/** * @class Ext.chart.sprite.Label * @extends Ext.draw.sprite.Text * * Sprite used to represent labels in series. * * Important: the actual default values are determined by the theme used. * Please see the `label` config of the {@link Ext.chart.theme.Base#axis}. */Ext.define('Ext.chart.sprite.Label', { extend: 'Ext.draw.sprite.Text', alternateClassName: 'Ext.chart.label.Label', requires: ['Ext.chart.modifier.Callout'], inheritableStatics: { def: { processors: { callout: 'limited01', // Meant to be set by the Callout modifier only. calloutHasLine: 'bool', // The position where the callout would end, if not for the label: // callout stops at the bounding box of the label, // so the actual point where the callout ends - calloutEndX/Y - // is calculated by the Callout modifier. calloutPlaceX: 'number', calloutPlaceY: 'number', // The start/end points used to render the callout line. calloutStartX: 'number', calloutStartY: 'number', calloutEndX: 'number', calloutEndY: 'number', calloutColor: 'color', calloutWidth: 'number', calloutVertical: 'bool', labelOverflowPadding: 'number', display: 'enums(none,under,over,rotate,insideStart,insideEnd,inside,outside)', orientation: 'enums(horizontal,vertical)', renderer: 'default' }, defaults: { callout: 0, calloutHasLine: true, calloutPlaceX: 0, calloutPlaceY: 0, calloutStartX: 0, calloutStartY: 0, calloutEndX: 0, calloutEndY: 0, calloutWidth: 1, calloutVertical: false, calloutColor: 'black', labelOverflowPadding: 5, display: 'none', orientation: '', renderer: null }, triggers: { callout: 'transform', calloutPlaceX: 'transform', calloutPlaceY: 'transform', labelOverflowPadding: 'transform', calloutRotation: 'transform', display: 'hidden' }, updaters: { hidden: function(attr) { attr.hidden = (attr.display === 'none'); } } } }, config: { /** * @cfg {Object} fx Animation configuration. */ animation: { customDurations: { callout: 200 } }, /** * @cfg {String} field The store record field used by the label sprite. * * Note: the label sprite is typically used indirectly (by a Ext.chart.MarkerHolder * series sprite, via a Ext.chart.Markers sprite, where the latter is passed to the * label renderer), so to get to the label field one has to do: * * renderer: function (text, sprite, config, data, index) { * var field = sprite.getTemplate().getField(); * } * * To get the actual label sprite instance one can use: * * sprite.get(index) * */ field: null, /** * @cfg {Boolean|Object} calloutLine * * True to draw a line between the label and the chart with the default settings, * or an Object that defines the 'color', 'width' and 'length' properties of the line. * This config is only applicable when the label is displayed outside the chart. * * Default value: false. */ calloutLine: true, /** * @cfg {Number} [hideLessThan=20] * Hides labels for pie slices with segment length less than this value (in pixels). */ hideLessThan: 20 }, applyCalloutLine: function(calloutLine) { if (calloutLine) { return Ext.apply({}, calloutLine); } return calloutLine; }, createModifiers: function() { var me = this, mods = me.callParent(arguments); mods.callout = new Ext.chart.modifier.Callout({ sprite: me }); mods.animation.setUpper(mods.callout); mods.callout.setUpper(mods.target); }, render: function(surface, ctx) { var me = this, attr = me.attr, calloutColor = attr.calloutColor; ctx.save(); ctx.globalAlpha *= attr.callout; if (ctx.globalAlpha > 0 && attr.calloutHasLine) { if (calloutColor && calloutColor.isGradient) { calloutColor = calloutColor.getStops()[0].color; } ctx.strokeStyle = calloutColor; ctx.fillStyle = calloutColor; ctx.lineWidth = attr.calloutWidth; ctx.beginPath(); ctx.moveTo(me.attr.calloutStartX, me.attr.calloutStartY); ctx.lineTo(me.attr.calloutEndX, me.attr.calloutEndY); ctx.stroke(); ctx.beginPath(); ctx.arc(me.attr.calloutStartX, me.attr.calloutStartY, 1 * attr.calloutWidth, 0, 2 * Math.PI, true); ctx.fill(); ctx.beginPath(); ctx.arc(me.attr.calloutEndX, me.attr.calloutEndY, 1 * attr.calloutWidth, 0, 2 * Math.PI, true); ctx.fill(); } ctx.restore(); Ext.draw.sprite.Text.prototype.render.apply(me, arguments); }});