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Form1.cs
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Form1.cs
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using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Windows.Forms;
using System.Xml;
using DevExpress.Utils;
using DevExpress.XtraCharts;
using DevExpress.XtraEditors;
namespace DateTimeAggregation {
public partial class Form1 : Form {
const string title = "Measure Unit: ";
List<ComboBoxItem> gridAlignmentItems;
protected XYDiagram Diagram { get { return chartControl1.Diagram as XYDiagram; } }
protected AxisX AxisX { get { return Diagram.AxisX; } }
Series SeriesGBP { get { return chartControl1.Series[0]; } }
public Form1() {
InitializeComponent();
LoadSeries(SeriesGBP, "GbpUsdRate.xml", "GBPUSD", "GBP");
gridAlignmentItems = CreateGridAlignmentComboBoxItems();
FillScaleMode();
FillMeasureUnit();
FillFunctions();
cbMeasureUnit.SelectedIndex = 1;
}
List<ComboBoxItem> CreateGridAlignmentComboBoxItems() {
return new List<ComboBoxItem>() {
new ComboBoxItem("Auto", SetAutoGridAlignment),
new ComboBoxItem("Year", SetYearGridAlignment),
new ComboBoxItem("Quarter", SetQuarterGridAlignment),
new ComboBoxItem("Month", SetMonthGridAlignment),
new ComboBoxItem("Week", SetWeekGridAlignment),
new ComboBoxItem("Day", SetDayGridAlignment),
};
}
void FillScaleMode() {
List<ComboBoxItem> scaleModeItems = new List<ComboBoxItem>() {
new ComboBoxItem("Automatic", SetAutomaticScaleMode),
new ComboBoxItem("Manual", SetManualScaleMode),
new ComboBoxItem("Continuous", SetContinuousScaleMode),
};
cbScaleMode.Properties.Items.AddRange(scaleModeItems);
cbScaleMode.SelectedIndex = 1;
}
void FillMeasureUnit() {
List<ComboBoxItem> measureUnitItems = new List<ComboBoxItem>() {
new ComboBoxItem("Year", SetYearMeasureUnit),
new ComboBoxItem("Quarter", SetQuarterMeasureUnit),
new ComboBoxItem("Month", SetMonthMeasureUnit),
new ComboBoxItem("Week", SetWeekMeasureUnit),
new ComboBoxItem("Day", SetDayMeasureUnit),
};
cbMeasureUnit.Properties.Items.AddRange(measureUnitItems);
}
void FillFunctions() {
List<ComboBoxItem> aggregateFunctionItems = new List<ComboBoxItem>() {
new ComboBoxItem("Average", SetAverageFunctionItems),
new ComboBoxItem("Minimum", SetMinimumFunctionItems),
new ComboBoxItem("Maximum", SetMaximumFunctionItems),
new ComboBoxItem("Sum", SetSumFunctionItems),
new ComboBoxItem("Count", SetCountFunctionItems),
};
cbAggregateFunction.Properties.Items.AddRange(aggregateFunctionItems);
cbAggregateFunction.SelectedIndex = 0;
}
void LoadSeries(Series series, string xmlFile, string name, string shortName) {
LoadPoints(series, AssemblyHelper.GetEmbeddedResourceStream(typeof(ComboBoxItem).Assembly, xmlFile, false));
series.Name = name;
}
void LoadPoints(Series series, Stream xmlStream) {
if (series != null && xmlStream != null) {
XmlDocument document = new XmlDocument();
document.Load(xmlStream);
series.Points.BeginUpdate();
series.Points.Clear();
if (document != null) {
XmlNodeList elements = document.DocumentElement.GetElementsByTagName("CurrencyRate");
foreach (XmlNode element in elements) {
DateTime date = DateTime.Parse(element.ChildNodes[0].InnerText);
double rate = double.Parse(element.ChildNodes[1].InnerText, CultureInfo.InvariantCulture);
series.Points.Add(new SeriesPoint(date, rate));
}
}
series.Points.EndUpdate();
}
}
void ResetAxisOptions() {
AxisX.DateTimeScaleOptions.GridSpacing = 1;
AxisX.Tickmarks.MinorVisible = false;
AxisX.Label.Angle = 0;
SetAxisXGridAuto();
}
void SetAxisXGridAuto() {
AxisX.DateTimeScaleOptions.AutoGrid = true;
}
void ScaleOptionConditions() {
cbGridAlignment.Enabled = true;
cbMeasureUnit.Enabled = true;
cbAggregateFunction.Enabled = true;
switch (AxisX.DateTimeScaleOptions.ScaleMode) {
case ScaleMode.Automatic: {
cbGridAlignment.Enabled = false;
cbMeasureUnit.Enabled = false;
}
break;
case ScaleMode.Manual: {
