Qt源代码研究-------QMainWindow
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QMainwindow.h
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDYNAMICMAINWINDOW_H
#define QDYNAMICMAINWINDOW_H
#include <QtGui/qwidget.h>
#include <QtGui/qtabwidget.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
#ifndef QT_NO_MAINWINDOW
class QDockWidget;
class QMainWindowPrivate;
class QMenuBar;
class QStatusBar;
class QToolBar;
class QMenu;
class Q_GUI_EXPORT QMainWindow : public QWidget
{
Q_OBJECT
Q_ENUMS(DockOption)
Q_FLAGS(DockOptions)
Q_PROPERTY(QSize iconSize READ iconSize WRITE setIconSize)
Q_PROPERTY(Qt::ToolButtonStyle toolButtonStyle READ toolButtonStyle WRITE setToolButtonStyle)
#ifndef QT_NO_DOCKWIDGET
Q_PROPERTY(bool animated READ isAnimated WRITE setAnimated)
#ifndef QT_NO_TABBAR
Q_PROPERTY(bool documentMode READ documentMode WRITE setDocumentMode)
#endif // QT_NO_TABBAR
#ifndef QT_NO_TABWIDGET
Q_PROPERTY(QTabWidget::TabShape tabShape READ tabShape WRITE setTabShape)
#endif // QT_NO_TABWIDGET
Q_PROPERTY(bool dockNestingEnabled READ isDockNestingEnabled WRITE setDockNestingEnabled)
#endif // QT_NO_DOCKWIDGET
Q_PROPERTY(DockOptions dockOptions READ dockOptions WRITE setDockOptions)
#ifndef QT_NO_TOOLBAR
Q_PROPERTY(bool unifiedTitleAndToolBarOnMac READ unifiedTitleAndToolBarOnMac WRITE setUnifiedTitleAndToolBarOnMac)
#endif
public:
enum DockOption {
AnimatedDocks = 0x01,
AllowNestedDocks = 0x02,
AllowTabbedDocks = 0x04,
ForceTabbedDocks = 0x08, // implies AllowTabbedDocks, !AllowNestedDocks
VerticalTabs = 0x10 // implies AllowTabbedDocks
};
Q_DECLARE_FLAGS(DockOptions, DockOption)
explicit QMainWindow(QWidget *parent = 0, Qt::WindowFlags flags = 0);
~QMainWindow();
QSize iconSize() const;
void setIconSize(const QSize &iconSize);
Qt::ToolButtonStyle toolButtonStyle() const;
void setToolButtonStyle(Qt::ToolButtonStyle toolButtonStyle);
#ifndef QT_NO_DOCKWIDGET
bool isAnimated() const;
bool isDockNestingEnabled() const;
#endif
#ifndef QT_NO_TABBAR
bool documentMode() const;
void setDocumentMode(bool enabled);
#endif
#ifndef QT_NO_TABWIDGET
QTabWidget::TabShape tabShape() const;
void setTabShape(QTabWidget::TabShape tabShape);
QTabWidget::TabPosition tabPosition(Qt::DockWidgetArea area) const;
void setTabPosition(Qt::DockWidgetAreas areas, QTabWidget::TabPosition tabPosition);
#endif // QT_NO_TABWIDGET
void setDockOptions(DockOptions options);
DockOptions dockOptions() const;
bool isSeparator(const QPoint &pos) const;
#ifndef QT_NO_MENUBAR
QMenuBar *menuBar() const;
void setMenuBar(QMenuBar *menubar);
QWidget *menuWidget() const;
void setMenuWidget(QWidget *menubar);
#endif
#ifndef QT_NO_STATUSBAR
QStatusBar *statusBar() const;
void setStatusBar(QStatusBar *statusbar);
#endif
QWidget *centralWidget() const;
void setCentralWidget(QWidget *widget);
#ifndef QT_NO_DOCKWIDGET
void setCorner(Qt::Corner corner, Qt::DockWidgetArea area);
Qt::DockWidgetArea corner(Qt::Corner corner) const;
#endif
#ifndef QT_NO_TOOLBAR
void addToolBarBreak(Qt::ToolBarArea area = Qt::TopToolBarArea);
void insertToolBarBreak(QToolBar *before);
void addToolBar(Qt::ToolBarArea area, QToolBar *toolbar);
void addToolBar(QToolBar *toolbar);
QToolBar *addToolBar(const QString &title);
void insertToolBar(QToolBar *before, QToolBar *toolbar);
void removeToolBar(QToolBar *toolbar);
void removeToolBarBreak(QToolBar *before);
void setUnifiedTitleAndToolBarOnMac(bool set);
bool unifiedTitleAndToolBarOnMac() const;
Qt::ToolBarArea toolBarArea(QToolBar *toolbar) const;
bool toolBarBreak(QToolBar *toolbar) const;
#endif
#ifndef QT_NO_DOCKWIDGET
void addDockWidget(Qt::DockWidgetArea area, QDockWidget *dockwidget);
void addDockWidget(Qt::DockWidgetArea area, QDockWidget *dockwidget,
Qt::Orientation orientation);
void splitDockWidget(QDockWidget *after, QDockWidget *dockwidget,
Qt::Orientation orientation);
void tabifyDockWidget(QDockWidget *first, QDockWidget *second);
QList<QDockWidget*> tabifiedDockWidgets(QDockWidget *dockwidget) const;
void removeDockWidget(QDockWidget *dockwidget);
bool restoreDockWidget(QDockWidget *dockwidget);
Qt::DockWidgetArea dockWidgetArea(QDockWidget *dockwidget) const;
#endif // QT_NO_DOCKWIDGET
QByteArray saveState(int version = 0) const;
bool restoreState(const QByteArray &state, int version = 0);
#ifndef QT_NO_MENU
virtual QMenu *createPopupMenu();
#endif
#ifdef QT3_SUPPORT
QT3_SUPPORT_CONSTRUCTOR QMainWindow(QWidget *parent, const char *name, Qt::WindowFlags flags = 0);
