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								template_static/lib/jquery.flot.pie.js
									
									
									
									
									
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								template_static/lib/jquery.flot.pie.js
									
									
									
									
									
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							| @@ -0,0 +1,820 @@ | ||||
| /* Flot plugin for rendering pie charts. | ||||
|  | ||||
| Copyright (c) 2007-2014 IOLA and Ole Laursen. | ||||
| Licensed under the MIT license. | ||||
|  | ||||
| The plugin assumes that each series has a single data value, and that each | ||||
| value is a positive integer or zero.  Negative numbers don't make sense for a | ||||
| pie chart, and have unpredictable results.  The values do NOT need to be | ||||
| passed in as percentages; the plugin will calculate the total and per-slice | ||||
| percentages internally. | ||||
|  | ||||
| * Created by Brian Medendorp | ||||
|  | ||||
| * Updated with contributions from btburnett3, Anthony Aragues and Xavi Ivars | ||||
|  | ||||
| The plugin supports these options: | ||||
|  | ||||
| 	series: { | ||||
| 		pie: { | ||||
| 			show: true/false | ||||
| 			radius: 0-1 for percentage of fullsize, or a specified pixel length, or 'auto' | ||||
| 			innerRadius: 0-1 for percentage of fullsize or a specified pixel length, for creating a donut effect | ||||
| 			startAngle: 0-2 factor of PI used for starting angle (in radians) i.e 3/2 starts at the top, 0 and 2 have the same result | ||||
| 			tilt: 0-1 for percentage to tilt the pie, where 1 is no tilt, and 0 is completely flat (nothing will show) | ||||
| 			offset: { | ||||
| 				top: integer value to move the pie up or down | ||||
| 				left: integer value to move the pie left or right, or 'auto' | ||||
| 			}, | ||||
| 			stroke: { | ||||
| 				color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#FFF') | ||||
| 				width: integer pixel width of the stroke | ||||
| 			}, | ||||
| 			label: { | ||||
| 				show: true/false, or 'auto' | ||||
| 				formatter:  a user-defined function that modifies the text/style of the label text | ||||
| 				radius: 0-1 for percentage of fullsize, or a specified pixel length | ||||
| 				background: { | ||||
| 					color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#000') | ||||
| 					opacity: 0-1 | ||||
| 				}, | ||||
| 				threshold: 0-1 for the percentage value at which to hide labels (if they're too small) | ||||
| 			}, | ||||
| 			combine: { | ||||
| 				threshold: 0-1 for the percentage value at which to combine slices (if they're too small) | ||||
| 				color: any hexidecimal color value (other formats may or may not work, so best to stick with something like '#CCC'), if null, the plugin will automatically use the color of the first slice to be combined | ||||
| 				label: any text value of what the combined slice should be labeled | ||||
| 			} | ||||
| 			highlight: { | ||||
| 				opacity: 0-1 | ||||
| 			} | ||||
| 		} | ||||
| 	} | ||||
|  | ||||
| More detail and specific examples can be found in the included HTML file. | ||||
|  | ||||
| */ | ||||
|  | ||||
| (function($) { | ||||
|  | ||||
| 	// Maximum redraw attempts when fitting labels within the plot | ||||
|  | ||||
| 	var REDRAW_ATTEMPTS = 10; | ||||
|  | ||||
| 	// Factor by which to shrink the pie when fitting labels within the plot | ||||
|  | ||||
| 	var REDRAW_SHRINK = 0.95; | ||||
|  | ||||
| 	function init(plot) { | ||||
|  | ||||
| 		var canvas = null, | ||||
| 			target = null, | ||||
| 			options = null, | ||||
| 			maxRadius = null, | ||||
| 			centerLeft = null, | ||||
| 			centerTop = null, | ||||
| 			processed = false, | ||||
| 			ctx = null; | ||||
|  | ||||
| 		// interactive variables | ||||
|  | ||||
| 		var highlights = []; | ||||
|  | ||||
| 		// add hook to determine if pie plugin in enabled, and then perform necessary operations | ||||
