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source: trunk/sources/HeuristicLab.Analysis.Views/3.3/DataTableControl.cs @ 14728

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Last change on this file since 14728 was 14582, checked in by pfleck, 8 years ago

Added 3 types of histogram aggregation: Overlapping (transparent), SideBySide and Stacked
Added a "clear color"-button in the DataRowVisualPropertiesControl to set the color back to the default color palette color.
Set the legend ordering to "reversed". Otherwise legend entries of multiple histograms are not ordered according tho the DataRow ordering.

File size: 32.6 KB

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1	#region License Information
2	/* HeuristicLab
3	* Copyright (C) 2002-2016 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4	*
5	* This file is part of HeuristicLab.
6	*
7	* HeuristicLab is free software: you can redistribute it and/or modify
8	* it under the terms of the GNU General Public License as published by
9	* the Free Software Foundation, either version 3 of the License, or
10	* (at your option) any later version.
11	*
12	* HeuristicLab is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	* GNU General Public License for more details.
16	*
17	* You should have received a copy of the GNU General Public License
18	* along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19	*/
20	#endregion
21
22	using System;
23	using System.Collections.Generic;
24	using System.Drawing;
25	using System.Linq;
26	using System.Windows.Forms;
27	using System.Windows.Forms.DataVisualization.Charting;
28	using HeuristicLab.Collections;
29	using HeuristicLab.MainForm.WindowsForms;
30
31	namespace HeuristicLab.Analysis.Views {
32	public partial class DataTableControl : AsynchronousContentView {
33	protected List<Series> invisibleSeries;
34	protected Dictionary<IObservableList<double>, DataRow> valuesRowsTable;
35
36	public new DataTable Content {
37	get { return (DataTable)base.Content; }
38	set { base.Content = value; }
39	}
40
41	public DataTableControl() {
42	InitializeComponent();
43	valuesRowsTable = new Dictionary<IObservableList<double>, DataRow>();
44	invisibleSeries = new List<Series>();
45	chart.CustomizeAllChartAreas();
46	chart.ChartAreas[0].CursorX.Interval = 1;
47	chart.ContextMenuStrip.Items.Add(configureToolStripMenuItem);
48	}
49
50	#region Event Handler Registration
51	protected override void DeregisterContentEvents() {
52	foreach (DataRow row in Content.Rows)
53	DeregisterDataRowEvents(row);
54	Content.VisualPropertiesChanged -= new EventHandler(Content_VisualPropertiesChanged);
55	Content.Rows.ItemsAdded -= new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsAdded);
56	Content.Rows.ItemsRemoved -= new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsRemoved);
57	Content.Rows.ItemsReplaced -= new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsReplaced);
58	Content.Rows.CollectionReset -= new CollectionItemsChangedEventHandler<DataRow>(Rows_CollectionReset);
59	}
60	protected override void RegisterContentEvents() {
61	Content.VisualPropertiesChanged += new EventHandler(Content_VisualPropertiesChanged);
62	Content.Rows.ItemsAdded += new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsAdded);
63	Content.Rows.ItemsRemoved += new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsRemoved);
64	Content.Rows.ItemsReplaced += new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsReplaced);
65	Content.Rows.CollectionReset += new CollectionItemsChangedEventHandler<DataRow>(Rows_CollectionReset);
66	}
67
68	protected virtual void RegisterDataRowEvents(DataRow row) {
69	row.NameChanged += new EventHandler(Row_NameChanged);
70	row.VisualPropertiesChanged += new EventHandler(Row_VisualPropertiesChanged);
71	valuesRowsTable.Add(row.Values, row);
72	row.Values.ItemsAdded += new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsAdded);
73	row.Values.ItemsRemoved += new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsRemoved);
