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@@ -0,0 +1,2044 @@
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+/*
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+ * charts for WeChat small app v1.0
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+ *
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+ * https://github.com/xiaolin3303/wx-charts
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+ * 2016-11-28
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+ *
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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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+'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: ['#7cb5ec', '#f7a35c', '#434348', '#90ed7d', '#f15c80', '#8085e9'],
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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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+ radarGridCount: 3,
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+ radarLabelTextMargin: 15
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+};
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+
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+// Object.assign polyfill
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+// https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
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+function assign(target, varArgs) {
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+ if (target == null) {
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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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+ // 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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+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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+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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+ } 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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+ var pAy = null;
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+ var pBx = null;
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+ var pBy = null;
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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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+ } 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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+ }
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+
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+ if (i > points.length - 3) {
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+ var last = points.length - 1;
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+ pBx = points[last].x - (points[last].x - points[last - 1].x) * b;
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+ pBy = points[last].y - (points[last].y - points[last - 1].y) * b;
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+ } else {
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+ pBx = points[i + 1].x - (points[i + 2].x - points[i].x) * b;
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+ pBy = points[i + 1].y - (points[i + 2].y - points[i].y) * b;
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+ }
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+
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+ // fix issue https://github.com/xiaolin3303/wx-charts/issues/79
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+ if (isNotMiddlePoint(points, i + 1)) {
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+ pBy = points[i + 1].y;
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+ }
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+ if (isNotMiddlePoint(points, i)) {
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+ pAy = points[i].y;
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+ }
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+
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+ return {
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+ ctrA: { x: pAx, y: pAy },
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+ ctrB: { x: pBx, y: pBy }
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+ };
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+}
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+
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+function convertCoordinateOrigin(x, y, center) {
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+ return {
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+ x: center.x + x,
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+ y: center.y - y
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+ };
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+}
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+
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+function avoidCollision(obj, target) {
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+ if (target) {
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+ // is collision test
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+ while (util.isCollision(obj, target)) {
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+ if (obj.start.x > 0) {
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+ obj.start.y--;
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+ } else if (obj.start.x < 0) {
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+ obj.start.y++;
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+ } else {
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+ if (obj.start.y > 0) {
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+ obj.start.y++;
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+ } else {
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+ obj.start.y--;
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+ }
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+ }
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+ }
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+ }
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+ return obj;
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+}
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+
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+function fillSeriesColor(series, config) {
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+ var index = 0;
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+ return series.map(function (item) {
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+ if (!item.color) {
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+ item.color = config.colors[index];
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+ index = (index + 1) % config.colors.length;
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+ }
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+ return item;
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+ });
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+}
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+
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+function getDataRange(minData, maxData) {
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+ var limit = 0;
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+ var range = maxData - minData;
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+ if (range >= 10000) {
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+ limit = 1000;
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+ } else if (range >= 1000) {
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+ limit = 100;
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+ } else if (range >= 100) {
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+ limit = 10;
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+ } else if (range >= 10) {
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+ limit = 5;
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+ } else if (range >= 1) {
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+ limit = 1;
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+ } else if (range >= 0.1) {
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+ limit = 0.1;
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+ } else {
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+ limit = 0.01;
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+ }
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+ return {
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+ minRange: findRange(minData, 'lower', limit),
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+ maxRange: findRange(maxData, 'upper', limit)
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+ };
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+}
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+
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+function measureText(text) {
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+ var fontSize = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 10;
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+
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+ // wx canvas 未实现measureText方法, 此处自行实现
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+ text = String(text);
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+ var text = text.split('');
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+ var width = 0;
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+ text.forEach(function (item) {
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+ if (/[a-zA-Z]/.test(item)) {
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+ width += 7;
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+ } else if (/[0-9]/.test(item)) {
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+ width += 5.5;
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+ } else if (/\./.test(item)) {
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+ width += 2.7;
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+ } else if (/-/.test(item)) {
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+ width += 3.25;
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+ } else if (/[\u4e00-\u9fa5]/.test(item)) {
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+ width += 10;
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+ } else if (/\(|\)/.test(item)) {
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+ width += 3.73;
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+ } else if (/\s/.test(item)) {
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+ width += 2.5;
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+ } else if (/%/.test(item)) {
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+ width += 8;
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+ } else {
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+ width += 10;
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+ }
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+ });
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+ return width * fontSize / 10;
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+}
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+
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+function dataCombine(series) {