|  | ||||
| 		plot.hooks.processOptions.push(function(plot, options) { | ||||
| 			if (options.series.pie.show) { | ||||
|  | ||||
| 				options.grid.show = false; | ||||
|  | ||||
| 				// set labels.show | ||||
|  | ||||
| 				if (options.series.pie.label.show == "auto") { | ||||
| 					if (options.legend.show) { | ||||
| 						options.series.pie.label.show = false; | ||||
| 					} else { | ||||
| 						options.series.pie.label.show = true; | ||||
| 					} | ||||
| 				} | ||||
|  | ||||
| 				// set radius | ||||
|  | ||||
| 				if (options.series.pie.radius == "auto") { | ||||
| 					if (options.series.pie.label.show) { | ||||
| 						options.series.pie.radius = 3/4; | ||||
| 					} else { | ||||
| 						options.series.pie.radius = 1; | ||||
| 					} | ||||
| 				} | ||||
|  | ||||
| 				// ensure sane tilt | ||||
|  | ||||
| 				if (options.series.pie.tilt > 1) { | ||||
| 					options.series.pie.tilt = 1; | ||||
| 				} else if (options.series.pie.tilt < 0) { | ||||
| 					options.series.pie.tilt = 0; | ||||
| 				} | ||||
| 			} | ||||
| 		}); | ||||
|  | ||||
| 		plot.hooks.bindEvents.push(function(plot, eventHolder) { | ||||
| 			var options = plot.getOptions(); | ||||
| 			if (options.series.pie.show) { | ||||
| 				if (options.grid.hoverable) { | ||||
| 					eventHolder.unbind("mousemove").mousemove(onMouseMove); | ||||
| 				} | ||||
| 				if (options.grid.clickable) { | ||||
| 					eventHolder.unbind("click").click(onClick); | ||||
| 				} | ||||
| 			} | ||||
| 		}); | ||||
|  | ||||
| 		plot.hooks.processDatapoints.push(function(plot, series, data, datapoints) { | ||||
| 			var options = plot.getOptions(); | ||||
| 			if (options.series.pie.show) { | ||||
| 				processDatapoints(plot, series, data, datapoints); | ||||
| 			} | ||||
| 		}); | ||||
|  | ||||
| 		plot.hooks.drawOverlay.push(function(plot, octx) { | ||||
| 			var options = plot.getOptions(); | ||||
| 			if (options.series.pie.show) { | ||||
| 				drawOverlay(plot, octx); | ||||
| 			} | ||||
| 		}); | ||||
|  | ||||
| 		plot.hooks.draw.push(function(plot, newCtx) { | ||||
| 			var options = plot.getOptions(); | ||||
| 			if (options.series.pie.show) { | ||||
| 				draw(plot, newCtx); | ||||
| 			} | ||||
| 		}); | ||||
|  | ||||
| 		function processDatapoints(plot, series, datapoints) { | ||||
| 			if (!processed)	{ | ||||
| 				processed = true; | ||||
| 				canvas = plot.getCanvas(); | ||||
| 				target = $(canvas).parent(); | ||||
| 				options = plot.getOptions(); | ||||
| 				plot.setData(combine(plot.getData())); | ||||
| 			} | ||||
| 		} | ||||
|  | ||||
| 		function combine(data) { | ||||
|  | ||||
| 			var total = 0, | ||||
| 				combined = 0, | ||||
| 				numCombined = 0, | ||||
| 				color = options.series.pie.combine.color, | ||||
| 				newdata = []; | ||||
|  | ||||
| 			// Fix up the raw data from Flot, ensuring the data is numeric | ||||
|  | ||||
| 			for (var i = 0; i < data.length; ++i) { | ||||
|  | ||||
| 				var value = data[i].data; | ||||
|  | ||||
| 				// If the data is an array, we'll assume that it's a standard | ||||
| 				// Flot x-y pair, and are concerned only with the second value. | ||||
|  | ||||
| 				// Note how we use the original array, rather than creating a | ||||
| 				// new one; this is more efficient and preserves any extra data | ||||
| 				// that the user may have stored in higher indexes. | ||||
|  | ||||
| 				if ($.isArray(value) && value.length == 1) { | ||||
|     				value = value[0]; | ||||
| 				} | ||||
|  | ||||
| 				if ($.isArray(value)) { | ||||
| 					// Equivalent to $.isNumeric() but compatible with jQuery < 1.7 | ||||
| 					if (!isNaN(parseFloat(value[1])) && isFinite(value[1])) { | ||||
| 						value[1] = +value[1]; | ||||
| 					} else { | ||||
| 						value[1] = 0; | ||||
| 					} | ||||
| 				} else if (!isNaN(parseFloat(value)) && isFinite(value)) { | ||||
| 					value = [1, +value]; | ||||
