From a9e628e7ec6b9d5bb38e64b7129c68320322033b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= Date: Fri, 21 Jun 2019 14:17:50 +0200 Subject: Ensure override style properly clears out previous style if set QApplication::setStyle has quite a bit of logic to clean up from the old style before setting a new one. If a style has been set before the application is created, it's not enough to just delete the existing style, we need to treat it like a normal style switch. Change-Id: I2bcc2eb75567bf1bc8a32ac31467b22315a70a0b Reviewed-by: Timur Pocheptsov --- src/widgets/kernel/qapplication.cpp | 32 ++++++++++++++------------------ 1 file changed, 14 insertions(+), 18 deletions(-) diff --git a/src/widgets/kernel/qapplication.cpp b/src/widgets/kernel/qapplication.cpp index f546ec9187..fc3b73924e 100644 --- a/src/widgets/kernel/qapplication.cpp +++ b/src/widgets/kernel/qapplication.cpp @@ -434,13 +434,6 @@ void QApplicationPrivate::process_cmdline() if (styleOverride.isEmpty() && qEnvironmentVariableIsSet("QT_STYLE_OVERRIDE")) styleOverride = QString::fromLocal8Bit(qgetenv("QT_STYLE_OVERRIDE")); - if (!styleOverride.isEmpty()) { - if (app_style) { - delete app_style; - app_style = 0; - } - } - // process platform-indep command line if (!qt_is_gui_used || !argc) return; @@ -606,8 +599,20 @@ void QApplicationPrivate::initialize() // needed for widgets in QML QAbstractDeclarativeData::setWidgetParent = QWidgetPrivate::setWidgetParentHelper; - if (application_type != QApplicationPrivate::Tty) - (void) QApplication::style(); // trigger creation of application style + if (application_type != QApplicationPrivate::Tty) { + if (!styleOverride.isEmpty()) { + if (auto *style = QStyleFactory::create(styleOverride.toLower())) { + QApplication::setStyle(style); + } else { + qWarning("QApplication: invalid style override '%s' passed, ignoring it.\n" + "\tAvailable styles: %s", qPrintable(styleOverride), + qPrintable(QStyleFactory::keys().join(QLatin1String(", ")))); + } + } + + // Trigger default style if none was set already + Q_UNUSED(QApplication::style()); + } #if QT_CONFIG(statemachine) // trigger registering of QStateMachine's GUI types qRegisterGuiStateMachine(); @@ -1036,15 +1041,6 @@ QStyle *QApplication::style() // Compile-time search for default style // QStyle *&app_style = QApplicationPrivate::app_style; - - if (!QApplicationPrivate::styleOverride.isEmpty()) { - const QString style = QApplicationPrivate::styleOverride.toLower(); - app_style = QStyleFactory::create(style); - if (Q_UNLIKELY(!app_style)) { - qWarning("QApplication: invalid style override passed, ignoring it.\n" - " Available styles: %s", qPrintable(QStyleFactory::keys().join(QLatin1String(", ")))); - } - } if (!app_style) app_style = QStyleFactory::create(QApplicationPrivate::desktopStyleKey()); -- cgit v1.2.3