- *
- <p>
- Creates a Stacked Area Chart. The stacked area chart is useful when displaying multiple aggregated layers of information.
- As with all other series, the Area Series must be appended in the *series* Chart array configuration. See the Chart
- documentation for more information. A typical configuration object for the area series could be:
- </p>
-{@img Ext.chart.series.Area/Ext.chart.series.Area.png Ext.chart.series.Area chart series}
- <pre><code>
- var store = Ext.create('Ext.data.JsonStore', {
- fields: ['name', 'data1', 'data2', 'data3', 'data4', 'data5'],
- data: [
- {'name':'metric one', 'data1':10, 'data2':12, 'data3':14, 'data4':8, 'data5':13},
- {'name':'metric two', 'data1':7, 'data2':8, 'data3':16, 'data4':10, 'data5':3},
- {'name':'metric three', 'data1':5, 'data2':2, 'data3':14, 'data4':12, 'data5':7},
- {'name':'metric four', 'data1':2, 'data2':14, 'data3':6, 'data4':1, 'data5':23},
- {'name':'metric five', 'data1':27, 'data2':38, 'data3':36, 'data4':13, 'data5':33}
- ]
- });
-
- Ext.create('Ext.chart.Chart', {
- renderTo: Ext.getBody(),
- width: 500,
- height: 300,
- store: store,
- axes: [{
- type: 'Numeric',
- grid: true,
- position: 'left',
- fields: ['data1', 'data2', 'data3', 'data4', 'data5'],
- title: 'Sample Values',
- grid: {
- odd: {
- opacity: 1,
- fill: '#ddd',
- stroke: '#bbb',
- 'stroke-width': 1
+ *
+ * Creates a Stacked Area Chart. The stacked area chart is useful when displaying multiple aggregated layers of information.
+ * As with all other series, the Area Series must be appended in the *series* Chart array configuration. See the Chart
+ * documentation for more information. A typical configuration object for the area series could be:
+ *
+ * @example
+ * var store = Ext.create('Ext.data.JsonStore', {
+ * fields: ['name', 'data1', 'data2', 'data3', 'data4', 'data5'],
+ * data: [
+ * { 'name': 'metric one', 'data1':10, 'data2':12, 'data3':14, 'data4':8, 'data5':13 },
+ * { 'name': 'metric two', 'data1':7, 'data2':8, 'data3':16, 'data4':10, 'data5':3 },
+ * { 'name': 'metric three', 'data1':5, 'data2':2, 'data3':14, 'data4':12, 'data5':7 },
+ * { 'name': 'metric four', 'data1':2, 'data2':14, 'data3':6, 'data4':1, 'data5':23 },
+ * { 'name': 'metric five', 'data1':27, 'data2':38, 'data3':36, 'data4':13, 'data5':33 }
+ * ]
+ * });
+ *
+ * Ext.create('Ext.chart.Chart', {
+ * renderTo: Ext.getBody(),
+ * width: 500,
+ * height: 300,
+ * store: store,
+ * axes: [
+ * {
+ * type: 'Numeric',
+ * grid: true,
+ * position: 'left',
+ * fields: ['data1', 'data2', 'data3', 'data4', 'data5'],
+ * title: 'Sample Values',
+ * grid: {
+ * odd: {
+ * opacity: 1,
+ * fill: '#ddd',
+ * stroke: '#bbb',
+ * 'stroke-width': 1
+ * }
+ * },
+ * minimum: 0,
+ * adjustMinimumByMajorUnit: 0
+ * },
+ * {
+ * type: 'Category',
+ * position: 'bottom',
+ * fields: ['name'],
+ * title: 'Sample Metrics',
+ * grid: true,
+ * label: {
+ * rotate: {
+ * degrees: 315
+ * }
+ * }
+ * }
+ * ],
+ * series: [{
+ * type: 'area',
+ * highlight: false,
+ * axis: 'left',
+ * xField: 'name',
+ * yField: ['data1', 'data2', 'data3', 'data4', 'data5'],
+ * style: {
+ * opacity: 0.93
+ * }
+ * }]
+ * });
+ *
+ * In this configuration we set `area` as the type for the series, set highlighting options to true for highlighting elements on hover,
+ * take the left axis to measure the data in the area series, set as xField (x values) the name field of each element in the store,
+ * and as yFields (aggregated layers) seven data fields from the same store. Then we override some theming styles by adding some opacity
+ * to the style object.