#endif
#ifndef QT_NO_DOCKWIDGET
public Q_SLOTS:
void setAnimated(bool enabled);
void setDockNestingEnabled(bool enabled);
#endif
Q_SIGNALS:
void iconSizeChanged(const QSize &iconSize);
void toolButtonStyleChanged(Qt::ToolButtonStyle toolButtonStyle);
protected:
#ifndef QT_NO_CONTEXTMENU
void contextMenuEvent(QContextMenuEvent *event);
#endif
bool event(QEvent *event);
private:
Q_DECLARE_PRIVATE(QMainWindow)
Q_DISABLE_COPY(QMainWindow)
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QMainWindow::DockOptions)
#endif // QT_NO_MAINWINDOW
QT_END_NAMESPACE
QT_END_HEADER
#endif // QDYNAMICMAINWINDOW_H
QMainwidow.cpp
/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
//#define QT_EXPERIMENTAL_CLIENT_DECORATIONS
#include "qmainwindow.h"
#include "qmainwindowlayout_p.h"
#ifndef QT_NO_MAINWINDOW
#include "qdockwidget.h"
#include "qtoolbar.h"
#include <qapplication.h>
#include <qmenubar.h>
#include <qstatusbar.h>
#include <qevent.h>
#include <qstyle.h>
#include <qdebug.h>
#include <qpainter.h>
#include <private/qwidget_p.h>
#include "qtoolbar_p.h"
#include "qwidgetanimator_p.h"
#ifdef Q_WS_MAC
#include <private/qt_mac_p.h>
#include <private/qt_cocoa_helpers_mac_p.h>
QT_BEGIN_NAMESPACE
extern OSWindowRef qt_mac_window_for(const QWidget *); // qwidget_mac.cpp
QT_END_NAMESPACE
#endif
QT_BEGIN_NAMESPACE
class QMainWindowPrivate : public QWidgetPrivate
{
Q_DECLARE_PUBLIC(QMainWindow)
public:
inline QMainWindowPrivate()
: layout(0), explicitIconSize(false), toolButtonStyle(Qt::ToolButtonIconOnly)
#ifdef Q_WS_MAC
, useHIToolBar(false)
, activateUnifiedToolbarAfterFullScreen(false)
#endif
#if !defined(QT_NO_DOCKWIDGET) && !defined(QT_NO_CURSOR)
, hasOldCursor(false) , cursorAdjusted(false)
#endif
{ }
QMainWindowLayout *layout;
QSize iconSize;
bool explicitIconSize;
Qt::ToolButtonStyle toolButtonStyle;
#ifdef Q_WS_MAC
bool useHIToolBar;
bool activateUnifiedToolbarAfterFullScreen;
#endif
void init();
QList<int> hoverSeparator;
QPoint hoverPos;
#if !defined(QT_NO_DOCKWIDGET) && !defined(QT_NO_CURSOR)
QCursor separatorCursor(const QList<int> &path) const;
void adjustCursor(const QPoint &pos);
QCursor oldCursor;
uint hasOldCursor : 1;
uint cursorAdjusted : 1;
#endif
static inline QMainWindowLayout *mainWindowLayout(const QMainWindow *mainWindow)
{
return mainWindow ? mainWindow->d_func()->layout : static_cast<QMainWindowLayout *>(0);
}
};
QMainWindowLayout *qt_mainwindow_layout(const QMainWindow *mainWindow)
{
return QMainWindowPrivate::mainWindowLayout(mainWindow);
}
#ifdef QT_EXPERIMENTAL_CLIENT_DECORATIONS
Q_GUI_EXPORT void qt_setMainWindowTitleWidget(QMainWindow *mainWindow, Qt::DockWidgetArea area, QWidget *widget)
{
QGridLayout *topLayout = qobject_cast<QGridLayout *>(mainWindow->layout());
Q_ASSERT(topLayout);
int row = 0;
int column = 0;
switch (area) {
case Qt::LeftDockWidgetArea:
row = 1;
column = 0;
break;
case Qt::TopDockWidgetArea:
row = 0;
column = 1;
break;
case Qt::BottomDockWidgetArea:
row = 2;
column = 1;
break;
case Qt::RightDockWidgetArea:
row = 1;
column = 2;
break;
default:
Q_ASSERT_X(false, "qt_setMainWindowTitleWidget", "Unknown area");
return;
}
if (QLayoutItem *oldItem = topLayout->itemAtPosition(row, column))
delete oldItem->widget();
topLayout->addWidget(widget, row, column);
}
#endif
void QMainWindowPrivate::init()
{
Q_Q(QMainWindow);
#ifdef QT_EXPERIMENTAL_CLIENT_DECORATIONS
QGridLayout *topLayout = new QGridLayout(q);
topLayout->setContentsMargins(0, 0, 0, 0);
layout = new QMainWindowLayout(q, topLayout);
topLayout->addItem(layout, 1, 1);
#else
layout = new QMainWindowLayout(q, 0);
#endif
const int metric = q->style()->pixelMetric(QStyle::PM_ToolBarIconSize, 0, q);
iconSize = QSize(metric, metric);
q->setAttribute(Qt::WA_Hover);
}
/*
The Main Window:
+----------------------------------------------------------+
| Menu Bar |
+----------------------------------------------------------+
| Tool Bar Area |
| +--------------------------------------------------+ |
| | Dock Window Area | |
| | +------------------------------------------+ | |
| | | | | |
| | | Central Widget | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | +------------------------------------------+ | |
| | | |
| +--------------------------------------------------+ |
| |
+----------------------------------------------------------+
| Status Bar |
+----------------------------------------------------------+
*/
/*!
