kev/Drawer/UCDraw/SigmaDrawerStyle/PropertyEditorSymbol.cs

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Design;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Windows.Forms.Design;
using GeoSigmaDrawLib;
using SymbolLibInterface;

namespace GeoSigma.SigmaDrawerStyle
{
    //[System.Security.Permissions.PermissionSet(System.Security.Permissions.SecurityAction.Demand, Name = "FullTrust")]
    public class PropertyEditorSymbol : UITypeEditor
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="PropertyEditorSymbol"/> class.
        /// </summary>
        public PropertyEditorSymbol()
        {
        }
        // Indicates whether the UITypeEditor provides a form-based (modal) dialog,
        // drop down dialog, or no UI outside of the properties window.
        public override UITypeEditorEditStyle GetEditStyle(System.ComponentModel.ITypeDescriptorContext context)
        {
            return UITypeEditorEditStyle.Modal;
        }

        // Displays the UI for value selection.
        public override object EditValue(System.ComponentModel.ITypeDescriptorContext context, System.IServiceProvider provider, object value)
        {
            // Uses the IWindowsFormsEditorService to display a
            // drop-down UI in the Properties window.
            IWindowsFormsEditorService edSvc = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
            if (edSvc != null)
            {
                // Display an angle selection control and retrieve the value.
                SymbolNameWrapper wrapper = value as SymbolNameWrapper;
                GeoSigmaXY geo = wrapper.DrawerGeo as GeoSigmaXY;
                //SymbolLibManager.FrmSymbolSelect frm = new SymbolLibManager.FrmSymbolSelect(geo);
                string strLibraryPath = string.Empty;
                geo.GetLibraryPath(ref strLibraryPath);
                Form frmSymbol = SymbolHelp.CreateSymbolSelectForm(geo, strLibraryPath, AcceptSymbolName);
                System.Windows.Forms.DialogResult result = edSvc.ShowDialog(frmSymbol);
                if (result == System.Windows.Forms.DialogResult.OK)
                {
                    // Return the value in the data format.
                    SymbolNameWrapper wrapperNew = new SymbolNameWrapper();
                    wrapperNew.DrawerGeo = geo;
                    //wrapperNew.SymbolName = frm.SelectedSymbolName;
                    wrapperNew.SymbolName = selectedSymbol;
                    //context.PropertyDescriptor.SetValue(context.Instance, wrapperNew);
                    //// Notify container that value has been changed
                    //context.OnComponentChanged();
                    return wrapperNew;
                }
                else
                {
                    return value;
                }
            }
            return value;
        }
        string selectedSymbol = string.Empty;
        private string AcceptSymbolName(string symbolName)
        {
            return selectedSymbol = symbolName;
        }
        // Draws a representation of the property's value.
        public override void PaintValue(PaintValueEventArgs e)
        {
            if (!(e.Value is SymbolNameWrapper))
            {
                base.PaintValue(e);
                return;
            }
            SymbolNameWrapper symbolWrapper = e.Value as SymbolNameWrapper;
            if (symbolWrapper == null || string.IsNullOrEmpty(symbolWrapper.SymbolName) || symbolWrapper.DrawerGeo == null)
            {
                base.PaintValue(e);
                return;
            }
            //// remove the lines (you cannot draw on these lines anymore)
            // e.Graphics.ExcludeClip(
            //    new Rectangle(e.Bounds.X, e.Bounds.Y, e.Bounds.Width, 1));
            // e.Graphics.ExcludeClip(
            //    new Rectangle(e.Bounds.X, e.Bounds.Y, 1, e.Bounds.Height));
            // e.Graphics.ExcludeClip(
            //    new Rectangle(e.Bounds.Width, e.Bounds.Y, 1, e.Bounds.Height));
            // e.Graphics.ExcludeClip(
            //    new Rectangle(e.Bounds.X, e.Bounds.Height, e.Bounds.Width, 1));
            int nWidth = Math.Min(e.Bounds.Width, e.Bounds.Height);
            int nX = e.Bounds.X + ((e.Bounds.Width - nWidth) / 2);
            int nY = e.Bounds.Y + ((e.Bounds.Height - nWidth) / 2);

            string strName = symbolWrapper.SymbolName;

            Bitmap bmp = new Bitmap(nWidth, nWidth);
            Graphics gBmp = Graphics.FromImage(bmp);
            IntPtr pBmpDC = gBmp.GetHdc();
            IntPtr pXy = IntPtr.Zero;
            ((GeoSigmaXY)(symbolWrapper.DrawerGeo)).DrawerDrawSymbolFill(strName, pBmpDC, nWidth, nWidth, ref pXy);
            gBmp.ReleaseHdc();
            e.Graphics.DrawImage(bmp, nX, nY, nWidth, nWidth);
            bmp.Dispose();
        }
        // Indicates whether the UITypeEditor supports painting a
        // representation of a property's value.
        public override bool GetPaintValueSupported(System.ComponentModel.ITypeDescriptorContext context)
        {
            return true;
        }
    }
}