[Solved] Arm Linux Qt5.3.2 checklist to support simplified chinese?

Jeff Andle

When I debug my app under Ubuntu it displays Chinese characters OK. However under Arm/Linux it displays empty boxes. I conditionally load a simplified Chinese ttf or DejaVu Serif, depending on a setting.

I have a set of ttf's for DejaVu but a single file for SimpChinese.ttf (really DFSong1B-GB).
I have none nothing for the locale, etc.
If I knew what else to try I'd be better off :)

(SimpChinese.ttf (really DFSong1B-GB) was not loading proper unicode mapping...)

SGaist

Hi,

Might be a silly question but did you check that the font is loaded successfully ?

Jeff Andle

@SGaist - I am just starting to implement and debug it. All I know is that I set FontFamily to the name (absent ttf file extension) and the font ttf file is in the same directory that does launch. It occurs to me that "DFSong1B-GB" is probably the font family despite my renaming the file.

SGaist

Are you using QFontDatabase ?

Jeff Andle

I am simply using QFont to load a font. The problem was that the font I installed on the device did not support Unicode, I guess. I put unifont on the device and it works.

I am now down to legibility issues at the 10-12 pixel size allocations in the device. That is sufficient for Latin ASCII but not enough for Hanzi. I am looking for a better font face and balancing light/bold/etc. for readability.

QFont fontBold;
switch (HMI_settings.u16TextLang)
{
default:
    fontBold.setFamily((FontName)); //(QStringLiteral)
    break;

case Lang_SimpChinese:
    break;
}

printf ("%s\n", FontName.toLatin1().constData());
fontBold.setPixelSize(12*HMI_SCALE);
fontBold.setBold(true);
fontBold.setItalic(false);
fontBold.setWeight(75);
fontBold.setStyleStrategy(QFont::PreferAntialias);