List of usage examples for com.lowagie.text.pdf PdfPageEventHelper PdfPageEventHelper
PdfPageEventHelper
From source file:ca.sqlpower.architect.profile.output.ProfilePDFFormat.java
License:Open Source License
/** * Outputs a PDF file report of the data in drs to the given * output stream./*w w w . j ava 2 s. c o m*/ * @throws SQLObjectException * @throws IllegalAccessException * @throws InstantiationException */ public void format(OutputStream out, List<ProfileResult> profileResults) throws DocumentException, IOException, SQLException, SQLObjectException, InstantiationException, IllegalAccessException, ClassNotFoundException { final int minRowsTogether = 1; // counts smaller than this are considered orphan/widow final int mtop = 50; // margin at top of page (in points) final int mbot = 50; // margin at bottom of page (page numbers are below this) // final int pbot = 20; // padding between bottom margin and bottom of body text final int mlft = 50; // margin at left side of page final int mrgt = 50; // margin at right side of page final Rectangle pagesize = PageSize.LETTER.rotate(); final Document document = new Document(pagesize, mlft, mrgt, mtop, mbot); final PdfWriter writer = PdfWriter.getInstance(document, out); final float fsize = 6f; // the font size to use in the table body final BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED); document.addTitle("Table Profiling Report"); document.addSubject("Tables: " + profileResults); document.addAuthor(System.getProperty("user.name")); document.addCreator("Power*Architect version " + ArchitectVersion.APP_FULL_VERSION); document.open(); // vertical position where next element should start // (bottom is 0; top is pagesize.height()) float pos = pagesize.height() - mtop; final PdfContentByte cb = writer.getDirectContent(); final PdfTemplate nptemplate = cb.createTemplate(50, 50); writer.setPageEvent(new PdfPageEventHelper() { // prints the "page N of <template>" footer public void onEndPage(PdfWriter writer, Document document) { int pageN = writer.getPageNumber(); String text = "Page " + pageN + " of "; float len = bf.getWidthPoint(text, fsize - 2); cb.beginText(); cb.setFontAndSize(bf, fsize - 2); cb.setTextMatrix(pagesize.width() / 2 - len / 2, mbot / 2); cb.showText(text); cb.endText(); cb.addTemplate(nptemplate, pagesize.width() / 2 - len / 2 + len, mbot / 2); } public void onCloseDocument(PdfWriter writer, Document document) { nptemplate.beginText(); nptemplate.setFontAndSize(bf, fsize - 2); nptemplate.showText(String.valueOf(writer.getPageNumber() - 1)); nptemplate.endText(); } }); document.add(new Paragraph("SQL Power Architect Profiling Report")); document.add(new Paragraph("Generated " + new java.util.Date() + " by " + System.getProperty("user.name"))); float[] widths = new float[totalColumn]; // widths of widest cells per row in pdf table LinkedList<ProfileTableStructure> profiles = new LinkedList<ProfileTableStructure>(); // 1 table per profile result Font f = new Font(bf, fsize); // This ddl generator is set to the appropriate ddl generator for the source database // every time we encounter a table profile result in the list. DDLGenerator ddlg = null; PdfPTable pdfTable = null; for (ProfileResult result : profileResults) { if (result instanceof TableProfileResult) { TableProfileResult tableResult = (TableProfileResult) result; pdfTable = new PdfPTable(widths.length); pdfTable.setWidthPercentage(100f); ProfileTableStructure oneProfile = makeNextTable(tableResult, pdfTable, bf, fsize, widths); profiles.add(oneProfile); ddlg = tableResult.getDDLGenerator(); } else if (result instanceof ColumnProfileResult) { final ColumnProfileResult columnResult = (ColumnProfileResult) result; TableProfileResult tResult = columnResult.getParent(); addBodyRow(tResult, columnResult, ddlg, pdfTable, bf, f, fsize, widths); } } double allowedTableSize = pagesize.width() - mrgt - mlft; double totalWidths = 0; for (int i = 0; i < headings.length; i++) { if (!columnsToTruncate.contains(headings[i])) { widths[i] += PIXELS_PER_BORDER; totalWidths += widths[i]; } } truncateLength = (allowedTableSize - totalWidths - (PIXELS_PER_BORDER * (columnsToTruncate.size()))) / columnsToTruncate.size(); logger.debug("Truncate length is " + truncateLength); widths = new float[totalColumn]; profiles = new LinkedList<ProfileTableStructure>(); // 1 table per profile result for (ProfileResult result : profileResults) { if (result instanceof TableProfileResult) { TableProfileResult tableResult = (TableProfileResult) result; pdfTable = new PdfPTable(widths.length); pdfTable.setWidthPercentage(100f); ProfileTableStructure oneProfile = makeNextTable(tableResult, pdfTable, bf, fsize, widths); profiles.add(oneProfile); ddlg = tableResult.getDDLGenerator(); } else if (result instanceof ColumnProfileResult) { final ColumnProfileResult columnResult = (ColumnProfileResult) result; TableProfileResult tResult = columnResult.getParent(); addBodyRow(tResult, columnResult, ddlg, pdfTable, bf, f, fsize, widths); } } for (int i = 0; i < headings.length; i++) { widths[i] += PIXELS_PER_BORDER; } // add the PdfPTables to the document; try to avoid orphan and widow rows pos = writer.getVerticalPosition(true) - fsize; logger.debug("Starting at pos=" + pos); boolean newPageInd = true; for (ProfileTableStructure profile : profiles) { pdfTable = profile.getMainTable(); pdfTable.setTotalWidth(pagesize.width() - mrgt - mlft); pdfTable.setWidths(widths); resetHeaderWidths(profile, widths); int startrow = pdfTable.getHeaderRows(); int endrow = startrow; // current page will contain header+startrow..endrow /* no other rows in the table, just the header, and the header may * contain error message */ if (endrow == pdfTable.size()) { pos = pdfTable.writeSelectedRows(0, pdfTable.getHeaderRows(), mlft, pos, cb); continue; } while (endrow < pdfTable.size()) { // figure out how many body rows fit nicely on the page float endpos = pos - calcHeaderHeight(pdfTable); // y position of page number# = (mbot/2+fsize) while ((endpos - pdfTable.getRowHeight(endrow)) >= (mbot / 2 + fsize + 2) && endrow < pdfTable.size()) { endpos -= pdfTable.getRowHeight(endrow); endrow++; } // adjust for orphan rows. Might create widows or make // endrow < startrow, which is handled later by deferring the table if (endrow < pdfTable.size() && endrow + minRowsTogether >= pdfTable.size()) { // page # maybe fall into table area, but usually that's column of // min value, usually that's enough space for both, or we should // disable page # on this page if (endrow + 1 == pdfTable.size() && endpos - pdfTable.getRowHeight(endrow) > 10) { // short by 1 row.. just squeeze it in endrow = pdfTable.size(); } else { // more than 1 row remains: shorten this page so orphans aren't lonely endrow = pdfTable.size() - minRowsTogether; } } if (endrow == pdfTable.size() || endrow - startrow >= minRowsTogether) { // this is the end of the table, or we have enough rows to bother printing pos = pdfTable.writeSelectedRows(0, pdfTable.getHeaderRows(), mlft, pos, cb); pos = pdfTable.writeSelectedRows(startrow, endrow, mlft, pos, cb); startrow = endrow; newPageInd = false; } else { // not the end of the table and not enough rows to print out if (newPageInd) throw new IllegalStateException( "PDF Page is not large engouh to display " + minRowsTogether + " row(s)"); endrow = startrow; } // new page if necessary (that is, when we aren't finished the table yet) if (endrow != pdfTable.size()) { document.newPage(); pos = pagesize.height() - mtop; newPageInd = true; } } } document.close(); }
From source file:CPS.Core.TODOLists.PDFExporter.java
License:Open Source License
private Document prepareDocument(String filename, final String title, final String author, final String creator, final Rectangle pageSize) { System.out.println("DEBUG(PDFExporter): Creating document: " + filename); Document d = new Document(); d.setPageSize(pageSize);/*from ww w. jav a 2 s . c o m*/ // TODO alter page orientation? maybe useful for seed order worksheet d.addTitle(title); d.addAuthor(author); // d.addSubject( ); // d.addKeywords( ); d.addCreator(creator); // left, right, top, bottom - scale in points (~72 points/inch) d.setMargins(35, 35, 35, 44); try { PdfWriter writer = PdfWriter.getInstance(d, new FileOutputStream(filename)); // add header and footer writer.setPageEvent(new PdfPageEventHelper() { public void onEndPage(PdfWriter writer, Document document) { try { Rectangle page = document.getPageSize(); PdfPTable head = new PdfPTable(3); head.getDefaultCell().setBorderWidth(0); head.getDefaultCell().setHorizontalAlignment(PdfPCell.ALIGN_LEFT); head.addCell(new Phrase(author, fontHeadFootItal)); head.getDefaultCell().setHorizontalAlignment(PdfPCell.ALIGN_CENTER); head.addCell(new Phrase(title, fontHeadFootReg)); head.getDefaultCell().setHorizontalAlignment(PdfPCell.ALIGN_RIGHT); head.addCell(""); head.setTotalWidth(page.getWidth() - document.leftMargin() - document.rightMargin()); head.writeSelectedRows(0, -1, document.leftMargin(), page.getHeight() - document.topMargin() + head.getTotalHeight(), writer.getDirectContent()); PdfPTable foot = new PdfPTable(3); foot.getDefaultCell().setBorderWidth(0); foot.getDefaultCell().setHorizontalAlignment(PdfPCell.ALIGN_LEFT); foot.addCell(new Phrase(creator, fontHeadFootItal)); foot.getDefaultCell().setHorizontalAlignment(PdfPCell.ALIGN_CENTER); foot.addCell(""); foot.getDefaultCell().setHorizontalAlignment(PdfPCell.ALIGN_RIGHT); foot.addCell(new Phrase("Page " + document.getPageNumber(), fontHeadFootReg)); foot.setTotalWidth(page.getWidth() - document.leftMargin() - document.rightMargin()); foot.writeSelectedRows(0, -1, document.leftMargin(), document.bottomMargin(), writer.getDirectContent()); } catch (Exception e) { throw new ExceptionConverter(e); } } }); } catch (Exception e) { e.printStackTrace(); } return d; }