Neuerstellung

- Quelle: https://github.com/oxyplot/oxyplot
2023-09-02 09:24:59 +02:00
commit 9520c1fa4a
810 changed files with 117869 additions and 0 deletions
--- a/Source/Examples/WPF/ExampleBrowser/MainWindowViewModel.cs
+++ b/Source/Examples/WPF/ExampleBrowser/MainWindowViewModel.cs
@@ -0,0 +1,165 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="MainWindowViewModel.cs" company="OxyPlot">
+//   Copyright (c) 2014 OxyPlot contributors
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace ExampleBrowser
+{
+    using ExampleLibrary;
+    using OxyPlot;
+    using System;
+    using System.Collections.Generic;
+    using System.ComponentModel;
+    using System.Linq;
+    using System.Windows.Data;
+
+    public class MainWindowViewModel : INotifyPropertyChanged
+    {
+        private bool _CanTranspose;
+        private bool _CanReverse;
+        private string _Code;
+        private Renderer _Renderer;
+        private PlotModel _PlotModel;
+        private bool _Transposed;
+        private bool _Reversed;
+        private IEnumerable<ExampleInfo> examples;
+        private ExampleInfo selectedExample;
+
+        public MainWindowViewModel()
+        {
+            this.Examples = ExampleLibrary.Examples.GetList();
+            this.ExamplesView = CollectionViewSource.GetDefaultView(this.Examples.OrderBy(e => e.Category));
+            this.ExamplesView.GroupDescriptions.Add(new PropertyGroupDescription("Category"));
+        }
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public PlotModel ActiveModel => this.CanvasModel ?? this.SkiaModel;
+
+        public bool CanTranspose
+        {
+            get => this._CanTranspose;
+            private set
+            {
+                this._CanTranspose = value;
+                this.RaisePropertyChanged(nameof(this.CanTranspose));
+            }
+        }
+
+        public bool CanReverse
+        {
+            get => this._CanReverse;
+            private set
+            {
+                this._CanReverse = value;
+                this.RaisePropertyChanged(nameof(this.CanReverse));
+            }
+        }
+
+        public PlotModel CanvasModel => this.Renderer == Renderer.Canvas ? this._PlotModel : null;
+
+        public string Code
+        {
+            get => this._Code;
+            set
+            {
+                this._Code = value;
+                this.RaisePropertyChanged(nameof(this.Code));
+            }
+        }
+
+        public IEnumerable<ExampleInfo> Examples
+        {
+            get => this.examples;
+            set
+            {
+                this.examples = value;
+                this.RaisePropertyChanged(nameof(this.Examples));
+            }
+        }
+
+        public ICollectionView ExamplesView { get; set; }
+
+        public Renderer Renderer
+        {
+            get => this._Renderer;
+            set
+            {
+                this._Renderer = value;
+                this.CoerceRenderer();
+                this.RaisePropertyChanged(nameof(this.Renderer));
+            }
+        }
+
+        private void CoerceRenderer()
+        {
+            ((IPlotModel)this._PlotModel)?.AttachPlotView(null);
+            this.RaisePropertyChanged(nameof(this.SkiaModel));
+            this.RaisePropertyChanged(nameof(this.CanvasXamlModel));
+            this.RaisePropertyChanged(nameof(this.CanvasModel));
+        }
+
+        public IEnumerable<Renderer> Renderers => Enum.GetValues(typeof(Renderer)).Cast<Renderer>();
+
+        public ExampleInfo SelectedExample
+        {
+            get => this.selectedExample;
+            set
+            {
+                this.selectedExample = value;
+                this.CoerceSelectedExample();
+                this.RaisePropertyChanged(nameof(this.SelectedExample));
+            }
+        }
+
+        public PlotModel SkiaModel => this.Renderer == Renderer.SkiaSharp ? this._PlotModel : null;
+
+        public PlotModel CanvasXamlModel => this.Renderer == Renderer.Canvas_XAML ? this._PlotModel : null;
+
+        public bool Transposed
+        {
+            get => this._Transposed;
+            set
+            {
+                this._Transposed = value;
+                this.UpdatePlotModel();
+                this.RaisePropertyChanged(nameof(this.Transposed));
+            }
+        }
+
+        public bool Reversed
+        {
+            get => this._Reversed;
+            set
+            {
+                this._Reversed = value;
+                this.UpdatePlotModel();
+                this.RaisePropertyChanged(nameof(this.Reversed));
+            }
+        }
+
+        protected void RaisePropertyChanged(string property)
+        {
+            this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(property));
+        }
+
+        private void CoerceSelectedExample()
+        {
+            this.CanTranspose = this.SelectedExample?.IsTransposable == true;
+            this.CanReverse = this.SelectedExample?.IsReversible == true;
+            this.UpdatePlotModel();
+        }
+
+        private void UpdatePlotModel()
+        {
+            var flags = ExampleInfo.PrepareFlags(
+                this.CanTranspose && this.Transposed,
+                this.CanReverse && this.Reversed);
+
+            this._PlotModel = this.SelectedExample?.GetModel(flags);
+            this.Code = this.SelectedExample?.GetCode(flags);
+            this.CoerceRenderer();
+        }
+    }
+}