| 				} else { | ||||
| 					value = [1, 0]; | ||||
| 				} | ||||
|  | ||||
| 				data[i].data = [value]; | ||||
| 			} | ||||
|  | ||||
| 			// Sum up all the slices, so we can calculate percentages for each | ||||
|  | ||||
| 			for (var i = 0; i < data.length; ++i) { | ||||
| 				total += data[i].data[0][1]; | ||||
| 			} | ||||
|  | ||||
| 			// Count the number of slices with percentages below the combine | ||||
| 			// threshold; if it turns out to be just one, we won't combine. | ||||
|  | ||||
| 			for (var i = 0; i < data.length; ++i) { | ||||
| 				var value = data[i].data[0][1]; | ||||
| 				if (value / total <= options.series.pie.combine.threshold) { | ||||
| 					combined += value; | ||||
| 					numCombined++; | ||||
| 					if (!color) { | ||||
| 						color = data[i].color; | ||||
| 					} | ||||
| 				} | ||||
| 			} | ||||
|  | ||||
| 			for (var i = 0; i < data.length; ++i) { | ||||
| 				var value = data[i].data[0][1]; | ||||
| 				if (numCombined < 2 || value / total > options.series.pie.combine.threshold) { | ||||
| 					newdata.push( | ||||
| 						$.extend(data[i], {     /* extend to allow keeping all other original data values | ||||
| 						                           and using them e.g. in labelFormatter. */ | ||||
| 							data: [[1, value]], | ||||
| 							color: data[i].color, | ||||
| 							label: data[i].label, | ||||
| 							angle: value * Math.PI * 2 / total, | ||||
| 							percent: value / (total / 100) | ||||
| 						}) | ||||
| 					); | ||||
| 				} | ||||
| 			} | ||||
|  | ||||
| 			if (numCombined > 1) { | ||||
| 				newdata.push({ | ||||
| 					data: [[1, combined]], | ||||
| 					color: color, | ||||
| 					label: options.series.pie.combine.label, | ||||
| 					angle: combined * Math.PI * 2 / total, | ||||
| 					percent: combined / (total / 100) | ||||
| 				}); | ||||
| 			} | ||||
|  | ||||
| 			return newdata; | ||||
| 		} | ||||
|  | ||||
| 		function draw(plot, newCtx) { | ||||
|  | ||||
| 			if (!target) { | ||||
| 				return; // if no series were passed | ||||
| 			} | ||||
|  | ||||
| 			var canvasWidth = plot.getPlaceholder().width(), | ||||
| 				canvasHeight = plot.getPlaceholder().height(), | ||||
| 				legendWidth = target.children().filter(".legend").children().width() || 0; | ||||
|  | ||||
| 			ctx = newCtx; | ||||
|  | ||||
| 			// WARNING: HACK! REWRITE THIS CODE AS SOON AS POSSIBLE! | ||||
|  | ||||
| 			// When combining smaller slices into an 'other' slice, we need to | ||||
| 			// add a new series.  Since Flot gives plugins no way to modify the | ||||
| 			// list of series, the pie plugin uses a hack where the first call | ||||
| 			// to processDatapoints results in a call to setData with the new | ||||
| 			// list of series, then subsequent processDatapoints do nothing. | ||||
|  | ||||
| 			// The plugin-global 'processed' flag is used to control this hack; | ||||
| 			// it starts out false, and is set to true after the first call to | ||||
| 			// processDatapoints. | ||||
|  | ||||
| 			// Unfortunately this turns future setData calls into no-ops; they | ||||
| 			// call processDatapoints, the flag is true, and nothing happens. | ||||
|  | ||||
| 			// To fix this we'll set the flag back to false here in draw, when | ||||
| 			// all series have been processed, so the next sequence of calls to | ||||
| 			// processDatapoints once again starts out with a slice-combine. | ||||
| 			// This is really a hack; in 0.9 we need to give plugins a proper | ||||
| 			// way to modify series before any processing begins. | ||||
|  | ||||
| 			processed = false; | ||||
|  | ||||
| 			// calculate maximum radius and center point | ||||
|  | ||||
| 			maxRadius =  Math.min(canvasWidth, canvasHeight / options.series.pie.tilt) / 2; | ||||
| 			centerTop = canvasHeight / 2 + options.series.pie.offset.top; | ||||
| 			centerLeft = canvasWidth / 2; | ||||
|  | ||||
| 			if (options.series.pie.offset.left == "auto") { | ||||
