Some test text!

< Android samples

StamperTest - Kotlin

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 legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

package com.pdftron.android.pdfnetsdksamples.samples

import com.pdftron.android.pdfnetsdksamples.OutputListener
import com.pdftron.android.pdfnetsdksamples.PDFNetSample
import com.pdftron.android.pdfnetsdksamples.R
import com.pdftron.android.pdfnetsdksamples.util.Utils
import com.pdftron.pdf.ColorPt
import com.pdftron.pdf.Font
import com.pdftron.pdf.Image
import com.pdftron.pdf.PDFDoc
import com.pdftron.pdf.Page
import com.pdftron.pdf.PageSet
import com.pdftron.pdf.Rect
import com.pdftron.pdf.Stamper
import com.pdftron.sdf.SDFDoc

import java.io.File
import java.util.ArrayList

/**
 * The following sample shows how to add new content (or watermark) PDF pages
 * using 'com.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.
 */
class StamperTest : PDFNetSample() {
    init {
        setTitle(R.string.sample_stamper_title)
        setDescription(R.string.sample_stamper_description)
    }

    override fun run(outputListener: OutputListener?) {
        super.run(outputListener)
        mOutputListener = outputListener
        mFileList.clear()
        printHeader(outputListener!!)
        val input_filename = "newsletter.pdf"

        //--------------------------------------------------------------------------------
        // Example 1) Add text stamp to all pages, then remove text stamp from odd pages.
        try {
            val doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + input_filename)!!.absolutePath)
            doc.initSecurityHandler()
            val s = Stamper(Stamper.e_relative_scale, 0.5, 0.5)
            s.setAlignment(Stamper.e_horizontal_center, Stamper.e_vertical_center)
            val red = ColorPt(1.0, 0.0, 0.0) // set text color to red
            s.setFontColor(red)
            val msg = "If you are reading this\nthis is an even page"
            val ps = PageSet(1, doc.pageCount)
            s.stampText(doc, msg, ps)
            //delete all text stamps in even pages
            val ps1 = PageSet(1, doc.pageCount, PageSet.e_odd)
            Stamper.deleteStamps(doc, ps1)

            doc.save(Utils.createExternalFile("$input_filename.ex1.pdf").absolutePath, SDFDoc.SaveMode.LINEARIZED, null)
            mFileList.add(File(doc.fileName).name)
            doc.close()
        } catch (e: Exception) {
            e.printStackTrace()
            return
        }

        //--------------------------------------------------------------------------------
        // Example 2) Add Image stamp to first 2 pages.
        try {
            val doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + input_filename)!!.absolutePath)
            doc.initSecurityHandler()

            val s = Stamper(Stamper.e_relative_scale, .05, .05)
            val img = Image.create(doc, Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + "peppers.jpg")!!.absolutePath)
            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)
            val pt = ColorPt(0.0, 0.0, 0.0, 0.0)
            s.setFontColor(pt)
            s.setRotation(180.0)
            s.setAsBackground(false)
            //only stamp first 2 pages
            val ps = PageSet(1, 2)
            s.stampImage(doc, img, ps)

            doc.save(Utils.createExternalFile("$input_filename.ex2.pdf").absolutePath, SDFDoc.SaveMode.LINEARIZED, null)
            mFileList.add(File(doc.fileName).name)
            doc.close()
        } catch (e: Exception) {
            e.printStackTrace()
            return
        }

        //--------------------------------------------------------------------------------
        // Example 3) Add Page stamp to all pages.
        try {
            val doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + input_filename)!!.absolutePath)
            doc.initSecurityHandler()

            val fish_doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + "fish.pdf")!!.absolutePath)
            fish_doc.initSecurityHandler()

            val s = Stamper(Stamper.e_relative_scale, 0.5, 0.5)
            val src_page = fish_doc.getPage(1)
            val page_one_crop = src_page.cropBox
            // 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, -1.0)
            s.setOpacity(0.4)
            s.setRotation(-67.0)
            //put the image at the bottom right hand corner
            s.setAlignment(Stamper.e_horizontal_right, Stamper.e_vertical_bottom)
            val ps = PageSet(1, doc.pageCount)
            s.stampPage(doc, src_page, ps)

            doc.save(Utils.createExternalFile("$input_filename.ex3.pdf").absolutePath, SDFDoc.SaveMode.LINEARIZED, null)
            mFileList.add(File(doc.fileName).name)
            fish_doc.close()
            doc.close()
        } catch (e: Exception) {
            e.printStackTrace()
            return
        }

        //--------------------------------------------------------------------------------
        // Example 4) Add Image stamp to first 20 odd pages.
        try {
            val doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + input_filename)!!.absolutePath)
            doc.initSecurityHandler()

            val s = Stamper(Stamper.e_absolute_size, 20.0, 20.0)
            s.setOpacity(1.0)
            s.setRotation(45.0)
            s.setAsBackground(true)
            s.setPosition(30.0, 40.0)
            val img = Image.create(doc, Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + "peppers.jpg")!!.absolutePath)
            val ps = PageSet(1, 20, PageSet.e_odd)
            s.stampImage(doc, img, ps)

            doc.save(Utils.createExternalFile("$input_filename.ex4.pdf").absolutePath, SDFDoc.SaveMode.LINEARIZED, null)
            mFileList.add(File(doc.fileName).name)
            doc.close()
        } catch (e: Exception) {
            e.printStackTrace()
            return
        }

