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Respect user-defined Qt style instead of forcing Breeze (fixes #4332) #4354

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Respect user-defined Qt style instead of forcing Breeze (fixes #4332) #4354

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a00ca34
Comment out QApplication style setting
Lunix-420 Nov 11, 2025
dc57a01
Update application style and icon theme settings
Lunix-420 Nov 11, 2025
a02aac4
Refactor style and icon theme settings
Lunix-420 Nov 11, 2025
af250d1
Revert last change
Lunix-420 Nov 11, 2025
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7 changes: 4 additions & 3 deletions src/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,7 @@
#include <QLocalServer>
#include <QLoggingCategory>
#include <QProcessEnvironment>
#include <QQuickStyle>
#include <QQuickWindow>
#include <QSystemTrayIcon>
#include <csignal>
Expand Down Expand Up @@ -299,9 +300,9 @@ int main(int argc, char* argv[]) {

KColorSchemeManager::instance();

QApplication::setStyle(QStringLiteral("breeze"));
if (qEnvironmentVariableIsEmpty("QT_QUICK_CONTROLS_STYLE")) {
QQuickStyle::setStyle(QStringLiteral("org.kde.desktop"));
QIcon::setFallbackThemeName(QStringLiteral("breeze"));
if (qEnvironmentVariableIsEmpty("QT_QUICK_CONTROLS_STYLE") && QQuickStyle::name().isEmpty()) {
QQuickStyle::setStyle(QStringLiteral("org.kde.desktop"));
Comment on lines +304 to +305
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@CarlSchwan CarlSchwan Nov 11, 2025

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Suggested change
if (qEnvironmentVariableIsEmpty("QT_QUICK_CONTROLS_STYLE") && QQuickStyle::name().isEmpty()) {
QQuickStyle::setStyle(QStringLiteral("org.kde.desktop"));
if (qEnvironmentVariableIsEmpty("QT_QUICK_CONTROLS_STYLE")) {
QQuickStyle::setStyle(QStringLiteral("org.kde.desktop"));

org.kde.desktop allows to follow the QStyle in a QML app. Don't use any of the default QQuickStyle as they are all quite bad

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@Digitalone1 Digitalone1 Nov 11, 2025

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I applied this and Breeze style is used on Gnome.

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@Lunix-420 Lunix-420 Nov 11, 2025 •
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I tested this change. It seems to fix the icon issue, but it also causes most UI elements (~90%) to ignore the qt6ct theme again. Interestingly, very few elements, like text field backgrounds or the active part of the slider rails, still respect the theme apparently.

With this change:
before

Before:
after

}

// Parsing command line options
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