protected override void OnPaintSurface(SKPaintSurfaceEventArgs args)
{
var info = args.Info;
var canvas = args.Surface.Canvas;
canvas.Clear();
var lineSize = (info.Width / TotalProgress) * 0.75f;
var lineSizeHalf = lineSize * 0.5f;
BackgroundPaint.StrokeWidth = lineSize;
ForegroundPaint.StrokeWidth = lineSize;
ForegroundPaint.StrokeCap = SKStrokeCap.Round;
var rect = new SKRect(lineSize, 0, info.Width - lineSize, info.Height);
var textRect = new SKRect();
TextPaint.MeasureText("0", ref textRect);
var verticalSpace = rect.Height * 0.1f;
var bottom = rect.Bottom - lineSizeHalf - (textRect.Height + verticalSpace);
var top = rect.Top + lineSizeHalf + (textRect.Height + verticalSpace);
var regularHeight = (bottom - top) * 0.65f;
var xPosInterval = rect.Width / (TotalProgress - 1);
for (var i = 0; i < TotalProgress; i++)
{
var xPos = rect.Left + xPosInterval * i;
// Draw Labels
if (i == 0)
{
// Start Label
const string progressText = "0";
canvas.DrawText(progressText,
XPosInsideBounds(xPos, textRect, info),
rect.Bottom - 2,
TextPaint);
}
else if (i == TotalProgress - 1)
{
// End Label
var progressText = TotalProgress.ToString();
TextPaint.MeasureText(progressText, ref textRect);
canvas.DrawText(progressText,
XPosInsideBounds(xPos, textRect, info),
rect.Bottom - 2,
TextPaint);
}
if (i + 1 < Progress)
{
// Draw Foreground
canvas.DrawLine(xPos, bottom - regularHeight, xPos, bottom, ForegroundPaint);
}
else if (i + 1 == Progress)
{
// Draw Current Progress
canvas.DrawLine(xPos, top, xPos, bottom, ForegroundPaint);
TextPaint.Color = TextPaint.Color.WithAlpha(255);
var progressText = Progress.ToString();
TextPaint.MeasureText(progressText, ref textRect);
canvas.DrawText(progressText,
XPosInsideBounds(xPos, textRect, info),
rect.Top + textRect.Height,
ActiveTextPaint);
}
else
{
// Draw Background
canvas.DrawLine(xPos, bottom - regularHeight, xPos, bottom, BackgroundPaint);
}
}
}
