1 | using System;
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2 | using System.Collections.Generic;
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3 | using System.Linq;
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4 | using System.Text;
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5 | using System.Windows;
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6 | using System.Windows.Controls;
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7 | using Microsoft.Research.DynamicDataDisplay.Common;
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8 |
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9 | namespace Microsoft.Research.DynamicDataDisplay.Charts.Navigation
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10 | {
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11 | /// <summary>
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12 | /// Represents a horizontal scroll bar on the borrom of <see cref="Plotter"/>.
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13 | /// Uses ChartPlotter.Plotter.Viewport.DataDomain property as a source of data about current position and position limits.
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14 | /// </summary>
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15 | public sealed class HorizontalScrollBar : PlotterScrollBar
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16 | {
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17 | /// <summary>
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18 | /// Initializes a new instance of the <see cref="HorizontalScrollBar"/> class.
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19 | /// </summary>
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20 | public HorizontalScrollBar()
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21 | {
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22 | ScrollBar.Orientation = Orientation.Horizontal;
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23 | }
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24 |
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25 | protected override void UpdateScrollBar(Viewport2D viewport)
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26 | {
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27 | if (viewport != null && !viewport.Domain.IsEmpty)
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28 | {
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29 | var visibleRange = new Range<double>(viewport.Visible.XMin, viewport.Visible.XMax);
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30 |
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31 | double size = visibleRange.Max - visibleRange.Min;
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32 | ScrollBar.ViewportSize = size;
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33 |
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34 | var domainRange = new Range<double>(viewport.Domain.XMin, viewport.Domain.XMax);
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35 | ScrollBar.Minimum = domainRange.Min;
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36 | ScrollBar.Maximum = domainRange.Max - size;
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37 |
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38 | ScrollBar.Value = visibleRange.Min;
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39 |
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40 | ScrollBar.Visibility = Visibility.Visible;
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41 | }
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42 | else
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43 | {
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44 | ScrollBar.Visibility = Visibility.Collapsed;
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45 | }
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46 | }
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47 |
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48 | protected override DataRect CreateVisibleRect(DataRect rect, double value)
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49 | {
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50 | rect.XMin = value;
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51 | return rect;
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52 | }
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53 |
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54 | protected override Panel GetHostPanel(Plotter plotter)
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55 | {
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56 | return plotter.BottomPanel;
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57 | }
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58 | }
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59 | }
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