
|
|
|
679
|
+ context.arc(item.x, item.y, 4, 0, 2 * Math.PI, false);
|
|
|
680
|
+ }
|
|
|
681
|
+ });
|
|
|
682
|
+ } else if (shape === 'rect') {
|
|
|
683
|
+ points.forEach(function(item, index) {
|
|
|
684
|
+ if (item !== null) {
|
|
|
685
|
+ context.moveTo(item.x - 3.5, item.y - 3.5);
|
|
|
686
|
+ context.rect(item.x - 3.5, item.y - 3.5, 7, 7);
|
|
|
687
|
+ }
|
|
|
688
|
+ });
|
|
|
689
|
+ } else if (shape === 'triangle') {
|
|
|
690
|
+ points.forEach(function(item, index) {
|
|
|
691
|
+ if (item !== null) {
|
|
|
692
|
+ context.moveTo(item.x, item.y - 4.5);
|
|
|
693
|
+ context.lineTo(item.x - 4.5, item.y + 4.5);
|
|
|
694
|
+ context.lineTo(item.x + 4.5, item.y + 4.5);
|
|
|
695
|
+ context.lineTo(item.x, item.y - 4.5);
|
|
|
696
|
+ }
|
|
|
697
|
+ });
|
|
|
698
|
+ }
|
|
|
699
|
+ context.closePath();
|
|
|
700
|
+ context.fill();
|
|
|
701
|
+ context.stroke();
|
|
|
702
|
+}
|
|
|
703
|
+
|
|
|
704
|
+
|
|
|
705
|
+function drawPointText(points, series, config, context) {
|
|
|
706
|
+ // 绘制数据文案
|
|
|
707
|
+ var data = series.data;
|
|
|
708
|
+
|
|
|
709
|
+ context.beginPath();
|
|
|
710
|
+ context.setFontSize(config.fontSize);
|
|
|
711
|
+ context.setFillStyle('#666666');
|
|
|
712
|
+ points.forEach(function(item, index) {
|
|
|
713
|
+ if (item !== null) {
|
|
|
714
|
+ var formatVal = series.format ? series.format(data[index]) : data[index];
|
|
|
715
|
+ context.fillText(formatVal, item.x - measureText(formatVal) / 2, item.y - 2);
|
|
|
716
|
+ }
|
|
|
717
|
+ });
|
|
|
718
|
+ context.closePath();
|
|
|
719
|
+ context.stroke();
|
|
|
720
|
+}
|
|
|
721
|
+
|
|
|
722
|
+function drawPieText(series, opts, config, context, radius, center) {
|
|
|
723
|
+ var lineRadius = radius + config.pieChartLinePadding;
|
|
|
724
|
+ var textObjectCollection = [];
|
|
|
725
|
+ var lastTextObject = null;
|
|
|
726
|
+
|
|
|
727
|
+ var seriesConvert = series.map(function(item) {
|
|
|
728
|
+ var arc = 2 * Math.PI - (item._start_ + 2 * Math.PI * item._proportion_ / 2);
|
|
|
729
|
+ // var text = item.format ? item.format(+item._proportion_.toFixed(2)) : util.toFixed(item._proportion_ * 100) + '%';
|
|
|
730
|
+ var text = item.data.toFixed(2);
|
|
|
731
|
+ var color = item.color;
|
|
|
732
|
+ return {
|
|
|
733
|
+ arc: arc,
|
|
|
734
|
+ text: text ,
|
|
|
735
|
+ color: color
|
|
|
736
|
+ };
|
|
|
737
|
+ });
|
|
|
738
|
+ seriesConvert.forEach(function(item) {
|
|
|
739
|
+ // line end
|
|
|
740
|
+ var orginX1 = Math.cos(item.arc) * lineRadius;
|
|
|
741
|
+ var orginY1 = Math.sin(item.arc) * lineRadius;
|
|
|
742
|
+
|
|
|
743
|
+ // line start
|
|
|
744
|
+ var orginX2 = Math.cos(item.arc) * radius;
|
|
|
745
|
+ var orginY2 = Math.sin(item.arc) * radius;
|
|
|
746
|
+
|
|
|
747
|
+ // text start
|
|
|
748
|
+ var orginX3 = orginX1 >= 0 ? orginX1 + config.pieChartTextPadding : orginX1 - config.pieChartTextPadding;
|
|
|
749
|
+ var orginY3 = orginY1;
|
|
|
750
|
+
|
|
|
751
|
+ var textWidth = measureText(item.text);
|
|
|
752
|
+ var startY = orginY3;
|
|
|
753
|
+
|
|
|
754
|
+ if (lastTextObject && util.isSameXCoordinateArea(lastTextObject.start, {
|
|
|
755
|
+ x: orginX3
|
|
|
756
|
+ })) {
|
|
|
757
|
+ if (orginX3 > 0) {
|
|
|
758
|
+ startY = Math.min(orginY3, lastTextObject.start.y);
|
|
|
759
|
+ } else if (orginX1 < 0) {
|
|
|
760
|
+ startY = Math.max(orginY3, lastTextObject.start.y);
|
|
|
761
|
+ } else {
|
|
|
762
|
+ if (orginY3 > 0) {
|
|
|
763
|
+ startY = Math.max(orginY3, lastTextObject.start.y);
|
|
|
764
|
+ } else {
|
|
|
765
|
+ startY = Math.min(orginY3, lastTextObject.start.y);
|
|
|
766
|
+ }
|
|
|
767
|
+ }
|
|
|
768
|
+ }
|
|
|
769
|
+
|
|
|
770
|
+ if (orginX3 < 0) {
|
|
|
771
|
+ orginX3 -= textWidth;
|
|
|
772
|
+ }
|
|
|
773
|
+
|
|
|
774
|
+ var textObject = {
|
|
|
775
|
+ lineStart: {
|
|
|
776
|
+ x: orginX2,
|
|
|
777
|
+ y: orginY2
|
|
|
778
|
+ },
|
|
|
779
|
+ lineEnd: {
|
|
|
780
|
+ x: orginX1,
|
|
|
781
|
+ y: orginY1
|
|
|
782
|
+ },
|
|
|
783
|
+ start: {
|
|
|
784
|
+ x: orginX3,
|
|
|
785
|
+ y: startY
|
|
|
786
|
+ },
|
|
|
787
|
+ width: textWidth,
|
|
|
788
|
+ height: config.fontSize,
|
|
|
789
|
+ text: item.text,
|
|
|
790
|
+ color: item.color
|
|
|
791
|
+ };
|
|
|
792
|
+
|
|
|
793
|
+ lastTextObject = avoidCollision(textObject, lastTextObject);
|
|
|
794
|
+ textObjectCollection.push(lastTextObject);
|
|
|
795
|
+ });
|
|
|
796
|
+
|
|
|
797
|
+ textObjectCollection.forEach(function(item) {
|
|
|
798
|
+ var lineStartPoistion = convertCoordinateOrigin(item.lineStart.x, item.lineStart.y, center);
|
|
|
799
|
+ var lineEndPoistion = convertCoordinateOrigin(item.lineEnd.x, item.lineEnd.y, center);
|
|
|
800
|
+ var textPosition = convertCoordinateOrigin(item.start.x, item.start.y, center);
