/// <summary>
/// Gets the image from the thumbnail cache. If the image is not cached,
/// null will be returned.
/// </summary>
/// <param name="guid">The guid representing this item.</param>
/// <param name="adaptor">The adaptor of this item.</param>
/// <param name="key">The key of this item.</param>
/// <param name="thumbSize">Requested thumbnail size.</param>
/// <param name="useEmbeddedThumbnails">UseEmbeddedThumbnails property of the owner control.</param>
/// <param name="autoRotate">AutoRotate property of the owner control.</param>
/// <param name="useWIC">Whether to use WIC.</param>
/// <param name="clone">true to return a clone of the cached image; otherwise false.</param>
public Image GetImage(Guid guid, ImageListViewItemAdaptor adaptor, object key, Size thumbSize, UseEmbeddedThumbnails useEmbeddedThumbnails, bool autoRotate, bool useWIC, bool clone)
{
if (thumbCache.TryGetValue(guid, out CacheItem item) &&
item != null &&
item.Image != null &&
item.Size == thumbSize &&
item.UseEmbeddedThumbnails == useEmbeddedThumbnails &&
item.AutoRotate == autoRotate &&
item.UseWIC == useWIC)
{
return(clone ? (Image)item.Image.Clone() : item.Image);
}
else
{
string diskCacheKey = adaptor.GetUniqueIdentifier(key, thumbSize, useEmbeddedThumbnails, autoRotate, useWIC);
// Check the disk cache
using (Stream stream = DiskCache.Read(diskCacheKey))
{
if (stream.Length > 0)
{
return(new Bitmap(stream));
}
}
}
return(null);
}
/// <summary>
/// Adds a virtual item to the cache.
/// </summary>
/// <param name="guid">The guid representing this item.</param>
/// <param name="adaptor">The adaptor for this item.</param>
/// <param name="key">The key of this item.</param>
/// <param name="thumbSize">Requested thumbnail size.</param>
/// <param name="thumb">Thumbnail image to add to cache.</param>
/// <param name="useEmbeddedThumbnails">UseEmbeddedThumbnails property of the owner control.</param>
/// <param name="autoRotate">AutoRotate property of the owner control.</param>
/// <param name="useWIC">Whether to use WIC.</param>
public void Add(Guid guid, ImageListViewItemAdaptor adaptor, object key, Size thumbSize, Image thumb, UseEmbeddedThumbnails useEmbeddedThumbnails, bool autoRotate, bool useWIC)
{
// Already cached?
if (thumbCache.TryGetValue(guid, out CacheItem item))
{
if (item.Size == thumbSize && item.UseEmbeddedThumbnails == useEmbeddedThumbnails)
{
return;
}
}
// Resize
thumb = ThumbnailExtractor.FromImage(thumb, thumbSize, useEmbeddedThumbnails, autoRotate, useWIC);
// Add to cache
thumbCache.Add(guid, new CacheItem(guid, thumbSize, thumb, CacheState.Cached, useEmbeddedThumbnails, autoRotate, useWIC));
// Add to disk cache
using (MemoryStream stream = new MemoryStream())
{
string diskCacheKey = adaptor.GetUniqueIdentifier(key, thumbSize, useEmbeddedThumbnails, autoRotate, useWIC);
thumb.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
DiskCache.Write(diskCacheKey, stream);
}
// Raise the cache events
if (mImageListView != null)
{
mImageListView.OnThumbnailCachedInternal(guid, thumb, thumbSize, true);
mImageListView.Refresh();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="CacheRequest"/> class.
/// </summary>
/// <param name="guid">The guid of the item.</param>
/// <param name="adaptor">The adaptor of this item.</param>
/// <param name="virtualItemKey">The virtual item key of this item.</param>
/// <param name="useWIC">Whether to use the Windows Imaging Component.</param>
public CacheRequest(Guid guid, ImageListViewItemAdaptor adaptor, object virtualItemKey, bool useWIC)
{
Guid = guid;
Adaptor = adaptor;
VirtualItemKey = virtualItemKey;
UseWIC = useWIC;
}
/// <summary>
/// Adds a virtual item to the <see cref="ImageListViewItemCollection"/>.