\class QMainWindow
\brief The QMainWindow class provides a main application
window.
\ingroup mainwindow-classes
\tableofcontents
\section1 Qt Main Window Framework
A main window provides a framework for building an
application's user interface. Qt has QMainWindow and its \l{Main
Window and Related Classes}{related classes} for main window
management. QMainWindow has its own layout to which you can add
\l{QToolBar}s, \l{QDockWidget}s, a
QMenuBar, and a QStatusBar. The layout has a center area that can
be occupied by any kind of widget. You can see an image of the
layout below.
\image mainwindowlayout.png
\note Creating a main window without a central widget is not supported.
You must have a central widget even if it is just a placeholder.
\section1 Creating Main Window Components
A central widget will typically be a standard Qt widget such
as a QTextEdit or a QGraphicsView. Custom widgets can also be
used for advanced applications. You set the central widget with \c
setCentralWidget().
Main windows have either a single (SDI) or multiple (MDI)
document interface. You create MDI applications in Qt by using a
QMdiArea as the central widget.
We will now examine each of the other widgets that can be
added to a main window. We give examples on how to create and add
them.
\section2 Creating Menus
Qt implements menus in QMenu and QMainWindow keeps them in a
QMenuBar. \l{QAction}{QAction}s are added to the menus, which
display them as menu items.
You can add new menus to the main window's menu bar by calling
\c menuBar(), which returns the QMenuBar for the window, and then
add a menu with QMenuBar::addMenu().
QMainWindow comes with a default menu bar, but you can also
set one yourself with \c setMenuBar(). If you wish to implement a
custom menu bar (i.e., not use the QMenuBar widget), you can set it
with \c setMenuWidget().
An example of how to create menus follows:
\snippet examples/mainwindows/application/mainwindow.cpp 26
The \c createPopupMenu() function creates popup menus when the
main window receives context menu events. The default
implementation generates a menu with the checkable actions from
the dock widgets and toolbars. You can reimplement \c
createPopupMenu() for a custom menu.
\section2 Creating Toolbars
Toolbars are implemented in the QToolBar class. You add a
toolbar to a main window with \c addToolBar().
You control the initial position of toolbars by assigning them
to a specific Qt::ToolBarArea. You can split an area by inserting
a toolbar break - think of this as a line break in text editing -
with \c addToolBarBreak() or \c insertToolBarBreak(). You can also
restrict placement by the user with QToolBar::setAllowedAreas()
and QToolBar::setMovable().
The size of toolbar icons can be retrieved with \c iconSize().
The sizes are platform dependent; you can set a fixed size with \c
setIconSize(). You can alter the appearance of all tool buttons in
the toolbars with \c setToolButtonStyle().
An example of toolbar creation follows:
\snippet examples/mainwindows/application/mainwindow.cpp 29
\section2 Creating Dock Widgets
Dock widgets are implemented in the QDockWidget class. A dock
widget is a window that can be docked into the main window. You
add dock widgets to a main window with \c addDockWidget().
There are four dock widget areas as given by the
Qt::DockWidgetArea enum: left, right, top, and bottom. You can
specify which dock widget area that should occupy the corners
where the areas overlap with \c setCorner(). By default
each area can only contain one row (vertical or horizontal) of
dock widgets, but if you enable nesting with \c
setDockNestingEnabled(), dock widgets can be added in either
direction.
Two dock widgets may also be stacked on top of each other. A
QTabBar is then used to select which of the widgets that should be
displayed.
We give an example of how to create and add dock widgets to a
main window:
\snippet doc/src/snippets/mainwindowsnippet.cpp 0
\section2 The Status Bar
You can set a status bar with \c setStatusBar(), but one is
created the first time \c statusBar() (which returns the main
window's status bar) is called. See QStatusBar for information on
how to use it.
\section1 Storing State
QMainWindow can store the state of its layout with \c
saveState(); it can later be retrieved with \c restoreState(). It
is the position and size (relative to the size of the main window)
of the toolbars and dock widgets that are stored.
\sa QMenuBar, QToolBar, QStatusBar, QDockWidget, {Application
Example}, {Dock Widgets Example}, {MDI Example}, {SDI Example},
{Menus Example}
*/
/*!
\fn void QMainWindow::iconSizeChanged(const QSize &iconSize)
This signal is emitted when the size of the icons used in the
window is changed. The new icon size is passed in \a iconSize.
You can connect this signal to other components to help maintain
a consistent appearance for your application.