|
|
|
801
|
+ context.setLineWidth(1);
|
|
|
802
|
+ context.setFontSize(config.fontSize);
|
|
|
803
|
+ context.beginPath();
|
|
|
804
|
+ context.setStrokeStyle(item.color);
|
|
|
805
|
+ context.setFillStyle(item.color);
|
|
|
806
|
+ context.moveTo(lineStartPoistion.x, lineStartPoistion.y);
|
|
|
807
|
+ var curveStartX = item.start.x < 0 ? textPosition.x + item.width : textPosition.x;
|
|
|
808
|
+ var textStartX = item.start.x < 0 ? textPosition.x - 5 : textPosition.x + 5;
|
|
|
809
|
+ context.quadraticCurveTo(lineEndPoistion.x, lineEndPoistion.y, curveStartX, textPosition.y);
|
|
|
810
|
+ context.moveTo(lineStartPoistion.x, lineStartPoistion.y);
|
|
|
811
|
+ context.stroke();
|
|
|
812
|
+ context.closePath();
|
|
|
813
|
+ context.beginPath();
|
|
|
814
|
+ context.moveTo(textPosition.x + item.width, textPosition.y);
|
|
|
815
|
+ context.arc(curveStartX, textPosition.y, 2, 0, 2 * Math.PI);
|
|
|
816
|
+ context.closePath();
|
|
|
817
|
+ context.fill();
|
|
|
818
|
+ context.beginPath();
|
|
|
819
|
+ context.setFillStyle('#666666');
|
|
|
820
|
+ context.fillText(item.text, textStartX, textPosition.y + 3);
|
|
|
821
|
+ context.closePath();
|
|
|
822
|
+ context.stroke();
|
|
|
823
|
+
|
|
|
824
|
+ context.closePath();
|
|
|
825
|
+ });
|
|
|
826
|
+}
|
|
|
827
|
+
|
|
|
828
|
+function drawToolTipSplitLine(offsetX, opts, config, context) {
|
|
|
829
|
+ var startY = config.padding;
|
|
|
830
|
+ var endY = opts.height - config.padding - config.xAxisHeight - config.legendHeight;
|
|
|
831
|
+ context.beginPath();
|
|
|
832
|
+ context.setStrokeStyle('#cccccc');
|
|
|
833
|
+ context.setLineWidth(1);
|
|
|
834
|
+ context.moveTo(offsetX, startY);
|
|
|
835
|
+ context.lineTo(offsetX, endY);
|
|
|
836
|
+ context.stroke();
|
|
|
837
|
+ context.closePath();
|
|
|
838
|
+}
|
|
|
839
|
+
|
|
|
840
|
+function drawToolTip(textList, offset, opts, config, context) {
|
|
|
841
|
+ var legendWidth = 4;
|
|
|
842
|
+ var legendMarginRight = 5;
|
|
|
843
|
+ var arrowWidth = 8;
|
|
|
844
|
+ var isOverRightBorder = false;
|
|
|
845
|
+ offset = assign({
|
|
|
846
|
+ x: 0,
|
|
|
847
|
+ y: 0
|
|
|
848
|
+ }, offset);
|
|
|
849
|
+ offset.y -= 8;
|
|
|
850
|
+ var textWidth = textList.map(function(item) {
|
|
|
851
|
+ return measureText(item.text);
|
|
|
852
|
+ });
|
|
|
853
|
+
|
|
|
854
|
+ var toolTipWidth = legendWidth + legendMarginRight + 4 * config.toolTipPadding + Math.max.apply(null, textWidth);
|
|
|
855
|
+ var toolTipHeight = 2 * config.toolTipPadding + textList.length * config.toolTipLineHeight;
|
|
|
856
|
+
|
|
|
857
|
+ // if beyond the right border
|
|
|
858
|
+ if (offset.x - Math.abs(opts._scrollDistance_) + arrowWidth + toolTipWidth > opts.width) {
|
|
|
859
|
+ isOverRightBorder = true;
|
|
|
860
|
+ }
|
|
|
861
|
+
|
|
|
862
|
+ // draw background rect
|
|
|
863
|
+ context.beginPath();
|
|
|
864
|
+ context.setFillStyle(opts.tooltip.option.background || config.toolTipBackground);
|
|
|
865
|
+ context.setGlobalAlpha(config.toolTipOpacity);
|
|
|
866
|
+ if (isOverRightBorder) {
|
|
|
867
|
+ context.moveTo(offset.x, offset.y + 10);
|
|
|
868
|
+ context.lineTo(offset.x - arrowWidth, offset.y + 10 - 5);
|
|
|
869
|
+ context.lineTo(offset.x - arrowWidth, offset.y + 10 + 5);
|
|
|
870
|
+ context.moveTo(offset.x, offset.y + 10);
|
|
|
871
|
+ context.fillRect(offset.x - toolTipWidth - arrowWidth, offset.y, toolTipWidth, toolTipHeight);
|
|
|
872
|
+ } else {
|
|
|
873
|
+ context.moveTo(offset.x, offset.y + 10);
|
|
|
874
|
+ context.lineTo(offset.x + arrowWidth, offset.y + 10 - 5);
|
|
|
875
|
+ context.lineTo(offset.x + arrowWidth, offset.y + 10 + 5);
|
|
|
876
|
+ context.moveTo(offset.x, offset.y + 10);
|
|
|
877
|
+ context.fillRect(offset.x + arrowWidth, offset.y, toolTipWidth, toolTipHeight);
|
|
|
878
|
+ }
|
|
|
879
|
+
|
|
|
880
|
+ context.closePath();
|
|
|
881
|
+ context.fill();
|
|
|
882
|
+ context.setGlobalAlpha(1);
|
|
|
883
|
+
|
|
|
884
|
+ // draw legend
|
|
|
885
|
+ textList.forEach(function(item, index) {
|
|
|
886
|
+ context.beginPath();
|
|
|
887
|
+ context.setFillStyle(item.color);
|
|
|
888
|
+ var startX = offset.x + arrowWidth + 2 * config.toolTipPadding;
|
|
|
889
|
+ var startY = offset.y + (config.toolTipLineHeight - config.fontSize) / 2 + config.toolTipLineHeight * index + config.toolTipPadding;
|
|
|
890
|
+ if (isOverRightBorder) {
|
|
|
891
|
+ startX = offset.x - toolTipWidth - arrowWidth + 2 * config.toolTipPadding;
|
|
|
892
|
+ }
|
|
|
893
|
+ context.fillRect(startX, startY, legendWidth, config.fontSize);
|
|
|
894
|
+ context.closePath();
|
|
|
895
|
+ });
|
|
|
896
|
+
|
|
|
897
|
+ // draw text list
|
|
|
898
|
+ context.beginPath();
|
|
|
899
