Dariusz Komosiński
7 years ago
committed by
GitHub
GitHub
57 changed files with 1873 additions and 463 deletions
@ -1,6 +1,6 @@ |
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<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"> |
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<ItemGroup> |
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<PackageReference Include="SkiaSharp" Version="1.68.1" /> |
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<PackageReference Condition="'$(IncludeLinuxSkia)' == 'true'" Include="SkiaSharp.NativeAssets.Linux" Version="1.68.1" /> |
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<PackageReference Include="SkiaSharp" Version="1.68.2" /> |
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<PackageReference Condition="'$(IncludeLinuxSkia)' == 'true'" Include="SkiaSharp.NativeAssets.Linux" Version="1.68.2" /> |
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</ItemGroup> |
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</Project> |
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@ -0,0 +1,349 @@ |
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using System; |
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using System.Collections.Generic; |
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using System.ComponentModel; |
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using System.Globalization; |
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using System.Text; |
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using Avalonia; |
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using Avalonia.Utilities; |
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// Ported from WPF open-source code.
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// https://github.com/dotnet/wpf/blob/ae1790531c3b993b56eba8b1f0dd395a3ed7de75/src/Microsoft.DotNet.Wpf/src/PresentationCore/System/Windows/Media/Animation/KeySpline.cs
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namespace Avalonia.Animation |
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{ |
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/// <summary>
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/// Determines how an animation is used based on a cubic bezier curve.
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/// X1 and X2 must be between 0.0 and 1.0, inclusive.
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/// See https://docs.microsoft.com/en-us/dotnet/api/system.windows.media.animation.keyspline
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/// </summary>
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[TypeConverter(typeof(KeySplineTypeConverter))] |
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public class KeySpline : AvaloniaObject |
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{ |
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// Control points
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private double _controlPointX1; |
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private double _controlPointY1; |
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private double _controlPointX2; |
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private double _controlPointY2; |
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private bool _isSpecified; |
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private bool _isDirty; |
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// The parameter that corresponds to the most recent time
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private double _parameter; |
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// Cached coefficients
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private double _Bx; // 3*points[0].X
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private double _Cx; // 3*points[1].X
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private double _Cx_Bx; // 2*(Cx - Bx)
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private double _three_Cx; // 3 - Cx
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private double _By; // 3*points[0].Y
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private double _Cy; // 3*points[1].Y
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// constants
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private const double _accuracy = .001; // 1/3 the desired accuracy in X
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private const double _fuzz = .000001; // computational zero
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/// <summary>
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/// Create a <see cref="KeySpline"/> with X1 = Y1 = 0 and X2 = Y2 = 1.
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/// </summary>
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public KeySpline() |
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{ |
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_controlPointX1 = 0.0; |
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_controlPointY1 = 0.0; |
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_controlPointX2 = 1.0; |
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_controlPointY2 = 1.0; |
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_isDirty = true; |
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} |
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/// <summary>
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/// Create a <see cref="KeySpline"/> with the given parameters
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/// </summary>
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/// <param name="x1">X coordinate for the first control point</param>
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/// <param name="y1">Y coordinate for the first control point</param>
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/// <param name="x2">X coordinate for the second control point</param>
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/// <param name="y2">Y coordinate for the second control point</param>
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public KeySpline(double x1, double y1, double x2, double y2) |
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{ |
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_controlPointX1 = x1; |
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_controlPointY1 = y1; |
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_controlPointX2 = x2; |
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_controlPointY2 = y2; |
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_isDirty = true; |
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} |
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/// <summary>
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/// Parse a <see cref="KeySpline"/> from a string. The string
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/// needs to contain 4 values in it for the 2 control points.