74	row.Values.ItemsReplaced += new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsReplaced);
75	row.Values.ItemsMoved += new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsMoved);
76	row.Values.CollectionReset += new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_CollectionReset);
77	}
78	protected virtual void DeregisterDataRowEvents(DataRow row) {
79	row.Values.ItemsAdded -= new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsAdded);
80	row.Values.ItemsRemoved -= new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsRemoved);
81	row.Values.ItemsReplaced -= new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsReplaced);
82	row.Values.ItemsMoved -= new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsMoved);
83	row.Values.CollectionReset -= new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_CollectionReset);
84	valuesRowsTable.Remove(row.Values);
85	row.VisualPropertiesChanged -= new EventHandler(Row_VisualPropertiesChanged);
86	row.NameChanged -= new EventHandler(Row_NameChanged);
87	}
88	#endregion
89
90	protected override void OnContentChanged() {
91	invisibleSeries.Clear();
92	chart.Titles[0].Text = string.Empty;
93	chart.ChartAreas[0].AxisX.Title = string.Empty;
94	chart.ChartAreas[0].AxisY.Title = string.Empty;
95	chart.ChartAreas[0].AxisY2.Title = string.Empty;
96	chart.Series.Clear();
97	if (Content != null) {
98	chart.Titles[0].Text = Content.Name;
99	chart.Titles[0].Visible = !string.IsNullOrEmpty(Content.Name);
100	AddDataRows(Content.Rows);
101	ConfigureChartArea(chart.ChartAreas[0]);
102	RecalculateAxesScale(chart.ChartAreas[0]);
103	}
104	}
105
106	protected override void SetEnabledStateOfControls() {
107	chart.Enabled = Content != null;
108	}
109
110	public void ShowConfiguration() {
111	if (Content != null) {
112	using (var dialog = new DataTableVisualPropertiesDialog(Content)) {
113	dialog.ShowDialog(this);
114	}
115	} else MessageBox.Show("Nothing to configure.");
116	}
117	protected virtual void AddDataRows(IEnumerable<DataRow> rows) {
118	foreach (var row in rows) {
119	RegisterDataRowEvents(row);
120	var series = new Series(row.Name) {
121	Tag = row
122	};
123	if (row.VisualProperties.DisplayName.Trim() != String.Empty) series.LegendText = row.VisualProperties.DisplayName;
124	else series.LegendText = row.Name;
125	ConfigureSeries(series, row);
126	FillSeriesWithRowValues(series, row);
127	chart.Series.Add(series);
128	}
129	ConfigureChartArea(chart.ChartAreas[0]);
130	RecalculateAxesScale(chart.ChartAreas[0]);
131	UpdateYCursorInterval();
132	UpdateHistogramTransparency();
133	}
134
135	protected virtual void RemoveDataRows(IEnumerable<DataRow> rows) {
136	foreach (var row in rows) {
137	DeregisterDataRowEvents(row);
138	Series series = chart.Series[row.Name];
139	chart.Series.Remove(series);
140	if (invisibleSeries.Contains(series))
141	invisibleSeries.Remove(series);
142	}
143	RecalculateAxesScale(chart.ChartAreas[0]);
144	}
145
146	private void ConfigureSeries(Series series, DataRow row) {
147	RemoveCustomPropertyIfExists(series, "PointWidth");
148	series.BorderWidth = 1;
149	series.BorderDashStyle = ChartDashStyle.Solid;
150	series.BorderColor = Color.Empty;
151
152	if (row.VisualProperties.Color != Color.Empty)
153	series.Color = row.VisualProperties.Color;
154	else series.Color = Color.Empty;
155	series.IsVisibleInLegend = row.VisualProperties.IsVisibleInLegend;
156
157	switch (row.VisualProperties.ChartType) {
158	case DataRowVisualProperties.DataRowChartType.Line:
159	series.ChartType = SeriesChartType.FastLine;
160	series.BorderWidth = row.VisualProperties.LineWidth;
161	series.BorderDashStyle = ConvertLineStyle(row.VisualProperties.LineStyle);
162	break;
163	case DataRowVisualProperties.DataRowChartType.Bars:
164	// Bar is incompatible with anything but Bar and StackedBar*
165	if (!chart.Series.Any(x => x.ChartType != SeriesChartType.Bar && x.ChartType != SeriesChartType.StackedBar && x.ChartType != SeriesChartType.StackedBar100))