\sa setIconSize()
*/
/*!
\fn void QMainWindow::toolButtonStyleChanged(Qt::ToolButtonStyle toolButtonStyle)
This signal is emitted when the style used for tool buttons in the
window is changed. The new style is passed in \a toolButtonStyle.
You can connect this signal to other components to help maintain
a consistent appearance for your application.
\sa setToolButtonStyle()
*/
/*!
Constructs a QMainWindow with the given \a parent and the specified
widget \a flags.
QMainWindow sets the Qt::Window flag itself, and will hence
always be created as a top-level widget.
*/
QMainWindow::QMainWindow(QWidget *parent, Qt::WindowFlags flags)
: QWidget(*(new QMainWindowPrivate()), parent, flags | Qt::Window)
{
d_func()->init();
}
#ifdef QT3_SUPPORT
/*!
\obsolete
Constructs a QMainWindow with the given \a parent, \a name, and
with the specified widget \a flags.
*/
QMainWindow::QMainWindow(QWidget *parent, const char *name, Qt::WindowFlags flags)
: QWidget(*(new QMainWindowPrivate()), parent, flags | Qt::WType_TopLevel)
{
setObjectName(QString::fromAscii(name));
d_func()->init();
}
#endif
/*!
Destroys the main window.
*/
QMainWindow::~QMainWindow()
{ }
/*! \property QMainWindow::iconSize
\brief size of toolbar icons in this mainwindow.
The default is the default tool bar icon size of the GUI style.
Note that the icons used must be at least of this size as the
icons are only scaled down.
*/
/*!
\property QMainWindow::dockOptions
\brief the docking behavior of QMainWindow
\since 4.3
The default value is AnimatedDocks | AllowTabbedDocks.
*/
/*!
\enum QMainWindow::DockOption
\since 4.3
This enum contains flags that specify the docking behavior of QMainWindow.
\value AnimatedDocks Identical to the \l animated property.
\value AllowNestedDocks Identical to the \l dockNestingEnabled property.
\value AllowTabbedDocks The user can drop one dock widget "on top" of
another. The two widgets are stacked and a tab
bar appears for selecting which one is visible.
\value ForceTabbedDocks Each dock area contains a single stack of tabbed
dock widgets. In other words, dock widgets cannot
be placed next to each other in a dock area. If
this option is set, AllowNestedDocks has no effect.
\value VerticalTabs The two vertical dock areas on the sides of the
main window show their tabs vertically. If this
option is not set, all dock areas show their tabs
at the bottom. Implies AllowTabbedDocks. See also
\l setTabPosition().
These options only control how dock widgets may be dropped in a QMainWindow.
They do not re-arrange the dock widgets to conform with the specified
options. For this reason they should be set before any dock widgets
are added to the main window. Exceptions to this are the AnimatedDocks and
VerticalTabs options, which may be set at any time.
*/
void QMainWindow::setDockOptions(DockOptions opt)
{
Q_D(QMainWindow);
d->layout->setDockOptions(opt);
}
QMainWindow::DockOptions QMainWindow::dockOptions() const
{
Q_D(const QMainWindow);
return d->layout->dockOptions;
}
QSize QMainWindow::iconSize() const
{ return d_func()->iconSize; }
void QMainWindow::setIconSize(const QSize &iconSize)
{
Q_D(QMainWindow);
QSize sz = iconSize;
if (!sz.isValid()) {
const int metric = style()->pixelMetric(QStyle::PM_ToolBarIconSize, 0, this);
sz = QSize(metric, metric);
}
if (d->iconSize != sz) {
d->iconSize = sz;
emit iconSizeChanged(d->iconSize);
}
d->explicitIconSize = iconSize.isValid();
}
/*! \property QMainWindow::toolButtonStyle
\brief style of toolbar buttons in this mainwindow.
The default is Qt::ToolButtonIconOnly.
*/
Qt::ToolButtonStyle QMainWindow::toolButtonStyle() const
{ return d_func()->toolButtonStyle; }
void QMainWindow::setToolButtonStyle(Qt::ToolButtonStyle toolButtonStyle)
{
Q_D(QMainWindow);
if (d->toolButtonStyle == toolButtonStyle)
return;
d->toolButtonStyle = toolButtonStyle;
emit toolButtonStyleChanged(d->toolButtonStyle);
}
#ifndef QT_NO_MENUBAR
/*!
Returns the menu bar for the main window. This function creates
and returns an empty menu bar if the menu bar does not exist.
If you want all windows in a Mac application to share one menu
bar, don't use this function to create it, because the menu bar
created here will have this QMainWindow as its parent. Instead,
you must create a menu bar that does not have a parent, which you
can then share among all the Mac windows. Create a parent-less
menu bar this way:
\snippet doc/src/snippets/code/src_gui_widgets_qmenubar.cpp 1
\sa setMenuBar()
*/
QMenuBar *QMainWindow::menuBar() const
{
QMenuBar *menuBar = qobject_cast<QMenuBar *>(layout()->menuBar());
if (!menuBar) {
QMainWindow *self = const_cast<QMainWindow *>(this);
menuBar = new QMenuBar(self);
self->setMenuBar(menuBar);
}
return menuBar;
}
/*!
Sets the menu bar for the main window to \a menuBar.
Note: QMainWindow takes ownership of the \a menuBar pointer and
deletes it at the appropriate time.