|
+ context.setFontSize(config.fontSize);
|
|
|
900
|
+ context.setFillStyle('#ffffff');
|
|
|
901
|
+ textList.forEach(function(item, index) {
|
|
|
902
|
+ var startX = offset.x + arrowWidth + 2 * config.toolTipPadding + legendWidth + legendMarginRight;
|
|
|
903
|
+ if (isOverRightBorder) {
|
|
|
904
|
+ startX = offset.x - toolTipWidth - arrowWidth + 2 * config.toolTipPadding + +legendWidth + legendMarginRight;
|
|
|
905
|
+ }
|
|
|
906
|
+ var startY = offset.y + (config.toolTipLineHeight - config.fontSize) / 2 + config.toolTipLineHeight * index + config.toolTipPadding;
|
|
|
907
|
+ context.fillText(item.text, startX, startY + config.fontSize);
|
|
|
908
|
+ });
|
|
|
909
|
+ context.stroke();
|
|
|
910
|
+ context.closePath();
|
|
|
911
|
+}
|
|
|
912
|
+
|
|
|
913
|
+function drawYAxisTitle(title, opts, config, context) {
|
|
|
914
|
+ var startX = config.xAxisHeight + (opts.height - config.xAxisHeight - measureText(title)) / 2;
|
|
|
915
|
+ context.save();
|
|
|
916
|
+ context.beginPath();
|
|
|
917
|
+ context.setFontSize(config.fontSize);
|
|
|
918
|
+ context.setFillStyle(opts.yAxis.titleFontColor || '#333333');
|
|
|
919
|
+ context.translate(0, opts.height);
|
|
|
920
|
+ context.rotate(-90 * Math.PI / 180);
|
|
|
921
|
+ context.fillText(title, startX, config.padding + 0.5 * config.fontSize);
|
|
|
922
|
+ context.stroke();
|
|
|
923
|
+ context.closePath();
|
|
|
924
|
+ context.restore();
|
|
|
925
|
+}
|
|
|
926
|
+
|
|
|
927
|
+function drawToolTipBridge(opts, config, context, process) {
|
|
|
928
|
+ context.save();
|
|
|
929
|
+ if (opts._scrollDistance_ && opts._scrollDistance_ !== 0 && opts.enableScroll === true) {
|
|
|
930
|
+ context.translate(opts._scrollDistance_, 0);
|
|
|
931
|
+ }
|
|
|
932
|
+ if (opts.tooltip && opts.tooltip.textList && opts.tooltip.textList.length && process === 1) {
|
|
|
933
|
+ drawToolTip(opts.tooltip.textList, opts.tooltip.offset, opts, config, context);
|
|
|
934
|
+ }
|
|
|
935
|
+ context.restore();
|
|
|
936
|
+}
|
|
|
937
|
+
|
|
|
938
|
+function drawXAxis(categories, opts, config, context) {
|
|
|
939
|
+ var _getXAxisPoints4 = getXAxisPoints(categories, opts, config),
|
|
|
940
|
+ xAxisPoints = _getXAxisPoints4.xAxisPoints,
|
|
|
941
|
+ startX = _getXAxisPoints4.startX,
|
|
|
942
|
+ endX = _getXAxisPoints4.endX,
|
|
|
943
|
+ eachSpacing = _getXAxisPoints4.eachSpacing;
|
|
|
944
|
+
|
|
|
945
|
+ var startY = opts.height - config.padding - config.xAxisHeight - config.legendHeight;
|
|
|
946
|
+ var endY = startY + config.xAxisLineHeight;
|
|
|
947
|
+
|
|
|
948
|
+ context.save();
|
|
|
949
|
+ if (opts._scrollDistance_ && opts._scrollDistance_ !== 0) {
|
|
|
950
|
+ context.translate(opts._scrollDistance_, 0);
|
|
|
951
|
+ }
|
|
|
952
|
+
|
|
|
953
|
+ context.beginPath();
|
|
|
954
|
+ context.setStrokeStyle(opts.xAxis.gridColor || "#cccccc");
|
|
|
955
|
+
|
|
|
956
|
+ if (opts.xAxis.disableGrid !== true) {
|
|
|
957
|
+ if (opts.xAxis.type === 'calibration') {
|
|
|
958
|
+ xAxisPoints.forEach(function(item, index) {
|
|
|
959
|
+ if (index > 0) {
|
|
|
960
|
+ context.moveTo(item - eachSpacing / 2, startY);
|
|
|
961
|
+ context.lineTo(item - eachSpacing / 2, startY + 4);
|
|
|
962
|
+ }
|
|
|
963
|
+ });
|
|
|
964
|
+ } else {
|
|
|
965
|
+ xAxisPoints.forEach(function(item, index) {
|
|
|
966
|
+ context.moveTo(item, startY);
|
|
|
967
|
+ context.lineTo(item, endY);
|
|
|
968
|
+ });
|
|
|
969
|
+ }
|
|
|
970
|
+ }
|
|
|
971
|
+ context.closePath();
|
|
|
972
|
+ context.stroke();
|
|
|
973
|
+
|
|
|
974
|
+ // 对X轴列表做抽稀处理
|
|
|
975
|
+ var validWidth = opts.width - 2 * config.padding - config.yAxisWidth - config.yAxisTitleWidth;
|
|
|
976
|
+ var maxXAxisListLength = Math.min(categories.length, Math.ceil(validWidth / config.fontSize / 1.5));
|
|
|
977
|
+ var ratio = Math.ceil(categories.length / maxXAxisListLength);
|
|
|
978
|
+
|
|
|
979
|
+ categories = categories.map(function(item, index) {
|
|
|
980
|
+ return index % ratio !== 0 ? '' : item;
|
|
|
981
|
+ });
|
|
|
982
|
+
|
|
|
983
|
+ if (config._xAxisTextAngle_ === 0) {
|
|
|
984
|
+ context.beginPath();
|
|
|
985
|
+ context.setFontSize(config.fontSize);
|
|
|
986
|
+ context.setFillStyle(opts.xAxis.fontColor || '#666666');
|
|
|
987
|
+ categories.forEach(function(item, index) {
|
|
|
988
|
+ var offset = eachSpacing / 2 - measureText(item) / 2;
|
|
|
989
|
+ context.fillText(item, xAxisPoints[index] + offset, startY + config.fontSize + 5);
|
|
|
990
|
+ });
|
|
|
991
|
+ context.closePath();
|
|
|
992
|
+ context.stroke();
|
|
|
993
|
+ } else {
|
|
|
994
|
+ categories.forEach(function(item, index) {
|
|
|
995
|
+ context.save();
|
|
|
996
|
+ context.beginPath();
|
|
|
997
|
+ context.setFontSize(config.fontSize);