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/// </summary>
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/// <param name="value">string with 4 values in it</param>
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/// <param name="culture">culture of the string</param>
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/// <exception cref="FormatException">Thrown if the string does not have 4 values</exception>
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/// <returns>A <see cref="KeySpline"/> with the appropriate values set</returns>
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public static KeySpline Parse(string value, CultureInfo culture) |
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{ |
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using (var tokenizer = new StringTokenizer((string)value, CultureInfo.InvariantCulture, exceptionMessage: "Invalid KeySpline.")) |
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{ |
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return new KeySpline(tokenizer.ReadDouble(), tokenizer.ReadDouble(), tokenizer.ReadDouble(), tokenizer.ReadDouble()); |
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} |
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} |
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/// <summary>
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/// X coordinate of the first control point
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/// </summary>
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public double ControlPointX1 |
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{ |
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get => _controlPointX1; |
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set |
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{ |
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if (IsValidXValue(value)) |
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{ |
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_controlPointX1 = value; |
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} |
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else |
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{ |
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throw new ArgumentException("Invalid KeySpline X1 value. Must be >= 0.0 and <= 1.0."); |
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} |
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} |
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} |
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/// <summary>
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/// Y coordinate of the first control point
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/// </summary>
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public double ControlPointY1 |
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{ |
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get => _controlPointY1; |
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set => _controlPointY1 = value; |
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} |
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/// <summary>
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/// X coordinate of the second control point
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/// </summary>
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public double ControlPointX2 |
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{ |
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get => _controlPointX2; |
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set |
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{ |
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if (IsValidXValue(value)) |
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{ |
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_controlPointX2 = value; |
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} |
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else |
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{ |
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throw new ArgumentException("Invalid KeySpline X2 value. Must be >= 0.0 and <= 1.0."); |
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} |
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} |
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} |
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/// <summary>
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/// Y coordinate of the second control point
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/// </summary>
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public double ControlPointY2 |
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{ |
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get => _controlPointY2; |
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set => _controlPointY2 = value; |
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} |
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/// <summary>
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/// Calculates spline progress from a linear progress.
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/// </summary>
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/// <param name="linearProgress">the linear progress</param>
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/// <returns>the spline progress</returns>
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public double GetSplineProgress(double linearProgress) |
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{ |
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if (_isDirty) |
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{ |
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Build(); |
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} |
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if (!_isSpecified) |
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{ |
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return linearProgress; |
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} |
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else |
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{ |
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SetParameterFromX(linearProgress); |
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return GetBezierValue(_By, _Cy, _parameter); |
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} |
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} |
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/// <summary>
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/// Check to see whether the <see cref="KeySpline"/> is valid by looking
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/// at its X values.
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/// </summary>
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/// <returns>true if the X values for this <see cref="KeySpline"/> fall in
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/// acceptable range; false otherwise.</returns>
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public bool IsValid() |
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{ |
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return IsValidXValue(_controlPointX1) && IsValidXValue(_controlPointX2); |
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} |
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/// <summary>
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///
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/// </summary>
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/// <param name="value"></param>
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/// <returns></returns>
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private bool IsValidXValue(double value) |
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{ |
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return value >= 0.0 && value <= 1.0; |
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} |
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/// <summary>
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/// Compute cached coefficients.
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/// </summary>
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private void Build() |
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{ |
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if (_controlPointX1 == 0 && _controlPointY1 == 0 && _controlPointX2 == 1 && _controlPointY2 == 1) |
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{ |
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// This KeySpline would have no effect on the progress.
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_isSpecified = false; |
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} |
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else |
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{ |
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_isSpecified = true; |
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_parameter = 0; |
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// X coefficients
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_Bx = 3 * _controlPointX1; |
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_Cx = 3 * _controlPointX2; |
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_Cx_Bx = 2 * (_Cx - _Bx); |
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_three_Cx = 3 - _Cx; |
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// Y coefficients
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_By = 3 * _controlPointY1; |
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_Cy = 3 * _controlPointY2; |
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} |
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_isDirty = false; |
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} |
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/// <summary>
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/// Get an X or Y value with the Bezier formula.
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/// </summary>
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/// <param name="b">the second Bezier coefficient</param>
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/// <param name="c">the third Bezier coefficient</param>
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/// <param name="t">the parameter value to evaluate at</param>
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/// <returns>the value of the Bezier function at the given parameter</returns>
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static private double GetBezierValue(double b, double c, double t) |
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{ |
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double s = 1.0 - t; |
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double t2 = t * t; |
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return b * t * s * s + c * t2 * s + t2 * t; |
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} |
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/// <summary>
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/// Get X and dX/dt at a given parameter
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/// </summary>
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/// <param name="t">the parameter value to evaluate at</param>
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/// <param name="x">the value of x there</param>
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/// <param name="dx">the value of dx/dt there</param>
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private void GetXAndDx(double t, out double x, out double dx) |
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{ |
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double s = 1.0 - t; |
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double t2 = t * t; |
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double s2 = s * s; |
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x = _Bx * t * s2 + _Cx * t2 * s + t2 * t; |
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dx = _Bx * s2 + _Cx_Bx * s * t + _three_Cx * t2; |
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} |
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/// <summary>
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/// Compute the parameter value that corresponds to a given X value, using a modified
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/// clamped Newton-Raphson algorithm to solve the equation X(t) - time = 0. We make
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/// use of some known properties of this particular function:
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/// * We are only interested in solutions in the interval [0,1]
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/// * X(t) is increasing, so we can assume that if X(t) > time t > solution. We use
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/// that to clamp down the search interval with every probe.
