I am using iText to render a document that has already been laid out by another
application, and I need to position the text as close as possible to that
produced by the primary application. For example, I know the width of each line
of text so I need iText to place a given text string with a given font at an
absolute position and fill an absolute width exactly. I couldn't find any way
to do this using PdfContext, so I thought I might try with setWordSpacing. Here
is my example formatted text in XML:
<TEXT x="1.2245" y="9.93" width="2.76" height="0.0759" fontFamily="Arial"
fontWeight="normal" fontStyle="normal" fontSize="6" fontColor="0" text="Lorem
ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse metus urna, "/>
<TEXT x="1.2245" y="9.83" width="2.76" height="0.0759" fontFamily="Arial"
fontWeight="normal" fontStyle="normal" fontSize="6" fontColor="0"
text="pharetra quis auctor eu, aliquet nec leo. Vivamus et eros nibh. Sed
imperdiet diam "/>
<TEXT x="1.2245" y="9.73" width="2.76" height="0.0759" fontFamily="Arial"
fontWeight="normal" fontStyle="normal" fontSize="6" fontColor="0" text="nibh.
Donec id quam enim. Nulla venenatis pellentesque magna, ac mollis est aliquet
"/>
<TEXT x="1.2245" y="9.63" width="2.76" height="0.0759" fontFamily="Arial"
fontWeight="normal" fontStyle="normal" fontSize="6" fontColor="0" text="ac. In
hac habitasse platea dictumst. Integer iaculis dolor nec enim auctor in "/>
<TEXT x="1.2245" y="9.530" width="2.76" height="0.0759" fontFamily="Arial"
fontWeight="normal" fontStyle="normal" fontSize="6" fontColor="0"
text="consectetur odio feugiat. Vivamus sem elit, interdum ultricies blandit
auctor, ornare "/>
And here is the code I am using to try and set the word spacing:
pdftxt.beginText();
pdftxt.setFontAndSize(font.getBaseFont(), new
Float(el2.getAttribute("fontSize")));
String txt = el2.getAttribute("text");
if ( Math.abs(Utilities.inchesToPoints(w) -
pdftxt.getEffectiveStringWidth(txt,true)) > 0 ) {
int spaces=0;
int chars=0;
for (int c=0; c < txt.length(); c++ ) {
if ( Character.isSpaceChar(txt.charAt(c))) spaces++;
else chars++;
}
float diff =
Utilities.inchesToPoints(w)-pdftxt.getEffectiveStringWidth(txt,true);
if ( spaces > 0 ) {
float ws = pdftxt.getWordSpacing() + (diff / spaces);
pdftxt.setWordSpacing(ws);
} else {
otherwise have to space out the chars
cs = pdftxt.getCharacterSpacing() + (diff/chars);
pdftxt.setCharacterSpacing(cs);
}
}
pdftxt.showTextAlignedKerned(com.itextpdf.text.Element.ALIGN_LEFT, txt,
Utilities.inchesToPoints(x), Utilities.inchesToPoints(y), 0);
pdftxt.endText();
The results from this aren't bad, but it doesn't give the really sharp right
alignment I am looking for. Any suggestions?
Thanks,
Darryl.
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