/// <inheritdoc cref="IDrawableTask{TDrawingContext}.InitializeTask(TDrawingContext)" />
public override void InitializeTask(SkiaSharpDrawingContext drawingContext)
{
if (skiaPaint == null)
{
skiaPaint = new SKPaint();
}
skiaPaint.Shader = SKShader.CreateLinearGradient(
_startPoint,
_endPoint,
_gradientStops,
SKShaderTileMode.Repeat);
skiaPaint.IsAntialias = IsAntialias;
skiaPaint.IsStroke = false;
skiaPaint.StrokeWidth = 0;
if (ClipRectangle != RectangleF.Empty)
{
_ = drawingContext.Canvas.Save();
drawingContext.Canvas.ClipRect(new SKRect(ClipRectangle.X, ClipRectangle.Y, ClipRectangle.Width, ClipRectangle.Height));
_drawingContext = drawingContext;
}
drawingContext.Paint = skiaPaint;
drawingContext.PaintTask = this;
}
/// <inheritdoc cref="Geometry.OnDraw(SkiaSharpDrawingContext, SKPaint)" />
public override void OnDraw(SkiaSharpDrawingContext context, SKPaint paint)
{
var rx = Width / 2f;
var ry = Height / 2f;
context.Canvas.DrawOval(X + rx, Y + ry, rx, ry, paint);
}
private SKRect GetDrawRectangleSize(SkiaSharpDrawingContext drawingContext)
{
var clip = GetClipRectangle(drawingContext.MotionCanvas);
return(clip == LvcRectangle.Empty
? new SKRect(0, 0, drawingContext.Info.Width, drawingContext.Info.Width)
: new SKRect(clip.X, clip.Y, clip.Width, clip.Height));
}
/// <inheritdoc cref="Geometry.OnDraw(SkiaSharpDrawingContext, SKPaint)" />
public override void OnDraw(SkiaSharpDrawingContext context, SKPaint paint)
{
context.Canvas.DrawRect(
new SKRect {
Top = Y, Left = X, Size = new SKSize {
Height = Height, Width = Width
}
}, paint);
}
/// <summary>
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
/// </summary>
public override void Dispose()
{
if (ClipRectangle != RectangleF.Empty && _drawingContext != null)
{
_drawingContext.Canvas.Restore();
_drawingContext = null;
}
base.Dispose();
}
/// <inheritdoc cref="IPaint{TDrawingContext}.InitializeTask(TDrawingContext)" />
public override void InitializeTask(SkiaSharpDrawingContext drawingContext)
{
skiaPaint ??= new SKPaint();
var size = GetDrawRectangleSize(drawingContext);
var center = new SKPoint(size.Location.X + _center.X * size.Width, size.Location.Y + _center.Y * size.Height);
var r = size.Location.X + size.Width > size.Location.Y + size.Height
? size.Location.Y + size.Height
: size.Location.X + size.Width;
r *= _radius;
skiaPaint.Shader = SKShader.CreateRadialGradient(
center,
r,
_gradientStops,
_colorPos,
_tileMode);
skiaPaint.IsAntialias = IsAntialias;
skiaPaint.IsStroke = true;
skiaPaint.StrokeWidth = StrokeThickness;
skiaPaint.StrokeCap = StrokeCap;
skiaPaint.StrokeJoin = StrokeJoin;
skiaPaint.StrokeMiter = StrokeMiter;
skiaPaint.Style = IsStroke ? SKPaintStyle.Stroke : SKPaintStyle.Fill;
if (FontFamily != null)
{
skiaPaint.Typeface = GetTypeFaceFromFontFamily();
}
if (PathEffect is not null)
{
PathEffect.CreateEffect(drawingContext);
skiaPaint.PathEffect = PathEffect.SKPathEffect;
}
if (ImageFilter is not null)
{
ImageFilter.CreateFilter(drawingContext);
skiaPaint.ImageFilter = ImageFilter.SKImageFilter;
}
var clip = GetClipRectangle(drawingContext.MotionCanvas);
if (clip != LvcRectangle.Empty)
{
_ = drawingContext.Canvas.Save();
drawingContext.Canvas.ClipRect(new SKRect(clip.X, clip.Y, clip.X + clip.Width, clip.Y + clip.Height));
_drawingContext = drawingContext;
}
drawingContext.Paint = skiaPaint;
drawingContext.PaintTask = this;
}
/// <inheritdoc cref="IPaint{TDrawingContext}.RestoreOpacityMask(TDrawingContext, IPaintable{TDrawingContext})" />
public override void RestoreOpacityMask(SkiaSharpDrawingContext context, IPaintable <SkiaSharpDrawingContext> geometry)
{
if (context.PaintTask is null || context.Paint is null)
