93 lines
2.6 KiB
C#
93 lines
2.6 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
using System.Windows;
|
|
using System.Windows.Controls;
|
|
using System.Windows.Documents;
|
|
using System.Globalization;
|
|
using System.Diagnostics;
|
|
using Microsoft.Research.DynamicDataDisplay.Charts.Axes;
|
|
|
|
namespace Microsoft.Research.DynamicDataDisplay.Charts
|
|
{
|
|
/// <summary>
|
|
/// Represents an axis label provider for double ticks, generating labels with numbers in exponential form when it is appropriate.
|
|
/// </summary>
|
|
public sealed class ExponentialLabelProvider : NumericLabelProviderBase
|
|
{
|
|
/// <summary>
|
|
/// Initializes a new instance of the <see cref="ExponentialLabelProvider"/> class.
|
|
/// </summary>
|
|
public ExponentialLabelProvider() { }
|
|
|
|
/// <summary>
|
|
/// Creates labels by given ticks info.
|
|
/// Is not intended to be called from your code.
|
|
/// </summary>
|
|
/// <param name="ticksInfo">The ticks info.</param>
|
|
/// <returns>
|
|
/// Array of <see cref="UIElement"/>s, which are axis labels for specified axis ticks.
|
|
/// </returns>
|
|
public override UIElement[] CreateLabels(ITicksInfo<double> ticksInfo)
|
|
{
|
|
var ticks = ticksInfo.Ticks;
|
|
|
|
Init(ticks);
|
|
|
|
UIElement[] res = new UIElement[ticks.Length];
|
|
|
|
LabelTickInfo<double> tickInfo = new LabelTickInfo<double> { Info = ticksInfo.Info };
|
|
|
|
for (int i = 0; i < res.Length; i++)
|
|
{
|
|
var tick = ticks[i];
|
|
tickInfo.Tick = tick;
|
|
tickInfo.Index = i;
|
|
|
|
string labelText = GetString(tickInfo);
|
|
|
|
TextBlock label;
|
|
if (labelText.Contains('E'))
|
|
{
|
|
string[] substrs = labelText.Split('E');
|
|
string mantissa = substrs[0];
|
|
string exponenta = substrs[1];
|
|
exponenta = exponenta.TrimStart('+');
|
|
Span span = new Span();
|
|
span.Inlines.Add(String.Format(CultureInfo.CurrentCulture, "{0}·10", mantissa));
|
|
Span exponentaSpan = new Span(new Run(exponenta));
|
|
exponentaSpan.BaselineAlignment = BaselineAlignment.Superscript;
|
|
exponentaSpan.FontSize = 8;
|
|
span.Inlines.Add(exponentaSpan);
|
|
|
|
label = new TextBlock(span);
|
|
LabelProviderProperties.SetExponentialIsCommonLabel(label, false);
|
|
}
|
|
else
|
|
{
|
|
label = (TextBlock)GetResourceFromPool();
|
|
if (label == null)
|
|
{
|
|
label = new TextBlock();
|
|
}
|
|
|
|
label.Text = labelText;
|
|
}
|
|
res[i] = label;
|
|
label.ToolTip = tick.ToString(CultureInfo.CurrentCulture);
|
|
|
|
ApplyCustomView(tickInfo, label);
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
protected override bool ReleaseCore(UIElement label)
|
|
{
|
|
bool isNotExponential = LabelProviderProperties.GetExponentialIsCommonLabel(label);
|
|
return isNotExponential && CustomView == null;
|
|
}
|
|
}
|
|
}
|