Software does not utilise native icon theme

[Ragnar770]

There's a good chance this is a user error but the program doesn't utilise my icon theme which makes buttons harder to see with a dark theme. I've included a screenshot below.

Version: Latest commit (a7c9eb6), built with yay from the AUR
OS: Arch Linux (Kernel 5.4.2)
DE: KDE Plasma 5.17.4 / Qt 5.13.2
Icon theme: La Capitaine

Screenshot

[bmentink]

HI,
I am having a similar issue with icons, but the ones next to the Start/Stop Icon .. see attached:

This is running on Archlinux in a chroot environment, with latest git pull ..
Since these Icons are part of the build, do I have to execute the program from a specific directory to pick these up?

[Ho-Ro]

@Ragnar770 This looks exactly like I expected - what other look would you like to see? Are you talking about the top left icons?

This is what I see

The left/top run/pause icon comes from the system, the other three right/down (digitalphosphor = sine waves; zoom = search-plus; measure = drafting compass) are hardcoded into the binary, defined in the source code resources
I hacked a quick blue digitalphosphor.svg, please try if this approach gives better visibility, then I can provide also the other icons in blue:
EDIT: icons_blue_svg.zip

<svg
   xmlns:dc="http://purl.org/dc/elements/1.1/"
   xmlns:cc="http://creativecommons.org/ns#"
   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
   xmlns:svg="http://www.w3.org/2000/svg"
   xmlns="http://www.w3.org/2000/svg"
   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
   width="64"
   height="64"
   inkscape:export-xdpi="90"
   inkscape:export-ydpi="90">
  <g transform="translate(1,12.5)" >
    <path
       style="opacity:1.0;fill:none;stroke:#8080ff;stroke-width:4.0;stroke-linecap:round;stroke-opacity:1"
       d="m 1,20 c 13,-10 17,-10 30,0 13,10 17,10 30,0"
	/>
    <path
       style="opacity:1.0;fill:none;stroke:#4040ff;stroke-width:4.0;stroke-linecap:round;stroke-opacity:1"
       d="m 1,20 c 13,-22 17,-22 30,0 13,22 17,22 30,0"
    />
    <path
       style="opacity:1.0;fill:none;stroke:#0000ff;stroke-width:4.0;stroke-linecap:round;stroke-opacity:1"
       d="m 1,20 c 13,-39 17,-39 30,0 13,39 17,39 30,0"
    />
  </g>
</svg>

@bmentink No, the icons are linked as a resource file into the binary, as well as the DE, FR, IT, ... translations.

OpenHantek6022/openhantek/src/mainwindow.cpp

Line 44 in b0e7094

ui->actionDigital_phosphor->setIcon(QIcon(":/images/digitalphosphor.svg"));

You need only one binary (+ the needed system libraries + an udev rule unless you are root) to run the program.

Do you get some info or error message when starting in a terminal?

[bmentink]

@Ho-Ro
Thanks. The only message I get at the console is:
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'

I have tried this compiled both for ArchLinux(chroot) and Alpine Linux(native). Common to these, I am running the Awesome window manager ..

[Ho-Ro]

@bmentink: This issue was closed automatically by a commit for the original issue of @Ragnar770, but I'll keep an eye on your problem. Do you have access to a debian system, maybe virtual or from USB stic etc. where you can compare the Qt installation against your more minimal systems?

[bmentink]

@Ho-Ro
No, I do not have any other systems, they are all Alpine based ..
Can you give me a clue as to what Qt component I may be missing ..

[Ragnar770]

I hadn't looked at the source code so I had no idea they were hard coded, that makes a lot of sense actually. The blue icons are a bit easier to see but I'll play around with the vector files and see if I can get them to match my Qt theme, thanks!

[bmentink]

@Ho-Ro
I have fixed it my end. I needed to install qt5-qtsvg, suggest this gets added as a requirement check?

PS: Just did a git pull and now have the blue icons, which on my background does not look as good as the black .. my 2c

Maybe there should be a "dark theme" switch on the build for those with dark themes like @Ragnar770?
Personally I would like it to be consistently black like the run button ..

[Ho-Ro]

The blue theme was just a test, but it doesn't please me too.

[Ho-Ro]

Here are the icons for the dark theme, automatically switching depending on the lightness of the window border

QVariantMap colorMap;
QString iconPath = QString( ":/images/" );
if ( QPalette().color( QPalette::Window ).lightness() < 128 ) {// automatic light/dark icon switch
    iconPath += "darktheme/"; // select top window icons accordingly
    colorMap.insert("color-off", QColor(255,255,255));
    colorMap.insert("color-active", QColor(255,255,255));
}
...

[Ho-Ro]

@bmentink qt5-qtsvg was automatically loaded on my debian system with the other Qt devel stuff, but it is a good hint, I will add your finding to the build description.