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+ return series.reduce(function (a, b) {
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+ return (a.data ? a.data : a).concat(b.data);
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+ }, []);
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+}
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+
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+function getSeriesDataItem(series, index) {
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+ var data = [];
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+ series.forEach(function (item) {
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+ if (item.data[index] !== null && typeof item.data[index] !== 'undefined') {
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+ var seriesItem = {};
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+ seriesItem.color = item.color;
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+ seriesItem.name = item.name;
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+ seriesItem.data = item.format ? item.format(item.data[index]) : item.data[index];
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+ data.push(seriesItem);
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+ }
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+ });
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+
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+ return data;
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+}
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+
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+
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+
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+function getMaxTextListLength(list) {
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+ var lengthList = list.map(function (item) {
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+ return measureText(item);
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+ });
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+ return Math.max.apply(null, lengthList);
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+}
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+
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+function getRadarCoordinateSeries(length) {
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+ var eachAngle = 2 * Math.PI / length;
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+ var CoordinateSeries = [];
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+ for (var i = 0; i < length; i++) {
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+ CoordinateSeries.push(eachAngle * i);
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+ }
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+
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+ return CoordinateSeries.map(function (item) {
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+ return -1 * item + Math.PI / 2;
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+ });
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+}
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+
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+function getToolTipData(seriesData, calPoints, index, categories) {
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+ var option = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : {};
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+
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+ var textList = seriesData.map(function (item) {
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+ return {
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+ text: option.format ? option.format(item, categories[index]) : item.name + ': ' + item.data,
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+ color: item.color
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+ };
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+ });
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+ var validCalPoints = [];
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+ var offset = {
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+ x: 0,
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+ y: 0
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+ };
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+ calPoints.forEach(function (points) {
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+ if (typeof points[index] !== 'undefined' && points[index] !== null) {
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+ validCalPoints.push(points[index]);
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+ }
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+ });
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+ validCalPoints.forEach(function (item) {
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+ offset.x = Math.round(item.x);
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+ offset.y += item.y;
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+ });
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+
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+ offset.y /= validCalPoints.length;
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+ return { textList: textList, offset: offset };
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+}
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+
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+function findCurrentIndex(currentPoints, xAxisPoints, opts, config) {
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+ var offset = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0;
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+
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+ var currentIndex = -1;
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+ if (isInExactChartArea(currentPoints, opts, config)) {
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+ xAxisPoints.forEach(function (item, index) {
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+ if (currentPoints.x + offset > item) {
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+ currentIndex = index;
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+ }
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+ });
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+ }
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+
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+ return currentIndex;
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+}
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+
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+function isInExactChartArea(currentPoints, opts, config) {
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+ 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;
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+}
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+
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+function findRadarChartCurrentIndex(currentPoints, radarData, count) {
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+ var eachAngleArea = 2 * Math.PI / count;
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+ var currentIndex = -1;
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+ if (isInExactPieChartArea(currentPoints, radarData.center, radarData.radius)) {
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+ var fixAngle = function fixAngle(angle) {
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+ if (angle < 0) {
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+ angle += 2 * Math.PI;
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+ }
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+ if (angle > 2 * Math.PI) {
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+ angle -= 2 * Math.PI;
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+ }
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+ return angle;
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|
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+ };
|
|
|
+
|
|
|
+ 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),
|
|
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+ textList = _getToolTipData.textList,
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+ offset = _getToolTipData.offset;
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+
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+ opts.tooltip = {
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+ textList: textList,
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+ offset: offset,
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+ option: option
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|
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+ };
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+ }
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|
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+ }
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+ drawCharts.call(this, opts.type, opts, this.config, this.context);
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|
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+ }
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|
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+};
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+
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|
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+Charts.prototype.scrollStart = function (e) {
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|
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+ if (e.touches[0] && this.opts.enableScroll === true) {
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|
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+ this.scrollOption.startTouchX = e.touches[0].x;
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|
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+ }
|
|
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+};
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|
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+
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|
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+Charts.prototype.scroll = function (e) {
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|
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+ // TODO throtting...
|
|
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+ if (e.touches[0] && this.opts.enableScroll === true) {
|
|
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+ var _distance = e.touches[0].x - this.scrollOption.startTouchX;
|
|
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+ var currentOffset = this.scrollOption.currentOffset;
|
|
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+
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|
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+ var validDistance = calValidDistance(currentOffset + _distance, this.chartData, this.config, this.opts);
|
|
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+
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|
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+ this.scrollOption.distance = _distance = validDistance - currentOffset;
|
|
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+ 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;
|
Foystor