using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace PDF_Office.Views.Scan { /// /// ScanViwer.xaml 的交互逻辑 /// public partial class ScanViwer : UserControl { public ScanViwer() { InitializeComponent(); } double scale = 1; private void Grid_MouseWheel(object sender, MouseWheelEventArgs e) { if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl)) { if (e.Delta > 0) { scale += 0.1; ImageGrid.Width = 500* scale; ImageGrid.Height = 500 * scale; } else { if (scale > 0.2) { scale -= 0.2; } ImageGrid.Width = 500* scale; ImageGrid.Height = 500 * scale; } } } } }