/// <summary>
/// Calculates the size.
/// </summary>
/// <returns>The size.</returns>
/// <param name="size">Size.</param>
/// <param name="width">Width.</param>
/// <param name="height">Height.</param>
public static SKSize CalcSize(SkiaSharp.SKSize size, double width, double height)
{
double w;
double h;
if (width <= 0 && height <= 0)
{
return(size);
}
else if (width <= 0)
{
h = height;
w = height * (size.Width / size.Height);
}
else if (height <= 0)
{
w = width;
h = width * (size.Height / size.Width);
}
else
{
w = width;
h = height;
}
return(new SkiaSharp.SKSize((float)w, (float)h));
}
/// <summary>
/// Calculates the scale.
/// </summary>
/// <returns>The scale.</returns>
/// <param name="originalSize">Original size.</param>
/// <param name="scaledSize">Scaled size.</param>
/// <param name="screenScale">Screen scale.</param>
public static Tuple <float, float> CalcScale(SkiaSharp.SKSize originalSize, SkiaSharp.SKSize scaledSize, float screenScale)
{
var sx = scaledSize.Width * screenScale / originalSize.Width;
var sy = scaledSize.Height * screenScale / originalSize.Height;
return(new Tuple <float, float>((float)sx, (float)sy));
}
public void Inflate(SKSize size)
{
Inflate(size.Width, size.Height);
}
private SKRect AspectResize(SKSize size, bool fit)
{
if (size.Width == 0 || size.Height == 0 || Width == 0 || Height == 0)
return SKRect.Create(MidX, MidY, 0, 0);
float aspectWidth = size.Width;
float aspectHeight = size.Height;
float imgAspect = aspectWidth / aspectHeight;
float fullRectAspect = Width / Height;
bool compare = fit ? (fullRectAspect > imgAspect) : (fullRectAspect < imgAspect);
if (compare)
{
aspectHeight = Height;
aspectWidth = aspectHeight * imgAspect;
}
else
{
aspectWidth = Width;
aspectHeight = aspectWidth / imgAspect;
}
float aspectLeft = MidX - (aspectWidth / 2f);
float aspectTop = MidY - (aspectHeight / 2f);
return SKRect.Create(aspectLeft, aspectTop, aspectWidth, aspectHeight);
}
public SKRect AspectFill(SKSize size) => AspectResize(size, false);
public SKRect AspectFit(SKSize size) => AspectResize(size, true);
public static SKSize Subtract(SKSize sz1, SKSize sz2) => sz1 - sz2;
public static SKSize Add(SKSize sz1, SKSize sz2) => sz1 + sz2;
public void Inflate(SKSize size)
{
Inflate(size.Width, size.Height);
}
public static SKPoint Add(SKPoint pt, SKSize sz) => pt + sz;
public void DrawOval(SKPoint c, SKSize r, SKPaint paint)
{
DrawOval(c.X, c.Y, r.Width, r.Height, paint);
}
public void DrawRoundRect(SKRect rect, SKSize r, SKPaint paint)
{
DrawRoundRect(rect, r.Width, r.Height, paint);
}
public SKSvg(float pixelsPerInch, SKSize canvasSize)
: base(pixelsPerInch, canvasSize)
{
}
public SKSvg(SKSize canvasSize)
: base(canvasSize)
{
}
public static SKRect Create(SKPoint location, SKSize size)
{
return SKRect.Create(location.X, location.Y, size.Width, size.Height);
}
public static SKPoint Subtract(SKPoint pt, SKSize sz) => pt - sz;
public static SKRect Create(SKSize size)
{
return SKRect.Create(SKPoint.Empty, size);
}
public void Deflate(SKSize size)
{
Deflate(size.Width, size.Height);
}
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