/// </summary>
/// <param name="key">The key identifying the item.</param>
/// <param name="text">Text of the item.</param>
/// <param name="initialThumbnail">The initial thumbnail image for the item.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
public void Add(object key, string text, Image initialThumbnail, ImageListViewItemAdaptor adaptor)
{
ImageListViewItem item = new ImageListViewItem(key, text)
{
clonedThumbnail = initialThumbnail
};
Add(item, adaptor);
}
/// <summary>
/// Initializes a new instance of the <see cref="CacheRequest"/> class
/// for use with a virtual item.
/// </summary>
/// <param name="guid">The guid of the ImageListViewItem.</param>
/// <param name="adaptor">The adaptor of this item.</param>
/// <param name="key">The public key for the virtual item.</param>
/// <param name="size">The size of the requested thumbnail.</param>
/// <param name="useEmbeddedThumbnails">UseEmbeddedThumbnails property of the owner control.</param>
/// <param name="autoRotate">AutoRotate property of the owner control.</param>
/// <param name="useWIC">Whether to use WIC.</param>
/// <param name="requestType">Type of this request.</param>
public CacheRequest(Guid guid, ImageListViewItemAdaptor adaptor, object key, Size size, UseEmbeddedThumbnails useEmbeddedThumbnails, bool autoRotate, bool useWIC, RequestType requestType)
{
Guid = guid;
VirtualItemKey = key;
Adaptor = adaptor;
Size = size;
UseEmbeddedThumbnails = useEmbeddedThumbnails;
AutoRotate = autoRotate;
UseWIC = useWIC;
RequestType = requestType;
}
/// <summary>
/// Adds a range of items to the <see cref="ImageListViewItemCollection"/>.
/// </summary>
/// <param name="items">An array of <see cref="ImageListViewItem"/>
/// to add to the <see cref="ImageListViewItemCollection"/>.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
public void AddRange(ImageListViewItem[] items, ImageListViewItemAdaptor adaptor)
{
mImageListView?.SuspendPaint();
foreach (ImageListViewItem item in items)
{
Add(item, adaptor);
}
mImageListView?.ResumePaint();
}
/// <summary>
/// Adds the virtual item image to the renderer cache queue.
/// </summary>
/// <param name="guid">The guid representing this item.</param>
/// <param name="adaptor">The adaptor of this item.</param>
/// <param name="key">The key of this item.</param>
/// <param name="thumbSize">Requested thumbnail size.</param>
/// <param name="useEmbeddedThumbnails">UseEmbeddedThumbnails property of the owner control.</param>
/// <param name="autoRotate">AutoRotate property of the owner control.</param>
/// <param name="useWIC">Whether to use WIC.</param>
public void AddToRendererCache(Guid guid, ImageListViewItemAdaptor adaptor, object key, Size thumbSize, UseEmbeddedThumbnails useEmbeddedThumbnails, bool autoRotate, bool useWIC)
{
// Already cached?
if (rendererItem != null && rendererItem.Guid == guid && rendererItem.Image != null && rendererItem.Size == thumbSize && rendererItem.UseEmbeddedThumbnails == useEmbeddedThumbnails && rendererItem.AutoRotate == autoRotate && rendererItem.UseWIC == useWIC)
{
return;
}
// Add to cache queue
RunWorker(new CacheRequest(guid, adaptor, key, thumbSize, useEmbeddedThumbnails, autoRotate, useWIC, RequestType.Renderer), 1);
}
/// <summary>
/// Inserts an item to the <see cref="ImageListViewItemCollection"/> at the specified index.
/// </summary>
/// <param name="index">The zero-based index at which <paramref name="item"/> should be inserted.</param>
/// <param name="item">The <see cref="ImageListViewItem"/> to
/// insert into the <see cref="ImageListViewItemCollection"/>.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
public void Insert(int index, ImageListViewItem item, ImageListViewItemAdaptor adaptor)
{
InsertInternal(index, item, adaptor);
if (mImageListView != null)
{
if (item.Selected)
{
mImageListView.OnSelectionChangedInternal();
}
mImageListView.Refresh();
}
}
/// <summary>
/// Adds an item to the <see cref="ImageListViewItemCollection"/>.
