質問編集履歴
2
タイトルの変更と、分かったことを追記しました
test
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File without changes
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test
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@@ -272,6 +272,15 @@
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272
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Canvas.SetTop(r, info.Y);
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}
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```
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275
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+
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276
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###分かったこと
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277
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画面上にボタンを置き
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278
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「vm.RectInfoCollection.Add(new RectInfo("3", 10, 10, 100, 100, "Red", ""));」としてみたところ、四角形が描画されました。
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279
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+
起動時に作成したデータでは四角形が出来ず、DataGridのみに表示されますが、ボタンで実行すると四角形描画とDataGridへの追加もどちらもできるようです。
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画面上に置いたボタンで追加できるのであれば、
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Binding自体は問題ない気がします。
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+
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### 補足情報（FW/ツールのバージョンなど）
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276
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Visualstudio2022 V17.6.3
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277
286
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.NET 6.0 C#
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1
大幅に修正しました。
test
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File without changes
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test
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@@ -12,243 +12,266 @@
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12
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【1】
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WPF 動的生成したRectangleがドラッグで移動できない、Bindingが難しい…
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https://teratail.com/questions/j700zzpncph60k
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→ソースが変わる前のものを利用しています。
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【2】
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WPF C# ImageSourceを利用しているからか、画像がロックされてしまう
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https://teratail.com/questions/t6uox4f1iujybm
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### 試したこと
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73
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<ListView Grid.Column="2" IsSynchronizedWithCurrentItem="True" ItemsSource="{Binding Items}" ScrollViewer.HorizontalScrollBarVisibility="Disabled">
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<ListView.ItemsPanel>
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<ItemsPanelTemplate>
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<WrapPanel />
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</ItemsPanelTemplate>
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</ListView.ItemsPanel>
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<ListView.ItemTemplate>
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<DataTemplate>
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<Grid Width="150" Height="150">
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<TextBlock Text="{Binding FileTitle}" />
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<Image Source="{Binding FilePath, Converter={StaticResource ImageConverter}}" />
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85
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</Grid>
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</DataTemplate>
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87
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</ListView.ItemTemplate>
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88
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</ListView>
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89
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<StackPanel Grid.Row="1" Grid.Column="2" Orientation="Horizontal">
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90
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<Button x:Name="MainPicShow" Margin="5" Padding="10" Content="メインウィンドウに表示"
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91
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Click="Ok_Button_Click" Command="{Binding ApplyCommand}" CommandParameter="{Binding PicItems/}"/>
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92
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<Button Margin="5" Padding="10" Content="次のリンク画像決定" />
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<Button Margin="5" Padding="10" Content="Button" />
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</StackPanel>
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95
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</Grid>
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96
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</DockPanel>
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97
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</Window>
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98
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-
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99
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```
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100
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```SubWindow.xaml.cs
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101
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using wpfRectangleBindingTest.ViewModels;
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102
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-
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103
|
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namespace wpfRectangleBindingTest.Views
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21
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+
|
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22
|
+
ViewModelを1つにまとめました。
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23
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+
Itemsという同じ名称のものは、「RectItems」「PicItems」としました。
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24
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+
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25
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+
```MainWindow.xaml
|
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26
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<Grid>
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27
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<Grid.RowDefinitions>
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28
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<RowDefinition Height="30" />
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29
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<RowDefinition Height="600"/>
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30
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<RowDefinition Height="*"/>
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31
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</Grid.RowDefinitions>
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32
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<ToolBar Grid.Row="0" VerticalAlignment="Top" Height="30">
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33
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<Button Content="画像選択" Width="128" Height="32" Click="Button_Click"/>
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34
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<RadioButton x:Name="DefaultButton" Width="32" Height="32"
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35
