private void PrintPreview(SamplePrintType printType, String documentName)
{
this.samplePrintType = printType;
document.DocumentName = documentName;
this.printPreviewDialog.Document = this.document;
// Call the ShowDialog method. This will trigger the document's
// PrintPage event.
this.printPreviewDialog.ShowDialog(this);
}
private void HelperPrint(Graphics g, SamplePrintType printType, bool isPreview, RectangleF printerArea)
{
float width = (float)imageXView1.Image.ImageXData.Width;
float height = (float)imageXView1.Image.ImageXData.Height;
imageXView1.Image.ImageXData.Resolution.Units = GraphicsUnit.Inch;
double resx = Math.Round(imageXView1.Image.ImageXData.Resolution.Dimensions.Width);
double resy = Math.Round(imageXView1.Image.ImageXData.Resolution.Dimensions.Height);
// Printable area for printers is in 1/100th of an inch, convert to inches
printerArea.X /= 100;
printerArea.Y /= 100;
printerArea.Width /= 100;
printerArea.Height /= 100;
// put the graphics into inches for convenience
g.PageUnit = GraphicsUnit.Inch;
// put width and height of image in terms of inches
width = (float)(width / resx);
height = (float)(height / resy);
// default to upper right
float x = 0.0f;
float y = 0.0f;
float interSpacing = 0.25f; // spacing between images
float topBottomSpacing = 0.0f; // spacing before first image and after second image
float scaleFactor = 1.0f;
float oldValue = 0.0f;
// keep the preview looking similiar to the hardcopy
if (isPreview)
{
x = printerArea.X;
y = printerArea.Y;
}
switch (printType)
{
case SamplePrintType.Centered:
// allow for larger images, let both checks happen, may need to scale in both directions
if (height > printerArea.Height)
{
oldValue = height;
height = printerArea.Height;
scaleFactor = height / oldValue;
width *= scaleFactor;
}
if (width > printerArea.Width)
{
oldValue = width;
width = printerArea.Width;
scaleFactor = width / oldValue;
height *= scaleFactor;
}
x += (printerArea.Width - width) / 2;
y += (printerArea.Height - height) / 2;
imageXView1.Print(g, new RectangleF(x, y, width, height));
break;
case SamplePrintType.TwoBy:
// trying to keep this simple, but allow for large images
if (((height * 2) + interSpacing) > printerArea.Height)
{
oldValue = height;
height = (printerArea.Height / 2) - (interSpacing / 2);
scaleFactor = height / oldValue;
width *= scaleFactor;
}
if (width > printerArea.Width)
{
oldValue = width;
width = printerArea.Width;
scaleFactor = width / oldValue;
height *= scaleFactor;
}
interSpacing = (float)(printerArea.Height - (height * 2));
if (interSpacing >= 0.25f * 3)
{
interSpacing /= 3;
topBottomSpacing = interSpacing;
}
else
{
topBottomSpacing = (interSpacing - 0.25f) / 2;
if (topBottomSpacing < 0)
{
topBottomSpacing = 0;
}
interSpacing = 0.25f;
}
x += (printerArea.Width - width) / 2;
y += topBottomSpacing;
imageXView1.Print(g, new RectangleF(x, y, width, height));
y += (height + interSpacing);
imageXView1.Print(g, new RectangleF(x, y, width, height));
break;
case SamplePrintType.FullPage:
imageXView1.Print(g, new RectangleF(x, y, printerArea.Width, printerArea.Height));
break;
}
}
