< Linux samples

StamperTest - Python

The sample shows how to use 'pdftron.PDF.Stamper' utility class to stamp PDF pages with text, images, or with other PDF pages. ElementBuilder and ElementWriter should be used for more complex PDF stamping operations.

#---------------------------------------------------------------------------------------
# Copyright (c) 2001-2018 by PDFTron Systems Inc. All Rights Reserved.
# Consult LICENSE.txt regarding license information.
#---------------------------------------------------------------------------------------

import site
site.addsitedir("../../../PDFNetC/Lib")
import sys
from PDFNetPython import *

#---------------------------------------------------------------------------------------
# The following sample shows how to add new content (or watermark) PDF pages
# using 'pdftron.PDF.Stamper' utility class. 
#
# Stamper can be used to PDF pages with text, images, or with other PDF content 
# in only a few lines of code. Although Stamper is very simple to use compared 
# to ElementBuilder/ElementWriter it is not as powerful or flexible. In case you 
# need full control over PDF creation use ElementBuilder/ElementWriter to add 
# new content to existing PDF pages as shown in the ElementBuilder sample project.
#---------------------------------------------------------------------------------------

# Relative path to the folder containing the test files.
input_path = "../../TestFiles/"
output_path = "../../TestFiles/Output/"
input_filename = "newsletter.pdf"

def main():
    # Initialize PDFNet
    PDFNet.Initialize()
    
    #--------------------------------------------------------------------------------
    # Example 1) Add text stamp to all pages, then remove text stamp from odd pages. 
    print("Example 1...")
    doc = PDFDoc(input_path + input_filename)
    doc.InitSecurityHandler()
    s = Stamper(Stamper.e_relative_scale, 0.5, 0.5)
    
    s.SetAlignment(Stamper.e_horizontal_center, Stamper.e_vertical_center)
    red = ColorPt(1, 0, 0) # set text color to red
    s.SetFontColor(red)
    s.StampText(doc, "If you are reading this\nthis is an even page", PageSet(1, doc.GetPageCount()))
    # delete all text stamps in odd pages
    Stamper.DeleteStamps(doc, PageSet(1, doc.GetPageCount(), PageSet.e_odd))
    
    doc.Save(output_path + input_filename + ".ex1.pdf", SDFDoc.e_linearized)
    doc.Close()
    print("Done.")

    #--------------------------------------------------------------------------------
    # Example 2) Add Image stamp to first 2 pages. 
    
    print("Example 2...")
    doc = PDFDoc(input_path + input_filename)
    doc.InitSecurityHandler()
    s = Stamper(Stamper.e_relative_scale, 0.05, 0.05)
    img = Image.Create(doc.GetSDFDoc(), input_path + "peppers.jpg")
    s.SetSize(Stamper.e_relative_scale, 0.5, 0.5)
    
    # set position of the image to the center, left of PDF pages
    s.SetAlignment(Stamper.e_horizontal_left, Stamper.e_vertical_center)
    pt = ColorPt(0, 0, 0, 0)
    s.SetFontColor(pt)
    s.SetRotation(180)
    s.SetAsBackground(False)
    # only stamp first 2 pages
    ps = PageSet(1, 2)
    s.StampImage(doc, img, ps)
    
    doc.Save(output_path + input_filename + ".ex2.pdf", SDFDoc.e_linearized)
    doc.Close()
    print("Done.")
    
    #--------------------------------------------------------------------------------
    # Example 3) Add Page stamp to all pages. 
    
    print("Example 3...")
    doc = PDFDoc(input_path + input_filename)
    doc.InitSecurityHandler()
    
    fish_doc = PDFDoc(input_path + "fish.pdf")
    fish_doc.InitSecurityHandler()
    s = Stamper(Stamper.e_relative_scale, 0.5, 0.5)
    src_page = fish_doc.GetPage(1)
    page_one_crop = src_page.GetCropBox()
    # set size of the image to 10% of the original while keep the old aspect ratio
    s.SetSize(Stamper.e_absolute_size, page_one_crop.Width() * 0.1, -1)
    s.SetOpacity(0.4)
    s.SetRotation(-67)
    # put the image at the bottom right hand corner
    s.SetAlignment(Stamper.e_horizontal_right, Stamper.e_vertical_bottom)
    ps = PageSet(1, doc.GetPageCount())
    s.StampPage(doc, src_page, ps)
    doc.Save(output_path + input_filename + ".ex3.pdf", SDFDoc.e_linearized)
    doc.Close()
    print("Done.")
    