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Content="?" IsChecked="True" />
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36
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<RadioButton x:Name="RectButton" Width="32" Height="32">
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37
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<Rectangle Width="24" Height="16" Stroke="Black"/>
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38
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</RadioButton>
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39
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</ToolBar>
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40
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+
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41
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<!-- <Image Grid.Row="1" MinWidth="600" MinHeight="600" Height="600" MaxWidth="800" MaxHeight="600" Width="800" Source="{Binding SelectedPic.FilePath, Converter={StaticResource ImageConverter}}" StretchDirection="DownOnly" HorizontalAlignment="Left" VerticalAlignment="Top" />-->
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42
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<local:MyCanvas MinHeight="600" MaxHeight="600" Height="600" MinWidth="800" Width="800" MaxWidth="800" Grid.Row="1" RectItems="{Binding RectInfoCollection}" SelectRect="{Binding SelectRect, Mode=TwoWay}" >
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43
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</local:MyCanvas>
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44
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<local:MyDataGrid Grid.Row="2" DataContext="{Binding }"/>
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45
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+
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46
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</Grid>
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47
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+
```
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48
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+
```MainWindow.cs
|
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49
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+
public partial class MainWindow : Window
|
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50
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+
{
|
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51
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+
public ViewModel vm ;
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52
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+
public MainWindow()
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53
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+
{
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54
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+
InitializeComponent();
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55
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var imageFolder = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "image");
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56
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vm = new ViewModel(imageFolder);
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57
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this.DataContext = vm;
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58
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+
}
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59
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+
private void Button_Click(object sender, RoutedEventArgs e)
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60
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+
=> new SubWindow((ViewModel)DataContext).ShowDialog();
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61
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+
|
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62
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+
private void Window_Loaded(object sender, RoutedEventArgs e)
|
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63
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+
{
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64
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+
vm.RectInfoCollection.Add(new RectInfo("1", 10, 10, 100, 100, "Red", ""));
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65
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+
vm.RectInfoCollection.Add(new RectInfo("2", 100, 100, 200, 200, "Blue", ""));
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66
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+
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67
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+
}
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68
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+
}
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69
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+
|
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70
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+
```
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71
|
+
```ViewModel.cs
|
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72
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+
public partial class ViewModel : BindableBase
|
|
104
73
|
{
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74
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+
private RectInfo? _SelectedRect;
|
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75
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+
public RectInfo? SelectedRect { get => _SelectedRect; set => SetProperty(ref _SelectedRect, value); }
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76
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+
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77
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+
public ObservableCollection<Item> PicItems { get; } = new();
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78
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+
|
|
79
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+
private Item? _SelectPic;
|
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80
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+
public Item? SelectPic { get => _SelectPic; set => SetProperty(ref _SelectPic, value); }
|
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81
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+
|
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82
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+
private readonly string folder;
|
|
105
|
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public
|
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83
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+
public ViewModel(string folder)
|
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106
|
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{
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|
84
|
+
{
|
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107
|
-
|
|
85
|
+
this.folder = folder;
|
|
86
|
+
Directory.CreateDirectory(folder);
|
|
108
|
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pri
|
|
87
|
+
ImportFiles(Directory.EnumerateFiles(folder, "*.jpg", SearchOption.TopDirectoryOnly));
|
|
109
|
-
|
|
88
|
+
}
|
|
89
|
+
|
|
90
|
+
[RelayCommand]
|
|
110
|
-
|
|
91
|
+
private void Apply(Item? item) => SelectPic = item;
|
|
111
|
-
|
|
92
|
+
|
|
112
|
-
|
|
93
|
+
public void ImportFiles(IEnumerable<string> paths)
|
|
113
|
-
|
|
94
|
+
{
|
|
114
|
-
InitializeComponent();
|
|
115
|
-
|
|
95
|
+
foreach (var path in paths) PicItems.Add(new(path));
|
|
116
|
-
|
|
96
|
+
}
|
|
117
|
-
|
|
97
|
+
|
|
118
|
-
|
|
98
|
+
public void AddItem(string path, Func<bool> isOverwrite)
|
|
119
|
-
|
|
99
|
+
{
|
|
100
|
+
var fileName = System.IO.Path.GetFileNameWithoutExtension(path);
|
|
120
|
-
|
|
101
|
+
var outPath = System.IO.Path.Combine(folder, $"{fileName}.jpg");
|
|
102
|
+
|
|
103
|
+
if (File.Exists(outPath))
|
|
104
|
+
{
|
|
121
|
-
|
|
105
|
+
if (!isOverwrite()) return;
|
|
122
|
-
e.
