X-Git-Url: http://git.ithinksw.org/extjs.git/blobdiff_plain/0494b8d9b9bb03ab6c22b34dae81261e3cd7e3e6..7a654f8d43fdb43d78b63d90528bed6e86b608cc:/src/chart/Chart.js?ds=inline
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+/**
+ * @class Ext.chart.Chart
+ * @extends Ext.draw.Component
+ *
+ * The Ext.chart package provides the capability to visualize data.
+ * Each chart binds directly to an Ext.data.Store enabling automatic updates of the chart.
+ * A chart configuration object has some overall styling options as well as an array of axes
+ * and series. A chart instance example could look like:
+ *
+
+ Ext.create('Ext.chart.Chart', {
+ renderTo: Ext.getBody(),
+ width: 800,
+ height: 600,
+ animate: true,
+ store: store1,
+ shadow: true,
+ theme: 'Category1',
+ legend: {
+ position: 'right'
+ },
+ axes: [ ...some axes options... ],
+ series: [ ...some series options... ]
+ });
+
+ *
+ * In this example we set the `width` and `height` of the chart, we decide whether our series are
+ * animated or not and we select a store to be bound to the chart. We also turn on shadows for all series,
+ * select a color theme `Category1` for coloring the series, set the legend to the right part of the chart and
+ * then tell the chart to render itself in the body element of the document. For more information about the axes and
+ * series configurations please check the documentation of each series (Line, Bar, Pie, etc).
+ *
+ * @xtype chart
+ */
+
+Ext.define('Ext.chart.Chart', {
+
+ /* Begin Definitions */
+
+ alias: 'widget.chart',
+
+ extend: 'Ext.draw.Component',
+
+ mixins: {
+ themeManager: 'Ext.chart.theme.Theme',
+ mask: 'Ext.chart.Mask',
+ navigation: 'Ext.chart.Navigation'
+ },
+
+ requires: [
+ 'Ext.util.MixedCollection',
+ 'Ext.data.StoreManager',
+ 'Ext.chart.Legend',
+ 'Ext.util.DelayedTask'
+ ],
+
+ /* End Definitions */
+
+ // @private
+ viewBox: false,
+
+ /**
+ * @cfg {String} theme (optional) The name of the theme to be used. A theme defines the colors and
+ * other visual displays of tick marks on axis, text, title text, line colors, marker colors and styles, etc.
+ * Possible theme values are 'Base', 'Green', 'Sky', 'Red', 'Purple', 'Blue', 'Yellow' and also six category themes
+ * 'Category1' to 'Category6'. Default value is 'Base'.
+ */
+
+ /**
+ * @cfg {Boolean/Object} animate (optional) true for the default animation (easing: 'ease' and duration: 500)
+ * or a standard animation config object to be used for default chart animations. Defaults to false.
+ */
+ animate: false,
+
+ /**
+ * @cfg {Boolean/Object} legend (optional) true for the default legend display or a legend config object. Defaults to false.
+ */
+ legend: false,
+
+ /**
+ * @cfg {integer} insetPadding (optional) Set the amount of inset padding in pixels for the chart. Defaults to 10.
+ */
+ insetPadding: 10,
+
+ /**
+ * @cfg {Array} enginePriority
+ * Defines the priority order for which Surface implementation to use. The first
+ * one supported by the current environment will be used.
+ */
+ enginePriority: ['Svg', 'Vml'],
+
+ /**
+ * @cfg {Object|Boolean} background (optional) Set the chart background. This can be a gradient object, image, or color.
+ * Defaults to false for no background.
+ *
+ * For example, if `background` were to be a color we could set the object as
+ *
+
+ background: {
+ //color string
+ fill: '#ccc'
+ }
+
+
+ You can specify an image by using:
+
+
+ background: {
+ image: 'http://path.to.image/'
+ }
+
+
+ Also you can specify a gradient by using the gradient object syntax:
+
+
+ background: {
+ gradient: {
+ id: 'gradientId',
+ angle: 45,
+ stops: {
+ 0: {
+ color: '#555'
+ }
+ 100: {
+ color: '#ddd'
+ }
+ }
+ }
+ }
+
+ */
+ background: false,
+
+ /**
+ * @cfg {Array} gradients (optional) Define a set of gradients that can be used as `fill` property in sprites.
