3 Commits

Author SHA1 Message Date
2a4e35cd39 Fix compilation: restore clean RC1 codebase
- Restore clean BindableProperty.Create syntax from RC1 commit
- Remove decompiler artifacts with mangled delegate types
- Add Svg.Skia package reference for icon support
- Fix duplicate type definitions
- Library now compiles successfully (0 errors)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-01 07:43:44 -05:00
33914bf572 Add fixfuckup.md - recovery plan for lost XAML and AppThemeBinding work 2026-01-01 06:30:34 -05:00
1f096c38dc Update with recovered code from VM binaries (Jan 1)
Recovered from decompiled OpenMaui.Controls.Linux.dll:
- SkiaShell.cs: FlyoutHeader, FlyoutFooter, scroll support (918 -> 1325 lines)
- X11Window.cs: Cursor support (XCreateFontCursor, XDefineCursor)
- All handlers with dark mode support
- All services with latest implementations
- LinuxApplication with theme change handling
2026-01-01 06:22:48 -05:00
16 changed files with 254 additions and 3845 deletions

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@@ -1,207 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using Microsoft.Maui.Handlers;
namespace Microsoft.Maui.Platform;
/// <summary>
/// Linux handler for WebView control using WebKitGTK.
/// </summary>
public partial class WebViewHandler : ViewHandler<IWebView, LinuxWebView>
{
/// <summary>
/// Property mapper for WebView properties.
/// </summary>
public static IPropertyMapper<IWebView, WebViewHandler> Mapper = new PropertyMapper<IWebView, WebViewHandler>(ViewHandler.ViewMapper)
{
[nameof(IWebView.Source)] = MapSource,
[nameof(IWebView.UserAgent)] = MapUserAgent,
};
/// <summary>
/// Command mapper for WebView commands.
/// </summary>
public static CommandMapper<IWebView, WebViewHandler> CommandMapper = new(ViewHandler.ViewCommandMapper)
{
[nameof(IWebView.GoBack)] = MapGoBack,
[nameof(IWebView.GoForward)] = MapGoForward,
[nameof(IWebView.Reload)] = MapReload,
[nameof(IWebView.Eval)] = MapEval,
[nameof(IWebView.EvaluateJavaScriptAsync)] = MapEvaluateJavaScriptAsync,
};
public WebViewHandler() : base(Mapper, CommandMapper)
{
}
public WebViewHandler(IPropertyMapper? mapper)
: base(mapper ?? Mapper, CommandMapper)
{
}
public WebViewHandler(IPropertyMapper? mapper, CommandMapper? commandMapper)
: base(mapper ?? Mapper, commandMapper ?? CommandMapper)
{
}
protected override LinuxWebView CreatePlatformView()
{
Console.WriteLine("[WebViewHandler] Creating LinuxWebView");
return new LinuxWebView();
}
protected override void ConnectHandler(LinuxWebView platformView)
{
base.ConnectHandler(platformView);
platformView.Navigating += OnNavigating;
platformView.Navigated += OnNavigated;
// Map initial properties
if (VirtualView != null)
{
MapSource(this, VirtualView);
MapUserAgent(this, VirtualView);
}
Console.WriteLine("[WebViewHandler] Handler connected");
}
protected override void DisconnectHandler(LinuxWebView platformView)
{
platformView.Navigating -= OnNavigating;
platformView.Navigated -= OnNavigated;
base.DisconnectHandler(platformView);
Console.WriteLine("[WebViewHandler] Handler disconnected");
}
private void OnNavigating(object? sender, WebViewNavigatingEventArgs e)
{
if (VirtualView == null)
return;
// Notify the virtual view about navigation starting
VirtualView.Navigating(WebNavigationEvent.NewPage, e.Url);
}
private void OnNavigated(object? sender, WebViewNavigatedEventArgs e)
{
if (VirtualView == null)
return;
// Notify the virtual view about navigation completed
var result = e.Success ? WebNavigationResult.Success : WebNavigationResult.Failure;
VirtualView.Navigated(WebNavigationEvent.NewPage, e.Url, result);
}
#region Property Mappers
public static void MapSource(WebViewHandler handler, IWebView webView)
{
var source = webView.Source;
if (source == null)
return;
Console.WriteLine($"[WebViewHandler] MapSource: {source.GetType().Name}");
if (source is IUrlWebViewSource urlSource && !string.IsNullOrEmpty(urlSource.Url))
{
handler.PlatformView?.LoadUrl(urlSource.Url);
}
else if (source is IHtmlWebViewSource htmlSource && !string.IsNullOrEmpty(htmlSource.Html))
{
handler.PlatformView?.LoadHtml(htmlSource.Html, htmlSource.BaseUrl);
}
}
public static void MapUserAgent(WebViewHandler handler, IWebView webView)
{
if (handler.PlatformView != null && !string.IsNullOrEmpty(webView.UserAgent))
{
handler.PlatformView.UserAgent = webView.UserAgent;
Console.WriteLine($"[WebViewHandler] MapUserAgent: {webView.UserAgent}");
}
}
#endregion
#region Command Mappers
public static void MapGoBack(WebViewHandler handler, IWebView webView, object? args)
{
if (handler.PlatformView?.CanGoBack == true)
{
handler.PlatformView.GoBack();
Console.WriteLine("[WebViewHandler] GoBack");
}
}
public static void MapGoForward(WebViewHandler handler, IWebView webView, object? args)
{
if (handler.PlatformView?.CanGoForward == true)
{
handler.PlatformView.GoForward();
Console.WriteLine("[WebViewHandler] GoForward");
}
}
public static void MapReload(WebViewHandler handler, IWebView webView, object? args)
{
handler.PlatformView?.Reload();
Console.WriteLine("[WebViewHandler] Reload");
}
public static void MapEval(WebViewHandler handler, IWebView webView, object? args)
{
if (args is string script)
{
handler.PlatformView?.Eval(script);
Console.WriteLine($"[WebViewHandler] Eval: {script.Substring(0, Math.Min(50, script.Length))}...");
}
}
public static void MapEvaluateJavaScriptAsync(WebViewHandler handler, IWebView webView, object? args)
{
if (args is EvaluateJavaScriptAsyncRequest request)
{
var result = handler.PlatformView?.EvaluateJavaScriptAsync(request.Script);
if (result != null)
{
result.ContinueWith(t =>
{
request.SetResult(t.Result);
});
}
else
{
request.SetResult(null);
}
Console.WriteLine($"[WebViewHandler] EvaluateJavaScriptAsync: {request.Script.Substring(0, Math.Min(50, request.Script.Length))}...");
}
}
#endregion
}
/// <summary>
/// Request object for async JavaScript evaluation.
/// </summary>
public class EvaluateJavaScriptAsyncRequest
{
public string Script { get; }
private readonly TaskCompletionSource<string?> _tcs = new();
public EvaluateJavaScriptAsyncRequest(string script)
{
Script = script;
}
public Task<string?> Task => _tcs.Task;
public void SetResult(string? result)
{
_tcs.TrySetResult(result);
}
}

View File

@@ -98,9 +98,6 @@ public static class LinuxMauiAppBuilderExtensions
handlers.AddHandler<ImageButton, ImageButtonHandler>();
handlers.AddHandler<GraphicsView, GraphicsViewHandler>();
// Web
handlers.AddHandler<WebView, WebViewHandler>();
// Collection Views
handlers.AddHandler<CollectionView, CollectionViewHandler>();
handlers.AddHandler<ListView, CollectionViewHandler>();

View File

@@ -1,345 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Runtime.InteropServices;
namespace Microsoft.Maui.Platform.Linux.Interop;
/// <summary>
/// P/Invoke bindings for WebKitGTK library.
/// WebKitGTK provides a full-featured web browser engine for Linux.
/// </summary>
public static class WebKitGtk
{
private const string WebKit2Lib = "libwebkit2gtk-4.1.so.0";
private const string GtkLib = "libgtk-3.so.0";
private const string GObjectLib = "libgobject-2.0.so.0";
private const string GLibLib = "libglib-2.0.so.0";
#region GTK Initialization
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern bool gtk_init_check(ref int argc, ref IntPtr argv);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_main();
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_main_quit();
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern bool gtk_events_pending();
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_main_iteration();
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern bool gtk_main_iteration_do(bool blocking);
#endregion
#region GTK Window
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr gtk_window_new(int type);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_window_set_default_size(IntPtr window, int width, int height);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_window_set_decorated(IntPtr window, bool decorated);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_window_move(IntPtr window, int x, int y);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_window_resize(IntPtr window, int width, int height);
#endregion
#region GTK Widget
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_widget_show_all(IntPtr widget);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_widget_show(IntPtr widget);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_widget_hide(IntPtr widget);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_widget_destroy(IntPtr widget);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_widget_set_size_request(IntPtr widget, int width, int height);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_widget_realize(IntPtr widget);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr gtk_widget_get_window(IntPtr widget);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_widget_set_can_focus(IntPtr widget, bool canFocus);
#endregion
#region GTK Container
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_container_add(IntPtr container, IntPtr widget);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void gtk_container_remove(IntPtr container, IntPtr widget);
#endregion
#region GTK Plug (for embedding in X11 windows)
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr gtk_plug_new(ulong socketId);
[DllImport(GtkLib, CallingConvention = CallingConvention.Cdecl)]
public static extern ulong gtk_plug_get_id(IntPtr plug);
#endregion
#region WebKitWebView
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_view_new();
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_view_new_with_context(IntPtr context);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_web_view_load_uri(IntPtr webView, [MarshalAs(UnmanagedType.LPUTF8Str)] string uri);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_web_view_load_html(IntPtr webView,
[MarshalAs(UnmanagedType.LPUTF8Str)] string content,
[MarshalAs(UnmanagedType.LPUTF8Str)] string? baseUri);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_web_view_reload(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_web_view_stop_loading(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_web_view_go_back(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_web_view_go_forward(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern bool webkit_web_view_can_go_back(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern bool webkit_web_view_can_go_forward(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_view_get_uri(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_view_get_title(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern double webkit_web_view_get_estimated_load_progress(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern bool webkit_web_view_is_loading(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_web_view_run_javascript(IntPtr webView,
[MarshalAs(UnmanagedType.LPUTF8Str)] string script,
IntPtr cancellable,
IntPtr callback,
IntPtr userData);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_view_run_javascript_finish(IntPtr webView,
IntPtr result,
out IntPtr error);
#endregion
#region WebKitSettings
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_view_get_settings(IntPtr webView);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_settings_set_enable_javascript(IntPtr settings, bool enabled);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_settings_set_user_agent(IntPtr settings,
[MarshalAs(UnmanagedType.LPUTF8Str)] string userAgent);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_settings_get_user_agent(IntPtr settings);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_settings_set_enable_developer_extras(IntPtr settings, bool enabled);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_settings_set_javascript_can_access_clipboard(IntPtr settings, bool enabled);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_settings_set_enable_webgl(IntPtr settings, bool enabled);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_settings_set_allow_file_access_from_file_urls(IntPtr settings, bool enabled);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_settings_set_allow_universal_access_from_file_urls(IntPtr settings, bool enabled);
#endregion
#region WebKitWebContext
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_context_get_default();
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_context_new();
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_web_context_get_cookie_manager(IntPtr context);
#endregion
#region WebKitCookieManager
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_cookie_manager_set_accept_policy(IntPtr cookieManager, int policy);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_cookie_manager_set_persistent_storage(IntPtr cookieManager,
[MarshalAs(UnmanagedType.LPUTF8Str)] string filename,
int storage);
// Cookie accept policies
public const int WEBKIT_COOKIE_POLICY_ACCEPT_ALWAYS = 0;
public const int WEBKIT_COOKIE_POLICY_ACCEPT_NEVER = 1;
public const int WEBKIT_COOKIE_POLICY_ACCEPT_NO_THIRD_PARTY = 2;
// Cookie persistent storage types
public const int WEBKIT_COOKIE_PERSISTENT_STORAGE_TEXT = 0;
public const int WEBKIT_COOKIE_PERSISTENT_STORAGE_SQLITE = 1;
#endregion
#region WebKitNavigationAction
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_navigation_action_get_request(IntPtr action);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern int webkit_navigation_action_get_navigation_type(IntPtr action);
#endregion
#region WebKitURIRequest
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern IntPtr webkit_uri_request_get_uri(IntPtr request);
#endregion
#region WebKitPolicyDecision
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_policy_decision_use(IntPtr decision);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_policy_decision_ignore(IntPtr decision);
[DllImport(WebKit2Lib, CallingConvention = CallingConvention.Cdecl)]
public static extern void webkit_policy_decision_download(IntPtr decision);
#endregion
#region GObject Signal Connection
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate void GCallback();
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate void LoadChangedCallback(IntPtr webView, int loadEvent, IntPtr userData);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate bool DecidePolicyCallback(IntPtr webView, IntPtr decision, int decisionType, IntPtr userData);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate void LoadFailedCallback(IntPtr webView, int loadEvent, IntPtr failingUri, IntPtr error, IntPtr userData);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate void NotifyCallback(IntPtr webView, IntPtr paramSpec, IntPtr userData);
[DllImport(GObjectLib, CallingConvention = CallingConvention.Cdecl)]
public static extern ulong g_signal_connect_data(IntPtr instance,
[MarshalAs(UnmanagedType.LPUTF8Str)] string detailedSignal,
Delegate handler,
IntPtr data,
IntPtr destroyData,
int connectFlags);
[DllImport(GObjectLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void g_signal_handler_disconnect(IntPtr instance, ulong handlerId);
[DllImport(GObjectLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void g_object_unref(IntPtr obj);
#endregion
#region GLib Memory
[DllImport(GLibLib, CallingConvention = CallingConvention.Cdecl)]
public static extern void g_free(IntPtr mem);
#endregion
#region WebKit Load Events
public const int WEBKIT_LOAD_STARTED = 0;
public const int WEBKIT_LOAD_REDIRECTED = 1;
public const int WEBKIT_LOAD_COMMITTED = 2;
public const int WEBKIT_LOAD_FINISHED = 3;
#endregion
#region WebKit Policy Decision Types
public const int WEBKIT_POLICY_DECISION_TYPE_NAVIGATION_ACTION = 0;
public const int WEBKIT_POLICY_DECISION_TYPE_NEW_WINDOW_ACTION = 1;
public const int WEBKIT_POLICY_DECISION_TYPE_RESPONSE = 2;
#endregion
#region Helper Methods
/// <summary>
/// Converts a native UTF-8 string pointer to a managed string.
/// </summary>
public static string? PtrToStringUtf8(IntPtr ptr)
{
if (ptr == IntPtr.Zero)
return null;
return Marshal.PtrToStringUTF8(ptr);
}
/// <summary>
/// Processes pending GTK events without blocking.
/// </summary>
public static void ProcessGtkEvents()
{
while (gtk_events_pending())
{
gtk_main_iteration_do(false);
}
}
#endregion
}

