public static ImageSource GetOrCreateImage(string imageName)
{
if (string.IsNullOrEmpty(imageName))
{
return(default(ImageSource));
}
if (!ImageSourceCache.ContainsKey(imageName))
{
ImageSourceCache[imageName] = ImageSource.FromFile(imageName);
}
return(ImageSourceCache[imageName]);
}
public static ImageSource GetImage(FileModel fileModel, IconSize iconSize)
{
if (fileModel.FullPath == FileSystemHelper.ComputerPath)
{
return(iconSize == IconSize.Small ? ComputerSmall : ComputerMedium);
}
if (fileModel.FullPath == FileSystemHelper.QuickAccessPath)
{
return(iconSize == IconSize.Small ? QuickAccessSmall : QuickAccessMedium);
}
string key = GetKey(fileModel, iconSize);
if (ImageSourceCache.TryGetValue(key, out ImageSource imageSource))
{
return(imageSource);
}
switch (iconSize)
{
case IconSize.Small:
imageSource = GetImage(fileModel.FullPath, 16);
break;
case IconSize.Medium:
imageSource = GetImage(fileModel.FullPath, 32);
break;
case IconSize.Large:
imageSource = GetImage(fileModel.FullPath, 128);
break;
case IconSize.ExtraLarge:
imageSource = GetImage(fileModel.FullPath, 256);
break;
}
if (imageSource != null)
{
ImageSourceCache.TryAdd(key, imageSource);
}
return(imageSource);
}
public static SKBitmapImageSource Load(string source, Aspect aspect, double width, double height)
{
// No image needed?
if (string.IsNullOrWhiteSpace(source) || width <= 0 || height <= 0)
{
return(null);
}
// Read the image
string key = GetKey(source);
SkiaSharp.Extended.Svg.SKSvg svg = LoadSVG(key);
CalculateBounds(true, svg, aspect, width, height, out SKMatrix drawMatrix, out SKSizeI pixelSize);
// Check the cache
if (ImageSourceCache.TryGetValue(key, out Tuple <SKSizeI, SKBitmapImageSource> cacheEntry))
{
if (cacheEntry.Item1.Width >= pixelSize.Width * (1 - CacheTolerance) &&
cacheEntry.Item1.Height >= pixelSize.Height * (1 - CacheTolerance))
{
// Already cached
return(cacheEntry.Item2);
}
else
{
// Dispose/remove current entry
cacheEntry.Item2.Bitmap?.Dispose();
ImageSourceCache.Remove(key);
}
}
// Convert to an SKBitmapImageSource
using (SKImage image = SKImage.FromPicture(svg.Picture, pixelSize, drawMatrix))
{
SKBitmapImageSource imageSource = new SKBitmapImageSource()
{
Bitmap = SKBitmap.FromImage(image)
};
ImageSourceCache.Add(key, Tuple.Create(pixelSize, imageSource));
return(imageSource);
}
}
public static ImageSource GetImage(FileModel fileModel, IconSize iconSize)
{
string path = Windows;
if (fileModel.IsDirectory)
{
if (fileModel.IsRoot)
{
switch (fileModel.FullPath)
{
case FileSystemHelper.QuickAccessPath:
path = KnownFolders.QuickAccess;
break;
case FileSystemHelper.ComputerPath:
path = KnownFolders.Computer;
break;
case FileSystemHelper.NetworkPath:
path = KnownFolders.Network;
break;
}
if (fileModel.ParentPath == FileSystemHelper.NetworkPath)
{
path = KnownFolders.Computer;
}
}
else if (FileSystemHelper.IsNetworkShare(fileModel.FullPath))
{
path = @"\\a\b";
}
else if (fileModel.IsDrive || fileModel.ParentPath.OrdinalEquals(UserProfile))
{
path = fileModel.FullPath;
}
}
else
{
if (fileModel.Extension.OrdinalEquals(".exe") ||
fileModel.Extension.OrdinalEquals(".ico") ||
fileModel.Extension.OrdinalEquals(".lnk") ||
fileModel.Extension.OrdinalEquals(".cur"))
{
path = fileModel.FullPath;
}
else
{
path = fileModel.Extension;
}
}
string key = String.Format(KeyFormat, path, iconSize);
if (ImageSourceCache.TryGetValue(key, out ImageSource imageSource))
{
return(imageSource);
}
using (ImageKeyLockProvider.Lock(key))
{
if (ImageSourceCache.TryGetValue(key, out imageSource))
{
return(imageSource);
}
imageSource = SafeNativeMethods.GetIcon(path, iconSize.ToSHIL());
if (imageSource != null)
{
ImageSourceCache.TryAdd(key, imageSource);
}
}
return(imageSource);
}