+ * The gradients array is an array of objects with the following properties:
+ *
+ *
+ * - id - string - The unique name of the gradient.
+ * - angle - number, optional - The angle of the gradient in degrees.
+ * - stops - object - An object with numbers as keys (from 0 to 100) and style objects
+ * as values
+ *
+ *
+
+ For example:
+
+
+ gradients: [{
+ id: 'gradientId',
+ angle: 45,
+ stops: {
+ 0: {
+ color: '#555'
+ },
+ 100: {
+ color: '#ddd'
+ }
+ }
+ }, {
+ id: 'gradientId2',
+ angle: 0,
+ stops: {
+ 0: {
+ color: '#590'
+ },
+ 20: {
+ color: '#599'
+ },
+ 100: {
+ color: '#ddd'
+ }
+ }
+ }]
+
+
+ Then the sprites can use `gradientId` and `gradientId2` by setting the fill attributes to those ids, for example:
+
+
+ sprite.setAttributes({
+ fill: 'url(#gradientId)'
+ }, true);
+
+
+ */
+
+
+ constructor: function(config) {
+ var me = this,
+ defaultAnim;
+ me.initTheme(config.theme || me.theme);
+ if (me.gradients) {
+ Ext.apply(config, { gradients: me.gradients });
+ }
+ if (me.background) {
+ Ext.apply(config, { background: me.background });
+ }
+ if (config.animate) {
+ defaultAnim = {
+ easing: 'ease',
+ duration: 500
+ };
+ if (Ext.isObject(config.animate)) {
+ config.animate = Ext.applyIf(config.animate, defaultAnim);
+ }
+ else {
+ config.animate = defaultAnim;
+ }
+ }
+ me.mixins.mask.constructor.call(me, config);
+ me.mixins.navigation.constructor.call(me, config);
+ me.callParent([config]);
+ },
+
+ initComponent: function() {
+ var me = this,
+ axes,
+ series;
+ me.callParent();
+ me.addEvents(
+ 'itemmousedown',
+ 'itemmouseup',
+ 'itemmouseover',
+ 'itemmouseout',
+ 'itemclick',
+ 'itemdoubleclick',
+ 'itemdragstart',
+ 'itemdrag',
+ 'itemdragend',
+ /**
+ * @event beforerefresh
+ * Fires before a refresh to the chart data is called. If the beforerefresh handler returns
+ * false the {@link #refresh} action will be cancelled.
+ * @param {Chart} this
+ */
+ 'beforerefresh',
+ /**
+ * @event refresh
+ * Fires after the chart data has been refreshed.
+ * @param {Chart} this
+ */
+ 'refresh'
+ );
+ Ext.applyIf(me, {
+ zoom: {
+ width: 1,
+ height: 1,
+ x: 0,
+ y: 0
+ }
+ });
+ me.maxGutter = [0, 0];
+ me.store = Ext.data.StoreManager.lookup(me.store);
+ axes = me.axes;
+ me.axes = Ext.create('Ext.util.MixedCollection', false, function(a) { return a.position; });
+ if (axes) {
+ me.axes.addAll(axes);
+ }
+ series = me.series;
+ me.series = Ext.create('Ext.util.MixedCollection', false, function(a) { return a.seriesId || (a.seriesId = Ext.id(null, 'ext-chart-series-')); });
+ if (series) {
+ me.series.addAll(series);
+ }
+ if (me.legend !== false) {
+ me.legend = Ext.create('Ext.chart.Legend', Ext.applyIf({chart:me}, me.legend));
+ }
+
+ me.on({
+ mousemove: me.onMouseMove,
+ mouseleave: me.onMouseLeave,
+ mousedown: me.onMouseDown,
+ mouseup: me.onMouseUp,
+ scope: me
+ });
+ },
+
+ // @private overrides the component method to set the correct dimensions to the chart.