    #--------------------------------------------------------------------------------
    # Example 4) Add Image stamp to first 20 odd pages.
    
    print("Example 4...")
    doc = PDFDoc(input_path + input_filename)
    doc.InitSecurityHandler()
    
    s = Stamper(Stamper.e_absolute_size, 20, 20)
    s.SetOpacity(1)
    s.SetRotation(45)
    s.SetAsBackground(True)
    s.SetPosition(30, 40)
    img = Image.Create(doc.GetSDFDoc(), input_path + "peppers.jpg")
    ps = PageSet(1, 20, PageSet.e_odd)
    s.StampImage(doc, img, ps)
    
    doc.Save(output_path + input_filename + ".ex4.pdf", SDFDoc.e_linearized)
    doc.Close()
    print("Done.")
    
    #--------------------------------------------------------------------------------
    # Example 5) Add text stamp to first 20 even pages
    
    print("Example 5...")
    doc = PDFDoc(input_path + input_filename)
    doc.InitSecurityHandler()
    s = Stamper(Stamper.e_relative_scale, 0.05, 0.05)
    s.SetPosition(0, 0)
    s.SetOpacity(0.7)
    s.SetRotation(90)
    s.SetSize(Stamper.e_font_size, 80, -1)
    s.SetTextAlignment(Stamper.e_align_center)
    ps = PageSet(1, 20, PageSet.e_even)
    s.StampText(doc, "Goodbye\nMoon", ps)
    
    doc.Save(output_path + input_filename + ".ex5.pdf", SDFDoc.e_linearized)
    doc.Close()
    print("Done.")
    
    #--------------------------------------------------------------------------------
    # Example 6) Add first page as stamp to all even pages
    
    print("Example 6...")
    doc = PDFDoc(input_path + input_filename)
    doc.InitSecurityHandler()
    
    fish_doc = PDFDoc(input_path + "fish.pdf");
    fish_doc.InitSecurityHandler()
    
    s = Stamper(Stamper.e_relative_scale, 0.3, 0.3)
    s.SetOpacity(1)
    s.SetRotation(270)
    s.SetAsBackground(True)
    s.SetPosition(0.5, 0.5, True)
    s.SetAlignment(Stamper.e_horizontal_left, Stamper.e_vertical_bottom)
    page_one = fish_doc.GetPage(1)
    ps = PageSet(1, doc.GetPageCount(), PageSet.e_even)
    s.StampPage(doc, page_one, ps)
    
    doc.Save(output_path + input_filename + ".ex6.pdf", SDFDoc.e_linearized)
    doc.Close()
    print("Done.")
    
    #--------------------------------------------------------------------------------
    # Example 7) Add image stamp at top left corner in every pages
    
    print("Example 7...")
    doc = PDFDoc(input_path + input_filename)
    doc.InitSecurityHandler()
    
    s = Stamper(Stamper.e_relative_scale, 0.1, 0.1)
    s.SetOpacity(0.8)
    s.SetRotation(135)
    s.SetAsBackground(False)
    s.ShowsOnPrint(False)
    s.SetAlignment(Stamper.e_horizontal_left, Stamper.e_vertical_top)
    s.SetPosition(10, 10)
    img = Image.Create(doc.GetSDFDoc(), input_path + "peppers.jpg")
    ps = PageSet(1, doc.GetPageCount(), PageSet.e_all)
    s.StampImage(doc, img, ps)
    doc.Save(output_path + input_filename + ".ex7.pdf", SDFDoc.e_linearized)
    doc.Close()
    print("Done.")
    
    #--------------------------------------------------------------------------------
    # Example 8) Add Text stamp to first 2 pages, and image stamp to first page.
    #          Because text stamp is set as background, the image is top of the text
    #          stamp. Text stamp on the first page is not visible.
    
    print("Example 8...")
    doc = PDFDoc(input_path + input_filename)
    doc.InitSecurityHandler()
    
    s = Stamper(Stamper.e_relative_scale, 0.07, -0.1)
    s.SetAlignment(Stamper.e_horizontal_right, Stamper.e_vertical_bottom)
    s.SetAlignment(Stamper.e_horizontal_center, Stamper.e_vertical_top)
    s.SetFont(Font.Create(doc.GetSDFDoc(), Font.e_courier, True))
    red = ColorPt(1, 0, 0) 
    s.SetFontColor(red) # set text color to red
    s.SetTextAlignment(Stamper.e_align_right)
    s.SetAsBackground(True) # set text stamp as background
    ps = PageSet(1, 2)
    s.StampText(doc, "This is a title!", ps)
    
    img = Image.Create(doc.GetSDFDoc(), input_path + "peppers.jpg")
    s.SetAsBackground(False)    # set image stamp as foreground
    first_page_ps = PageSet(1)
    s.StampImage(doc, img, first_page_ps)

    doc.Save(output_path + input_filename + ".ex8.pdf", SDFDoc.e_linearized)
    doc.Close()
    print("Done.")

if __name__ == '__main__':
    main()