| 				if (options.legend.position.match("w")) { | ||||
| 					centerLeft += legendWidth / 2; | ||||
| 				} else { | ||||
| 					centerLeft -= legendWidth / 2; | ||||
| 				} | ||||
| 				if (centerLeft < maxRadius) { | ||||
| 					centerLeft = maxRadius; | ||||
| 				} else if (centerLeft > canvasWidth - maxRadius) { | ||||
| 					centerLeft = canvasWidth - maxRadius; | ||||
| 				} | ||||
| 			} else { | ||||
| 				centerLeft += options.series.pie.offset.left; | ||||
| 			} | ||||
|  | ||||
| 			var slices = plot.getData(), | ||||
| 				attempts = 0; | ||||
|  | ||||
| 			// Keep shrinking the pie's radius until drawPie returns true, | ||||
| 			// indicating that all the labels fit, or we try too many times. | ||||
|  | ||||
| 			do { | ||||
| 				if (attempts > 0) { | ||||
| 					maxRadius *= REDRAW_SHRINK; | ||||
| 				} | ||||
| 				attempts += 1; | ||||
| 				clear(); | ||||
| 				if (options.series.pie.tilt <= 0.8) { | ||||
| 					drawShadow(); | ||||
| 				} | ||||
| 			} while (!drawPie() && attempts < REDRAW_ATTEMPTS) | ||||
|  | ||||
| 			if (attempts >= REDRAW_ATTEMPTS) { | ||||
| 				clear(); | ||||
| 				target.prepend("<div class='error'>Could not draw pie with labels contained inside canvas</div>"); | ||||
| 			} | ||||
|  | ||||
| 			if (plot.setSeries && plot.insertLegend) { | ||||
| 				plot.setSeries(slices); | ||||
| 				plot.insertLegend(); | ||||
| 			} | ||||
|  | ||||
| 			// we're actually done at this point, just defining internal functions at this point | ||||
|  | ||||
| 			function clear() { | ||||
| 				ctx.clearRect(0, 0, canvasWidth, canvasHeight); | ||||
| 				target.children().filter(".pieLabel, .pieLabelBackground").remove(); | ||||
| 			} | ||||
|  | ||||
| 			function drawShadow() { | ||||
|  | ||||
| 				var shadowLeft = options.series.pie.shadow.left; | ||||
| 				var shadowTop = options.series.pie.shadow.top; | ||||
| 				var edge = 10; | ||||
| 				var alpha = options.series.pie.shadow.alpha; | ||||
| 				var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius; | ||||
|  | ||||
| 				if (radius >= canvasWidth / 2 - shadowLeft || radius * options.series.pie.tilt >= canvasHeight / 2 - shadowTop || radius <= edge) { | ||||
| 					return;	// shadow would be outside canvas, so don't draw it | ||||
| 				} | ||||
|  | ||||
| 				ctx.save(); | ||||
| 				ctx.translate(shadowLeft,shadowTop); | ||||
| 				ctx.globalAlpha = alpha; | ||||
| 				ctx.fillStyle = "#000"; | ||||
|  | ||||
| 				// center and rotate to starting position | ||||
|  | ||||
| 				ctx.translate(centerLeft,centerTop); | ||||
| 				ctx.scale(1, options.series.pie.tilt); | ||||
|  | ||||
| 				//radius -= edge; | ||||
|  | ||||
| 				for (var i = 1; i <= edge; i++) { | ||||
| 					ctx.beginPath(); | ||||
| 					ctx.arc(0, 0, radius, 0, Math.PI * 2, false); | ||||
| 					ctx.fill(); | ||||
| 					radius -= i; | ||||
| 				} | ||||
|  | ||||
| 				ctx.restore(); | ||||
| 			} | ||||
|  | ||||
| 			function drawPie() { | ||||
|  | ||||
| 				var startAngle = Math.PI * options.series.pie.startAngle; | ||||
| 				var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius; | ||||
|  | ||||
| 				// center and rotate to starting position | ||||
|  | ||||
| 				ctx.save(); | ||||
| 				ctx.translate(centerLeft,centerTop); | ||||
| 				ctx.scale(1, options.series.pie.tilt); | ||||
| 				//ctx.rotate(startAngle); // start at top; -- This doesn't work properly in Opera | ||||
|  | ||||
| 				// draw slices | ||||
|  | ||||
| 				ctx.save(); | ||||
| 				var currentAngle = startAngle; | ||||
| 				for (var i = 0; i < slices.length; ++i) { | ||||
| 					slices[i].startAngle = currentAngle; | ||||
| 					drawSlice(slices[i].angle, slices[i].color, true); | ||||
| 				} | ||||
| 				ctx.restore(); | ||||
|  | ||||
| 				// draw slice outlines | ||||
|  | ||||
| 				if (options.series.pie.stroke.width > 0) { | ||||
| 					ctx.save(); | ||||
