/**
* Write out the columns. After writing, use {@link #isOverflow()} to see if all text was written.
*
* @param canvas PdfContentByte to write with
* @param document document to write to (only used to get page limit info)
* @param documentY starting y position to begin writing at
* @return the current height (y position) after writing the columns
* @throws DocumentException on error
*/
public float write(PdfContentByte canvas, PdfDocument document, float documentY)
throws DocumentException {
this.document = document;
columnText.setCanvas(canvas);
if (columnDefs.isEmpty()) {
throw new DocumentException("MultiColumnText has no columns");
}
overflow = false;
float currentHeight = 0;
boolean done = false;
try {
while (!done) {
if (top == AUTOMATIC) {
top =
document.getVerticalPosition(
true); // RS - 07/07/2005 - Get current doc writing position for top of columns on
// new page.
} else if (nextY == AUTOMATIC) {
nextY =
document.getVerticalPosition(
true); // RS - 07/07/2005 - - Get current doc writing position for top of columns
// on new page.
}
ColumnDef currentDef = (ColumnDef) columnDefs.get(getCurrentColumn());
columnText.setYLine(top);
float[] left = currentDef.resolvePositions(Rectangle.LEFT);
float[] right = currentDef.resolvePositions(Rectangle.RIGHT);
if (document.isMarginMirroring() && document.getPageNumber() % 2 == 0) {
float delta = document.rightMargin() - document.left();
left = (float[]) left.clone();
right = (float[]) right.clone();
for (int i = 0; i < left.length; i += 2) {
left[i] -= delta;
}
for (int i = 0; i < right.length; i += 2) {
right[i] -= delta;
}
}
currentHeight = Math.max(currentHeight, getHeight(left, right));
if (currentDef.isSimple()) {
columnText.setSimpleColumn(left[2], left[3], right[0], right[1]);
} else {
columnText.setColumns(left, right);
}
int result = columnText.go();
if ((result & ColumnText.NO_MORE_TEXT) != 0) {
done = true;
top = columnText.getYLine();
} else if (shiftCurrentColumn()) {
top = nextY;
} else { // check if we are done because of height
totalHeight += currentHeight;
if ((desiredHeight != AUTOMATIC) && (totalHeight >= desiredHeight)) {
overflow = true;
break;
} else { // need to start new page and reset the columns
documentY = nextY;
newPage();
currentHeight = 0;
}
}
}
} catch (DocumentException ex) {
ex.printStackTrace();
throw ex;
}
if (desiredHeight == AUTOMATIC && columnDefs.size() == 1) {
currentHeight = documentY - columnText.getYLine();
}
return currentHeight;
}
/**
* Add a new column. The parameters are limits for each column wall in the format of a sequence of
* points (x1,y1,x2,y2,...).
*
* @param left limits for left column
* @param right limits for right column
*/
public void addColumn(float[] left, float[] right) {
ColumnDef nextDef = new ColumnDef(left, right);
if (!nextDef.isSimple()) simple = false;
columnDefs.add(nextDef);
}