|
|
|
998
|
+ context.setFillStyle(opts.xAxis.fontColor || '#666666');
|
|
|
999
|
+ var textWidth = measureText(item);
|
|
|
1000
|
+ var offset = eachSpacing / 2 - textWidth;
|
|
|
1001
|
+
|
|
|
1002
|
+ var _calRotateTranslate = calRotateTranslate(xAxisPoints[index] + eachSpacing / 2, startY + config.fontSize / 2 + 5, opts.height),
|
|
|
1003
|
+ transX = _calRotateTranslate.transX,
|
|
|
1004
|
+ transY = _calRotateTranslate.transY;
|
|
|
1005
|
+
|
|
|
1006
|
+ context.rotate(-1 * config._xAxisTextAngle_);
|
|
|
1007
|
+ context.translate(transX, transY);
|
|
|
1008
|
+ context.fillText(item, xAxisPoints[index] + offset, startY + config.fontSize + 5);
|
|
|
1009
|
+ context.closePath();
|
|
|
1010
|
+ context.stroke();
|
|
|
1011
|
+ context.restore();
|
|
|
1012
|
+ });
|
|
|
1013
|
+ }
|
|
|
1014
|
+
|
|
|
1015
|
+ context.restore();
|
|
|
1016
|
+}
|
|
|
1017
|
+
|
|
|
1018
|
+function drawYAxisGrid(opts, config, context) {
|
|
|
1019
|
+ var spacingValid = opts.height - 2 * config.padding - config.xAxisHeight - config.legendHeight;
|
|
|
1020
|
+ var eachSpacing = Math.floor(spacingValid / config.yAxisSplit);
|
|
|
1021
|
+ var yAxisTotalWidth = config.yAxisWidth + config.yAxisTitleWidth;
|
|
|
1022
|
+ var startX = config.padding + yAxisTotalWidth;
|
|
|
1023
|
+ var endX = opts.width - config.padding;
|
|
|
1024
|
+
|
|
|
1025
|
+ var points = [];
|
|
|
1026
|
+ for (var i = 0; i < config.yAxisSplit; i++) {
|
|
|
1027
|
+ points.push(config.padding + eachSpacing * i);
|
|
|
1028
|
+ }
|
|
|
1029
|
+ points.push(config.padding + eachSpacing * config.yAxisSplit + 2);
|
|
|
1030
|
+
|
|
|
1031
|
+ context.beginPath();
|
|
|
1032
|
+ context.setStrokeStyle(opts.yAxis.gridColor || "#cccccc");
|
|
|
1033
|
+ context.setLineWidth(1);
|
|
|
1034
|
+ points.forEach(function(item, index) {
|
|
|
1035
|
+ context.moveTo(startX, item);
|
|
|
1036
|
+ context.lineTo(endX, item);
|
|
|
1037
|
+ });
|
|
|
1038
|
+ context.closePath();
|
|
|
1039
|
+ context.stroke();
|
|
|
1040
|
+}
|
|
|
1041
|
+
|
|
|
1042
|
+function drawYAxis(series, opts, config, context) {
|
|
|
1043
|
+ if (opts.yAxis.disabled === true) {
|
|
|
1044
|
+ return;
|
|
|
1045
|
+ }
|
|
|
1046
|
+
|
|
|
1047
|
+ var _calYAxisData4 = calYAxisData(series, opts, config),
|
|
|
1048
|
+ rangesFormat = _calYAxisData4.rangesFormat;
|
|
|
1049
|
+
|
|
|
1050
|
+ var yAxisTotalWidth = config.yAxisWidth + config.yAxisTitleWidth;
|
|
|
1051
|
+
|
|
|
1052
|
+ var spacingValid = opts.height - 2 * config.padding - config.xAxisHeight - config.legendHeight;
|
|
|
1053
|
+ var eachSpacing = Math.floor(spacingValid / config.yAxisSplit);
|
|
|
1054
|
+ var startX = config.padding + yAxisTotalWidth;
|
|
|
1055
|
+ var endX = opts.width - config.padding;
|
|
|
1056
|
+ var endY = opts.height - config.padding - config.xAxisHeight - config.legendHeight;
|
|
|
1057
|
+
|
|
|
1058
|
+ // set YAxis background
|
|
|
1059
|
+ context.setFillStyle(opts.background || '#ffffff');
|
|
|
1060
|
+ if (opts._scrollDistance_ < 0) {
|
|
|
1061
|
+ context.fillRect(0, 0, startX, endY + config.xAxisHeight + 5);
|
|
|
1062
|
+ }
|
|
|
1063
|
+ context.fillRect(endX, 0, opts.width, endY + config.xAxisHeight + 5);
|
|
|
1064
|
+
|
|
|
1065
|
+ var points = [];
|
|
|
1066
|
+ for (var i = 0; i <= config.yAxisSplit; i++) {
|
|
|
1067
|
+ points.push(config.padding + eachSpacing * i);
|
|
|
1068
|
+ }
|
|
|
1069
|
+
|
|
|
1070
|
+ context.stroke();
|
|
|
1071
|
+ context.beginPath();
|
|
|
1072
|
+ context.setFontSize(config.fontSize);
|
|
|
1073
|
+ context.setFillStyle(opts.yAxis.fontColor || '#666666');
|
|
|
1074
|
+ rangesFormat.forEach(function(item, index) {
|
|
|
1075
|
+ var pos = points[index] ? points[index] : endY;
|
|
|
1076
|
+ context.fillText(item, config.padding + config.yAxisTitleWidth, pos + config.fontSize / 2);
|
|
|
1077
|
+ });
|
|
|
1078
|
+ context.closePath();
|
|
|
1079
|
+ context.stroke();
|
|
|
1080
|
+
|
|
|
1081
|
+ if (opts.yAxis.title) {
|
|
|
1082
|
+ drawYAxisTitle(opts.yAxis.title, opts, config, context);
|
|
|
1083
|
+ }
|
|
|
1084
|
+}
|
|
|
1085
|
+
|
|
|
1086
|
+function drawLegend(series, opts, config, context) {
|
|
|
1087
|
+ if (!opts.legend) {
|
|
|
1088
|
+ return;
|
|
|
1089
|
+ }
|
|
|
1090
|
+ // each legend shape width 15px
|
|
|
1091
|
+ // the spacing between shape and text in each legend is the `padding`
|
|
|
1092
|
+ // each legend spacing is the `padding`
|
|
|
1093
|
+ // legend margin top `config.padding`
|
|
|
1094
|
+
|
|
|
1095
|
+ var _calLegendData = calLegendData(series, opts, config),
|
|
|
1096
|
+ legendList = _calLegendData.legendList;
|
|
|
1097
|
+
|
|
|
1098
|
+ var padding = 5;
|
|
|
1099
|
+ var marginTop = 8;
|
|
|
1100
|