\sa menuBar()
*/
void QMainWindow::setMenuBar(QMenuBar *menuBar)
{
QLayout *topLayout = layout();
if (topLayout->menuBar() && topLayout->menuBar() != menuBar) {
// Reparent corner widgets before we delete the old menu bar.
QMenuBar *oldMenuBar = qobject_cast<QMenuBar *>(topLayout->menuBar());
if (menuBar) {
// TopLeftCorner widget.
QWidget *cornerWidget = oldMenuBar->cornerWidget(Qt::TopLeftCorner);
if (cornerWidget)
menuBar->setCornerWidget(cornerWidget, Qt::TopLeftCorner);
// TopRightCorner widget.
cornerWidget = oldMenuBar->cornerWidget(Qt::TopRightCorner);
if (cornerWidget)
menuBar->setCornerWidget(cornerWidget, Qt::TopRightCorner);
}
oldMenuBar->hide();
oldMenuBar->deleteLater();
}
topLayout->setMenuBar(menuBar);
}
/*!
\since 4.2
Returns the menu bar for the main window. This function returns
null if a menu bar hasn't been constructed yet.
*/
QWidget *QMainWindow::menuWidget() const
{
QWidget *menuBar = d_func()->layout->menuBar();
return menuBar;
}
/*!
\since 4.2
Sets the menu bar for the main window to \a menuBar.
QMainWindow takes ownership of the \a menuBar pointer and
deletes it at the appropriate time.
*/
void QMainWindow::setMenuWidget(QWidget *menuBar)
{
Q_D(QMainWindow);
if (d->layout->menuBar() && d->layout->menuBar() != menuBar) {
d->layout->menuBar()->hide();
d->layout->menuBar()->deleteLater();
}
d->layout->setMenuBar(menuBar);
}
#endif // QT_NO_MENUBAR
#ifndef QT_NO_STATUSBAR
/*!
Returns the status bar for the main window. This function creates
and returns an empty status bar if the status bar does not exist.
\sa setStatusBar()
*/
QStatusBar *QMainWindow::statusBar() const
{
QStatusBar *statusbar = d_func()->layout->statusBar();
if (!statusbar) {
QMainWindow *self = const_cast<QMainWindow *>(this);
statusbar = new QStatusBar(self);
statusbar->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Fixed);
self->setStatusBar(statusbar);
}
return statusbar;
}
/*!
Sets the status bar for the main window to \a statusbar.
Setting the status bar to 0 will remove it from the main window.
Note that QMainWindow takes ownership of the \a statusbar pointer
and deletes it at the appropriate time.
\sa statusBar()
*/
void QMainWindow::setStatusBar(QStatusBar *statusbar)
{
Q_D(QMainWindow);
if (d->layout->statusBar() && d->layout->statusBar() != statusbar) {
d->layout->statusBar()->hide();
d->layout->statusBar()->deleteLater();
}
d->layout->setStatusBar(statusbar);
}
#endif // QT_NO_STATUSBAR
/*!
Returns the central widget for the main window. This function
returns zero if the central widget has not been set.
\sa setCentralWidget()
*/
QWidget *QMainWindow::centralWidget() const
{ return d_func()->layout->centralWidget(); }
/*!
Sets the given \a widget to be the main window's central widget.
Note: QMainWindow takes ownership of the \a widget pointer and
deletes it at the appropriate time.
\sa centralWidget()
*/
void QMainWindow::setCentralWidget(QWidget *widget)
{
Q_D(QMainWindow);
if (d->layout->centralWidget() && d->layout->centralWidget() != widget) {
d->layout->centralWidget()->hide();
d->layout->centralWidget()->deleteLater();
}
d->layout->setCentralWidget(widget);
}
#ifndef QT_NO_DOCKWIDGET
/*!
Sets the given dock widget \a area to occupy the specified \a
corner.
\sa corner()
*/
void QMainWindow::setCorner(Qt::Corner corner, Qt::DockWidgetArea area)
{
bool valid = false;
switch (corner) {
case Qt::TopLeftCorner:
valid = (area == Qt::TopDockWidgetArea || area == Qt::LeftDockWidgetArea);
break;
case Qt::TopRightCorner:
valid = (area == Qt::TopDockWidgetArea || area == Qt::RightDockWidgetArea);
break;
case Qt::BottomLeftCorner:
valid = (area == Qt::BottomDockWidgetArea || area == Qt::LeftDockWidgetArea);
break;
case Qt::BottomRightCorner:
valid = (area == Qt::BottomDockWidgetArea || area == Qt::RightDockWidgetArea);
break;
}
if (!valid)
qWarning("QMainWindow::setCorner(): 'area' is not valid for 'corner'");
else
d_func()->layout->setCorner(corner, area);
}
/*!
Returns the dock widget area that occupies the specified \a
corner.
\sa setCorner()
*/
Qt::DockWidgetArea QMainWindow::corner(Qt::Corner corner) const
{ return d_func()->layout->corner(corner); }
#endif
#ifndef QT_NO_TOOLBAR
static bool checkToolBarArea(Qt::ToolBarArea area, const char *where)
{
switch (area) {
case Qt::LeftToolBarArea:
case Qt::RightToolBarArea:
case Qt::TopToolBarArea:
case Qt::BottomToolBarArea:
return true;
default:
break;
}
qWarning("%s: invalid 'area' argument", where);
return false;
}
/*!
