private void DrawThumb(ref ThumbDraw thumbDraw, RangeSliderThumbOptions thumbOptions)
{
// Colors
thumbDraw.Paint.Color = SKColor.Parse((thumbOptions.BackgroundColor ?? _defaultColor));
thumbDraw.ValueTextDraw.Paint.Color = SKColor.Parse((thumbOptions.TextColor ?? _defaultColor));
float percentage = GetXPercentage(thumbOptions);
if (percentage == -1f)
{
return;
}
// Calculate thumb bounds
thumbDraw.Radius = _thumbsCanvasInfo.ImageInfo.Rect.MidY
- (_thumbsCanvasInfo.ImageInfo.Rect.MidY * 0.5f);
thumbDraw.Point = new SKPoint
{
X = percentage * _thumbsCanvasInfo.ImageInfo.Width,
Y = _thumbsCanvasInfo.ImageInfo.Rect.MidY
};
CheckThumbBounds(ref thumbDraw);
_thumbsCanvasInfo.Canvas.DrawCircle(thumbDraw.Point, thumbDraw.Radius, thumbDraw.Paint);
}
private float GetXPercentage(RangeSliderThumbOptions thumbOptions)
{
// Check values
if (!HasValues())
{
return(-1);
}
// Calculate value index
int index = Values.FindIndex(v => v == thumbOptions.Value);
_lastPercentage = (float)index / (Values.Count - 1);
return(_lastPercentage);
}
private void DrawThumbIcon(ref ThumbDraw thumbDraw, RangeSliderThumbOptions thumbOptions)
{
// Set size
thumbDraw.IconTextDraw.Paint.TextSize = thumbDraw.Radius * 0.75f;
// Measure
thumbDraw.IconTextDraw.Paint.MeasureText(thumbOptions.Icon,
ref thumbDraw.IconTextDraw.Bounds);
// Update paint
thumbDraw.IconTextDraw.Paint.Color = SKColor.Parse(thumbOptions.IconColor ?? _defaultColor);
// Draw
var point = new SKPoint
{
X = thumbDraw.Point.X - Math.Abs(thumbDraw.IconTextDraw.Bounds.MidX),
Y = thumbDraw.Point.Y + Math.Abs(thumbDraw.IconTextDraw.Bounds.MidY)
};
_thumbsCanvasInfo.Canvas.DrawText(thumbOptions.Icon,
point,
thumbDraw.IconTextDraw.Paint);
}