/// </summary>
/// <param name="item">The <see cref="ImageListViewItem"/> to add to the <see cref="ImageListViewItemCollection"/>.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
public void Add(ImageListViewItem item, ImageListViewItemAdaptor adaptor)
{
AddInternal(item, adaptor);
if (mImageListView != null)
{
if (item.Selected)
{
mImageListView.OnSelectionChangedInternal();
}
mImageListView.Refresh();
}
}
/// <summary>
/// Adds a virtual item to the cache queue.
/// </summary>
/// <param name="guid">The guid representing this item.</param>
/// <param name="adaptor">he adaptor for this item.</param>
/// <param name="key">The key of this item.</param>
/// <param name="thumbSize">Requested thumbnail size.</param>
/// <param name="useEmbeddedThumbnails">UseEmbeddedThumbnails property of the owner control.</param>
/// <param name="autoRotate">AutoRotate property of the owner control.</param>
/// <param name="useWIC">Whether to use WIC.</param>
public void Add(Guid guid, ImageListViewItemAdaptor adaptor, object key, Size thumbSize, UseEmbeddedThumbnails useEmbeddedThumbnails, bool autoRotate, bool useWIC, int priority = 0)
{
// Already cached?
if (thumbCache.TryGetValue(guid, out CacheItem item))
{
if (item.Size == thumbSize && item.UseEmbeddedThumbnails == useEmbeddedThumbnails)
{
return;
}
}
// Add to cache queue
RunWorker(new CacheRequest(guid, adaptor, key, thumbSize, useEmbeddedThumbnails, autoRotate, useWIC, RequestType.Thumbnail), priority);
}
/// <summary>
/// Adds the given item without raising a selection changed event.
/// </summary>
/// <param name="item">The <see cref="ImageListViewItem"/> to add.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
/// <returns>true if the item was added; otherwise false.</returns>
internal bool AddInternal(ImageListViewItem item, ImageListViewItemAdaptor adaptor)
{
return(InsertInternal(-1, item, adaptor));
}
/// <summary>
/// Adds the item to the cache queue.
/// </summary>
/// <param name="guid">Item guid.</param>
/// <param name="adaptor">The adaptor for this item.</param>
/// <param name="virtualItemKey">The virtual item key.</param>
/// <param name="useWIC">Whether to use the Windows Imaging Component.</param>
public void Add(Guid guid, ImageListViewItemAdaptor adaptor, object virtualItemKey, bool useWIC)
{
// Add to cache queue
RunWorker(new CacheRequest(guid, adaptor, virtualItemKey, useWIC));
}
/// <summary>
/// Adds a virtual item to the <see cref="ImageListViewItemCollection"/>.
/// </summary>
/// <param name="key">The key identifying the item.</param>
/// <param name="text">Text of the item.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
public void Add(object key, string text, ImageListViewItemAdaptor adaptor)
{
Add(key, text, null, adaptor);
}
/// <summary>
/// Inserts a virtual item to the <see cref="ImageListViewItemCollection"/> at the specified index.
/// </summary>
/// <param name="index">The zero-based index at which the new item should be inserted.</param>
/// <param name="key">The key identifying the item.</param>
/// <param name="text">Text of the item.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
public void Insert(int index, object key, string text, ImageListViewItemAdaptor adaptor)
{
Insert(index, key, text, null, adaptor);
}
/// <summary>
/// Inserts a virtual item to the <see cref="ImageListViewItemCollection"/> at the specified index.
/// </summary>
/// <param name="index">The zero-based index at which the new item should be inserted.</param>
/// <param name="key">The key identifying the item.</param>
/// <param name="text">Text of the item.</param>
/// <param name="initialThumbnail">The initial thumbnail image for the item.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
public void Insert(int index, object key, string text, Image initialThumbnail, ImageListViewItemAdaptor adaptor)
{
ImageListViewItem item = new ImageListViewItem(key, text)
{
clonedThumbnail = initialThumbnail
};
Insert(index, item, adaptor);
}
/// <summary>
/// Adds an item to the <see cref="ImageListViewItemCollection"/>.
