retain the font in every system

Question

In pyqt5 application, i have applied a font for the label using css in qtdesigner

font: 57 68px "IntelOne Display Medium";
border: None;   

I build exe using pyinstaller and run in my windows machine it works fine, but when i run the same exe in different machine, the font is different, its not bold

my machine:

different machine:

how do i retain the fonts in all system?

Answer 1

You have to make sure the fonts are available, so the solution is to load it using QFontDatabase.

For this to be available there are 2 options:

• Use --add-data:

├── fonts
└── main.py

import os
import sys
from pathlib import Path

from PyQt5.QtCore import QDir
from PyQt5.QtGui import QFontDatabase
from PyQt5.QtWidgets import QApplication


DIR_APPLICATION = (
    Path(sys.executable).parent
    if getattr(sys, "frozen", False)
    else Path(__file__).resolve().parent
)


def load_fonts_from_dir(directory):
    families = set()
    for fi in QDir(directory).entryInfoList(["*.ttf", "*.woff", "*.woff2"]):
        _id = QFontDatabase.addApplicationFont(fi.absoluteFilePath())
        families |= set(QFontDatabase.applicationFontFamilies(_id))
    return families


def main():

    app = QApplication(sys.argv)

    # LOAD FONTS
    font_dir = DIR_APPLICATION / "fonts"
    families = load_fonts_from_dir(os.fspath(font_dir))
    print(families)

    # FIXME

    sys.exit(app.exec_())


if __name__ == "__main__":
    main()

Command:

pyinstaller --add-data "fonts/*:fonts" --onefile main.py 

Note: In windows change : to ;.

• Use qresource:

├── fonts
├── main.py
├── resource.qrc
└── resource_rc.py

resource.qrc

<RCC>
    <qresource prefix="/">
        <file>fonts/foo.ttf</file>
        <file>fonts/bar.ttf</file>
        <file>fonts/baz.ttf</file>
    </qresource>
</RCC>

pyrcc5 resource.qrc -o resource_rc.py 

import os
import sys

from PyQt5.QtCore import QDir
from PyQt5.QtGui import QFontDatabase
from PyQt5.QtWidgets import QApplication

import resource_rc


def load_fonts_from_dir(directory):
    families = set()
    for fi in QDir(directory).entryInfoList(["*.ttf", "*.woff", "*.woff2"]):
        _id = QFontDatabase.addApplicationFont(fi.absoluteFilePath())
        families |= set(QFontDatabase.applicationFontFamilies(_id))
    return families


def main():

    app = QApplication(sys.argv)

    # LOAD FONTS
    font_dir = ":/fonts"
    families = load_fonts_from_dir(os.fspath(font_dir))
    print(families)

    # FIXME

    sys.exit(app.exec_())


if __name__ == "__main__":
    main()