{
return;
}
var baseColor = context.PaintTask.Color;
context.Paint.Color = baseColor;
}
/// <inheritdoc cref="IPaintTask{TDrawingContext}.SetOpacity(TDrawingContext, IGeometry{TDrawingContext})" />
public override void SetOpacity(SkiaSharpDrawingContext context, IGeometry <SkiaSharpDrawingContext> geometry)
{
if (context.PaintTask is null || context.Paint is null)
{
return;
}
var baseColor = context.PaintTask.Color;
context.Paint.Color =
new SKColor(baseColor.Red, baseColor.Green, baseColor.Blue, unchecked ((byte)(255 * geometry.Opacity)));
}
public override void InitializeTask(SkiaSharpDrawingContext drawingContext)
{
if (skiaPaint == null)
{
skiaPaint = new SKPaint();
}
skiaPaint.Color = Color;
skiaPaint.IsAntialias = IsAntialias;
skiaPaint.IsStroke = IsStroke;
skiaPaint.StrokeWidth = StrokeWidth;
drawingContext.Paint = skiaPaint;
drawingContext.PaintTask = this;
}
/// <inheritdoc cref="IPaintTask{TDrawingContext}.ResetOpacity(TDrawingContext, IGeometry{TDrawingContext})" />
public override void ResetOpacity(SkiaSharpDrawingContext context, IGeometry <SkiaSharpDrawingContext> geometry)
{
if (context.PaintTask is null || context.Paint is null)
{
return;
}
if (ImageFilter is not null)
{
ImageFilter.Dispose();
}
var baseColor = context.PaintTask.Color;
context.Paint.Color = baseColor;
}
public override void OnDraw(SkiaSharpDrawingContext context, SKPaint paint)
{
// lets also draw a white circle as background before the svg path is drawn
// this will just make things look better
using (var backgroundPaint = new SKPaint())
{
backgroundPaint.Style = SKPaintStyle.Fill;
backgroundPaint.Color = SKColors.White;
var r = Width / 2;
context.Canvas.DrawCircle(X + r, Y + r, r, backgroundPaint);
}
base.OnDraw(context, paint);
}
/// <summary>
/// Creates the image filter.
/// </summary>
/// <param name="drawingContext">The drawing context.</param>
/// <exception cref="System.NotImplementedException"></exception>
public override void CreateFilter(SkiaSharpDrawingContext drawingContext)
{
var imageFilters = new SKImageFilter[_filters.Length];
var i = 0;
foreach (var item in _filters)
{
item.CreateFilter(drawingContext);
if (item.SKImageFilter is null)
{
throw new System.Exception("Image filter is not valid");
}
imageFilters[i++] = item.SKImageFilter;
}
SKImageFilter = SKImageFilter.CreateMerge(imageFilters, _cropRect);
}
/// <inheritdoc cref="IDrawableTask{TDrawingContext}.InitializeTask(TDrawingContext)" />
public override void InitializeTask(SkiaSharpDrawingContext drawingContext)
{
if (skiaPaint == null)
{
skiaPaint = new SKPaint();
}
var size = GetDrawRectangleSize(drawingContext);
var center = new SKPoint(size.Location.X + _center.X * size.Width, size.Location.Y + _center.Y * size.Height);
var r = size.Location.X + size.Width > size.Location.Y + size.Height
? size.Location.Y + size.Height
: size.Location.X + size.Width;
r *= _radius;
skiaPaint.Shader = SKShader.CreateRadialGradient(
center,
r,
_gradientStops,
_colorPos,
_tileMode);
skiaPaint.IsAntialias = IsAntialias;
skiaPaint.IsStroke = true;
skiaPaint.StrokeWidth = StrokeThickness;
skiaPaint.Style = IsStroke ? SKPaintStyle.Stroke : SKPaintStyle.Fill;
if (PathEffect != null)
{
PathEffect.CreateEffect(drawingContext);
skiaPaint.PathEffect = PathEffect.SKPathEffect;
}
if (ClipRectangle != RectangleF.Empty)
{
_ = drawingContext.Canvas.Save();
drawingContext.Canvas.ClipRect(
new SKRect(
ClipRectangle.X, ClipRectangle.Y, ClipRectangle.X + ClipRectangle.Width, ClipRectangle.Y + ClipRectangle.Height));
_drawingContext = drawingContext;
}
drawingContext.Paint = skiaPaint;
drawingContext.PaintTask = this;
