CydandClaude Opus 4.8
fe87c79f55
Retargets RioJoy.Core/Overlay/Tray + tests from net8.0-windows to net48 so the app can be tested as a framework-dependent build (relies on the in-box .NET Framework 4.8 on Windows 10/11). Builds clean; all 241 tests pass. Polyfills (no behavior change): - PolySharp source generator for init/records/Index/Range/required members. - System.Memory, System.Text.Json, Microsoft.Bcl.HashCode, System.Threading.Channels (tests) NuGet packages. - Compat/Net48Polyfills.cs: GetValueOrDefault, KeyValuePair.Deconstruct, Math.Clamp; tests/TestPolyfills.cs: Task.WaitAsync. Source adjustments for APIs absent on net48: - ArgumentNullException/ArgumentException.ThrowIf* inlined to manual guards. - Convert.ToHexString, Encoding.Latin1, Environment.ProcessPath, ApplicationConfiguration.Initialize, Enum.GetNames<T>/GetValues<T>, string.StartsWith(char), string.Split(char, opts), TextBox.PlaceholderText, PeriodicTimer, Memory-based Stream Read/WriteAsync, array range-slicing. - Dropped [SupportedOSPlatform] hints (net48 is single-platform). deploy/build-package.ps1: publish framework-dependent (no self-contained). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
41 lines
1.8 KiB
C#
41 lines
1.8 KiB
C#
using System.Runtime.InteropServices;
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namespace RioJoy.Tray;
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/// <summary>
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/// Sets the Windows desktop wallpaper to a generated cockpit overlay
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/// (Phase 7 — the modern replacement for manually setting the GIMP-exported
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/// background). Wraps <c>SystemParametersInfo(SPI_SETDESKWALLPAPER)</c>.
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///
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/// <para>Windows requires a <strong>BMP</strong> file path for reliable results on
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/// all versions; PNGs are accepted on modern Windows but not guaranteed, so callers
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/// should hand this a path the overlay renderer wrote. Applying a wallpaper changes
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/// a user-visible system setting, so it is only invoked on an explicit profile
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/// activation, never speculatively.</para>
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/// </summary>
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public static class WallpaperApplier
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{
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private const int SPI_SETDESKWALLPAPER = 0x0014;
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private const int SPIF_UPDATEINIFILE = 0x01; // persist across logon
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private const int SPIF_SENDCHANGE = 0x02; // broadcast WM_SETTINGCHANGE
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/// <summary>
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/// Apply <paramref name="imagePath"/> as the desktop wallpaper. Returns true on
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/// success. Throws if the file does not exist.
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/// </summary>
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public static bool Apply(string imagePath)
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{
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if (string.IsNullOrWhiteSpace(imagePath)) throw new ArgumentException("Value cannot be null or whitespace.", nameof(imagePath));
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string full = Path.GetFullPath(imagePath);
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if (!File.Exists(full))
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throw new FileNotFoundException("Wallpaper image not found.", full);
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return SystemParametersInfo(
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SPI_SETDESKWALLPAPER, 0, full, SPIF_UPDATEINIFILE | SPIF_SENDCHANGE);
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}
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[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
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[return: MarshalAs(UnmanagedType.Bool)]
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private static extern bool SystemParametersInfo(int uAction, int uParam, string lpvParam, int fuWinIni);
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}
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