ploedumv
By:
ploedumv

QFontDatabase addApplicationFont works in Embedded Linux, but not in Linux Ubuntu?

October 10, 2017 82 views
Control Panels Linux Commands Ubuntu 16.04

Hi,

I have an app developed with Qt 4.8 compiled for both Embedded Linux Arm as well as Linux Ubuntu. It uses a specific set of fonts which I need to have installed for it to run, something I do with QFontDatabase::addApplicationFont. Everything works fine when I compile for Embedded Linux, but when I do it for Linux Ubuntu, I got -1 and the fonts are not loaded..

I tried to find on the web a solution for the problem but I found no help. Similar problems were solved by updating Qt 4.6 to 4.7 (nothing of use) or by installing fontconfig, which I already have. Also I couldn't find anything useful in Qt Assistant and checked the paths to the .ttf files..

Any help will be appreciated.

Here is the code I'm using:

QFontDatabase::removeAllApplicationFonts();

QDir fontDir(DEFAULTFONTSPATH);
QStringList fontFileList = fontDir.entryList(QStringList("*.ttf"), QDir::Files | QDir::NoDotDot | QDir::NoDot);

mDebugS(QString("Found %1 fonts on folder theme/fonts").arg(fontFileList.size()));

//
qint32 fontId;

foreach (const QString& filename, fontFileList)
{
fontId = QFontDatabase::addApplicationFont(DEFAULTFONTSPATH "/" + filename);

if (Q_UNLIKELY(fontId == -1))
{
    const QString strTemp = QString("Unable to install font %1").arg(filename);

    mLog(strTemp);
    mDebugS(strTemp);
}
else
    applicationFontsIdList.append(fontId);

}

mDebugS(QString::number(applicationFontsIdList.size()) + " fonts are installed");

Help me.

Be the first one to answer this question.