kmpdfkit_demo/compdfkit_demo_windows/compdfkit/compdfkit-tools/PDFView/PDFScaling/PDFScalingUI/CPDFScalingUI.xaml.cs

using compdfkit_tools.Common;
using ComPDFKitViewer.PdfViewer;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Runtime.CompilerServices;
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 compdfkit_tools.PDFControlUI
{
    /// <summary>
    /// PDFScalingControl.xaml 的交互逻辑
    /// </summary>
    public partial class CPDFScalingUI : UserControl, INotifyPropertyChanged
    {
        public CPDFViewer PDFView { get; set; }

        private int _scale = 100;
        public int Scale
        {
            get { return _scale; }
            set
            {
                if (_scale != value)
                {
                    _scale = value;
                    OnPropertyChanged(nameof(Scale));
                }
            }
        }


        public event EventHandler<string> SetScaleEvent;
        public event EventHandler<string> SetPresetScaleEvent;
        public event EventHandler ScaleIncreaseEvent;
        public event EventHandler ScaleDecreaseEvent;


        public CPDFScalingUI()
        {
            InitializeComponent();
            DataContext = this;
            DropDownNumberBoxControl.InputEnterEvent += DropDownNumberBoxControl_InputEnterEvent;
            DropDownNumberBoxControl.SetPresetEvent += DropDownNumberBoxControl_SetPresetEvent;
            InitPresetNumberArray();
        }

        private void DropDownNumberBoxControl_SetPresetEvent(object sender, string e)
        {
            SetPresetScaleEvent?.Invoke(this, e);
        }

        public void InitPresetNumberArray()
        {
            List<int> list = new List<int>();
            list.Add(25);
            list.Add(50);
            list.Add(100);
            list.Add(200);
            list.Add(400);
            list.Add(800);
            list.Add(1600);
            DropDownNumberBoxControl.InitPresetNumberArray(list);
        }

        private void DropDownNumberBoxControl_InputEnterEvent(object sender, string e)
        {
            SetScaleEvent?.Invoke(this,e);
        }

        private void ScaleDecreaseButton_Click(object sender, RoutedEventArgs e)
        {
            ScaleDecreaseEvent?.Invoke(this,e);
        }

        private void ScaleIncreaseButton_Click(object sender, RoutedEventArgs e)
        {
            ScaleIncreaseEvent?.Invoke(this,e);
        }

        public event PropertyChangedEventHandler PropertyChanged;
        protected void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}