Am 14.01.2018 um 14:35 schrieb chitgoks:
i have not seen a sample appearance stream except that one involving raw
commands
In the CreateVisibleSignature2 code:
PDAppearanceDictionary appearance = new
PDAppearanceDictionary();
appearance.getCOSObject().setDirect(true);
PDAppearanceStream appearanceStream = new
PDAppearanceStream(form.getCOSObject());
appearance.setNormalAppearance(appearanceStream);
widget.setAppearance(appearance);
try (PDPageContentStream cs = new PDPageContentStream(doc,
appearanceStream))
{
// for 90° and 270° scale ratio of width / height
// not really sure about this
// why does scale have no effect when done in the form
matrix???
if (initialScale != null)
{
cs.transform(initialScale);
}
// show background (just for debugging, to see the rect
size + position)
cs.setNonStrokingColor(Color.yellow);
cs.addRect(-5000, -5000, 10000, 10000);
cs.fill();
// show background image
// save and restore graphics if the image is too large
and needs to be scaled
cs.saveGraphicsState();
cs.transform(Matrix.getScaleInstance(0.25f, 0.25f));
PDImageXObject img =
PDImageXObject.createFromFileByExtension(imageFile, doc);
cs.drawImage(img, 0, 0);
cs.restoreGraphicsState();
// show text
float fontSize = 10;
float leading = fontSize * 1.5f;
cs.beginText();
cs.setFont(font, fontSize);
cs.setNonStrokingColor(Color.black);
cs.newLineAtOffset(fontSize, height - leading);
cs.setLeading(leading);
cs.showText("(Signature very wide line 1)");
cs.newLine();
cs.showText("(Signature very wide line 2)");
cs.newLine();
cs.showText("(Signature very wide line 3)");
cs.endText();
}
// no need to set annotations and /P entry
ByteArrayOutputStream baos = new ByteArrayOutputStream();
doc.save(baos);
return new ByteArrayInputStream(baos.toByteArray());
}
}
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