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Add cache size management & Add error handling

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This commit is contained in:
Jack251970 2025-02-28 15:34:59 +08:00
parent 0fddb84735
commit 9dbc174994
1 changed files with 45 additions and 24 deletions
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69
Flow.Launcher/Helper/WallpaperPathRetrieval.cs
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@ -17,6 +17,7 @@ public static class WallpaperPathRetrieval
private static readonly int MAX_PATH = 260;
private static readonly Dictionary<(string, DateTime), ImageBrush> wallpaperCache = new();
private const int MaxCacheSize = 3;
public static Brush GetWallpaperBrush()
{
@ -26,35 +27,55 @@ public static class WallpaperPathRetrieval
return Application.Current.Dispatcher.Invoke(GetWallpaperBrush);
}
var wallpaperPath = GetWallpaperPath();
if (wallpaperPath is not null && File.Exists(wallpaperPath))
try
{
// Since the wallpaper file name can be the same (TranscodedWallpaper),
// we need to add the last modified date to differentiate them
var dateModified = File.GetLastWriteTime(wallpaperPath);
wallpaperCache.TryGetValue((wallpaperPath, dateModified), out var cachedWallpaper);
if (cachedWallpaper != null)
var wallpaperPath = GetWallpaperPath();
if (wallpaperPath is not null && File.Exists(wallpaperPath))
{
return cachedWallpaper;
// Since the wallpaper file name can be the same (TranscodedWallpaper),
// we need to add the last modified date to differentiate them
var dateModified = File.GetLastWriteTime(wallpaperPath);
wallpaperCache.TryGetValue((wallpaperPath, dateModified), out var cachedWallpaper);
if (cachedWallpaper != null)
{
return cachedWallpaper;
}
// We should not dispose the memory stream since the bitmap is still in use
var memStream = new MemoryStream(File.ReadAllBytes(wallpaperPath));
var bitmap = new BitmapImage();
bitmap.BeginInit();
bitmap.StreamSource = memStream;
bitmap.DecodePixelWidth = 800;
bitmap.DecodePixelHeight = 600;
bitmap.EndInit();
bitmap.Freeze(); // Make the bitmap thread-safe
var wallpaperBrush = new ImageBrush(bitmap) { Stretch = Stretch.UniformToFill };
wallpaperBrush.Freeze(); // Make the brush thread-safe
// Manage cache size
if (wallpaperCache.Count >= MaxCacheSize)
{
// Remove the oldest wallpaper from the cache
var oldestCache = wallpaperCache.Keys.OrderBy(k => k.Item2).FirstOrDefault();
if (oldestCache != default)
{
wallpaperCache.Remove(oldestCache);
}
}
wallpaperCache.Add((wallpaperPath, dateModified), wallpaperBrush);
return wallpaperBrush;
}
// We should not dispose the memory stream since the bitmap is still in use
var memStream = new MemoryStream(File.ReadAllBytes(wallpaperPath));
var bitmap = new BitmapImage();
bitmap.BeginInit();
bitmap.StreamSource = memStream;
bitmap.DecodePixelWidth = 800;
bitmap.DecodePixelHeight = 600;
bitmap.EndInit();
bitmap.Freeze(); // Make the bitmap thread-safe
var wallpaperBrush = new ImageBrush(bitmap) { Stretch = Stretch.UniformToFill };
wallpaperBrush.Freeze(); // Make the brush thread-safe
wallpaperCache.Add((wallpaperPath, dateModified), wallpaperBrush);
return wallpaperBrush;
var wallpaperColor = GetWallpaperColor();
return new SolidColorBrush(wallpaperColor);
}
catch (Exception ex)
{
App.API.LogException(nameof(WallpaperPathRetrieval), "Error retrieving wallpaper", ex);
return new SolidColorBrush(Colors.Transparent);
}
var wallpaperColor = GetWallpaperColor();
return new SolidColorBrush(wallpaperColor);
}
private static unsafe string GetWallpaperPath()