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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.VisualBasic.FileIO;
using System.Runtime.InteropServices;
namespace CurrencyRatesChart
{
public partial class FormMirandaCurrencyRatesChart : Form
{
public FormMirandaCurrencyRatesChart()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
string[] cmd_line_args = Environment.GetCommandLineArgs();
for (int i = 1; i < cmd_line_args.Length; ++i)
{
string data_file = cmd_line_args[i];
AddDataFromFile(data_file);
}
}
private void dateFrom_ValueChanged(object sender, EventArgs e)
{
if (dateFrom.Value < dateTo.Value)
{
chartCurrencyRates.ChartAreas[0].AxisX.Minimum = dateFrom.Value.ToOADate();
chartCurrencyRates.Invalidate();
}
}
private void dateTo_ValueChanged(object sender, EventArgs e)
{
if (dateTo.Value > dateFrom.Value)
{
chartCurrencyRates.ChartAreas[0].AxisX.Maximum = dateTo.Value.ToOADate();
chartCurrencyRates.Invalidate();
}
}
int WM_COPYDATA = 0x4A;
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
[MarshalAs(UnmanagedType.LPWStr)]
public String lpData;
}
protected override void WndProc(ref Message msg)
{
if (msg.Msg == WM_COPYDATA)
{
COPYDATASTRUCT cp = (COPYDATASTRUCT)Marshal.PtrToStructure(msg.LParam, typeof(COPYDATASTRUCT));
if (/**(cp.dwData) == 0x1945 && */cp.lpData != null)
{
AddDataFromFile(cp.lpData);
}
}
base.WndProc(ref msg);
}
private void AddDataFromFile(string data_file)
{
using (TextFieldParser parser = new Microsoft.VisualBasic.FileIO.TextFieldParser(data_file))
{
parser.TrimWhiteSpace = true;
parser.TextFieldType = FieldType.Delimited;
parser.SetDelimiters("\t");
System.Windows.Forms.DataVisualization.Charting.Series series = null;
while (true)
{
string[] parts = parser.ReadFields();
if (parts == null)
{
break;
}
if (parts.Length >= 3)
{
string name = parts[0];
string date = parts[1];
string value = parts[2];
if (series == null)
{
if (chartCurrencyRates.Series.FindByName(name) == null)
{
chartCurrencyRates.Series.Add(name);
series = chartCurrencyRates.Series[name];
series.ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.Line;
}
else
{
break;
}
}
DateTime dt;
double d;
if (Double.TryParse(value, out d) && DateTime.TryParse(date, out dt))
{
series.Points.AddXY(dt, d);
if (!dateMin.HasValue)
{
dateMin = new DateTime();
dateMin = dt;
}
else if (dt < dateMin)
{
dateMin = dt;
}
if (!dateMax.HasValue)
{
dateMax = new DateTime();
dateMax = dt;
}
else if (dt > dateMax)
{
dateMax = dt;
}
}
}
}
}
if (dateMin.HasValue && dateMax.HasValue)
{
chartCurrencyRates.ChartAreas[0].AxisX.Minimum = dateMin.Value.ToOADate();
chartCurrencyRates.ChartAreas[0].AxisX.Maximum = dateMax.Value.ToOADate();
dateFrom.Value = dateMin.Value;
dateTo.Value = dateMax.Value;
}
}
private DateTime? dateMin = null;
private DateTime? dateMax = null;
}
}
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