97 lines
2.3 KiB
C#
97 lines
2.3 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.Controls.Primitives;
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using System.Windows.Controls;
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using System.Windows;
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using Microsoft.Research.DynamicDataDisplay.Charts;
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using Microsoft.Research.DynamicDataDisplay.Common;
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namespace Microsoft.Research.DynamicDataDisplay
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{
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public abstract class PlotterScrollBar : IPlotterElement
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{
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protected PlotterScrollBar()
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{
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scrollBar.Scroll += OnScroll;
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}
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private void OnScroll(object sender, ScrollEventArgs e)
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{
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DataRect visible = plotter.Viewport.Visible;
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visible = CreateVisibleRect(visible, scrollBar.Value);
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plotter.Viewport.Visible = visible;
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}
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private readonly ScrollBar scrollBar = new ScrollBar();
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protected ScrollBar ScrollBar
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{
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get { return scrollBar; }
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}
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private Plotter2D plotter;
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protected Plotter2D Plotter
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{
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get { return plotter; }
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}
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private void OnViewportPropertyChanged(object sender, ExtendedPropertyChangedEventArgs e)
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{
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if (e.PropertyName == "Visible" || e.PropertyName == "Output")
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{
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UpdateScrollBar((Viewport2D)sender);
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}
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}
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#region IPlotterElement Members
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void IPlotterElement.OnPlotterAttached(Plotter plotter)
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{
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GetHostPanel(plotter).Children.Add(scrollBar);
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Plotter2D plotter2d = (Plotter2D)plotter;
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this.plotter = plotter2d;
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var viewport = plotter2d.Viewport;
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viewport.PropertyChanged += OnViewportPropertyChanged;
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viewport.DomainChanged += OnViewportDomainChanged;
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UpdateScrollBar(viewport);
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}
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protected abstract void UpdateScrollBar(Viewport2D viewport);
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protected virtual void SetValue(Range<double> visibleRange, Range<double> domainRange)
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{
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scrollBar.Value = visibleRange.Min;
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}
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private void OnViewportDomainChanged(object sender, EventArgs e)
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{
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UpdateScrollBar((Viewport2D)sender);
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}
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protected abstract DataRect CreateVisibleRect(DataRect rect, double value);
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protected abstract Panel GetHostPanel(Plotter plotter);
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void IPlotterElement.OnPlotterDetaching(Plotter plotter)
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{
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this.plotter.Viewport.PropertyChanged -= OnViewportPropertyChanged;
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this.plotter.Viewport.DomainChanged -= OnViewportDomainChanged;
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GetHostPanel(plotter).Children.Remove(scrollBar);
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UpdateScrollBar(null);
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this.plotter = null;
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}
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Plotter IPlotterElement.Plotter
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{
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get { return plotter; }
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}
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#endregion
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}
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}
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