How to get boundingBox of a QTextTableCell

Question

I am using QTextDocument and needs to do some custom hit testing, for that I need to find boundingbox of QTextTableCell but couldn't find any way to figure it out. Can someone throw some light or any ideas on how I should be able to get that.

Answer 1

I found there wasn't anyway to do it without making any change to Qt code, here is diff of what I had to do.

    ==== //local/qt5/qtbase/src/gui/text/qabstracttextdocumentlayout.h#2 (text) ====

    @@ -92,6 +92,11 @@
         virtual QRectF frameBoundingRect(QTextFrame *frame) const = 0;
         virtual QRectF blockBoundingRect(const QTextBlock &block) const = 0;

    +    virtual QRectF cellBoundingRect(QTextTable &table, const QTextTableCell &cell) const
    +    {
    +        return QRectF();
    +    }
    +
         void setPaintDevice(QPaintDevice *device);
         QPaintDevice *paintDevice() const;


    ==== //local/qt5/qtbase/src/gui/text/qtextdocumentlayout.cpp#3 (text) ====

    @@ -3201,6 +3201,17 @@
         return QRectF(pos, data(table)->size.toSizeF());
     }

    +QRectF QTextDocumentLayout::cellBoundingRect( QTextTable &table, const QTextTableCell &cell) const
    +{
    +    Q_D(const QTextDocumentLayout);
    +    if (d->docPrivate->pageSize.isNull())
    +        return QRectF();
    +    d->ensureLayoutFinished();
    +    QTextTableData *td = static_cast(data(&table));
    +    QRectF cellRect = td->cellRect(cell);
    +    return cellRect;
    +}
    +
     QRectF QTextDocumentLayout::frameBoundingRect(QTextFrame *frame) const
     {
         Q_D(const QTextDocumentLayout);

    ==== //local/qt5/qtbase/src/gui/text/qtextdocumentlayout_p.h#1 (text) ====

    @@ -104,6 +104,8 @@

         bool contentHasAlignment() const;

    +    virtual QRectF cellBoundingRect(QTextTable &table, const QTextTableCell &cell) const;
    +
     protected:
         void documentChanged(int from, int oldLength, int length);
         void resizeInlineObject(QTextInlineObject item, int posInDocument, const QTextFormat &format);