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Thread: sizeHint based off visible text

  1. #1
    Join Date
    Aug 2008
    Location
    Iowa, USA
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    Qt products
    Qt4
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    Default sizeHint based off visible text

    I've searched the forums for sizeHint, but I have been unable to find out to figure out a good sizeHint based off the visible text when displaying html. Currently the sizeHint works wonderfully for all the text in the cell (I just see how many characters are in the QTextDocument), but not so good for just giving a good sizeHint for the characters my user will actually see. Can someone point me in the right direction?

  2. #2
    Join Date
    Aug 2008
    Location
    Iowa, USA
    Posts
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    Qt products
    Qt4
    Platforms
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    Default Re: sizeHint based off visible text

    I've found a solution that works. Here is the code
    Qt Code:
    1. if (qVariantCanConvert<QString>( index.data() ) ) {
    2. QString htmlText = qVariantValue<QString>(index.data());
    3. qtd.setHtml(htmlText);
    4. qtd.setTextWidth(-1);
    5. QSize toRet;
    6. toRet.setWidth( ceil( qtd.idealWidth() ) );
    7. toRet.setHeight( ceil( qtd.size().height() ) );
    8. return toRet;
    9. } else {
    10. return QItemDelegate::sizeHint(option, index);
    11. }
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    I'm sure there might be a better way, but this seems to work. The QTextDocument gives back a QSizeF, which means it might round down when it should be rounding up all the time. If someone knows of a better way to do this, I'm all ears.

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