private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
// Initialize Composition UI infrastructure.
_root = Container.GetVisual();
_compositor = _root.Compositor;
_imageFactory = CompositionImageFactory.CreateCompositionImageFactory(_compositor);
// Hook the sprite visual into the XAML visual tree.
_spriteVisual = _compositor.CreateSpriteVisual();
var side = (float)Math.Min(Presenter.ActualWidth, Presenter.ActualHeight);
_spriteVisual.Size = new Vector2(side, side);
_root.Children.InsertAtTop(_spriteVisual);
// Create the effect, but don't specify the properties yet.
var temperatureAndTintEffect = new TemperatureAndTintEffect
{
Name = "temperatureAndtint",
Source = new CompositionEffectSourceParameter("source")
};
// Strongly typed version of the "temperatureAndtint.Temperature" string
_temperatureParameter = temperatureAndTintEffect.Name + "." + nameof(temperatureAndTintEffect.Temperature);
// Compile the effect
var effectFactory = _compositor.CreateEffectFactory(
temperatureAndTintEffect,
new[] { _temperatureParameter, "temperatureAndtint.Tint" });
// Create and apply the brush.
_brush = effectFactory.CreateBrush();
_spriteVisual.Brush = _brush;
ColorWheelButton.IsChecked = true;
}
private void Load_Completed(LoadedImageSurface sender, LoadedImageSourceLoadCompletedEventArgs e)
{
IsImageLoading = false;
if (e.Status == LoadedImageSourceLoadStatus.Success)
{
var compositor = Window.Current.Compositor;
var brush = compositor.CreateSurfaceBrush(_surface);
brush.Stretch = CompositionStretch.UniformToFill;
// Create effects chain.
saturationEffect = new SaturationEffect()
{
Name = "SaturationEffect",
Saturation = (float)SaturationAmount,
Source = new CompositionEffectSourceParameter("image")
};
contrastEffect = new ContrastEffect()
{
Name = "ContrastEffect",
Contrast = (float)ContrastAmount,
Source = saturationEffect
};
exposureEffect = new ExposureEffect()
{
Name = "ExposureEffect",
Source = contrastEffect,
Exposure = (float)ExposureAmount,
};
temperatureAndTintEffect = new TemperatureAndTintEffect()
{
Name = "TemperatureAndTintEffect",
Source = exposureEffect,
Temperature = (float)TemperatureAmount,
Tint = (float)TintAmount
};
graphicsEffect = new GaussianBlurEffect()
{
Name = "Blur",
Source = temperatureAndTintEffect,
BlurAmount = (float)BlurAmount,
BorderMode = EffectBorderMode.Hard,
};
var graphicsEffectFactory = compositor.CreateEffectFactory(graphicsEffect, new[] {
"SaturationEffect.Saturation", "ExposureEffect.Exposure", "Blur.BlurAmount",
"TemperatureAndTintEffect.Temperature", "TemperatureAndTintEffect.Tint",
"ContrastEffect.Contrast"
});
combinedBrush = graphicsEffectFactory.CreateBrush();
combinedBrush.SetSourceParameter("image", brush);
// Composition Brush is what is being applied to the UI Element.