View File

@@ -46,6 +46,9 @@
<!-- HarfBuzz for advanced text shaping -->
<PackageReference Include="HarfBuzzSharp" Version="7.3.0.3" />
<PackageReference Include="HarfBuzzSharp.NativeAssets.Linux" Version="7.3.0.3" />
<!-- SVG support for icon loading -->
<PackageReference Include="Svg.Skia" Version="2.0.0.4" />
</ItemGroup>
<!-- Include README and icon in package -->

View File

@@ -1,349 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using SkiaSharp;
using Microsoft.Maui.Platform.Linux.Window;
using System.Runtime.InteropServices;
namespace Microsoft.Maui.Platform.Linux.Rendering;
/// <summary>
/// GPU-accelerated rendering engine using OpenGL.
/// Falls back to software rendering if GPU initialization fails.
/// </summary>
public class GpuRenderingEngine : IDisposable
{
private readonly X11Window _window;
private GRContext? _grContext;
private GRBackendRenderTarget? _renderTarget;
private SKSurface? _surface;
private SKCanvas? _canvas;
private bool _disposed;
private bool _gpuAvailable;
private int _width;
private int _height;
// Fallback to software rendering
private SKBitmap? _softwareBitmap;
private SKCanvas? _softwareCanvas;
// Dirty region tracking
private readonly List<SKRect> _dirtyRegions = new();
private readonly object _dirtyLock = new();
private bool _fullRedrawNeeded = true;
private const int MaxDirtyRegions = 32;
/// <summary>
/// Gets whether GPU acceleration is available and active.
/// </summary>
public bool IsGpuAccelerated => _gpuAvailable && _grContext != null;
/// <summary>
/// Gets the current rendering backend name.
/// </summary>
public string BackendName => IsGpuAccelerated ? "OpenGL" : "Software";
public int Width => _width;
public int Height => _height;
public GpuRenderingEngine(X11Window window)
{
_window = window;
_width = window.Width;
_height = window.Height;
// Try to initialize GPU rendering
_gpuAvailable = TryInitializeGpu();
if (!_gpuAvailable)
{
Console.WriteLine("[GpuRenderingEngine] GPU not available, using software rendering");
InitializeSoftwareRendering();
}
_window.Resized += OnWindowResized;
_window.Exposed += OnWindowExposed;
}
private bool TryInitializeGpu()
{
try
{
// Check if we can create an OpenGL context
var glInterface = GRGlInterface.Create();
if (glInterface == null)
{
Console.WriteLine("[GpuRenderingEngine] Failed to create GL interface");
return false;
}
_grContext = GRContext.CreateGl(glInterface);
if (_grContext == null)
{
Console.WriteLine("[GpuRenderingEngine] Failed to create GR context");
glInterface.Dispose();
return false;
}
CreateGpuSurface();
Console.WriteLine("[GpuRenderingEngine] GPU acceleration enabled");
return true;
}
catch (Exception ex)
{
Console.WriteLine($"[GpuRenderingEngine] GPU initialization failed: {ex.Message}");
return false;
}
}
private void CreateGpuSurface()
{
if (_grContext == null) return;
_renderTarget?.Dispose();
_surface?.Dispose();
var width = Math.Max(1, _width);
var height = Math.Max(1, _height);
// Create framebuffer info (assuming default framebuffer 0)
var framebufferInfo = new GRGlFramebufferInfo(0, SKColorType.Rgba8888.ToGlSizedFormat());
_renderTarget = new GRBackendRenderTarget(
width, height,
0, // sample count
8, // stencil bits
framebufferInfo);
_surface = SKSurface.Create(
_grContext,
_renderTarget,
GRSurfaceOrigin.BottomLeft,
SKColorType.Rgba8888);
if (_surface == null)
{
Console.WriteLine("[GpuRenderingEngine] Failed to create GPU surface, falling back to software");
_gpuAvailable = false;
InitializeSoftwareRendering();
return;
}
_canvas = _surface.Canvas;
}
private void InitializeSoftwareRendering()
{
var width = Math.Max(1, _width);
var height = Math.Max(1, _height);
_softwareBitmap?.Dispose();
_softwareCanvas?.Dispose();
var imageInfo = new SKImageInfo(width, height, SKColorType.Bgra8888, SKAlphaType.Premul);
_softwareBitmap = new SKBitmap(imageInfo);
_softwareCanvas = new SKCanvas(_softwareBitmap);
_canvas = _softwareCanvas;
}
private void OnWindowResized(object? sender, (int Width, int Height) size)
{
_width = size.Width;
_height = size.Height;
if (_gpuAvailable && _grContext != null)
{
CreateGpuSurface();
}
else
{
InitializeSoftwareRendering();
}
_fullRedrawNeeded = true;
}
private void OnWindowExposed(object? sender, EventArgs e)
{
_fullRedrawNeeded = true;
}
/// <summary>
/// Marks a region as needing redraw.
/// </summary>
public void InvalidateRegion(SKRect region)
{
if (region.IsEmpty || region.Width <= 0 || region.Height <= 0)
return;
region = SKRect.Intersect(region, new SKRect(0, 0, Width, Height));
if (region.IsEmpty) return;
lock (_dirtyLock)
{
if (_dirtyRegions.Count >= MaxDirtyRegions)
{
_fullRedrawNeeded = true;
_dirtyRegions.Clear();
return;
}
_dirtyRegions.Add(region);
}
}
/// <summary>
/// Marks the entire surface as needing redraw.
/// </summary>
public void InvalidateAll()
{
_fullRedrawNeeded = true;
}
/// <summary>
/// Renders the view tree with dirty region optimization.
/// </summary>
public void Render(SkiaView rootView)
{
if (_canvas == null) return;
// Measure and arrange
var availableSize = new SKSize(Width, Height);
rootView.Measure(availableSize);
rootView.Arrange(new SKRect(0, 0, Width, Height));
// Determine regions to redraw
List<SKRect> regionsToRedraw;
bool isFullRedraw;
lock (_dirtyLock)
{
isFullRedraw = _fullRedrawNeeded || _dirtyRegions.Count == 0;
if (isFullRedraw)
{
regionsToRedraw = new List<SKRect> { new SKRect(0, 0, Width, Height) };
_dirtyRegions.Clear();
_fullRedrawNeeded = false;
}
else
{
regionsToRedraw = new List<SKRect>(_dirtyRegions);
_dirtyRegions.Clear();
}
}
// Render each dirty region
foreach (var region in regionsToRedraw)
{
_canvas.Save();
if (!isFullRedraw)
{
_canvas.ClipRect(region);
}
// Clear region
_canvas.Clear(SKColors.White);
// Draw view tree
rootView.Draw(_canvas);
_canvas.Restore();
}
// Draw popup overlays
SkiaView.DrawPopupOverlays(_canvas);
// Draw modal dialogs
if (LinuxDialogService.HasActiveDialog)
{
LinuxDialogService.DrawDialogs(_canvas, new SKRect(0, 0, Width, Height));
}
_canvas.Flush();
// Present to window
if (_gpuAvailable && _grContext != null)
{
_grContext.Submit();
// Swap buffers would happen here via GLX/EGL
}
else if (_softwareBitmap != null)
{
var pixels = _softwareBitmap.GetPixels();
if (pixels != IntPtr.Zero)
{
_window.DrawPixels(pixels, Width, Height, _softwareBitmap.RowBytes);
}
}
}
/// <summary>
/// Gets performance statistics for the GPU context.
/// </summary>
public GpuStats GetStats()
{
if (_grContext == null)
{
return new GpuStats { IsGpuAccelerated = false };
}
// Get resource cache limits from GRContext
_grContext.GetResourceCacheLimits(out var maxResources, out var maxBytes);
return new GpuStats
{
IsGpuAccelerated = true,
MaxTextureSize = 4096, // Common default, SkiaSharp doesn't expose this directly
ResourceCacheUsedBytes = 0, // Would need to track manually
ResourceCacheLimitBytes = maxBytes
};
}
/// <summary>
/// Purges unused GPU resources to free memory.
/// </summary>
public void PurgeResources()
{
_grContext?.PurgeResources();
}
public SKCanvas? GetCanvas() => _canvas;
protected virtual void Dispose(bool disposing)
{
if (!_disposed)
{
if (disposing)
{
_window.Resized -= OnWindowResized;
_window.Exposed -= OnWindowExposed;
_surface?.Dispose();
_renderTarget?.Dispose();
_grContext?.Dispose();
_softwareBitmap?.Dispose();
_softwareCanvas?.Dispose();
}
_disposed = true;
}
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
}
/// <summary>
/// GPU performance statistics.
/// </summary>
public class GpuStats
{
public bool IsGpuAccelerated { get; init; }
public int MaxTextureSize { get; init; }
public long ResourceCacheUsedBytes { get; init; }
public long ResourceCacheLimitBytes { get; init; }
public double ResourceCacheUsedMB => ResourceCacheUsedBytes / (1024.0 * 1024.0);
public double ResourceCacheLimitMB => ResourceCacheLimitBytes / (1024.0 * 1024.0);
}

View File

@@ -9,43 +9,22 @@ using System.Runtime.InteropServices;
namespace Microsoft.Maui.Platform.Linux.Rendering;
/// <summary>
/// Manages Skia rendering to an X11 window with dirty region optimization.
/// Manages Skia rendering to an X11 window.
/// </summary>
public class SkiaRenderingEngine : IDisposable
{
private readonly X11Window _window;
private SKBitmap? _bitmap;
private SKBitmap? _backBuffer;
private SKCanvas? _canvas;
private SKImageInfo _imageInfo;
private bool _disposed;
private bool _fullRedrawNeeded = true;
// Dirty region tracking for optimized rendering
private readonly List<SKRect> _dirtyRegions = new();
private readonly object _dirtyLock = new();
private const int MaxDirtyRegions = 32;
private const float RegionMergeThreshold = 0.3f; // Merge if overlap > 30%
public static SkiaRenderingEngine? Current { get; private set; }
public ResourceCache ResourceCache { get; }
public int Width => _imageInfo.Width;
public int Height => _imageInfo.Height;
/// <summary>
/// Gets or sets whether dirty region optimization is enabled.
/// When disabled, full redraws occur (useful for debugging).
/// </summary>
public bool EnableDirtyRegionOptimization { get; set; } = true;
/// <summary>
/// Gets the number of dirty regions in the current frame.
/// </summary>
public int DirtyRegionCount
{
get { lock (_dirtyLock) return _dirtyRegions.Count; }
}
public SkiaRenderingEngine(X11Window window)
{
_window = window;
@@ -61,7 +40,6 @@ public class SkiaRenderingEngine : IDisposable
private void CreateSurface(int width, int height)
{
_bitmap?.Dispose();
_backBuffer?.Dispose();
_canvas?.Dispose();
_imageInfo = new SKImageInfo(
@@ -71,14 +49,9 @@ public class SkiaRenderingEngine : IDisposable
SKAlphaType.Premul);
_bitmap = new SKBitmap(_imageInfo);
_backBuffer = new SKBitmap(_imageInfo);
_canvas = new SKCanvas(_bitmap);
_fullRedrawNeeded = true;
lock (_dirtyLock)
{
_dirtyRegions.Clear();
}
}
private void OnWindowResized(object? sender, (int Width, int Height) size)
@@ -91,117 +64,28 @@ public class SkiaRenderingEngine : IDisposable
_fullRedrawNeeded = true;
}
/// <summary>
/// Marks the entire surface as needing redraw.
/// </summary>
public void InvalidateAll()
{
_fullRedrawNeeded = true;
}
/// <summary>
/// Marks a specific region as needing redraw.
/// Multiple regions are tracked and merged for efficiency.
/// </summary>
public void InvalidateRegion(SKRect region)
{
if (region.IsEmpty || region.Width <= 0 || region.Height <= 0)
return;
// Clamp to surface bounds
region = SKRect.Intersect(region, new SKRect(0, 0, Width, Height));
if (region.IsEmpty)
return;
lock (_dirtyLock)
{
// If we have too many regions, just do a full redraw
if (_dirtyRegions.Count >= MaxDirtyRegions)
{
_fullRedrawNeeded = true;
_dirtyRegions.Clear();
return;
}
// Try to merge with existing regions
for (int i = 0; i < _dirtyRegions.Count; i++)
{
var existing = _dirtyRegions[i];
if (ShouldMergeRegions(existing, region))
{
_dirtyRegions[i] = SKRect.Union(existing, region);
return;
}
}
_dirtyRegions.Add(region);
}
}
private bool ShouldMergeRegions(SKRect a, SKRect b)
{
// Check if regions overlap
var intersection = SKRect.Intersect(a, b);
if (intersection.IsEmpty)
{
// Check if they're adjacent (within a few pixels)
var expanded = new SKRect(a.Left - 4, a.Top - 4, a.Right + 4, a.Bottom + 4);
return expanded.IntersectsWith(b);
}
// Merge if intersection is significant relative to either region
var intersectionArea = intersection.Width * intersection.Height;
var aArea = a.Width * a.Height;
var bArea = b.Width * b.Height;
var minArea = Math.Min(aArea, bArea);
return intersectionArea / minArea >= RegionMergeThreshold;
}
/// <summary>
/// Renders the view tree, optionally using dirty region optimization.
/// </summary>
public void Render(SkiaView rootView)
{
if (_canvas == null || _bitmap == null)
return;
// Measure and arrange
_canvas.Clear(SKColors.White);
// Measure first, then arrange
var availableSize = new SKSize(Width, Height);
rootView.Measure(availableSize);
rootView.Arrange(new SKRect(0, 0, Width, Height));
// Determine what to redraw
List<SKRect> regionsToRedraw;
bool isFullRedraw = _fullRedrawNeeded || !EnableDirtyRegionOptimization;
lock (_dirtyLock)
{
if (isFullRedraw)
{
regionsToRedraw = new List<SKRect> { new SKRect(0, 0, Width, Height) };
_dirtyRegions.Clear();
_fullRedrawNeeded = false;
}
else if (_dirtyRegions.Count == 0)
{
// Nothing to redraw
return;
}
else
{
regionsToRedraw = MergeOverlappingRegions(_dirtyRegions.ToList());
_dirtyRegions.Clear();
}
}
// Render dirty regions
foreach (var region in regionsToRedraw)
{
RenderRegion(rootView, region, isFullRedraw);
}
// Draw popup overlays (always on top, full redraw)
// Draw the view tree
rootView.Draw(_canvas);
// Draw popup overlays (dropdowns, calendars, etc.) on top
SkiaView.DrawPopupOverlays(_canvas);
// Draw modal dialogs on top of everything
@@ -216,67 +100,6 @@ public class SkiaRenderingEngine : IDisposable
PresentToWindow();
}
private void RenderRegion(SkiaView rootView, SKRect region, bool isFullRedraw)
{
if (_canvas == null) return;
_canvas.Save();
if (!isFullRedraw)
{
// Clip to dirty region for partial updates
_canvas.ClipRect(region);
}
// Clear the region
using var clearPaint = new SKPaint { Color = SKColors.White, Style = SKPaintStyle.Fill };
_canvas.DrawRect(region, clearPaint);
// Draw the view tree (views will naturally clip to their bounds)
rootView.Draw(_canvas);
_canvas.Restore();
}
private List<SKRect> MergeOverlappingRegions(List<SKRect> regions)
{
if (regions.Count <= 1)
return regions;
var merged = new List<SKRect>();
var used = new bool[regions.Count];
for (int i = 0; i < regions.Count; i++)
{
if (used[i]) continue;
var current = regions[i];
used[i] = true;
// Keep merging until no more merges possible
bool didMerge;
do
{
didMerge = false;
for (int j = i + 1; j < regions.Count; j++)
{
if (used[j]) continue;
if (ShouldMergeRegions(current, regions[j]))
{
current = SKRect.Union(current, regions[j]);
used[j] = true;
didMerge = true;
}
}
} while (didMerge);
merged.Add(current);
}
return merged;
}
private void PresentToWindow()
{
if (_bitmap == null) return;
@@ -299,7 +122,6 @@ public class SkiaRenderingEngine : IDisposable
_window.Exposed -= OnWindowExposed;
_canvas?.Dispose();
_bitmap?.Dispose();
_backBuffer?.Dispose();
ResourceCache.Dispose();
if (Current == this) Current = null;
}

