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Cache image brush & Invoke on UI thread

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Jack251970 2025-02-25 18:14:42 +08:00
parent 1a6733e86d
commit ff45f5f7f5
1 changed files with 13 additions and 4 deletions
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17
Flow.Launcher/Helper/WallpaperPathRetrieval.cs
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@ -3,6 +3,7 @@ using System.Collections.Generic;
using System.IO; using System.IO;
using System.Linq; using System.Linq;
using System.Runtime.InteropServices; using System.Runtime.InteropServices;
using System.Windows;
using System.Windows.Media; using System.Windows.Media;
using System.Windows.Media.Imaging; using System.Windows.Media.Imaging;
using Microsoft.Win32; using Microsoft.Win32;
@ -15,10 +16,16 @@ public static class WallpaperPathRetrieval
{ {
private static readonly int MAX_PATH = 260; private static readonly int MAX_PATH = 260;
private static readonly Dictionary<DateTime, BitmapImage> wallpaperCache = new(); private static readonly Dictionary<DateTime, ImageBrush> wallpaperCache = new();
public static Brush GetWallpaperBrush() public static Brush GetWallpaperBrush()
{ {
// Invoke the method on the UI thread
if (!Application.Current.Dispatcher.CheckAccess())
{
return Application.Current.Dispatcher.Invoke(GetWallpaperBrush);
}
var wallpaper = GetWallpaperPath(); var wallpaper = GetWallpaperPath();
if (wallpaper is not null && File.Exists(wallpaper)) if (wallpaper is not null && File.Exists(wallpaper))
{ {
@ -28,7 +35,7 @@ public static class WallpaperPathRetrieval
wallpaperCache.TryGetValue(dateModified, out var cachedWallpaper); wallpaperCache.TryGetValue(dateModified, out var cachedWallpaper);
if (cachedWallpaper != null) if (cachedWallpaper != null)
{ {
return new ImageBrush(cachedWallpaper) { Stretch = Stretch.UniformToFill }; return cachedWallpaper;
} }
// We should not dispose the memory stream since the bitmap is still in use // We should not dispose the memory stream since the bitmap is still in use
@ -40,8 +47,10 @@ public static class WallpaperPathRetrieval
bitmap.DecodePixelHeight = 600; bitmap.DecodePixelHeight = 600;
bitmap.EndInit(); bitmap.EndInit();
bitmap.Freeze(); // Make the bitmap thread-safe bitmap.Freeze(); // Make the bitmap thread-safe
wallpaperCache[dateModified] = bitmap; var wallpaperBrush = new ImageBrush(bitmap) { Stretch = Stretch.UniformToFill };
return new ImageBrush(bitmap) { Stretch = Stretch.UniformToFill }; wallpaperBrush.Freeze(); // Make the brush thread-safe
wallpaperCache.Add(dateModified, wallpaperBrush);
return wallpaperBrush;
} }
var wallpaperColor = GetWallpaperColor(); var wallpaperColor = GetWallpaperColor();