1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtWidgets module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 #ifndef QGRAPHICSLAYOUTSTYLEINFO_P_H 40 #define QGRAPHICSLAYOUTSTYLEINFO_P_H 41 42 // 43 // W A R N I N G 44 // ------------- 45 // 46 // This file is not part of the Qt API. It exists purely as an 47 // implementation detail. This header file may change from version to 48 // version without notice, or even be removed. 49 // 50 // We mean it. 51 // 52 53 #include <QtWidgets/private/qtwidgetsglobal_p.h> 54 #include <QtGui/private/qabstractlayoutstyleinfo_p.h> 55 #include <QtWidgets/qstyleoption.h> 56 57 #include <memory> 58 59 QT_REQUIRE_CONFIG(graphicsview); 60 61 QT_BEGIN_NAMESPACE 62 63 class QStyle; 64 class QWidget; 65 class QGraphicsLayoutPrivate; 66 67 class QGraphicsLayoutStyleInfo : public QAbstractLayoutStyleInfo 68 { 69 public: 70 QGraphicsLayoutStyleInfo(const QGraphicsLayoutPrivate *layout); 71 ~QGraphicsLayoutStyleInfo(); 72 73 virtual qreal combinedLayoutSpacing(QLayoutPolicy::ControlTypes controls1, 74 QLayoutPolicy::ControlTypes controls2, 75 Qt::Orientation orientation) const override; 76 77 virtual qreal perItemSpacing(QLayoutPolicy::ControlType control1, 78 QLayoutPolicy::ControlType control2, 79 Qt::Orientation orientation) const override; 80 81 virtual qreal spacing(Qt::Orientation orientation) const override; 82 83 virtual qreal windowMargin(Qt::Orientation orientation) const override; 84 invalidate()85 virtual void invalidate() override 86 { 87 m_style = nullptr; 88 QAbstractLayoutStyleInfo::invalidate(); 89 } 90 91 QWidget *widget() const; 92 QStyle *style() const; 93 94 private: 95 const QGraphicsLayoutPrivate *m_layout; 96 mutable QStyle *m_style; 97 QStyleOption m_styleOption; 98 std::unique_ptr<QWidget> m_widget; 99 }; 100 101 QT_END_NAMESPACE 102 103 #endif // QGRAPHICSLAYOUTSTYLEINFO_P_H 104