166	series.ChartType = SeriesChartType.Bar;
167	else {
168	series.ChartType = SeriesChartType.FastPoint; //default
169	row.VisualProperties.ChartType = DataRowVisualProperties.DataRowChartType.Points;
170	}
171	break;
172	case DataRowVisualProperties.DataRowChartType.Columns:
173	series.ChartType = SeriesChartType.Column;
174	break;
175	case DataRowVisualProperties.DataRowChartType.Points:
176	series.ChartType = SeriesChartType.FastPoint;
177	break;
178	case DataRowVisualProperties.DataRowChartType.Histogram:
179	bool stacked = row.VisualProperties.Aggregation == DataRowVisualProperties.DataRowHistogramAggregation.Stacked;
180	series.ChartType = stacked ? SeriesChartType.StackedColumn : SeriesChartType.Column;
181	bool sideBySide = row.VisualProperties.Aggregation == DataRowVisualProperties.DataRowHistogramAggregation.SideBySide;
182	series.SetCustomProperty("DrawSideBySide", sideBySide ? "True" : "False");
183	series.SetCustomProperty("PointWidth", "1");
184	if (!series.Color.IsEmpty && series.Color.GetBrightness() < 0.25)
185	series.BorderColor = Color.White;
186	else series.BorderColor = Color.Black;
187	break;
188	case DataRowVisualProperties.DataRowChartType.StepLine:
189	series.ChartType = SeriesChartType.StepLine;
190	series.BorderWidth = row.VisualProperties.LineWidth;
191	series.BorderDashStyle = ConvertLineStyle(row.VisualProperties.LineStyle);
192	break;
193	default:
194	series.ChartType = SeriesChartType.FastPoint;
195	break;
196	}
197	series.YAxisType = row.VisualProperties.SecondYAxis ? AxisType.Secondary : AxisType.Primary;
198	series.XAxisType = row.VisualProperties.SecondXAxis ? AxisType.Secondary : AxisType.Primary;
199	if (row.VisualProperties.DisplayName.Trim() != String.Empty) series.LegendText = row.VisualProperties.DisplayName;
200	else series.LegendText = row.Name;
201
202	string xAxisTitle = string.IsNullOrEmpty(Content.VisualProperties.XAxisTitle)
203	? "X"
204	: Content.VisualProperties.XAxisTitle;
205	string yAxisTitle = string.IsNullOrEmpty(Content.VisualProperties.YAxisTitle)
206	? "Y"
207	: Content.VisualProperties.YAxisTitle;
208	series.ToolTip =
209	series.LegendText + Environment.NewLine +
210	xAxisTitle + " = " + "#INDEX," + Environment.NewLine +
211	yAxisTitle + " = " + "#VAL";
212	}
213
214	private void ConfigureChartArea(ChartArea area) {
215	if (Content.VisualProperties.TitleFont != null) chart.Titles[0].Font = Content.VisualProperties.TitleFont;
216	if (!Content.VisualProperties.TitleColor.IsEmpty) chart.Titles[0].ForeColor = Content.VisualProperties.TitleColor;
217	chart.Titles[0].Text = Content.VisualProperties.Title;
218	chart.Titles[0].Visible = !string.IsNullOrEmpty(Content.VisualProperties.Title);
219
220	if (Content.VisualProperties.AxisTitleFont != null) area.AxisX.TitleFont = Content.VisualProperties.AxisTitleFont;
221	if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisX.TitleForeColor = Content.VisualProperties.AxisTitleColor;
222	area.AxisX.Title = Content.VisualProperties.XAxisTitle;
223
224	if (Content.VisualProperties.AxisTitleFont != null) area.AxisX2.TitleFont = Content.VisualProperties.AxisTitleFont;
225	if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisX2.TitleForeColor = Content.VisualProperties.AxisTitleColor;
226	area.AxisX2.Title = Content.VisualProperties.SecondXAxisTitle;
227
228	if (Content.VisualProperties.AxisTitleFont != null) area.AxisY.TitleFont = Content.VisualProperties.AxisTitleFont;
229	if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisY.TitleForeColor = Content.VisualProperties.AxisTitleColor;
230	area.AxisY.Title = Content.VisualProperties.YAxisTitle;
231
232	if (Content.VisualProperties.AxisTitleFont != null) area.AxisY2.TitleFont = Content.VisualProperties.AxisTitleFont;
233	if (!Content.VisualProperties.AxisTitleColor.IsEmpty) area.AxisY2.TitleForeColor = Content.VisualProperties.AxisTitleColor;
234	area.AxisY2.Title = Content.VisualProperties.SecondYAxisTitle;
235
236	area.AxisX.IsLogarithmic = Content.VisualProperties.XAxisLogScale;
