Хотите создать PDF-файл с формой, имеющей прямоугольники в качестве заголовка, абзаца в нижнем колонтитуле и разделов в теле - PullRequest
6 голосов
/ 26 мая 2020

I want to create a pdf somewhat like this

Код, который я написал до сих пор, ниже:

public class HeaderFooterEvent extends PdfPageEventHelper {
    @Override
    public void onStartPage(PdfWriter writer, Document document) {
    }

    @Override
    public void onEndPage(PdfWriter writer, Document document) {
        addHeader(writer, document);
        addHeader2(writer, document);
        addFooter(writer, document);
    }

    void addHeader(PdfWriter writer, Document document){
        try {
            PdfContentByte cb = writer.getDirectContent();

            // the initial rectangle defines the max size of the content
            rect = new Rectangle(10, document.getPageSize().getBottom() + 50,
                    document.getPageSize().getWidth() - 2 * 10, document.getPageSize().getTop() - 50);

     // flip the rectangle if top and bottom were switched
            rect.normalize();

            ColumnText ct = new ColumnText(cb);
            ct.setSimpleColumn(rect);
            ct.addElement(createTable1(auditBundle, context));

     // do a simulation run
               int result = ct.go(true);

      // assume the content fits in the initial rectangle
                if (result == ColumnText.NO_MORE_TEXT) {

                // the bottom of the simulated content
                float verticalpos = ct.getYLine();

                // redefine the rectangle based on the simulation
                rect = new Rectangle(10, verticalpos, document.getPageSize().getWidth() - 2 * 10,
                        document.getPageSize().getTop() - 50);
                ct.setSimpleColumn(rect);

                // the original content was consumed in the simulation, so add it again
                ct.addElement(createTable1(auditBundle, context));

                // render again
                ct.go(false);

                // draw the rectangle
                rect.setBorder(Rectangle.BOX);
                rect.setBorderWidth(1);
                rect.setBorderColor(BaseColor.BLACK);
                cb.rectangle(rect);

            }
        } catch (DocumentException e){
            e.printStackTrace();
        }
    }

    void addHeader2(PdfWriter writer, Document document){
        try {
            float fntSize, lineSpacing;
            fntSize = 20f;
            lineSpacing = 15f;
            String title = "", recordedBy = "", entity = "", orgUnit = "", actualStartDate = "", 
actualStartTime = "";

            Paragraph paragraph = new Paragraph();
            paragraph.add(new Phrase(lineSpacing, title + " " + recordedBy + " " + entity + " " +
                    orgUnit + " " + actualStartDate + " " + actualStartTime,
                    FontFactory.getFont(FontFactory.HELVETICA, fntSize)));
            paragraph.setAlignment(Element.ALIGN_CENTER);
            paragraph.setPaddingTop(5);

            PdfContentByte cb = writer.getDirectContent();

      // the initial rectangle defines the max size of the content
            Rectangle rect2 = new Rectangle(10, document.getPageSize().getBottom() + 50,
                    document.getPageSize().getWidth() - 2 * 10, document.getPageSize().getTop() - 
 250);

// flip the rectangle if top and bottom were switched
            rect2.normalize();

            ColumnText ct = new ColumnText(cb);
            ct.setSimpleColumn(rect2);
            ct.addElement(paragraph);

     // do a simulation run

    int result = ct.go(true);

    // assume the content fits in the initial rectangle

       if (result == ColumnText.NO_MORE_TEXT) {

                // the bottom of the simulated content
                float verticalpos = ct.getYLine()+rect.getHeight();

                // redefine the rectangle based on the simulation
                rect2 = new Rectangle(10, verticalpos, document.getPageSize().getWidth() - 2 * 10,
                        document.getPageSize().getTop() - 250);
                ct.setSimpleColumn(rect2);

                // the original content was consumed in the simulation, so add it again
                ct.addElement(paragraph);

                // render again
                ct.go(false);

                // draw the rectangle
                rect2.setBorder(Rectangle.BOX);
                rect2.setBorderWidth(1);
                rect2.setBorderColor(BaseColor.BLACK);
                cb.rectangle(rect2);
            }
        } catch (DocumentException e){
            e.printStackTrace();
        }

