public void DrawText(Point anchor, TextAlignment alignment, IList <TextRun> textRuns)
{
var font = new Font(SystemFonts.Find("Arial"), 12);
image.Mutate(ctx =>
{
foreach (var textRun in textRuns)
{
ctx.DrawText(textRun.Text, font, Black, anchor.ToPointF());
}
});
}
public void DrawEllipse(Point centre, double radiusX, double radiusY, double thickness, bool fill = false)
{
image.Mutate(ctx => ctx.Draw(Black, 2.0f, new EllipsePolygon(centre.ToPointF(), new SizeF((float)radiusX * 2, (float)radiusY * 2))));
}
public void DrawText(Point anchor, TextAlignment alignment, IList <TextRun> textRuns)
{
var font = new Font(fontFamily, 12);
image.Mutate(ctx =>
{
float totalWidth = 0f;
float totalHeight = 0f;
foreach (TextRun run in textRuns)
{
Font renderFont = font;
if (run.Formatting.FormattingType == TextRunFormattingType.Subscript)
{
renderFont = new Font(font.Family, font.Size / 1.5f);
}
var dimensions = TextMeasurer.MeasureBounds(run.Text, new RendererOptions(renderFont));
totalWidth += dimensions.Width;
totalHeight = Math.Max(totalHeight, dimensions.Bottom);
}
var startLocation = anchor.ToPointF();
if (alignment == TextAlignment.TopCentre || alignment == TextAlignment.CentreCentre || alignment == TextAlignment.BottomCentre)
{
startLocation.X -= totalWidth / 2;
}
else if (alignment == TextAlignment.TopRight || alignment == TextAlignment.CentreRight || alignment == TextAlignment.BottomRight)
{
startLocation.X -= totalWidth;
}
if (alignment == TextAlignment.CentreLeft || alignment == TextAlignment.CentreCentre || alignment == TextAlignment.CentreRight)
{
startLocation.Y -= totalHeight / 2;
}
else if (alignment == TextAlignment.BottomLeft || alignment == TextAlignment.BottomCentre || alignment == TextAlignment.BottomRight)
{
startLocation.Y -= totalHeight;
}
float horizontalOffsetCounter = 0;
foreach (TextRun run in textRuns)
{
var renderFont = font;
var renderLocation = new PointF(startLocation.X + horizontalOffsetCounter, startLocation.Y);
if (run.Formatting.FormattingType == TextRunFormattingType.Subscript)
{
renderFont = new Font(font.Family, font.Size / 1.5f);
renderLocation.X = renderLocation.X + 3f;
}
else if (run.Formatting.FormattingType == TextRunFormattingType.Superscript)
{
renderFont = new Font(font.Family, font.Size / 1.5f);
renderLocation.X = renderLocation.X - 3f;
}
ctx.DrawText(run.Text, font, NamedColors <Argb32> .Black, renderLocation);
horizontalOffsetCounter += TextMeasurer.MeasureBounds(run.Text, new RendererOptions(renderFont)).Width;
}
});
}