Adds a toolbar break to the given \a area after all the other
objects that are present.
*/
void QMainWindow::addToolBarBreak(Qt::ToolBarArea area)
{
if (!checkToolBarArea(area, "QMainWindow::addToolBarBreak"))
return;
d_func()->layout->addToolBarBreak(area);
}
/*!
Inserts a toolbar break before the toolbar specified by \a before.
*/
void QMainWindow::insertToolBarBreak(QToolBar *before)
{ d_func()->layout->insertToolBarBreak(before); }
/*!
Removes a toolbar break previously inserted before the toolbar specified by \a before.
*/
void QMainWindow::removeToolBarBreak(QToolBar *before)
{
Q_D(QMainWindow);
d->layout->removeToolBarBreak(before);
}
/*!
Adds the \a toolbar into the specified \a area in this main
window. The \a toolbar is placed at the end of the current tool
bar block (i.e. line). If the main window already manages \a toolbar
then it will only move the toolbar to \a area.
\sa insertToolBar() addToolBarBreak() insertToolBarBreak()
*/
void QMainWindow::addToolBar(Qt::ToolBarArea area, QToolBar *toolbar)
{
if (!checkToolBarArea(area, "QMainWindow::addToolBar"))
return;
Q_D(QMainWindow);
disconnect(this, SIGNAL(iconSizeChanged(QSize)),
toolbar, SLOT(_q_updateIconSize(QSize)));
disconnect(this, SIGNAL(toolButtonStyleChanged(Qt::ToolButtonStyle)),
toolbar, SLOT(_q_updateToolButtonStyle(Qt::ToolButtonStyle)));
if(toolbar->d_func()->state && toolbar->d_func()->state->dragging) {
//removing a toolbar which is dragging will cause crash
#ifndef QT_NO_DOCKWIDGET
bool animated = isAnimated();
setAnimated(false);
#endif
toolbar->d_func()->endDrag();
#ifndef QT_NO_DOCKWIDGET
setAnimated(animated);
#endif
}
if (!d->layout->usesHIToolBar(toolbar)) {
d->layout->removeWidget(toolbar);
} else {
d->layout->removeToolBar(toolbar);
}
toolbar->d_func()->_q_updateIconSize(d->iconSize);
toolbar->d_func()->_q_updateToolButtonStyle(d->toolButtonStyle);
connect(this, SIGNAL(iconSizeChanged(QSize)),
toolbar, SLOT(_q_updateIconSize(QSize)));
connect(this, SIGNAL(toolButtonStyleChanged(Qt::ToolButtonStyle)),
toolbar, SLOT(_q_updateToolButtonStyle(Qt::ToolButtonStyle)));
d->layout->addToolBar(area, toolbar);
}
/*! \overload
Equivalent of calling addToolBar(Qt::TopToolBarArea, \a toolbar)
*/
void QMainWindow::addToolBar(QToolBar *toolbar)
{ addToolBar(Qt::TopToolBarArea, toolbar); }
/*!
\overload
Creates a QToolBar object, setting its window title to \a title,
and inserts it into the top toolbar area.
\sa setWindowTitle()
*/
QToolBar *QMainWindow::addToolBar(const QString &title)
{
QToolBar *toolBar = new QToolBar(this);
toolBar->setWindowTitle(title);
addToolBar(toolBar);
return toolBar;
}
/*!
Inserts the \a toolbar into the area occupied by the \a before toolbar
so that it appears before it. For example, in normal left-to-right
layout operation, this means that \a toolbar will appear to the left
of the toolbar specified by \a before in a horizontal toolbar area.
\sa insertToolBarBreak() addToolBar() addToolBarBreak()
*/
void QMainWindow::insertToolBar(QToolBar *before, QToolBar *toolbar)
{
Q_D(QMainWindow);
d->layout->removeToolBar(toolbar);
toolbar->d_func()->_q_updateIconSize(d->iconSize);
toolbar->d_func()->_q_updateToolButtonStyle(d->toolButtonStyle);
connect(this, SIGNAL(iconSizeChanged(QSize)),
toolbar, SLOT(_q_updateIconSize(QSize)));
connect(this, SIGNAL(toolButtonStyleChanged(Qt::ToolButtonStyle)),
toolbar, SLOT(_q_updateToolButtonStyle(Qt::ToolButtonStyle)));
d->layout->insertToolBar(before, toolbar);
}
/*!
Removes the \a toolbar from the main window layout and hides
it. Note that the \a toolbar is \e not deleted.
*/
void QMainWindow::removeToolBar(QToolBar *toolbar)
{
if (toolbar) {
d_func()->layout->removeToolBar(toolbar);
toolbar->hide();
}
}
/*!
Returns the Qt::ToolBarArea for \a toolbar. If \a toolbar has not
been added to the main window, this function returns \c
Qt::NoToolBarArea.
\sa addToolBar() addToolBarBreak() Qt::ToolBarArea
*/
Qt::ToolBarArea QMainWindow::toolBarArea(QToolBar *toolbar) const
{ return d_func()->layout->toolBarArea(toolbar); }
/*!
Returns whether there is a toolbar
break before the \a toolbar.