View File

@@ -1,326 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using System.Diagnostics;
using System.Text;
namespace Microsoft.Maui.Platform.Linux.Services;
/// <summary>
/// Fcitx5 Input Method service using D-Bus interface.
/// Provides IME support for systems using Fcitx5 (common on some distros).
/// </summary>
public class Fcitx5InputMethodService : IInputMethodService, IDisposable
{
private IInputContext? _currentContext;
private string _preEditText = string.Empty;
private int _preEditCursorPosition;
private bool _isActive;
private bool _disposed;
private Process? _dBusMonitor;
private string? _inputContextPath;
public bool IsActive => _isActive;
public string PreEditText => _preEditText;
public int PreEditCursorPosition => _preEditCursorPosition;
public event EventHandler<TextCommittedEventArgs>? TextCommitted;
public event EventHandler<PreEditChangedEventArgs>? PreEditChanged;
public event EventHandler? PreEditEnded;
public void Initialize(nint windowHandle)
{
try
{
// Create input context via D-Bus
var output = RunDBusCommand(
"call --session " +
"--dest org.fcitx.Fcitx5 " +
"--object-path /org/freedesktop/portal/inputmethod " +
"--method org.fcitx.Fcitx.InputMethod1.CreateInputContext " +
"\"maui-linux\" \"\"");
if (!string.IsNullOrEmpty(output) && output.Contains("/"))
{
// Parse the object path from output like: (objectpath '/org/fcitx/...',)
var start = output.IndexOf("'/");
var end = output.IndexOf("'", start + 1);
if (start >= 0 && end > start)
{
_inputContextPath = output.Substring(start + 1, end - start - 1);
Console.WriteLine($"Fcitx5InputMethodService: Created context at {_inputContextPath}");
StartMonitoring();
}
}
else
{
Console.WriteLine("Fcitx5InputMethodService: Failed to create input context");
}
}
catch (Exception ex)
{
Console.WriteLine($"Fcitx5InputMethodService: Initialization failed - {ex.Message}");
}
}
private void StartMonitoring()
{
if (string.IsNullOrEmpty(_inputContextPath)) return;
Task.Run(async () =>
{
try
{
var startInfo = new ProcessStartInfo
{
FileName = "dbus-monitor",
Arguments = $"--session \"path='{_inputContextPath}'\"",
UseShellExecute = false,
RedirectStandardOutput = true,
CreateNoWindow = true
};
_dBusMonitor = Process.Start(startInfo);
if (_dBusMonitor == null) return;
var reader = _dBusMonitor.StandardOutput;
while (!_disposed && !_dBusMonitor.HasExited)
{
var line = await reader.ReadLineAsync();
if (line == null) break;
// Parse signals for commit and preedit
if (line.Contains("CommitString"))
{
await ProcessCommitSignal(reader);
}
else if (line.Contains("UpdatePreedit"))
{
await ProcessPreeditSignal(reader);
}
}
}
catch (Exception ex)
{
Console.WriteLine($"Fcitx5InputMethodService: Monitor error - {ex.Message}");
}
});
}
private async Task ProcessCommitSignal(StreamReader reader)
{
try
{
for (int i = 0; i < 5; i++)
{
var line = await reader.ReadLineAsync();
if (line == null) break;
if (line.Contains("string"))
{
var match = System.Text.RegularExpressions.Regex.Match(line, @"string\s+""([^""]*)""");
if (match.Success)
{
var text = match.Groups[1].Value;
_preEditText = string.Empty;
_preEditCursorPosition = 0;
_isActive = false;
TextCommitted?.Invoke(this, new TextCommittedEventArgs(text));
_currentContext?.OnTextCommitted(text);
break;
}
}
}
}
catch { }
}
private async Task ProcessPreeditSignal(StreamReader reader)
{
try
{
for (int i = 0; i < 10; i++)
{
var line = await reader.ReadLineAsync();
if (line == null) break;
if (line.Contains("string"))
{
var match = System.Text.RegularExpressions.Regex.Match(line, @"string\s+""([^""]*)""");
if (match.Success)
{
_preEditText = match.Groups[1].Value;
_isActive = !string.IsNullOrEmpty(_preEditText);
PreEditChanged?.Invoke(this, new PreEditChangedEventArgs(_preEditText, _preEditCursorPosition, new List<PreEditAttribute>()));
_currentContext?.OnPreEditChanged(_preEditText, _preEditCursorPosition);
break;
}
}
}
}
catch { }
}
public void SetFocus(IInputContext? context)
{
_currentContext = context;
if (!string.IsNullOrEmpty(_inputContextPath))
{
if (context != null)
{
RunDBusCommand(
$"call --session --dest org.fcitx.Fcitx5 " +
$"--object-path {_inputContextPath} " +
$"--method org.fcitx.Fcitx.InputContext1.FocusIn");
}
else
{
RunDBusCommand(
$"call --session --dest org.fcitx.Fcitx5 " +
$"--object-path {_inputContextPath} " +
$"--method org.fcitx.Fcitx.InputContext1.FocusOut");
}
}
}
public void SetCursorLocation(int x, int y, int width, int height)
{
if (string.IsNullOrEmpty(_inputContextPath)) return;
RunDBusCommand(
$"call --session --dest org.fcitx.Fcitx5 " +
$"--object-path {_inputContextPath} " +
$"--method org.fcitx.Fcitx.InputContext1.SetCursorRect " +
$"{x} {y} {width} {height}");
}
public bool ProcessKeyEvent(uint keyCode, KeyModifiers modifiers, bool isKeyDown)
{
if (string.IsNullOrEmpty(_inputContextPath)) return false;
uint state = ConvertModifiers(modifiers);
if (!isKeyDown) state |= 0x40000000; // Release flag
var result = RunDBusCommand(
$"call --session --dest org.fcitx.Fcitx5 " +
$"--object-path {_inputContextPath} " +
$"--method org.fcitx.Fcitx.InputContext1.ProcessKeyEvent " +
$"{keyCode} {keyCode} {state} {(isKeyDown ? "true" : "false")} 0");
return result?.Contains("true") == true;
}
private uint ConvertModifiers(KeyModifiers modifiers)
{
uint state = 0;
if (modifiers.HasFlag(KeyModifiers.Shift)) state |= 1;
if (modifiers.HasFlag(KeyModifiers.CapsLock)) state |= 2;
if (modifiers.HasFlag(KeyModifiers.Control)) state |= 4;
if (modifiers.HasFlag(KeyModifiers.Alt)) state |= 8;
if (modifiers.HasFlag(KeyModifiers.Super)) state |= 64;
return state;
}
public void Reset()
{
if (!string.IsNullOrEmpty(_inputContextPath))
{
RunDBusCommand(
$"call --session --dest org.fcitx.Fcitx5 " +
$"--object-path {_inputContextPath} " +
$"--method org.fcitx.Fcitx.InputContext1.Reset");
}
_preEditText = string.Empty;
_preEditCursorPosition = 0;
_isActive = false;
PreEditEnded?.Invoke(this, EventArgs.Empty);
_currentContext?.OnPreEditEnded();
}
public void Shutdown()
{
Dispose();
}
private string? RunDBusCommand(string args)
{
try
{
var startInfo = new ProcessStartInfo
{
FileName = "gdbus",
Arguments = args,
UseShellExecute = false,
RedirectStandardOutput = true,
RedirectStandardError = true,
CreateNoWindow = true
};
using var process = Process.Start(startInfo);
if (process == null) return null;
var output = process.StandardOutput.ReadToEnd();
process.WaitForExit(1000);
return output;
}
catch
{
return null;
}
}
public void Dispose()
{
if (_disposed) return;
_disposed = true;
try
{
_dBusMonitor?.Kill();
_dBusMonitor?.Dispose();
}
catch { }
if (!string.IsNullOrEmpty(_inputContextPath))
{
RunDBusCommand(
$"call --session --dest org.fcitx.Fcitx5 " +
$"--object-path {_inputContextPath} " +
$"--method org.fcitx.Fcitx.InputContext1.Destroy");
}
}
/// <summary>
/// Checks if Fcitx5 is available on the system.
/// </summary>
public static bool IsAvailable()
{
try
{
var startInfo = new ProcessStartInfo
{
FileName = "gdbus",
Arguments = "introspect --session --dest org.fcitx.Fcitx5 --object-path /org/freedesktop/portal/inputmethod",
UseShellExecute = false,
RedirectStandardOutput = true,
RedirectStandardError = true,
CreateNoWindow = true
};
using var process = Process.Start(startInfo);
if (process == null) return false;
process.WaitForExit(1000);
return process.ExitCode == 0;
}
catch
{
return false;
}
}
}

