public override void Render(ISurface surface)
{
var contextSurface = (ContextSurface)surface;
if (string.IsNullOrEmpty(this.Text))
{
return;
}
var matrix = contextSurface.Matrix;
if (matrix.M11 < 0.2d || matrix.M22 < 0.2d)
{
return;
}
var ctx = contextSurface.Context;
var style = this.Style;
var shape = this.OuterShape;
var font = Style.Font;
if (AlignText && shape is IVectorShape)
{
var vector = ((IVectorShape)shape).Data;
var f = ctx.DpiFactor();
var width = Vector.Length(vector);
var height = Math.Ceiling(font.Size);
var text = new TextLayout(ctx);
text.Trimming = TextTrimming.WordElipsis;
text.Text = this.Text;
text.Font = font;
var size = text.GetSize();
width = Math.Min(size.Width, width);
height = Math.Max(size.Height, height);
text.Width = width;
text.Height = height;
var c = new Point(
(vector.Start.X + (vector.End.X - vector.Start.X) / 2d),
(vector.Start.Y + (vector.End.Y - vector.Start.Y) / 2d));
ctx.Save();
ctx.Translate(c.X, c.Y);
ctx.Rotate(Vector.Angle(vector));
ctx.SetColor(style.TextColor);
ctx.SetLineWidth(1);
ctx.DrawTextLayout(text, -width / 2d, -height / 2d);
ctx.Restore();
}
else
{
var rect = shape.BoundsRect.Padding(Style.Padding);
ContextPainterExtensions.DrawText(ctx, rect, this.Text, font, style.TextColor);
}
}
protected virtual void SetRoundedRect(Context ctx, Rectangle rectangle, double radius)
{
// if corner radius is less than or equal to zero,
// return the original Rectangle
if (radius <= 0.0d)
{
ctx.Rectangle(rectangle);
return;
}
// if the corner radius is greater than or equal to
// half the width, or height (whichever is shorter)
// then return a capsule instead of a lozenge
if (radius >= (Math.Min(rectangle.Width, rectangle.Height)) / 2.0)
{
DrawCapsule(ctx, rectangle);
return;
}
ContextPainterExtensions.DrawRoundedRect(ctx, rectangle, radius);
ctx.ClosePath();
}