| 					ctx.lineWidth = options.series.pie.stroke.width; | ||||
| 					currentAngle = startAngle; | ||||
| 					for (var i = 0; i < slices.length; ++i) { | ||||
| 						drawSlice(slices[i].angle, options.series.pie.stroke.color, false); | ||||
| 					} | ||||
| 					ctx.restore(); | ||||
| 				} | ||||
|  | ||||
| 				// draw donut hole | ||||
|  | ||||
| 				drawDonutHole(ctx); | ||||
|  | ||||
| 				ctx.restore(); | ||||
|  | ||||
| 				// Draw the labels, returning true if they fit within the plot | ||||
|  | ||||
| 				if (options.series.pie.label.show) { | ||||
| 					return drawLabels(); | ||||
| 				} else return true; | ||||
|  | ||||
| 				function drawSlice(angle, color, fill) { | ||||
|  | ||||
| 					if (angle <= 0 || isNaN(angle)) { | ||||
| 						return; | ||||
| 					} | ||||
|  | ||||
| 					if (fill) { | ||||
| 						ctx.fillStyle = color; | ||||
| 					} else { | ||||
| 						ctx.strokeStyle = color; | ||||
| 						ctx.lineJoin = "round"; | ||||
| 					} | ||||
|  | ||||
| 					ctx.beginPath(); | ||||
| 					if (Math.abs(angle - Math.PI * 2) > 0.000000001) { | ||||
| 						ctx.moveTo(0, 0); // Center of the pie | ||||
| 					} | ||||
|  | ||||
| 					//ctx.arc(0, 0, radius, 0, angle, false); // This doesn't work properly in Opera | ||||
| 					ctx.arc(0, 0, radius,currentAngle, currentAngle + angle / 2, false); | ||||
| 					ctx.arc(0, 0, radius,currentAngle + angle / 2, currentAngle + angle, false); | ||||
| 					ctx.closePath(); | ||||
| 					//ctx.rotate(angle); // This doesn't work properly in Opera | ||||
| 					currentAngle += angle; | ||||
|  | ||||
| 					if (fill) { | ||||
| 						ctx.fill(); | ||||
| 					} else { | ||||
| 						ctx.stroke(); | ||||
| 					} | ||||
| 				} | ||||
|  | ||||
| 				function drawLabels() { | ||||
|  | ||||
| 					var currentAngle = startAngle; | ||||
| 					var radius = options.series.pie.label.radius > 1 ? options.series.pie.label.radius : maxRadius * options.series.pie.label.radius; | ||||
|  | ||||
| 					for (var i = 0; i < slices.length; ++i) { | ||||
| 						if (slices[i].percent >= options.series.pie.label.threshold * 100) { | ||||
| 							if (!drawLabel(slices[i], currentAngle, i)) { | ||||
| 								return false; | ||||
| 							} | ||||
| 						} | ||||
| 						currentAngle += slices[i].angle; | ||||
| 					} | ||||
|  | ||||
| 					return true; | ||||
|  | ||||
| 					function drawLabel(slice, startAngle, index) { | ||||
|  | ||||
| 						if (slice.data[0][1] == 0) { | ||||
| 							return true; | ||||
| 						} | ||||
|  | ||||
| 						// format label text | ||||
|  | ||||
| 						var lf = options.legend.labelFormatter, text, plf = options.series.pie.label.formatter; | ||||
|  | ||||
| 						if (lf) { | ||||
| 							text = lf(slice.label, slice); | ||||
| 						} else { | ||||
| 							text = slice.label; | ||||
| 						} | ||||
|  | ||||
| 						if (plf) { | ||||
| 							text = plf(text, slice); | ||||
| 						} | ||||
|  | ||||
| 						var halfAngle = ((startAngle + slice.angle) + startAngle) / 2; | ||||
| 						var x = centerLeft + Math.round(Math.cos(halfAngle) * radius); | ||||
| 						var y = centerTop + Math.round(Math.sin(halfAngle) * radius) * options.series.pie.tilt; | ||||
|  | ||||
| 						var html = "<span class='pieLabel' id='pieLabel" + index + "' style='position:absolute;top:" + y + "px;left:" + x + "px;'>" + text + "</span>"; | ||||
| 						target.append(html); | ||||
|  | ||||
| 						var label = target.children("#pieLabel" + index); | ||||
| 						var labelTop = (y - label.height() / 2); | ||||
| 						var labelLeft = (x - label.width() / 2); | ||||
|  | ||||
| 						label.css("top", labelTop); | ||||
| 						label.css("left", labelLeft); | ||||
|  | ||||
| 						// check to make sure that the label is not outside the canvas | ||||
|  | ||||
| 						if (0 - labelTop > 0 || 0 - labelLeft > 0 || canvasHeight - (labelTop + label.height()) < 0 || canvasWidth - (labelLeft + label.width()) < 0) { | ||||