View File

@@ -1,310 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using SkiaSharp;
namespace Microsoft.Maui.Platform.Linux.Services;
/// <summary>
/// Manages font fallback for text rendering when the primary font
/// doesn't contain glyphs for certain characters (emoji, CJK, etc.).
/// </summary>
public class FontFallbackManager
{
private static FontFallbackManager? _instance;
private static readonly object _lock = new();
/// <summary>
/// Gets the singleton instance of the font fallback manager.
/// </summary>
public static FontFallbackManager Instance
{
get
{
if (_instance == null)
{
lock (_lock)
{
_instance ??= new FontFallbackManager();
}
}
return _instance;
}
}
// Fallback font chain ordered by priority
private readonly string[] _fallbackFonts = new[]
{
// Primary sans-serif fonts
"Noto Sans",
"DejaVu Sans",
"Liberation Sans",
"FreeSans",
// Emoji fonts
"Noto Color Emoji",
"Noto Emoji",
"Symbola",
"Segoe UI Emoji",
// CJK fonts (Chinese, Japanese, Korean)
"Noto Sans CJK SC",
"Noto Sans CJK TC",
"Noto Sans CJK JP",
"Noto Sans CJK KR",
"WenQuanYi Micro Hei",
"WenQuanYi Zen Hei",
"Droid Sans Fallback",
// Arabic and RTL scripts
"Noto Sans Arabic",
"Noto Naskh Arabic",
"DejaVu Sans",
// Indic scripts
"Noto Sans Devanagari",
"Noto Sans Tamil",
"Noto Sans Bengali",
"Noto Sans Telugu",
// Thai
"Noto Sans Thai",
"Loma",
// Hebrew
"Noto Sans Hebrew",
// System fallbacks
"Sans",
"sans-serif"
};
// Cache for typeface lookups
private readonly Dictionary<string, SKTypeface?> _typefaceCache = new();
private readonly Dictionary<(int codepoint, string preferredFont), SKTypeface?> _glyphCache = new();
private FontFallbackManager()
{
// Pre-cache common fallback fonts
foreach (var fontName in _fallbackFonts.Take(10))
{
GetCachedTypeface(fontName);
}
}
/// <summary>
/// Gets a typeface that can render the specified codepoint.
/// Falls back through the font chain if the preferred font doesn't support it.
/// </summary>
/// <param name="codepoint">The Unicode codepoint to render.</param>
/// <param name="preferred">The preferred typeface to use.</param>
/// <returns>A typeface that can render the codepoint, or the preferred typeface as fallback.</returns>
public SKTypeface GetTypefaceForCodepoint(int codepoint, SKTypeface preferred)
{
// Check cache first
var cacheKey = (codepoint, preferred.FamilyName);
if (_glyphCache.TryGetValue(cacheKey, out var cached))
{
return cached ?? preferred;
}
// Check if preferred font has the glyph
if (TypefaceContainsGlyph(preferred, codepoint))
{
_glyphCache[cacheKey] = preferred;
return preferred;
}
// Search fallback fonts
foreach (var fontName in _fallbackFonts)
{
var fallback = GetCachedTypeface(fontName);
if (fallback != null && TypefaceContainsGlyph(fallback, codepoint))
{
_glyphCache[cacheKey] = fallback;
return fallback;
}
}
// No fallback found, return preferred (will show tofu)
_glyphCache[cacheKey] = null;
return preferred;
}
/// <summary>
/// Gets a typeface that can render all codepoints in the text.
/// For mixed scripts, use ShapeTextWithFallback instead.
/// </summary>
public SKTypeface GetTypefaceForText(string text, SKTypeface preferred)
{
if (string.IsNullOrEmpty(text))
return preferred;
// Check first non-ASCII character
foreach (var rune in text.EnumerateRunes())
{
if (rune.Value > 127)
{
return GetTypefaceForCodepoint(rune.Value, preferred);
}
}
return preferred;
}
/// <summary>
/// Shapes text with automatic font fallback for mixed scripts.
/// Returns a list of text runs, each with its own typeface.
/// </summary>
public List<TextRun> ShapeTextWithFallback(string text, SKTypeface preferred)
{
var runs = new List<TextRun>();
if (string.IsNullOrEmpty(text))
return runs;
var currentRun = new StringBuilder();
SKTypeface? currentTypeface = null;
int runStart = 0;
int charIndex = 0;
foreach (var rune in text.EnumerateRunes())
{
var typeface = GetTypefaceForCodepoint(rune.Value, preferred);
if (currentTypeface == null)
{
currentTypeface = typeface;
}
else if (typeface.FamilyName != currentTypeface.FamilyName)
{
// Typeface changed - save current run
if (currentRun.Length > 0)
{
runs.Add(new TextRun(currentRun.ToString(), currentTypeface, runStart));
}
currentRun.Clear();
currentTypeface = typeface;
runStart = charIndex;
}
currentRun.Append(rune.ToString());
charIndex += rune.Utf16SequenceLength;
}
// Add final run
if (currentRun.Length > 0 && currentTypeface != null)
{
runs.Add(new TextRun(currentRun.ToString(), currentTypeface, runStart));
}
return runs;
}
/// <summary>
/// Checks if a typeface is available on the system.
/// </summary>
public bool IsFontAvailable(string fontFamily)
{
var typeface = GetCachedTypeface(fontFamily);
return typeface != null && typeface.FamilyName.Equals(fontFamily, StringComparison.OrdinalIgnoreCase);
}
/// <summary>
/// Gets a list of available fallback fonts on this system.
/// </summary>
public IEnumerable<string> GetAvailableFallbackFonts()
{
foreach (var fontName in _fallbackFonts)
{
if (IsFontAvailable(fontName))
{
yield return fontName;
}
}
}
private SKTypeface? GetCachedTypeface(string fontFamily)
{
if (_typefaceCache.TryGetValue(fontFamily, out var cached))
{
return cached;
}
var typeface = SKTypeface.FromFamilyName(fontFamily);
// Check if we actually got the requested font or a substitution
if (typeface != null && !typeface.FamilyName.Equals(fontFamily, StringComparison.OrdinalIgnoreCase))
{
// Got a substitution, don't cache it as the requested font
typeface = null;
}
_typefaceCache[fontFamily] = typeface;
return typeface;
}
private bool TypefaceContainsGlyph(SKTypeface typeface, int codepoint)
{
// Use SKFont to check glyph coverage
using var font = new SKFont(typeface, 12);
var glyphs = new ushort[1];
var chars = char.ConvertFromUtf32(codepoint);
font.GetGlyphs(chars, glyphs);
// Glyph ID 0 is the "missing glyph" (tofu)
return glyphs[0] != 0;
}
}
/// <summary>
/// Represents a run of text with a specific typeface.
/// </summary>
public class TextRun
{
/// <summary>
/// The text content of this run.
/// </summary>
public string Text { get; }
/// <summary>
/// The typeface to use for this run.
/// </summary>
public SKTypeface Typeface { get; }
/// <summary>
/// The starting character index in the original string.
/// </summary>
public int StartIndex { get; }
public TextRun(string text, SKTypeface typeface, int startIndex)
{
Text = text;
Typeface = typeface;
StartIndex = startIndex;
}
}
/// <summary>
/// StringBuilder for internal use.
/// </summary>
file class StringBuilder
{
private readonly List<char> _chars = new();
public int Length => _chars.Count;
public void Append(string s)
{
_chars.AddRange(s);
}
public void Clear()
{
_chars.Clear();
}
public override string ToString()
{
return new string(_chars.ToArray());
}
}

View File

@@ -45,7 +45,6 @@ public static class InputMethodServiceFactory
return imePreference.ToLowerInvariant() switch
{
"ibus" => CreateIBusService(),
"fcitx" or "fcitx5" => CreateFcitx5Service(),
"xim" => CreateXIMService(),
"none" => new NullInputMethodService(),
_ => CreateAutoService()
@@ -57,30 +56,13 @@ public static class InputMethodServiceFactory
private static IInputMethodService CreateAutoService()
{
// Check GTK_IM_MODULE for hint
var imModule = Environment.GetEnvironmentVariable("GTK_IM_MODULE")?.ToLowerInvariant();
// Try Fcitx5 first if it's the configured IM
if (imModule?.Contains("fcitx") == true && Fcitx5InputMethodService.IsAvailable())
{
Console.WriteLine("InputMethodServiceFactory: Using Fcitx5");
return CreateFcitx5Service();
}
// Try IBus (most common on modern Linux)
// Try IBus first (most common on modern Linux)
if (IsIBusAvailable())
{
Console.WriteLine("InputMethodServiceFactory: Using IBus");
return CreateIBusService();
}
// Try Fcitx5 as fallback
if (Fcitx5InputMethodService.IsAvailable())
{
Console.WriteLine("InputMethodServiceFactory: Using Fcitx5");
return CreateFcitx5Service();
}
// Fall back to XIM
if (IsXIMAvailable())
{
@@ -106,19 +88,6 @@ public static class InputMethodServiceFactory
}
}
private static IInputMethodService CreateFcitx5Service()
{
try
{
return new Fcitx5InputMethodService();
}
catch (Exception ex)
{
Console.WriteLine($"InputMethodServiceFactory: Failed to create Fcitx5 service - {ex.Message}");
return new NullInputMethodService();
}
}
private static IInputMethodService CreateXIMService()
{
try

View File

@@ -2,33 +2,16 @@
// The .NET Foundation licenses this file to you under the MIT license.
using System.Diagnostics;
using System.Text;
using System.Collections.Concurrent;
namespace Microsoft.Maui.Platform.Linux.Services;
/// <summary>
/// Linux notification service using notify-send (libnotify) or D-Bus directly.
/// Supports interactive notifications with action callbacks.
/// Linux notification service using notify-send (libnotify).
/// </summary>
public class NotificationService
{
private readonly string _appName;
private readonly string? _defaultIconPath;
private readonly ConcurrentDictionary<uint, NotificationContext> _activeNotifications = new();
private static uint _notificationIdCounter = 1;
private Process? _dBusMonitor;
private bool _monitoringActions;
/// <summary>
/// Event raised when a notification action is invoked.
/// </summary>
public event EventHandler<NotificationActionEventArgs>? ActionInvoked;
/// <summary>
/// Event raised when a notification is closed.
/// </summary>
public event EventHandler<NotificationClosedEventArgs>? NotificationClosed;
public NotificationService(string appName = "MAUI Application", string? defaultIconPath = null)
{
@@ -36,165 +19,6 @@ public class NotificationService
_defaultIconPath = defaultIconPath;
}
/// <summary>
/// Starts monitoring for notification action callbacks via D-Bus.
/// Call this once at application startup if you want to receive action callbacks.
/// </summary>
public void StartActionMonitoring()
{
if (_monitoringActions) return;
_monitoringActions = true;
// Start D-Bus monitor for notification signals
Task.Run(MonitorNotificationSignals);
}
/// <summary>
/// Stops monitoring for notification action callbacks.
/// </summary>
public void StopActionMonitoring()
{
_monitoringActions = false;
try
{
_dBusMonitor?.Kill();
_dBusMonitor?.Dispose();
_dBusMonitor = null;
}
catch { }
}
private async Task MonitorNotificationSignals()
{
try
{
var startInfo = new ProcessStartInfo
{
FileName = "dbus-monitor",
Arguments = "--session \"interface='org.freedesktop.Notifications'\"",
UseShellExecute = false,
RedirectStandardOutput = true,
RedirectStandardError = true,
CreateNoWindow = true
};
_dBusMonitor = Process.Start(startInfo);
if (_dBusMonitor == null) return;
var reader = _dBusMonitor.StandardOutput;
var buffer = new StringBuilder();
while (_monitoringActions && !_dBusMonitor.HasExited)
{
var line = await reader.ReadLineAsync();
if (line == null) break;
buffer.AppendLine(line);
// Look for ActionInvoked or NotificationClosed signals
if (line.Contains("ActionInvoked"))
{
await ProcessActionInvoked(reader);
}
else if (line.Contains("NotificationClosed"))
{
await ProcessNotificationClosed(reader);
}
}
}
catch (Exception ex)
{
Console.WriteLine($"[NotificationService] D-Bus monitor error: {ex.Message}");
}
}
private async Task ProcessActionInvoked(StreamReader reader)
{
try
{
// Read the signal data (notification id and action key)
uint notificationId = 0;
string? actionKey = null;
for (int i = 0; i < 10; i++) // Read a few lines to get the data
{
var line = await reader.ReadLineAsync();
if (line == null) break;
if (line.Contains("uint32"))
{
var idMatch = System.Text.RegularExpressions.Regex.Match(line, @"uint32\s+(\d+)");
if (idMatch.Success)
{
notificationId = uint.Parse(idMatch.Groups[1].Value);
}
}
else if (line.Contains("string"))
{
var strMatch = System.Text.RegularExpressions.Regex.Match(line, @"string\s+""([^""]*)""");
if (strMatch.Success && actionKey == null)
{
actionKey = strMatch.Groups[1].Value;
}
}
if (notificationId > 0 && actionKey != null) break;
}
if (notificationId > 0 && actionKey != null)
{
if (_activeNotifications.TryGetValue(notificationId, out var context))
{
// Invoke callback if registered
if (context.ActionCallbacks?.TryGetValue(actionKey, out var callback) == true)
{
callback?.Invoke();
}
ActionInvoked?.Invoke(this, new NotificationActionEventArgs(notificationId, actionKey, context.Tag));
}
}
}
catch { }
}
private async Task ProcessNotificationClosed(StreamReader reader)
{
try
{
uint notificationId = 0;
uint reason = 0;
for (int i = 0; i < 5; i++)
{
var line = await reader.ReadLineAsync();
if (line == null) break;
if (line.Contains("uint32"))
{
var match = System.Text.RegularExpressions.Regex.Match(line, @"uint32\s+(\d+)");
if (match.Success)
{
if (notificationId == 0)
notificationId = uint.Parse(match.Groups[1].Value);
else
reason = uint.Parse(match.Groups[1].Value);
}
}
}
if (notificationId > 0)
{
_activeNotifications.TryRemove(notificationId, out var context);
NotificationClosed?.Invoke(this, new NotificationClosedEventArgs(
notificationId,
(NotificationCloseReason)reason,
context?.Tag));
}
}
catch { }
}
/// <summary>
/// Shows a simple notification.
/// </summary>
@@ -207,72 +31,6 @@ public class NotificationService
});
}
/// <summary>
/// Shows a notification with action buttons and callbacks.
/// </summary>
/// <param name="title">Notification title.</param>
/// <param name="message">Notification message.</param>
/// <param name="actions">List of action buttons with callbacks.</param>
/// <param name="tag">Optional tag to identify the notification in events.</param>
/// <returns>The notification ID.</returns>
public async Task<uint> ShowWithActionsAsync(
string title,
string message,
IEnumerable<NotificationAction> actions,
string? tag = null)
{
var notificationId = _notificationIdCounter++;
// Store context for callbacks
var context = new NotificationContext
{
Tag = tag,
ActionCallbacks = actions.ToDictionary(a => a.Key, a => a.Callback)
};
_activeNotifications[notificationId] = context;
// Build actions dictionary for options
var actionDict = actions.ToDictionary(a => a.Key, a => a.Label);
await ShowAsync(new NotificationOptions
{
Title = title,
Message = message,
Actions = actionDict
});
return notificationId;
}
/// <summary>
/// Cancels/closes an active notification.
/// </summary>
public async Task CancelAsync(uint notificationId)
{
try
{
// Use gdbus to close the notification
var startInfo = new ProcessStartInfo
{
FileName = "gdbus",
Arguments = $"call --session --dest org.freedesktop.Notifications " +
$"--object-path /org/freedesktop/Notifications " +
$"--method org.freedesktop.Notifications.CloseNotification {notificationId}",
UseShellExecute = false,
CreateNoWindow = true
};
using var process = Process.Start(startInfo);
if (process != null)
{
await process.WaitForExitAsync();
}
_activeNotifications.TryRemove(notificationId, out _);
}
catch { }
}
/// <summary>
/// Shows a notification with options.
/// </summary>
@@ -451,87 +209,3 @@ public enum NotificationUrgency
Normal,
Critical
}
/// <summary>
/// Reason a notification was closed.
/// </summary>
public enum NotificationCloseReason
{
Expired = 1,
Dismissed = 2,
Closed = 3,
Undefined = 4
}
/// <summary>
/// Internal context for tracking active notifications.
/// </summary>
internal class NotificationContext
{
public string? Tag { get; set; }
public Dictionary<string, Action?>? ActionCallbacks { get; set; }
}
/// <summary>
/// Event args for notification action events.
/// </summary>
public class NotificationActionEventArgs : EventArgs
{
public uint NotificationId { get; }
public string ActionKey { get; }
public string? Tag { get; }
public NotificationActionEventArgs(uint notificationId, string actionKey, string? tag)
{
NotificationId = notificationId;
ActionKey = actionKey;
Tag = tag;
}
}
/// <summary>
/// Event args for notification closed events.
/// </summary>
public class NotificationClosedEventArgs : EventArgs
{
public uint NotificationId { get; }
public NotificationCloseReason Reason { get; }
public string? Tag { get; }
public NotificationClosedEventArgs(uint notificationId, NotificationCloseReason reason, string? tag)
{
NotificationId = notificationId;
Reason = reason;
Tag = tag;
}
}
/// <summary>
/// Defines an action button for a notification.
/// </summary>
public class NotificationAction
{
/// <summary>
/// Internal action key (not displayed).
/// </summary>
public string Key { get; set; } = "";
/// <summary>
/// Display label for the action button.
/// </summary>
public string Label { get; set; } = "";
/// <summary>
/// Callback to invoke when the action is clicked.
/// </summary>
public Action? Callback { get; set; }
public NotificationAction() { }
public NotificationAction(string key, string label, Action? callback = null)
{
Key = key;
Label = label;
Callback = callback;
}
}

