Cairo.Context.Restore C# (CSharp) Метод

        public void Restore()
        {
            CheckDisposed ();
            NativeMethods.cairo_restore (handle);
        }

    //draw bar with specific (w)idth, (h)eight, grayscale (c)olor and fill level
    public void drawbar(Cairo.Context context, int w, int h, int c, double fill)
    {
        context.Save();
        context.LineWidth = 0.75;
        //Fill the area
        double gray_value = ColorChan(c);

        context.SetSourceRGB(gray_value, gray_value, gray_value);
        context.Rectangle(0, 0, w, h);
        context.Fill();
        //White color
        context.SetSourceRGB(1, 1, 1);
        //Updated coordinates with offset
        int h0 = 10, x0 = 10, w0 = w - x0, y0 = (h - 10) / 2, w1 = w0 - x0;

        context.Rectangle(x0, y0, w1, h0);
        context.Fill();
        //Fill the bar
        double r = ColorChan(255), g = ColorChan(186), b = ColorChan(0);

        context.SetSourceRGB(r, g, b);
        context.Rectangle(x0, y0, w1 * fill, h0);
        context.Fill();
        //Draw shadow of the bar
        gray_value = 0.2;
        for (int i = 0; i < 3; ++i)
        {
            context.SetSourceRGB(gray_value, gray_value, gray_value);
            drawshadow(context, x0 + i, y0 + i, w0 + i, h0 + i);
            context.LineWidth -= 0.2;
            gray_value        += 0.3;
        }
        context.Restore();
    }