How can i adjust text of a QWidget just as QMessageBox adjust text automatically ?

[Ahti]

Can i ? if yes how ?

this is what i do :

object->setStylesheet("font:16pt Arial;");

that makes the font size fixed/static but i want to make it dynamic ? i mean the text should fit itself in a widget on its own just as text in QMessageBox is adjusted on its own when the display resolution is changed.

[koahnig]

@Ahti

You can set the font for a widget also through setFont

If you specify a negative value of point size in the constructor you have default value for the system. Maybe this is of help for you.

[Ahti]

@koahnig How is setFont method different than stylesheet ? and what do you mean by "negative value of point size in the constructor" where is this point size ?

[koahnig]

@Ahti

Just follow the links (under "setFont" and "the contructor" in my previous post) to the parts of the documentation.

Sorry, I do not know the actual difference, but I would go for the font routines rather setting a style, but that is probably more a matter of taste. However, with setFont you can use also some defaults which you might to set as in your style.

[mrjj]

Hi
Do you mean to adjust the width of the widget ?
Like for text
"aaa"
it will be small
but for
"aaaaaaaaaaaaaaaaaaaaaaaaa"
it would be much wider?

[Ahti]

@mrjj I just want the text to fit in the QWidget so that i will get rid of text getting out of alignment in a widget problem. This happens when i run my app on different resolutions like 1440X900, 1920X1080, ect.

[mrjj]

@Ahti
Well how are you drawing the text ?
If you dont word wrap, then text will be cut when less screen space is available.

Do you u mean that text should shrink to fit inside the available widget rect?

[Ahti]

@mrjj yeah that is what i want although with word warp it appears on the next line that i don't want to happen i just want it appear in a single line and at the same time it should shrink to fit inside the available widget rect ??

this is how i draw text :

QLabel* EyeCare::constructLabel(QWidget *parent,QLabel *labelName,QString style,
                                     int x,int y,int w,int h,QString labelText){

    labelName = new QLabel(parent) ;
    labelName->setStyleSheet( style );
    labelName->setGeometry(x,y,w,h);
    labelName->setText(labelText);
    labelName->setAlignment(Qt::AlignCenter);
    return labelName ;
}
...
notificationHeader = constructLabel(homeBackground,notificationHeader,
                                         "color: #c8c8c8;",170,135,300,50,"Welcome To EyeCare") ;     
     notificationHeader->setAlignment(Qt::AlignCenter);
     homeLayout->addWidget(notificationHeader,3,0);

     notificationArea = constructLabel(homeBackground,notificationArea,"color: #c8c8c8;",
                                       0,188,640,45,"Protect your precious eyes as you compute.") ;
...

[mrjj]

Hi
you can use

QFontMetrics fm(font());
and fm.width(text()) to check size of text
if too wide, then you must reduce the font.setPointSize and see again.
Repeat until it fits.

https://stackoverflow.com/questions/40861305/dynamically-change-font-size-of-qlabel-to-fit-available-space