+ *
+ * @xtype area
+ */
+Ext.define('Ext.chart.series.Area', {
+
+ /* Begin Definitions */
+
+ extend: 'Ext.chart.series.Cartesian',
+
+ alias: 'series.area',
+
+ requires: ['Ext.chart.axis.Axis', 'Ext.draw.Color', 'Ext.fx.Anim'],
+
+ /* End Definitions */
+
+ type: 'area',
+
+ // @private Area charts are alyways stacked
+ stacked: true,
+
+<span id='Ext-chart-series-Area-cfg-style'> /**
+</span> * @cfg {Object} style
+ * Append styling properties to this object for it to override theme properties.
+ */
+ style: {},
+
+ constructor: function(config) {
+ this.callParent(arguments);
+ var me = this,
+ surface = me.chart.surface,
+ i, l;
+ Ext.apply(me, config, {
+ __excludes: [],
+ highlightCfg: {
+ lineWidth: 3,
+ stroke: '#55c',
+ opacity: 0.8,
+ color: '#f00'
+ }
+ });
+ if (me.highlight) {
+ me.highlightSprite = surface.add({
+ type: 'path',
+ path: ['M', 0, 0],
+ zIndex: 1000,
+ opacity: 0.3,
+ lineWidth: 5,
+ hidden: true,
+ stroke: '#444'
+ });
+ }
+ me.group = surface.getGroup(me.seriesId);
+ },
+
+ // @private Shrinks dataSets down to a smaller size
+ shrink: function(xValues, yValues, size) {
+ var len = xValues.length,
+ ratio = Math.floor(len / size),
+ i, j,
+ xSum = 0,
+ yCompLen = this.areas.length,
+ ySum = [],
+ xRes = [],
+ yRes = [];
+ //initialize array
+ for (j = 0; j < yCompLen; ++j) {
+ ySum[j] = 0;
+ }
+ for (i = 0; i < len; ++i) {
+ xSum += xValues[i];
+ for (j = 0; j < yCompLen; ++j) {
+ ySum[j] += yValues[i][j];
+ }
+ if (i % ratio == 0) {
+ //push averages
+ xRes.push(xSum/ratio);
+ for (j = 0; j < yCompLen; ++j) {
+ ySum[j] /= ratio;
+ }
+ yRes.push(ySum);
+ //reset sum accumulators
+ xSum = 0;
+ for (j = 0, ySum = []; j < yCompLen; ++j) {
+ ySum[j] = 0;
+ }
+ }
+ }
+ return {
+ x: xRes,
+ y: yRes
+ };
+ },
+
+ // @private Get chart and data boundaries
+ getBounds: function() {
+ var me = this,
+ chart = me.chart,
+ store = chart.getChartStore(),
+ areas = [].concat(me.yField),
+ areasLen = areas.length,
+ xValues = [],
+ yValues = [],
+ infinity = Infinity,
+ minX = infinity,
+ minY = infinity,
+ maxX = -infinity,
+ maxY = -infinity,
+ math = Math,
+ mmin = math.min,
+ mmax = math.max,
+ bbox, xScale, yScale, xValue, yValue, areaIndex, acumY, ln, sumValues, clipBox, areaElem;
+
+ me.setBBox();
+ bbox = me.bbox;
+
+ // Run through the axis
+ if (me.axis) {
+ axis = chart.axes.get(me.axis);
+ if (axis) {
+ out = axis.calcEnds();
+ minY = out.from || axis.prevMin;
+ maxY = mmax(out.to || axis.prevMax, 0);
+ }
+ }
+
+ if (me.yField && !Ext.isNumber(minY)) {
+ axis = Ext.create('Ext.chart.axis.Axis', {
+ chart: chart,
+ fields: [].concat(me.yField)
+ });
+ out = axis.calcEnds();
+ minY = out.from || axis.prevMin;
+ maxY = mmax(out.to || axis.prevMax, 0);
+ }
+
+ if (!Ext.isNumber(minY)) {
+ minY = 0;
+ }
+ if (!Ext.isNumber(maxY)) {
+ maxY = 0;
+ }
+
+ store.each(function(record, i) {
+ xValue = record.get(me.xField);