    }

    void addFooter(PdfWriter writer, Document document){
        String text = "Report printed by %1$s at %2$s on %3$s CMO COMPLIANCE Management Software by www.cmo-compliance.com";
        Date currentTime = Calendar.getInstance().getTime();
        String currentDate = DateTimeFormatter.getUserTZDateFormat(
                DateTimeFormatter.CUSTOM_DATE_TEMPLATE_DD_MMM_YYYY
        ).format(currentTime);

        String currentTimes = DateTimeFormatter.getUserTZDateFormat(
                DateTimeFormatter.CUSTOM_24H_TIME_TEMPLATE_H_MM
        ).format(currentTime);

        PdfContentByte cb = writer.getDirectContent();

        Rectangle pageSize = document.getPageSize();
        float left = document.leftMargin();
        float right = document.rightMargin();
        float bottom = document.bottomMargin();

        Rectangle rect = new Rectangle(
                pageSize.getLeft() + left, pageSize.getBottom(),
                pageSize.getRight() - right, pageSize.getBottom() + bottom);
        cb.rectangle(rect);
        ColumnText ct = new ColumnText(writer.getDirectContent());
        ct.setSimpleColumn(rect);
        ct.addElement(new Paragraph(String.format(text, CmoApplication.getInstance().getUser().loginName, currentDate, currentTimes)));
        try {
            ct.go();
        } catch (DocumentException e) {
            e.printStackTrace();
        }
    }
}

Затем для абзаца я добавил данные, как показано ниже: Документ документа = new Document ();

        // Location to save
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(dest));

        // Open to write
        document.open();

        // Document Settings
        document.setPageSize(PageSize.A4);
        document.addCreationDate();
        document.addAuthor(CmoApplication.getInstance().getCompany().companyName);
        document.addCreator(CmoApplication.getInstance().getUser().loginName);

        HeaderFooterEvent event = new HeaderFooterEvent();
        writer.setPageEvent(event);

        Font chapterFont = FontFactory.getFont(FontFactory.HELVETICA, 16, Font.BOLDITALIC);
        Font paragraphFont = FontFactory.getFont(FontFactory.HELVETICA, 12, Font.NORMAL);
        Chunk chunk = new Chunk("This is the title", chapterFont);
        Chapter chapter = new Chapter(new Paragraph(chunk), 1);
        chapter.setNumberDepth(0);
        chapter.add(new Paragraph("This is the paragraph", paragraphFont));
        document.add(chapter);

        document.close();

Я не могу понять, как добавить разделы, как показано на изображении. Также я хочу, чтобы данные автоматически корректировались на нескольких страницах в соответствии с текстом. Буду признателен, если кто-нибудь сможет на это ответить. Спасибо.

1 Ответ

0 голосов
/ 11 июня 2020
• 1000 в более новых версиях Android, поэтому, если это возможное решение, это будет довольно просто. Я предполагаю, что есть также библиотеки, которые могут выполнять sh для создания красивых PDF-файлов путем преобразования html страниц. Я мог бы поискать некоторые мои старые источники, если вы заинтересованы в таком решении :)

Я разместил полный рабочий пример на github со следующей фиксацией: https://github.com/Hatzen/BusinessPdfs/tree/a508909044131f2c94ece6c00d8fd0a785546ae7

Часть kotlin приложения для создания pdf:

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        setSupportActionBar(toolbar)

        fab.setOnClickListener { view ->
            if (isStoragePermissionGranted()) {
                createPdfFromTemplate()
            } else {
                ActivityCompat.requestPermissions(this, arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE), requestCodeStoragePermission)
            }
        }
    }

    private fun createPdfFromTemplate() {
        var htmlContent = assets.open("html/index.html").bufferedReader().use { it.readText() }

        val sections = mutableListOf("A", "B", "C", "D", "E")
        val questions = mutableListOf("1", "2", "3")
        val answers = mutableListOf("I", "II", "III", "IV")
        val replacementSection = replaceSection(sections, questions, answers)
        val replacementKeySection = "{\$SECTION}"
        htmlContent = htmlContent.replace(replacementKeySection, replacementSection)

        val target = File(Environment.getExternalStorageDirectory().toString(), "file.pdf")
        // val target = File.createTempFile("BusinessPdfPrefix-", ".pdf")
        Log.e(javaClass.simpleName, "Pdf saved as: " + target.absolutePath)

