public TwitterDialog(CanvasControl canvasControl, float dpi, ICanvasEffect effectCanvas)
: this()
{
_canvasControl = canvasControl;
_dpi = dpi;
_effectCanvas = effectCanvas;
}
public void Clear()
{
Content?.Clear();
CacheBitmap?.Dispose();
CacheEffect?.Dispose();
CacheBitmap = null;
CacheEffect = null;
}
private void AddEffect()
{
CacheEffect = new Transform2DEffect()
{
Source = new ShadowEffect()
{
Source = CacheBitmap,
BlurAmount = 2,
},
TransformMatrix = Matrix3x2.CreateTranslation(3, 3)
};
}
public Border()
{
this.InitializeComponent();
this.DataContext = App.Model;
App.Judge();//判断选区
Source = new CropEffect
{
Source = App.Model.SecondSourceRenderTarget,
SourceRectangle = App.Model.isAnimated == false?
App.GetBounds(App.Model.SecondSourceRenderTarget.GetPixelColors(), App.Model.Width, App.Model.Height) : //当前选区的边界
App.Model.MaskRect //选区边界
};
}
private void CreateEffects()
{
_canvasRenderTarget = new CanvasRenderTarget(CanvasControl, (float)Window.Current.Bounds.Width,
(float)Window.Current.Bounds.Height, _canvasBitmap.Dpi);
using (var ds = _canvasRenderTarget.CreateDrawingSession())
{
ds.DrawImage(_canvasBitmap, new Rect(new Point((Window.Current.Bounds.Width - _canvasBitmap.SizeInPixels.Width) / 2, 0), _canvasBitmap.Size));
}
var blur = new GaussianBlurEffect
{
BlurAmount = _blur,
Source = _canvasRenderTarget
};
var exposure = new ExposureEffect
{
Exposure = _exposure,
Source = blur
};
var saturation = new SaturationEffect
{
Saturation = _saturation,
Source = exposure
};
var contrast = new ContrastEffect
{
Contrast = _contrast,
Source = saturation
};
_effect = contrast;
CanvasControl.Invalidate();
}
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);
}
}
private void GrayscaleBufferPrevision3_Click(object sender, RoutedEventArgs e)
{
grayscale.BufferPrecision = CanvasBufferPrecision.Precision8UIntNormalized;
canvasEffect = grayscale;
canvas.Invalidate();
}
private void GrayscaleBufferPrevision2_Click(object sender, RoutedEventArgs e)
{
grayscale.BufferPrecision = CanvasBufferPrecision.Precision32Float;
canvasEffect = grayscale;
canvas.Invalidate();
}
private void GrayscaleBufferPrevision0_Click(object sender, RoutedEventArgs e)
{
canvasEffect = temperatureAndTint;
canvas.Invalidate();
}