So, after long time, finally I can fix it.
I don't know why, but *.ttf font file is works fine.
Qt says support both otf and ttf file, but it's not.

@ChrisW67 Really so hard the read the bug report and what I wrote? It is fixed in 6.2.3 and 6.3.x ...

@SamurayH I have encountered a similar problem and do not know how to solve it. It's not valid here either

QCheckBox::indicator:checked { image: url(img/checked_on_normal); } QCheckBox::indicator:unchecked { image: url(img/checked_off_normal); }

@artwaw said in Blurry and strange color when creating barcode using fonts:

@Proton-Phoenix I no longer have access to the Zebra I was using in the past (I changed the company since then).
Zebra printers are a story on their own to troubleshoot anyway...

General approach I used:

make sure the printer is configured properly in the system, with the default page size set to the target page size. query the QPrinterInfo instance for the default page size. use that data with QPdfWriter to render whatever text + barcode I need. remember DPI settings, either set what the manual for the printer says (ideal) or 300 (this didn't end well for Dymo printers I used for a while, needed exact DPI of 204 ;) ). print and enjoy.

In general getting this to work might be lots of trial and error, depending on the brand and drivers. But once it's done right it is literally zero maintenance for years.

<3 Thank you bro for everything <3

something like this. Try it out
QFont font("Courier New");
font.setStyleHint(QFont::Monospace);
QApplication::setFont(font); or
QCoreApplication::setFont(font);

I fixed this by setting QFont font = this->font(); to ui->appName->font(); in case anyone comes across this.

@JKSH Now looks like very similar. Thanks everyone for help :)

This is how we are sizing and centering text of variable size:

Text { text: sometext width: somewidth height: someheight font.pointSize: 25 minimumPointSize: 2 fontSizeMode: Text.Fit horizontalAlignment: Text.AlignHCenter verticalAlignment: Text.AlignVCenter }

When you don't want to let save it by Qt you have to read the font attributes one by one from your ini file and then construct it with the QFont ctor

I've tried this but it only scales the first character for some reason, and after I stop scaling the font size returns to normal

value = 0.3; // random value that increases the font size every time this part of the program is called for(int i = -1; i < textEdit->toPlainText().length() - 1; i++) { QTextCursor cursor = textEdit->textCursor(); cursor.setPosition(QTextCursor::Start + i, QTextCursor::MoveAnchor); // for some reason the first letter is start - 1 (start might be 1 and programming languages usually start counting at 0) cursor.setPosition(QTextCursor::Start + (i + 1), QTextCursor::KeepAnchor); // next position and keep anchor to highlight cursor.charFormat().font().setPointSize(cursor.charFormat().font().pointSize()*(value+1)); QTextCharFormat fmt; // resized but don't work fmt.setFontPointSize(cursor.charFormat().font().pointSize()*(value+1)); mergeFormatOnWordOrSelection(fmt); // resized and this works } void MainWindow::mergeFormatOnWordOrSelection(const QTextCharFormat &format) { QTextCursor cursor = textEdit->textCursor(); if (!cursor.hasSelection()) cursor.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor); cursor.mergeCharFormat(format); textEdit->mergeCurrentCharFormat(format); }

@Cleiton-Bueno Thank you very much for providing me more information on the Yocto language selection.

Thank you! I see you specified height and width manually. That works so far. I will use that.

@romsharkov said in Incorrect Font Metrics:

@raven-worx Didn't know about those methods, just tested it, for the lower case letter "g":
QFontMetricsF::leftBearing() returns: -4.17188
QFontMetricsF::rightBearing() returns: 0.6875
But even if I add the (negated) leftBearing to the total text width it still doesn't cover the tail entirely, so what's wrong here?

are you sure?!
Those values seem to be correct / make sense according to your posted screens.

Make sure that you add the absolute value (qAbs() for example). Also keep in mind that those values are only correct for the given font-size and that you can't add negative values to a image width.
I guess you are just doing incorrect calculations. Can you show the code of the calculation?

Alright, problem solved. As so many times, the bug was sitting between chair and keyboard.

In the FontLoader, I had the name property set. Which is set automatically if a font is loaded by source. https://doc.qt.io/qt-5/qml-qtquick-fontloader.html

Having the name property set while loading a font by source is no problem under macOS but under Android, one Devanagari font started to dominate all instances, where Devanagari symbols appeared and all logic, how fonts are applied falls apart.

@raven-worx
Thanks bro,
very helpfull.

Please report a bug at bugreports.qt.io.