// ---------------------------------------------------------------------------
public void Write(Stream stream)
{
using (ZipFile zip = new ZipFile())
{
// previous example
Stationery s = new Stationery();
byte[] stationary = s.CreatePdf(s.CreateStationary());
// reader for the src file
PdfReader reader = new PdfReader(stationary);
// initializations
int pow = 1;
do
{
Rectangle pageSize = reader.GetPageSize(1);
Rectangle newSize = (pow % 2) == 0
? new Rectangle(pageSize.Width, pageSize.Height)
: new Rectangle(pageSize.Height, pageSize.Width)
;
Rectangle unitSize = new Rectangle(pageSize.Width, pageSize.Height);
for (int i = 0; i < pow; i++)
{
unitSize = new Rectangle(unitSize.Height / 2, unitSize.Width);
}
int n = (int)Math.Pow(2, pow);
int r = (int)Math.Pow(2, pow / 2);
int c = n / r;
using (MemoryStream ms = new MemoryStream())
{
// step 1
using (Document document = new Document(newSize, 0, 0, 0, 0))
{
// step 2
PdfWriter writer = PdfWriter.GetInstance(document, ms);
// step 3
document.Open();
// step 4
PdfContentByte cb = writer.DirectContent;
PdfImportedPage page;
Rectangle currentSize;
float offsetX, offsetY, factor;
int total = reader.NumberOfPages;
for (int i = 0; i < total;)
{
if (i % n == 0)
{
document.NewPage();
}
currentSize = reader.GetPageSize(++i);
factor = Math.Min(
unitSize.Width / currentSize.Width,
unitSize.Height / currentSize.Height
);
offsetX = unitSize.Width * ((i % n) % c)
+ (unitSize.Width - (currentSize.Width * factor)) / 2f
;
offsetY = newSize.Height
- (unitSize.Height * (((i % n) / c) + 1))
+ (unitSize.Height - (currentSize.Height * factor)) / 2f
;
page = writer.GetImportedPage(reader, i);
cb.AddTemplate(page, factor, 0, 0, factor, offsetX, offsetY);
}
}
zip.AddEntry(string.Format(RESULT, n), ms.ToArray());
++pow;
}
} while (pow < 5);
zip.AddEntry(Utility.ResultFileName(s.ToString() + ".pdf"), stationary);
zip.Save(stream);
}
}
// ---------------------------------------------------------------------------
public void Write(Stream stream)
{
using (ZipFile zip = new ZipFile())
{
// previous example
Stationery s = new Stationery();
byte[] stationary = s.CreatePdf(s.CreateStationary());
// reader for the src file
PdfReader reader = new PdfReader(stationary);
// initializations
int pow = 1;
do
{
Rectangle pageSize = reader.GetPageSize(1);
Rectangle newSize = (pow % 2) == 0
? new Rectangle(pageSize.Width, pageSize.Height)
: new Rectangle(pageSize.Height, pageSize.Width)
;
Rectangle unitSize = new Rectangle(pageSize.Width, pageSize.Height);
for (int i = 0; i < pow; i++)
{
unitSize = new Rectangle(unitSize.Height / 2, unitSize.Width);
}
int n = (int)Math.Pow(2, pow);
int r = (int)Math.Pow(2, pow / 2);
int c = n / r;
using (MemoryStream ms = new MemoryStream())
{
// step 1
using (Document document = new Document(newSize, 0, 0, 0, 0))
{
// step 2
PdfWriter writer = PdfWriter.GetInstance(document, ms);
// step 3
document.Open();
// step 4
PdfContentByte cb = writer.DirectContent;
PdfImportedPage page;
Rectangle currentSize;
float offsetX, offsetY, factor;
int total = reader.NumberOfPages;
for (int i = 0; i < total; )
{
if (i % n == 0)
{
document.NewPage();
}
currentSize = reader.GetPageSize(++i);
factor = Math.Min(
unitSize.Width / currentSize.Width,
unitSize.Height / currentSize.Height
);
offsetX = unitSize.Width * ((i % n) % c)
+ (unitSize.Width - (currentSize.Width * factor)) / 2f
;
offsetY = newSize.Height
- (unitSize.Height * (((i % n) / c) + 1))
+ (unitSize.Height - (currentSize.Height * factor)) / 2f
;
page = writer.GetImportedPage(reader, i);
cb.AddTemplate(page, factor, 0, 0, factor, offsetX, offsetY);
}
}
zip.AddEntry(string.Format(RESULT, n), ms.ToArray());
++pow;
}
} while (pow < 5);
zip.AddEntry(Utility.ResultFileName(s.ToString() + ".pdf"), stationary);
zip.Save(stream);
}
}