|
|
106
|
+
PicItems.Remove(PicItems.FirstOrDefault(x => x.FilePath == outPath)!);
|
|
123
|
-
}
|
|
107
|
+
}
|
|
108
|
+
|
|
124
|
-
|
|
109
|
+
using (var fsin = new FileStream(path, FileMode.Open, FileAccess.ReadWrite))
|
|
125
|
-
|
|
110
|
+
using (var fsout = new FileStream(outPath, FileMode.Create, FileAccess.Write))
|
|
126
|
-
{
|
|
111
|
+
{
|
|
127
|
-
if (!e.Data.GetDataPresent(DataFormats.FileDrop)) return;
|
|
128
|
-
|
|
129
|
-
var files = (string[])e.Data.GetData(DataFormats.FileDrop);
|
|
130
|
-
|
|
131
|
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var ok = files.Where(x => SupportedFormats.Contains(System.IO.Path.GetExtension(x).ToLower()));
|
|
132
|
-
foreach (var path in ok)
|
|
133
|
-
{
|
|
134
|
-
PicModel.AddItem(path, IsOverwrite);
|
|
135
|
-
bool IsOverwrite()
|
|
136
|
-
{
|
|
137
|
-
var msg = $"同名のファイルが既にあります。\n上書きしますか？\n\n{path}";
|
|
138
|
-
|
|
112
|
+
var f = BitmapFrame.Create(fsin, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.OnDemand);
|
|
113
|
+
var meta = f.Metadata.Clone() as BitmapMetadata ?? new BitmapMetadata("jpg");
|
|
139
|
-
|
|
114
|
+
var enc = new JpegBitmapEncoder();
|
|
115
|
+
enc.Frames.Add(BitmapFrame.Create(f, f.Thumbnail, meta, f.ColorContexts));
|
|
116
|
+
enc.Save(fsout);
|
|
140
|
-
|
|
117
|
+
}
|
|
141
|
-
|
|
118
|
+
|
|
142
|
-
|
|
143
|
-
var ng = files.Where(x => !SupportedFormats.Contains(System.IO.Path.GetExtension(x).ToLower()));
|
|
144
|
-
if (ng.Any()) MessageBox.Show(this, $"{string.Join("\n", ng)}\nのファイルは読めませんでした");
|
|
145
|
-
}
|
|
146
|
-
|
|
119
|
+
PicItems.Add(new(outPath));
|
|
147
120
|
}
|
|
148
121
|
}
|
|
149
|
-
|
|
150
|
-
```
|
|
151
|
-
```PicModels.cs
|
|
152
|
-
using CommunityToolkit.Mvvm.ComponentModel;
|
|
153
|
-
using CommunityToolkit.Mvvm.Input;
|
|
154
|
-
using System;
|
|
155
|
-
using System.Collections.Generic;
|
|
156
|
-
using System.Collections.ObjectModel;
|
|
157
|
-
using System.IO;
|
|
158
|
-
using System.Linq;
|
|
159
|
-
using System.Text;
|
|
160
|
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using System.Threading.Tasks;
|
|
161
|
-
using System.Windows.Media.Imaging;
|
|
162
|
-
using System.Windows;
|
|
163
|
-
|
|
164
|
-
namespace wpfRectangleBindingTest.ViewModels
|
|
165
|
-
{
|
|
166
|
-
|
|
167
|
-
public partial class PicModel : ObservableObject
|
|
168
|
-
{
|
|
169
|
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public ObservableCollection<Item> PicItems { get; } = new();
|
|
170
|
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[ObservableProperty] private bool isSubWindowShown;
|
|
171
|
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[ObservableProperty] private Item? selectPic;
|
|
172
|
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private readonly string folder;
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|
173
|
-
|
|
174
|
