/// <summary>
/// Draws text with metrics.
/// </summary>
/// <param name="text">The text.</param>
/// <param name="font">The font.</param>
/// <param name="fontSize">Size of the font.</param>
/// <param name="expectedWidth">The expected width.</param>
/// <param name="expectedHeight">The expected height.</param>
/// <param name="baseline">The baseline position.</param>
/// <param name="xheight">The x-height position.</param>
/// <param name="ascent">The ascent position.</param>
/// <param name="descent">The descent position.</param>
/// <param name="before">The before position.</param>
/// <param name="after">The after position.</param>
/// <param name="platform">The platform.</param>
/// <returns>
/// A plot model.
/// </returns>
private static PlotModel DrawTextWithMetrics(string text, string font, double fontSize, double expectedWidth, double expectedHeight, double baseline, double xheight, double ascent, double descent, double before, double after, string platform)
{
// http://msdn.microsoft.com/en-us/library/ms742190(v=vs.110).aspx
// http://msdn.microsoft.com/en-us/library/xwf9s90b(v=vs.110).aspx
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms533824(v=vs.85).aspx
// https://developer.apple.com/library/mac/documentation/TextFonts/Conceptual/CocoaTextArchitecture/FontHandling/FontHandling.html
var model = new PlotModel();
model.Annotations.Add(
new DelegateAnnotation(
rc =>
{
var size = rc.MeasureText(text, font, fontSize);
var expectedSize = new OxySize(expectedWidth, expectedHeight);
rc.DrawText(new ScreenPoint(300, 50), "Font size: " + fontSize, OxyColors.Black, font, 12);
rc.DrawText(new ScreenPoint(300, 70), "Actual size: " + size.ToString("0.00", CultureInfo.InvariantCulture), OxyColors.Black, font, 12);
rc.DrawText(new ScreenPoint(300, 90), "Size on " + platform + ": " + expectedSize.ToString("0.00", CultureInfo.InvariantCulture), OxyColors.Green, font, 12);
var p = new ScreenPoint(20, 50);
rc.DrawText(p, text, OxyColors.Black, font, fontSize);
rc.FillCircle(p, 3, OxyColors.Black);
// actual bounds
rc.DrawRectangle(new OxyRect(p, size), OxyColors.Undefined, OxyColors.Black);
// Expected bounds (WPF)
rc.DrawRectangle(new OxyRect(p, expectedSize), OxyColors.Undefined, OxyColors.Green);
var color = OxyColor.FromAColor(180, OxyColors.Red);
var pen = new OxyPen(color);
// Expected vertical positions (WPF)
var x1 = p.X - 10;
var x2 = p.X + expectedSize.Width + 10;
rc.DrawLine(x1, baseline, x2, baseline, pen);
rc.DrawLine(x1, xheight, x2, xheight, pen);
rc.DrawLine(x1, ascent, x2, ascent, pen);
rc.DrawLine(x1, descent, x2, descent, pen);
// Expected horizonal positions (WPF)
var y1 = p.Y - 10;
var y2 = p.Y + expectedSize.Height + 10;
rc.DrawLine(before, y1, before, y2, pen);
rc.DrawLine(after, y1, after, y2, pen);
}));
model.MouseDown += (s, e) => Debug.WriteLine(e.Position);
return(model);
}