+ yValue = [];
+ if (typeof xValue != 'number') {
+ xValue = i;
+ }
+ xValues.push(xValue);
+ acumY = 0;
+ for (areaIndex = 0; areaIndex < areasLen; areaIndex++) {
+ areaElem = record.get(areas[areaIndex]);
+ if (typeof areaElem == 'number') {
+ minY = mmin(minY, areaElem);
+ yValue.push(areaElem);
+ acumY += areaElem;
+ }
+ }
+ minX = mmin(minX, xValue);
+ maxX = mmax(maxX, xValue);
+ maxY = mmax(maxY, acumY);
+ yValues.push(yValue);
+ }, me);
+
+ xScale = bbox.width / ((maxX - minX) || 1);
+ yScale = bbox.height / ((maxY - minY) || 1);
+
+ ln = xValues.length;
+ if ((ln > bbox.width) && me.areas) {
+ sumValues = me.shrink(xValues, yValues, bbox.width);
+ xValues = sumValues.x;
+ yValues = sumValues.y;
+ }
+
+ return {
+ bbox: bbox,
+ minX: minX,
+ minY: minY,
+ xValues: xValues,
+ yValues: yValues,
+ xScale: xScale,
+ yScale: yScale,
+ areasLen: areasLen
+ };
+ },
+
+ // @private Build an array of paths for the chart
+ getPaths: function() {
+ var me = this,
+ chart = me.chart,
+ store = chart.getChartStore(),
+ first = true,
+ bounds = me.getBounds(),
+ bbox = bounds.bbox,
+ items = me.items = [],
+ componentPaths = [],
+ componentPath,
+ paths = [],
+ i, ln, x, y, xValue, yValue, acumY, areaIndex, prevAreaIndex, areaElem, path;
+
+ ln = bounds.xValues.length;
+ // Start the path
+ for (i = 0; i < ln; i++) {
+ xValue = bounds.xValues[i];
+ yValue = bounds.yValues[i];
+ x = bbox.x + (xValue - bounds.minX) * bounds.xScale;
+ acumY = 0;
+ for (areaIndex = 0; areaIndex < bounds.areasLen; areaIndex++) {
+ // Excluded series
+ if (me.__excludes[areaIndex]) {
+ continue;
+ }
+ if (!componentPaths[areaIndex]) {
+ componentPaths[areaIndex] = [];
+ }
+ areaElem = yValue[areaIndex];
+ acumY += areaElem;
+ y = bbox.y + bbox.height - (acumY - bounds.minY) * bounds.yScale;
+ if (!paths[areaIndex]) {
+ paths[areaIndex] = ['M', x, y];
+ componentPaths[areaIndex].push(['L', x, y]);
+ } else {
+ paths[areaIndex].push('L', x, y);
+ componentPaths[areaIndex].push(['L', x, y]);
+ }
+ if (!items[areaIndex]) {
+ items[areaIndex] = {
+ pointsUp: [],
+ pointsDown: [],
+ series: me
+ };
+ }
+ items[areaIndex].pointsUp.push([x, y]);
+ }
+ }
+
+ // Close the paths
+ for (areaIndex = 0; areaIndex < bounds.areasLen; areaIndex++) {
+ // Excluded series
+ if (me.__excludes[areaIndex]) {
+ continue;
+ }
+ path = paths[areaIndex];
+ // Close bottom path to the axis
+ if (areaIndex == 0 || first) {
+ first = false;
+ path.push('L', x, bbox.y + bbox.height,
+ 'L', bbox.x, bbox.y + bbox.height,
+ 'Z');
+ }
+ // Close other paths to the one before them
+ else {
+ componentPath = componentPaths[prevAreaIndex];
+ componentPath.reverse();
+ path.push('L', x, componentPath[0][2]);
+ for (i = 0; i < ln; i++) {
+ path.push(componentPath[i][0],
+ componentPath[i][1],
+ componentPath[i][2]);
+ items[areaIndex].pointsDown[ln -i -1] = [componentPath[i][1], componentPath[i][2]];