}
/// <inheritdoc cref="IPaint{TDrawingContext}.InitializeTask(TDrawingContext)" />
public override void InitializeTask(SkiaSharpDrawingContext drawingContext)
{
skiaPaint ??= new SKPaint();
skiaPaint.Color = Color;
skiaPaint.IsAntialias = IsAntialias;
skiaPaint.IsStroke = IsStroke;
skiaPaint.StrokeCap = StrokeCap;
skiaPaint.StrokeJoin = StrokeJoin;
skiaPaint.StrokeMiter = StrokeMiter;
skiaPaint.StrokeWidth = StrokeThickness;
skiaPaint.Style = IsStroke ? SKPaintStyle.Stroke : SKPaintStyle.Fill;
if (FontFamily != null)
{
skiaPaint.Typeface = GetTypeFaceFromFontFamily();
}
if (PathEffect is not null)
{
PathEffect.CreateEffect(drawingContext);
skiaPaint.PathEffect = PathEffect.SKPathEffect;
}
if (ImageFilter is not null)
{
ImageFilter.CreateFilter(drawingContext);
skiaPaint.ImageFilter = ImageFilter.SKImageFilter;
}
var clip = GetClipRectangle(drawingContext.MotionCanvas);
if (clip != LvcRectangle.Empty)
{
_ = drawingContext.Canvas.Save();
drawingContext.Canvas.ClipRect(new SKRect(clip.X, clip.Y, clip.X + clip.Width, clip.Y + clip.Height));
_drawingContext = drawingContext;
}
drawingContext.Paint = skiaPaint;
drawingContext.PaintTask = this;
}
/// <summary> /// Creates the path effect. /// </summary> /// <param name="drawingContext">The drawing context.</param> public abstract void CreateEffect(SkiaSharpDrawingContext drawingContext);
/// <summary> /// Creates the image filter. /// </summary> /// <param name="drawingContext">The drawing context.</param> public abstract void CreateFilter(SkiaSharpDrawingContext drawingContext);
private SKRect GetDrawRectangleSize(SkiaSharpDrawingContext drawingContext)
{
return(new SKRect(0, 0, drawingContext.Info.Width, drawingContext.Info.Width));
}
/// <inheritdoc cref="IDrawableTask{TDrawingContext}.SetOpacity(TDrawingContext, IGeometry{TDrawingContext})" />
public override void SetOpacity(SkiaSharpDrawingContext context, IGeometry <SkiaSharpDrawingContext> geometry)
{
throw new System.NotImplementedException();
}
/// <summary>
/// Creates the path effect.
/// </summary>
/// <param name="drawingContext">The drawing context.</param>
public override void CreateEffect(SkiaSharpDrawingContext drawingContext)
{
SKPathEffect = SKPathEffect.CreateDash(_dashArray, _phase);
}
/// <summary>
/// Creates the image filter.
/// </summary>
/// <param name="drawingContext">The drawing context.</param>
public override void CreateFilter(SkiaSharpDrawingContext drawingContext)
{
SKImageFilter = SKImageFilter.CreateDropShadow(_dx, _dy, _sigmaX, _sigmaY, _color, _filter, _cropRect);
}
private SKRect GetDrawRectangleSize(SkiaSharpDrawingContext drawingContext)
{
return(ClipRectangle == null
? new SKRect(0, 0, drawingContext.Info.Width, drawingContext.Info.Width)
: new SKRect(ClipRectangle.X, ClipRectangle.Y, ClipRectangle.Width, ClipRectangle.Height));
}
/// <inheritdoc cref="IPaint{TDrawingContext}.ApplyOpacityMask(TDrawingContext, IPaintable{TDrawingContext})" />
public override void ApplyOpacityMask(SkiaSharpDrawingContext context, IPaintable <SkiaSharpDrawingContext> geometry)
{
throw new System.NotImplementedException();
}
/// <inheritdoc cref="Geometry.OnDraw(SkiaSharpDrawingContext, SKPaint)" />
public override void OnDraw(SkiaSharpDrawingContext context, SKPaint paint)
{
var rx = Width / 2f;
context.Canvas.DrawCircle(X + rx, Y + rx, rx, paint);
}
/// <summary>
/// Creates the filter.
/// </summary>
/// <param name="drawingContext">The drawing context.</param>
/// <returns></returns>
public override void CreateFilter(SkiaSharpDrawingContext drawingContext)
{
SKImageFilter = SKImageFilter.CreateBlur(_sigmaX, _sigmaY, _filter, _cropRect);
}