CompositionBrush = combinedBrush;
}
else
{
LoadImageFromPath("ms-appx:///Assets/StoreLogo.png");
}
}
private void InitializeEffects()
{
saturationEffect = new SaturationEffect()
{
Name = "SaturationEffect",
Saturation = item.Saturation,
Source = new CompositionEffectSourceParameter("Backdrop")
};
contrastEffect = new ContrastEffect()
{
Name = "ContrastEffect",
Contrast = item.Contrast,
Source = saturationEffect
};
exposureEffect = new ExposureEffect()
{
Name = "ExposureEffect",
Source = contrastEffect,
Exposure = item.Exposure,
};
temperatureAndTintEffect = new TemperatureAndTintEffect()
{
Name = "TemperatureAndTintEffect",
Source = exposureEffect,
Temperature = item.Temperature,
Tint = item.Tint
};
graphicsEffect = new GaussianBlurEffect()
{
Name = "Blur",
Source = temperatureAndTintEffect,
BlurAmount = item.Blur,
BorderMode = EffectBorderMode.Hard,
};
}
private ICanvasImage ApplyFilterTemplate(ICanvasImage source)
{
if (_filter_index == 0) //无滤镜
{
return(source);
}
else if (_filter_index == 3) // 黑白
{
return(new GrayscaleEffect
{
Source = source
});
}
else if (_filter_index == 1) //反色
{
return(new InvertEffect
{
Source = source
});
}
else if (_filter_index == 2) //冷淡
{
var hueRotationEffect = new HueRotationEffect
{
Source = source,
Angle = 0.5f
};
return(hueRotationEffect);
}
else if (_filter_index == 4) //美食
{
var temperatureAndTintEffect = new TemperatureAndTintEffect
{
Source = source
};
temperatureAndTintEffect.Temperature = 0.6f;
temperatureAndTintEffect.Tint = 0.6f;
return(temperatureAndTintEffect);
}
else if (_filter_index == 5) //雕刻
{
var embossEffect = new EmbossEffect
{
Source = source
};
embossEffect.Amount = 5;
embossEffect.Angle = 0;
return(embossEffect);
}
else
{
return(source);
}
}
public CanvasRenderTarget applyHueRotationEffects(CanvasBitmap workingBitmap)
{
//CanvasBitmap workingBitmap = SelectWorkingBitmap(useOriginalBitmap);
if (workingBitmap != null)
{
int ww = (int)workingBitmap.SizeInPixels.Width;
int hh = (int)workingBitmap.SizeInPixels.Height;
TemperatureAndTintEffect temperatureAndTintEffect = new TemperatureAndTintEffect();
temperatureAndTintEffect.Source = workingBitmap;
temperatureAndTintEffect.Temperature = (float)hueTemperature;
temperatureAndTintEffect.Tint = (float)hueTint;
HueRotationEffect hueRotationEffect = new HueRotationEffect();
hueRotationEffect.Angle = (float)hueRotationAngle;
hueRotationEffect.Source = temperatureAndTintEffect;
PosterizeEffect posterizeEffect = null;
EdgeDetectionEffect edgeDetectionEffect = null;
if (hueDoPosterize)
{
posterizeEffect = new PosterizeEffect();
posterizeEffect.Source = hueRotationEffect;
posterizeEffect.RedValueCount = huePosterizeRedCount;
posterizeEffect.BlueValueCount = huePosterizeBlueCount;
posterizeEffect.GreenValueCount = huePosterizeGreenCount;
edgeDetectionEffect = new EdgeDetectionEffect();
edgeDetectionEffect.Source = posterizeEffect;
edgeDetectionEffect.Amount = (float)0.9;
edgeDetectionEffect.BlurAmount = 1;
edgeDetectionEffect.OverlayEdges = true;
}
//if (canvasRenderTarget != null)
// canvasRenderTarget.Dispose();
CanvasRenderTarget canvasRenderTarget = new CanvasRenderTarget(CanvasDevice.GetSharedDevice(), ww, hh, canvasBitmap.Dpi);
using (var session = canvasRenderTarget.CreateDrawingSession())
{
if (hueDoPosterize)
{
//session.DrawImage(posterizeEffect);
session.DrawImage(edgeDetectionEffect);
}
else
{
session.DrawImage(hueRotationEffect);
}
}
return(canvasRenderTarget);
}
return(null);
}
public ICanvasImage ApplyFilter(ICanvasImage source)
{
var temperatureAndTintEffect = new TemperatureAndTintEffect
{
Source = source
};
temperatureAndTintEffect.Temperature = 0.7f;
temperatureAndTintEffect.Tint = 0.7f;
return(temperatureAndTintEffect);
}
async Task <Uri> Temperature(int EffectPercentage)
{
using (var source = new StorageFileImageSource(imageStorageFile))
using (var contrastEffect = new ContrastEffect(source)
{
Level = 0.6
})
using (var sharpnessEffect = new TemperatureAndTintEffect(contrastEffect)
{
Temperature = (EffectPercentage / 100)
})
{
LastEffect = sharpnessEffect;
return(await SaveToImage());
}
}
private ICanvasImage CreateTemperatureAndTint()
{
textLabel = requiresWin10;
var temperatureAndTintEffect = new TemperatureAndTintEffect
{
Source = bitmapTiger
};
// Animation adjusts the temperature and tint of the image.
