Setting relative font sizes

Hi there,

Currently, I have some QLabels with rich text in them, such as "<font
size=+1>foo</font>". I'm trying to move this kind of font setting to a
style sheet in the .ui, or even set it via QLabel::setStyleSheet,
however setting the style sheet to "font-size: larger;" or anything
that's not a pixel or point value doesn't work, and I don't know if
it's possible to set the size in a relative way (like the +1 that's
being used at the moment).

Is the current way the only way to give the text a relative size?

Cheers,
Raphael
 
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[Stefan Majewsky]

Am Samstag 24 Oktober 2009 22:19:13 schrieb Raphael Kubo da Costa:
> Currently, I have some QLabels with rich text in them, such as "<font
> size=+1>foo</font>". I'm trying to move this kind of font setting to a
> style sheet in the .ui, or even set it via QLabel::setStyleSheet,
> however setting the style sheet to "font-size: larger;" or anything
> that's not a pixel or point value doesn't work, and I don't know if
> it's possible to set the size in a relative way (like the +1 that's
> being used at the moment).

font-size: 120%;
font-size: 1.2em;

Pack one of these in the stylesheet.

Greetings
Stefan


 
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"large" afaik should work
iirc, richtexts labels are silent QTextBrowsers, thus have support for the
html subset.

The direct way would of course be:

QFont fnt = widget->font();
if (fnt.pointSize() > -1)
   fnt.setPointSize(fnt.pointSize()+n);
else
   fnt.setPixelSize(fnt.pixelSizeSize()+m);
widget->setFont(fnt);

works for sure ;-)

Thomas

Am Saturday 24 October 2009 schrieb Raphael Kubo da Costa:

> Hi there,
>
> Currently, I have some QLabels with rich text in them, such as "<font
> size=+1>foo</font>". I'm trying to move this kind of font setting to a
> style sheet in the .ui, or even set it via QLabel::setStyleSheet,
> however setting the style sheet to "font-size: larger;" or anything
> that's not a pixel or point value doesn't work, and I don't know if
> it's possible to set the size in a relative way (like the +1 that's
> being used at the moment).
>
> Is the current way the only way to give the text a relative size?
>
> Cheers,
> Raphael
>
> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to
> >> unsubscribe <<
>

 
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On Sat, Oct 24, 2009 at 6:32 PM, Stefan Majewsky <majewsky@...> wrote:

> Am Samstag 24 Oktober 2009 22:19:13 schrieb Raphael Kubo da Costa:
>> Currently, I have some QLabels with rich text in them, such as "<font
>> size=+1>foo</font>". I'm trying to move this kind of font setting to a
>> style sheet in the .ui, or even set it via QLabel::setStyleSheet,
>> however setting the style sheet to "font-size: larger;" or anything
>> that's not a pixel or point value doesn't work, and I don't know if
>> it's possible to set the size in a relative way (like the +1 that's
>> being used at the moment).
>
> font-size: 120%;
> font-size: 1.2em;
>
> Pack one of these in the stylesheet.
>
> Greetings
> Stefan

fileName->setStyleSheet("font-size: 120%;");

Doesn't change the font size at all (the 'em' version doesn't work either).

What's weird is that Qt's documentation states explicitly in
http://doc.trolltech.com/4.6-snapshot/stylesheet-reference.html#list-of-properties
that only px and pt metrics are supported, but the example for the
"font" property uses "large" for font-size.
 
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On Sat, Oct 24, 2009 at 6:33 PM, Thomas Lübking <thomas.luebking@...> wrote:
> "large" afaik should work
> iirc, richtexts labels are silent QTextBrowsers, thus have support for the
> html subset.
I've set the textFormat property in the .ui file to Qt::RichText, but
setting font-size via setStyleSheet or the styleSheet property in the
.ui doesn't work unless it's in pt or px.

> The direct way would of course be:
>
> QFont fnt = widget->font();
> if (fnt.pointSize() > -1)
>   fnt.setPointSize(fnt.pointSize()+n);
> else
>   fnt.setPixelSize(fnt.pixelSizeSize()+m);
> widget->setFont(fnt);
>
> works for sure ;-)

Indeed, it worked :)

Is this the only possible way to do that then?

>
> Thomas
>
> Am Saturday 24 October 2009 schrieb Raphael Kubo da Costa:
>> Hi there,
>>
>> Currently, I have some QLabels with rich text in them, such as "<font
>> size=+1>foo</font>". I'm trying to move this kind of font setting to a
>> style sheet in the .ui, or even set it via QLabel::setStyleSheet,
>> however setting the style sheet to "font-size: larger;" or anything
>> that's not a pixel or point value doesn't work, and I don't know if
>> it's possible to set the size in a relative way (like the +1 that's
>> being used at the moment).
>>
>> Is the current way the only way to give the text a relative size?
>>
>> Cheers,
>> Raphael
>>
>> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to
>> >> unsubscribe <<
>>
>
>
>>> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to unsubscribe <<
>

 
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Am Saturday 24 October 2009 schrieb Raphael Kubo da Costa:
> Indeed, it worked :)
>
> Is this the only possible way to do that then?
Apparently.
I don't know if the css lack is a bug, but Qt is a cpp framework - i guess the
css support is rather intended to pass UI design choices to the end user.

Personally I'd always use the cpp API as setStyleSheet() (esp. on qApp) might
easily lead to conflicts. (Though it's conveniant, i know)

 
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