using
System;
using
System.IO;
using
System.Text;
using
System.Collections;
namespace
PDFGenerator
{
public
class
PDFGenerator
{
static
float
pageWidth
=
594.0f
;
static
float
pageDepth
=
828.0f
;
static
float
pageMargin
=
30.0f
;
static
float
fontSize
=
20.0f
;
static
float
leadSize
=
10.0f
;
static
StreamWriterpPDF
=
new
StreamWriter(
"
E:\\myPDF.pdf
"
);
static
MemoryStreammPDF
=
new
MemoryStream();
static
void
ConvertToByteAndAddtoStream(
string
strMsg)
{
Byte[]buffer
=
null
;
buffer
=
ASCIIEncoding.ASCII.GetBytes(strMsg);
mPDF.Write(buffer,
0
,buffer.Length);
buffer
=
null
;
}
static
string
xRefFormatting(
long
xValue)
{
string
strMsg
=
xValue.ToString();
int
iLen
=
strMsg.Length;
if
(iLen
<
10
)
{
StringBuilders
=
new
StringBuilder();
int
i
=
10
-
iLen;
s.Append(
'
0
'
,i);
strMsg
=
s.ToString()
+
strMsg;
}
return
strMsg;
}
static
void
Main(
string
[]args)
{
ArrayListxRefs
=
new
ArrayList();
//
Byte[]buffer=null;
float
yPos
=
0f;
long
streamStart
=
0
;
long
streamEnd
=
0
;
long
streamLen
=
0
;
string
strPDFMessage
=
null
;
//
PDF文檔頭信息
strPDFMessage
=
"
%PDF-1.1\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
xRefs.Add(mPDF.Length);
strPDFMessage
=
"
10obj\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
"
<</Length20R>>\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
"
stream\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
//////
//PDF文檔描述
streamStart
=
mPDF.Length;
//
字體
strPDFMessage
=
"
BT\n/F0
"
+
fontSize
+
"
Tf\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
//
PDF文檔實體高度
yPos
=
pageDepth
-
pageMargin;
strPDFMessage
=
pageMargin
+
"
"
+
yPos
+
"
Td\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
leadSize
+
"
TL\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
//
實體內容
strPDFMessage
=
"
(http://www.wenhui.org)Tj\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
"
ET\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
streamEnd
=
mPDF.Length;
streamLen
=
streamEnd
-
streamStart;
strPDFMessage
=
"
endstream\nendobj\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
//
PDF文檔的版本信息
xRefs.Add(mPDF.Length);
strPDFMessage
=
"
20obj\n
"
+
streamLen
+
"
\nendobj\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
xRefs.Add(mPDF.Length);
strPDFMessage
=
"
30obj\n<</Type/Page/Parent40R/Contents10R>>\nendobj\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
xRefs.Add(mPDF.Length);
strPDFMessage
=
"
40obj\n<</Type/Pages/Count1\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
"
/Kids[\n30R\n]\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
"
/Resources<</ProcSet[/PDF/Text]/Font<</F050R>>>>\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
"
/MediaBox[00
"
+
pageWidth
+
"
"
+
pageDepth
+
"
]\n>>\nendobj\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
xRefs.Add(mPDF.Length);
strPDFMessage
=
"
50obj\n<</Type/Font/Subtype/Type1/BaseFont/Courier/Encoding/WinAnsiEncoding>>\nendobj\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
xRefs.Add(mPDF.Length);
strPDFMessage
=
"
60obj\n<</Type/Catalog/Pages40R>>\nendobj\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
streamStart
=
mPDF.Length;
strPDFMessage
=
"
xref\n07\n000000000065535f\n
"
;
for
(
int
i
=
0
;i
<
xRefs.Count;i
++
)
{
strPDFMessage
+=
xRefFormatting((
long
)xRefs[i])
+
"
00000n\n
"
;
}
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
"
trailer\n<<\n/Size
"
+
(xRefs.Count
+
1
)
+
"
\n/Root60R\n>>\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage
=
"
startxref\n
"
+
streamStart
+
"
\n%%EOF\n
"
;
ConvertToByteAndAddtoStream(strPDFMessage);
mPDF.WriteTo(pPDF.BaseStream);
mPDF.Close();
pPDF.Close();
}
}
}
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