+ afterComponentLayout: function(width, height) {
+ var me = this;
+ if (Ext.isNumber(width) && Ext.isNumber(height)) {
+ me.curWidth = width;
+ me.curHeight = height;
+ me.redraw(true);
+ }
+ this.callParent(arguments);
+ },
+
+ /**
+ * Redraw the chart. If animations are set this will animate the chart too.
+ * @cfg {boolean} resize Optional flag which changes the default origin points of the chart for animations.
+ */
+ redraw: function(resize) {
+ var me = this,
+ chartBBox = me.chartBBox = {
+ x: 0,
+ y: 0,
+ height: me.curHeight,
+ width: me.curWidth
+ },
+ legend = me.legend;
+ me.surface.setSize(chartBBox.width, chartBBox.height);
+ // Instantiate Series and Axes
+ me.series.each(me.initializeSeries, me);
+ me.axes.each(me.initializeAxis, me);
+ //process all views (aggregated data etc) on stores
+ //before rendering.
+ me.axes.each(function(axis) {
+ axis.processView();
+ });
+ me.axes.each(function(axis) {
+ axis.drawAxis(true);
+ });
+
+ // Create legend if not already created
+ if (legend !== false) {
+ legend.create();
+ }
+
+ // Place axes properly, including influence from each other
+ me.alignAxes();
+
+ // Reposition legend based on new axis alignment
+ if (me.legend !== false) {
+ legend.updatePosition();
+ }
+
+ // Find the max gutter
+ me.getMaxGutter();
+
+ // Draw axes and series
+ me.resizing = !!resize;
+
+ me.axes.each(me.drawAxis, me);
+ me.series.each(me.drawCharts, me);
+ me.resizing = false;
+ },
+
+ // @private set the store after rendering the chart.
+ afterRender: function() {
+ var ref,
+ me = this;
+ this.callParent();
+
+ if (me.categoryNames) {
+ me.setCategoryNames(me.categoryNames);
+ }
+
+ if (me.tipRenderer) {
+ ref = me.getFunctionRef(me.tipRenderer);
+ me.setTipRenderer(ref.fn, ref.scope);
+ }
+ me.bindStore(me.store, true);
+ me.refresh();
+ },
+
+ // @private get x and y position of the mouse cursor.
+ getEventXY: function(e) {
+ var me = this,
+ box = this.surface.getRegion(),
+ pageXY = e.getXY(),
+ x = pageXY[0] - box.left,
+ y = pageXY[1] - box.top;
+ return [x, y];
+ },
+
+ // @private wrap the mouse down position to delegate the event to the series.
+ onClick: function(e) {
+ var me = this,
+ position = me.getEventXY(e),
+ item;
+
+ // Ask each series if it has an item corresponding to (not necessarily exactly
+ // on top of) the current mouse coords. Fire itemclick event.
+ me.series.each(function(series) {
+ if (Ext.draw.Draw.withinBox(position[0], position[1], series.bbox)) {
+ if (series.getItemForPoint) {
+ item = series.getItemForPoint(position[0], position[1]);
+ if (item) {
+ series.fireEvent('itemclick', item);
+ }
+ }
+ }
+ }, me);
+ },
+
+ // @private wrap the mouse down position to delegate the event to the series.
+ onMouseDown: function(e) {
+ var me = this,
+ position = me.getEventXY(e),
+ item;
+
+ if (me.mask) {
+ me.mixins.mask.onMouseDown.call(me, e);
+ }
+ // Ask each series if it has an item corresponding to (not necessarily exactly
+ // on top of) the current mouse coords. Fire mousedown event.
