I committed the fix that increases visibility of getTextHeight() in r1205902.
>
> Also, when I use the calculation, it gets the same results as the
> home-grown algorithm I had been using in the test case I've included below
> (not really a test case, since I can't compare the end result in the file).
> Essentially, I create a text box with a known width (the 82), insert a
> paragraph, then measure the height of the text, and then reshape the anchor
> of the text box to use that height. However, in this case, it comes up with
> a height of 6. This represents a single line for the text box. However,
> when I open the file, the text wraps and ends up showing two lines.
>
> I'm going to look through the code and see if I can find out why that is,
> but wanted to run this code past you first and see if I'm doing something
> wrong.
>
it looks like a rounding issue. For width=82 the text is wrapped and
for width=83 it fits on one line. My advise is to always give an extra
pixel to compensate rounding.
Yegor
> On a positive note, for most every other text sample that I'm trying, it
> works correctly.
>
> Thanks,
> Mike
>
> Code sample:
>
> public void testTextBreaking() throws Exception {
> XMLSlideShow ppt = new XMLSlideShow();
> XSLFSlide slide = ppt.createSlide();
>
> XSLFTextBox elementTextBox = slide.createTextBox();
> elementTextBox.setAnchor(new Rectangle(20, 20, 82, 1));
> elementTextBox.setBottomInset(0);
> elementTextBox.setTopInset(0);
> elementTextBox.setLeftInset(0);
> elementTextBox.setRightInset(0);
> XSLFTextRun elementTextRun =
> elementTextBox.addNewTextParagraph().addNewTextRun();
>
> elementTextRun.setFontFamily("Arial");
> elementTextRun.setFontSize(6);
> elementTextRun.setText("25000.000001 - 31680.000000");
>
> elementTextBox.setAnchor(new Rectangle(20, 20, 82,
> (int)elementTextBox.getTextHeight()));
>
> File file = new File("testTextBreaking.pptx");
> BufferedOutputStream os = new BufferedOutputStream(new
> FileOutputStream(file));
> try {
> ppt.write(os);
> } finally {
> os.close();
> }
> }
>
> On Tue, Nov 22, 2011 at 11:29 PM, Yegor Kozlov <[email protected]>wrote:
>
>> XSLFTextShape#getTextHeight() returns the cumulative height occupied
>> by the text, but this method is private for now. The implementation is
>> pretty complex and takes into account all character and paragraph
>> properties such as font size and family, line spacing, spacings before
>> and after paragraphs, margins, indents, etc.
>>
>> I'm going to make it public. For now you can call it via reflection or
>> apply this change to trunk and use your custom build.
>>
>> Yegor
>>
>> On Wed, Nov 23, 2011 at 2:51 AM, Mike Lundin <[email protected]> wrote:
>> > I have a text box with a set width (essentially, a entry in a column). I
>> > would like to add text to the text box and determine how much vertical
>> > space that text will take up with the document. This will allow me to
>> > position the next element just below the current one.
>> >
>> > I'm currently performing an estimation of the height based on a
>> FontMetrics
>> > object, but it's not exact and will sometimes result it large gaps or
>> text
>> > running over other elements.
>> >
>> > Is there a way to do this?
>> >
>> > Thanks,
>> > Mike
>> >
>>
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