animationFunction = elapsedTime =>
{
temperatureAndTintEffect.Temperature = (float)Math.Sin(elapsedTime * 0.9);
temperatureAndTintEffect.Tint = (float)Math.Sin(elapsedTime * 2.3);
};
return(temperatureAndTintEffect);
}
private void MainGridLoaded(object sender, RoutedEventArgs e)
{
m_compositor = ElementCompositionPreview.GetElementVisual(MainGrid).Compositor;
m_root = m_compositor.CreateContainerVisual();
ElementCompositionPreview.SetElementChildVisual(MainGrid, m_root);
Size imageSize;
m_noEffectBrush = CreateBrushFromAsset(
"Bruno'sFamily2015 (13)-X2.jpg",
out imageSize);
m_imageAspectRatio = (imageSize.Width == 0 && imageSize.Height == 0) ? 1 : imageSize.Width / imageSize.Height;
m_sprite = m_compositor.CreateSpriteVisual();
ResizeImage(new Size(MainGrid.ActualWidth, MainGrid.ActualHeight));
m_root.Children.InsertAtTop(m_sprite);
// Image with alpha channel as an mask.
var alphaMaskEffectDesc = new CompositeEffect
{
Mode = CanvasComposite.DestinationIn,
Sources =
{
new CompositionEffectSourceParameter("Image"),
new Transform2DEffect
{
Name = "MaskTransform",
Source = new CompositionEffectSourceParameter("Mask")
}
}
};
m_alphaMaskEffectBrush = m_compositor.CreateEffectFactory(
alphaMaskEffectDesc,
new[] { "MaskTransform.TransformMatrix" }
).CreateBrush();
m_alphaMaskEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
m_alphaMaskEffectBrush.SetSourceParameter(
"Mask",
CreateBrushFromAsset("CircleMask.png"));
// Arithmetic operations between two images.
var arithmeticEffectDesc = new ArithmeticCompositeEffect
{
Name = "effect",
ClampOutput = false,
Source1 = new CompositionEffectSourceParameter("Source1"),
Source2 = new CompositionEffectSourceParameter("Source2")
};
m_arithmeticEffectBrush = m_compositor.CreateEffectFactory(
arithmeticEffectDesc,
new[]
{
"effect.MultiplyAmount",
"effect.Source1Amount",
"effect.Source2Amount",
"effect.Offset"
}
).CreateBrush();
m_arithmeticEffectBrush.SetSourceParameter(
"Source1",
m_noEffectBrush);
m_arithmeticEffectBrush.SetSourceParameter(
"Source2",
CreateBrushFromAsset("_P2A8041.jpg"));
// Creates a blend effect that combines two images.
var foregroundBrush = CreateBrushFromAsset("Checkerboard_100x100.png");
m_blendEffectBrushes = new CompositionEffectBrush[m_supportedBlendModes.Length];
for (int i = 0; i < m_supportedBlendModes.Length; i++)
{
var blendEffectDesc = new BlendEffect
{
Mode = m_supportedBlendModes[i],
Background = new CompositionEffectSourceParameter("Background"),
Foreground = new CompositionEffectSourceParameter("Foreground")
};
m_blendEffectBrushes[i] = m_compositor.CreateEffectFactory(
blendEffectDesc
).CreateBrush();
m_blendEffectBrushes[i].SetSourceParameter(
"Background",
m_noEffectBrush);
m_blendEffectBrushes[i].SetSourceParameter(
"Foreground",
foregroundBrush);
}
// Generates an image containing a solid color.
var colorSourceEffectDesc = new ColorSourceEffect // FloodEffect
{
Name = "effect"
};
m_colorSourceEffectBrush = m_compositor.CreateEffectFactory(
colorSourceEffectDesc,
new[] { "effect.Color" }
).CreateBrush();
// Changes the contrast of an image.
var contrastEffectDesc = new ContrastEffect
{
Name = "effect",
Source = new CompositionEffectSourceParameter("Image")
};
m_contrastEffectBrush = m_compositor.CreateEffectFactory(
contrastEffectDesc,
new[] { "effect.Contrast" }
).CreateBrush();
m_contrastEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// Changes the exposure of an image.
var exposureEffectDesc = new ExposureEffect
{
Name = "effect",
Source = new CompositionEffectSourceParameter("Image")
};
m_exposureEffectBrush = m_compositor.CreateEffectFactory(
exposureEffectDesc,
new[] { "effect.Exposure" }
).CreateBrush();
m_exposureEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// Alters the colors of an image by applying a per-channel gamma transfer function.