+ me.series.each(function(series) {
+ if (Ext.draw.Draw.withinBox(position[0], position[1], series.bbox)) {
+ if (series.getItemForPoint) {
+ item = series.getItemForPoint(position[0], position[1]);
+ if (item) {
+ series.fireEvent('itemmousedown', item);
+ }
+ }
+ }
+ }, me);
+ },
+
+ // @private wrap the mouse up event to delegate it to the series.
+ onMouseUp: function(e) {
+ var me = this,
+ position = me.getEventXY(e),
+ item;
+
+ if (me.mask) {
+ me.mixins.mask.onMouseUp.call(me, e);
+ }
+ // Ask each series if it has an item corresponding to (not necessarily exactly
+ // on top of) the current mouse coords. Fire mousedown event.
+ me.series.each(function(series) {
+ if (Ext.draw.Draw.withinBox(position[0], position[1], series.bbox)) {
+ if (series.getItemForPoint) {
+ item = series.getItemForPoint(position[0], position[1]);
+ if (item) {
+ series.fireEvent('itemmouseup', item);
+ }
+ }
+ }
+ }, me);
+ },
+
+ // @private wrap the mouse move event so it can be delegated to the series.
+ onMouseMove: function(e) {
+ var me = this,
+ position = me.getEventXY(e),
+ item, last, storeItem, storeField;
+
+ if (me.mask) {
+ me.mixins.mask.onMouseMove.call(me, e);
+ }
+ // Ask each series if it has an item corresponding to (not necessarily exactly
+ // on top of) the current mouse coords. Fire itemmouseover/out events.
+ me.series.each(function(series) {
+ if (Ext.draw.Draw.withinBox(position[0], position[1], series.bbox)) {
+ if (series.getItemForPoint) {
+ item = series.getItemForPoint(position[0], position[1]);
+ last = series._lastItemForPoint;
+ storeItem = series._lastStoreItem;
+ storeField = series._lastStoreField;
+
+
+ if (item !== last || item && (item.storeItem != storeItem || item.storeField != storeField)) {
+ if (last) {
+ series.fireEvent('itemmouseout', last);
+ delete series._lastItemForPoint;
+ delete series._lastStoreField;
+ delete series._lastStoreItem;
+ }
+ if (item) {
+ series.fireEvent('itemmouseover', item);
+ series._lastItemForPoint = item;
+ series._lastStoreItem = item.storeItem;
+ series._lastStoreField = item.storeField;
+ }
+ }
+ }
+ } else {
+ last = series._lastItemForPoint;
+ if (last) {
+ series.fireEvent('itemmouseout', last);
+ delete series._lastItemForPoint;
+ delete series._lastStoreField;
+ delete series._lastStoreItem;
+ }
+ }
+ }, me);
+ },
+
+ // @private handle mouse leave event.
+ onMouseLeave: function(e) {
+ var me = this;
+ if (me.mask) {
+ me.mixins.mask.onMouseLeave.call(me, e);
+ }
+ me.series.each(function(series) {
+ delete series._lastItemForPoint;
+ });
+ },
+
+ // @private buffered refresh for when we update the store
+ delayRefresh: function() {
+ var me = this;
+ if (!me.refreshTask) {
+ me.refreshTask = Ext.create('Ext.util.DelayedTask', me.refresh, me);
+ }
+ me.refreshTask.delay(me.refreshBuffer);
+ },
+
+ // @private
+ refresh: function() {
+ var me = this;
+ if (me.rendered && me.curWidth != undefined && me.curHeight != undefined) {
+ if (me.fireEvent('beforerefresh', me) !== false) {
+ me.redraw();
+ me.fireEvent('refresh', me);
+ }
+ }
+ },
+
+ /**
+ * Changes the data store bound to this chart and refreshes it.
