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
This commit is contained in:
logikonline
304
Views/SkiaPage.cs
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304
Views/SkiaPage.cs
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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using SkiaSharp;
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using Microsoft.Maui.Graphics;
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namespace Microsoft.Maui.Platform;
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/// <summary>
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/// Base class for Skia-rendered pages.
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/// </summary>
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public class SkiaPage : SkiaView
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{
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private SkiaView? _content;
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private string _title = "";
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private SKColor _titleBarColor = new SKColor(0x21, 0x96, 0xF3); // Material Blue
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private SKColor _titleTextColor = SKColors.White;
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private bool _showNavigationBar = false;
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private float _navigationBarHeight = 56;
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// Padding
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private float _paddingLeft;
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private float _paddingTop;
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private float _paddingRight;
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private float _paddingBottom;
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public SkiaView? Content
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{
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get => _content;
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set
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{
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if (_content != null)
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{
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_content.Parent = null;
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}
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_content = value;
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if (_content != null)
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{
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_content.Parent = this;
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}
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Invalidate();
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}
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}
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public string Title
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{
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get => _title;
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set
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{
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_title = value;
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Invalidate();
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}
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}
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public SKColor TitleBarColor
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{
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get => _titleBarColor;
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set
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{
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_titleBarColor = value;
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Invalidate();
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}
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}
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public SKColor TitleTextColor
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{
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get => _titleTextColor;
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set
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{
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_titleTextColor = value;
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Invalidate();
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}
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}
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public bool ShowNavigationBar
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{
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get => _showNavigationBar;
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set
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{
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_showNavigationBar = value;
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Invalidate();
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}
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}
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public float NavigationBarHeight
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{
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get => _navigationBarHeight;
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set
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{
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_navigationBarHeight = value;
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Invalidate();
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}
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}
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public float PaddingLeft
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{
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get => _paddingLeft;
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set { _paddingLeft = value; Invalidate(); }
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}
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public float PaddingTop
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{
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get => _paddingTop;
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set { _paddingTop = value; Invalidate(); }
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}
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public float PaddingRight
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{
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get => _paddingRight;
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set { _paddingRight = value; Invalidate(); }
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}
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public float PaddingBottom
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{
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get => _paddingBottom;
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set { _paddingBottom = value; Invalidate(); }
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}
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public bool IsBusy { get; set; }
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public event EventHandler? Appearing;
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public event EventHandler? Disappearing;
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protected override void OnDraw(SKCanvas canvas, SKRect bounds)
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{
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// Draw background
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if (BackgroundColor != SKColors.Transparent)
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{
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using var bgPaint = new SKPaint
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{
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Color = BackgroundColor,
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Style = SKPaintStyle.Fill
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};
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canvas.DrawRect(bounds, bgPaint);
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}
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var contentTop = bounds.Top;
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// Draw navigation bar if visible
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if (_showNavigationBar)
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{
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DrawNavigationBar(canvas, new SKRect(bounds.Left, bounds.Top, bounds.Right, bounds.Top + _navigationBarHeight));
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contentTop = bounds.Top + _navigationBarHeight;
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}
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// Calculate content bounds with padding
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var contentBounds = new SKRect(
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bounds.Left + _paddingLeft,
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contentTop + _paddingTop,
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bounds.Right - _paddingRight,
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bounds.Bottom - _paddingBottom);
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// Draw content
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if (_content != null)
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{
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_content.Bounds = contentBounds;
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_content.Draw(canvas);
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}
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// Draw busy indicator overlay
