[Qt-interest] text dimensions ?

[Dan White]

OK, how about this:

void fitStringInRect ( QRectF theRect, QString theString, QPainter*  
painter, Qt::Alignment flagz, qreal margin )
{
	painter->save() ;
	QFont foo = painter->font() ;
	
	foo.setPixelSize ( margin * theRect.height() ) ;
	QFontMetrics fm ( foo ) ;
	int textWidthInPixels = fm.width( theString );

	if ( textWidthInPixels > ( margin * theRect.width() ) )
	{	foo.setStretch
		(	( margin * theRect.width() * 100 ) / textWidthInPixels
		) ;			
	}
	painter->setFont ( foo ) ;
	painter->drawText ( theRect, flagz, theString ) ;
	
	painter->restore() ;
}



On Mar 17, 2009, at 12:33 PM, Martin Schröer wrote:

> Yes, that's where i'm coming from.
> Tested that, but that one simply ignored the text dimensions.
>
> Martin
>
> ygor at comcast.net schrieb:
>> Have you considered
>>
>> void QPainter::drawText ( const QRect(F) & rectangle, int flags,  
>> const QString & text, QRect(F) * boundingRect = 0 )
>>
>> ?
>>
>> <http://doc.trolltech.com/4.5/qpainter.html#drawText-10>
>> <http://doc.trolltech.com/4.5/qpainter.html#drawText-11>
>>
>> ----- Original Message -----
>> From: Martin Schröer <gordon at gordonswelt.de>
>> To: QT Interest List <qt-interest at trolltech.com>
>> Sent: Tue, 17 Mar 2009 15:24:42 +0000 (UTC)
>> Subject: Re: [Qt-interest] text dimensions ?
>>
>> Well, okey. I thought of this approach myself but discarded it for  
>> being
>> ... dirty.
>> No better way of achieving it ?
>>
>> Anyway, before i forget:
>> Thank you Jesus, for your very quick reply !
>>
>> Martin
>>
>> Jesús Fernández schrieb:
>>
>>> So, you need to try diferent dimesions and stop at the maximum size:
>>>
>>> /For example/
>>> void GraphicsShapeItem::resized()
>>> {
>>>     QRectF r=boundingRect();
>>>     QFont font;
>>>     QFontMetrics fontMetrics;
>>>     QString text=tr("Sample text");
>>>     int height, width;
>>>
>>>     do {
>>>         font.setPointSize(font.pointSize()+1);
>>>         fontMetrics=QFontMetrics(font);
>>>         height=fontMetrics.height();
>>>         width=fontMetrics.width(text);
>>>     }while(r.width>width && r.height>height);
>>> }
>>>
>>> On Tue, Mar 17, 2009 at 4:06 PM, Martin Schröer  
>>> <gordon at gordonswelt.de
>>> <mailto:gordon at gordonswelt.de>> wrote:
>>>
>>>     Yes, this is nice - but only for the 'to' direction.
>>>     What if i have a rectangle in which i want to render a text  
>>> given ?
>>>     How to find out what font size to use ?
>>>
>>>
>>>     Martin
>>>
>>>     Jesús Fernández schrieb:
>>>> Read this:
>>>>
>>>> http://doc.trolltech.com/4.5/qfontmetrics.html
>>>>
>>>> Regards
>>>>
>>>> On Tue, Mar 17, 2009 at 3:50 PM, Martin Schröer
>>>     <gordon at gordonswelt.de <mailto:gordon at gordonswelt.de>
>>>> <mailto:gordon at gordonswelt.de <mailto:gordon at gordonswelt.de>>>
>>>     wrote:
>>>>
>>>>     Hi list.
>>>>
>>>>     I have to drawText on a GraphicsScene.
>>>>     Does anybody know a good practice to do this, considering the
>>>>     [dynamic]
>>>>     size of the text given to be drawn ?
>>>>     I want to have the text fill a certain area in original
>>>     scale, plus
>>>>     having it resize along with the whole scene,
>>>>     so e.g. it always fills the same region within the scene.
>>>>
>>>>     Like giving a text 'rate this scene 'scary'', being always  
>>>> shown
>>>>     in the
>>>>     bottom right corner of the scene
>>>>     within a region that is scene.width() /4, scene.height() /4.
>>>>
>>>>     I don't have troubles getting the size of a bounding rect
>>>     for doing
>>>>     that, what gives me headaches is
>>>>     how to find out which size the text has or has to have,
>>>     still being
>>>>     drawn in aspect when the scene
>>>>     dimensions changes.
>>>>
>>>>     Any help, as always, highly appreciated.
>>>>
>>>>     Martin
>>>>     _______________________________________________
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>>>     <mailto:Qt-interest at trolltech.com <mailto:Qt- 
>>> interest at trolltech.com>>
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>>>>
>>>>
>>>
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