diff options
Diffstat (limited to 'pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/positioning/Positioning.java')
| -rw-r--r-- | pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/positioning/Positioning.java | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/positioning/Positioning.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/positioning/Positioning.java new file mode 100644 index 00000000..340ba0bb --- /dev/null +++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/positioning/Positioning.java @@ -0,0 +1,251 @@ +package at.gv.egiz.pdfas.lib.impl.positioning; + +import at.gv.egiz.pdfas.common.exceptions.PdfAsException; +import at.gv.egiz.pdfas.lib.impl.stamping.IPDFVisualObject; +import at.gv.egiz.pdfas.common.utils.PDFUtils; +import at.knowcenter.wag.egov.egiz.pdf.PDFUtilities; +import at.knowcenter.wag.egov.egiz.pdf.PositioningInstruction; +import at.knowcenter.wag.egov.egiz.pdf.TablePos; +import org.apache.pdfbox.pdmodel.PDDocument; +import org.apache.pdfbox.pdmodel.PDPage; +import org.apache.pdfbox.pdmodel.common.PDRectangle; + +/** + * Created with IntelliJ IDEA. + * User: afitzek + * Date: 8/29/13 + * Time: 4:30 PM + * To change this template use File | Settings | File Templates. + */ +public class Positioning { + + /** + * The left/right margin. + */ + public static final float SIGNATURE_MARGIN_HORIZONTAL = 50f; + + /** + * The top/bottom margin. + */ + public static final float SIGNATURE_MARGIN_VERTICAL = 20f; + + /** + * Evalutates absolute positioning and prepares the PositioningInstruction for + * placing the table. + * + * @param pos + * The absolute positioning parameter. If null it is sought in the + * profile definition. + * @param signature_type + * The profile definition of the table to be written. + * @param pdfDataSource + * The pdf. + * @param pdf_table + * The pdf table to be written. + * @return Returns the PositioningInformation. + * @throws PdfAsException + * F.e. + */ + public static PositioningInstruction determineTablePositioning(TablePos pos, String signature_type, + PDDocument pdfDataSource, IPDFVisualObject pdf_table) throws PdfAsException + { + boolean legacy32 = false; + + //TODO: settings reader ... + + /* + if (pos == null) + { + String pos_string = SettingsReader.getInstance().getSetting(SignatureTypes.SIG_OBJ + signature_type + ".pos", null); + if (pos_string != null) + { + pos = PdfAS.parsePositionFromPosString(pos_string); + } + } + if (pos == null) + { + // The default algorithm. x,y,w =auto ,p=lastpage, f:ignored because + // y:auto + pos = new TablePos(); + } + + // afitzek + // Allow legacy positioning (3.2) for BRZ Templates ... + boolean legacy32 = false; + String leg = SettingsReader.getInstance().getSetting(SignatureTypes.SIG_OBJ + signature_type + ".legacy.pos", "false"); + if (leg != null) { + if ("true".equals(leg.trim())) { + legacy32 = true; + } + } + */ + // System.out.println("Tablepos="+pos); + return adjustSignatureTableandCalculatePosition(pdfDataSource, pdf_table, pos, legacy32); + } + + /** + * Sets the width of the table according to the layout of the document and + * calculates the y position where the PDFPTable should be placed. + * + * @param pdfDataSource + * The PDF document. + * @param pdf_table + * The PDFPTable to be placed. + * @return Returns the position where the PDFPTable should be placed. + * @throws PdfAsException + * F.e. + */ + public static PositioningInstruction adjustSignatureTableandCalculatePosition(final PDDocument pdfDataSource, + IPDFVisualObject pdf_table, TablePos pos, boolean legacy32) throws PdfAsException + { + + try { + PDFUtils.checkPDFPermissions(pdfDataSource); + // get pages of currentdocument + + int doc_pages = pdfDataSource.getNumberOfPages(); + int page = doc_pages; + boolean make_new_page = pos.isNewPage(); + if (!