+ var shapeWidth = 15;
|
|
|
1101
|
+ legendList.forEach(function(itemList, listIndex) {
|
|
|
1102
|
+ var width = 0;
|
|
|
1103
|
+ itemList.forEach(function(item) {
|
|
|
1104
|
+ item.name = item.name || 'undefined';
|
|
|
1105
|
+ width += 3 * padding + measureText(item.name) + shapeWidth;
|
|
|
1106
|
+ });
|
|
|
1107
|
+ var startX = (opts.width - width) / 2 + padding;
|
|
|
1108
|
+ var startY = opts.height - config.padding - config.legendHeight + listIndex * (config.fontSize + marginTop) + padding + marginTop;
|
|
|
1109
|
+
|
|
|
1110
|
+ context.setFontSize(config.fontSize);
|
|
|
1111
|
+ itemList.forEach(function(item) {
|
|
|
1112
|
+ switch (opts.type) {
|
|
|
1113
|
+ case 'line':
|
|
|
1114
|
+ context.beginPath();
|
|
|
1115
|
+ context.setLineWidth(1);
|
|
|
1116
|
+ context.setStrokeStyle(item.color);
|
|
|
1117
|
+ context.moveTo(startX - 2, startY + 5);
|
|
|
1118
|
+ context.lineTo(startX + 17, startY + 5);
|
|
|
1119
|
+ context.stroke();
|
|
|
1120
|
+ context.closePath();
|
|
|
1121
|
+ context.beginPath();
|
|
|
1122
|
+ context.setLineWidth(1);
|
|
|
1123
|
+ context.setStrokeStyle('#ffffff');
|
|
|
1124
|
+ context.setFillStyle(item.color);
|
|
|
1125
|
+ context.moveTo(startX + 7.5, startY + 5);
|
|
|
1126
|
+ context.arc(startX + 7.5, startY + 5, 4, 0, 2 * Math.PI);
|
|
|
1127
|
+ context.fill();
|
|
|
1128
|
+ context.stroke();
|
|
|
1129
|
+ context.closePath();
|
|
|
1130
|
+ break;
|
|
|
1131
|
+ case 'pie':
|
|
|
1132
|
+ case 'ring':
|
|
|
1133
|
+ context.beginPath();
|
|
|
1134
|
+ context.setFillStyle(item.color);
|
|
|
1135
|
+ context.moveTo(startX + 7.5, startY + 5);
|
|
|
1136
|
+ context.arc(startX + 7.5, startY + 5, 8, 0, 2 * Math.PI);
|
|
|
1137
|
+ context.closePath();
|
|
|
1138
|
+ context.fill();
|
|
|
1139
|
+ break;
|
|
|
1140
|
+ default:
|
|
|
1141
|
+ context.beginPath();
|
|
|
1142
|
+ context.setFillStyle(item.color);
|
|
|
1143
|
+ context.moveTo(startX, startY);
|
|
|
1144
|
+ context.rect(startX, startY, 15, 10);
|
|
|
1145
|
+ context.closePath();
|
|
|
1146
|
+ context.fill();
|
|
|
1147
|
+ }
|
|
|
1148
|
+ startX += padding + shapeWidth;
|
|
|
1149
|
+ context.beginPath();
|
|
|
1150
|
+ context.setFillStyle(opts.extra.legendTextColor || '#333333');
|
|
|
1151
|
+ context.fillText(item.name, startX, startY + 9);
|
|
|
1152
|
+ context.closePath();
|
|
|
1153
|
+ context.stroke();
|
|
|
1154
|
+ startX += measureText(item.name) + 2 * padding;
|
|
|
1155
|
+ });
|
|
|
1156
|
+ });
|
|
|
1157
|
+}
|
|
|
1158
|
+
|
|
|
1159
|
+function drawPieDataPoints(series, opts, config, context) {
|
|
|
1160
|
+ var process = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 1;
|
|
|
1161
|
+
|
|
|
1162
|
+ var pieOption = opts.extra.pie || {};
|
|
|
1163
|
+ series = getPieDataPoints(series, process);
|
|
|
1164
|
+ var centerPosition = {
|
|
|
1165
|
+ x: opts.width / 2,
|
|
|
1166
|
+ y: (opts.height - config.legendHeight) / 2
|
|
|
1167
|
+ };
|
|
|
1168
|
+ var radius = Math.min(centerPosition.x - config.pieChartLinePadding - config.pieChartTextPadding - config._pieTextMaxLength_, centerPosition.y - config.pieChartLinePadding - config.pieChartTextPadding);
|
|
|
1169
|
+ if (opts.dataLabel) {
|
|
|
1170
|
+ radius -= 10;
|
|
|
1171
|
+ } else {
|
|
|
1172
|
+ radius -= 2 * config.padding;
|
|
|
1173
|
+ }
|
|
|
1174
|
+ series = series.map(function(eachSeries) {
|
|
|
1175
|
+ eachSeries._start_ += (pieOption.offsetAngle || 0) * Math.PI / 180;
|
|
|
1176
|
+ return eachSeries;
|
|
|
1177
|
+ });
|
|
|
1178
|
+ series.forEach(function(eachSeries) {
|
|
|
1179
|
+ context.beginPath();
|
|
|
1180
|
+ context.setLineWidth(2);
|
|
|
1181
|
+ context.setStrokeStyle('#ffffff');
|
|
|
1182
|
+ context.setFillStyle(eachSeries.color);
|
|
|
1183
|
+ context.moveTo(centerPosition.x, centerPosition.y);
|
|
|
1184
|
+ context.arc(centerPosition.x, centerPosition.y, radius, eachSeries._start_, eachSeries._start_ + 2 * eachSeries._proportion_ * Math.PI);
|
|
|
1185
|
+ context.closePath();
|
|
|
1186
|
+ context.fill();
|
|
|
1187
|
+ if (opts.disablePieStroke !== true) {
|
|
|
1188
|
+ context.stroke();
|
|
|
1189
|
+ }
|
|
|
1190
|
+ });
|
|
|
1191
|
+
|
|
|
1192
|
+ if (opts.type === 'ring') {
|
|
|
1193
|
+ var innerPieWidth = radius * 0.6;
|
|
|
1194
|
+ if (typeof opts.extra.ringWidth === 'number' && opts.extra.ringWidth > 0) {
|
|
|
1195
|
+ innerPieWidth = Math.max(0, radius - opts.extra.ringWidth);
|
|
|
1196
|
+ }
|
|
|
1197
|
+ context.beginPath();
|
|
|
1198
|
+ context.setFillStyle(opts.background || '#ffffff');
|
|
|
1199
|
+ context.moveTo(centerPosition.x, centerPosition.y);
|
|
|
1200
|
+ context.arc(centerPosition.x, centerPosition.y, innerPieWidth, 0, 2 * Math.PI);
|
|
|
1201
|
