/// ------------------------------------------------------------------------------------
/// <summary>
/// Sets the margins in the specified print context. The PrintPageEventArgs contains
/// a rectangle of the printable part of the page. Hence, the difference between the
/// page's rectangle and the margin's rectangle gives you the size of the margins.
/// However, the print context object wants the margins in terms of the size of the
/// gap between the edge of the paper and it's nearest margin. For example, if there are
/// one inch margins all around, the print context wants all its margins set to one
/// inch.
/// </summary>
/// <param name="e"></param>
/// ------------------------------------------------------------------------------------
private void SetMargins(PrintPageEventArgs e)
{
int dpiX = (int)e.Graphics.DpiX;
int dpiY = (int)e.Graphics.DpiY;
Rectangle margins = e.MarginBounds;
Rectangle page = e.PageBounds;
Rectangle printable = new Rectangle(
(int)e.Graphics.VisibleClipBounds.Left,
(int)e.Graphics.VisibleClipBounds.Top,
(int)e.Graphics.VisibleClipBounds.Width,
(int)e.Graphics.VisibleClipBounds.Height);
// Get the top and left unprintable areas. For many printers that's a value
// between 0.25 and 0.5 inches.
IntPtr hdc = e.Graphics.GetHdc();
int unprintableLeft = GetDeviceCaps(hdc, PHYSICALOFFSETX);
int unprintableTop = GetDeviceCaps(hdc, PHYSICALOFFSETY);
e.Graphics.ReleaseHdc(hdc);
// To be useful, the printable rectangle needs to be offset so it indicates
// the actual part of the page where we can print. The offsets we got above
// are in pixels, convert to 100ths of an inch like the other coords we have here.
printable.Offset(unprintableLeft * 100 / dpiX, unprintableTop * 100 / dpiY);
m_vwPrintContext.SetMargins(
PixelsFrom100ths(margins.Left - printable.Left, dpiX),
PixelsFrom100ths(printable.Right - margins.Right, dpiX),
PixelsFrom100ths((margins.Top - printable.Top) / 2, dpiY), // heading; get from smarter page setup?
PixelsFrom100ths(margins.Top - printable.Top, dpiY), // top
PixelsFrom100ths(printable.Bottom - margins.Bottom, dpiY), // bottom
PixelsFrom100ths((printable.Bottom - margins.Bottom) / 2, dpiY)); // footer; get from smarter page setup?
}
private void SetMargins(PrintPageEventArgs e)
{
int dpiX = (int)e.Graphics.DpiX;
int dpiY = (int)e.Graphics.DpiY;
Rectangle margins = e.MarginBounds;
Rectangle page = e.PageBounds;
bool landscape = e.PageSettings.Landscape;
Rectangle printable = new Rectangle(
(int)e.Graphics.VisibleClipBounds.Left,
(int)e.Graphics.VisibleClipBounds.Top,
(int)e.Graphics.VisibleClipBounds.Width,
(int)e.Graphics.VisibleClipBounds.Height);
// To be useful, the printable rectangle needs to be offset so it indicates
// the actual part of the page where we can print.
printable.Offset((int)(e.PageSettings.HardMarginX), (int)(e.PageSettings.HardMarginY));
Rectangle relative;
if (MiscUtils.IsUnix)
{
dpiX = 72;
dpiY = 72;
if (landscape)
{
page = new Rectangle(e.PageBounds.Y, e.PageBounds.X, e.PageBounds.Height, e.PageBounds.Width);
}
relative = page;
}
else
{
relative = printable;
}
m_vwPrintContext.SetMargins(
PixelsFrom100ths(margins.Left - relative.Left, dpiX),
PixelsFrom100ths(relative.Right - margins.Right, dpiX),
PixelsFrom100ths((margins.Top - relative.Top) / 2, dpiY), // heading; get from smarter page setup?
PixelsFrom100ths(margins.Top - relative.Top, dpiY), // top
PixelsFrom100ths(relative.Bottom - margins.Bottom, dpiY), // bottom
PixelsFrom100ths((relative.Bottom - margins.Bottom) / 2, dpiY)); // footer; get from smarter page setup?
}