237	area.AxisX2.IsLogarithmic = Content.VisualProperties.SecondXAxisLogScale;
238	area.AxisY.IsLogarithmic = Content.VisualProperties.YAxisLogScale;
239	area.AxisY2.IsLogarithmic = Content.VisualProperties.SecondYAxisLogScale;
240	}
241
242	private void RecalculateAxesScale(ChartArea area) {
243	// Reset the axes bounds so that RecalculateAxesScale() will assign new bounds
244	foreach (Axis a in area.Axes) {
245	a.Minimum = double.NaN;
246	a.Maximum = double.NaN;
247	}
248	area.RecalculateAxesScale();
249	area.AxisX.IsMarginVisible = false;
250	area.AxisX2.IsMarginVisible = false;
251
252	if (!Content.VisualProperties.XAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.XAxisMinimumFixedValue)) area.AxisX.Minimum = Content.VisualProperties.XAxisMinimumFixedValue;
253	if (!Content.VisualProperties.XAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.XAxisMaximumFixedValue)) area.AxisX.Maximum = Content.VisualProperties.XAxisMaximumFixedValue;
254	if (!Content.VisualProperties.SecondXAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.SecondXAxisMinimumFixedValue)) area.AxisX2.Minimum = Content.VisualProperties.SecondXAxisMinimumFixedValue;
255	if (!Content.VisualProperties.SecondXAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.SecondXAxisMaximumFixedValue)) area.AxisX2.Maximum = Content.VisualProperties.SecondXAxisMaximumFixedValue;
256	if (!Content.VisualProperties.YAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.YAxisMinimumFixedValue)) area.AxisY.Minimum = Content.VisualProperties.YAxisMinimumFixedValue;
257	if (!Content.VisualProperties.YAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.YAxisMaximumFixedValue)) area.AxisY.Maximum = Content.VisualProperties.YAxisMaximumFixedValue;
258	if (!Content.VisualProperties.SecondYAxisMinimumAuto && !double.IsNaN(Content.VisualProperties.SecondYAxisMinimumFixedValue)) area.AxisY2.Minimum = Content.VisualProperties.SecondYAxisMinimumFixedValue;
259	if (!Content.VisualProperties.SecondYAxisMaximumAuto && !double.IsNaN(Content.VisualProperties.SecondYAxisMaximumFixedValue)) area.AxisY2.Maximum = Content.VisualProperties.SecondYAxisMaximumFixedValue;
260	if (area.AxisX.Minimum >= area.AxisX.Maximum) area.AxisX.Maximum = area.AxisX.Minimum + 1;
261	if (area.AxisX2.Minimum >= area.AxisX2.Maximum) area.AxisX2.Maximum = area.AxisX2.Minimum + 1;
262	if (area.AxisY.Minimum >= area.AxisY.Maximum) area.AxisY.Maximum = area.AxisY.Minimum + 1;
263	if (area.AxisY2.Minimum >= area.AxisY2.Maximum) area.AxisY2.Maximum = area.AxisY2.Minimum + 1;
264	}
265
266	protected virtual void UpdateYCursorInterval() {
267	double interestingValuesRange = (
268	from series in chart.Series
269	where series.Enabled
270	let values = (from point in series.Points
271	where !point.IsEmpty
272	select point.YValues[0]).DefaultIfEmpty(1.0)
273	let range = values.Max() - values.Min()
274	where range > 0.0
275	select range
276	).DefaultIfEmpty(1.0).Min();
277
278	double digits = (int)Math.Log10(interestingValuesRange) - 3;
279	double yZoomInterval = Math.Pow(10, digits);
280	this.chart.ChartAreas[0].CursorY.Interval = yZoomInterval;
281	}
282
283	protected void UpdateHistogramTransparency() {
284	if (Content.Rows.Any(r => RequiresTransparency(r) && r.VisualProperties.Color.IsEmpty)) {
285	foreach (var series in chart.Series) // sync colors before applying palette colors
286	series.Color = ((DataRow)series.Tag).VisualProperties.Color;
287	chart.ApplyPaletteColors();
288	}
289
290	var numTransparent = Content.Rows.Count(RequiresTransparency);
291	if (numTransparent <= 1) return;
292	foreach (var series in chart.Series) {
293	var row = (DataRow)series.Tag;
294	if (!RequiresTransparency(row))
295	continue;
296	var baseColor = row.VisualProperties.Color;
297	if (baseColor.IsEmpty) baseColor = series.Color;
298	series.Color = Color.FromArgb(180, baseColor);
299	}
300	}
301	private bool RequiresTransparency(DataRow row) {
302	return row.VisualProperties.ChartType == DataRowVisualProperties.DataRowChartType.Histogram