\sa addToolBarBreak(), insertToolBarBreak()
*/
bool QMainWindow::toolBarBreak(QToolBar *toolbar) const
{
return d_func()->layout->toolBarBreak(toolbar);
}
#endif // QT_NO_TOOLBAR
#ifndef QT_NO_DOCKWIDGET
/*! \property QMainWindow::animated
\brief whether manipulating dock widgets and tool bars is animated
\since 4.2
When a dock widget or tool bar is dragged over the
main window, the main window adjusts its contents
to indicate where the dock widget or tool bar will
be docked if it is dropped. Setting this property
causes QMainWindow to move its contents in a smooth
animation. Clearing this property causes the contents
to snap into their new positions.
By default, this property is set. It may be cleared if
the main window contains widgets which are slow at resizing
or repainting themselves.
Setting this property is identical to setting the AnimatedDocks
option using setDockOptions().
*/
bool QMainWindow::isAnimated() const
{
Q_D(const QMainWindow);
return d->layout->dockOptions & AnimatedDocks;
}
void QMainWindow::setAnimated(bool enabled)
{
Q_D(QMainWindow);
DockOptions opts = d->layout->dockOptions;
if (enabled)
opts |= AnimatedDocks;
else
opts &= ~AnimatedDocks;
d->layout->setDockOptions(opts);
}
/*! \property QMainWindow::dockNestingEnabled
\brief whether docks can be nested
\since 4.2
If this property is false, dock areas can only contain a single row
(horizontal or vertical) of dock widgets. If this property is true,
the area occupied by a dock widget can be split in either direction to contain
more dock widgets.
Dock nesting is only necessary in applications that contain a lot of
dock widgets. It gives the user greater freedom in organizing their
main window. However, dock nesting leads to more complex
(and less intuitive) behavior when a dock widget is dragged over the
main window, since there are more ways in which a dropped dock widget
may be placed in the dock area.
Setting this property is identical to setting the AllowNestedDocks option
using setDockOptions().
*/
bool QMainWindow::isDockNestingEnabled() const
{
Q_D(const QMainWindow);
return d->layout->dockOptions & AllowNestedDocks;
}
void QMainWindow::setDockNestingEnabled(bool enabled)
{
Q_D(QMainWindow);
DockOptions opts = d->layout->dockOptions;
if (enabled)
opts |= AllowNestedDocks;
else
opts &= ~AllowNestedDocks;
d->layout->setDockOptions(opts);
}
#if 0
/*! \property QMainWindow::verticalTabsEnabled
\brief whether left and right dock areas use vertical tabs
\since 4.2
If this property is set to false, dock areas containing tabbed dock widgets
display horizontal tabs, simmilar to Visual Studio.
If this property is set to true, then the right and left dock areas display vertical
tabs, simmilar to KDevelop.
This property should be set before any dock widgets are added to the main window.
*/
bool QMainWindow::verticalTabsEnabled() const
{
return d_func()->layout->verticalTabsEnabled();
}
void QMainWindow::setVerticalTabsEnabled(bool enabled)
{
d_func()->layout->setVerticalTabsEnabled(enabled);
}
#endif
static bool checkDockWidgetArea(Qt::DockWidgetArea area, const char *where)
{
switch (area) {
case Qt::LeftDockWidgetArea:
case Qt::RightDockWidgetArea:
case Qt::TopDockWidgetArea:
case Qt::BottomDockWidgetArea:
return true;
default:
break;
}
qWarning("%s: invalid 'area' argument", where);
return false;
}
#ifndef QT_NO_TABBAR
/*!
\property QMainWindow::documentMode
\brief whether the tab bar for tabbed dockwidgets is set to document mode.
\since 4.5
The default is false.
\sa QTabBar::documentMode
*/
bool QMainWindow::documentMode() const
{
return d_func()->layout->documentMode();
}
void QMainWindow::setDocumentMode(bool enabled)
{
d_func()->layout->setDocumentMode(enabled);
}
#endif // QT_NO_TABBAR
#ifndef QT_NO_TABWIDGET
/*!
\property QMainWindow::tabShape
\brief the tab shape used for tabbed dock widgets.
\since 4.5
The default is \l QTabWidget::Rounded.
\sa setTabPosition()
*/
QTabWidget::TabShape QMainWindow::tabShape() const
{
return d_func()->layout->tabShape();
}
void QMainWindow::setTabShape(QTabWidget::TabShape tabShape)
{
d_func()->layout->setTabShape(tabShape);
}
/*!
\since 4.5
Returns the tab position for \a area.
\note The \l VerticalTabs dock option overrides the tab positions returned
by this function.
\sa setTabPosition(), tabShape()
*/
QTabWidget::TabPosition QMainWindow::tabPosition(Qt::DockWidgetArea area) const
{
if (!checkDockWidgetArea(area, "QMainWindow::tabPosition"))
return QTabWidget::South;
return d_func()->layout->tabPosition(area);
}
/*!
\since 4.5
Sets the tab position for the given dock widget \a areas to the specified
\a tabPosition. By default, all dock areas show their tabs at the bottom.
\note The \l VerticalTabs dock option overrides the tab positions set by
this method.
\sa tabPosition(), setTabShape()
*/
void QMainWindow::setTabPosition(Qt::DockWidgetAreas areas, QTabWidget::TabPosition tabPosition)
{
d_func()->layout->setTabPosition(areas, tabPosition);
}
#endif // QT_NO_TABWIDGET
/*!
Adds the given \a dockwidget to the specified \a area.
