public class SelectionOutputTarget extends OutputTarget
An OutputTarget derivative that restricts the content added to the given
StringBuffer to that within the starting and ending selection points
specified in the constructor. This implementation would most commonly be paired with
an interactive UI, where a user would be able to specify a range of content to be
selected.
Example:
float x1 = 0, y1 = 450, x2 = 390, y2 = 72; Document pdf = PDF.open(pdfFile); StringBuffer sb = new StringBuffer(); SelectionOutputTarget tgt = new SelectionOutputTarget(sb, x1, y1, x2, y2); pdf.getPage(0).pipe(tgt); p.pipe(tgt); pdf.close(); String selectedText = sb.toString();Note that this
OutputHandler retains OutputTarget's read-ordering
and segmentation semantics, so the selection's start and end points are interpreted
within that context; they are not the corners of a bounding or crop box as with
RegionOutputTarget. That is, a start point that is within the first column of a page
and an end point in the second column will result in all of the intervening text
being extracted.
sink| Constructor and Description |
|---|
SelectionOutputTarget(java.lang.StringBuffer sb,
float x1,
float y1,
float x2,
float y2) |
| Modifier and Type | Method and Description |
|---|---|
void |
endPage(Page p)
Invoked when PDFxStream has finished processing a page
|
void |
startPage(Page p)
Invoked when a page is about to be processed.
|
void |
textUnit(TextUnit ch)
Default implementation that writes the character run specified by the given
TextUnit instance to the Appendable held by this OutputTarget. |
forBuffer, forWriter, getConfig, getObject, linebreaks, setConfig, spaces, write, write, write, writeendBlock, endLine, endPDF, startBlock, startLine, startPDFpublic SelectionOutputTarget(java.lang.StringBuffer sb,
float x1,
float y1,
float x2,
float y2)
public void startPage(Page p)
OutputHandlerstartPage in class OutputTargetp - a reference to the Page that is about to be processedpublic void endPage(Page p)
OutputHandlerendPage in class OutputTargetp - a reference to the Page that has been processedpublic void textUnit(TextUnit ch)
OutputTarget
Default implementation that writes the character run specified by the given
TextUnit instance to the Appendable held by this OutputTarget.
This implementation is very straightforward; it is provided here for illustrative purposes only:
if (tu.getCharacterSequence() == null) {
// no mapped sequence, append direct character code conversion
int cc = tu.getCharCode();
if (cc >= 32) write((char)cc);
} else {
write(tu.getCharacterSequence());
}
textUnit in class OutputTarget