View File

@@ -1,479 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using Microsoft.Maui.Storage;
using System.Diagnostics;
using System.Text;
namespace Microsoft.Maui.Platform.Linux.Services;
/// <summary>
/// File picker service using xdg-desktop-portal for native dialogs.
/// Falls back to zenity/kdialog if portal is unavailable.
/// </summary>
public class PortalFilePickerService : IFilePicker
{
private bool _portalAvailable = true;
private string? _fallbackTool;
public PortalFilePickerService()
{
DetectAvailableTools();
}
private void DetectAvailableTools()
{
// Check if portal is available
_portalAvailable = CheckPortalAvailable();
if (!_portalAvailable)
{
// Check for fallback tools
if (IsCommandAvailable("zenity"))
_fallbackTool = "zenity";
else if (IsCommandAvailable("kdialog"))
_fallbackTool = "kdialog";
else if (IsCommandAvailable("yad"))
_fallbackTool = "yad";
}
}
private bool CheckPortalAvailable()
{
try
{
// Check if xdg-desktop-portal is running
var output = RunCommand("busctl", "--user list | grep -q org.freedesktop.portal.Desktop && echo yes");
return output.Trim() == "yes";
}
catch
{
return false;
}
}
private bool IsCommandAvailable(string command)
{
try
{
var output = RunCommand("which", command);
return !string.IsNullOrWhiteSpace(output);
}
catch
{
return false;
}
}
public async Task<FileResult?> PickAsync(PickOptions? options = null)
{
options ??= new PickOptions();
var results = await PickFilesAsync(options, allowMultiple: false);
return results.FirstOrDefault();
}
public async Task<IEnumerable<FileResult>> PickMultipleAsync(PickOptions? options = null)
{
options ??= new PickOptions();
return await PickFilesAsync(options, allowMultiple: true);
}
private async Task<IEnumerable<FileResult>> PickFilesAsync(PickOptions options, bool allowMultiple)
{
if (_portalAvailable)
{
return await PickWithPortalAsync(options, allowMultiple);
}
else if (_fallbackTool != null)
{
return await PickWithFallbackAsync(options, allowMultiple);
}
else
{
// No file picker available
Console.WriteLine("[FilePickerService] No file picker available (install xdg-desktop-portal, zenity, or kdialog)");
return Enumerable.Empty<FileResult>();
}
}
private async Task<IEnumerable<FileResult>> PickWithPortalAsync(PickOptions options, bool allowMultiple)
{
try
{
// Use gdbus to call the portal
var filterArgs = BuildPortalFilterArgs(options.FileTypes);
var multipleArg = allowMultiple ? "true" : "false";
var title = options.PickerTitle ?? "Open File";
// Build the D-Bus call
var args = new StringBuilder();
args.Append("call --session ");
args.Append("--dest org.freedesktop.portal.Desktop ");
args.Append("--object-path /org/freedesktop/portal/desktop ");
args.Append("--method org.freedesktop.portal.FileChooser.OpenFile ");
args.Append("\"\" "); // Parent window (empty for no parent)
args.Append($"\"{EscapeForShell(title)}\" "); // Title
// Options dictionary
args.Append("@a{sv} {");
args.Append($"'multiple': <{multipleArg}>");
if (filterArgs != null)
{
args.Append($", 'filters': <{filterArgs}>");
}
args.Append("}");
var output = await Task.Run(() => RunCommand("gdbus", args.ToString()));
// Parse the response to get the request path
// Response format: (objectpath '/org/freedesktop/portal/desktop/request/...',)
var requestPath = ParseRequestPath(output);
if (string.IsNullOrEmpty(requestPath))
{
return Enumerable.Empty<FileResult>();
}
// Wait for the response signal (simplified - in production use D-Bus signal subscription)
await Task.Delay(100);
// For now, fall back to synchronous zenity if portal response parsing is complex
if (_fallbackTool != null)
{
return await PickWithFallbackAsync(options, allowMultiple);
}
return Enumerable.Empty<FileResult>();
}
catch (Exception ex)
{
Console.WriteLine($"[FilePickerService] Portal error: {ex.Message}");
// Fall back to zenity/kdialog
if (_fallbackTool != null)
{
return await PickWithFallbackAsync(options, allowMultiple);
}
return Enumerable.Empty<FileResult>();
}
}
private async Task<IEnumerable<FileResult>> PickWithFallbackAsync(PickOptions options, bool allowMultiple)
{
return _fallbackTool switch
{
"zenity" => await PickWithZenityAsync(options, allowMultiple),
"kdialog" => await PickWithKdialogAsync(options, allowMultiple),
"yad" => await PickWithYadAsync(options, allowMultiple),
_ => Enumerable.Empty<FileResult>()
};
}
private async Task<IEnumerable<FileResult>> PickWithZenityAsync(PickOptions options, bool allowMultiple)
{
var args = new StringBuilder();
args.Append("--file-selection ");
if (!string.IsNullOrEmpty(options.PickerTitle))
{
args.Append($"--title=\"{EscapeForShell(options.PickerTitle)}\" ");
}
if (allowMultiple)
{
args.Append("--multiple --separator=\"|\" ");
}
// Add file filters from FilePickerFileType
var extensions = GetExtensionsFromFileType(options.FileTypes);
if (extensions.Count > 0)
{
var filterPattern = string.Join(" ", extensions.Select(e => $"*{e}"));
args.Append($"--file-filter=\"Files | {filterPattern}\" ");
}
var output = await Task.Run(() => RunCommand("zenity", args.ToString()));
if (string.IsNullOrWhiteSpace(output))
{
return Enumerable.Empty<FileResult>();
}
var files = output.Trim().Split('|', StringSplitOptions.RemoveEmptyEntries);
return files.Select(f => new FileResult(f.Trim())).ToList();
}
private async Task<IEnumerable<FileResult>> PickWithKdialogAsync(PickOptions options, bool allowMultiple)
{
var args = new StringBuilder();
args.Append("--getopenfilename ");
// Start directory
args.Append(". ");
// Add file filters
var extensions = GetExtensionsFromFileType(options.FileTypes);
if (extensions.Count > 0)
{
var filterPattern = string.Join(" ", extensions.Select(e => $"*{e}"));
args.Append($"\"Files ({filterPattern})\" ");
}
if (!string.IsNullOrEmpty(options.PickerTitle))
{
args.Append($"--title \"{EscapeForShell(options.PickerTitle)}\" ");
}
if (allowMultiple)
{
args.Append("--multiple --separate-output ");
}
var output = await Task.Run(() => RunCommand("kdialog", args.ToString()));
if (string.IsNullOrWhiteSpace(output))
{
return Enumerable.Empty<FileResult>();
}
var files = output.Trim().Split('\n', StringSplitOptions.RemoveEmptyEntries);
return files.Select(f => new FileResult(f.Trim())).ToList();
}
private async Task<IEnumerable<FileResult>> PickWithYadAsync(PickOptions options, bool allowMultiple)
{
// YAD is similar to zenity
var args = new StringBuilder();
args.Append("--file ");
if (!string.IsNullOrEmpty(options.PickerTitle))
{
args.Append($"--title=\"{EscapeForShell(options.PickerTitle)}\" ");
}
if (allowMultiple)
{
args.Append("--multiple --separator=\"|\" ");
}
var extensions = GetExtensionsFromFileType(options.FileTypes);
if (extensions.Count > 0)
{
var filterPattern = string.Join(" ", extensions.Select(e => $"*{e}"));
args.Append($"--file-filter=\"Files | {filterPattern}\" ");
}
var output = await Task.Run(() => RunCommand("yad", args.ToString()));
if (string.IsNullOrWhiteSpace(output))
{
return Enumerable.Empty<FileResult>();
}
var files = output.Trim().Split('|', StringSplitOptions.RemoveEmptyEntries);
return files.Select(f => new FileResult(f.Trim())).ToList();
}
/// <summary>
/// Extracts file extensions from a MAUI FilePickerFileType.
/// </summary>
private List<string> GetExtensionsFromFileType(FilePickerFileType? fileType)
{
var extensions = new List<string>();
if (fileType == null) return extensions;
try
{
// FilePickerFileType.Value is IEnumerable<string> for the current platform
var value = fileType.Value;
if (value == null) return extensions;
foreach (var ext in value)
{
// Skip MIME types, only take file extensions
if (ext.StartsWith(".") || (!ext.Contains('/') && !ext.Contains('*')))
{
var normalized = ext.StartsWith(".") ? ext : $".{ext}";
if (!extensions.Contains(normalized))
{
extensions.Add(normalized);
}
}
}
}
catch
{
// Silently fail if we can't parse the file type
}
return extensions;
}
private string? BuildPortalFilterArgs(FilePickerFileType? fileType)
{
var extensions = GetExtensionsFromFileType(fileType);
if (extensions.Count == 0)
return null;
var patterns = string.Join(", ", extensions.Select(e => $"(uint32 0, '*{e}')"));
return $"[('Files', [{patterns}])]";
}
private string? ParseRequestPath(string output)
{
// Parse D-Bus response like: (objectpath '/org/freedesktop/portal/desktop/request/...',)
var start = output.IndexOf("'/");
var end = output.IndexOf("',", start);
if (start >= 0 && end > start)
{
return output.Substring(start + 1, end - start - 1);
}
return null;
}
private string EscapeForShell(string input)
{
return input.Replace("\"", "\\\"").Replace("'", "\\'");
}
private string RunCommand(string command, string arguments)
{
try
{
using var process = new Process
{
StartInfo = new ProcessStartInfo
{
FileName = command,
Arguments = arguments,
RedirectStandardOutput = true,
RedirectStandardError = true,
UseShellExecute = false,
CreateNoWindow = true
}
};
process.Start();
var output = process.StandardOutput.ReadToEnd();
process.WaitForExit(30000);
return output;
}
catch (Exception ex)
{
Console.WriteLine($"[FilePickerService] Command error: {ex.Message}");
return "";
}
}
}
/// <summary>
/// Folder picker service using xdg-desktop-portal for native dialogs.
/// </summary>
public class PortalFolderPickerService
{
public async Task<FolderPickerResult> PickAsync(FolderPickerOptions? options = null, CancellationToken cancellationToken = default)
{
options ??= new FolderPickerOptions();
// Use zenity/kdialog for folder selection (simpler than portal)
string? selectedFolder = null;
if (IsCommandAvailable("zenity"))
{
var args = $"--file-selection --directory --title=\"{options.Title ?? "Select Folder"}\"";
selectedFolder = await Task.Run(() => RunCommand("zenity", args)?.Trim());
}
else if (IsCommandAvailable("kdialog"))
{
var args = $"--getexistingdirectory . --title \"{options.Title ?? "Select Folder"}\"";
selectedFolder = await Task.Run(() => RunCommand("kdialog", args)?.Trim());
}
if (!string.IsNullOrEmpty(selectedFolder) && Directory.Exists(selectedFolder))
{
return new FolderPickerResult(new FolderResult(selectedFolder));
}
return new FolderPickerResult(null);
}
public async Task<FolderPickerResult> PickAsync(CancellationToken cancellationToken = default)
{
return await PickAsync(null, cancellationToken);
}
private bool IsCommandAvailable(string command)
{
try
{
var output = RunCommand("which", command);
return !string.IsNullOrWhiteSpace(output);
}
catch
{
return false;
}
}
private string? RunCommand(string command, string arguments)
{
try
{
using var process = new Process
{
StartInfo = new ProcessStartInfo
{
FileName = command,
Arguments = arguments,
RedirectStandardOutput = true,
UseShellExecute = false,
CreateNoWindow = true
}
};
process.Start();
var output = process.StandardOutput.ReadToEnd();
process.WaitForExit(30000);
return output;
}
catch
{
return null;
}
}
}
/// <summary>
/// Result of a folder picker operation.
/// </summary>
public class FolderResult
{
public string Path { get; }
public string Name => System.IO.Path.GetFileName(Path) ?? Path;
public FolderResult(string path)
{
Path = path;
}
}
/// <summary>
/// Result wrapper for folder picker.
/// </summary>
public class FolderPickerResult
{
public FolderResult? Folder { get; }
public bool WasSuccessful => Folder != null;
public FolderPickerResult(FolderResult? folder)
{
Folder = folder;
}
}
/// <summary>
/// Options for folder picker.
/// </summary>
public class FolderPickerOptions
{
public string? Title { get; set; }
public string? InitialDirectory { get; set; }
}