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/// * The derivative of X and Y are between 0 and 3.
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/// </summary>
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/// <param name="time">the time, scaled to fit in [0,1]</param>
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private void SetParameterFromX(double time) |
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{ |
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// Dynamic search interval to clamp with
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double bottom = 0; |
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double top = 1; |
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if (time == 0) |
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{ |
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_parameter = 0; |
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} |
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else if (time == 1) |
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{ |
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_parameter = 1; |
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} |
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else |
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{ |
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// Loop while improving the guess
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while (top - bottom > _fuzz) |
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{ |
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double x, dx, absdx; |
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// Get x and dx/dt at the current parameter
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GetXAndDx(_parameter, out x, out dx); |
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absdx = Math.Abs(dx); |
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// Clamp down the search interval, relying on the monotonicity of X(t)
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if (x > time) |
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{ |
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top = _parameter; // because parameter > solution
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} |
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else |
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{ |
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bottom = _parameter; // because parameter < solution
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} |
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// The desired accuracy is in ultimately in y, not in x, so the
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// accuracy needs to be multiplied by dx/dy = (dx/dt) / (dy/dt).
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// But dy/dt <=3, so we omit that
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if (Math.Abs(x - time) < _accuracy * absdx) |
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{ |
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break; // We're there
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} |
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if (absdx > _fuzz) |
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{ |
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// Nonzero derivative, use Newton-Raphson to obtain the next guess
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double next = _parameter - (x - time) / dx; |
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// If next guess is out of the search interval then clamp it in
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if (next >= top) |
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{ |
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_parameter = (_parameter + top) / 2; |
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} |
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else if (next <= bottom) |
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{ |
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_parameter = (_parameter + bottom) / 2; |
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} |
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else |
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{ |
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// Next guess is inside the search interval, accept it
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_parameter = next; |
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} |
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} |
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else // Zero derivative, halve the search interval
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{ |
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_parameter = (bottom + top) / 2; |
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} |
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} |
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} |
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} |
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} |
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/// <summary>
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/// Converts string values to <see cref="KeySpline"/> values
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/// </summary>
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public class KeySplineTypeConverter : TypeConverter |
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{ |
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public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType) |
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{ |
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return sourceType == typeof(string); |
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} |
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public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value) |
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{ |
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return KeySpline.Parse((string)value, culture); |
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} |
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} |
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} |
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@ -1,44 +0,0 @@ |
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namespace Avalonia.Media.TextFormatting.Unicode |
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{ |
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public enum UnicodeGeneralCategory : byte |
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{ |
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Other, //C# Cc | Cf | Cn | Co | Cs
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Control, //Cc
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Format, //Cf
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Unassigned, //Cn
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PrivateUse, //Co
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Surrogate, //Cs
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Letter, //L# Ll | Lm | Lo | Lt | Lu
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CasedLetter, //LC# Ll | Lt | Lu
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LowercaseLetter, //Ll
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ModifierLetter, //Lm
