public override void Draw(TCanvas canvas, TextAlignment alignment = TextAlignment.Center, Thickness padding = default, float offsetX = 0, float offsetY = 0)
{
var c = WrapCanvas(canvas);
UpdateDisplay(float.NaN);
DrawCore(c, Display, Display == null ? new PointF?() : IPainterExtensions.GetDisplayPosition(Display.Width, Display.Ascent, Display.Descent, FontSize, c.Width, c.Height, alignment, padding, offsetX, offsetY));
}
private void DrawCore(TCanvas canvas, float?width, TextAlignment alignment,
Thickness padding, float offsetX, float offsetY)
{
var c = WrapCanvas(canvas);
UpdateDisplay(width ?? c.Width);
if (ErrorMessage == null)
{
_relativeXCoordDisplay.Position =
_relativeXCoordDisplay.Position.Plus(IPainterExtensions.GetDisplayPosition(
System.Math.Max(_relativeXCoordDisplay.Width, _absoluteXCoordDisplay.Width),
System.Math.Max(_relativeXCoordDisplay.Ascent, _absoluteXCoordDisplay.Ascent),
System.Math.Max(_relativeXCoordDisplay.Descent, _absoluteXCoordDisplay.Descent),
FontSize, width ?? c.Width,
c.Height, alignment, padding, offsetX, offsetY
));
//offsetY is already included in _relativeXCoordDisplay.Position,
//no need to add it again below
_absoluteXCoordDisplay.Position =
new PointF(_absoluteXCoordDisplay.Position.X + offsetX,
_absoluteXCoordDisplay.Position.Y + _relativeXCoordDisplay.Position.Y);
Display = new ListDisplay <Fonts, Glyph>(new[] {
_relativeXCoordDisplay, _absoluteXCoordDisplay
});
}
DrawCore(c, Display);
}
private void DrawCore(TCanvas canvas, float?width, TextAlignment alignment,
Thickness padding, float offsetX, float offsetY)
{
var c = WrapCanvas(canvas);
UpdateDisplay(width ?? c.Width);
if (ErrorMessage == null)
{
_relativeXCoordDisplay.Position =
_relativeXCoordDisplay.Position.Plus(IPainterExtensions.GetDisplayPosition(
System.Math.Max(_relativeXCoordDisplay.Width, _absoluteXCoordDisplay.Width),
System.Math.Max(_relativeXCoordDisplay.Ascent, _absoluteXCoordDisplay.Ascent),
System.Math.Max(_relativeXCoordDisplay.Descent, _absoluteXCoordDisplay.Descent),
FontSize, width ?? c.Width,
c.Height, alignment, padding, offsetX, offsetY
));
var adjustedCanvasWidth =
float.IsInfinity(c.Width) || float.IsNaN(c.Width)
? System.Math.Max(_relativeXCoordDisplay.Displays.CollectionWidth(),
_absoluteXCoordDisplay.Displays.IsNonEmpty() ? _absoluteXCoordDisplay.Displays.Max(d => d.Width) : 0)
: c.Width;
// https://github.com/verybadcat/CSharpMath/issues/123
// Take into account padding, offset etc. on both sides
adjustedCanvasWidth -= _relativeXCoordDisplay.Position.X * 2;
float Δx = 0;
var y = float.NegativeInfinity;
var leftRightFlags = alignment & (TextAlignment.Left | TextAlignment.Right);
if (leftRightFlags != TextAlignment.Left)
{
foreach (var relDisplay in _relativeXCoordDisplay.Displays.Reverse())
{
if (relDisplay.Position.Y > y)
{
y = relDisplay.Position.Y;
var rightSpace = adjustedCanvasWidth - (relDisplay.Position.X + relDisplay.Width);
Δx = leftRightFlags switch
{
TextAlignment.Center => rightSpace / 2,
TextAlignment.Right => rightSpace,
_ => throw new InvalidCodePathException("The left flag has been set. This foreach loop should have been skipped.")
};
}
relDisplay.Position = new PointF(relDisplay.Position.X + Δx, y);
}
}
//offsetY is already included in _relativeXCoordDisplay.Position,
//no need to add it again below
_absoluteXCoordDisplay.Position =
new PointF(_absoluteXCoordDisplay.Position.X + offsetX,
_absoluteXCoordDisplay.Position.Y + _relativeXCoordDisplay.Position.Y);
Display = new ListDisplay <Fonts, Glyph>(new[] {
_relativeXCoordDisplay, _absoluteXCoordDisplay
});
}
DrawCore(c, Display);
}
