private void breakPage(PDDocument document, PrintCursor cursor, PrintData printData)
throws IOException {
if (cursor.currentStream != null) {
cursor.currentStream.close();
}
if (printData.templateResource == null) {
document.addPage(new PDPage(printData.pageConfig.getPageSize()));
} else {
PDDocument templateDoc = PDDocument.load(printData.templateResource.getInputStream());
cursor.cacheTempalte(templateDoc);
PDPage templatePage = templateDoc.getDocumentCatalog().getPages().get(0);
document.importPage(templatePage);
}
PDPage currPage = document.getDocumentCatalog().getPages().get(++cursor.currentPageNumber);
cursor.currentStream =
new PDPageContentStream(document, currPage, PDPageContentStream.AppendMode.APPEND, false);
cursor.yPos = printData.pageConfig.getStartY(cursor.currentPageNumber);
cursor.xPos = printData.pageConfig.getStartX();
}
/**
* @param pageConfig page config
* @param report the report to print
* @return the printed PdfBox document
* @throws java.io.IOException
*/
public PDDocument generate(
PdfPageLayout pageConfig,
Resource templateResource,
PdfReportStructure report,
PDDocument document)
throws IOException {
PrintData printData = new PrintData(templateResource, pageConfig);
PrintCursor cursor = new PrintCursor();
breakPage(document, cursor, printData);
float maxWidth = pageConfig.getUsableWidth();
int reportElementIndex = 0;
ReportElement currentReportElement =
report.getElements().isEmpty() ? null : report.getElements().get(reportElementIndex);
ReportElement nextReportElement = null;
while (currentReportElement != null) {
boolean forceBreak = false;
// currentReportElement.setFontLib(fontLibrary);
float height = currentReportElement.getHeight(maxWidth);
if (cursor.yPos - height < pageConfig.getLastY(cursor.currentPageNumber)) {
// out of bounds
if (currentReportElement.isSplitable()
&& currentReportElement instanceof ReportTable
&& (cursor.yPos - currentReportElement.getFirstSegmentHeight(maxWidth))
>= pageConfig.getLastY(cursor.currentPageNumber)) {
// it's a Table out of bounds, so we also do a height split
ReportElement[] twoElements =
currentReportElement.split(
maxWidth, cursor.yPos - pageConfig.getLastY(cursor.currentPageNumber));
if (twoElements.length != 2) {
throw new IllegalStateException("The split method should always two parts.");
}
currentReportElement = twoElements[0];
nextReportElement = twoElements[1];
if (((ReportTable) currentReportElement).getExtraSplitting()) {
forceBreak = true;
}
} else if (currentReportElement.isSplitable()
&& (cursor.yPos - currentReportElement.getFirstSegmentHeight(maxWidth)
>= pageConfig.getLastY(cursor.currentPageNumber))) {
ReportElement[] twoElements = currentReportElement.split(maxWidth);
if (twoElements.length != 2) {
throw new IllegalStateException("The split method should always two parts.");
}
currentReportElement = twoElements[0];
nextReportElement = twoElements[1];
} else {
breakPage(document, cursor, printData);
continue;
}
}
// without this block pdfbox 2.0.2 does not render properly
// TODO: find a more elegant solution
cursor.currentStream.close();
PDPageTree pageTree = document.getDocumentCatalog().getPages();
PDPage currPage = pageTree.get(pageTree.getCount() - 1);
cursor.currentStream =
new PDPageContentStream(document, currPage, PDPageContentStream.AppendMode.APPEND, false);
// ---
float nextY =
currentReportElement.print(
document,
cursor.currentStream,
cursor.currentPageNumber,
cursor.xPos,
cursor.yPos,
maxWidth);
nextY -= pageConfig.getLineDistance();
cursor.imageList.addAll(currentReportElement.getImageIntents());
currentReportElement = nextReportElement;
nextReportElement = null;
if (currentReportElement == null && reportElementIndex + 1 < report.getElements().size()) {
currentReportElement = report.getElements().get(++reportElementIndex);
}
cursor.yPos = nextY;
if (forceBreak) {
breakPage(document, cursor, printData);
}
}
cursor.currentStream.close();
report.expandPagesStaticElements(cursor.currentPageNumber + 1);
for (ReportElementStatic staticElem : report.getStaticElements()) {
staticElem.print(document, null, 0, 0, 0, 0);
}
printImages(document, cursor);
return document;
}