| 							return false; | ||||
| 						} | ||||
|  | ||||
| 						if (options.series.pie.label.background.opacity != 0) { | ||||
|  | ||||
| 							// put in the transparent background separately to avoid blended labels and label boxes | ||||
|  | ||||
| 							var c = options.series.pie.label.background.color; | ||||
|  | ||||
| 							if (c == null) { | ||||
| 								c = slice.color; | ||||
| 							} | ||||
|  | ||||
| 							var pos = "top:" + labelTop + "px;left:" + labelLeft + "px;"; | ||||
| 							$("<div class='pieLabelBackground' style='position:absolute;width:" + label.width() + "px;height:" + label.height() + "px;" + pos + "background-color:" + c + ";'></div>") | ||||
| 								.css("opacity", options.series.pie.label.background.opacity) | ||||
| 								.insertBefore(label); | ||||
| 						} | ||||
|  | ||||
| 						return true; | ||||
| 					} // end individual label function | ||||
| 				} // end drawLabels function | ||||
| 			} // end drawPie function | ||||
| 		} // end draw function | ||||
|  | ||||
| 		// Placed here because it needs to be accessed from multiple locations | ||||
|  | ||||
| 		function drawDonutHole(layer) { | ||||
| 			if (options.series.pie.innerRadius > 0) { | ||||
|  | ||||
| 				// subtract the center | ||||
|  | ||||
| 				layer.save(); | ||||
| 				var innerRadius = options.series.pie.innerRadius > 1 ? options.series.pie.innerRadius : maxRadius * options.series.pie.innerRadius; | ||||
| 				layer.globalCompositeOperation = "destination-out"; // this does not work with excanvas, but it will fall back to using the stroke color | ||||
| 				layer.beginPath(); | ||||
| 				layer.fillStyle = options.series.pie.stroke.color; | ||||
| 				layer.arc(0, 0, innerRadius, 0, Math.PI * 2, false); | ||||
| 				layer.fill(); | ||||
| 				layer.closePath(); | ||||
| 				layer.restore(); | ||||
|  | ||||
| 				// add inner stroke | ||||
|  | ||||
| 				layer.save(); | ||||
| 				layer.beginPath(); | ||||
| 				layer.strokeStyle = options.series.pie.stroke.color; | ||||
| 				layer.arc(0, 0, innerRadius, 0, Math.PI * 2, false); | ||||
| 				layer.stroke(); | ||||
| 				layer.closePath(); | ||||
| 				layer.restore(); | ||||
|  | ||||
| 				// TODO: add extra shadow inside hole (with a mask) if the pie is tilted. | ||||
| 			} | ||||
| 		} | ||||
|  | ||||
| 		//-- Additional Interactive related functions -- | ||||
|  | ||||
| 		function isPointInPoly(poly, pt) { | ||||
| 			for(var c = false, i = -1, l = poly.length, j = l - 1; ++i < l; j = i) | ||||
| 				((poly[i][1] <= pt[1] && pt[1] < poly[j][1]) || (poly[j][1] <= pt[1] && pt[1]< poly[i][1])) | ||||
| 				&& (pt[0] < (poly[j][0] - poly[i][0]) * (pt[1] - poly[i][1]) / (poly[j][1] - poly[i][1]) + poly[i][0]) | ||||
| 				&& (c = !c); | ||||
| 			return c; | ||||
| 		} | ||||
|  | ||||
| 		function findNearbySlice(mouseX, mouseY) { | ||||
|  | ||||
| 			var slices = plot.getData(), | ||||
| 				options = plot.getOptions(), | ||||
| 				radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius, | ||||
| 				x, y; | ||||
|  | ||||
| 			for (var i = 0; i < slices.length; ++i) { | ||||
|  | ||||
| 				var s = slices[i]; | ||||
|  | ||||
| 				if (s.pie.show) { | ||||
|  | ||||
| 					ctx.save(); | ||||
| 					ctx.beginPath(); | ||||
| 					ctx.moveTo(0, 0); // Center of the pie | ||||
| 					//ctx.scale(1, options.series.pie.tilt);	// this actually seems to break everything when here. | ||||
| 					ctx.arc(0, 0, radius, s.startAngle, s.startAngle + s.angle / 2, false); | ||||
| 					ctx.arc(0, 0, radius, s.startAngle + s.angle / 2, s.startAngle + s.angle, false); | ||||
| 					ctx.closePath(); | ||||
| 					x = mouseX - centerLeft; | ||||
| 					y = mouseY - centerTop; | ||||
|  | ||||
| 					if (ctx.isPointInPath) { | ||||
| 						if (ctx.isPointInPath(mouseX - centerLeft, mouseY - centerTop)) { | ||||
| 							ctx.restore(); | ||||
