DisplayMagician/HeliosPlus/UIForms/ShortcutAdaptor.cs

using Manina.Windows.Forms;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Net;
using System.Text;

namespace HeliosPlus.UIForms
{

    #region Shortcut Adaptor
    /// <summary>
    /// A custom item adaptor for ImageListView that reads from a Profile.
    /// </summary>
    class ShortcutAdaptor : ImageListView.ImageListViewItemAdaptor
    {

        private bool disposed;

        /// <summary>
        /// Initializes a new instance of the <see cref="ShortcutAdaptor"/> class.
        /// </summary>
        public ShortcutAdaptor()
        {
            disposed = false;
        }

        /// <summary>
        /// Returns the thumbnail image for the given item.
        /// </summary>
        /// <param name="key">Item key.</param>
        /// <param name="size">Requested image size.</param>
        /// <param name="useEmbeddedThumbnails">Embedded thumbnail usage.</param>
        /// <param name="useExifOrientation">true to automatically rotate images based on Exif orientation; otherwise false.</param>
        /// <returns>The thumbnail image from the given item or null if an error occurs.</returns>
        public override Image GetThumbnail(object key, Size size, UseEmbeddedThumbnails useEmbeddedThumbnails, bool useExifOrientation)
        {
            if (disposed)
                return null;

            try
            {
                ShortcutItem shortcut = (ShortcutItem) key;

                if (shortcut == null)
                {
                    return null;
                }

                Image.GetThumbnailImageAbort myCallback = new Image.GetThumbnailImageAbort(() => { return false; });
                //return shortcut.ShortcutBitmap.GetThumbnailImage(size.Width, size.Height, myCallback, IntPtr.Zero);
                //return Manina.Windows.Forms.Instance.GetThumbnail(shortcut.ShortcutBitmap, size, useEmbeddedThumbnails, useExifOrientation);
                return shortcut.ShortcutBitmap;
            }
            catch (Exception ex)
            {
                Console.WriteLine($"ShortcutAdapter/GetThumbnail exception: {ex.Message}: {ex.StackTrace} - {ex.InnerException}");

                // If we have a problem with converting the submitted key to a profile
                // Then we return null
                return null;
            }


            return null;
        }

        /// <summary>
        /// Returns a unique identifier for this thumbnail to be used in persistent
        /// caching.
        /// </summary>
        /// <param name="key">Item key.</param>
        /// <param name="size">Requested image size.</param>
        /// <param name="useEmbeddedThumbnails">Embedded thumbnail usage.</param>
        /// <param name="useExifOrientation">true to automatically rotate images based on Exif orientation; otherwise false.</param>
        /// <returns>A unique identifier string for the thumnail.</returns>
        public override string GetUniqueIdentifier(object key, Size size, UseEmbeddedThumbnails useEmbeddedThumbnails, bool useExifOrientation)
        {
            if (disposed)
                return null;

            try
            {
                ShortcutItem shortcut = (ShortcutItem) key;
                //return shortcut.Name;


                StringBuilder sb = new StringBuilder();
                sb.Append(shortcut.ToString());// Filename
                sb.Append(':');
                sb.Append(size.Width); // Thumbnail size
                sb.Append(',');
                sb.Append(size.Height);
                sb.Append(':');
                sb.Append(useEmbeddedThumbnails);
                sb.Append(':');
                sb.Append(useExifOrientation);
                return sb.ToString();
            }
            catch (Exception ex)
            {
                Console.WriteLine($"ShortcutAdapter/GetUniqueIdentifier exception: {ex.Message}: {ex.StackTrace} - {ex.InnerException}");
                // If we have a problem with converting the submitted key to a Shortcut
                // Then we return null
                return null;
            }
        }

        /// <summary>
        /// Returns the path to the source image for use in drag operations.
        /// </summary>
        /// <param name="key">Item key.</param>
        /// <returns>The path to the source image.</returns>
        public override string GetSourceImage(object key)
        {
            if (disposed)
                return null;

            try
            {
                string shortcutName = (string)key;
                return shortcutName;
            }
            catch (Exception ex)
            {
                Console.WriteLine($"ShortcutAdaptor/GetSourceImage exception: {ex.Message}: {ex.StackTrace} - {ex.InnerException}");

                // If we have a problem with converting the submitted key to a profile
                // Then we return null
                return null;
            }
        }

        /// <summary>
        /// Returns the details for the given item.
        /// </summary>
        /// <param name="key">Item key.</param>
        /// <returns>An array of tuples containing item details or null if an error occurs.</returns>
        public override Utility.Tuple<ColumnType, string, object>[] GetDetails(object key)
        {
            if (disposed)
                return null;

            List<Utility.Tuple<ColumnType, string, object>> details = new List<Utility.Tuple<ColumnType, string, object>>();

            try
            {
                ShortcutItem shortcut = (ShortcutItem) key;

                // Get file info
                if (shortcut.ShortcutBitmap is Bitmap)
                {
                    // Have to do some gymnastics to get rid of the 
                    // System.Drawing.Image exception created while accessing the Size
                    bool gotSize = false;
                    Size mySize = new Size(256,256);
                    while (!gotSize)
                    {
                        try
                        {
                            mySize = shortcut.ShortcutBitmap.Size;
                            gotSize = true;
                        }
                        catch (Exception ex)
                        {
                            // catch the System.Drawing.Image exception created while accessing the Size
                        }
                    }

                    // Have to do some gymnastics to get rid of the 
                    // System.Drawing.Image exception created while accessing the SizeF
                    bool gotSizeF = false;
                    SizeF mySizeF = new SizeF(256, 256);
                    while (!gotSizeF)
                    {
                        try
                        {
                            mySizeF = shortcut.ShortcutBitmap.PhysicalDimension;
                            gotSizeF = true;
                        }
                        catch (Exception ex)
                        {
                            // catch the System.Drawing.Image exception created while accessing the Size
                        }
                    }

                    string name = shortcut.Name;
                    string filepath = Path.GetDirectoryName(shortcut.SavedShortcutIconCacheFilename);
                    string filename = Path.GetFileName(shortcut.SavedShortcutIconCacheFilename);
                    DateTime now = DateTime.Now;
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.DateCreated, string.Empty, now));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.DateAccessed, string.Empty, now));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.DateModified, string.Empty, now));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.FileSize, string.Empty, (long)0));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.FilePath, string.Empty, filepath ?? ""));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.FolderName, string.Empty, filepath ?? ""));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.Dimensions, string.Empty, mySize));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.Resolution, string.Empty, mySizeF));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.ImageDescription, string.Empty, name ?? ""));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.EquipmentModel, string.Empty, ""));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.DateTaken, string.Empty, now));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.Artist, string.Empty, ""));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.Copyright, string.Empty, ""));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.ExposureTime, string.Empty, (float)0));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.FNumber, string.Empty, (float)0));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.ISOSpeed, string.Empty, (ushort)0));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.UserComment, string.Empty, ""));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.Rating, string.Empty, (ushort)0));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.Software, string.Empty, ""));
                    details.Add(new Utility.Tuple<ColumnType, string, object>(ColumnType.FocalLength, string.Empty, (float)0));
                }
            
                return details.ToArray();
            }
            catch (Exception ex)
            {
                Console.WriteLine($"ShortcutAdapter/Utility.Tuple exception: {ex.Message}: {ex.StackTrace} - {ex.InnerException}");
                // If we have a problem with converting the submitted key to a profile
                // Then we return null
                return null;
            }
        }

        public override void Dispose()
        {
            disposed = true;
        }
    }
    #endregion
    
}