ScreenToGif/Controls/HexadecimalBox.cs

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using System;
using System.Linq;
using System.Text.RegularExpressions;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;

namespace ScreenToGif.Controls
{
    public class HexadecimalBox : ExtendedTextBox
    {
        #region Dependency Properties

        public static readonly DependencyProperty RedProperty = DependencyProperty.Register("Red", typeof(int), typeof(HexadecimalBox), new PropertyMetadata(0, Value_PropertyChanged));

        public static readonly DependencyProperty GreenProperty = DependencyProperty.Register("Green", typeof(int), typeof(HexadecimalBox), new PropertyMetadata(0, Value_PropertyChanged));

        public static readonly DependencyProperty BlueProperty = DependencyProperty.Register("Blue", typeof(int), typeof(HexadecimalBox), new PropertyMetadata(0, Value_PropertyChanged));

        public static readonly DependencyProperty AlphaProperty = DependencyProperty.Register("Alpha", typeof(int), typeof(HexadecimalBox), new PropertyMetadata(255, Value_PropertyChanged));

        public static readonly DependencyProperty DisplayGlyphProperty = DependencyProperty.Register("DisplayGlyph", typeof(bool), typeof(HexadecimalBox), new PropertyMetadata(true));

        #endregion

        #region Properties

        public int Red
        {
            get { return (int)GetValue(RedProperty); }
            set { SetValue(RedProperty, value); }
        }

        public int Blue
        {
            get { return (int)GetValue(BlueProperty); }
            set { SetValue(BlueProperty, value); }
        }

        public int Green
        {
            get { return (int)GetValue(GreenProperty); }
            set { SetValue(GreenProperty, value); }
        }

        public int Alpha
        {
            get { return (int)GetValue(AlphaProperty); }
            set { SetValue(AlphaProperty, value); }
        }

        public bool DisplayGlyph
        {
            get { return (bool)GetValue(DisplayGlyphProperty); }
            set { SetValue(DisplayGlyphProperty, value); }
        }

        #endregion

        private static void Value_PropertyChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)