View File

@@ -1,481 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using SkiaSharp;
using System.Diagnostics;
namespace Microsoft.Maui.Platform.Linux.Services;
/// <summary>
/// Detects and monitors system theme settings (dark/light mode, accent colors).
/// Supports GNOME, KDE, and GTK-based environments.
/// </summary>
public class SystemThemeService
{
private static SystemThemeService? _instance;
private static readonly object _lock = new();
/// <summary>
/// Gets the singleton instance of the system theme service.
/// </summary>
public static SystemThemeService Instance
{
get
{
if (_instance == null)
{
lock (_lock)
{
_instance ??= new SystemThemeService();
}
}
return _instance;
}
}
/// <summary>
/// The current system theme.
/// </summary>
public SystemTheme CurrentTheme { get; private set; } = SystemTheme.Light;
/// <summary>
/// The system accent color (if available).
/// </summary>
public SKColor AccentColor { get; private set; } = new SKColor(0x21, 0x96, 0xF3); // Default blue
/// <summary>
/// The detected desktop environment.
/// </summary>
public DesktopEnvironment Desktop { get; private set; } = DesktopEnvironment.Unknown;
/// <summary>
/// Event raised when the theme changes.
/// </summary>
public event EventHandler<ThemeChangedEventArgs>? ThemeChanged;
/// <summary>
/// System colors based on the current theme.
/// </summary>
public SystemColors Colors { get; private set; }
private FileSystemWatcher? _settingsWatcher;
private SystemThemeService()
{
DetectDesktopEnvironment();
DetectTheme();
UpdateColors();
SetupWatcher();
}
private void DetectDesktopEnvironment()
{
var xdgDesktop = Environment.GetEnvironmentVariable("XDG_CURRENT_DESKTOP")?.ToLowerInvariant() ?? "";
var desktopSession = Environment.GetEnvironmentVariable("DESKTOP_SESSION")?.ToLowerInvariant() ?? "";
if (xdgDesktop.Contains("gnome") || desktopSession.Contains("gnome"))
{
Desktop = DesktopEnvironment.GNOME;
}
else if (xdgDesktop.Contains("kde") || xdgDesktop.Contains("plasma") || desktopSession.Contains("plasma"))
{
Desktop = DesktopEnvironment.KDE;
}
else if (xdgDesktop.Contains("xfce") || desktopSession.Contains("xfce"))
{
Desktop = DesktopEnvironment.XFCE;
}
else if (xdgDesktop.Contains("mate") || desktopSession.Contains("mate"))
{
Desktop = DesktopEnvironment.MATE;
}
else if (xdgDesktop.Contains("cinnamon") || desktopSession.Contains("cinnamon"))
{
Desktop = DesktopEnvironment.Cinnamon;
}
else if (xdgDesktop.Contains("lxqt"))
{
Desktop = DesktopEnvironment.LXQt;
}
else if (xdgDesktop.Contains("lxde"))
{
Desktop = DesktopEnvironment.LXDE;
}
else
{
Desktop = DesktopEnvironment.Unknown;
}
}
private void DetectTheme()
{
var theme = Desktop switch
{
DesktopEnvironment.GNOME => DetectGnomeTheme(),
DesktopEnvironment.KDE => DetectKdeTheme(),
DesktopEnvironment.XFCE => DetectXfceTheme(),
DesktopEnvironment.Cinnamon => DetectCinnamonTheme(),
_ => DetectGtkTheme()
};
CurrentTheme = theme ?? SystemTheme.Light;
// Try to get accent color
AccentColor = Desktop switch
{
DesktopEnvironment.GNOME => GetGnomeAccentColor(),
DesktopEnvironment.KDE => GetKdeAccentColor(),
_ => new SKColor(0x21, 0x96, 0xF3)
};
}
private SystemTheme? DetectGnomeTheme()
{
try
{
// gsettings get org.gnome.desktop.interface color-scheme
var output = RunCommand("gsettings", "get org.gnome.desktop.interface color-scheme");
if (output.Contains("prefer-dark"))
return SystemTheme.Dark;
if (output.Contains("prefer-light") || output.Contains("default"))
return SystemTheme.Light;
// Fallback: check GTK theme name
output = RunCommand("gsettings", "get org.gnome.desktop.interface gtk-theme");
if (output.ToLowerInvariant().Contains("dark"))
return SystemTheme.Dark;
}
catch { }
return null;
}
private SystemTheme? DetectKdeTheme()
{
try
{
// Read ~/.config/kdeglobals
var configPath = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
".config", "kdeglobals");
if (File.Exists(configPath))
{
var content = File.ReadAllText(configPath);
// Look for ColorScheme or LookAndFeelPackage
if (content.Contains("BreezeDark", StringComparison.OrdinalIgnoreCase) ||
content.Contains("Dark", StringComparison.OrdinalIgnoreCase))
{
return SystemTheme.Dark;
}
}
}
catch { }
return null;
}
private SystemTheme? DetectXfceTheme()
{
try
{
var output = RunCommand("xfconf-query", "-c xsettings -p /Net/ThemeName");
if (output.ToLowerInvariant().Contains("dark"))
return SystemTheme.Dark;
}
catch { }
return DetectGtkTheme();
}
private SystemTheme? DetectCinnamonTheme()
{
try
{
var output = RunCommand("gsettings", "get org.cinnamon.desktop.interface gtk-theme");
if (output.ToLowerInvariant().Contains("dark"))
return SystemTheme.Dark;
}
catch { }
return null;
}
private SystemTheme? DetectGtkTheme()
{
try
{
// Try GTK3 settings
var configPath = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
".config", "gtk-3.0", "settings.ini");
if (File.Exists(configPath))
{
var content = File.ReadAllText(configPath);
var lines = content.Split('\n');
foreach (var line in lines)
{
if (line.StartsWith("gtk-theme-name=", StringComparison.OrdinalIgnoreCase))
{
var themeName = line.Substring("gtk-theme-name=".Length).Trim();
if (themeName.Contains("dark", StringComparison.OrdinalIgnoreCase))
return SystemTheme.Dark;
}
if (line.StartsWith("gtk-application-prefer-dark-theme=", StringComparison.OrdinalIgnoreCase))
{
var value = line.Substring("gtk-application-prefer-dark-theme=".Length).Trim();
if (value == "1" || value.Equals("true", StringComparison.OrdinalIgnoreCase))
return SystemTheme.Dark;
}
}
}
}
catch { }
return null;
}
private SKColor GetGnomeAccentColor()
{
try
{
var output = RunCommand("gsettings", "get org.gnome.desktop.interface accent-color");
// Returns something like 'blue', 'teal', 'green', etc.
return output.Trim().Trim('\'') switch
{
"blue" => new SKColor(0x35, 0x84, 0xe4),
"teal" => new SKColor(0x2a, 0xc3, 0xde),
"green" => new SKColor(0x3a, 0x94, 0x4a),
"yellow" => new SKColor(0xf6, 0xd3, 0x2d),
"orange" => new SKColor(0xff, 0x78, 0x00),
"red" => new SKColor(0xe0, 0x1b, 0x24),
"pink" => new SKColor(0xd6, 0x56, 0x8c),
"purple" => new SKColor(0x91, 0x41, 0xac),
"slate" => new SKColor(0x5e, 0x5c, 0x64),
_ => new SKColor(0x21, 0x96, 0xF3)
};
}
catch
{
return new SKColor(0x21, 0x96, 0xF3);
}
}
private SKColor GetKdeAccentColor()
{
try
{
var configPath = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
".config", "kdeglobals");
if (File.Exists(configPath))
{
var content = File.ReadAllText(configPath);
var lines = content.Split('\n');
bool inColorsHeader = false;
foreach (var line in lines)
{
if (line.StartsWith("[Colors:Header]"))
{
inColorsHeader = true;
continue;
}
if (line.StartsWith("[") && inColorsHeader)
{
break;
}
if (inColorsHeader && line.StartsWith("BackgroundNormal="))
{
var rgb = line.Substring("BackgroundNormal=".Length).Split(',');
if (rgb.Length >= 3 &&
byte.TryParse(rgb[0], out var r) &&
byte.TryParse(rgb[1], out var g) &&
byte.TryParse(rgb[2], out var b))
{
return new SKColor(r, g, b);
}
}
}
}
}
catch { }
return new SKColor(0x21, 0x96, 0xF3);
}
private void UpdateColors()
{
Colors = CurrentTheme == SystemTheme.Dark
? new SystemColors
{
Background = new SKColor(0x1e, 0x1e, 0x1e),
Surface = new SKColor(0x2d, 0x2d, 0x2d),
Primary = AccentColor,
OnPrimary = SKColors.White,
Text = new SKColor(0xf0, 0xf0, 0xf0),
TextSecondary = new SKColor(0xa0, 0xa0, 0xa0),
Border = new SKColor(0x40, 0x40, 0x40),
Divider = new SKColor(0x3a, 0x3a, 0x3a),
Error = new SKColor(0xcf, 0x66, 0x79),
Success = new SKColor(0x81, 0xc9, 0x95)
}
: new SystemColors
{
Background = new SKColor(0xfa, 0xfa, 0xfa),
Surface = SKColors.White,
Primary = AccentColor,
OnPrimary = SKColors.White,
Text = new SKColor(0x21, 0x21, 0x21),
TextSecondary = new SKColor(0x75, 0x75, 0x75),
Border = new SKColor(0xe0, 0xe0, 0xe0),
Divider = new SKColor(0xee, 0xee, 0xee),
Error = new SKColor(0xb0, 0x00, 0x20),
Success = new SKColor(0x2e, 0x7d, 0x32)
};
}
private void SetupWatcher()
{
try
{
var configDir = Path.Combine(
Environment.GetFolderPath(Environment.SpecialFolder.UserProfile),
".config");
if (Directory.Exists(configDir))
{
_settingsWatcher = new FileSystemWatcher(configDir)
{
NotifyFilter = NotifyFilters.LastWrite,
IncludeSubdirectories = true,
EnableRaisingEvents = true
};
_settingsWatcher.Changed += OnSettingsChanged;
}
}
catch { }
}
private void OnSettingsChanged(object sender, FileSystemEventArgs e)
{
// Debounce and check relevant files
if (e.Name?.Contains("kdeglobals") == true ||
e.Name?.Contains("gtk") == true ||
e.Name?.Contains("settings") == true)
{
// Re-detect theme after a short delay
Task.Delay(500).ContinueWith(_ =>
{
var oldTheme = CurrentTheme;
DetectTheme();
UpdateColors();
if (oldTheme != CurrentTheme)
{
ThemeChanged?.Invoke(this, new ThemeChangedEventArgs(CurrentTheme));
}
});
}
}
private string RunCommand(string command, string arguments)
{
try
{
using var process = new Process
{
StartInfo = new ProcessStartInfo
{
FileName = command,
Arguments = arguments,
RedirectStandardOutput = true,
UseShellExecute = false,
CreateNoWindow = true
}
};
process.Start();
var output = process.StandardOutput.ReadToEnd();
process.WaitForExit(1000);
return output;
}
catch
{
return "";
}
}
/// <summary>
/// Forces a theme refresh.
/// </summary>
public void RefreshTheme()
{
var oldTheme = CurrentTheme;
DetectTheme();
UpdateColors();
if (oldTheme != CurrentTheme)
{
ThemeChanged?.Invoke(this, new ThemeChangedEventArgs(CurrentTheme));
}
}
}
/// <summary>
/// System theme (light or dark mode).
/// </summary>
public enum SystemTheme
{
Light,
Dark
}
/// <summary>
/// Detected desktop environment.
/// </summary>
public enum DesktopEnvironment
{
Unknown,
GNOME,
KDE,
XFCE,
MATE,
Cinnamon,
LXQt,
LXDE
}
/// <summary>
/// Event args for theme changes.
/// </summary>
public class ThemeChangedEventArgs : EventArgs
{
public SystemTheme NewTheme { get; }
public ThemeChangedEventArgs(SystemTheme newTheme)
{
NewTheme = newTheme;
}
}
/// <summary>
/// System colors based on the current theme.
/// </summary>
public class SystemColors
{
public SKColor Background { get; init; }
public SKColor Surface { get; init; }
public SKColor Primary { get; init; }
public SKColor OnPrimary { get; init; }
public SKColor Text { get; init; }
public SKColor TextSecondary { get; init; }
public SKColor Border { get; init; }
public SKColor Divider { get; init; }
public SKColor Error { get; init; }
public SKColor Success { get; init; }
}