        val converter = Html2Pdf.Companion.Builder()
                .context(this)
                .html(htmlContent)
                .file(target)
                .build()

        converter.convertToPdf(object: Html2Pdf.OnCompleteConversion {
            override fun onFailed() {
                Toast.makeText(this@MainActivity, "Failed creating pdf!", Toast.LENGTH_LONG).show()
            }

            override fun onSuccess() {
                openPdf(target)
            }

        })
    }

    private fun replaceSection(sections: List<String>, questions: List<String>, answers: List<String>): String {
        val replaceableKey = "{SECTION}"
        val replaceableKeyQuestions = "{\$QUESTION}"
        var result = ""
        var isFirstSection = true
        for (section in sections) {
            val inflate = getHtmlPartFromAssets("section")
            result += inflate
            if (isFirstSection) {
                result = result.replace("{ADDITIONAL_CLASS}", "firstSection")
                isFirstSection = false
            }
            result = result.replace(replaceableKey, "Section " + section)
            result = result.replace(replaceableKeyQuestions, replaceQuestion(questions, answers))
        }
        return result
    }

    private fun replaceQuestion(questions: List<String>, answers: List<String>): String {
        val replaceableKey = "{QUESTION}"
        val replaceableKeyNumberOfQuestions = "{#ANSWER}"
        val replaceableKeyAnswers = "{\$ANSWER}"
        var result = ""
        for (question in questions) {
            val inflate = getHtmlPartFromAssets("question")
            result += inflate
            result = result.replace(replaceableKey, "Question " + question)
            result = result.replace(replaceableKeyNumberOfQuestions, answers.size.toString())
            result = result.replace(replaceableKeyAnswers, replaceAnswer(answers))
        }
        return result
    }

    private fun replaceAnswer(answers: List<String>): String {
        val replaceableKey = "{ANSWER}"
        var result = ""
        for (answer in answers) {
            val inflate = getHtmlPartFromAssets("answer")
            result += inflate
            val constant = "Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet."
            val constant2 = "<input type='checkbox'> Answer"
            result = result.replace(replaceableKey, constant2 + constant + answer)
        }
        return result
    }

    private fun getHtmlPartFromAssets(filename: String): String {
        return assets.open("html/parts/" + filename + ".html").bufferedReader().use { it.readText() }
    }

основной html шаблон:

<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<style>
  * {
    font-family: "arial";
  }
  body{
    height:297mm;
    width:210mm;
  }
  li, td {
    padding: 2mm;
  }
  .header {
    width: 100%;
    border: 1mm solid black;
    min-height: 2cm;
    margin-bottom: 5mm;
  }
  .header p {
    text-align: center;
  }
  #logo {
    height: 100px;
    background-image: url(file:///android_asset/html/logo.png);
    background-size: contain;
    background-position: top right;
    background-repeat: no-repeat !important;
  }
  #content {
  }
  table {
    page-break-inside:avoid;
    width: 100%;
    border: none;
  }
  .firstSection {
    page-break-inside:auto !important;
  }
  tr {
    page-break-inside:avoid;
    page-break-after:auto;
  }
  /*https://medium.com/@Idan_Co/the-ultimate-print-html-template-with-header-footer-568f415f6d2a*/
  .footer, .footer-space {
    height: 100px;
  }
  .footer {
    border-top: 1px solid #000;
    padding: 2mm;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
  }
  @page {
    /*Define page borders here
    */
    margin: 2cm;
  }
</style>
</head>
<body>
<table>
    <tbody><tr><td>
        <div id="logo" class="header">
            <p>Text in the middle</p>
        </div>
        <div class="header">
            <p>Paragraph with from<br>details</p>
        </div>
        <div class="clear"></div>
        <div id="content">
            {$SECTION}
        </div>
    </td></tr></tbody>
    <tfoot><tr><td>
        <div class="footer-space">&nbsp;</div>
    </td></tr></tfoot>
</table>
<div class="footer">My Footer</div>
</body>
<script>
window.onload = function () {
    // Additional calculations and DOM manipulation could be done here via javascript.
    // document.body.style.backgroundColor = "red";
}
</script>
</html>

Результат: enter image description here

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