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OtherLetter, //Lo
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TitlecaseLetter, //Lt
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UppercaseLetter, //Lu
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Mark, //M
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SpacingMark, //Mc
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EnclosingMark, //Me
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NonspacingMark, //Mn
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Number, //N# Nd | Nl | No
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DecimalNumber, //Nd
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LetterNumber, //Nl
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OtherNumber, //No
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Punctuation, //P
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ConnectorPunctuation, //Pc
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DashPunctuation, //Pd
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ClosePunctuation, //Pe
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FinalPunctuation, //Pf
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InitialPunctuation, //Pi
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OtherPunctuation, //Po
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OpenPunctuation, //Ps
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Symbol, //S# Sc | Sk | Sm | So
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CurrencySymbol, //Sc
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ModifierSymbol, //Sk
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MathSymbol, //Sm
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OtherSymbol, //So
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Separator, //Z# Zl | Zp | Zs
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LineSeparator, //Zl
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ParagraphSeparator, //Zp
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SpaceSeparator, //Zs
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} |
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} |
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@ -0,0 +1,55 @@ |
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using System; |
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using System.Runtime.InteropServices; |
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using static Avalonia.Win32.Interop.UnmanagedMethods; |
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namespace Avalonia.Win32.Interop |
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{ |
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internal class TaskBarList |
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{ |
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private static IntPtr s_taskBarList; |
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private static HrInit s_hrInitDelegate; |
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private static MarkFullscreenWindow s_markFullscreenWindowDelegate; |
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/// <summary>
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/// Ported from https://github.com/chromium/chromium/blob/master/ui/views/win/fullscreen_handler.cc
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/// </summary>
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/// <param name="fullscreen">Fullscreen state.</param>
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public static unsafe void MarkFullscreen(IntPtr hwnd, bool fullscreen) |
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{ |
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if (s_taskBarList == IntPtr.Zero) |
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{ |
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Guid clsid = ShellIds.TaskBarList; |
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Guid iid = ShellIds.ITaskBarList2; |
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int result = CoCreateInstance(ref clsid, IntPtr.Zero, 1, ref iid, out s_taskBarList); |
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if (s_taskBarList != IntPtr.Zero) |
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{ |
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var ptr = (ITaskBarList2VTable**)s_taskBarList.ToPointer(); |
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if (s_hrInitDelegate is null) |
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{ |
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s_hrInitDelegate = Marshal.GetDelegateForFunctionPointer<HrInit>((*ptr)->HrInit); |
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} |
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if (s_hrInitDelegate(s_taskBarList) != HRESULT.S_OK) |
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{ |
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s_taskBarList = IntPtr.Zero; |
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} |
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} |
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} |
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if (s_taskBarList != IntPtr.Zero) |
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{ |
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var ptr = (ITaskBarList2VTable**)s_taskBarList.ToPointer(); |
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if (s_markFullscreenWindowDelegate is null) |
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{ |
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s_markFullscreenWindowDelegate = Marshal.GetDelegateForFunctionPointer<MarkFullscreenWindow>((*ptr)->MarkFullscreenWindow); |
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} |
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s_markFullscreenWindowDelegate(s_taskBarList, hwnd, fullscreen); |
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} |
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} |
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} |
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} |
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@ -0,0 +1,13 @@ |
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using static Avalonia.Win32.Interop.UnmanagedMethods; |
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namespace Avalonia.Win32 |
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{ |
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internal static class Win32TypeExtensions |
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{ |
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public static PixelRect ToPixelRect(this RECT rect) |
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{ |
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return new PixelRect(rect.left, rect.top, rect.right - rect.left, |
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rect.bottom - rect.top); |
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} |
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} |
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} |
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@ -0,0 +1,145 @@ |
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using System; |
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using Avalonia.Controls.Shapes; |
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using Avalonia.Media; |
