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Fix multiplying TextureBrush with a disposed matrix on Unix #24109

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Sep 19, 2017
Merged

Fix multiplying TextureBrush with a disposed matrix on Unix #24109

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2dcef75
Fix multiplying TextureBrush with a disposed matrix on Unix
hughbe Sep 17, 2017
3cadee4
Enable another passing test
hughbe Sep 18, 2017
e7015c7
Fix accidentally committed file
hughbe Sep 19, 2017
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9 changes: 8 additions & 1 deletion src/System.Drawing.Common/src/System/Drawing/TextureBrush.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -168,7 +168,7 @@ public Matrix Transform
{
if (value == null)
{
throw new ArgumentNullException("value");
throw new ArgumentNullException(nameof(value));
}

int status = SafeNativeMethods.Gdip.GdipSetTextureTransform(new HandleRef(this, NativeBrush), new HandleRef(value, value.nativeMatrix));
Expand Down Expand Up @@ -225,6 +225,13 @@ public void MultiplyTransform(Matrix matrix, MatrixOrder order)
throw new ArgumentNullException(nameof(matrix));
}

// Multiplying the transform by a disposed matrix is a nop in GDI+, but throws
// with the libgdiplus backend. Simulate a nop for compatability with GDI+.
if (matrix.nativeMatrix == IntPtr.Zero)
{
return;
}

int status = SafeNativeMethods.Gdip.GdipMultiplyTextureTransform(new HandleRef(this, NativeBrush),
new HandleRef(matrix, matrix.nativeMatrix),
order);
Expand Down
4 changes: 0 additions & 4 deletions src/System.Drawing.Common/tests/TextureBrushTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -294,7 +294,6 @@ public void Ctor_DisposedImage_ThrowsArgumentException()
AssertExtensions.Throws<ArgumentException>(null, () => new TextureBrush(image, WrapMode.Tile, Rectangle.Empty));
}

[ActiveIssue(20884, TestPlatforms.AnyUnix)]
[ConditionalTheory(Helpers.GdiplusIsAvailable)]
[InlineData(WrapMode.Tile - 1)]
[InlineData(WrapMode.Clamp + 1)]
Expand Down Expand Up @@ -431,7 +430,6 @@ public void MultiplyTransform_NotInvertibleMatrix_ThrowsArgumentException()
}
}

[ActiveIssue(20884, TestPlatforms.AnyUnix)]
[ConditionalFact(Helpers.GdiplusIsAvailable)]
public void MultiplyTransform_DisposedMatrix_Nop()
{
Expand Down Expand Up @@ -662,7 +660,6 @@ public void Transform_SetValid_GetReturnsExpected()
}
}

[ActiveIssue(20884, TestPlatforms.AnyUnix)]
[ConditionalFact(Helpers.GdiplusIsAvailable)]
public void Transform_SetNull_ThrowsArgumentNullException()
{
Expand Down Expand Up @@ -786,7 +783,6 @@ public void WrapMode_SetValid_GetReturnsExpected(WrapMode wrapMode)
}
}

[ActiveIssue(20884, TestPlatforms.AnyUnix)]
[ConditionalTheory(Helpers.GdiplusIsAvailable)]
[InlineData(WrapMode.Tile - 1)]
[InlineData(WrapMode.Clamp + 1)]
Expand Down