+ * @param {Store} store The store to bind to this chart
+ */
+ bindStore: function(store, initial) {
+ var me = this;
+ if (!initial && me.store) {
+ if (store !== me.store && me.store.autoDestroy) {
+ me.store.destroy();
+ }
+ else {
+ me.store.un('datachanged', me.refresh, me);
+ me.store.un('add', me.delayRefresh, me);
+ me.store.un('remove', me.delayRefresh, me);
+ me.store.un('update', me.delayRefresh, me);
+ me.store.un('clear', me.refresh, me);
+ }
+ }
+ if (store) {
+ store = Ext.data.StoreManager.lookup(store);
+ store.on({
+ scope: me,
+ datachanged: me.refresh,
+ add: me.delayRefresh,
+ remove: me.delayRefresh,
+ update: me.delayRefresh,
+ clear: me.refresh
+ });
+ }
+ me.store = store;
+ if (store && !initial) {
+ me.refresh();
+ }
+ },
+
+ // @private Create Axis
+ initializeAxis: function(axis) {
+ var me = this,
+ chartBBox = me.chartBBox,
+ w = chartBBox.width,
+ h = chartBBox.height,
+ x = chartBBox.x,
+ y = chartBBox.y,
+ themeAttrs = me.themeAttrs,
+ config = {
+ chart: me
+ };
+ if (themeAttrs) {
+ config.axisStyle = Ext.apply({}, themeAttrs.axis);
+ config.axisLabelLeftStyle = Ext.apply({}, themeAttrs.axisLabelLeft);
+ config.axisLabelRightStyle = Ext.apply({}, themeAttrs.axisLabelRight);
+ config.axisLabelTopStyle = Ext.apply({}, themeAttrs.axisLabelTop);
+ config.axisLabelBottomStyle = Ext.apply({}, themeAttrs.axisLabelBottom);
+ config.axisTitleLeftStyle = Ext.apply({}, themeAttrs.axisTitleLeft);
+ config.axisTitleRightStyle = Ext.apply({}, themeAttrs.axisTitleRight);
+ config.axisTitleTopStyle = Ext.apply({}, themeAttrs.axisTitleTop);
+ config.axisTitleBottomStyle = Ext.apply({}, themeAttrs.axisTitleBottom);
+ }
+ switch (axis.position) {
+ case 'top':
+ Ext.apply(config, {
+ length: w,
+ width: h,
+ x: x,
+ y: y
+ });
+ break;
+ case 'bottom':
+ Ext.apply(config, {
+ length: w,
+ width: h,
+ x: x,
+ y: h
+ });
+ break;
+ case 'left':
+ Ext.apply(config, {
+ length: h,
+ width: w,
+ x: x,
+ y: h
+ });
+ break;
+ case 'right':
+ Ext.apply(config, {
+ length: h,
+ width: w,
+ x: w,
+ y: h
+ });
+ break;
+ }
+ if (!axis.chart) {
+ Ext.apply(config, axis);
+ axis = me.axes.replace(Ext.createByAlias('axis.' + axis.type.toLowerCase(), config));
+ }
+ else {
+ Ext.apply(axis, config);
+ }
+ },
+
+
+ /**
+ * @private Adjust the dimensions and positions of each axis and the chart body area after accounting
+ * for the space taken up on each side by the axes and legend.
+ */
+ alignAxes: function() {
+ var me = this,
+ axes = me.axes,
+ legend = me.legend,
+ edges = ['top', 'right', 'bottom', 'left'],
+ chartBBox,
+ insetPadding = me.insetPadding,
+ insets = {
+ top: insetPadding,
+ right: insetPadding,
+ bottom: insetPadding,
+ left: insetPadding
+ };
+
+ function getAxis(edge) {
+ var i = axes.findIndex('position', edge);
+ return (i < 0) ? null : axes.getAt(i);
+ }
+
+ // Find the space needed by axes and legend as a positive inset from each edge
+ Ext.each(edges, function(edge) {
+ var isVertical = (edge === 'left' || edge === 'right'),
+ axis = getAxis(edge),
+ bbox;
+
+ // Add legend size if it's on this edge
+ if (legend !== false) {
+ if (legend.position === edge) {
+ bbox = legend.getBBox();
+ insets[edge] += (isVertical ? bbox.width : bbox.height) + insets[edge];
+ }
+ }
+
+ // Add axis size if there's one on this edge only if it has been
+ //drawn before.
