1 files changed, 54 insertions, 0 deletions
diff --git a/src/libs/installer/customcombobox.cpp b/src/libs/installer/customcombobox.cpp
new file mode 100644
index 000000000..998364fe4
--- /dev/null
+++ b/src/libs/installer/customcombobox.cpp
@@ -0,0 +1,54 @@
+/**************************************************************************
+**
+** Copyright (C) 2023 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Installer Framework.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#include "customcombobox.h"
+
+#include <QStylePainter>
+
+using namespace QInstaller;
+
+CustomComboBox::CustomComboBox(QWidget *parent)
+    : QComboBox(parent)
+{
+}
+
+void CustomComboBox::paintEvent(QPaintEvent *e)
+{
+    if (currentIndex() < 0 && !placeholderText().isEmpty()) {
+        QStylePainter painter(this);
+        painter.setPen(palette().color(QPalette::Text));
+        QStyleOptionComboBox opt;
+        initStyleOption(&opt);
+        painter.drawComplexControl(QStyle::CC_ComboBox, opt);
+        opt.palette.setBrush(QPalette::ButtonText, opt.palette.placeholderText());
+        opt.currentText = placeholderText();
+        painter.drawControl(QStyle::CE_ComboBoxLabel, opt);
+    } else {
+        QComboBox::paintEvent(e);
+    }
+}