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public PicModel(string folder)
|
|
175
|
-
{
|
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176
|
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this.folder = folder;
|
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177
|
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Directory.CreateDirectory(folder);
|
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178
|
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ImportFiles(Directory.EnumerateFiles(folder, "*.jpg", SearchOption.TopDirectoryOnly));
|
|
179
|
-
}
|
|
180
|
-
|
|
181
|
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[RelayCommand]
|
|
182
|
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private void Delete(Item item)
|
|
183
|
-
{
|
|
184
|
-
if (MessageBox.Show(item.FileTitle + "を削除しても良いですか？",
|
|
185
|
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"ファイル削除", MessageBoxButton.YesNo, MessageBoxImage.Information) == MessageBoxResult.No)
|
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186
|
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{ return; }
|
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187
|
-
|
|
188
|
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PicItems.Remove(item);
|
|
189
|
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File.Delete(item.FilePath);
|
|
190
|
-
}
|
|
191
|
-
|
|
192
|
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[RelayCommand]
|
|
193
|
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private void Apply(Item? item) => SelectPic = item;
|
|
194
|
-
|
|
195
|
-
public void ImportFiles(IEnumerable<string> paths)
|
|
196
|
-
{
|
|
197
|
-
foreach (var path in paths) PicItems.Add(new(path));
|
|
198
|
-
}
|
|
199
|
-
|
|
200
|
-
public void AddItem(string path, Func<bool> isOverwrite)
|
|
201
|
-
{
|
|
202
|
-
var fileName = System.IO.Path.GetFileNameWithoutExtension(path);
|
|
203
|
-
var outPath = System.IO.Path.Combine(folder, $"{fileName}.jpg");
|
|
204
|
-
|
|
205
|
-
if (File.Exists(outPath))
|
|
206
|
-
{
|
|
207
|
-
if (!isOverwrite()) return;
|
|
208
|
-
PicItems.Remove(PicItems.FirstOrDefault(x => x.FilePath == outPath)!);
|
|
209
|
-
}
|
|
210
|
-
|
|
211
|
-
using (var fsin = new FileStream(path, FileMode.Open, FileAccess.ReadWrite))
|
|
212
|
-
using (var fsout = new FileStream(outPath, FileMode.Create, FileAccess.Write))
|
|
213
|
-
{
|
|
214
|
-
var f = BitmapFrame.Create(fsin, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.OnDemand);
|
|
215
|
-
var meta = f.Metadata.Clone() as BitmapMetadata ?? new BitmapMetadata("jpg");
|
|
216
|
-
var enc = new JpegBitmapEncoder();
|
|
217
|
-
enc.Frames.Add(BitmapFrame.Create(f, f.Thumbnail, meta, f.ColorContexts));
|
|
218
|
-
enc.Save(fsout);
|
|
219
|
-
}
|
|
220
|
-
|
|
221
|
-
PicItems.Add(new(outPath));
|
|
222
|
-
}
|
|
223
|
-
}
|
|
224
|
-
}
|
|
225
122
|
```
|
|
226
123
|
|
|
227
124
|