(pos.isNewPage() || pos.isPauto())) + { + // we should posit signaturtable on this page + + page = pos.getPage(); + // System.out.println("XXXXPAGE="+page+" doc_pages="+doc_pages); + if (page > doc_pages) + { + make_new_page = true; + page = doc_pages; + // throw new PDFDocumentException(227, "Page number is to big(=" + page+ + // ") cannot be parsed."); + } + } + + PDPage pdPage = (PDPage)pdfDataSource.getDocumentCatalog().getAllPages().get(page - 1); + PDRectangle cropBox = pdPage.getCropBox(); + + if(cropBox == null) { + cropBox = pdPage.findCropBox(); + } + + + if(cropBox == null) { + cropBox = pdPage.findMediaBox(); + } + + //TODO: fallback to MediaBox if Cropbox not available! + + // getPagedimensions + //Rectangle psize = reader.getPageSizeWithRotation(page); + //int page_rotation = reader.getPageRotation(page); + + //Integer rotation = pdPage.getRotation(); + //int page_rotation = rotation.intValue(); + + float page_width = cropBox.getWidth(); + float page_height = cropBox.getHeight(); + + // now we can calculate x-position + float pre_pos_x = SIGNATURE_MARGIN_HORIZONTAL; + if (!pos.isXauto()) + { + // we do have absolute x + pre_pos_x = pos.getPosX(); + } + // calculate width + // center + float pre_width = page_width - 2*pre_pos_x; + if (!pos.isWauto()) + { + // we do have absolute width + pre_width = pos.getWidth(); + if (pos.isXauto()) + { // center x + pre_pos_x = (page_width - pre_width) / 2; + } + } + final float pos_x = pre_pos_x; + final float width = pre_width; + // Signatur table dimensions are complete + pdf_table.setWidth(width); + pdf_table.fixWidth(); + //pdf_table.setTotalWidth(width); + //pdf_table.setLockedWidth(true); + + final float table_height = pdf_table.getHeight(); + // now check pos_y + float pos_y = pos.getPosY(); + + // in case an absolute y position is already given OR + // if the table is related to an invisible signature + // there is no need for further calculations + // (fixed adding new page in case of invisible signatures) + if (!pos.isYauto() || table_height == 0) + { + // we do have y-position too --> all parameters but page ok + if (make_new_page) + { + page++; + } + return new PositioningInstruction(make_new_page, page, pos_x, pos_y); + } + // pos_y is auto + if (make_new_page) + { + // ignore footer in new page + page++; + pos_y = page_height - SIGNATURE_MARGIN_VERTICAL; + return new PositioningInstruction(make_new_page, page, pos_x, pos_y); + } + // up to here no checks have to be made if Tablesize and Pagesize are fit + // Now we have to getfreespace in page and reguard footerline + float footer_line = pos.getFooterLine(); + float pre_page_length = PDFUtilities.calculatePageLength(pdfDataSource, page - 1, page_height - footer_line, /*page_rotation,*/ legacy32); + if (pre_page_length == Float.NEGATIVE_INFINITY) + { + // we do have an empty page or nothing in area above footerline + pre_page_length = page_height; + // no text --> SIGNATURE_BORDER + pos_y = page_height - SIGNATURE_MARGIN_VERTICAL; + if (pos_y - footer_line <= table_height) + { + make_new_page = true; + if (!pos.isPauto()) + { + // we have to correct pagenumber + page = pdfDataSource.getNumberOfPages(); + } + page++; + // no text --> SIGNATURE_BORDER + pos_y = page_height - SIGNATURE_MARGIN_VERTICAL; + } + return new PositioningInstruction(make_new_page, page, pos_x, pos_y); + } + final float page_length = pre_page_length; + // we do have text take SIGNATURE_MARGIN + pos_y = page_height - page_length - SIGNATURE_MARGIN_VERTICAL; + if (pos_y - footer_line <= table_height) + { + make_new_page = true; + if (!pos.isPauto()) + { + // we have to correct pagenumber in case of absolute page and not enough + // space + page = pdfDataSource.getNumberOfPages(); + } + page++; + // no text --> SIGNATURE_BORDER + pos_y = page_height - SIGNATURE_MARGIN_VERTICAL; + } + return new PositioningInstruction(make_new_page, page, pos_x, pos_y); + } finally { + if (pdfDataSource != null) { + try { + pdfDataSource.close(); + } catch (Exception e) { + } + } + } + } + +} |