var gammaTransferEffectDesc = new GammaTransferEffect
{
Name = "effect",
RedDisable = false,
GreenDisable = false,
BlueDisable = false,
AlphaDisable = false,
Source = new CompositionEffectSourceParameter("Image")
};
m_gammaTransferEffectBrush = m_compositor.CreateEffectFactory(
gammaTransferEffectDesc,
new[]
{
"effect.RedAmplitude",
"effect.RedExponent",
"effect.RedOffset",
"effect.GreenAmplitude",
"effect.GreenExponent",
"effect.GreenOffset",
"effect.BlueAmplitude",
"effect.BlueExponent",
"effect.BlueOffset"
}
).CreateBrush();
m_gammaTransferEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// Converts an image to monochromatic gray.
var grayscaleEffectDesc = new GrayscaleEffect
{
Name = "effect",
Source = new CompositionEffectSourceParameter("Image")
};
m_grayscaleEffectBrush = m_compositor.CreateEffectFactory(
grayscaleEffectDesc
).CreateBrush();
m_grayscaleEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// Alters the color of an image by rotating its hue values.
var hueRotationEffectDesc = new HueRotationEffect
{
Name = "effect",
Source = new CompositionEffectSourceParameter("Image")
};
m_hueRotationEffectBrush = m_compositor.CreateEffectFactory(
hueRotationEffectDesc,
new[] { "effect.Angle" }
).CreateBrush();
m_hueRotationEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// Inverts the colors of an image.
var invertEffectDesc = new InvertEffect
{
Name = "effect",
Source = new CompositionEffectSourceParameter("Image")
};
m_invertEffectBrush = m_compositor.CreateEffectFactory(
invertEffectDesc
).CreateBrush();
m_invertEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// Alters the saturation of an image.
var saturationEffectDesc = new SaturationEffect
{
Name = "effect",
Source = new CompositionEffectSourceParameter("Image")
};
m_saturateEffectBrush = m_compositor.CreateEffectFactory(
saturationEffectDesc,
new[] { "effect.Saturation" }
).CreateBrush();
m_saturateEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// Converts an image to sepia tones.
var supportedAlphaModes = new[]
{
CanvasAlphaMode.Premultiplied,
CanvasAlphaMode.Straight
};
m_sepiaEffectBrushes = new CompositionEffectBrush[supportedAlphaModes.Length];
for (int i = 0; i < supportedAlphaModes.Length; i++)
{
var sepiaEffectDesc = new SepiaEffect
{
Name = "effect",
AlphaMode = supportedAlphaModes[i],
Source = new CompositionEffectSourceParameter("Image")
};
m_sepiaEffectBrushes[i] = m_compositor.CreateEffectFactory(
sepiaEffectDesc,
new[] { "effect.Intensity" }
).CreateBrush();
m_sepiaEffectBrushes[i].SetSourceParameter(
"Image",
m_noEffectBrush);
}
// Adjusts the temperature and/or tint of an image.
var temperatureAndTintEffectDesc = new TemperatureAndTintEffect
{
Name = "effect",
Source = new CompositionEffectSourceParameter("Image")
};
m_temperatureAndTintEffectBrush = m_compositor.CreateEffectFactory(
temperatureAndTintEffectDesc,
new[]
{
"effect.Temperature",
"effect.Tint"
}
).CreateBrush();
m_temperatureAndTintEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// Applies a 2D affine transform matrix to an image.
