60 lines
1.6 KiB
C#
60 lines
1.6 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows;
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using System.Windows.Controls;
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using Microsoft.Research.DynamicDataDisplay.Common;
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namespace Microsoft.Research.DynamicDataDisplay.Charts.Navigation
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{
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/// <summary>
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/// Represents a horizontal scroll bar on the borrom of <see cref="Plotter"/>.
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/// Uses ChartPlotter.Plotter.Viewport.DataDomain property as a source of data about current position and position limits.
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/// </summary>
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public sealed class HorizontalScrollBar : PlotterScrollBar
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{
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/// <summary>
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/// Initializes a new instance of the <see cref="HorizontalScrollBar"/> class.
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/// </summary>
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public HorizontalScrollBar()
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{
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ScrollBar.Orientation = Orientation.Horizontal;
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}
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protected override void UpdateScrollBar(Viewport2D viewport)
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{
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if (viewport != null && !viewport.Domain.IsEmpty)
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{
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var visibleRange = new Range<double>(viewport.Visible.XMin, viewport.Visible.XMax);
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double size = visibleRange.Max - visibleRange.Min;
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ScrollBar.ViewportSize = size;
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var domainRange = new Range<double>(viewport.Domain.XMin, viewport.Domain.XMax);
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ScrollBar.Minimum = domainRange.Min;
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ScrollBar.Maximum = domainRange.Max - size;
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ScrollBar.Value = visibleRange.Min;
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ScrollBar.Visibility = Visibility.Visible;
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}
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else
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{
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ScrollBar.Visibility = Visibility.Collapsed;
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}
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}
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protected override DataRect CreateVisibleRect(DataRect rect, double value)
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{
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rect.XMin = value;
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return rect;
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}
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protected override Panel GetHostPanel(Plotter plotter)
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{
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return plotter.BottomPanel;
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}
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}
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}
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