1 files changed, 73 insertions, 0 deletions
diff --git a/src/quicknativestyle/items/qquickstyleitemgroupbox.cpp b/src/quicknativestyle/items/qquickstyleitemgroupbox.cpp
new file mode 100644
index 0000000000..8ad0501483
--- /dev/null
+++ b/src/quicknativestyle/items/qquickstyleitemgroupbox.cpp
@@ -0,0 +1,73 @@
+// Copyright (C) 2020 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#include "qquickstyleitemgroupbox.h"
+
+QT_BEGIN_NAMESPACE
+
+QFont QQuickStyleItemGroupBox::styleFont(QQuickItem *control) const
+{
+    return style()->font(QStyle::CE_HeaderLabel, controlSize(control));
+}
+
+StyleItemGeometry QQuickStyleItemGroupBox::calculateGeometry()
+{
+    QStyleOptionGroupBox styleOption;
+    initStyleOption(styleOption);
+
+    StyleItemGeometry geometry;
+    geometry.minimumSize = style()->sizeFromContents(QStyle::CT_GroupBox, &styleOption, QSize(0, 0));
+
+    if (!control<QQuickGroupBox>()->title().isEmpty()) {
+        // We don't draw the title, but we need to take
+        // it into calculation for the control size
+        styleOption.text = QStringLiteral(" ");
+        styleOption.subControls |= QStyle::SC_GroupBoxLabel;
+    }
+
+    geometry.implicitSize = style()->sizeFromContents(QStyle::CT_GroupBox, &styleOption, contentSize());
+    styleOption.rect.setSize(geometry.implicitSize);
+    geometry.contentRect = style()->subControlRect(QStyle::CC_GroupBox, &styleOption, QStyle::SC_GroupBoxContents);
+    geometry.layoutRect = style()->subElementRect(QStyle::SE_GroupBoxLayoutItem, &styleOption);
+    geometry.ninePatchMargins = style()->ninePatchMargins(QStyle::CC_GroupBox, &styleOption, geometry.minimumSize);
+
+    const QQuickStyleMargins oldGroupBoxPadding = m_groupBoxPadding;
+    const QRect frame = style()->subControlRect(QStyle::CC_GroupBox, &styleOption, QStyle::SC_GroupBoxFrame);
+    m_groupBoxPadding = QQuickStyleMargins(QRect(QPoint(), geometry.implicitSize), frame);
+    if (m_groupBoxPadding != oldGroupBoxPadding)
+        emit groupBoxPaddingChanged();
+
+    const QPointF oldLabelPos = m_labelPos;
+    m_labelPos = style()->subControlRect(QStyle::CC_GroupBox, &styleOption, QStyle::SC_GroupBoxLabel).topLeft();
+    if (m_labelPos != oldLabelPos)
+        emit labelPosChanged();
+    return geometry;
+}
+
+void QQuickStyleItemGroupBox::paintEvent(QPainter *painter) const
+{
+    QStyleOptionGroupBox styleOption;
+    initStyleOption(styleOption);
+    style()->drawComplexControl(QStyle::CC_GroupBox, &styleOption, painter);
+}
+
+void QQuickStyleItemGroupBox::initStyleOption(QStyleOptionGroupBox &styleOption) const
+{
+    initStyleOptionBase(styleOption);
+    styleOption.subControls = QStyle::SC_GroupBoxFrame;
+    styleOption.lineWidth = 1;
+}
+
+QQuickStyleMargins QQuickStyleItemGroupBox::groupBoxPadding() const
+{
+    return m_groupBoxPadding;
+}
+
+QPointF QQuickStyleItemGroupBox::labelPos() const
+{
+    return m_labelPos;
+}
+
+QT_END_NAMESPACE
+
+#include "moc_qquickstyleitemgroupbox.cpp"