var transform2DEffectDesc = new Transform2DEffect
{
TransformMatrix = new Matrix3x2(
-1, 0,
0, 1,
m_sprite.Size.X, 0),
Source = new CompositionEffectSourceParameter("Image")
};
m_transform2DEffectBrush = m_compositor.CreateEffectFactory(
transform2DEffectDesc
).CreateBrush();
m_transform2DEffectBrush.SetSourceParameter(
"Image",
m_noEffectBrush);
// For simplying UI states switch, put effect parameter grids in an array
m_effectParamsGrids = new Grid[(int)EffectType.NumEffectTypes];
m_effectParamsGrids[(int)EffectType.NoEffect] = null;
m_effectParamsGrids[(int)EffectType.AlphaMask] = AlphaMaskParams;
m_effectParamsGrids[(int)EffectType.Arithmetic] = ArithmeticParams;
m_effectParamsGrids[(int)EffectType.Blend] = BlendParams;
m_effectParamsGrids[(int)EffectType.ColorSource] = ColorSourceParams;
m_effectParamsGrids[(int)EffectType.Contrast] = ContrastParams;
m_effectParamsGrids[(int)EffectType.Exposure] = ExposureParams;
m_effectParamsGrids[(int)EffectType.GammaTransfer] = GammaTransferParams;
m_effectParamsGrids[(int)EffectType.Grayscale] = null;
m_effectParamsGrids[(int)EffectType.HueRotation] = HueRotationParams;
m_effectParamsGrids[(int)EffectType.Invert] = null;
m_effectParamsGrids[(int)EffectType.Saturation] = SaturationParams;
m_effectParamsGrids[(int)EffectType.Sepia] = SepiaParams;
m_effectParamsGrids[(int)EffectType.TemperatureAndTint] = TemperatureAndTintParams;
m_effectParamsGrids[(int)EffectType.Transform2D] = null;
// Same as grids
m_effectBrushes = new CompositionBrush[(int)EffectType.NumEffectTypes];
m_effectBrushes[(int)EffectType.NoEffect] = m_noEffectBrush;
m_effectBrushes[(int)EffectType.AlphaMask] = m_alphaMaskEffectBrush;
m_effectBrushes[(int)EffectType.Arithmetic] = m_arithmeticEffectBrush;
m_effectBrushes[(int)EffectType.Blend] = m_blendEffectBrushes[m_activeBlendMode];
m_effectBrushes[(int)EffectType.ColorSource] = m_colorSourceEffectBrush;
m_effectBrushes[(int)EffectType.Contrast] = m_contrastEffectBrush;
m_effectBrushes[(int)EffectType.Exposure] = m_exposureEffectBrush;
m_effectBrushes[(int)EffectType.GammaTransfer] = m_gammaTransferEffectBrush;
m_effectBrushes[(int)EffectType.Grayscale] = m_grayscaleEffectBrush;
m_effectBrushes[(int)EffectType.HueRotation] = m_hueRotationEffectBrush;
m_effectBrushes[(int)EffectType.Invert] = m_invertEffectBrush;
m_effectBrushes[(int)EffectType.Saturation] = m_saturateEffectBrush;
m_effectBrushes[(int)EffectType.Sepia] = m_sepiaEffectBrushes[m_activeSepiaAlphaMode];
m_effectBrushes[(int)EffectType.TemperatureAndTint] = m_temperatureAndTintEffectBrush;
m_effectBrushes[(int)EffectType.Transform2D] = m_transform2DEffectBrush;
this.InitializeValues();
}
private ICanvasImage ApplyFilterTemplate(ICanvasImage source)
{
if (_filter_index == 0) //无滤镜
{
return(source);
}
else if (_filter_index == 1) // 黑白
{
return(new GrayscaleEffect
{
Source = source
});
}
else if (_filter_index == 2) //反色
{
return(new InvertEffect
{
Source = source
});
}
else if (_filter_index == 3) //冷色
{
var hueRotationEffect = new HueRotationEffect
{
Source = source,
Angle = 0.5f
};
return(hueRotationEffect);
}
else if (_filter_index == 4) //美食
{
var temperatureAndTintEffect = new TemperatureAndTintEffect
{
Source = source
};
temperatureAndTintEffect.Temperature = 0.6f;
temperatureAndTintEffect.Tint = 0.6f;
return(temperatureAndTintEffect);
}
else if (_filter_index == 5) //冷绿
{
var temperatureAndTintEffect = new TemperatureAndTintEffect
{
Source = source
};
temperatureAndTintEffect.Temperature = -0.6f;
temperatureAndTintEffect.Tint = -0.6f;
return(temperatureAndTintEffect);
}
else if (_filter_index == 6) //梦幻
{
var vignetteEffect = new VignetteEffect
{
Source = source
};
vignetteEffect.Color = Color.FromArgb(255, 0xFF, 0xFF, 0xFF);
vignetteEffect.Amount = 0.6f;
return(vignetteEffect);
}
else if (_filter_index == 7) //浮雕
{
var embossEffect = new EmbossEffect
{
Source = source
};
embossEffect.Amount = 5;
embossEffect.Angle = 0;
return(embossEffect);
}
else if (_filter_index == 8) //怀旧