cbGridAlignment.Enabled = true;
cbMeasureUnit.Enabled = true;
cbAggregateFunction.Enabled = true;
break;
}
case ScaleMode.Continuous: {
cbAggregateFunction.Enabled = false;
cbMeasureUnit.Enabled = false;
}
break;
}
}
void SetAxisXGridAlignment(DateTimeGridAlignment gridAlignment) {
AxisX.DateTimeScaleOptions.AutoGrid = false;
AxisX.DateTimeScaleOptions.GridAlignment = gridAlignment;
}
void SetAxisXAggregateFunction(AggregateFunction aggregateFunction) {
AxisX.DateTimeScaleOptions.AggregateFunction = aggregateFunction;
}
void SetAutomaticScaleMode() {
ResetAxisOptions();
AxisX.DateTimeScaleOptions.ScaleMode = ScaleMode.Automatic;
UpdateGridAlignment(1);
}
void SetManualScaleMode() {
AxisX.DateTimeScaleOptions.ScaleMode = ScaleMode.Manual;
UpdateGridAlignment(2);
}
void SetContinuousScaleMode() {
AxisX.DateTimeScaleOptions.ScaleMode = ScaleMode.Continuous;
UpdateGridAlignment(3);
}
void SetYearMeasureUnit() {
AxisX.Label.TextPattern = "{A:yyyy}";
AxisX.DateTimeScaleOptions.MeasureUnit = DateTimeMeasureUnit.Year;
UpdateGridAlignment(1);
}
void SetQuarterMeasureUnit() {
ResetAxisOptions();
AxisX.Label.TextPattern = "{A:q}";
AxisX.DateTimeScaleOptions.MeasureUnit = DateTimeMeasureUnit.Quarter;
UpdateGridAlignment(2);
}
void SetMonthMeasureUnit() {
ResetAxisOptions();
AxisX.Label.TextPattern = "{A:MMMM}";
AxisX.DateTimeScaleOptions.MeasureUnit = DateTimeMeasureUnit.Month;
UpdateGridAlignment(3);
}
void SetWeekMeasureUnit() {
ResetAxisOptions();
AxisX.Label.TextPattern = "{A:d MMMM yyyy}";
AxisX.DateTimeScaleOptions.MeasureUnit = DateTimeMeasureUnit.Week;
UpdateGridAlignment(4);
}
void SetDayMeasureUnit() {
ResetAxisOptions();
AxisX.Label.TextPattern = "{A:d}";
AxisX.DateTimeScaleOptions.MeasureUnit = DateTimeMeasureUnit.Day;
UpdateGridAlignment(5);
}
void UpdateGridAlignment(int itemsCount) {
itemsCount = Math.Max(itemsCount, 1) + 1;
int selectedIndex = Math.Max(cbGridAlignment.SelectedIndex, 0);
cbGridAlignment.Properties.Items.Clear();
cbGridAlignment.Properties.Items.AddRange(gridAlignmentItems.GetRange(0, itemsCount));
cbGridAlignment.SelectedIndex = Math.Min(itemsCount - 1, selectedIndex);
ScaleOptionConditions();
ExecuteSelectedItemAction(cbGridAlignment);
}
void SetDayGridAlignment() {
SetAxisXGridAlignment(DateTimeGridAlignment.Day);
}
void SetWeekGridAlignment() {
SetAxisXGridAlignment(DateTimeGridAlignment.Week);
}
void SetMonthGridAlignment() {
SetAxisXGridAlignment(DateTimeGridAlignment.Month);
}
void SetQuarterGridAlignment() {
SetAxisXGridAlignment(DateTimeGridAlignment.Quarter);
}
void SetYearGridAlignment() {
SetAxisXGridAlignment(DateTimeGridAlignment.Year);
}
void SetAutoGridAlignment() {
SetAxisXGridAuto();
}
void SetCountFunctionItems() {
SetAxisXAggregateFunction(AggregateFunction.Count);
}
void SetSumFunctionItems() {
SetAxisXAggregateFunction(AggregateFunction.Sum);
}
void SetMaximumFunctionItems() {
SetAxisXAggregateFunction(AggregateFunction.Maximum);
}
void SetMinimumFunctionItems() {
SetAxisXAggregateFunction(AggregateFunction.Minimum);
}
void SetAverageFunctionItems() {
SetAxisXAggregateFunction(AggregateFunction.Average);
}
void ExecuteSelectedItemAction(ComboBoxEdit comboBox) {
ComboBoxItem item = comboBox.SelectedItem as ComboBoxItem;
if (item != null) {
Action itemAction = item.Action;
if (itemAction != null)
itemAction();
}
}
void ComboBoxSelectedValueChanged(object sender, EventArgs e) {
ComboBoxEdit comboBox = sender as ComboBoxEdit;
if (comboBox != null)
ExecuteSelectedItemAction(comboBox);
}
private void checkEdit1_CheckedChanged(object sender, EventArgs e) {
AxisX.DateTimeScaleOptions.WorkdaysOnly = ((CheckEdit)sender).Checked;
}
}
public class ComboBoxItem {
string titleText;
public Action Action { get; private set; }
public ComboBoxItem(string titleText, Action action) {
this.titleText = titleText;
Action = action;
}
public override string ToString() {
return titleText;
}
}
}