### 発生している問題・エラーメッセージ
|
|
228
|
-
このPicModelは、MainWindowでもSubWindowでも利用します。
|
|
229
|
-
|
|
125
|
+
- Rectangleが表示されない（SelectRectもRe
|
|
230
|
-
新しくPicModelとして作成して参照させようとしてます。
|
|
231
|
-
|
|
232
|
-
SubWindowのxamlに以下のように記載してみました。
|
|
233
|
-
xmlns:localtest="clr-namespace:wpfRectangleBindingTest.ViewModels"
|
|
234
|
-
|
|
126
|
+
- Canvasの裏に画像を表示させようとImageを追加したが、それも表示されない（SelectPicのデータはあり）
|
|
235
|
-
|
|
236
|
-
|
|
127
|
+
|
|
237
|
-
"PicModel" は名前空間 "clr-namespace:wpfRectangleBindingTest.ViewModels" に存在しません。とエラーになります。
|
|
238
|
-
|
|
239
|
-
何が悪いのでしょうか…？
|
|
240
|
-
|
|
241
|
-
```
|
|
128
|
+
```MyCanvas.cs
|
|
242
|
-
private readonly ViewModel PicModel;
|
|
243
|
-
|
|
244
|
-
|
|
129
|
+
public MyCanvas()
|
|
245
130
|
{
|
|
246
131
|
InitializeComponent();
|
|
247
|
-
DataContext = this.PicModel = PicModel;
|
|
248
|
-
}
|
|
132
|
+
}
|
|
133
|
+
|
|
134
|
+
private System.Windows.Point _dragOffset;
|
|
135
|
+
private System.Windows.Shapes.Rectangle? _dragRectangle;
|
|
136
|
+
public RectInfo SelectRect
|
|
137
|
+
{
|
|
138
|
+
get { return (RectInfo)GetValue(SelectRectProperty); }
|
|
139
|
+
set { SetValue(SelectRectProperty, value); }
|
|
140
|
+
}
|
|
141
|
+
|
|
142
|
+
public static readonly DependencyProperty SelectRectProperty =
|
|
143
|
+
DependencyProperty.Register("SelectRect", typeof(RectInfo), typeof(MyCanvas), new PropertyMetadata(null, SelectRect_Changed));
|
|
144
|
+
|
|
145
|
+
private static void SelectRect_Changed(DependencyObject d, DependencyPropertyChangedEventArgs e)
|
|
146
|
+
{
|
|
147
|
+
(d as MyCanvas)?.SelectRectChanged(e.OldValue, e.NewValue);
|
|
148
|
+
}
|
|
149
|
+
|
|
150
|
+
private void SelectRectChanged(object oldValue, object newValue)
|
|
151
|
+
{
|
|
152
|
+
if (oldValue is RectInfo o)
|
|
153
|
+
{
|
|
154
|
+
var target = FindRectangle(o);
|
|
155
|
+
if (target != null)
|
|
156
|
+
{
|
|
157
|
+
target.StrokeDashArray = null;
|
|
158
|
+
}
|
|
159
|
+
}
|
|
160
|
+
if (newValue is RectInfo n)
|
|
161
|
+
{
|
|
162
|
+
var target = FindRectangle(n);
|
|
163
|
+
if (target != null)
|
|
164
|
+
{
|
|
165
|
+
target.StrokeDashArray = new DoubleCollection() { 2 };
|
|
166
|
+
}
|
|
167
|
+
}
|
|
168
|
+
}
|
|
169
|
+
|
|
170
|
+
public ObservableCollection<RectInfo> RectItems
|
|
171
|
+
{
|
|
172
|
+
get { return (ObservableCollection<RectInfo>)GetValue(RectItemsProperty); }
|
|
173
|
+
set { SetValue(RectItemsProperty, value); }
|
|
174
|
+
}
|
|
175
|
+
|
|
176
|
+
public static readonly DependencyProperty RectItemsProperty =
|
|
177
|
+
DependencyProperty.Register("RectItems", typeof(ObservableCollection<RectInfo>), typeof(MyCanvas), new PropertyMetadata(null, RectItemsChangedCallback));
|
|
178
|
+
|
|
179
|
+
private static void RectItemsChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
|
|
180
|
+
{
|
|
181
|
+
(d as MyCanvas)?.RegisterCollectionChanged();
|
|
182
|
+
}
|
|
183
|
+
|
|
184