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@@ -1,307 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using SkiaSharp;
namespace Microsoft.Maui.Platform.Linux.Services;
/// <summary>
/// Manages view recycling for virtualized lists and collections.
/// Implements a pool-based recycling strategy to minimize allocations.
/// </summary>
public class VirtualizationManager<T> where T : SkiaView
{
private readonly Dictionary<int, T> _activeViews = new();
private readonly Queue<T> _recyclePool = new();
private readonly Func<T> _viewFactory;
private readonly Action<T>? _viewRecycler;
private readonly int _maxPoolSize;
private int _firstVisibleIndex = -1;
private int _lastVisibleIndex = -1;
/// <summary>
/// Number of views currently active (bound to data).
/// </summary>
public int ActiveViewCount => _activeViews.Count;
/// <summary>
/// Number of views in the recycle pool.
/// </summary>
public int PooledViewCount => _recyclePool.Count;
/// <summary>
/// Current visible range.
/// </summary>
public (int First, int Last) VisibleRange => (_firstVisibleIndex, _lastVisibleIndex);
/// <summary>
/// Creates a new virtualization manager.
/// </summary>
/// <param name="viewFactory">Factory function to create new views.</param>
/// <param name="viewRecycler">Optional function to reset views before recycling.</param>
/// <param name="maxPoolSize">Maximum number of views to keep in the recycle pool.</param>
public VirtualizationManager(
Func<T> viewFactory,
Action<T>? viewRecycler = null,
int maxPoolSize = 20)
{
_viewFactory = viewFactory ?? throw new ArgumentNullException(nameof(viewFactory));
_viewRecycler = viewRecycler;
_maxPoolSize = maxPoolSize;
}
/// <summary>
/// Updates the visible range and recycles views that scrolled out of view.
/// </summary>
/// <param name="firstVisible">Index of first visible item.</param>
/// <param name="lastVisible">Index of last visible item.</param>
public void UpdateVisibleRange(int firstVisible, int lastVisible)
{
if (firstVisible == _firstVisibleIndex && lastVisible == _lastVisibleIndex)
return;
// Recycle views that scrolled out of view
var toRecycle = new List<int>();
foreach (var kvp in _activeViews)
{
if (kvp.Key < firstVisible || kvp.Key > lastVisible)
{
toRecycle.Add(kvp.Key);
}
}
foreach (var index in toRecycle)
{
RecycleView(index);
}
_firstVisibleIndex = firstVisible;
_lastVisibleIndex = lastVisible;
}
/// <summary>
/// Gets or creates a view for the specified index.
/// </summary>
/// <param name="index">Item index.</param>
/// <param name="bindData">Action to bind data to the view.</param>
/// <returns>A view bound to the data.</returns>
public T GetOrCreateView(int index, Action<T> bindData)
{
if (_activeViews.TryGetValue(index, out var existing))
{
return existing;
}
// Get from pool or create new
T view;
if (_recyclePool.Count > 0)
{
view = _recyclePool.Dequeue();
}
else
{
view = _viewFactory();
}
// Bind data
bindData(view);
_activeViews[index] = view;
return view;
}
/// <summary>
/// Gets an existing view for the index, or null if not active.
/// </summary>
public T? GetActiveView(int index)
{
return _activeViews.TryGetValue(index, out var view) ? view : default;
}
/// <summary>
/// Recycles a view at the specified index.
/// </summary>
private void RecycleView(int index)
{
if (!_activeViews.TryGetValue(index, out var view))
return;
_activeViews.Remove(index);
// Reset the view
_viewRecycler?.Invoke(view);
// Add to pool if not full
if (_recyclePool.Count < _maxPoolSize)
{
_recyclePool.Enqueue(view);
}
else
{
// Pool is full, dispose the view
view.Dispose();
}
}
/// <summary>
/// Clears all active views and the recycle pool.
/// </summary>
public void Clear()
{
foreach (var view in _activeViews.Values)
{
view.Dispose();
}
_activeViews.Clear();
while (_recyclePool.Count > 0)
{
_recyclePool.Dequeue().Dispose();
}
_firstVisibleIndex = -1;
_lastVisibleIndex = -1;
}
/// <summary>
/// Removes a specific item and recycles its view.
/// </summary>
public void RemoveItem(int index)
{
RecycleView(index);
// Shift indices for items after the removed one
var toShift = _activeViews
.Where(kvp => kvp.Key > index)
.OrderBy(kvp => kvp.Key)
.ToList();
foreach (var kvp in toShift)
{
_activeViews.Remove(kvp.Key);
_activeViews[kvp.Key - 1] = kvp.Value;
}
}
/// <summary>
/// Inserts an item and shifts existing indices.
/// </summary>
public void InsertItem(int index)
{
// Shift indices for items at or after the insert position
var toShift = _activeViews
.Where(kvp => kvp.Key >= index)
.OrderByDescending(kvp => kvp.Key)
.ToList();
foreach (var kvp in toShift)
{
_activeViews.Remove(kvp.Key);
_activeViews[kvp.Key + 1] = kvp.Value;
}
}
}
/// <summary>
/// Extension methods for virtualization.
/// </summary>
public static class VirtualizationExtensions
{
/// <summary>
/// Calculates visible item range for a vertical list.
/// </summary>
/// <param name="scrollOffset">Current scroll offset.</param>
/// <param name="viewportHeight">Height of visible area.</param>
/// <param name="itemHeight">Height of each item (fixed).</param>
/// <param name="itemSpacing">Spacing between items.</param>
/// <param name="totalItems">Total number of items.</param>
/// <returns>Tuple of (firstVisible, lastVisible) indices.</returns>
public static (int first, int last) CalculateVisibleRange(
float scrollOffset,
float viewportHeight,
float itemHeight,
float itemSpacing,
int totalItems)
{
if (totalItems == 0)
return (-1, -1);
var rowHeight = itemHeight + itemSpacing;
var first = Math.Max(0, (int)(scrollOffset / rowHeight));
var last = Math.Min(totalItems - 1, (int)((scrollOffset + viewportHeight) / rowHeight) + 1);
return (first, last);
}
/// <summary>
/// Calculates visible item range for variable height items.
/// </summary>
/// <param name="scrollOffset">Current scroll offset.</param>
/// <param name="viewportHeight">Height of visible area.</param>
/// <param name="getItemHeight">Function to get height of item at index.</param>
/// <param name="itemSpacing">Spacing between items.</param>
/// <param name="totalItems">Total number of items.</param>
/// <returns>Tuple of (firstVisible, lastVisible) indices.</returns>
public static (int first, int last) CalculateVisibleRangeVariable(
float scrollOffset,
float viewportHeight,
Func<int, float> getItemHeight,
float itemSpacing,
int totalItems)
{
if (totalItems == 0)
return (-1, -1);
int first = 0;
float cumulativeHeight = 0;
// Find first visible
for (int i = 0; i < totalItems; i++)
{
var itemHeight = getItemHeight(i);
if (cumulativeHeight + itemHeight > scrollOffset)
{
first = i;
break;
}
cumulativeHeight += itemHeight + itemSpacing;
}
// Find last visible
int last = first;
var endOffset = scrollOffset + viewportHeight;
for (int i = first; i < totalItems; i++)
{
var itemHeight = getItemHeight(i);
if (cumulativeHeight > endOffset)
{
break;
}
last = i;
cumulativeHeight += itemHeight + itemSpacing;
}
return (first, last);
}
/// <summary>
/// Calculates visible item range for a grid layout.
/// </summary>
public static (int firstRow, int lastRow) CalculateVisibleGridRange(
float scrollOffset,
float viewportHeight,
float rowHeight,
float rowSpacing,
int totalRows)
{
if (totalRows == 0)
return (-1, -1);
var effectiveRowHeight = rowHeight + rowSpacing;
var first = Math.Max(0, (int)(scrollOffset / effectiveRowHeight));
var last = Math.Min(totalRows - 1, (int)((scrollOffset + viewportHeight) / effectiveRowHeight) + 1);
return (first, last);
}
}

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@@ -1,490 +0,0 @@
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
using Microsoft.Maui.Platform.Linux.Interop;
using SkiaSharp;
namespace Microsoft.Maui.Platform;
/// <summary>
/// Linux platform WebView using WebKitGTK.
/// This is a native widget overlay that renders on top of the Skia surface.
/// </summary>
public class LinuxWebView : SkiaView
{
private IntPtr _webView;
private IntPtr _gtkWindow;
private bool _initialized;
private bool _isVisible = true;
private string? _currentUrl;
private string? _userAgent;
// Signal handler IDs for cleanup
private ulong _loadChangedHandlerId;
private ulong _decidePolicyHandlerId;
private ulong _titleChangedHandlerId;
// Keep delegates alive to prevent GC
private WebKitGtk.LoadChangedCallback? _loadChangedCallback;
private WebKitGtk.DecidePolicyCallback? _decidePolicyCallback;
private WebKitGtk.NotifyCallback? _titleChangedCallback;
/// <summary>
/// Event raised when navigation starts.
/// </summary>
public event EventHandler<WebViewNavigatingEventArgs>? Navigating;
/// <summary>
/// Event raised when navigation completes.
/// </summary>
public event EventHandler<WebViewNavigatedEventArgs>? Navigated;
/// <summary>
/// Event raised when the page title changes.
/// </summary>
public event EventHandler<string?>? TitleChanged;
/// <summary>
/// Gets whether the WebView can navigate back.
/// </summary>
public bool CanGoBack => _webView != IntPtr.Zero && WebKitGtk.webkit_web_view_can_go_back(_webView);
/// <summary>
/// Gets whether the WebView can navigate forward.
/// </summary>
public bool CanGoForward => _webView != IntPtr.Zero && WebKitGtk.webkit_web_view_can_go_forward(_webView);
/// <summary>
/// Gets the current URL.
/// </summary>
public string? CurrentUrl
{
get
{
if (_webView == IntPtr.Zero)
return _currentUrl;
var uriPtr = WebKitGtk.webkit_web_view_get_uri(_webView);
return WebKitGtk.PtrToStringUtf8(uriPtr) ?? _currentUrl;
}
}
/// <summary>
/// Gets or sets the user agent string.
/// </summary>
public string? UserAgent
{
get => _userAgent;
set
{
_userAgent = value;
if (_webView != IntPtr.Zero && value != null)
{
var settings = WebKitGtk.webkit_web_view_get_settings(_webView);
WebKitGtk.webkit_settings_set_user_agent(settings, value);
}
}
}
public LinuxWebView()
{
// WebView will be initialized when first shown or when source is set
}
/// <summary>
/// Initializes the WebKitGTK WebView.
/// </summary>
private void EnsureInitialized()
{
if (_initialized)
return;
try
{
// Initialize GTK if not already done
int argc = 0;
IntPtr argv = IntPtr.Zero;
WebKitGtk.gtk_init_check(ref argc, ref argv);
// Create a top-level window to host the WebView
// GTK_WINDOW_TOPLEVEL = 0
_gtkWindow = WebKitGtk.gtk_window_new(0);
if (_gtkWindow == IntPtr.Zero)
{
Console.WriteLine("[LinuxWebView] Failed to create GTK window");
return;
}
// Configure the window
WebKitGtk.gtk_window_set_decorated(_gtkWindow, false);
WebKitGtk.gtk_widget_set_can_focus(_gtkWindow, true);
// Create the WebKit WebView
_webView = WebKitGtk.webkit_web_view_new();
if (_webView == IntPtr.Zero)
{
Console.WriteLine("[LinuxWebView] Failed to create WebKit WebView");
WebKitGtk.gtk_widget_destroy(_gtkWindow);
_gtkWindow = IntPtr.Zero;
return;
}
// Configure settings
var settings = WebKitGtk.webkit_web_view_get_settings(_webView);
WebKitGtk.webkit_settings_set_enable_javascript(settings, true);
WebKitGtk.webkit_settings_set_enable_webgl(settings, true);
WebKitGtk.webkit_settings_set_enable_developer_extras(settings, true);
WebKitGtk.webkit_settings_set_javascript_can_access_clipboard(settings, true);
if (_userAgent != null)
{
WebKitGtk.webkit_settings_set_user_agent(settings, _userAgent);
}
// Connect signals
ConnectSignals();
// Add WebView to window
WebKitGtk.gtk_container_add(_gtkWindow, _webView);
_initialized = true;
Console.WriteLine("[LinuxWebView] WebKitGTK WebView initialized successfully");
}
catch (Exception ex)
{
Console.WriteLine($"[LinuxWebView] Initialization failed: {ex.Message}");
Console.WriteLine($"[LinuxWebView] Make sure WebKitGTK is installed: sudo apt install libwebkit2gtk-4.1-0");
}
}
private void ConnectSignals()
{
// Keep callbacks alive
_loadChangedCallback = OnLoadChanged;
_decidePolicyCallback = OnDecidePolicy;
_titleChangedCallback = OnTitleChanged;
// Connect load-changed signal
_loadChangedHandlerId = WebKitGtk.g_signal_connect_data(
_webView, "load-changed", _loadChangedCallback, IntPtr.Zero, IntPtr.Zero, 0);
// Connect decide-policy signal for navigation control
_decidePolicyHandlerId = WebKitGtk.g_signal_connect_data(
_webView, "decide-policy", _decidePolicyCallback, IntPtr.Zero, IntPtr.Zero, 0);
// Connect notify::title for title changes
_titleChangedHandlerId = WebKitGtk.g_signal_connect_data(
_webView, "notify::title", _titleChangedCallback, IntPtr.Zero, IntPtr.Zero, 0);
}
private void OnLoadChanged(IntPtr webView, int loadEvent, IntPtr userData)
{
var url = CurrentUrl ?? "";
switch (loadEvent)
{
case WebKitGtk.WEBKIT_LOAD_STARTED:
case WebKitGtk.WEBKIT_LOAD_REDIRECTED:
Navigating?.Invoke(this, new WebViewNavigatingEventArgs(url));
break;
case WebKitGtk.WEBKIT_LOAD_FINISHED:
Navigated?.Invoke(this, new WebViewNavigatedEventArgs(url, true));
break;
case WebKitGtk.WEBKIT_LOAD_COMMITTED:
// Page content has started loading
break;
}
}
private bool OnDecidePolicy(IntPtr webView, IntPtr decision, int decisionType, IntPtr userData)
{
if (decisionType == WebKitGtk.WEBKIT_POLICY_DECISION_TYPE_NAVIGATION_ACTION)
{
var action = WebKitGtk.webkit_navigation_action_get_request(decision);
var uriPtr = WebKitGtk.webkit_uri_request_get_uri(action);
var url = WebKitGtk.PtrToStringUtf8(uriPtr) ?? "";
var args = new WebViewNavigatingEventArgs(url);
Navigating?.Invoke(this, args);
if (args.Cancel)
{
WebKitGtk.webkit_policy_decision_ignore(decision);
return true;
}
}
WebKitGtk.webkit_policy_decision_use(decision);
return true;
}
private void OnTitleChanged(IntPtr webView, IntPtr paramSpec, IntPtr userData)
{
var titlePtr = WebKitGtk.webkit_web_view_get_title(_webView);
var title = WebKitGtk.PtrToStringUtf8(titlePtr);
TitleChanged?.Invoke(this, title);
}
/// <summary>
/// Navigates to the specified URL.
/// </summary>
public void LoadUrl(string url)
{
EnsureInitialized();
if (_webView == IntPtr.Zero)
return;
_currentUrl = url;
WebKitGtk.webkit_web_view_load_uri(_webView, url);
UpdateWindowPosition();
ShowWebView();
}
/// <summary>
/// Loads HTML content.
/// </summary>
public void LoadHtml(string html, string? baseUrl = null)
{
EnsureInitialized();
if (_webView == IntPtr.Zero)
return;
WebKitGtk.webkit_web_view_load_html(_webView, html, baseUrl);
UpdateWindowPosition();
ShowWebView();
}
/// <summary>
/// Navigates back in history.
/// </summary>
public void GoBack()
{
if (_webView != IntPtr.Zero && CanGoBack)
{
WebKitGtk.webkit_web_view_go_back(_webView);
}
}
/// <summary>
/// Navigates forward in history.
/// </summary>
public void GoForward()
{
if (_webView != IntPtr.Zero && CanGoForward)
{
WebKitGtk.webkit_web_view_go_forward(_webView);
}
}
/// <summary>
/// Reloads the current page.
/// </summary>
public void Reload()
{
if (_webView != IntPtr.Zero)
{
WebKitGtk.webkit_web_view_reload(_webView);
}
}
/// <summary>
/// Stops loading the current page.
/// </summary>
public void Stop()
{
if (_webView != IntPtr.Zero)
{
WebKitGtk.webkit_web_view_stop_loading(_webView);
}
}
/// <summary>
/// Evaluates JavaScript and returns the result.
/// </summary>
public Task<string?> EvaluateJavaScriptAsync(string script)
{
var tcs = new TaskCompletionSource<string?>();
if (_webView == IntPtr.Zero)
{
tcs.SetResult(null);
return tcs.Task;
}
// For now, use fire-and-forget JavaScript execution
// Full async result handling requires GAsyncReadyCallback marshaling
WebKitGtk.webkit_web_view_run_javascript(_webView, script, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
tcs.SetResult(null); // Return null for now, full implementation needs async callback
return tcs.Task;
}
/// <summary>
/// Evaluates JavaScript without waiting for result.
/// </summary>
public void Eval(string script)
{
if (_webView != IntPtr.Zero)
{
WebKitGtk.webkit_web_view_run_javascript(_webView, script, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
}
}
private void ShowWebView()
{
if (_gtkWindow != IntPtr.Zero && _isVisible)
{
WebKitGtk.gtk_widget_show_all(_gtkWindow);
}
}
private void HideWebView()
{
if (_gtkWindow != IntPtr.Zero)
{
WebKitGtk.gtk_widget_hide(_gtkWindow);
}
}
private void UpdateWindowPosition()
{
if (_gtkWindow == IntPtr.Zero)
return;
// Get the screen position of this view's bounds
var bounds = Bounds;
var screenX = (int)bounds.Left;
var screenY = (int)bounds.Top;
var width = (int)bounds.Width;
var height = (int)bounds.Height;
if (width > 0 && height > 0)
{
WebKitGtk.gtk_window_move(_gtkWindow, screenX, screenY);
WebKitGtk.gtk_window_resize(_gtkWindow, width, height);
}
}
protected override void OnBoundsChanged()
{
base.OnBoundsChanged();
UpdateWindowPosition();
}
protected override void OnVisibilityChanged()
{
base.OnVisibilityChanged();
_isVisible = IsVisible;
if (_isVisible)
{
ShowWebView();
}
else
{
HideWebView();
}
}
protected override void OnDraw(SKCanvas canvas, SKRect bounds)
{
// Draw a placeholder rectangle where the WebView will be overlaid
using var paint = new SKPaint
{
Color = new SKColor(240, 240, 240),
Style = SKPaintStyle.Fill
};
canvas.DrawRect(bounds, paint);
// Draw border
using var borderPaint = new SKPaint
{
Color = new SKColor(200, 200, 200),
Style = SKPaintStyle.Stroke,
StrokeWidth = 1
};
canvas.DrawRect(bounds, borderPaint);
// Draw "WebView" label if not yet initialized
if (!_initialized)
{
using var textPaint = new SKPaint
{
Color = SKColors.Gray,
TextSize = 14,
IsAntialias = true
};
var text = "WebView (WebKitGTK)";
var textBounds = new SKRect();
textPaint.MeasureText(text, ref textBounds);
var x = bounds.MidX - textBounds.MidX;
var y = bounds.MidY - textBounds.MidY;
canvas.DrawText(text, x, y, textPaint);
}
// Process GTK events to keep WebView responsive
WebKitGtk.ProcessGtkEvents();
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
// Disconnect signals
if (_webView != IntPtr.Zero)
{
if (_loadChangedHandlerId != 0)
WebKitGtk.g_signal_handler_disconnect(_webView, _loadChangedHandlerId);
if (_decidePolicyHandlerId != 0)
WebKitGtk.g_signal_handler_disconnect(_webView, _decidePolicyHandlerId);
if (_titleChangedHandlerId != 0)
WebKitGtk.g_signal_handler_disconnect(_webView, _titleChangedHandlerId);
}
// Destroy widgets
if (_gtkWindow != IntPtr.Zero)
{
WebKitGtk.gtk_widget_destroy(_gtkWindow);
_gtkWindow = IntPtr.Zero;
_webView = IntPtr.Zero; // WebView is destroyed with window
}
_loadChangedCallback = null;
_decidePolicyCallback = null;
_titleChangedCallback = null;
}
base.Dispose(disposing);
}
}
/// <summary>
/// Event args for WebView navigation starting.
/// </summary>
public class WebViewNavigatingEventArgs : EventArgs
{
public string Url { get; }
public bool Cancel { get; set; }
public WebViewNavigatingEventArgs(string url)
{
Url = url;
}
}
/// <summary>
/// Event args for WebView navigation completed.
/// </summary>
public class WebViewNavigatedEventArgs : EventArgs
{
public string Url { get; }
public bool Success { get; }
public WebViewNavigatedEventArgs(string url, bool success)
{
Url = url;
Success = success;
}
}

