video-preview/RyzStudio/Windows/ThemedForms/TextBox/TKeyCodeTextBox.cs

using System.Text;
using System.Windows.Forms;
using UIResources = BookmarkManager.UIResource;

namespace RyzStudio.Windows.ThemedForms
{
    public class TKeyCodeTextBox : TButtonTextBox
    {
        public class Results
        {
            public bool IsCtrl { get; set; } = false;
            public bool IsAlt { get; set; } = false;
            public bool IsShift { get; set; } = false;
            public Keys Key { get; set; } = Keys.None;

            public int ModifierCode => ((this.IsAlt ? 1 : 0) + (this.IsCtrl ? 2 : 0) + (this.IsShift ? 4 : 0));

            public int KeyCode => (int)this.Key;

            public string DisplayText
            {
                get
                {
                    StringBuilder sb = new StringBuilder();

                    if (this.IsCtrl) sb.Append("Ctrl+");
                    if (this.IsShift) sb.Append("Shift+");
                    if (this.IsAlt) sb.Append("Alt+");

                    sb.Append(this.Key.ToString());

                    return sb.ToString();
                }
            }

            public void Clear()
            {
                this.IsCtrl = false;
                this.IsAlt = false;
                this.IsShift = false;
                this.Key = Keys.None;
            }
        }


        public Results KeyCodeResults { get; set; } = new Results();


        public TKeyCodeTextBox() : base()
        {
            this.NormalImage = UIResources.trash;
            this.HighlightImage = UIResources.trash2;
            this.Text = string.Empty;

            this.InnerTextBox.ReadOnly = true;
            this.InnerTextBox.PreviewKeyDown += textBox1_PreviewKeyDown;
        }

        private void textBox1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
        {
            if (e.KeyCode == Keys.ControlKey) return;
            if (e.KeyCode == Keys.ShiftKey) return;
            if (e.KeyCode == Keys.Menu) return;

            this.KeyCodeResults.IsCtrl = e.Control;
            this.KeyCodeResults.IsAlt = e.Alt;
            this.KeyCodeResults.IsShift = e.Shift;
            this.KeyCodeResults.Key = e.KeyCode;

            this.Text = this.KeyCodeResults.DisplayText;
        }

        protected override void imageBox1_MouseClick(object sender, MouseEventArgs e)
        {
            if (e.Button != MouseButtons.Left)
            {
                return;
            }

            this.KeyCodeResults.Clear();

            this.Text = this.KeyCodeResults.DisplayText;
        }

        public void UpdateKeyCode(bool isCtrl, bool isAlt, bool isShift, Keys key)
        {
            this.KeyCodeResults.IsCtrl = isCtrl;
            this.KeyCodeResults.IsAlt = isAlt;
            this.KeyCodeResults.IsShift = isShift;
            this.KeyCodeResults.Key = key;

            this.Text = this.KeyCodeResults.DisplayText;
        }

    }
}