/// <summary>
/// Replace this event when creating a custom descendant of FlexCelPrintDocument.
/// </summary>
/// <param name="e"></param>
protected virtual void OnGetPrinterHardMargins(PrintHardMarginsEventArgs e)
{
if (GetPrinterHardMargins != null)
{
GetPrinterHardMargins(this, e);
}
}
/// <summary>
/// This event will adjust for a better position on the page for some printers.
/// It is not normally necessary, and it has to make an unmanaged call to GetDeviceCaps,
/// but it is given here as an example of how it could be done.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void flexCelPrintDocument1_GetPrinterHardMargins(object sender, FlexCel.Render.PrintHardMarginsEventArgs e)
{
const int PHYSICALOFFSETX = 112;
const int PHYSICALOFFSETY = 113;
double DpiX = e.Graphics.DpiX;
double DpiY = e.Graphics.DpiY;
IntPtr Hdc = e.Graphics.GetHdc();
try
{
e.XMargin = (float)(GetDeviceCaps(Hdc, PHYSICALOFFSETX) * 100.0 / DpiX);
e.YMargin = (float)(GetDeviceCaps(Hdc, PHYSICALOFFSETY) * 100.0 / DpiY);
}
finally
{
e.Graphics.ReleaseHdc(Hdc);
}
}
private RectangleF ConvertToMargins(Graphics aGraphics, Rectangle PageBounds, RectangleF VisibleRecInches100, bool Rotate90)
{
int w = Rotate90? PageBounds.Height: PageBounds.Width;
int h = Rotate90? PageBounds.Width: PageBounds.Height;
float vw = Rotate90? VisibleRecInches100.Height: VisibleRecInches100.Width;
float vh = Rotate90? VisibleRecInches100.Width: VisibleRecInches100.Height;
PrintHardMarginsEventArgs ex = new PrintHardMarginsEventArgs(aGraphics,
(w - vw) / 2f,
(h - vh) / 2f
);
if (ex.XMargin > 0 || ex.YMargin > 0) //Avoid calling when preview.
{
OnGetPrinterHardMargins(ex);
}
return(new RectangleF(ex.XMargin, ex.YMargin,
vw,
vh));
}
