public void Paint(System.Drawing.Graphics g, int x, int y, int width, int height)
{
g.FillRectangle(fillBrush, x, y, width, height);
if (formula != null)
{
formula.Draw(g);
}
g.DrawRectangle(rectPen, x, y, width - 1, height - 1);
}
private void paintDeriv()
{
Graphics g = Graphics.FromImage(derivImage);
g.FillRectangle(fillBrush, derivRect.Left, derivRect.Top, derivRect.Width, derivRect.Height);
if (derivFormula != null)
{
derivFormula.Draw(g);
}
g.DrawRectangle(rectPen, derivRect.Left, derivRect.Top, derivRect.Width - 1, derivRect.Height - 1);
}
/// <summary>
/// Creates image from formula
/// </summary>
/// <param name="formula">Formula</param>
/// <returns>Image</returns>
public static Image CreateImage(string formula)
{
Image im = new Bitmap(10, 10);
Graphics g = Graphics.FromImage(im);
SimpleSymbolDrawable.Prepare(new int[] { 8, 6, 5, 4 }, g);
MathFormulaDrawable f = new MathFormulaDrawable(MathFormula.FromString(new int[] { 8, 6, 5, 4 }, formula), DrawableConverter.Object);
f.CalculateFullRelativeRectangle();
Rectangle r = f.FullRelativeRectangle;
Point p = new Point(10, -r.Y);
f.Position = p;
f.CalculatePositions();
im = new Bitmap(r.Width + 20, r.Height);
Brush brush = new SolidBrush(Color.White);
g = Graphics.FromImage(im);
g.FillRectangle(brush, 0, 0, im.Width, im.Height);
f.Draw(g);
SimpleSymbolDrawable.Prepare(MathSymbolFactory.Sizes, g);
g.Dispose();
return(im);
}