PDFOffice_Windows_exe/PDF Office/Views/Scan/ScanViwer.xaml.cs

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
{
    /// <summary>
    /// ScanViwer.xaml 的交互逻辑
    /// </summary>
    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;

                }
            }

        }
    }
}