Font rendered in Linux Ubuntu 18.04 is not same as Embedded Linux

raj_badam

Hi,
I am using Qt5.6.3,
I have Qt/QML Application, in which I have loaded the Qt Font as below
My Application must run on platforms: Windows, Windows CE, Ubuntu 18.04 and Embeded Linux(built using Buildroot)

In Application, I am loading Font as below

QFont arialFont("Arial Unicode MS", 15);
QGuiApplication::setFont(arialFont);

In QML, I show a text as below

Text
    {
        id: txt

        font.pointSize:10
        color: "#1E1E1E"
        elide: Text.ElideRight
        horizontalAlignment: Text.AlignHCenter
        text: "Start Apt"
    }

The text is elided(looks different) in embedded Linux platform when compared with Ubuntu Linux desktop(18.04).

I managed to match fonts in windows with Ubuntu Linux desktop. By explicitly using freetype font engine in windows desktop.(modifying qt.conf)

Free type is used in Linux for font rendering and Qt is configured for system freetype. I used different freetype versions(2.9.1, 2.6.1, 2.5.3 and 2.3.12) and didn't see much variation.

I also gathered font information by logging them.

Values of font properties that are logged and are same in all platforms:

Text Width: 52
Font Point size: 10
Font Family: Arial Unicode MS
Font Pixel size: 13
Font letter spacing: 0
Font Weight: QFont:: Normal-50
Font Ratio: 1
Hinting Preference: PreferDefaultHinting
Capitalization: Capitalize
SpacingType: PercentageSpacing
Stretch: Unstretched
Style: Normal
StyleHint: AnyStyle
StyleStrategy: PreferDefault
Weight: Normal

Only below property is different

Text Painted Width: 48.35 in Linux Ubuntu and 47.39 in embedded Linux

Below picture shows the difference:

Left side is Ubuntu Linux Desktop(18.04) and right is Embedded Linux

Is there any way I can make fonts looks similar in all platforms?