303	&& row.VisualProperties.Aggregation == DataRowVisualProperties.DataRowHistogramAggregation.Overlapping;
304	}
305
306	#region Event Handlers
307	#region Content Event Handlers
308	private void Content_VisualPropertiesChanged(object sender, EventArgs e) {
309	if (InvokeRequired)
310	Invoke(new EventHandler(Content_VisualPropertiesChanged), sender, e);
311	else {
312	ConfigureChartArea(chart.ChartAreas[0]);
313	RecalculateAxesScale(chart.ChartAreas[0]); // axes min/max could have changed
314	}
315	}
316	#endregion
317	#region Rows Event Handlers
318	private void Rows_ItemsAdded(object sender, CollectionItemsChangedEventArgs<DataRow> e) {
319	if (InvokeRequired)
320	Invoke(new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsAdded), sender, e);
321	else {
322	AddDataRows(e.Items);
323	}
324	}
325	private void Rows_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<DataRow> e) {
326	if (InvokeRequired)
327	Invoke(new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsRemoved), sender, e);
328	else {
329	RemoveDataRows(e.Items);
330	}
331	}
332	private void Rows_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<DataRow> e) {
333	if (InvokeRequired)
334	Invoke(new CollectionItemsChangedEventHandler<DataRow>(Rows_ItemsReplaced), sender, e);
335	else {
336	RemoveDataRows(e.OldItems);
337	AddDataRows(e.Items);
338	}
339	}
340	private void Rows_CollectionReset(object sender, CollectionItemsChangedEventArgs<DataRow> e) {
341	if (InvokeRequired)
342	Invoke(new CollectionItemsChangedEventHandler<DataRow>(Rows_CollectionReset), sender, e);
343	else {
344	RemoveDataRows(e.OldItems);
345	AddDataRows(e.Items);
346	}
347	}
348	#endregion
349	#region Row Event Handlers
350	private void Row_VisualPropertiesChanged(object sender, EventArgs e) {
351	if (InvokeRequired)
352	Invoke(new EventHandler(Row_VisualPropertiesChanged), sender, e);
353	else {
354	DataRow row = (DataRow)sender;
355	Series series = chart.Series[row.Name];
356	series.Points.Clear();
357	ConfigureSeries(series, row);
358	if (!invisibleSeries.Contains(series)) {
359	FillSeriesWithRowValues(series, row);
360	RecalculateAxesScale(chart.ChartAreas[0]);
361	UpdateHistogramTransparency();
362	}
363	}
364	}
365	private void Row_NameChanged(object sender, EventArgs e) {
366	if (InvokeRequired)
367	Invoke(new EventHandler(Row_NameChanged), sender, e);
368	else {
369	DataRow row = (DataRow)sender;
370	chart.Series[row.Name].Name = row.Name;
371	}
372	}
373	#endregion
374	#region Values Event Handlers
375	private void Values_ItemsAdded(object sender, CollectionItemsChangedEventArgs<IndexedItem<double>> e) {
376	if (InvokeRequired)
377	Invoke(new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsAdded), sender, e);
378	else {
379	DataRow row = null;
380	valuesRowsTable.TryGetValue((IObservableList<double>)sender, out row);
381	if (row != null) {
382	Series rowSeries = chart.Series[row.Name];
383	if (!invisibleSeries.Contains(rowSeries)) {
384	rowSeries.Points.Clear();
385	FillSeriesWithRowValues(rowSeries, row);
386	RecalculateAxesScale(chart.ChartAreas[0]);
387	UpdateYCursorInterval();
388	}
389	}
390	}
391	}
392	private void Values_ItemsRemoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<double>> e) {
393	if (InvokeRequired)
394	Invoke(new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsRemoved), sender, e);
395	else {
396	DataRow row = null;
397	valuesRowsTable.TryGetValue((IObservableList<double>)sender, out row);
398	if (row != null) {
399	Series rowSeries = chart.Series[row.Name];
400	if (!invisibleSeries.Contains(rowSeries)) {
401	rowSeries.Points.Clear();
402	FillSeriesWithRowValues(rowSeries, row);
403	RecalculateAxesScale(chart.ChartAreas[0]);
404	UpdateYCursorInterval();
405	}
406	}
407	}
408	}
409	private void Values_ItemsReplaced(object sender, CollectionItemsChangedEventArgs<IndexedItem<double>> e) {
410	if (InvokeRequired)
411	Invoke(new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsReplaced), sender, e);
412	else {
413	DataRow row = null;