+ context.closePath();
|
|
|
1202
|
+ context.fill();
|
|
|
1203
|
+ }
|
|
|
1204
|
+
|
|
|
1205
|
+ if (opts.dataLabel !== false && process === 1) {
|
|
|
1206
|
+ // fix https://github.com/xiaolin3303/wx-charts/issues/132
|
|
|
1207
|
+ var valid = false;
|
|
|
1208
|
+ for (var i = 0, len = series.length; i < len; i++) {
|
|
|
1209
|
+ if (series[i].data > 0) {
|
|
|
1210
|
+ valid = true;
|
|
|
1211
|
+ break;
|
|
|
1212
|
+ }
|
|
|
1213
|
+ }
|
|
|
1214
|
+
|
|
|
1215
|
+ if (valid) {
|
|
|
1216
|
+ drawPieText(series, opts, config, context, radius, centerPosition);
|
|
|
1217
|
+ }
|
|
|
1218
|
+ }
|
|
|
1219
|
+
|
|
|
1220
|
+ if (process === 1 && opts.type === 'ring') {
|
|
|
1221
|
+ drawRingTitle(opts, config, context);
|
|
|
1222
|
+ }
|
|
|
1223
|
+
|
|
|
1224
|
+ return {
|
|
|
1225
|
+ center: centerPosition,
|
|
|
1226
|
+ radius: radius,
|
|
|
1227
|
+ series: series
|
|
|
1228
|
+ };
|
|
|
1229
|
+}
|
|
|
1230
|
+
|
|
|
1231
|
+function drawCanvas(opts, context) {
|
|
|
1232
|
+ context.draw();
|
|
|
1233
|
+}
|
|
|
1234
|
+
|
|
|
1235
|
+var Timing = {
|
|
|
1236
|
+ easeIn: function easeIn(pos) {
|
|
|
1237
|
+ return Math.pow(pos, 3);
|
|
|
1238
|
+ },
|
|
|
1239
|
+
|
|
|
1240
|
+ easeOut: function easeOut(pos) {
|
|
|
1241
|
+ return Math.pow(pos - 1, 3) + 1;
|
|
|
1242
|
+ },
|
|
|
1243
|
+
|
|
|
1244
|
+ easeInOut: function easeInOut(pos) {
|
|
|
1245
|
+ if ((pos /= 0.5) < 1) {
|
|
|
1246
|
+ return 0.5 * Math.pow(pos, 3);
|
|
|
1247
|
+ } else {
|
|
|
1248
|
+ return 0.5 * (Math.pow(pos - 2, 3) + 2);
|
|
|
1249
|
+ }
|
|
|
1250
|
+ },
|
|
|
1251
|
+
|
|
|
1252
|
+ linear: function linear(pos) {
|
|
|
1253
|
+ return pos;
|
|
|
1254
|
+ }
|
|
|
1255
|
+};
|
|
|
1256
|
+
|
|
|
1257
|
+function Animation(opts) {
|
|
|
1258
|
+ this.isStop = false;
|
|
|
1259
|
+ opts.duration = typeof opts.duration === 'undefined' ? 1000 : opts.duration;
|
|
|
1260
|
+ opts.timing = opts.timing || 'linear';
|
|
|
1261
|
+
|
|
|
1262
|
+ var delay = 17;
|
|
|
1263
|
+
|
|
|
1264
|
+ var createAnimationFrame = function createAnimationFrame() {
|
|
|
1265
|
+ if (typeof requestAnimationFrame !== 'undefined') {
|
|
|
1266
|
+ return requestAnimationFrame;
|
|
|
1267
|
+ } else if (typeof setTimeout !== 'undefined') {
|
|
|
1268
|
+ return function(step, delay) {
|
|
|
1269
|
+ setTimeout(function() {
|
|
|
1270
|
+ var timeStamp = +new Date();
|
|
|
1271
|
+ step(timeStamp);
|
|
|
1272
|
+ }, delay);
|
|
|
1273
|
+ };
|
|
|
1274
|
+ } else {
|
|
|
1275
|
+ return function(step) {
|
|
|
1276
|
+ step(null);
|
|
|
1277
|
+ };
|
|
|
1278
|
+ }
|
|
|
1279
|
+ };
|
|
|
1280
|
+ var animationFrame = createAnimationFrame();
|
|
|
1281
|
+ var startTimeStamp = null;
|
|
|
1282
|
+ var _step = function step(timestamp) {
|
|
|
1283
|
+ if (timestamp === null || this.isStop === true) {
|
|
|
1284
|
+ opts.onProcess && opts.onProcess(1);
|
|
|
1285
|
+ opts.onAnimationFinish && opts.onAnimationFinish();
|
|
|
1286
|
+ return;
|
|
|
1287
|
+ }
|
|
|
1288
|
+ if (startTimeStamp === null) {
|
|
|
1289
|
+ startTimeStamp = timestamp;
|
|
|
1290
|
+ }
|
|
|
1291
|
+ if (timestamp - startTimeStamp < opts.duration) {
|
|
|
1292
|
+ var process = (timestamp - startTimeStamp) / opts.duration;
|
|
|
1293
|
+ var timingFunction = Timing[opts.timing];
|
|
|
1294
|
+ process = timingFunction(process);
|
|
|
1295
|
+ opts.onProcess && opts.onProcess(process);
|
|
|
1296
|
+ animationFrame(_step, delay);
|
|
|
1297
|
+ } else {
|
|
|
1298
|
+ opts.onProcess && opts.onProcess(1);
|
|
|
1299
|
+ opts.onAnimationFinish && opts.onAnimationFinish();
|
|
|
1300
|
+ }
|
|
|
1301
|
+ };
|
|
|
1302
|
+ _step = _step.bind(this);
|
|
|
1303
|
+
|
|
|
1304
|
+ animationFrame(_step, delay);
|
|
|
1305
|
+}
|
|
|
1306
|
+
|
|
|
1307
|
+// stop animation immediately
|
|
|
1308
|
+// and tigger onAnimationFinish
|
|
|
1309
|
+Animation.prototype.stop = function() {
|
|
|
1310
|
+ this.isStop = true;
|
|
|
1311
|
+};
|
|
|
1312
|
+
|
|
|
1313
|
+function drawCharts(type, opts, config, context) {
|
|
|
1314
|
+ var _this = this;
|
|
|
1315
|
+
|
|
|
1316
|
+ var series = opts.series;
|
|
|
1317
|
+ var categories = opts.categories;
|
|
|
1318
|
+ series = fillSeriesColor(series, config);
|
|
|
1319
|
+
|
|
|
1320
|
+ var _calLegendData = calLegendData(series, opts, config),
|
|
|
1321
|
+ legendHeight = _calLegendData.legendHeight;
|
|
|
1322
|
+
|
|
|
1323
|
+ config.legendHeight = legendHeight;
|
|
|
1324
|
+
|
|
|
1325
|
+ var _calYAxisData = calYAxisData(series, opts, config),
|
|
|
1326
|
+ yAxisWidth = _calYAxisData.yAxisWidth;
|
|
|
1327
|
+
|
|
|
1328
|
+ config.yAxisWidth = yAxisWidth;
|
|
|
1329
|
+ if (categories && categories.length) {
|
|
|
1330
|
