public void DrawString(RectangleD layout, string text, Cairo.Color color, ObjectFont font, StringTrimming trimming, HorizontalAlignment hAlign = HorizontalAlignment.Left, bool wrap = false)
{
double x = Math.Ceiling(layout.X * drawingScaleX);
double y = Math.Ceiling(layout.Y * drawingScaleY);
double width = Math.Floor(layout.Width * drawingScaleX);
double height = Math.Floor(layout.Height * drawingScaleY);
SetupPangoLayout(text, font, trimming, wrap ? (float?)width : null);
cairoContext.Save();
cairoContext.Rectangle(x, y, width, height);
cairoContext.Clip();
cairoContext.Antialias = Antialias.None;
Pango.Rectangle ink, logical;
pangoLayout.GetPixelExtents(out ink, out logical);
if (ink.X < 0)
{
x -= ink.X;
logical.Width -= ink.X;
}
switch (hAlign)
{
case HorizontalAlignment.Left:
pangoLayout.Alignment = Alignment.Left;
break;
case HorizontalAlignment.Center:
pangoLayout.Alignment = Alignment.Center;
if (width > logical.Width)
{
x += (width - logical.Width) / 2;
}
break;
case HorizontalAlignment.Right:
pangoLayout.Alignment = Alignment.Right;
if (width > logical.Width)
{
x += width - logical.Width;
}
break;
}
cairoContext.MoveTo(x, y);
cairoContext.Color = color;
cairoContext.ShowLayout(pangoLayout);
cairoContext.Restore();
}
void Render()
{
if (layout == null)
{
return;
}
if (wrap)
{
layout.Width = (int)(Allocation.Width * Pango.Scale.PangoScale);
}
else
{
layout.Width = int.MaxValue;
}
Rectangle ink, log;
layout.GetPixelExtents(out ink, out log);
HeightRequest = ink.Y + ink.Height + 3;
if (!wrap)
{
WidthRequest = ink.X + ink.Width + 3;
}
}