414	valuesRowsTable.TryGetValue((IObservableList<double>)sender, out row);
415	if (row != null) {
416	Series rowSeries = chart.Series[row.Name];
417	if (!invisibleSeries.Contains(rowSeries)) {
418	if (row.VisualProperties.ChartType == DataRowVisualProperties.DataRowChartType.Histogram) {
419	rowSeries.Points.Clear();
420	FillSeriesWithRowValues(rowSeries, row);
421	} else {
422	foreach (IndexedItem<double> item in e.Items) {
423	if (IsInvalidValue(item.Value))
424	rowSeries.Points[item.Index].IsEmpty = true;
425	else {
426	rowSeries.Points[item.Index].YValues = new double[] { item.Value };
427	rowSeries.Points[item.Index].IsEmpty = false;
428	}
429	}
430	}
431	RecalculateAxesScale(chart.ChartAreas[0]);
432	UpdateYCursorInterval();
433	}
434	}
435	}
436	}
437	private void Values_ItemsMoved(object sender, CollectionItemsChangedEventArgs<IndexedItem<double>> e) {
438	if (InvokeRequired)
439	Invoke(new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_ItemsMoved), sender, e);
440	else {
441	DataRow row = null;
442	valuesRowsTable.TryGetValue((IObservableList<double>)sender, out row);
443	if (row != null) {
444	Series rowSeries = chart.Series[row.Name];
445	if (!invisibleSeries.Contains(rowSeries)) {
446	rowSeries.Points.Clear();
447	FillSeriesWithRowValues(rowSeries, row);
448	RecalculateAxesScale(chart.ChartAreas[0]);
449	UpdateYCursorInterval();
450	}
451	}
452	}
453	}
454
455	private void Values_CollectionReset(object sender, CollectionItemsChangedEventArgs<IndexedItem<double>> e) {
456	if (InvokeRequired)
457	Invoke(new CollectionItemsChangedEventHandler<IndexedItem<double>>(Values_CollectionReset), sender, e);
458	else {
459	DataRow row = null;
460	valuesRowsTable.TryGetValue((IObservableList<double>)sender, out row);
461	if (row != null) {
462	Series rowSeries = chart.Series[row.Name];
463	if (!invisibleSeries.Contains(rowSeries)) {
464	rowSeries.Points.Clear();
465	FillSeriesWithRowValues(rowSeries, row);
466	RecalculateAxesScale(chart.ChartAreas[0]);
467	UpdateYCursorInterval();
468	}
469	}
470	}
471	}
472	#endregion
473	private void configureToolStripMenuItem_Click(object sender, EventArgs e) {
474	ShowConfiguration();
475	}
476	#endregion
477
478	#region Chart Event Handlers
479	private void chart_MouseDown(object sender, MouseEventArgs e) {
480	HitTestResult result = chart.HitTest(e.X, e.Y);
481	if (result.ChartElementType == ChartElementType.LegendItem) {
482	ToggleSeriesVisible(result.Series);
483	}
484	}
485	private void chart_MouseMove(object sender, MouseEventArgs e) {
486	HitTestResult result = chart.HitTest(e.X, e.Y);
487	if (result.ChartElementType == ChartElementType.LegendItem)
488	this.Cursor = Cursors.Hand;
489	else
490	this.Cursor = Cursors.Default;
491	}
492	private void chart_CustomizeLegend(object sender, CustomizeLegendEventArgs e) {
493	foreach (LegendItem legendItem in e.LegendItems) {
494	var series = chart.Series[legendItem.SeriesName];
495	if (series != null) {
496	bool seriesIsInvisible = invisibleSeries.Contains(series);
497	foreach (LegendCell cell in legendItem.Cells) {
498	cell.ForeColor = seriesIsInvisible ? Color.Gray : Color.Black;
499	}
500	}
501	}
502	}
503	#endregion
504
505	private void ToggleSeriesVisible(Series series) {
506	if (!invisibleSeries.Contains(series)) {
507	series.Points.Clear();
508	invisibleSeries.Add(series);
509	} else {
510	invisibleSeries.Remove(series);
511	if (Content != null) {
512
513	var row = (from r in Content.Rows
514	where r.Name == series.Name
515	select r).Single();
516	FillSeriesWithRowValues(series, row);
517	this.chart.Legends[series.Legend].ForeColor = Color.Black;
518	RecalculateAxesScale(chart.ChartAreas[0]);
519	UpdateYCursorInterval();
520	}
521	}
522	}
523
524	private void FillSeriesWithRowValues(Series series, DataRow row) {
525	switch (row.VisualProperties.ChartType) {
526	case DataRowVisualProperties.DataRowChartType.Histogram:
527	// when a single histogram is updated, all histograms must be updated. otherwise the value ranges and bin sizes may not be equal.
