Getting the bounding rect of a character in a QTextDocument

I am using QTextDocument for laying out some HTML text. This text gets rendered onto a QImage and its byte data is used to be displayed somewhere else.

Among other things I need to be able to get the x/y/w/h of a character in that QTextDocument. Based on some code here in the forum I am using the code below, but I am wondering whether there is an easier way to do that...

The class has two member variables:

Code:

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QTextDocument *m_pTextDocument;
QTextCursor *m_pTextCursor;

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And the code is:

Code:

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void CQtTextLayout::GetXYWHOfLayoutIndex( int index, float *flX, float *flY, float *flW, float *flH )
{
	if( m_pTextCursor )
	{
		m_pTextCursor->setPosition( index );
 
		const QTextBlock textCursorBlock = m_pTextCursor->block();
		const QRectF blockBoundingRect = m_pTextDocument->documentLayout()->blockBoundingRect( textCursorBlock );
		QTextFrameFormat rootFrameFormat = m_pTextDocument->rootFrame()->frameFormat();
 
		const QTextLayout *textCursorBlockLayout = textCursorBlock.layout();
		const int relativeCursorPositionInBlock = m_pTextCursor->position() - m_pTextCursor->block().position();
		QTextLine textLine = textCursorBlockLayout->lineForTextPosition( relativeCursorPositionInBlock );
 
		if ( textLine.isValid() ) {
			int pos = m_pTextCursor->position() - m_pTextCursor->block().position();
			*flY = textLine.lineNumber() * textLine.height() + blockBoundingRect.top();
			*flX = textLine.cursorToX(pos) + rootFrameFormat.leftMargin() + rootFrameFormat.padding();
			*flW = textLine.cursorToX(pos + 1) + rootFrameFormat.leftMargin() + rootFrameFormat.padding() - *flX;
			*flH = textLine.height();
		}
		else
		{
			*flX = 0.0;
			*flY = 0.0;
			*flW = 0.0;
			*flH = 0.0;
		}
	}
	else
	{
		*flX = 0.0;
		*flY = 0.0;
		*flW = 0.0;
		*flH = 0.0;
	}
	DebugLog( "GetXYWHOfLayoutIndex %.3f %.3f %.3f %.3f", *flX, *flY, *flW, *flH ); 
}

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