| 							return { | ||||
| 								datapoint: [s.percent, s.data], | ||||
| 								dataIndex: 0, | ||||
| 								series: s, | ||||
| 								seriesIndex: i | ||||
| 							}; | ||||
| 						} | ||||
| 					} else { | ||||
|  | ||||
| 						// excanvas for IE doesn;t support isPointInPath, this is a workaround. | ||||
|  | ||||
| 						var p1X = radius * Math.cos(s.startAngle), | ||||
| 							p1Y = radius * Math.sin(s.startAngle), | ||||
| 							p2X = radius * Math.cos(s.startAngle + s.angle / 4), | ||||
| 							p2Y = radius * Math.sin(s.startAngle + s.angle / 4), | ||||
| 							p3X = radius * Math.cos(s.startAngle + s.angle / 2), | ||||
| 							p3Y = radius * Math.sin(s.startAngle + s.angle / 2), | ||||
| 							p4X = radius * Math.cos(s.startAngle + s.angle / 1.5), | ||||
| 							p4Y = radius * Math.sin(s.startAngle + s.angle / 1.5), | ||||
| 							p5X = radius * Math.cos(s.startAngle + s.angle), | ||||
| 							p5Y = radius * Math.sin(s.startAngle + s.angle), | ||||
| 							arrPoly = [[0, 0], [p1X, p1Y], [p2X, p2Y], [p3X, p3Y], [p4X, p4Y], [p5X, p5Y]], | ||||
| 							arrPoint = [x, y]; | ||||
|  | ||||
| 						// TODO: perhaps do some mathmatical trickery here with the Y-coordinate to compensate for pie tilt? | ||||
|  | ||||
| 						if (isPointInPoly(arrPoly, arrPoint)) { | ||||
| 							ctx.restore(); | ||||
| 							return { | ||||
| 								datapoint: [s.percent, s.data], | ||||
| 								dataIndex: 0, | ||||
| 								series: s, | ||||
| 								seriesIndex: i | ||||
| 							}; | ||||
| 						} | ||||
| 					} | ||||
|  | ||||
| 					ctx.restore(); | ||||
| 				} | ||||
| 			} | ||||
|  | ||||
| 			return null; | ||||
| 		} | ||||
|  | ||||
| 		function onMouseMove(e) { | ||||
| 			triggerClickHoverEvent("plothover", e); | ||||
| 		} | ||||
|  | ||||
| 		function onClick(e) { | ||||
| 			triggerClickHoverEvent("plotclick", e); | ||||
| 		} | ||||
|  | ||||
| 		// trigger click or hover event (they send the same parameters so we share their code) | ||||
|  | ||||
| 		function triggerClickHoverEvent(eventname, e) { | ||||
|  | ||||
| 			var offset = plot.offset(); | ||||
| 			var canvasX = parseInt(e.pageX - offset.left); | ||||
| 			var canvasY =  parseInt(e.pageY - offset.top); | ||||
| 			var item = findNearbySlice(canvasX, canvasY); | ||||
|  | ||||
| 			if (options.grid.autoHighlight) { | ||||
|  | ||||
| 				// clear auto-highlights | ||||
|  | ||||
| 				for (var i = 0; i < highlights.length; ++i) { | ||||
| 					var h = highlights[i]; | ||||
| 					if (h.auto == eventname && !(item && h.series == item.series)) { | ||||
| 						unhighlight(h.series); | ||||
| 					} | ||||
| 				} | ||||
| 			} | ||||
|  | ||||
| 			// highlight the slice | ||||
|  | ||||
| 			if (item) { | ||||
| 				highlight(item.series, eventname); | ||||
| 			} | ||||
|  | ||||
| 			// trigger any hover bind events | ||||
|  | ||||
| 			var pos = { pageX: e.pageX, pageY: e.pageY }; | ||||
| 			target.trigger(eventname, [pos, item]); | ||||
| 		} | ||||
|  | ||||
| 		function highlight(s, auto) { | ||||
| 			//if (typeof s == "number") { | ||||
| 			//	s = series[s]; | ||||
| 			//} | ||||
|  | ||||
| 			var i = indexOfHighlight(s); | ||||
|  | ||||
| 			if (i == -1) { | ||||
| 				highlights.push({ series: s, auto: auto }); | ||||
| 				plot.triggerRedrawOverlay(); | ||||
| 			} else if (!auto) { | ||||
| 				highlights[i].auto = false; | ||||
| 			} | ||||
| 		} | ||||
|  | ||||
| 		function unhighlight(s) { | ||||
| 			if (s == null) { | ||||
| 				highlights = []; | ||||
| 				plot.triggerRedrawOverlay(); | ||||
| 			} | ||||
|  | ||||
| 			//if (typeof s == "number") { | ||||
| 			//	s = series[s]; | ||||
| 			//} | ||||
|  | ||||
| 			var i = indexOfHighlight(s); | ||||
|  | ||||
| 			if (i != -1) { | ||||
| 				highlights.splice(i, 1); | ||||
| 				plot.triggerRedrawOverlay(); | ||||
| 			} | ||||
| 		} | ||||
|  | ||||
| 		function indexOfHighlight(s) { | ||||