528	var histograms = Content.Rows
529	.Where(r => r.VisualProperties.ChartType == DataRowVisualProperties.DataRowChartType.Histogram)
530	.ToList();
531	CalculateHistogram(series, row, histograms);
532	foreach (var h in from r in histograms
533	where r != row
534	let s = chart.Series.FindByName(r.Name)
535	where s != null
536	where !invisibleSeries.Contains(s)
537	select new { row = r, series = s }) {
538	h.series.Points.Clear();
539	CalculateHistogram(h.series, h.row, histograms);
540	}
541	break;
542	default: {
543	bool yLogarithmic = series.YAxisType == AxisType.Primary
544	? Content.VisualProperties.YAxisLogScale
545	: Content.VisualProperties.SecondYAxisLogScale;
546	bool xLogarithmic = series.XAxisType == AxisType.Primary
547	? Content.VisualProperties.XAxisLogScale
548	: Content.VisualProperties.SecondXAxisLogScale;
549	for (int i = 0; i < row.Values.Count; i++) {
550	var value = row.Values[i];
551	var point = new DataPoint();
552	point.XValue = row.VisualProperties.StartIndexZero && !xLogarithmic ? i : i + 1;
553	if (IsInvalidValue(value) \|\| (yLogarithmic && value <= 0))
554	point.IsEmpty = true;
555	else
556	point.YValues = new double[] { value };
557	series.Points.Add(point);
558	}
559	}
560	break;
561	}
562	}
563
564	protected virtual void CalculateHistogram(Series series, DataRow row, IEnumerable<DataRow> histogramRows) {
565	series.Points.Clear();
566	if (!row.Values.Any()) return;
567
568	var validValues = histogramRows.SelectMany(r => r.Values).Where(x => !IsInvalidValue(x)).ToList();
569	if (!validValues.Any()) return;
570
571	int bins = histogramRows.Max(r => r.VisualProperties.Bins);
572	decimal minValue = (decimal)validValues.Min();
573	decimal maxValue = (decimal)validValues.Max();
574	decimal intervalWidth = (maxValue - minValue) / bins;
575	if (intervalWidth < 0) return;
576	if (intervalWidth == 0) {
577	series.Points.AddXY(minValue, row.Values.Count);
578	return;
579	}
580
581	if (!histogramRows.Any(r => r.VisualProperties.ExactBins)) {
582	intervalWidth = (decimal)HumanRoundRange((double)intervalWidth);
583	minValue = Math.Floor(minValue / intervalWidth) * intervalWidth;
584	maxValue = Math.Ceiling(maxValue / intervalWidth) * intervalWidth;
585	}
586
587	decimal intervalCenter = intervalWidth / 2;
588
589	decimal min = 0.0m, max = 0.0m;
590	if (!Double.IsNaN(Content.VisualProperties.XAxisMinimumFixedValue) && !Content.VisualProperties.XAxisMinimumAuto)
591	min = (decimal)Content.VisualProperties.XAxisMinimumFixedValue;
592	else min = minValue;
593	if (!Double.IsNaN(Content.VisualProperties.XAxisMaximumFixedValue) && !Content.VisualProperties.XAxisMaximumAuto)
594	max = (decimal)Content.VisualProperties.XAxisMaximumFixedValue;
595	else max = maxValue + intervalWidth;
596
597	double axisInterval = (double)intervalWidth / row.VisualProperties.ScaleFactor;
598
599	var area = chart.ChartAreas[0];
600	area.AxisX.Interval = axisInterval;
601
602	series.SetCustomProperty("PointWidth", "1"); // 0.8 is the default value
603
604	// get the range or intervals which define the grouping of the frequency values
605	var range = Range(min, max, intervalWidth).Skip(1).ToList();
606
607	// aggregate the row values by unique key and frequency value
608	var valueFrequencies = (from v in row.Values
609	where !IsInvalidValue(v)
610	orderby v
