Rotate an Itext7 table - rotation

Question

I made a table with Itext7 using the Table object and inserted into a Canvas object.
This is the table :
Now I would like to rotate the table (but not the page) to achieve this:
How can I rotate the Table or Canvas 270 degrees.
This is the code I use to generate the table (It is part of a larger project, however this is the method that generates the table) :
num_row = num_row + 1; // Indica il numero di riga della tabella
PdfDocument_Configurazione_Text cfgText;
if (intestazione) {
cfgText = cfg.getCfg_intestazione();
} else {
cfgText = cfg.getCfg_riga();
}
if (cfgText == null) {
throw new Exception("Configurazione testo " + (intestazione ? "intestazione" : "riga") + " null");
}
campi = campi == null ? new ArrayList<>() : campi;
Paragraph p;
PdfFont font = PdfFontFactory.createFont(cfgText.getTipo_font_testo());
table = new Table(cfg.getTabella_num_col());
for (int i = 1; i <= cfg.getTabella_num_col(); i++) {
Cell cell = new Cell();
p = new Paragraph("");
String str = campi.size() < i ? " " : campi.get(i - 1);
p.add(str);
p.setFont(font);
p.setFontSize(cfgText.getDim_font_testo());
if (cfgText.isTesto_bold()) {
p.setBold();
}
if (cfgText.isTesto_italic()) {
p.setItalic();
}
if (cfgText.isTesto_sottolineato()) {
p.setUnderline();
}
if (intestazione) {
if (cfg.getCol_int_border().containsKey(num_row)) { // Se nella mappa è presente il numero di riga per settaggio bordo
for (List border : UtilConvertListMap.convertListBorder(cfg.getCol_int_border().get(num_row))) { // Ciclo all'interno di una lista alla ricerca del bordo
if (border.get(0).equals(String.valueOf(i - 1))) { // Se nella lista è presente un numero di colonna uguale a quello che sta disegnando il programma
switch (border.get(1).toString().trim()) { // setto i relativi bordi per singola cella
case "BUTTOM":
if (border.get(2).toString().trim().equals("false")) {
cell.setBorderBottom(Border.NO_BORDER);
}
case "TOP":
if (border.get(2).toString().trim().equals("false")) {
cell.setBorderTop(Border.NO_BORDER);
}
case "LEFT":
if (border.get(2).toString().trim().equals("false")) {
cell.setBorderLeft(Border.NO_BORDER);
}
case "RIGHT":
if (border.get(2).toString().trim().equals("false")) {
cell.setBorderRight(Border.NO_BORDER);
}
}
}
}
}
} else { // per le righe dati manipolo solo bordi colonne le righe saranno tutte uguali
if (cfg.getCol_dati_border((i - 1), "BUTTOM") == false) {
cell.setBorderBottom(Border.NO_BORDER);
}
if (cfg.getCol_dati_border((i - 1), "TOP") == false) {
cell.setBorderTop(Border.NO_BORDER);
}
if (cfg.getCol_dati_border((i - 1), "LEFT") == false) {
cell.setBorderLeft(Border.NO_BORDER);
}
if (cfg.getCol_dati_border((i - 1), "RIGHT") == false) {
cell.setBorderRight(Border.NO_BORDER);
}
}
if (intestazione) {
cell.setTextAlignment(TextAlignment.valueOf(cfg.getCol_int_allign(num_row, (i - 1)).toString()));
} else {
cell.setTextAlignment(cfg.getCol_dati_allign(i - 1, intestazione));
}
if (intestazione) {
p.setWidth((float) cfg.getCol_int_width(num_row, (i - 1)));
} else {
p.setWidth((float) cfg.getCol_dati_width(i - 1));
}
cell.setWidth(p.getWidth());
cell.add(p);
p.setProperty(Property.OVERFLOW_X, OverflowPropertyValue.valueOf("FIT"));
table.setHeight((float) cfg.getRig_heigth());
if (intestazione) {
table.addCell(cell);
} else {
table.addCell(cell);
}
}
MinMaxWidth minMaxWidth = ((TableRenderer) table.createRendererSubTree().setParent(canvas.getRenderer())).getMinMaxWidth();
float minWidth = minMaxWidth.getMinWidth();
float maxWidth = minMaxWidth.getMaxWidth();
rectangle.setWidth(maxWidth);
canvas.add(table);
table.flushContent();
This piece of code generates the canvas :
cfg = cfgn;
pages = pdfDocument.getPage(numero_pagina);
pdfCanvas = new PdfCanvas(pages);
rectangle = new Rectangle(cfg.getPos_x_tabella(), cfg.getPos_y_tabella(), 100, 200);
canvas = new Canvas(pdfCanvas, rectangle);
canvas.setBorder(Border.NO_BORDER);

Answer 1

The first idea would be to set the RotationAngle property of the table
table.setRotationAngle(-Math.PI/2);
canvas.add(table);
(RotateSomeContent test testForDropVidProperty)
Unfortunately this property currently (7.2.4-SNAPSHOT) seems not to be supported by the Table class.
What you can always do, though, is rotate the PdfCanvas on which the table is drawn, e.g. like this:
PdfCanvas pdfCanvas = new PdfCanvas(page);
// Rectangle for the table in upright page coordinates
Rectangle rectangle = new Rectangle(100, 100, 400, 700);
// show rectangle area
pdfCanvas.saveState();
pdfCanvas.setFillColor(new DeviceRgb(255, 255, 128));
pdfCanvas.rectangle(rectangle);
pdfCanvas.fill();
pdfCanvas.restoreState();
// apply a translation and a rotation so that the table will be rotated
// and the origin will be in the lower left corner of the rectangle
AffineTransform transform = AffineTransform.getTranslateInstance(rectangle.getLeft(), rectangle.getTop());
transform.rotate(-Math.PI/2);
pdfCanvas.concatMatrix(transform);
Rectangle rotatedRectangle = new Rectangle(0, 0, rectangle.getHeight(), rectangle.getWidth());
try ( Canvas canvas = new Canvas(pdfCanvas, rotatedRectangle) ) {
Table table = new Table(5);
table.addHeaderCell("DEBITO");
table.addHeaderCell("INTERESSI DI MORA");
table.addHeaderCell("ONERI DI RISCOSSIONE");
table.addHeaderCell("SPESE DI NOTIFICA\nE ACCESSORI");
table.addHeaderCell("SPESE ESECUTIVE");
table.addCell("3.304,24");
table.addCell("0,00");
table.addCell("183,55");
table.addCell("8,75");
table.addCell("0,00");
canvas.add(table);
}
(RotateSomeContent test testForDropVid)
The result looks like this:
(I marked the rectangle area in yellow for illustration only.)