kmpdfkit_demo/compdfkit_demo_windows/compdfkit/compdfkit-tools/Common/PropertyControl/PDFFont/CPDFFontUI.xaml.cs

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.Common
{
    /// <summary>
    /// CPDFFontUI.xaml 的交互逻辑
    /// </summary>
    public partial class CPDFFontUI : UserControl, INotifyPropertyChanged
    {

        public event PropertyChangedEventHandler PropertyChanged;
        public event EventHandler FontChanged;

        public string FontFamilyValue
        {
            get => FontFamilyComboBox.SelectedItem.ToString();
            set => FontFamilyComboBox.SelectedItem = value;
        }

        public bool IsRewrite = false;

        public bool IsBold;
        public bool IsItalic;

        public TextAlignment TextAlignment
        {
            get
            {
                if ((bool)LeftAlignRadioButton.IsChecked)
                {
                    return TextAlignment.Left;
                }
                else if ((bool)CenterAlignRadioButton.IsChecked)
                {
                    return TextAlignment.Center;
                }
                else
                {
                    return TextAlignment.Right;
                }
            }
        }

        private int _fontSizeValue = 20;
        public int FontSizeValue
        {
            get => _fontSizeValue;
            set
            {
                _fontSizeValue = value;
                OnPropertyChanged(nameof(FontSizeValue));
                OnFontChanged();
                FontChanged?.Invoke(this, EventArgs.Empty);
            }
        }


        public CPDFFontUI()
        {
            InitializeComponent();
            InitComboBox();
            this.DataContext = this;
        }

        public void InitComboBox()
        {
            List<string> fontNameList = new List<string>()
            {
                {"Courier" },
                {"Helvetica" },
                {"Times" }
            };
            FontFamilyComboBox.ItemsSource = fontNameList;
            FontFamilyComboBox.SelectedIndex = 1;

            List<string> fontStyleList = new List<string>()
            {
                {"Common" },
                {"Bold" },
                {"Italic" },
                {"Bold and Italic" }
            };
            FontStyleComboBox.ItemsSource = fontStyleList;
            FontStyleComboBox.SelectedIndex = 0;

            List<int> fontSizeList = new List<int>()
            {
                {6},
                {8},
                {9},
                {10},
                {12},
                {14},
                {18},
                {20},
                {24},
                {26},
                {28},
                {32},
                {30},
                {32},
                {48},
                {72}
            };
            FontSizeComboBox.InitPresetNumberArray(fontSizeList);
        }
        protected void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        private void FontFamilyComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (!IsRewrite)
            {
                FontFamilyTextBox.Text = (sender as ComboBox).SelectedItem.ToString();
                FontChanged?.Invoke(this, EventArgs.Empty);
            }

        }

        private void FontStyleComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            FontStyleTextBox.Text = (sender as ComboBox).SelectedItem.ToString();
            if(FontStyleTextBox.Text == "Common")
            {
                IsBold = false;
                IsItalic = false;
            }
            else if (FontStyleTextBox.Text == "Italic")
            {
                IsBold = false;
                IsItalic = true;
            }
            else if (FontStyleTextBox.Text == "Bold")
            {
                IsBold = true;
                IsItalic = false;
            }
            else
            {
                IsBold = true;
                IsItalic = true;
            }
            FontChanged?.Invoke(this, EventArgs.Empty);
        }

        private void AlignRadioButton_Checked(object sender, RoutedEventArgs e)
        {
            FontChanged?.Invoke(this, EventArgs.Empty);
        }
        private void OnFontChanged()
        {
            FontChanged?.Invoke(this, EventArgs.Empty);
        }
    }
}