// Draw a set of horizontal hatching lines at the given spacing with
// the given pen. A line should be centered on the zero y coordinate.
void DrawHatchLines(GraphicsTarget g, Pen pen, float spacing, RectangleF boundingRect, RenderOptions renderOpts)
{
double firstLine = Math.Round(boundingRect.Top / spacing) * spacing;
double lastLine = (Math.Round(boundingRect.Bottom / spacing) + 0.5) * spacing;
for (double y = firstLine; y <= lastLine; y += spacing) {
g.DrawLine(pen, new PointF(boundingRect.Left, (float) y), new PointF(boundingRect.Right, (float) y));
}
}
// Draw an underline under the text, if applicable.
private void DrawUnderline(GraphicsTarget g, SymColor color, float baseline, float width, float indent)
{
if (underline.underlineOn && color == underline.underlineColor) {
// Figure out the left and right sides of the underline.
float l, r;
if (fontAlign == TextSymDefAlignment.Right)
l = -width;
else if (fontAlign == TextSymDefAlignment.Center)
l = -(width / 2F);
else
l = indent;
r = l + width;
// figure out y coordinate of line.
float y = baseline + underline.underlineDistance + underline.underlineWidth / 2;
// draw the line.
g.DrawLine(underlinePen, new PointF(l, y), new PointF(r, y));
}
}
