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MartinZikmundMartinZikmund
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feat: Add base (no touch input) support for Uno Platform
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3 files changed

+128
-4
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3 files changed

+128
-4
lines changed

‎CSharpMath.SkiaSharp.Wasm/CSharpMath.SkiaSharp.Wasm.csproj‎

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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<TargetFramework>netstandard2.0</TargetFramework>
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<Description>The SkiaSharp front end for CSharpMath on WebAssembly.</Description>
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<PackageTags>$(PackageTags) skiasharp</PackageTags>
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</PropertyGroup>
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<ItemGroup>
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<Compile Include="..\CSharpMath.SkiaSharp\Extensions.cs" Link="Extensions.cs" />
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<Compile Include="..\CSharpMath.SkiaSharp\MathPainter.cs" Link="MathPainter.cs" />
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<Compile Include="..\CSharpMath.SkiaSharp\SkiaCanvas.cs" Link="SkiaCanvas.cs" />
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<Compile Include="..\CSharpMath.SkiaSharp\SkiaPath.cs" Link="SkiaPath.cs" />
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<Compile Include="..\CSharpMath.SkiaSharp\TextPainter.cs" Link="TextPainter.cs" />
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</ItemGroup>
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<ItemGroup>
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<PackageReference Include="Uno.SkiaSharp.Wasm" Version="1.68.0-uno.298" />
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<ProjectReference Include="..\CSharpMath.Rendering\CSharpMath.Rendering.csproj" />
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</ItemGroup>
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</Project>

‎CSharpMath.Uno/CSharpMath.Uno.csproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project Sdk="MSBuild.Sdk.Extras/2.0.54">
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<PropertyGroup>
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<TargetFrameworks>netstandard2.0;xamarinios10;monoandroid90;monoandroid10.0;uap10.0.16299</TargetFrameworks>
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<!--xamarinmac20 currently not supported-->
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<!-- Ensures the .xr.xml files are generated in a proper layout folder -->
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<GenerateLibraryLayout>true</GenerateLibraryLayout>
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</PropertyGroup>
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<PropertyGroup Condition="'$(TargetFramework)'=='netstandard2.0'">
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<DefineConstants>$(DefineConstants);__WASM__</DefineConstants>
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</PropertyGroup>
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<ItemGroup Condition="'$(TargetFramework)'=='xamarinios10' or '$(TargetFramework)'=='MonoAndroid90' or '$(TargetFramework)'=='monoandroid10.0' or '$(TargetFramework)'=='netstandard2.0'">
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<PackageReference Include="Uno.SkiaSharp.Views" Version="1.68.0-uno.298" />
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<PackageReference Include="Uno.UI" Version="2.4.0" />
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</ItemGroup>
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<ItemGroup>
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<Page Include="**\*.xaml" Exclude="bin\**\*.xaml;obj\**\*.xaml" />
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<Compile Update="**\*.xaml.cs">
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<DependentUpon>%(Filename)</DependentUpon>
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</Compile>
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</ItemGroup>
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<ItemGroup>
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<UpToDateCheckInput Include="**\*.xaml" Exclude="bin\**\*.xaml;obj\**\*.xaml" />
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</ItemGroup>
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<ItemGroup Condition="'$(TargetFramework)'=='uap10.0.16299'">
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<PackageReference Include="SkiaSharp.Views" Version="1.68.0" />
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</ItemGroup>
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<ItemGroup Condition="'$(TargetFramework)'=='netstandard2.0'">
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<PackageReference Include="Uno.SkiaSharp.Wasm" Version="1.68.0-uno.298" />
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<ProjectReference Include="..\CSharpMath.SkiaSharp.Wasm\CSharpMath.SkiaSharp.Wasm.csproj" />
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</ItemGroup>
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<ItemGroup Condition="'$(TargetFramework)'!='netstandard2.0'">
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<ProjectReference Include="..\CSharpMath.SkiaSharp\CSharpMath.SkiaSharp.csproj" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\CSharpMath.Rendering\CSharpMath.Rendering.csproj" />
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</ItemGroup>
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<Import Project="..\CSharpMath.Xaml\CSharpMath.Xaml.projitems" Label="Shared" />
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</Project>

