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 40 #ifndef QGRAPHICSLAYOUTITEM_P_H 41 #define QGRAPHICSLAYOUTITEM_P_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists for the convenience 48 // of other Qt classes. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 54 #include <QtWidgets/private/qtwidgetsglobal_p.h> 55 #include <QtCore/QSizeF> 56 #include <QtWidgets/QSizePolicy> 57 58 QT_REQUIRE_CONFIG(graphicsview); 59 60 QT_BEGIN_NAMESPACE 61 62 class QGraphicsLayoutItem; 63 class Q_AUTOTEST_EXPORT QGraphicsLayoutItemPrivate 64 { 65 Q_DECLARE_PUBLIC(QGraphicsLayoutItem) 66 public: 67 virtual ~QGraphicsLayoutItemPrivate(); 68 QGraphicsLayoutItemPrivate(QGraphicsLayoutItem *parent, bool isLayout); get(QGraphicsLayoutItem * q)69 static QGraphicsLayoutItemPrivate *get(QGraphicsLayoutItem *q) { return q->d_func();} get(const QGraphicsLayoutItem * q)70 static const QGraphicsLayoutItemPrivate *get(const QGraphicsLayoutItem *q) { return q->d_func();} 71 72 void init(); 73 QSizeF *effectiveSizeHints(const QSizeF &constraint) const; 74 QGraphicsItem *parentItem() const; 75 void ensureUserSizeHints(); 76 void setSize(Qt::SizeHint which, const QSizeF &size); 77 enum SizeComponent { Width, Height }; 78 void setSizeComponent(Qt::SizeHint which, SizeComponent component, qreal value); 79 80 bool hasHeightForWidth() const; 81 bool hasWidthForHeight() const; 82 83 QSizePolicy sizePolicy; 84 QGraphicsLayoutItem *parent; 85 86 QSizeF *userSizeHints; 87 mutable QSizeF cachedSizeHints[Qt::NSizeHints]; 88 mutable QSizeF cachedConstraint; 89 mutable QSizeF cachedSizeHintsWithConstraints[Qt::NSizeHints]; 90 91 mutable quint32 sizeHintCacheDirty : 1; 92 mutable quint32 sizeHintWithConstraintCacheDirty : 1; 93 quint32 isLayout : 1; 94 quint32 ownedByLayout : 1; 95 96 QGraphicsLayoutItem *q_ptr; 97 QRectF geom; 98 QGraphicsItem *graphicsItem; 99 }; 100 101 QT_END_NAMESPACE 102 103 #endif //QGRAPHICSLAYOUTITEM_P_H 104 105