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[PTRun]Asynchronously load image and thumbnails
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@jaimecbernardo
jaimecbernardo committed Mar 10, 2023
1 parent 6537820 commit 8e0eca5
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Showing 2 changed files with 113 additions and 82 deletions.
56 changes: 43 additions & 13 deletions src/modules/launcher/PowerLauncher/ViewModel/ResultViewModel.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -5,6 +5,7 @@
using System;
using System.Collections.ObjectModel;
using System.Globalization;
using System.Threading.Tasks;
using System.Windows.Input;
using System.Windows.Media;
using PowerLauncher.Helper;
Expand Down Expand Up @@ -38,6 +39,9 @@ public enum ActivationType

private bool _areContextButtonsActive;

private ImageSource _image;
private volatile bool _imageLoaded;

public bool AreContextButtonsActive
{
get => _areContextButtonsActive;
Expand Down Expand Up @@ -191,25 +195,51 @@ public ImageSource Image
{
get
{
var imagePath = Result.IcoPath;
if (string.IsNullOrEmpty(imagePath) && Result.Icon != null)
if (!_imageLoaded)
{
try
{
return Result.Icon();
}
catch (Exception e)
{
Log.Exception($"IcoPath is empty and exception when calling Icon() for result <{Result.Title}> of plugin <{Result.PluginDirectory}>", e, GetType());
imagePath = ImageLoader.ErrorIconPath;
}
_imageLoaded = true;
_ = LoadImageAsync();
}

// will get here either when icoPath has value\icon delegate is null\when had exception in delegate
return ImageLoader.Load(imagePath, _settings.GenerateThumbnailsFromFiles);
return _image;
}

private set
{
_image = value;
OnPropertyChanged(nameof(Image));
}
}

private async Task<ImageSource> LoadImageInternalAsync(string imagePath, Result.IconDelegate icon, bool loadFullImage)
{
if (string.IsNullOrEmpty(imagePath) && icon != null)
{
try
{
var image = icon();
return image;
}
catch (Exception e)
{
Log.Exception(
$"IcoPath is empty and exception when calling Icon() for result <{Result.Title}> of plugin <{Result.PluginDirectory}>",
e,
System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
imagePath = ImageLoader.ErrorIconPath;
}
}

return await ImageLoader.LoadAsync(imagePath, _settings.GenerateThumbnailsFromFiles, loadFullImage).ConfigureAwait(false);
}

private async Task LoadImageAsync()
{
var imagePath = Result.IcoPath;
var iconDelegate = Result.Icon;
Image = await LoadImageInternalAsync(imagePath, iconDelegate, false).ConfigureAwait(false);
}

// Returns false if we've already reached the last item.
public bool SelectNextContextButton()
{
Expand Down
139 changes: 70 additions & 69 deletions src/modules/launcher/Wox.Infrastructure/Image/ImageLoader.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -64,12 +64,12 @@ public static void Initialize(Theme theme)
UpdateIconPath(theme);
Task.Run(() =>
{
Stopwatch.Normal("ImageLoader.Initialize - Preload images cost", () =>
Stopwatch.Normal("ImageLoader.Initialize - Preload images cost", async () =>
{
ImageCache.Usage.AsParallel().ForAll(x =>
foreach (var (path, _) in ImageCache.Usage)
{
Load(x.Key, true);
});
await LoadAsync(path, true);
}
});
Log.Info($"Number of preload images is <{ImageCache.Usage.Count}>, Images Number: {ImageCache.CacheSize()}, Unique Items {ImageCache.UniqueImagesInCache()}", MethodBase.GetCurrentMethod().DeclaringType);
Expand Down Expand Up @@ -120,10 +120,9 @@ private enum ImageType
Cache,
}

private static ImageResult LoadInternal(string path, bool generateThumbnailsFromFiles, bool loadFullImage = false)
private static async ValueTask<ImageResult> LoadInternalAsync(string path, bool generateThumbnailsFromFiles, bool loadFullImage = false)
{
ImageSource image;
ImageType type = ImageType.Error;
ImageResult imageResult;
try
{
if (string.IsNullOrEmpty(path))
Expand All @@ -144,92 +143,94 @@ private static ImageResult LoadInternal(string path, bool generateThumbnailsFrom
return new ImageResult(imageSource, ImageType.Data);
}

if (!Path.IsPathRooted(path))
{
path = Path.Combine(Constant.ProgramDirectory, "Images", Path.GetFileName(path));
}
imageResult = await Task.Run(() => GetThumbnailResult(ref path, generateThumbnailsFromFiles, loadFullImage));
}
catch (System.Exception e)
{
Log.Exception($"Failed to get thumbnail for {path}", e, MethodBase.GetCurrentMethod().DeclaringType);
ImageSource image = ImageCache[ErrorIconPath];
ImageCache[path] = image;
imageResult = new ImageResult(image, ImageType.Error);
}

