Initial commit: .NET MAUI Linux Platform

Complete Linux platform implementation for .NET MAUI with: - 35+ Skia-rendered controls (Button, Label, Entry, CarouselView, etc.) - Platform services (Clipboard, FilePicker, Notifications, DragDrop, etc.) - Accessibility support (AT-SPI2, High Contrast) - HiDPI and Input Method support - 216 unit tests - CI/CD workflows - Project templates - Documentation 🤖 Generated with Claude Code
2025-12-19 09:30:16 +00:00
commit d87124fef2
138 changed files with 32939 additions and 0 deletions
--- a/Handlers/PickerHandler.cs
+++ b/Handlers/PickerHandler.cs
@@ -0,0 +1,133 @@
+// 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;
+using Microsoft.Maui.Graphics;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Platform;
+using SkiaSharp;
+
+namespace Microsoft.Maui.Platform.Linux.Handlers;
+
+/// <summary>
+/// Handler for Picker on Linux using Skia rendering.
+/// </summary>
+public partial class PickerHandler : ViewHandler<IPicker, SkiaPicker>
+{
+    public static IPropertyMapper<IPicker, PickerHandler> Mapper =
+        new PropertyMapper<IPicker, PickerHandler>(ViewHandler.ViewMapper)
+        {
+            [nameof(IPicker.Title)] = MapTitle,
+            [nameof(IPicker.TitleColor)] = MapTitleColor,
+            [nameof(IPicker.SelectedIndex)] = MapSelectedIndex,
+            [nameof(IPicker.TextColor)] = MapTextColor,
+            [nameof(IPicker.CharacterSpacing)] = MapCharacterSpacing,
+            [nameof(IPicker.HorizontalTextAlignment)] = MapHorizontalTextAlignment,
+            [nameof(IPicker.VerticalTextAlignment)] = MapVerticalTextAlignment,
+            [nameof(IView.Background)] = MapBackground,
+        };
+
+    public static CommandMapper<IPicker, PickerHandler> CommandMapper =
+        new(ViewHandler.ViewCommandMapper)
+        {
+        };
+
+    public PickerHandler() : base(Mapper, CommandMapper)
+    {
+    }
+
+    public PickerHandler(IPropertyMapper? mapper, CommandMapper? commandMapper = null)
+        : base(mapper ?? Mapper, commandMapper ?? CommandMapper)
+    {
+    }
+
+    protected override SkiaPicker CreatePlatformView()
+    {
+        return new SkiaPicker();
+    }
+
+    protected override void ConnectHandler(SkiaPicker platformView)
+    {
+        base.ConnectHandler(platformView);
+        platformView.SelectedIndexChanged += OnSelectedIndexChanged;
+
+        // Load items
+        ReloadItems();
+    }
+
+    protected override void DisconnectHandler(SkiaPicker platformView)
+    {
+        platformView.SelectedIndexChanged -= OnSelectedIndexChanged;
+        base.DisconnectHandler(platformView);
+    }
+
+    private void OnSelectedIndexChanged(object? sender, EventArgs e)
+    {
+        if (VirtualView is null || PlatformView is null) return;
+
+        VirtualView.SelectedIndex = PlatformView.SelectedIndex;
+    }
+
+    private void ReloadItems()
+    {
+        if (PlatformView is null || VirtualView is null) return;
+
+        var items = VirtualView.GetItemsAsArray();
+        PlatformView.SetItems(items.Select(i => i?.ToString() ?? ""));
+    }
+
+    public static void MapTitle(PickerHandler handler, IPicker picker)
+    {
+        if (handler.PlatformView is null) return;
+        handler.PlatformView.Title = picker.Title ?? "";
+    }
+
+    public static void MapTitleColor(PickerHandler handler, IPicker picker)
+    {
+        if (handler.PlatformView is null) return;
+        if (picker.TitleColor is not null)
+        {
+            handler.PlatformView.TitleColor = picker.TitleColor.ToSKColor();
+        }
+    }
+
+    public static void MapSelectedIndex(PickerHandler handler, IPicker picker)
+    {
+        if (handler.PlatformView is null) return;
+        handler.PlatformView.SelectedIndex = picker.SelectedIndex;
+    }
+
+    public static void MapTextColor(PickerHandler handler, IPicker picker)
+    {
+        if (handler.PlatformView is null) return;
+        if (picker.TextColor is not null)
+        {
+            handler.PlatformView.TextColor = picker.TextColor.ToSKColor();
+        }
+    }
+
+    public static void MapCharacterSpacing(PickerHandler handler, IPicker picker)
+    {
+        // Character spacing could be implemented with custom text rendering
+    }
+
+    public static void MapHorizontalTextAlignment(PickerHandler handler, IPicker picker)
+    {
+        // Text alignment would require changes to SkiaPicker drawing
+    }
+
+    public static void MapVerticalTextAlignment(PickerHandler handler, IPicker picker)
+    {
+        // Text alignment would require changes to SkiaPicker drawing
+    }
+
+    public static void MapBackground(PickerHandler handler, IPicker picker)
+    {
+        if (handler.PlatformView is null) return;
+
+        if (picker.Background is SolidPaint solidPaint && solidPaint.Color is not null)
+        {
+            handler.PlatformView.BackgroundColor = solidPaint.Color.ToSKColor();
+        }
+    }
+}