611	group v by v into g
612	select new Tuple<double, double>(g.First(), g.Count())).ToList();
613
614	// ensure that each column is displayed completely on the chart by adding two dummy datapoints on the upper and lower range
615	series.Points.Add(new DataPoint((double)(min - intervalWidth), 0));
616	series.Points.Add(new DataPoint((double)(max + intervalWidth), 0));
617
618	// add data points
619	int j = 0;
620	foreach (var d in range) {
621	double sum = 0.0;
622	// sum the frequency values that fall within the same interval
623	while (j < valueFrequencies.Count && (decimal)valueFrequencies[j].Item1 < d) {
624	sum += valueFrequencies[j].Item2;
625	++j;
626	}
627	string xAxisTitle = string.IsNullOrEmpty(Content.VisualProperties.XAxisTitle)
628	? "X"
629	: Content.VisualProperties.XAxisTitle;
630	string yAxisTitle = string.IsNullOrEmpty(Content.VisualProperties.YAxisTitle)
631	? "Y"
632	: Content.VisualProperties.YAxisTitle;
633	series.Points.Add(new DataPoint((double)(d - intervalCenter), sum) {
634	ToolTip =
635	xAxisTitle + ": [" + (d - intervalWidth) + "-" + d + ")" + Environment.NewLine +
636	yAxisTitle + ": " + sum
637	});
638	}
639	}
640
641	#region Helpers
642	public static IEnumerable<decimal> Range(decimal min, decimal max, decimal step) {
643	decimal i;
644	for (i = min; i <= max; i += step)
645	yield return i;
646
647	if (i != max + step)
648	yield return i;
649	}
650
651	protected void RemoveCustomPropertyIfExists(Series series, string property) {
652	if (series.IsCustomPropertySet(property)) series.DeleteCustomProperty(property);
653	}
654
655	private double HumanRoundRange(double range) {
656	double base10 = Math.Pow(10.0, Math.Floor(Math.Log10(range)));
657	double rounding = range / base10;
658	if (rounding <= 1.5) rounding = 1;
659	else if (rounding <= 2.25) rounding = 2;
660	else if (rounding <= 3.75) rounding = 2.5;
661	else if (rounding <= 7.5) rounding = 5;
662	else rounding = 10;
663	return rounding * base10;
664	}
665
666	private double HumanRoundMax(double max) {
667	double base10;
668	if (max > 0) base10 = Math.Pow(10.0, Math.Floor(Math.Log10(max)));
669	else base10 = Math.Pow(10.0, Math.Ceiling(Math.Log10(-max)));
670	double rounding = (max > 0) ? base10 : -base10;
671	while (rounding < max) rounding += base10;
672	return rounding;
673	}
674
675	private ChartDashStyle ConvertLineStyle(DataRowVisualProperties.DataRowLineStyle dataRowLineStyle) {
676	switch (dataRowLineStyle) {
677	case DataRowVisualProperties.DataRowLineStyle.Dash:
678	return ChartDashStyle.Dash;
679	case DataRowVisualProperties.DataRowLineStyle.DashDot:
680	return ChartDashStyle.DashDot;
681	case DataRowVisualProperties.DataRowLineStyle.DashDotDot:
682	return ChartDashStyle.DashDotDot;
683	case DataRowVisualProperties.DataRowLineStyle.Dot:
684	return ChartDashStyle.Dot;
685	case DataRowVisualProperties.DataRowLineStyle.NotSet:
686	return ChartDashStyle.NotSet;
687	case DataRowVisualProperties.DataRowLineStyle.Solid:
688	return ChartDashStyle.Solid;
689	default:
690	return ChartDashStyle.NotSet;
691	}
692	}
693
694	protected static bool IsInvalidValue(double x) {
695	return double.IsNaN(x) \|\| x < (double)decimal.MinValue \|\| x > (double)decimal.MaxValue;
696	}
697	#endregion
698	}
699	}

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