I need help - I can help - Watermark text in PDF using Quick PDF libary

Watermark text in PDF using Quick PDF libary

Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=3767
Printed Date: 25 Apr 24 at 5:46AM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com

Topic: Watermark text in PDF using Quick PDF libary

Posted By: ssivasankaran
Subject: Watermark text in PDF using Quick PDF libary
Date Posted: 09 Dec 19 at 6:52AM

Hi,

I want to create watermark text in pdf using quick pdf library. Could you give me a sample program to insert watermark text in pdf? If the code is in C# then it will be helpful for me.

Regards

Santhanaraman.S

Replies:

Posted By: Ingo
Date Posted: 09 Dec 19 at 8:36AM

Hi,

i think you've didn't read/search in the online reference 'till now? ;-)

Here's a C#-sample from the kb:

https://www.debenu.com/kb/programmatically-add-watermark-stamp-pdf/

Cheers and welcome here,

Ingo

-------------
Cheers,
Ingo

Posted By: ssivasankaran
Date Posted: 09 Dec 19 at 8:58AM

Hi,

Thanks for your response. I have converted the code into c# mentioned in the following link.

http://www.quickpdf.org/forum/watermark_topic230.html" rel="nofollow - http://www.quickpdf.org/forum/watermark_topic230.html

*******************************************************************************

string printFile = fileName;

int transp = 10; //The transparency as a percent value

int drewin = 35; //Angle of rotation... try with values over and below zero... not more than -45 to 45

string ausr;

if (_objPdfLibrary.Unlocked() == 1)

{

try

{

string waterMarkText = "Uncontrolled Copy";

if (waterMarkText.Trim().Length > 40) //The text should have max. 40 characters

waterMarkText = waterMarkText.Substring(1, 40);

_objPdfLibrary.LoadFromFile(fileName, "");

_objPdfLibrary.SetOrigin(1);

_objPdfLibrary.SetMeasurementUnits(0); //means pixel

for(int i = 1 ; i<= _objPdfLibrary.PageCount();i++)

{

int ts, tl, th;

ts = tl = 0;

_objPdfLibrary.SelectPage(i);

int sc1 = i / 2;

int sc2 = i * 2;

if (_objPdfLibrary.PageWidth() < 250)

ts = 8;

if ((_objPdfLibrary.PageWidth() > 249) && (_objPdfLibrary.PageWidth() < 400))

ts = 12;

if ((_objPdfLibrary.PageWidth() > 399) && (_objPdfLibrary.PageWidth() < 650) )

ts = 18;

if ((_objPdfLibrary.PageWidth() > 649) && (_objPdfLibrary.PageWidth() < 1500))

ts = 22;

if ((_objPdfLibrary.PageWidth() > 1499) && (_objPdfLibrary.PageWidth() < 2500))

ts = 30;

if(_objPdfLibrary.PageWidth() > 2499)

ts = 38;

_objPdfLibrary.SetTextSize(ts);

int tw = tl * ts; //Textwidth is the sum from length * size...

tw = tw / 2;

tw = tw + drewin;

th = (tw * drewin) / 45;

_objPdfLibrary.SetTransparency(transp);

if (ausr == 'lo')

_objPdfLibrary.DrawRotatedText(ts, th, drewin, waterMarkText); // left - top - width - height

if (ausr == 'lu')

_objPdfLibrary.DrawRotatedText(ts, _objPdfLibrary.PageHeight() - th, drewin, waterMarkText); // left - top - width - height

if (ausr == 'ro')

_objPdfLibrary.DrawRotatedText(_objPdfLibrary.PageWidth() - tw, ts, drewin, waterMarkText); // left - top - width - height

if (ausr == 'ru')

_objPdfLibrary.DrawRotatedText(_objPdfLibrary.PageWidth() - tw, _objPdfLibrary.PageHeight() - tl, drewin, waterMarkText); // left - top - width - height

_objPdfLibrary.CompressContent();

}

_objPdfLibrary.SaveToFile(fileName);

}

catch (Exception ex)

{

}

**************************************************************************

But unable to convert the following code. I can't understand.

if cbausr.Text = 'Links oben'    then ausr := 'lo'; //top left
   if cbausr.Text = 'Links unten'   then ausr := 'lu'; //bottom left
   if cbausr.Text = 'Rechts oben'   then ausr := 'ro'; //top right
   if cbausr.Text = 'Rechts unten' then ausr := 'ru'; //bottom right

Could you explain the above?

Thanks and Regards

Santhanaraman.S

Posted By: Ingo
Date Posted: 09 Dec 19 at 6:51PM

cbausr.Text means the selected content of a combobox.
If you choose "Links unten" variable ausr will set to "lu".
"lu" means left, bottom and has to do with a simple alignment of the watermark.

-------------
Cheers,
Ingo

Posted By: ssivasankaran
Date Posted: 10 Dec 19 at 4:35AM

Thank you so much. It's working for me.

Thanks and Regards

Santhanaraman.S

Posted By: Ingo
Date Posted: 10 Dec 19 at 10:52PM

a NormalizePage before the stamp is always a good option...

-------------
Cheers,
Ingo