+ if (axis && axis.bbox) {
+ bbox = axis.bbox;
+ insets[edge] += (isVertical ? bbox.width : bbox.height);
+ }
+ });
+ // Build the chart bbox based on the collected inset values
+ chartBBox = {
+ x: insets.left,
+ y: insets.top,
+ width: me.curWidth - insets.left - insets.right,
+ height: me.curHeight - insets.top - insets.bottom
+ };
+ me.chartBBox = chartBBox;
+
+ // Go back through each axis and set its length and position based on the
+ // corresponding edge of the chartBBox
+ axes.each(function(axis) {
+ var pos = axis.position,
+ isVertical = (pos === 'left' || pos === 'right');
+
+ axis.x = (pos === 'right' ? chartBBox.x + chartBBox.width : chartBBox.x);
+ axis.y = (pos === 'top' ? chartBBox.y : chartBBox.y + chartBBox.height);
+ axis.width = (isVertical ? chartBBox.width : chartBBox.height);
+ axis.length = (isVertical ? chartBBox.height : chartBBox.width);
+ });
+ },
+
+ // @private initialize the series.
+ initializeSeries: function(series, idx) {
+ var me = this,
+ themeAttrs = me.themeAttrs,
+ seriesObj, markerObj, seriesThemes, st,
+ markerThemes, colorArrayStyle = [],
+ i = 0, l,
+ config = {
+ chart: me,
+ seriesId: series.seriesId
+ };
+ if (themeAttrs) {
+ seriesThemes = themeAttrs.seriesThemes;
+ markerThemes = themeAttrs.markerThemes;
+ seriesObj = Ext.apply({}, themeAttrs.series);
+ markerObj = Ext.apply({}, themeAttrs.marker);
+ config.seriesStyle = Ext.apply(seriesObj, seriesThemes[idx % seriesThemes.length]);
+ config.seriesLabelStyle = Ext.apply({}, themeAttrs.seriesLabel);
+ config.markerStyle = Ext.apply(markerObj, markerThemes[idx % markerThemes.length]);
+ if (themeAttrs.colors) {
+ config.colorArrayStyle = themeAttrs.colors;
+ } else {
+ colorArrayStyle = [];
+ for (l = seriesThemes.length; i < l; i++) {
+ st = seriesThemes[i];
+ if (st.fill || st.stroke) {
+ colorArrayStyle.push(st.fill || st.stroke);
+ }
+ }
+ if (colorArrayStyle.length) {
+ config.colorArrayStyle = colorArrayStyle;
+ }
+ }
+ config.seriesIdx = idx;
+ }
+ if (series instanceof Ext.chart.series.Series) {
+ Ext.apply(series, config);
+ } else {
+ Ext.applyIf(config, series);
+ series = me.series.replace(Ext.createByAlias('series.' + series.type.toLowerCase(), config));
+ }
+ if (series.initialize) {
+ series.initialize();
+ }
+ },
+
+ // @private
+ getMaxGutter: function() {
+ var me = this,
+ maxGutter = [0, 0];
+ me.series.each(function(s) {
+ var gutter = s.getGutters && s.getGutters() || [0, 0];
+ maxGutter[0] = Math.max(maxGutter[0], gutter[0]);
+ maxGutter[1] = Math.max(maxGutter[1], gutter[1]);
+ });
+ me.maxGutter = maxGutter;
+ },
+
+ // @private draw axis.
+ drawAxis: function(axis) {
+ axis.drawAxis();
+ },
+
+ // @private draw series.
+ drawCharts: function(series) {
+ series.triggerafterrender = false;
+ series.drawSeries();
+ if (!this.animate) {
+ series.fireEvent('afterrender');
+ }
+ },
+
+ // @private remove gently.
+ destroy: function() {
+ this.surface.destroy();
+ this.bindStore(null);
+ this.callParent(arguments);
+ }
+});