if (Directory.Exists(path))
{
/* Directories can also have thumbnails instead of shell icons.
* Generating thumbnails for a bunch of folders while scrolling through
* results from Everything makes a big impact on performance and
* Wox responsibility.
* - Solution: just load the icon
*/
type = ImageType.Folder;
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.IconOnly);
}
else if (File.Exists(path))
return imageResult;
}

private static ImageResult GetThumbnailResult(ref string path, bool generateThumbnailsFromFiles, bool loadFullImage = false)
{
ImageSource image;
ImageType type = ImageType.Error;

if (!Path.IsPathRooted(path))
{
path = Path.Combine(Constant.ProgramDirectory, "Images", Path.GetFileName(path));
}

if (Directory.Exists(path))
{
/* Directories can also have thumbnails instead of shell icons.
* Generating thumbnails for a bunch of folders while scrolling through
* results from Everything makes a big impact on performance and
* Wox responsibility.
* - Solution: just load the icon
*/
type = ImageType.Folder;
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.IconOnly);
}
else if (File.Exists(path))
{
// Using InvariantCulture since this is internal
var extension = Path.GetExtension(path).ToLower(CultureInfo.InvariantCulture);
if (ImageExtensions.Contains(extension))
{
// Using InvariantCulture since this is internal
var extension = Path.GetExtension(path).ToLower(CultureInfo.InvariantCulture);
if (ImageExtensions.Contains(extension))
type = ImageType.ImageFile;
if (loadFullImage)
{
image = LoadFullImage(path);
}
else
{
type = ImageType.ImageFile;
if (loadFullImage)
// PowerToys Run internal images are png, so we make this exception
if (extension == ".png" || generateThumbnailsFromFiles)
{
image = LoadFullImage(path);
/* Although the documentation for GetImage on MSDN indicates that
* if a thumbnail is available it will return one, this has proved to not
* be the case in many situations while testing.
* - Solution: explicitly pass the ThumbnailOnly flag
*/
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.ThumbnailOnly);
}
else
{
// PowerToys Run internal images are png, so we make this exception
if (extension == ".png" || generateThumbnailsFromFiles)
{
/* Although the documentation for GetImage on MSDN indicates that
* if a thumbnail is available it will return one, this has proved to not
* be the case in many situations while testing.
* - Solution: explicitly pass the ThumbnailOnly flag
*/
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.ThumbnailOnly);
}
else
{
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.IconOnly);
}
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.IconOnly);
}
}
else if (!generateThumbnailsFromFiles || (extension == ".pdf" && WindowsThumbnailProvider.DoesPdfUseAcrobatAsProvider()))
{
// The PDF thumbnail provider from Adobe Reader and Acrobat Pro lets crash PT Run with an Dispatcher exception. (https://github.com/microsoft/PowerToys/issues/18166)
// To not run into the crash, we only request the icon of PDF files if the PDF thumbnail handler is set to Adobe Reader/Acrobat Pro.
// Also don't get thumbnail if the GenerateThumbnailsFromFiles option is off.
type = ImageType.File;
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.IconOnly);
}
else
{
type = ImageType.File;
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.RESIZETOFIT);
}
}
else
{
image = ImageCache[ErrorIconPath];
path = ErrorIconPath;
}

if (type != ImageType.Error)
{
image.Freeze();
type = ImageType.File;
image = WindowsThumbnailProvider.GetThumbnail(path, Constant.ThumbnailSize, Constant.ThumbnailSize, ThumbnailOptions.RESIZETOFIT);
}
}
catch (System.Exception e)
else
{
Log.Exception($"Failed to get thumbnail for {path}", e, MethodBase.GetCurrentMethod().DeclaringType);
type = ImageType.Error;
image = ImageCache[ErrorIconPath];
ImageCache[path] = image;
path = ErrorIconPath;
}

if (type != ImageType.Error)
{
image.Freeze();
}

return new ImageResult(image, type);
}

private const bool _enableImageHash = true;

public static ImageSource Load(string path, bool generateThumbnailsFromFiles, bool loadFullImage = false)
public static async ValueTask<ImageSource> LoadAsync(string path, bool generateThumbnailsFromFiles, bool loadFullImage = false)
{
var imageResult = LoadInternal(path, generateThumbnailsFromFiles, loadFullImage);
var imageResult = await LoadInternalAsync(path, generateThumbnailsFromFiles, loadFullImage);

var img = imageResult.ImageSource;
if (imageResult.ImageType != ImageType.Error && imageResult.ImageType != ImageType.Cache)
Expand Down

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