include/QtWidgets/qboxlayout.h

0001 // Copyright (C) 2016 The Qt Company Ltd.
0002 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
0003
0004 #ifndef QBOXLAYOUT_H
0005 #define QBOXLAYOUT_H
0006
0007 #include <QtWidgets/qtwidgetsglobal.h>
0008 #include <QtWidgets/qlayout.h>
0009 #ifdef QT_INCLUDE_COMPAT
0010 #include <QtWidgets/qwidget.h>
0011 #endif
0012
0013 #include <limits.h>
0014
0015 QT_BEGIN_NAMESPACE
0016
0017
0018 class QBoxLayoutPrivate;
0019
0020 class Q_WIDGETS_EXPORT QBoxLayout : public QLayout
0021 {
0022     Q_OBJECT
0023     Q_DECLARE_PRIVATE(QBoxLayout)
0024 public:
0025     enum Direction { LeftToRight, RightToLeft, TopToBottom, BottomToTop,
0026                      Down = TopToBottom, Up = BottomToTop };
0027
0028     explicit QBoxLayout(Direction, QWidget *parent = nullptr);
0029
0030     ~QBoxLayout();
0031
0032     Direction direction() const;
0033     void setDirection(Direction);
0034
0035     void addSpacing(int size);
0036     void addStretch(int stretch = 0);
0037     void addSpacerItem(QSpacerItem *spacerItem);
0038     void addWidget(QWidget *, int stretch = 0, Qt::Alignment alignment = Qt::Alignment());
0039     void addLayout(QLayout *layout, int stretch = 0);
0040     void addStrut(int);
0041     void addItem(QLayoutItem *) override;
0042
0043     void insertSpacing(int index, int size);
0044     void insertStretch(int index, int stretch = 0);
0045     void insertSpacerItem(int index, QSpacerItem *spacerItem);
0046     void insertWidget(int index, QWidget *widget, int stretch = 0, Qt::Alignment alignment = Qt::Alignment());
0047     void insertLayout(int index, QLayout *layout, int stretch = 0);
0048     void insertItem(int index, QLayoutItem *);
0049
0050     int spacing() const override;
0051     void setSpacing(int spacing) override;
0052
0053     bool setStretchFactor(QWidget *w, int stretch);
0054     bool setStretchFactor(QLayout *l, int stretch);
0055     void setStretch(int index, int stretch);
0056     int stretch(int index) const;
0057
0058     QSize sizeHint() const override;
0059     QSize minimumSize() const override;
0060     QSize maximumSize() const override;
0061
0062     bool hasHeightForWidth() const override;
0063     int heightForWidth(int) const override;
0064     int minimumHeightForWidth(int) const override;
0065
0066     Qt::Orientations expandingDirections() const override;
0067     void invalidate() override;
0068     QLayoutItem *itemAt(int) const override;
0069     QLayoutItem *takeAt(int) override;
0070     int count() const override;
0071     void setGeometry(const QRect&) override;
0072
0073 private:
0074     Q_DISABLE_COPY(QBoxLayout)
0075 };
0076
0077 class Q_WIDGETS_EXPORT QHBoxLayout : public QBoxLayout
0078 {
0079     Q_OBJECT
0080 public:
0081     QHBoxLayout();
0082     explicit QHBoxLayout(QWidget *parent);
0083     ~QHBoxLayout();
0084
0085
0086 private:
0087     Q_DISABLE_COPY(QHBoxLayout)
0088 };
0089
0090 class Q_WIDGETS_EXPORT QVBoxLayout : public QBoxLayout
0091 {
0092     Q_OBJECT
0093 public:
0094     QVBoxLayout();
0095     explicit QVBoxLayout(QWidget *parent);
0096     ~QVBoxLayout();
0097
0098
0099 private:
0100     Q_DISABLE_COPY(QVBoxLayout)
0101 };
0102
0103 QT_END_NAMESPACE
0104
0105 #endif // QBOXLAYOUT_H