‎CSharpMath.Xaml/Views.cs‎

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@@ -25,8 +25,19 @@ namespace CSharpMath.Avalonia {
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using TextPainter = CSharpMath.SkiaSharp.TextPainter;
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namespace CSharpMath.Forms {
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[Xamarin.Forms.ContentProperty(nameof(LaTeX))]
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#elif HAS_UNO || WINDOWS_UWP
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using XCanvas = SkiaSharp.SKCanvas;
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using XCanvasColor = SkiaSharp.SKColor;
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using XColor = Windows.UI.Color;
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using XControl = Windows.UI.Xaml.Controls.Control;
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using XInheritControl = SkiaSharp.Views.UWP.SKXamlCanvas;
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using XProperty = Windows.UI.Xaml.DependencyProperty;
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using MathPainter = CSharpMath.SkiaSharp.MathPainter;
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using TextPainter = CSharpMath.SkiaSharp.TextPainter;
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namespace CSharpMath.Uno {
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[global::Windows.UI.Xaml.Markup.ContentProperty(Name = nameof(LaTeX))]
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#endif
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public class BaseView<TPainter, TContent> : XInheritControl, ICSharpMathAPI<TContent, XColor>
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public partial class BaseView<TPainter, TContent> : XInheritControl, ICSharpMathAPI<TContent, XColor>
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where TPainter : Painter<XCanvas, TContent, XCanvasColor>, new() where TContent : class {
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public TPainter Painter { get; } = new TPainter();
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@@ -158,9 +169,61 @@ protected sealed override void OnPaintSurface(global::SkiaSharp.Views.Forms.SKPa
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base.OnPaintSurface(e);
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e.Surface.Canvas.Clear();
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var canvas = e.Surface.Canvas;
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#elif HAS_UNO || WINDOWS_UWP
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@this.Invalidate();
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}
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return XProperty.Register(propertyName, typeof(TValue), typeof(TThis),
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new Windows.UI.Xaml.PropertyMetadata(defaultValue, (d, e) => PropertyChanged((TThis)d, e.NewValue)));
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}
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protected override global::Windows.Foundation.Size MeasureOverride(global::Windows.Foundation.Size availableSize) =>
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Painter.Measure((float)availableSize.Width) is { } rect
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? new global::Windows.Foundation.Size(rect.Width, rect.Height)
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: base.MeasureOverride(availableSize);
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struct ReadOnlyProperty<TThis, TValue> where TThis : BaseView<TPainter, TContent> {
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public ReadOnlyProperty(string propertyName,
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Func<TPainter, TValue> getter) {
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Property = XProperty.Register(propertyName, typeof(TValue), typeof(TThis), new Windows.UI.Xaml.PropertyMetadata(getter(staticPainter)));
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}
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public XProperty Property { get; }
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public void SetValue(TThis @this, TValue value) => @this.SetValue(Property, value);
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}
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private protected static XCanvasColor XColorToXCanvasColor(XColor color) => new XCanvasColor(color.R, color.G, color.B, color.A);
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private protected static XColor XCanvasColorToXColor(XCanvasColor color) => XColor.FromArgb(color.Alpha, color.Red, color.Green, color.Blue);
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global::SkiaSharp.SKPoint _origin;
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//protected override void OnTouch(global::SkiaSharp.Views.Forms.SKTouchEventArgs e) {
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// if (e.InContact && EnablePanning) {
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// switch (e.ActionType) {
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// case global::SkiaSharp.Views.Forms.SKTouchAction.Pressed:
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// _origin = e.Location;
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// e.Handled = true;
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// break;
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// case global::SkiaSharp.Views.Forms.SKTouchAction.Moved:
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// var displacement = e.Location - _origin;
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// _origin = e.Location;
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// DisplacementX += displacement.X;
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// DisplacementY += displacement.Y;
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// e.Handled = true;
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// break;
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// case global::SkiaSharp.Views.Forms.SKTouchAction.Released:
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// _origin = e.Location;
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// e.Handled = true;
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// break;
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// case global::SkiaSharp.Views.Forms.SKTouchAction.Entered:
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// case global::SkiaSharp.Views.Forms.SKTouchAction.Cancelled:
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// case global::SkiaSharp.Views.Forms.SKTouchAction.Exited:
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// default:
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// break;
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// }
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// }
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// base.OnTouch(e);
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//}
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protected sealed override void OnPaintSurface(global::SkiaSharp.Views.UWP.SKPaintSurfaceEventArgs e) {
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base.OnPaintSurface(e);
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e.Surface.Canvas.Clear();
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var canvas = e.Surface.Canvas;
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#endif
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Painter.Draw(canvas, TextAlignment, Padding, DisplacementX, DisplacementY);
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}
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}
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/// <summary>Requires touch events to be enabled in SkiaSharp/Xamarin.Forms</summary>
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public bool EnablePanning { get => (bool)GetValue(DisablePanningProperty); set => SetValue(DisablePanningProperty, value); }
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public static readonly XProperty DisablePanningProperty = CreateProperty<BaseView<TPainter, TContent>, bool>(nameof(EnablePanning), false, _ => false, (_, __) => { });
@@ -214,6 +277,6 @@ protected sealed override void OnPaintSurface(global::SkiaSharp.Views.Forms.SKPa
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private static readonly ReadOnlyProperty<BaseView<TPainter, TContent>, string?> ErrorMessagePropertyKey = new ReadOnlyProperty<BaseView<TPainter, TContent>, string?>(nameof(ErrorMessage), p => p.ErrorMessage);
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public static readonly XProperty ErrorMessageProperty = ErrorMessagePropertyKey.Property;
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}
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public class MathView : BaseView<MathPainter, MathList> { }
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public class TextView : BaseView<TextPainter, Rendering.Text.TextAtom> { }
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public partial class MathView : BaseView<MathPainter, MathList> { }
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public partial class TextView : BaseView<TextPainter, Rendering.Text.TextAtom> { }
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}

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