回答編集履歴
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見直しキャンペーン中
test
CHANGED
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`GridLength`を文字列でバインドすると、`Star`・`Pixcel`両対応でいい感じでした。
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再利用性のないユーザーコントロールに、`DependencyProperty`を生やすのは趣味でないのでベタ書きです(生やすなら汎用的に作りたいという意味です)
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ユーザーコントロールにするなら文字列(か`GridLength`)を中継する`DependencyProperty`を生やすだけです。
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```x
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```xml
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<Window
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x:Class="Questions355107.MainWindow"
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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:local="clr-namespace:Questions355107"
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Width="{Binding Settings.Window.Width, Mode=TwoWay}"
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Height="{Binding Settings.Window.Height, Mode=TwoWay}"
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FontSize="30"
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FontWeight="Bold"
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Left="{Binding Settings.Window.Left, Mode=TwoWay}"
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Top="{Binding Settings.Window.Top, Mode=TwoWay}">
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<Window.DataContext>
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<local:ViewModel />
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</Window.DataContext>
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<Window.Resources>
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<Style TargetType="TextBlock">
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<Setter Property="HorizontalAlignment" Value="Center" />
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<Setter Property="VerticalAlignment" Value="Center" />
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</Style>
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<Style TargetType="GridSplitter">
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<Setter Property="HorizontalAlignment" Value="Stretch" />
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</Style>
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</Window.Resources>
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<DockPanel>
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<StackPanel
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HorizontalAlignment="Center"
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DockPanel.Dock="Top"
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Orientation="Horizontal">
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<Button Command="{Binding SaveCommand}" Content="Save" />
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<Button Command="{Binding LoadCommand}" Content="Load" />
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</StackPanel>
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<Grid>
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<Grid.ColumnDefinitions>
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<ColumnDefinition Width="{Binding Settings.Splitter.Outer1, Mode=TwoWay}" />
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<ColumnDefinition Width="5" />
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<ColumnDefinition Width="{Binding Settings.Splitter.Outer2, Mode=TwoWay}" />
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<ColumnDefinition Width="5" />
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<ColumnDefinition Width="{Binding Settings.Splitter.Outer3, Mode=TwoWay}" />
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</Grid.ColumnDefinitions>
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<Border Background="LightCoral">
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<!--<TextBlock Text="outer ①" />-->
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<Grid Margin="10">
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<Grid.RowDefinitions>
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<RowDefinition Height="{Binding Settings.Splitter.Inner1, Mode=TwoWay}" />
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<RowDefinition Height="5" />
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<RowDefinition Height="{Binding Settings.Splitter.Inner2, Mode=TwoWay}" />
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</Grid.RowDefinitions>
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<Border Background="Pink">
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<TextBlock Text="inner ①" />
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</Border>
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<GridSplitter Grid.Row="1" />
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<Border Grid.Row="2" Background="Orange">
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<TextBlock Text="inner ②" />
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</Border>
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</Grid>
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</Border>
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<GridSplitter Grid.Column="1" />
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<Border Grid.Column="2" Background="LightGreen">
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<TextBlock Text="outer ②" />
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</Border>
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<GridSplitter Grid.Column="3" />
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<Border Grid.Column="4" Background="SkyBlue">
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<TextBlock Text="outer ③" />
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</Border>
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</Grid>
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</DockPanel>
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</Window>
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```
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```
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```cs
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using CommunityToolkit.Mvvm.ComponentModel;
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using CommunityToolkit.Mvvm.Input;
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using System.Diagnostics;
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using System.Text.Json;
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using System.Text.Json.Serialization;
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using System.Windows;
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namespace Questions355107
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{
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public class WindowModel : ObservableObject
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{
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public double Top { get => _Top; set => SetProperty(ref _Top, value); }
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private double _Top = double.NaN; // 動かさずにSaveすると位置を復元しないが、普通そういうことにはならんでしょう
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public double Left { get => _Left; set => SetProperty(ref _Left, value); }
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private double _Left = double.NaN;
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public double Width { get => _Width; set => SetProperty(ref _Width, value); }
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private double _Width = 800;
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public double Height { get => _Height; set => SetProperty(ref _Height, value); }
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private double _Height = 450;
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}
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public class SplitterModel : ObservableObject
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{
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public string Outer1 { get => _Outer1; set => SetProperty(ref _Outer1, value); }
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private string _Outer1 = "200"; // Pixcel指定(何もしていないのではみ出ます^^;
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public string Outer2 { get => _Outer2; set => SetProperty(ref _Outer2, value); }
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private string _Outer2 = "1*"; // Star指定
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public string Outer3 { get => _Outer3; set => SetProperty(ref _Outer3, value); }
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private string _Outer3 = "2*";
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public string Inner1 { get => _Inner1; set => SetProperty(ref _Inner1, value); }
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private string _Inner1 = "1*";
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public string Inner2 { get => _Inner2; set => SetProperty(ref _Inner2, value); }
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private string _Inner2 = "1*";
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}
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public class SettingsModel
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{
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public WindowModel Window { get; set; } = new();
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public SplitterModel Splitter { get; set; } = new();
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}
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public class ViewModel : ObservableObject
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{
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public SettingsModel Settings { get => _Settings; set => SetProperty(ref _Settings, value); }
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private SettingsModel _Settings;
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public RelayCommand SaveCommand { get; }
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public RelayCommand LoadCommand { get; }
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private string settingsJson;
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private readonly JsonSerializerOptions options = new()
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{
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NumberHandling = JsonNumberHandling.AllowNamedFloatingPointLiterals,
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WriteIndented = true,
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};
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public ViewModel()
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{
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Settings = new(); // 本来はファイルから
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SaveCommand = new(() =>
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{
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// ファイルにセーブしたつもり
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settingsJson = JsonSerializer.Serialize(Settings, options);
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Debug.WriteLine(settingsJson);
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});
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LoadCommand = new(() =>
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{
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// 私は普段起動時に読むだけなのでPropertyChangedすらしないが、
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// 起動中に変更する場合nullでも入れてリセットしないとうまく反映されなかった(Topだけ入らない等
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Settings = null;
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// ファイルからロードしたつもり
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Settings = JsonSerializer.Deserialize<SettingsModel>(settingsJson, options);
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});
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SaveCommand.Execute(null); // ヌルリよけ
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}
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}
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public partial class MainWindow : Window
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{
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public MainWindow() => InitializeComponent();
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}
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}
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```
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`INotifyPropertyChanged`・`ICommand`実装は↓を使用しました。
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[NuGet Gallery | CommunityToolkit.Mvvm 7.0.3](https://www.nuget.org/packages/CommunityToolkit.Mvvm/7.0.3)
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.NET Core 3.1より前の場合は↓を入れてください。
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[NuGet Gallery | System.Text.Json 5.0.2](https://www.nuget.org/packages/System.Text.Json)
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C#9で書いたので`new()`でエラーが出たら型を書いてください。
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[Target-typed new expressions - C# 9.0 specification proposals | Microsoft Docs](https://docs.microsoft.com/ja-jp/dotnet/csharp/language-reference/proposals/csharp-9.0/target-typed-new)
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