Hi Evan,
We don't have a nice usermodel API to create multiple rich text runs, however it is possible to create such text by
manipulating low-level ppt records. An example is below.
package org.apache.poi.hslf.scratchpad;
import org.apache.poi.hslf.record.StyleTextPropAtom;
import org.apache.poi.hslf.record.TextCharsAtom;
import org.apache.poi.hslf.record.Record;
import org.apache.poi.hslf.model.*;
import org.apache.poi.hslf.model.textproperties.TextPropCollection;
import org.apache.poi.hslf.usermodel.SlideShow;
import org.apache.poi.hslf.usermodel.RichTextRun;
import java.awt.*;
import java.io.*;
public class TextChunks {
public static void main(String[] args) throws Exception {
SlideShow ppt = new SlideShow();
Slide slide = ppt.createSlide();
TextShape shape = new TextBox();
shape.setSheet(slide);
TextRun run = shape.getTextRun();
StyleTextPropAtom styleAtom = null;
TextCharsAtom textAtom = null;
for(Record r : run.getRecords()){
if(r instanceof StyleTextPropAtom) styleAtom = (StyleTextPropAtom)r;
else if(r instanceof TextCharsAtom) textAtom = (TextCharsAtom)r;
}
styleAtom.getParagraphStyles().clear();
styleAtom.getCharacterStyles().clear();
StringBuffer text = new StringBuffer();
TextPropCollection prProps, chProps;
RichTextRun rt;
String chunk;
//begin building rich text runs
chunk = "Apache";
text.append(chunk);
prProps = styleAtom.addParagraphTextPropCollection(chunk.length());
chProps = styleAtom.addCharacterTextPropCollection(chunk.length());
rt = new RichTextRun(shape.getTextRun(), text.length(), chunk.length(),
null, chProps, false, false);
rt.supplySlideShow(ppt);
rt.setFontColor(Color.red);
rt.setUnderlined(true);
rt.setFontSize(10);
chunk = " POI";
text.append(chunk);
prProps = styleAtom.addParagraphTextPropCollection(chunk.length());
chProps = styleAtom.addCharacterTextPropCollection(chunk.length());
rt = new RichTextRun(shape.getTextRun(), text.length(), chunk.length(),
null, chProps, false, false);
rt.supplySlideShow(ppt);
rt.setFontColor(Color.green);
rt.setItalic(true);
rt.setFontSize(24);
chunk = " is cool";
text.append(chunk);
prProps = styleAtom.addParagraphTextPropCollection(chunk.length());
chProps = styleAtom.addCharacterTextPropCollection(chunk.length());
rt = new RichTextRun(shape.getTextRun(), text.length(), chunk.length(),
null, chProps, false, false);
rt.supplySlideShow(ppt);
PPFont font = new PPFont();
font.setFontName("Times New Roman");
int fontIndex = ppt.addFont(font);
rt.setFontIndex(fontIndex);
rt.setBold(true);
rt.setFontSize(24);
chunk = "really!";
text.append(chunk);
prProps = styleAtom.addParagraphTextPropCollection(chunk.length());
chProps = styleAtom.addCharacterTextPropCollection(chunk.length());
rt = new RichTextRun(shape.getTextRun(), text.length(), chunk.length(),
null, chProps, false, false);
rt.supplySlideShow(ppt);
rt.setFontIndex(fontIndex);
rt.setSuperscript(100);
rt.setFontSize(20);
//sum of chunk lengths must be text.length+1, add a dummy char to the
end
styleAtom.addParagraphTextPropCollection(1);
styleAtom.addCharacterTextPropCollection(1);
String txt = text.toString();
textAtom.setText(txt);
shape.getTextRun().buildRichTextRuns(styleAtom.getParagraphStyles(),
styleAtom.getCharacterStyles(), txt);
//end building rich text runs
shape.setAnchor(new Rectangle(100, 100, 300, 50));
slide.addShape(shape);
FileOutputStream out = new FileOutputStream("test.ppt");
ppt.write(out);
out.close();
}
}
Regards,
Yegor
I have spent the past few days searching the web, searching this forum and
playing around with the Apache POI-HSLF API in an attempt to convert HTML
from a WYSIWYG editor into something that looks comparable inside of a PPT
TextBox. While I am able to pretty easily convert stuff like line breaks,
tabs and bullets to plain text, I am kind of stumped as to how I can display
text of different sizes/colors/bolding/underlining/etc inside the same
TextBox. I spotted another thread on here that said the addition of multiple
RichTextRun objects to a single TextBox was not yet supported in the API
which makes me think this might not even be possible.
Does anyone have any examples of something like this or any suggestions as
to how it could be implemented? Do I pretty much have to create multiple
TextBox objects, each with their own RichTextRun in order to show
differently formatted text when creating slides from scratch?
Any input would be appreciated. Thanks!
-Evan
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