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+/*******************************************************************************
+ * <copyright> Copyright 2014 by E-Government Innovation Center EGIZ, Graz, Austria </copyright>
+ * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
+ * joint initiative of the Federal Chancellery Austria and Graz University of
+ * Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ ******************************************************************************/
+package at.gv.egiz.pdfas.lib.impl.pdfbox2.positioning;
+
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Point2D;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.common.PDRectangle;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.gv.egiz.pdfas.common.exceptions.PdfAsException;
+import at.gv.egiz.pdfas.lib.impl.pdfbox2.utils.PdfBoxUtils;
+import at.gv.egiz.pdfas.lib.impl.stamping.IPDFVisualObject;
+import at.knowcenter.wag.egov.egiz.pdf.PositioningInstruction;
+import at.knowcenter.wag.egov.egiz.pdf.TablePos;
+import at.knowcenter.wag.egov.egiz.pdfbox2.pdf.PDFUtilities;
+
+/**
+ * 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 {
+
+ private static final Logger logger = LoggerFactory
+ .getLogger(Positioning.class);
+
+ /**
+ * 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, boolean legacy32, boolean legacy40) throws PdfAsException {
+ return adjustSignatureTableandCalculatePosition(pdfDataSource,
+ pdf_table, pos, legacy32, legacy40);
+ }
+
+ private static PDRectangle rotateBox(PDRectangle cropBox, int rotation) {
+ if (rotation != 0) {
+ Point2D upSrc = new Point2D.Float();
+
+ upSrc.setLocation(cropBox.getUpperRightX(),
+ cropBox.getUpperRightY());
+
+ Point2D llSrc = new Point2D.Float();
+ llSrc.setLocation(cropBox.getLowerLeftX(), cropBox.getLowerLeftY());
+ AffineTransform transform = new AffineTransform();
+ transform.setToIdentity();
+ if (rotation % 360 != 0) {
+ transform.setToRotation(Math.toRadians(rotation * -1), llSrc.getX(),
+ llSrc.getY());
+ }
+ Point2D upDst = new Point2D.Float();
+ transform.transform(upSrc, upDst);
+
+ Point2D llDst = new Point2D.Float();
+ transform.transform(llSrc, llDst);
+
+ float y1 = (float) upDst.getY();
+ float y2 = (float) llDst.getY();
+
+ if(y1 > y2) {
+ float t = y1;
+ y1 = y2;
+ y2 = t;
+ }
+
+ if(y1 < 0) {
+ y2 = y2 + -1 * y1;
+ y1 = 0;
+ }
+
+ float x1 = (float) upDst.getX();
+ float x2 = (float) llDst.getX();
+
+ if(x1 > x2) {
+ float t = x1;
+ x1 = x2;
+ x2 = t;
+ }
+
+ if(x1 < 0) {
+ x2 = x2 + -1 * x1;
+ x1 = 0;
+ }
+
+ cropBox.setUpperRightX(x2);
+ cropBox.setUpperRightY(y2);
+ cropBox.setLowerLeftY(y1);
+ cropBox.setLowerLeftX(x1);
+ }
+ return cropBox;
+ }
+
+ /**
+ * 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, boolean legacy40) throws PdfAsException {
+
+ PdfBoxUtils.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 = pdfDataSource.getPage(page-1);
+
+ PDRectangle cropBox = pdPage.getCropBox();
+
+ // fallback to MediaBox if Cropbox not available!
+
+ if (cropBox == null) {
+ cropBox = pdPage.getCropBox();
+ }
+
+ if (cropBox == null) {
+ cropBox = pdPage.getCropBox();
+ }
+
+ // getPagedimensions
+ // Rectangle psize = reader.getPageSizeWithRotation(page);
+ // int page_rotation = reader.getPageRotation(page);
+
+ // Integer rotation = pdPage.getRotation();
+ // int page_rotation = rotation.intValue();
+
+ int rotation = pdPage.getRotation();
+
+ logger.debug("Original CropBox: " + cropBox.toString());
+
+ cropBox = rotateBox(cropBox, rotation);
+
+ logger.debug("Rotated CropBox: " + cropBox.toString());
+
+ float page_width = cropBox.getWidth();
+ float page_height = cropBox.getHeight();
+
+ logger.debug("CropBox width: " + page_width);
+ logger.debug("CropBox heigth: " + page_height);
+
+ // 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.rotation);
+ }
+ // 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, pos.rotation);
+ }
+ // 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, legacy40);
+
+ 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, pos.rotation);
+ }
+ 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,
+ pos.rotation);
+
+ }
+
+}