+ var _calCategoriesData = calCategoriesData(categories, opts, config),
|
|
|
1331
|
+ xAxisHeight = _calCategoriesData.xAxisHeight,
|
|
|
1332
|
+ angle = _calCategoriesData.angle;
|
|
|
1333
|
+
|
|
|
1334
|
+ config.xAxisHeight = xAxisHeight;
|
|
|
1335
|
+ config._xAxisTextAngle_ = angle;
|
|
|
1336
|
+ }
|
|
|
1337
|
+ if (type === 'pie' || type === 'ring') {
|
|
|
1338
|
+ config._pieTextMaxLength_ = opts.dataLabel === false ? 0 : getPieTextMaxLength(series);
|
|
|
1339
|
+ }
|
|
|
1340
|
+
|
|
|
1341
|
+ var duration = opts.animation ? 1000 : 0;
|
|
|
1342
|
+ this.animationInstance && this.animationInstance.stop();
|
|
|
1343
|
+ switch (type) {
|
|
|
1344
|
+ case 'ring':
|
|
|
1345
|
+ case 'pie':
|
|
|
1346
|
+ this.animationInstance = new Animation({
|
|
|
1347
|
+ timing: 'easeInOut',
|
|
|
1348
|
+ duration: duration,
|
|
|
1349
|
+ onProcess: function onProcess(process) {
|
|
|
1350
|
+ _this.chartData.pieData = drawPieDataPoints(series, opts, config, context, process);
|
|
|
1351
|
+ drawLegend(opts.series, opts, config, context);
|
|
|
1352
|
+ drawCanvas(opts, context);
|
|
|
1353
|
+ },
|
|
|
1354
|
+ onAnimationFinish: function onAnimationFinish() {
|
|
|
1355
|
+ _this.event.trigger('renderComplete');
|
|
|
1356
|
+ }
|
|
|
1357
|
+ });
|
|
|
1358
|
+ break;
|
|
|
1359
|
+ case 'radar':
|
|
|
1360
|
+ // this.animationInstance = new Animation({
|
|
|
1361
|
+ // timing: 'easeInOut',
|
|
|
1362
|
+ // duration: duration,
|
|
|
1363
|
+ // onProcess: function onProcess(process) {
|
|
|
1364
|
+ // _this.chartData.radarData = drawRadarDataPoints(series, opts, config, context, process);
|
|
|
1365
|
+ // drawLegend(opts.series, opts, config, context);
|
|
|
1366
|
+ // drawCanvas(opts, context);
|
|
|
1367
|
+ // },
|
|
|
1368
|
+ // onAnimationFinish: function onAnimationFinish() {
|
|
|
1369
|
+ // _this.event.trigger('renderComplete');
|
|
|
1370
|
+ // }
|
|
|
1371
|
+ // });
|
|
|
1372
|
+ break;
|
|
|
1373
|
+ }
|
|
|
1374
|
+}
|
|
|
1375
|
+
|
|
|
1376
|
+// simple event implement
|
|
|
1377
|
+
|
|
|
1378
|
+function Event() {
|
|
|
1379
|
+ this.events = {};
|
|
|
1380
|
+}
|
|
|
1381
|
+
|
|
|
1382
|
+Event.prototype.addEventListener = function(type, listener) {
|
|
|
1383
|
+ this.events[type] = this.events[type] || [];
|
|
|
1384
|
+ this.events[type].push(listener);
|
|
|
1385
|
+};
|
|
|
1386
|
+
|
|
|
1387
|
+Event.prototype.trigger = function() {
|
|
|
1388
|
+ for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
|
|
|
1389
|
+ args[_key] = arguments[_key];
|
|
|
1390
|
+ }
|
|
|
1391
|
+
|
|
|
1392
|
+ var type = args[0];
|
|
|
1393
|
+ var params = args.slice(1);
|
|
|
1394
|
+ if (!!this.events[type]) {
|
|
|
1395
|
+ this.events[type].forEach(function(listener) {
|
|
|
1396
|
+ try {
|
|
|
1397
|
+ listener.apply(null, params);
|
|
|
1398
|
+ } catch (e) {
|
|
|
1399
|
+ console.error(e);
|
|
|
1400
|
+ }
|
|
|
1401
|
+ });
|
|
|
1402
|
+ }
|
|
|
1403
|
+};
|
|
|
1404
|
+
|
|
|
1405
|
+var Charts = function Charts(opts) {
|
|
|
1406
|
+ opts.title = opts.title || {};
|
|
|
1407
|
+ opts.subtitle = opts.subtitle || {};
|
|
|
1408
|
+ opts.yAxis = opts.yAxis || {};
|
|
|
1409
|
+ opts.xAxis = opts.xAxis || {};
|
|
|
1410
|
+ opts.extra = opts.extra || {};
|
|
|
1411
|
+ opts.legend = opts.legend === false ? false : true;
|
|
|
1412
|
+ opts.animation = opts.animation === false ? false : true;
|
|
|
1413
|
+ var config$$1 = assign({}, config);
|
|
|
1414
|
+ config$$1.yAxisTitleWidth = opts.yAxis.disabled !== true && opts.yAxis.title ? config$$1.yAxisTitleWidth : 0;
|
|
|
1415
|
+ config$$1.pieChartLinePadding = opts.dataLabel === false ? 0 : config$$1.pieChartLinePadding;
|
|
|
1416
|
+ config$$1.pieChartTextPadding = opts.dataLabel === false ? 0 : config$$1.pieChartTextPadding;
|
|
|
1417
|
+
|
|
|
1418
|
+ this.opts = opts;
|
|
|
1419
|
+ this.config = config$$1;
|
|
|
1420
|
+ this.context = wx.createCanvasContext(opts.canvasId);
|
|
|
1421
|
+ // store calcuated chart data
|
|
|
1422
|
+ // such as chart point coordinate
|
|
|
1423
|
+ this.chartData = {};
|
|
|
1424
|
+ this.event = new Event();
|
|
|
1425
|
+ this.scrollOption = {
|
|
|
1426
|
+ currentOffset: 0,
|
|
|
1427
|
+ startTouchX: 0,
|
|
|
1428
|
+ distance: 0
|
|
|
1429
|
+ };
|
|
|
1430
|
+
|
|
|
1431
|
+ drawCharts.call(this, opts.type, opts, config$$1, this.context);
|
|
|
1432
|
+};
|
|
|
1433
|
+
|
|
|
1434
|
+Charts.prototype.updateData = function() {
|
|
|
1435
|
+ var data = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
|
|
|
1436
|
+
|
|
|
1437
|
+ this.opts.series = data.series || this.opts.series;
|
|
|
1438
|
+ this.opts.categories = data.categories || this.opts.categories;
|
|
|
1439
|
+
|
|
|
1440
|
+ this.opts.title = assign({}, this.opts.title, data.title || {});