/// </summary>
/// <param name="item">The <see cref="ImageListViewItem"/> to add to the <see cref="ImageListViewItemCollection"/>.</param>
/// <param name="initialThumbnail">The initial thumbnail image for the item.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
public void Add(ImageListViewItem item, Image initialThumbnail, ImageListViewItemAdaptor adaptor)
{
item.clonedThumbnail = initialThumbnail;
Add(item, adaptor);
}
/// <summary>
/// Inserts the given item without raising a selection changed event.
/// </summary>
/// <param name="index">Insertion index. If index is -1 the item is added to the end of the list.</param>
/// <param name="item">The <see cref="ImageListViewItem"/> to add.</param>
/// <param name="adaptor">The adaptor associated with this item.</param>
/// <returns>true if the item was added; otherwise false.</returns>
internal bool InsertInternal(int index, ImageListViewItem item, ImageListViewItemAdaptor adaptor)
{
if (mImageListView == null)
{
return(false);
}
// Check if the file already exists
if (!string.IsNullOrEmpty(item.FileName) && !mImageListView.AllowDuplicateFileNames)
{
if (mItems.Exists(a => string.Compare(a.FileName, item.FileName, StringComparison.OrdinalIgnoreCase) == 0))
{
return(false);
}
}
item.owner = this;
item.mAdaptor = adaptor;
if (index == -1)
{
item.mIndex = mItems.Count;
mItems.Add(item);
}
else
{
item.mIndex = index;
for (int i = index; i < mItems.Count; i++)
{
mItems[i].mIndex++;
}
mItems.Insert(index, item);
}
lookUp.Add(item.Guid, item);
collectionModified = true;
item.mImageListView = mImageListView;
// Create sub item texts for custom columns
foreach (ImageListViewColumnHeader header in mImageListView.Columns)
{
if (header.Type == ColumnType.Custom)
{
item.AddSubItemText(header.Guid);
}
}
// Add current thumbnail to cache
if (item.clonedThumbnail != null)
{
mImageListView.thumbnailCache.Add(item.Guid, item.Adaptor, item.VirtualItemKey, mImageListView.ThumbnailSize,
item.clonedThumbnail, mImageListView.UseEmbeddedThumbnails, mImageListView.AutoRotateThumbnails,
(mImageListView.UseWIC == UseWIC.Auto || mImageListView.UseWIC == UseWIC.ThumbnailsOnly));
item.clonedThumbnail = null;
}
// Add to thumbnail cache
if (mImageListView.CacheMode == CacheMode.Continuous)
{
mImageListView.thumbnailCache.Add(item.Guid, item.Adaptor, item.VirtualItemKey,
mImageListView.ThumbnailSize, mImageListView.UseEmbeddedThumbnails, mImageListView.AutoRotateThumbnails,
(mImageListView.UseWIC == UseWIC.Auto || mImageListView.UseWIC == UseWIC.ThumbnailsOnly));
}
// Add to details cache
mImageListView.metadataCache.Add(item.Guid, item.Adaptor, item.VirtualItemKey,
(mImageListView.UseWIC == UseWIC.Auto || mImageListView.UseWIC == UseWIC.DetailsOnly));
// Add to shell info cache
string extension = item.extension;
if (!string.IsNullOrEmpty(extension))
{
CacheState state = mImageListView.shellInfoCache.GetCacheState(extension);
if (state == CacheState.Error && mImageListView.RetryOnError == true)
{
mImageListView.shellInfoCache.Remove(extension);
mImageListView.shellInfoCache.Add(extension);
}
else if (state == CacheState.Unknown)
{
mImageListView.shellInfoCache.Add(extension);
}
}
// Update groups
if (mImageListView.GroupsVisible)
{
AddRemoveGroupItem(item.Index, true);
}
// Raise the add event
mImageListView.OnItemCollectionChanged(new ItemCollectionChangedEventArgs(CollectionChangeAction.Add, item));
return(true);
}