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if (IsBusy)
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{
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DrawBusyIndicator(canvas, bounds);
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}
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}
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protected virtual void DrawNavigationBar(SKCanvas canvas, SKRect bounds)
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{
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// Draw navigation bar background
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using var barPaint = new SKPaint
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{
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Color = _titleBarColor,
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Style = SKPaintStyle.Fill
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};
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canvas.DrawRect(bounds, barPaint);
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// Draw title
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if (!string.IsNullOrEmpty(_title))
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{
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using var font = new SKFont(SKTypeface.Default, 20);
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using var textPaint = new SKPaint(font)
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{
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Color = _titleTextColor,
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IsAntialias = true
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};
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var textBounds = new SKRect();
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textPaint.MeasureText(_title, ref textBounds);
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var x = bounds.Left + 16;
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var y = bounds.MidY - textBounds.MidY;
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canvas.DrawText(_title, x, y, textPaint);
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}
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// Draw shadow
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using var shadowPaint = new SKPaint
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{
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Color = new SKColor(0, 0, 0, 30),
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Style = SKPaintStyle.Fill,
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MaskFilter = SKMaskFilter.CreateBlur(SKBlurStyle.Normal, 2)
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};
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canvas.DrawRect(new SKRect(bounds.Left, bounds.Bottom, bounds.Right, bounds.Bottom + 4), shadowPaint);
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}
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private void DrawBusyIndicator(SKCanvas canvas, SKRect bounds)
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{
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// Draw semi-transparent overlay
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using var overlayPaint = new SKPaint
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{
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Color = new SKColor(255, 255, 255, 180),
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Style = SKPaintStyle.Fill
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};
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canvas.DrawRect(bounds, overlayPaint);
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// Draw spinning indicator (simplified - would animate in real impl)
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using var indicatorPaint = new SKPaint
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{
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Color = _titleBarColor,
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Style = SKPaintStyle.Stroke,
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StrokeWidth = 4,
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IsAntialias = true,
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StrokeCap = SKStrokeCap.Round
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};
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var centerX = bounds.MidX;
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var centerY = bounds.MidY;
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var radius = 20f;
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using var path = new SKPath();
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path.AddArc(new SKRect(centerX - radius, centerY - radius, centerX + radius, centerY + radius), 0, 270);
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canvas.DrawPath(path, indicatorPaint);
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}
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public void OnAppearing()
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{
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Appearing?.Invoke(this, EventArgs.Empty);
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}
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public void OnDisappearing()
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{
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Disappearing?.Invoke(this, EventArgs.Empty);
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}
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protected override SKSize MeasureOverride(SKSize availableSize)
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{
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// Page takes all available space
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return availableSize;
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}
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public override void OnPointerPressed(PointerEventArgs e)
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{
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// Adjust coordinates for content
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var contentTop = _showNavigationBar ? _navigationBarHeight : 0;
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if (e.Y > contentTop && _content != null)
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{
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var contentE = new PointerEventArgs(e.X - _paddingLeft, e.Y - contentTop - _paddingTop, e.Button);
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_content.OnPointerPressed(contentE);
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}
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}
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public override void OnPointerMoved(PointerEventArgs e)
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{
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var contentTop = _showNavigationBar ? _navigationBarHeight : 0;
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if (e.Y > contentTop && _content != null)
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{
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var contentE = new PointerEventArgs(e.X - _paddingLeft, e.Y - contentTop - _paddingTop, e.Button);
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_content.OnPointerMoved(contentE);
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}
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}
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public override void OnPointerReleased(PointerEventArgs e)
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{
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var contentTop = _showNavigationBar ? _navigationBarHeight : 0;
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if (e.Y > contentTop && _content != null)
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{
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var contentE = new PointerEventArgs(e.X - _paddingLeft, e.Y - contentTop - _paddingTop, e.Button);
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_content.OnPointerReleased(contentE);
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}
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}
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public override void OnKeyDown(KeyEventArgs e)
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{
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_content?.OnKeyDown(e);
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}
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public override void OnKeyUp(KeyEventArgs e)
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{
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_content?.OnKeyUp(e);
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}
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public override void OnScroll(ScrollEventArgs e)
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{
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_content?.OnScroll(e);
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}
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}
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/// <summary>
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/// Simple content page view.
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/// </summary>
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public class SkiaContentPage : SkiaPage
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{
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// SkiaContentPage is essentially the same as SkiaPage
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// but represents a ContentPage specifically
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}
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