| 			for (var i = 0; i < highlights.length; ++i) { | ||||
| 				var h = highlights[i]; | ||||
| 				if (h.series == s) | ||||
| 					return i; | ||||
| 			} | ||||
| 			return -1; | ||||
| 		} | ||||
|  | ||||
| 		function drawOverlay(plot, octx) { | ||||
|  | ||||
| 			var options = plot.getOptions(); | ||||
|  | ||||
| 			var radius = options.series.pie.radius > 1 ? options.series.pie.radius : maxRadius * options.series.pie.radius; | ||||
|  | ||||
| 			octx.save(); | ||||
| 			octx.translate(centerLeft, centerTop); | ||||
| 			octx.scale(1, options.series.pie.tilt); | ||||
|  | ||||
| 			for (var i = 0; i < highlights.length; ++i) { | ||||
| 				drawHighlight(highlights[i].series); | ||||
| 			} | ||||
|  | ||||
| 			drawDonutHole(octx); | ||||
|  | ||||
| 			octx.restore(); | ||||
|  | ||||
| 			function drawHighlight(series) { | ||||
|  | ||||
| 				if (series.angle <= 0 || isNaN(series.angle)) { | ||||
| 					return; | ||||
| 				} | ||||
|  | ||||
| 				//octx.fillStyle = parseColor(options.series.pie.highlight.color).scale(null, null, null, options.series.pie.highlight.opacity).toString(); | ||||
| 				octx.fillStyle = "rgba(255, 255, 255, " + options.series.pie.highlight.opacity + ")"; // this is temporary until we have access to parseColor | ||||
| 				octx.beginPath(); | ||||
| 				if (Math.abs(series.angle - Math.PI * 2) > 0.000000001) { | ||||
| 					octx.moveTo(0, 0); // Center of the pie | ||||
| 				} | ||||
| 				octx.arc(0, 0, radius, series.startAngle, series.startAngle + series.angle / 2, false); | ||||
| 				octx.arc(0, 0, radius, series.startAngle + series.angle / 2, series.startAngle + series.angle, false); | ||||
| 				octx.closePath(); | ||||
| 				octx.fill(); | ||||
| 			} | ||||
| 		} | ||||
| 	} // end init (plugin body) | ||||
|  | ||||
| 	// define pie specific options and their default values | ||||
|  | ||||
| 	var options = { | ||||
| 		series: { | ||||
| 			pie: { | ||||
| 				show: false, | ||||
| 				radius: "auto",	// actual radius of the visible pie (based on full calculated radius if <=1, or hard pixel value) | ||||
| 				innerRadius: 0, /* for donut */ | ||||
| 				startAngle: 3/2, | ||||
| 				tilt: 1, | ||||
| 				shadow: { | ||||
| 					left: 5,	// shadow left offset | ||||
| 					top: 15,	// shadow top offset | ||||
| 					alpha: 0.02	// shadow alpha | ||||
| 				}, | ||||
| 				offset: { | ||||
| 					top: 0, | ||||
| 					left: "auto" | ||||
| 				}, | ||||
| 				stroke: { | ||||
| 					color: "#fff", | ||||
| 					width: 1 | ||||
| 				}, | ||||
| 				label: { | ||||
| 					show: "auto", | ||||
| 					formatter: function(label, slice) { | ||||
| 						return "<div style='font-size:x-small;text-align:center;padding:2px;color:" + slice.color + ";'>" + label + "<br/>" + Math.round(slice.percent) + "%</div>"; | ||||
| 					},	// formatter function | ||||
| 					radius: 1,	// radius at which to place the labels (based on full calculated radius if <=1, or hard pixel value) | ||||
| 					background: { | ||||
| 						color: null, | ||||
| 						opacity: 0 | ||||
| 					}, | ||||
| 					threshold: 0	// percentage at which to hide the label (i.e. the slice is too narrow) | ||||
| 				}, | ||||
| 				combine: { | ||||
| 					threshold: -1,	// percentage at which to combine little slices into one larger slice | ||||
| 					color: null,	// color to give the new slice (auto-generated if null) | ||||
| 					label: "Other"	// label to give the new slice | ||||
| 				}, | ||||
| 				highlight: { | ||||
| 					//color: "#fff",		// will add this functionality once parseColor is available | ||||
| 					opacity: 0.5 | ||||
| 				} | ||||
| 			} | ||||
| 		} | ||||
| 	}; | ||||
|  | ||||
| 	$.plot.plugins.push({ | ||||
| 		init: init, | ||||
| 		options: options, | ||||
| 		name: "pie", | ||||
| 		version: "1.1" | ||||
| 	}); | ||||
|  | ||||
| })(jQuery); | ||||
		Reference in New Issue
	
	Block a user