|
+
private void RegisterCollectionChanged()
|
|
185
|
+
{
|
|
186
|
+
RectItems.CollectionChanged += RectItems_CollectionChanged;
|
|
187
|
+
}
|
|
188
|
+
|
|
189
|
+
private void RectItems_CollectionChanged(object? sender, NotifyCollectionChangedEventArgs e)
|
|
190
|
+
{
|
|
191
|
+
switch (e.Action)
|
|
192
|
+
{
|
|
193
|
+
case NotifyCollectionChangedAction.Add:
|
|
194
|
+
if (e.NewItems != null)
|
|
195
|
+
{
|
|
196
|
+
foreach (RectInfo mp in e.NewItems)
|
|
197
|
+
{
|
|
198
|
+
AddRectangle(mp);
|
|
199
|
+
mp.PropertyChanged += RectInfo_PropertyChanged;
|
|
200
|
+
}
|
|
201
|
+
}
|
|
202
|
+
break;
|
|
203
|
+
|
|
204
|
+
case NotifyCollectionChangedAction.Remove:
|
|
205
|
+
if (e.OldItems != null)
|
|
206
|
+
{
|
|
207
|
+
foreach (RectInfo info in e.OldItems)
|
|
208
|
+
{
|
|
209
|
+
var target = FindRectangle(info);
|
|
210
|
+
if (target != null)
|
|
211
|
+
{
|
|
212
|
+
canvas2.Children.Remove(target);
|
|
213
|
+
info.PropertyChanged -= RectInfo_PropertyChanged;
|
|
214
|
+
}
|
|
215
|
+
}
|
|
216
|
+
}
|
|
217
|
+
break;
|
|
218
|
+
|
|
219
|
+
default:
|
|
220
|
+
break;
|
|
221
|
+
}
|
|
222
|
+
}
|
|
223
|
+
|
|
224
|
+
private System.Windows.Shapes.Rectangle? FindRectangle(RectInfo info)
|
|
225
|
+
{
|
|
226
|
+
if (info == null) return null;
|
|
227
|
+
return canvas2.Children.OfType<System.Windows.Shapes.Rectangle>().FirstOrDefault(i => info == (RectInfo)i.Tag);
|
|
228
|
+
}
|
|
229
|
+
|
|
230
|
+
internal void AddRectangle(RectInfo info)
|
|
231
|
+
{
|
|
232
|
+
var r = new System.Windows.Shapes.Rectangle
|
|
233
|
+
{
|
|
234
|
+
Width = 20,
|
|
235
|
+
Height = 20,
|
|
236
|
+
Stroke=Brushes.Black,
|
|
237
|
+
StrokeThickness=5,
|
|
238
|
+
ToolTip = info.Name,
|
|
239
|
+
Tag = info
|
|
240
|
+
};
|
|
241
|
+
|
|
242
|
+
r.Width = info.Width;
|
|
243
|
+
r.Height = info.Height;
|
|
244
|
+
|
|
245
|
+
try
|
|
246
|
+
{
|
|
247
|
+
var brush = (SolidColorBrush)new BrushConverter().ConvertFromString(info.BorderColor);
|
|
248
|
+
r.Stroke = brush;
|
|
249
|
+
}
|
|
250
|
+
catch
|
|
251
|
+
{
|
|
252
|
+
r.Stroke = Brushes.Transparent;
|
|
253
|
+
}
|
|
254
|
+
|
|
255
|
+
try {
|
|
256
|
+
var brush = (SolidColorBrush)new BrushConverter().ConvertFromString(info.FillColor);
|
|
257
|
+
r.Fill = brush;
|
|
258
|
+
}
|
|
259
|
+
catch
|
|
260
|
+
{
|
|
261
|
+
r.Fill = Brushes.Transparent;
|
|
262
|
+
}
|
|
263
|
+
|
|
264
|
+
//イベント追加
|
|
265
|
+
r.MouseDown += DragStart;
|
|
266
|
+
r.MouseUp += (o, e) => { _dragRectangle = null; r.ReleaseMouseCapture(); };
|
|
267
|
+
r.MouseMove += MoveRectangle;
|
|
268
|
+
|
|
269
|
+
//パネルに追加
|
|
270
|
+
canvas2.Children.Add(r);
|
|
271
|
+
Canvas.SetLeft(r, info.X);
|
|
272
|
+
Canvas.SetTop(r, info.Y);
|
|
273
|
+
}
|
|
249
|
-
```
|
|
274
|
+
```
|
|
250
|
-
|
|
251
|
-
|
|
252
275
|
### 補足情報（FW/ツールのバージョンなど）
|
|
253
276
|
Visualstudio2022 V17.6.3
|
|
254
277
|
.NET 6.0 C#
|