ImageResizeView.xaml.cs

using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using ImageResize.ViewModel;
using ImageResize.Model;
using System.Windows.Media.Imaging;
using System;
using System.Windows.Media;

namespace ImageResize.View
{
    public partial class ImageResizeView : UserControl
    {
        public ImageResizeView()
        {
            InitializeComponent();
        }

        private void ListView_Drop(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(DataFormats.FileDrop))
            {
                var files = (string[])e.Data.GetData(DataFormats.FileDrop);
                if (DataContext is ImageResizeViewModel viewModel)
                {
                    viewModel.AddFiles(files);
                }
            }
        }

        private void ListView_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            if (sender is ListView listView && listView.SelectedItem is ImageFile selectedImage)
            {
                ShowImagePreview(selectedImage.FullPath);
            }
        }

        private void ShowImagePreview(string imagePath)
        {
            try
            {
                var image = new BitmapImage();
                image.BeginInit();
                image.UriSource = new Uri(imagePath);
                image.CacheOption = BitmapCacheOption.OnLoad;
                image.EndInit();
                image.Freeze();

                double targetWidth = image.PixelWidth / 3.0;
                double targetHeight = image.PixelHeight / 3.0;

                var workArea = SystemParameters.WorkArea;
                double screenWidth = workArea.Width * 0.9;
                double screenHeight = workArea.Height * 0.9;

                if (targetWidth > screenWidth || targetHeight > screenHeight)
                {
                    double widthScale = screenWidth / targetWidth;
                    double heightScale = screenHeight / targetHeight;
                    double scale = Math.Min(widthScale, heightScale);

                    targetWidth *= scale;
                    targetHeight *= scale;
                }

                var window = new Window
                {
                    Title = System.IO.Path.GetFileName(imagePath),
                    Width = targetWidth,
                    Height = targetHeight,
                    ResizeMode = ResizeMode.CanResizeWithGrip,
                    WindowStartupLocation = WindowStartupLocation.CenterScreen,
                    Topmost = true
                };

                var imageView = new Image
                {
                    Source = image,
                    Stretch = Stretch.Uniform
                };

                var viewbox = new Viewbox
                {
                    Child = imageView,
                    Stretch = Stretch.Uniform
                };

                window.Content = viewbox;
                window.Show();
            }
            catch (Exception ex)
            {
                MessageBox.Show(string.Format(Translate.ImagePreviewError, ex.Message), Translate.ErrorOccurred, MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }

        private void DeleteMenuItem_Click(object sender, RoutedEventArgs e)
        {
            if (sender is MenuItem menuItem &&
                menuItem.DataContext is ImageFile itemToDelete &&
                DataContext is ImageResizeViewModel viewModel)
            {
                viewModel.RemoveFile(itemToDelete);
            }
        }
    }
}