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using Avalonia.Styling; |
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using Xunit; |
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namespace Avalonia.Animation.UnitTests |
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{ |
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public class KeySplineTests |
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{ |
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[Theory] |
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[InlineData("1,2 3,4")] |
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[InlineData("1 2 3 4")] |
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[InlineData("1 2,3 4")] |
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[InlineData("1,2,3,4")] |
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public void Can_Parse_KeySpline_Via_TypeConverter(string input) |
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{ |
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var conv = new KeySplineTypeConverter(); |
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var keySpline = (KeySpline)conv.ConvertFrom(input); |
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Assert.Equal(1, keySpline.ControlPointX1); |
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Assert.Equal(2, keySpline.ControlPointY1); |
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Assert.Equal(3, keySpline.ControlPointX2); |
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Assert.Equal(4, keySpline.ControlPointY2); |
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} |
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[Theory] |
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[InlineData(0.00)] |
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[InlineData(0.50)] |
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[InlineData(1.00)] |
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public void KeySpline_X_Values_In_Range_Do_Not_Throw(double input) |
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{ |
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var keySpline = new KeySpline(); |
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keySpline.ControlPointX1 = input; // no exception will be thrown -- test will fail if exception thrown
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keySpline.ControlPointX2 = input; // no exception will be thrown -- test will fail if exception thrown
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} |
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[Theory] |
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[InlineData(-0.01)] |
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[InlineData(1.01)] |
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public void KeySpline_X_Values_Cannot_Be_Out_Of_Range(double input) |
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{ |
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var keySpline = new KeySpline(); |
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Assert.Throws<ArgumentException>(() => keySpline.ControlPointX1 = input); |
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Assert.Throws<ArgumentException>(() => keySpline.ControlPointX2 = input); |
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} |
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/* |
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To get the test values for the KeySpline test, you can: |
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1) Grab the WPF sample for KeySpline animations from https://github.com/microsoft/WPF-Samples/tree/master/Animation/KeySplineAnimations
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2) Add the following xaml somewhere: |
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<Button Content="Capture" |
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Click="Button_Click"/> |
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<ScrollViewer VerticalScrollBarVisibility="Visible"> |
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<TextBlock Name="CaptureData" |
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Text="---" |
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TextWrapping="Wrap" /> |
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</ScrollViewer> |
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3) Add the following code to the code behind: |
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private void Button_Click(object sender, RoutedEventArgs e) |
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{ |
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CaptureData.Text += string.Format("\n{0} | {1}", myTranslateTransform3D.OffsetX, (TimeSpan)ExampleStoryboard.GetCurrentTime(this)); |
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CaptureData.Text += |
|||
"\nKeySpline=\"" + mySplineKeyFrame.KeySpline.ControlPoint1.X.ToString() + "," + |
|||
mySplineKeyFrame.KeySpline.ControlPoint1.Y.ToString() + " " + |
|||
mySplineKeyFrame.KeySpline.ControlPoint2.X.ToString() + "," + |
|||
mySplineKeyFrame.KeySpline.ControlPoint2.Y.ToString() + "\""; |
|||
CaptureData.Text += "\n-----"; |
|||
} |
|||
4) Run the app, mess with the slider values, then click the button to capture output values |
|||
**/ |
|||
|
|||
[Fact] |
|||
public void Check_KeySpline_Handled_properly() |
|||
{ |
|||
var keyframe1 = new KeyFrame() |
|||
{ |
|||
Setters = |
|||
{ |
|||
new Setter(RotateTransform.AngleProperty, -2.5d), |
|||
}, |
|||
KeyTime = TimeSpan.FromSeconds(0) |
|||
}; |
|||
|
|||
var keyframe2 = new KeyFrame() |
|||
{ |
|||
Setters = |
|||
{ |
|||
new Setter(RotateTransform.AngleProperty, 2.5d), |
|||
}, |
|||
KeyTime = TimeSpan.FromSeconds(5), |
|||
KeySpline = new KeySpline(0.1123555056179775, |
|||
0.657303370786517, |
|||
0.8370786516853934, |
|||
0.499999999999999999) |
|||
}; |
|||
|
|||
var animation = new Animation() |
|||
{ |
|||
Duration = TimeSpan.FromSeconds(5), |
|||
Children = |
|||
{ |
|||
keyframe1, |
|||
keyframe2 |
|||
}, |
|||
IterationCount = new IterationCount(5), |
|||
PlaybackDirection = PlaybackDirection.Alternate |
|||
}; |
|||
|
|||
var rotateTransform = new RotateTransform(-2.5); |
|||
var rect = new Rectangle() |
|||
{ |
|||
RenderTransform = rotateTransform |
|||
}; |
|||
|
|||
var clock = new TestClock(); |
|||
var animationRun = animation.RunAsync(rect, clock); |
|||
|
|||
// position is what you'd expect at end and beginning
|
|||
clock.Step(TimeSpan.Zero); |
|||
Assert.Equal(rotateTransform.Angle, -2.5); |
|||
clock.Step(TimeSpan.FromSeconds(5)); |
|||
Assert.Equal(rotateTransform.Angle, 2.5); |
|||
|
|||
// test some points in between end and beginning
|
|||
var tolerance = 0.01; |
|||
clock.Step(TimeSpan.Parse("00:00:10.0153932")); |
|||
var expected = -2.4122350198982545; |
|||
Assert.True(Math.Abs(rotateTransform.Angle - expected) <= tolerance); |
|||
|
|||
clock.Step(TimeSpan.Parse("00:00:11.2655407")); |
|||
expected = -0.37153223002125113; |
|||
Assert.True(Math.Abs(rotateTransform.Angle - expected) <= tolerance); |
|||
|
|||
clock.Step(TimeSpan.Parse("00:00:12.6158773")); |
|||
expected = 0.3967885416786294; |
|||
Assert.True(Math.Abs(rotateTransform.Angle - expected) <= tolerance); |
|||
|
|||
clock.Step(TimeSpan.Parse("00:00:14.6495256")); |
|||
expected = 1.8016358493761722; |
|||
Assert.True(Math.Abs(rotateTransform.Angle - expected) <= tolerance); |
|||
} |
|||
} |
|||
} |
|||
Loading…
Reference in new issue