kev/Drawer/UCDraw/SigmaDrawerStyle/PropertyEditorWellFontEx.cs

using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Design;
using System.Windows.Forms;
using System.Windows.Forms.Design;

namespace GeoSigma.SigmaDrawerStyle
{
    /// <summary>
    /// 字体编辑器
    /// </summary>
    public class PropertyEditorWellFontEx : UITypeEditor
    {
        /// <inheritdoc/>
        public override UITypeEditorEditStyle GetEditStyle(ITypeDescriptorContext context)
        {
            return UITypeEditorEditStyle.Modal;
        }

        /// <inheritdoc/>
        public override void PaintValue(PaintValueEventArgs e)
        {
            if (e.Value is WellFontEx font)
            {
                using (var brush = new SolidBrush(font.FontColor))
                {
                    var rect = new Rectangle(e.Bounds.X, e.Bounds.Y, 20, e.Bounds.Height - 1);
                    e.Graphics.FillRectangle(brush, rect);
                    e.Graphics.DrawRectangle(Pens.Black, rect);
                }
            }
        }

        /// <inheritdoc/>
        public override bool GetPaintValueSupported(ITypeDescriptorContext context)
        {
            return true;
        }

        /// <inheritdoc/>
        public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
        {
            if (!(value is WellFontEx fontEx))
            {
                return value;
            }

            IWindowsFormsEditorService edSvc = provider?.GetService(typeof(IWindowsFormsEditorService)) as IWindowsFormsEditorService;
            if (edSvc == null)
            {
                return value;
            }

            using (FontDialog dlg = new FontDialog())
            {
                // 设置初始字体
                dlg.Font = WellFontEx.ToFont(fontEx);

                dlg.Color = fontEx.FontColor;
                dlg.ShowColor = true;

                if (dlg.ShowDialog() == DialogResult.OK)
                {
                    var result = WellFontEx.FromFont(dlg.Font);
                    result.FontColor = dlg.Color;
                    result.Text = fontEx.Text;
                    return result;
                }
            }

            return value;
        }
    }
}