public SKPaint CreateTextPaint(SeriesValue seriesValue, SKColor color)
{
var textPaint = new SKPaint
{
Color = color,
TextSize = chart.TextSize
};
if (!seriesValue.Focused && chart.HasShapeFocused)
{
SKBlurStyle blurStyle = SKBlurStyle.Normal;
textPaint.MaskFilter = SKMaskFilter.CreateBlur(blurStyle, chart.Sigma);
}
return(textPaint);
}
public SKPaint CreateSlicePaint(SeriesValue seriesValue)
{
var paint = new SKPaint
{
StrokeWidth = 30,
Style = SKPaintStyle.Fill,
Color = seriesValue.HasColour() ? seriesValue.Colour : palette.GetAvaibleColour(),
};
if (!seriesValue.Focused && chart.HasShapeFocused)
{
SKBlurStyle blurStyle = SKBlurStyle.Normal;
paint.MaskFilter = SKMaskFilter.CreateBlur(blurStyle, chart.Sigma);
}
return(paint);
}
public SKPaint CreateDotPaint(SeriesValue value)
{
var paint = new SKPaint
{
Color = !value.Colour.Equals(SKColor.Empty) ? value.Colour : palette.GetAvaibleColour(),
StrokeWidth = 20,
TextSize = chart.TextSize,
TextAlign = SKTextAlign.Center
};
if (!value.Focused && chart.HasShapeFocused)
{
SKBlurStyle blurStyle = SKBlurStyle.Normal;
paint.MaskFilter = SKMaskFilter.CreateBlur(blurStyle, chart.Sigma);
}
return(paint);
}
void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)
{
SKImageInfo info = args.Info;
SKSurface surface = args.Surface;
SKCanvas canvas = surface.Canvas;
canvas.Clear(SKColors.Pink);
// Get values from XAML controls
SKBlurStyle blurStyle =
(SKBlurStyle)(blurStylePicker.SelectedIndex == -1 ?
0 : blurStylePicker.SelectedItem);
float sigma = (float)sigmaSlider.Value;
using (SKPaint paint = new SKPaint())
{
// Set SKPaint properties
paint.TextSize = (info.Width - 100) / (TEXT.Length / 2);
paint.MaskFilter = SKMaskFilter.CreateBlur(blurStyle, sigma);
// Get text bounds and calculate display rectangle
SKRect textBounds = new SKRect();
paint.MeasureText(TEXT, ref textBounds);
SKRect textRect = new SKRect(0, 0, info.Width, textBounds.Height + 50);
// Center the text in the display rectangle
float xText = textRect.Width / 2 - textBounds.MidX;
float yText = textRect.Height / 2 - textBounds.MidY;
canvas.DrawText(TEXT, xText, yText, paint);
// Calculate rectangle for bitmap
SKRect bitmapRect = new SKRect(0, textRect.Bottom, info.Width, info.Height);
bitmapRect.Inflate(-50, -50);
canvas.DrawBitmap(bitmap, bitmapRect, BitmapStretch.Uniform, paint: paint);
}
}
public static void DrawBlurText(string TEXT, SKBitmap info, SKCanvas canvas, SKBlurStyle blurStyle, float sigma)
{
canvas.Clear(SKColors.Pink);
using (SKPaint paint = new SKPaint())
{
// Set SKPaint properties
paint.TextSize = (info.Width - 100) / (TEXT.Length / 2);
paint.MaskFilter = SKMaskFilter.CreateBlur(blurStyle, sigma);
// Get text bounds and calculate display rectangle
SKRect textBounds = new SKRect();
paint.MeasureText(TEXT, ref textBounds);
SKRect textRect = new SKRect(0, 0, info.Width, textBounds.Height + 50);
// Center the text in the display rectangle
float xText = textRect.Width / 2 - textBounds.MidX;
float yText = textRect.Height / 2 - textBounds.MidY;
canvas.DrawText(TEXT, xText, yText, paint);
}
}
public static SKMaskFilter CreateBlur(SKBlurStyle blurStyle, float sigma, SKRect occluder, bool respectCTM)
{
return(GetObject <SKMaskFilter> (SkiaApi.sk_maskfilter_new_blur_with_flags(blurStyle, sigma, ref occluder, respectCTM)));
}
public static SKMaskFilter CreateBlur(SKBlurStyle blurStyle, float sigma, SKRect occluder, SKBlurMaskFilterFlags flags)
{
return(CreateBlur(blurStyle, sigma, occluder, true));
}
public static SKMaskFilter CreateBlur(SKBlurStyle blurStyle, float sigma)
{
return(GetObject <SKMaskFilter> (SkiaApi.sk_maskfilter_new_blur(blurStyle, sigma)));
}
public extern static sk_maskfilter_t sk_maskfilter_new_blur(SKBlurStyle style, float sigma);
public static SKMaskFilter CreateBlur(SKBlurStyle blurStyle, float sigma, SKBlurMaskFilterFlags flags)
{
return(CreateBlur(blurStyle, sigma, SKRect.Empty, flags));
}
public static SKMaskFilter CreateBlur (SKBlurStyle blurStyle, float sigma)
{
return GetObject<SKMaskFilter> (SkiaApi.sk_maskfilter_new_blur (blurStyle, sigma));
}
public extern static sk_maskfilter_t sk_maskfilter_new_blur(SKBlurStyle style, float sigma);
public static SKMaskFilter CreateBlur(SKBlurStyle blurStyle, float sigma, SKRect occluder, bool respectCTM)
{
return(CreateBlur(blurStyle, sigma, respectCTM));
}