|
|
|
1441
|
+ this.opts.subtitle = assign({}, this.opts.subtitle, data.subtitle || {});
|
|
|
1442
|
+
|
|
|
1443
|
+ drawCharts.call(this, this.opts.type, this.opts, this.config, this.context);
|
|
|
1444
|
+};
|
|
|
1445
|
+
|
|
|
1446
|
+Charts.prototype.stopAnimation = function() {
|
|
|
1447
|
+ this.animationInstance && this.animationInstance.stop();
|
|
|
1448
|
+};
|
|
|
1449
|
+
|
|
|
1450
|
+Charts.prototype.addEventListener = function(type, listener) {
|
|
|
1451
|
+ this.event.addEventListener(type, listener);
|
|
|
1452
|
+};
|
|
|
1453
|
+
|
|
|
1454
|
+Charts.prototype.getCurrentDataIndex = function(e) {
|
|
|
1455
|
+ var touches = e.touches && e.touches.length ? e.touches : e.changedTouches;
|
|
|
1456
|
+ if (touches && touches.length) {
|
|
|
1457
|
+ var _touches$ = touches[0],
|
|
|
1458
|
+ x = _touches$.x,
|
|
|
1459
|
+ y = _touches$.y;
|
|
|
1460
|
+
|
|
|
1461
|
+ if (this.opts.type === 'pie' || this.opts.type === 'ring') {
|
|
|
1462
|
+ return findPieChartCurrentIndex({
|
|
|
1463
|
+ x: x,
|
|
|
1464
|
+ y: y
|
|
|
1465
|
+ }, this.chartData.pieData);
|
|
|
1466
|
+ } else if (this.opts.type === 'radar') {
|
|
|
1467
|
+ return findRadarChartCurrentIndex({
|
|
|
1468
|
+ x: x,
|
|
|
1469
|
+ y: y
|
|
|
1470
|
+ }, this.chartData.radarData, this.opts.categories.length);
|
|
|
1471
|
+ } else {
|
|
|
1472
|
+ return findCurrentIndex({
|
|
|
1473
|
+ x: x,
|
|
|
1474
|
+ y: y
|
|
|
1475
|
+ }, this.chartData.xAxisPoints, this.opts, this.config, Math.abs(this.scrollOption.currentOffset));
|
|
|
1476
|
+ }
|
|
|
1477
|
+ }
|
|
|
1478
|
+ return -1;
|
|
|
1479
|
+};
|
|
|
1480
|
+
|
|
|
1481
|
+Charts.prototype.showToolTip = function(e) {
|
|
|
1482
|
+ var option = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
|
|
|
1483
|
+
|
|
|
1484
|
+ if (this.opts.type === 'line' || this.opts.type === 'area') {
|
|
|
1485
|
+ var index = this.getCurrentDataIndex(e);
|
|
|
1486
|
+ var currentOffset = this.scrollOption.currentOffset;
|
|
|
1487
|
+
|
|
|
1488
|
+ var opts = assign({}, this.opts, {
|
|
|
1489
|
+ _scrollDistance_: currentOffset,
|
|
|
1490
|
+ animation: false
|
|
|
1491
|
+ });
|
|
|
1492
|
+ if (index > -1) {
|
|
|
1493
|
+ var seriesData = getSeriesDataItem(this.opts.series, index);
|
|
|
1494
|
+ if (seriesData.length === 0) {
|
|
|
1495
|
+ drawCharts.call(this, opts.type, opts, this.config, this.context);
|
|
|
1496
|
+ } else {
|
|
|
1497
|
+ var _getToolTipData = getToolTipData(seriesData, this.chartData.calPoints, index, this.opts.categories, option),
|
|
|
1498
|
+ textList = _getToolTipData.textList,
|
|
|
1499
|
+ offset = _getToolTipData.offset;
|
|
|
1500
|
+
|
|
|
1501
|
+ opts.tooltip = {
|
|
|
1502
|
+ textList: textList,
|
|
|
1503
|
+ offset: offset,
|
|
|
1504
|
+ option: option
|
|
|
1505
|
+ };
|
|
|
1506
|
+ drawCharts.call(this, opts.type, opts, this.config, this.context);
|
|
|
1507
|
+ }
|
|
|
1508
|
+ } else {
|
|
|
1509
|
+ drawCharts.call(this, opts.type, opts, this.config, this.context);
|
|
|
1510
|
+ }
|
|
|
1511
|
+ }
|
|
|
1512
|
+};
|
|
|
1513
|
+
|
|
|
1514
|
+Charts.prototype.scrollStart = function(e) {
|
|
|
1515
|
+ if (e.touches[0] && this.opts.enableScroll === true) {
|
|
|
1516
|
+ this.scrollOption.startTouchX = e.touches[0].x;
|
|
|
1517
|
+ }
|
|
|
1518
|
+};
|
|
|
1519
|
+
|
|
|
1520
|
+Charts.prototype.scroll = function(e) {
|
|
|
1521
|
+ // TODO throtting...
|
|
|
1522
|
+ if (e.touches[0] && this.opts.enableScroll === true) {
|
|
|
1523
|
+ var _distance = e.touches[0].x - this.scrollOption.startTouchX;
|
|
|
1524
|
+ var currentOffset = this.scrollOption.currentOffset;
|
|
|
1525
|
+
|
|
|
1526
|
+ var validDistance = calValidDistance(currentOffset + _distance, this.chartData, this.config, this.opts);
|
|
|
1527
|
+
|
|
|
1528
|
+ this.scrollOption.distance = _distance = validDistance - currentOffset;
|
|
|
1529
|
+ var opts = assign({}, this.opts, {
|
|
|
1530
|
+ _scrollDistance_: currentOffset + _distance,
|
|
|
1531
|
+ animation: false
|
|
|
1532
|
+ });
|
|
|
1533
|
+
|
|
|
1534
|
+ drawCharts.call(this, opts.type, opts, this.config, this.context);
|
|
|
1535
|
+ }
|
|
|
1536
|
+};
|
|
|
1537
|
+
|
|
|
1538
|
+Charts.prototype.scrollEnd = function(e) {
|
|
|
1539
|
+ if (this.opts.enableScroll === true) {
|
|
|
1540
|
+ var _scrollOption = this.scrollOption,
|
|
|
1541
|
+ currentOffset = _scrollOption.currentOffset,
|
|
|
1542
|
+ distance = _scrollOption.distance;
|
|
|
1543
|
+
|
|
|
1544
|
+ this.scrollOption.currentOffset = currentOffset + distance;
|
|
|
1545
|
+ this.scrollOption.distance = 0;
|
|
|
1546
|
+ }
|
|
|
1547
|
+};
|
|
|
1548
|
+
|
|
|
1549
|
+module.exports = Charts; |
|
|
\ No newline at end of file |
...
|
...
|
|