{
var sepiaEffect = new SepiaEffect
{
Source = source
};
sepiaEffect.Intensity = 1;
return(sepiaEffect);
}
else if (_filter_index == 9)//运动
{
var directEffect = new DirectionalBlurEffect
{
Source = source
};
directEffect.BlurAmount = 12;
directEffect.BorderMode = EffectBorderMode.Soft;
directEffect.Angle = 3.14F;
return(directEffect);
}
else
{
return(source);
}
}
private ICanvasImage ApplyFilter(ICanvasImage source)
{
if (filterIndex == 0) // NONE
{
return(source);
}
else if (filterIndex == 1)
{
return(new GrayscaleEffect
{
Source = source
});
}
else if (filterIndex == 2)
{
return(new InvertEffect
{
Source = source
});
}
else if (filterIndex == 3)
{
var hueRotationEffect = new HueRotationEffect
{
Source = source,
Angle = 0.5f
};
return(hueRotationEffect);
}
else if (filterIndex == 4)
{
var temperatureAndTintEffect = new TemperatureAndTintEffect
{
Source = source
};
temperatureAndTintEffect.Temperature = 0.6f;
temperatureAndTintEffect.Tint = 0.6f;
return(temperatureAndTintEffect);
}
else if (filterIndex == 5)
{
var temperatureAndTintEffect = new TemperatureAndTintEffect
{
Source = source
};
temperatureAndTintEffect.Temperature = -0.6f;
temperatureAndTintEffect.Tint = -0.6f;
return(temperatureAndTintEffect);
}
else if (filterIndex == 6)
{
var vignetteEffect = new VignetteEffect
{
Source = source
};
vignetteEffect.Color = Color.FromArgb(255, 0xFF, 0xFF, 0xFF);
vignetteEffect.Amount = 0.6f;
return(vignetteEffect);
}
else if (filterIndex == 7)
{
var embossEffect = new EmbossEffect
{
Source = source
};
embossEffect.Amount = 5;
embossEffect.Angle = 0;
return(embossEffect);
}
else if (filterIndex == 8)
{
var sepiaEffect = new SepiaEffect
{
Source = source
};
sepiaEffect.Intensity = 1;
return(sepiaEffect);
}
else // NONE
{
return(source);
}
}
private async void btnUpload_Clicked(object sender, RoutedEventArgs e)
{
FileOpenPicker openPicker = new FileOpenPicker();
openPicker.ViewMode = PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".jpeg");
openPicker.FileTypeFilter.Add(".png");
// Pick only one file once a time
StorageFile file = await openPicker.PickSingleFileAsync();
if (file == null)
{
return;
}
using (IRandomAccessStream fileStream = await file.OpenAsync(FileAccessMode.Read))
{
cl = new CanvasCommandList(canvas);
using (CanvasDrawingSession clds = cl.CreateDrawingSession())
{
BitmapDecoder decoder = await BitmapDecoder.CreateAsync(fileStream);
clds.DrawImage(
CanvasBitmap.CreateFromSoftwareBitmap(canvas,
await decoder.GetSoftwareBitmapAsync(BitmapPixelFormat.Rgba16, BitmapAlphaMode.Premultiplied)));
}
blur = new GaussianBlurEffect
{
Source = cl,
BlurAmount = (float)gaussianBlurAmountSlider.Value
};
hueRotation = new HueRotationEffect
{
Source = blur,
Angle = (float)hueRotationAmountSlider.Value / 100f * 360f
};
contrast = new ContrastEffect
{
Source = hueRotation,
Contrast = (float)(contrastAmountSlider.Value - 50f) / 50f
};
saturation = new SaturationEffect
{
Source = contrast,
Saturation = (float)saturationAmountSlider.Value / 100f
};
temperatureAndTint = new TemperatureAndTintEffect
{
Source = saturation,
Temperature = (float)(temperatureAmountSlider.Value - 50f) / 50f,
Tint = (float)(tintAmountSlider.Value - 50f) / 50f
};
grayscale = new GrayscaleEffect
{
Source = temperatureAndTint
};
canvasEffect = saturation;
// CanvasControl.Invalidate Method iIndicates that the contents of the CanvasControl need to be redrawn.
// Calling Invalidate results in the Draw event being raised shortly afterward.
//
// Reference: https://microsoft.github.io/Win2D/html/M_Microsoft_Graphics_Canvas_UI_Xaml_CanvasControl_Invalidate.htm
canvas.Invalidate();
gaussianBlurAmountSlider.IsEnabled = true;
hueRotationAmountSlider.IsEnabled = true;
contrastAmountSlider.IsEnabled = true;
saturationAmountSlider.IsEnabled = true;
temperatureAmountSlider.IsEnabled = true;
tintAmountSlider.IsEnabled = true;
grayscaleBufferPrevision.IsEnabled = true;
var image = new BitmapImage();
await image.SetSourceAsync(fileStream);
}
}