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#!/usr/bin/env python3
"""Fix decompiler artifacts in C# files."""
import re
import sys
import os
def fix_file(filepath):
with open(filepath, 'r') as f:
content = f.read()
original = content
# Pattern 1: Fix ((Type)(ref var))._002Ector(args) on same line as declaration
# Pattern: Type var = default(Type); followed by ((Type)(ref var))._002Ector(args);
# Combine: Type var = default(Type); + var._002Ector(args) -> Type var = new Type(args);
# First, fix the _002Ector pattern to use "new Type(...)"
# Pattern: ((TypeName)(ref varName))._002Ector(args);
pattern_ctor = r'\(\((SK\w+|SKRect|SKSize|SKPoint|SKColor|Thickness|Font|LayoutOptions|SKFontMetrics|RectF|Rect)\)\(ref\s+(\w+)\)\)\._002Ector\(([^;]+)\);'
def replace_ctor(match):
type_name = match.group(1)
var_name = match.group(2)
args = match.group(3)
return f'{var_name} = new {type_name}({args});'
content = re.sub(pattern_ctor, replace_ctor, content)
# Also handle simpler pattern: var._002Ector(args);
pattern_simple = r'(\w+)\._002Ector\(([^;]+)\);'
def replace_simple(match):
var_name = match.group(1)
args = match.group(2)
# We need to figure out the type from context - look for declaration
return f'// FIXME: {var_name} = new TYPE({args});'
# Don't do the simple pattern - it's harder to fix without knowing the type
# Pattern 2: Fix _003F (which is just ?)
content = content.replace('_003F', '?')
# Pattern 2.5: Fix broken nullable cast patterns
# (((??)something) ?? fallback) -> (something ?? fallback)
content = re.sub(r'\(\(\(\?\?\)(\w+\.\w+)\)', r'(\1', content)
content = content.replace('((?)', '((') # Fix broken nullable casts
content = content.replace('(?))', '))') # Fix broken casts
# Pattern 3: Clean up remaining ((Type)(ref var)) patterns without _002Ector
# These become just var
# First handle more types: Font, Thickness, Color, LayoutOptions, GridLength, etc.
types_to_fix = r'SK\w+|Font|Thickness|Color|LayoutOptions|SKFontMetrics|Rectangle|Point|Size|Rect|GridLength|GRGlFramebufferInfo|CornerRadius|RectF'
pattern_ref = r'\(\((' + types_to_fix + r')\)\(ref\s+(\w+)\)\)'
content = re.sub(pattern_ref, r'\2', content)
# Pattern 3.5: Handle static property refs like ((SKColor)(ref SKColors.White))
pattern_static_ref = r'\(\((' + types_to_fix + r')\)\(ref\s+(\w+\.\w+)\)\)'
content = re.sub(pattern_static_ref, r'\2', content)
# Pattern 4: Also handle ViewHandler casts like ((ViewHandler<ISearchBar, SkiaSearchBar>)(object)handler)
# This should stay as-is but the inner (ref x) needs fixing first
# Pattern 5: Fix simple (ref var) that might appear in other contexts
# Pattern: (ref varName) when standalone (not in a cast)
# Skip for now as this could break valid ref usage
if content != original:
with open(filepath, 'w') as f:
f.write(content)
return True
return False
def main():
base_dir = '/Users/nible/Documents/GitHub/maui-linux-main'
count = 0
for root, dirs, files in os.walk(base_dir):
# Skip hidden dirs and .git
dirs[:] = [d for d in dirs if not d.startswith('.')]
for fname in files:
if fname.endswith('.cs'):
filepath = os.path.join(root, fname)
if fix_file(filepath):
print(f'Fixed: {filepath}')
count += 1
print(f'Fixed {count} files')
if __name__ == '__main__':
main()

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# Fix Fuckup Recovery Plan
## What Happened
Code was stored in /tmp directory which got cleared on restart. Recovered code from decompiled VM binaries.
## What Was Lost
The decompiled code has all the **logic** but:
1. **XAML files are gone** - they were compiled to C# code
2. **AppThemeBinding additions** - dark/light mode XAML bindings
3. **Original formatting/comments** - decompiler output is messy
## Recovery Order
### Step 1: Fix maui-linux Library First
The library code is recovered and functional. Build and verify:
```bash
cd ~/Documents/GitHub/maui-linux-main
dotnet build
```
### Step 2: Recreate Sample XAML with AppThemeBinding
#### ShellDemo XAML to Recreate
All pages had AppThemeBinding added for dark/light mode:
- [ ] **AppShell.xaml** - FlyoutHeader with:
- VerticalStackLayout (logo above text)
- Image with AspectFit
- BackgroundColor: `{AppThemeBinding Light=#F0F0F0, Dark=#2A2A2A}`
- TextColor bindings for labels
- [ ] **HomePage.xaml** - AppThemeBinding for:
- BackgroundColor
- TextColor
- Button colors
- [ ] **ButtonsPage.xaml** - AppThemeBinding colors
- [ ] **TextInputPage.xaml** - Entry/Editor theme colors
- [ ] **PickersPage.xaml** - Picker theme colors
- [ ] **ProgressPage.xaml** - ProgressBar theme colors
- [ ] **SelectionPage.xaml** - CheckBox/Switch theme colors
- [ ] **ListsPage.xaml** - CollectionView theme colors
- [ ] **GridsPage.xaml** - Grid theme colors
- [ ] **AboutPage.xaml** - Links with tap gestures, theme colors
- [ ] **DetailPage.xaml** - Theme colors
#### TodoApp XAML to Recreate
- [ ] **TodoListPage.xaml** - AppThemeBinding for:
- Page background
- List item colors
- Button colors
- [ ] **TodoDetailPage.xaml** - Theme colors
- [ ] **NewTodoPage.xaml** - Theme colors
#### XamlBrowser XAML to Recreate
- [ ] **MainPage.xaml** - WebView container with theme
## AppThemeBinding Pattern
All XAML used this pattern:
```xml
<Label TextColor="{AppThemeBinding Light=#333333, Dark=#E0E0E0}" />
<Grid BackgroundColor="{AppThemeBinding Light=#FFFFFF, Dark=#1E1E1E}" />
<Button BackgroundColor="{AppThemeBinding Light=#2196F3, Dark=#1976D2}" />
```
## FlyoutHeader Specifics
The FlyoutHeader had this structure:
```xml
<Shell.FlyoutHeader>
<Grid BackgroundColor="{AppThemeBinding Light=#F0F0F0, Dark=#2A2A2A}"
HeightRequest="160"
Padding="15">
<VerticalStackLayout VerticalOptions="Center"
HorizontalOptions="Center"
Spacing="8">
<Image Source="openmaui_logo.svg"
WidthRequest="70"
HeightRequest="70"
Aspect="AspectFit"/>
<Label Text="OpenMaui"
FontSize="20"
FontAttributes="Bold"
HorizontalOptions="Center"
TextColor="{AppThemeBinding Light=#333333, Dark=#E0E0E0}"/>
<Label Text="Controls Demo"
FontSize="12"
HorizontalOptions="Center"
TextColor="{AppThemeBinding Light=#666666, Dark=#B0B0B0}"/>
</VerticalStackLayout>
</Grid>
</Shell.FlyoutHeader>
```
## Screenshots Needed
User can take screenshots of running app to recreate XAML:
1. **ShellDemo Flyout open** - Light mode
2. **ShellDemo Flyout open** - Dark mode
3. **Each page** - Light and dark mode
4. **TodoApp** - Light and dark mode
## Key Features Recovered in Library
### SkiaShell (1325 lines)
- [x] FlyoutHeaderView, FlyoutHeaderHeight
- [x] FlyoutFooterText, FlyoutFooterHeight
- [x] Flyout scrolling
- [x] All BindableProperties for theming
### X11Window
- [x] Cursor support (XCreateFontCursor, XDefineCursor)
- [x] CursorType enum
### Theme Support
- [x] SystemThemeService
- [x] UserAppTheme detection
- [x] Theme-aware handlers
## File Locations
| Item | Path |
|------|------|
| Library | `~/Documents/GitHub/maui-linux-main` |
| Samples | `~/Documents/GitHub/maui-linux-samples-main` |
| Recovered backup | `~/Documents/GitHub/recovered/` |
## Build & Deploy Commands
```bash
# Build library
cd ~/Documents/GitHub/maui-linux-main
dotnet build
# Build ShellDemo
cd ~/Documents/GitHub/maui-linux-samples-main/ShellDemo
dotnet publish -c Release -r linux-arm64 --self-contained
# Deploy
sshpass -p Basilisk scp -r bin/Release/net9.0/linux-arm64/publish/* marketally@172.16.1.128:~/shelltest/
# Run
sshpass -p Basilisk ssh marketally@172.16.1.128 "cd ~/shelltest && DISPLAY=:0 XAUTHORITY=/run/user/1000/.mutter-Xwaylandauth.* ./ShellDemo"
```
## CRITICAL RULES
1. **NEVER use /tmp** - always use ~/Documents/GitHub/
2. **Commit and push after EVERY significant change**
3. **Only push to dev branch** - main has CI/CD actions