        //--------------------------------------------------------------------------------
        // Example 5) Add text stamp to first 20 even pages
        try {
            val doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + input_filename)!!.absolutePath)
            doc.initSecurityHandler()

            val s = Stamper(Stamper.e_relative_scale, .05, .05)
            s.setPosition(0.0, 0.0)
            s.setOpacity(0.7)
            s.setRotation(90.0)
            s.setSize(Stamper.e_font_size, 80.0, -1.0)
            s.setTextAlignment(Stamper.e_align_center)
            val ps = PageSet(1, 20, PageSet.e_even)
            s.stampText(doc, "Goodbye\nMoon", ps)

            doc.save(Utils.createExternalFile("$input_filename.ex5.pdf").absolutePath, SDFDoc.SaveMode.LINEARIZED, null)
            mFileList.add(File(doc.fileName).name)
            doc.close()
        } catch (e: Exception) {
            e.printStackTrace()
            return
        }

        //--------------------------------------------------------------------------------
        // Example 6) Add first page as stamp to all even pages
        try {
            val doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + input_filename)!!.absolutePath)
            doc.initSecurityHandler()

            val fish_doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + "fish.pdf")!!.absolutePath)
            fish_doc.initSecurityHandler()

            val s = Stamper(Stamper.e_relative_scale, 0.3, 0.3)
            s.setOpacity(1.0)
            s.setRotation(270.0)
            s.setAsBackground(true)
            s.setPosition(0.5, 0.5, true)
            s.setAlignment(Stamper.e_horizontal_left, Stamper.e_vertical_bottom)
            val page_one = fish_doc.getPage(1)
            val ps = PageSet(1, doc.pageCount, PageSet.e_even)
            s.stampPage(doc, page_one, ps)

            doc.save(Utils.createExternalFile("$input_filename.ex6.pdf").absolutePath, SDFDoc.SaveMode.LINEARIZED, null)
            mFileList.add(File(doc.fileName).name)
            fish_doc.close()
            doc.close()
        } catch (e: Exception) {
            e.printStackTrace()
            return
        }

        //--------------------------------------------------------------------------------
        // Example 7) Add image stamp at top right corner in every pages
        try {
            val doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + input_filename)!!.absolutePath)
            doc.initSecurityHandler()

            val s = Stamper(Stamper.e_relative_scale, .1, .1)
            s.setOpacity(0.8)
            s.setRotation(135.0)
            s.setAsBackground(false)
            s.showsOnPrint(false)
            s.setAlignment(Stamper.e_horizontal_left, Stamper.e_vertical_top)
            s.setPosition(10.0, 10.0)

            val img = Image.create(doc, Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + "peppers.jpg")!!.absolutePath)
            val ps = PageSet(1, doc.pageCount, PageSet.e_all)
            s.stampImage(doc, img, ps)

            doc.save(Utils.createExternalFile("$input_filename.ex7.pdf").absolutePath, SDFDoc.SaveMode.LINEARIZED, null)
            mFileList.add(File(doc.fileName).name)
            doc.close()
        } catch (e: Exception) {
            e.printStackTrace()
            return
        }

        //--------------------------------------------------------------------------------
        // 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.
        try {
            val doc = PDFDoc(Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + input_filename)!!.absolutePath)
            doc.initSecurityHandler()

            val 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, Font.e_courier, true))
            val red = ColorPt(1.0, 0.0, 0.0, 0.0)
            s.setFontColor(red) //set color to red
            s.setTextAlignment(Stamper.e_align_right)
            s.setAsBackground(true) //set text stamp as background
            val ps = PageSet(1, 2)
            s.stampText(doc, "This is a title!", ps)

            val img = Image.create(doc, Utils.getAssetTempFile(PDFNetSample.Companion.INPUT_PATH + "peppers.jpg")!!.absolutePath)
            s.setAsBackground(false) // set image stamp as foreground
            val first_page_ps = PageSet(1)
            s.stampImage(doc, img, first_page_ps)

            doc.save(Utils.createExternalFile("$input_filename.ex8.pdf").absolutePath, SDFDoc.SaveMode.LINEARIZED, null)
            mFileList.add(File(doc.fileName).name)
            doc.close()
        } catch (e: Exception) {
            e.printStackTrace()
            return
        }

        for (file in mFileList) {
            addToFileList(file)
        }
        printFooter(outputListener)
    }

    companion object {

        private var mOutputListener: OutputListener? = null

        private val mFileList = ArrayList<String>()
    }
    //---------------------------------------------------------------------------------------
    // 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.
    //---------------------------------------------------------------------------------------

}