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https://gitee.com/akwkevin/aistudio.-wpf.-diagram
synced 2026-04-13 12:46:36 +08:00
项目结构调整
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艾竹
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<UserControl x:Class="Wpf.CartesianChart.ZoomingAndPanning.ZoomingAndPanning"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
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xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
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xmlns:local="clr-namespace:Wpf.CartesianChart"
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xmlns:lvc="clr-namespace:LiveCharts.Wpf;assembly=LiveCharts.Wpf"
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xmlns:zoomingAndPanning="clr-namespace:Wpf.CartesianChart.ZoomingAndPanning"
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mc:Ignorable="d"
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d:DesignHeight="300" d:DesignWidth="300" d:DataContext="{d:DesignInstance local:ZoomingAndPanning}">
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<UserControl.Resources>
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<zoomingAndPanning:ZoomingModeCoverter x:Key="ZoomingModeCoverter"></zoomingAndPanning:ZoomingModeCoverter>
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</UserControl.Resources>
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<Grid>
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<Grid.RowDefinitions>
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<RowDefinition Height="Auto"></RowDefinition>
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<RowDefinition Height="Auto"></RowDefinition>
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<RowDefinition Height="*"></RowDefinition>
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</Grid.RowDefinitions>
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<TextBlock Grid.Row="0" TextWrapping="Wrap">
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Use the Chart.Zoom property to enable zooming and panning, you have some options: None, X, Y and XY, click, hold and drag the chart for panning.
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</TextBlock>
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<StackPanel Grid.Row="1">
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<Button Click="ToogleZoomingMode">
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<TextBlock>Toggle zoming mode, current is:
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<TextBlock Text="{Binding ZoomingMode, Converter={StaticResource ZoomingModeCoverter}}"/>
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</TextBlock>
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</Button>
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<Button Click="ResetZoomOnClick">Reset Zoom</Button>
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</StackPanel>
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<lvc:CartesianChart Grid.Row="2" Series="{Binding SeriesCollection}" Zoom="{Binding ZoomingMode}" >
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<lvc:CartesianChart.AxisX>
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<lvc:Axis Name="X" LabelFormatter="{Binding XFormatter}"
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Separator="{x:Static lvc:DefaultAxes.CleanSeparator}"/>
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</lvc:CartesianChart.AxisX>
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<lvc:CartesianChart.AxisY>
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<lvc:Axis Name="Y" LabelFormatter="{Binding YFormatter}"/>
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</lvc:CartesianChart.AxisY>
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</lvc:CartesianChart>
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</Grid>
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</UserControl>
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@@ -0,0 +1,142 @@
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using System;
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using System.ComponentModel;
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using System.Globalization;
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using System.Windows;
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using System.Windows.Data;
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using System.Windows.Media;
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using LiveCharts;
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using LiveCharts.Defaults;
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using LiveCharts.Wpf;
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namespace Wpf.CartesianChart.ZoomingAndPanning
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{
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/// <summary>
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/// Interaction logic for ZoomingAndPanning.xaml
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/// </summary>
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public partial class ZoomingAndPanning : INotifyPropertyChanged
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{
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private ZoomingOptions _zoomingMode;
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public ZoomingAndPanning()
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{
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InitializeComponent();
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var gradientBrush = new LinearGradientBrush {StartPoint = new Point(0, 0),
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EndPoint = new Point(0, 1)};
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gradientBrush.GradientStops.Add(new GradientStop(Color.FromRgb(33, 148, 241), 0));
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gradientBrush.GradientStops.Add(new GradientStop(Colors.Transparent, 1));
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SeriesCollection = new SeriesCollection
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{
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new LineSeries
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{
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Values = GetData(),
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Fill = gradientBrush,
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StrokeThickness = 1,
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PointGeometrySize = 0
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}
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};
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ZoomingMode = ZoomingOptions.X;
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XFormatter = val => new DateTime((long) val).ToString("dd MMM");
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YFormatter = val => val.ToString("C");
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DataContext = this;
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}
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public SeriesCollection SeriesCollection { get; set; }
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public Func<double, string> XFormatter { get; set; }
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public Func<double, string> YFormatter { get; set; }
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public ZoomingOptions ZoomingMode
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{
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get { return _zoomingMode; }
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set
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{
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_zoomingMode = value;
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OnPropertyChanged();
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}
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}
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private void ToogleZoomingMode(object sender, RoutedEventArgs e)
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{
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switch (ZoomingMode)
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{
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case ZoomingOptions.None:
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ZoomingMode = ZoomingOptions.X;
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break;
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case ZoomingOptions.X:
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ZoomingMode = ZoomingOptions.Y;
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break;
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case ZoomingOptions.Y:
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ZoomingMode = ZoomingOptions.Xy;
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break;
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case ZoomingOptions.Xy:
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ZoomingMode = ZoomingOptions.None;
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break;
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default:
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throw new ArgumentOutOfRangeException();
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}
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}
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private ChartValues<DateTimePoint> GetData()
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{
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var r = new Random();
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var trend = 100;
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var values = new ChartValues<DateTimePoint>();
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for (var i = 0; i < 100; i++)
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{
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var seed = r.NextDouble();
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if (seed > .8) trend += seed > .9 ? 50 : -50;
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values.Add(new DateTimePoint(DateTime.Now.AddDays(i), trend + r.Next(0, 10)));
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}
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return values;
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}
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public event PropertyChangedEventHandler PropertyChanged;
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protected virtual void OnPropertyChanged(string propertyName = null)
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{
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if (PropertyChanged != null) PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
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}
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private void ResetZoomOnClick(object sender, RoutedEventArgs e)
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{
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//Use the axis MinValue/MaxValue properties to specify the values to display.
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//use double.Nan to clear it.
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X.MinValue = double.NaN;
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X.MaxValue = double.NaN;
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Y.MinValue = double.NaN;
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Y.MaxValue = double.NaN;
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}
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}
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public class ZoomingModeCoverter : IValueConverter
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{
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public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
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{
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switch ((ZoomingOptions) value)
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{
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case ZoomingOptions.None:
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return "None";
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case ZoomingOptions.X:
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return "X";
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case ZoomingOptions.Y:
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return "Y";
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case ZoomingOptions.Xy:
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return "XY";
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default:
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throw new ArgumentOutOfRangeException();
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}
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}
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public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
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{
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throw new NotImplementedException();
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}
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}
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}
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