*/
void QMainWindow::addDockWidget(Qt::DockWidgetArea area, QDockWidget *dockwidget)
{
if (!checkDockWidgetArea(area, "QMainWindow::addDockWidget"))
return;
Qt::Orientation orientation = Qt::Vertical;
switch (area) {
case Qt::TopDockWidgetArea:
case Qt::BottomDockWidgetArea:
orientation = Qt::Horizontal;
break;
default:
break;
}
d_func()->layout->removeWidget(dockwidget); // in case it was already in here
addDockWidget(area, dockwidget, orientation);
#ifdef Q_WS_MAC //drawer support
QMacCocoaAutoReleasePool pool;
extern bool qt_mac_is_macdrawer(const QWidget *); //qwidget_mac.cpp
if (qt_mac_is_macdrawer(dockwidget)) {
extern bool qt_mac_set_drawer_preferred_edge(QWidget *, Qt::DockWidgetArea); //qwidget_mac.cpp
window()->createWinId();
dockwidget->window()->createWinId();
qt_mac_set_drawer_preferred_edge(dockwidget, area);
if (dockwidget->isVisible()) {
dockwidget->hide();
dockwidget->show();
}
}
#endif
}
/*!
Restores the state of \a dockwidget if it is created after the call
to restoreState(). Returns true if the state was restored; otherwise
returns false.
\sa restoreState(), saveState()
*/
bool QMainWindow::restoreDockWidget(QDockWidget *dockwidget)
{
return d_func()->layout->restoreDockWidget(dockwidget);
}
/*!
Adds \a dockwidget into the given \a area in the direction
specified by the \a orientation.
*/
void QMainWindow::addDockWidget(Qt::DockWidgetArea area, QDockWidget *dockwidget,
Qt::Orientation orientation)
{
if (!checkDockWidgetArea(area, "QMainWindow::addDockWidget"))
return;
// add a window to an area, placing done relative to the previous
d_func()->layout->addDockWidget(area, dockwidget, orientation);
}
/*!
\fn void QMainWindow::splitDockWidget(QDockWidget *first, QDockWidget *second, Qt::Orientation orientation)
Splits the space covered by the \a first dock widget into two parts,
moves the \a first dock widget into the first part, and moves the
\a second dock widget into the second part.
The \a orientation specifies how the space is divided: A Qt::Horizontal
split places the second dock widget to the right of the first; a
Qt::Vertical split places the second dock widget below the first.
\e Note: if \a first is currently in a tabbed docked area, \a second will
be added as a new tab, not as a neighbor of \a first. This is because a
single tab can contain only one dock widget.
\e Note: The Qt::LayoutDirection influences the order of the dock widgets
in the two parts of the divided area. When right-to-left layout direction
is enabled, the placing of the dock widgets will be reversed.
\sa tabifyDockWidget(), addDockWidget(), removeDockWidget()
*/
void QMainWindow::splitDockWidget(QDockWidget *after, QDockWidget *dockwidget,
Qt::Orientation orientation)
{
d_func()->layout->splitDockWidget(after, dockwidget, orientation);
}
/*!
\fn void QMainWindow::tabifyDockWidget(QDockWidget *first, QDockWidget *second)
Moves \a second dock widget on top of \a first dock widget, creating a tabbed
docked area in the main window.
\sa tabifiedDockWidgets()
*/
void QMainWindow::tabifyDockWidget(QDockWidget *first, QDockWidget *second)
{
d_func()->layout->tabifyDockWidget(first, second);
}
/*!
\fn QList<QDockWidget*> QMainWindow::tabifiedDockWidgets(QDockWidget *dockwidget) const
Returns the dock widgets that are tabified together with \a dockwidget.
\since 4.5
\sa tabifyDockWidget()
*/
QList<QDockWidget*> QMainWindow::tabifiedDockWidgets(QDockWidget *dockwidget) const
{
QList<QDockWidget*> ret;
#if defined(QT_NO_TABBAR)
Q_UNUSED(dockwidget);
#else
const QDockAreaLayoutInfo *info = d_func()->layout->layoutState.dockAreaLayout.info(dockwidget);
if (info && info->tabbed && info->tabBar) {
for(int i = 0; i < info->item_list.count(); ++i) {
const QDockAreaLayoutItem &item = info->item_list.at(i);
if (item.widgetItem) {
if (QDockWidget *dock = qobject_cast<QDockWidget*>(item.widgetItem->widget())) {
if (dock != dockwidget) {
ret += dock;
}
}
}
}
}
#endif
return ret;
}
/*!
Removes the \a dockwidget from the main window layout and hides
it. Note that the \a dockwidget is \e not deleted.
*/
void QMainWindow::removeDockWidget(QDockWidget *dockwidget)
{
if (dockwidget) {
d_func()->layout->removeWidget(dockwidget);
dockwidget->hide();
}
}
/*!
Returns the Qt::DockWidgetArea for \a dockwidget. If \a dockwidget
has not been added to the main window, this function returns \c
Qt::NoDockWidgetArea.
\sa addDockWidget() splitDockWidget() Qt::DockWidgetArea
*/
Qt::DockWidgetArea QMainWindow::dockWidgetArea(QDockWidget *dockwidget) const
{ return d_func()->layout->dockWidgetArea(dockwidget); }
#endif // QT_NO_DOCKWIDGET
/*!
Saves the current state of this mainwindow's toolbars and
dockwidgets. The \a version number is stored as part of the data.
The \link QObject::objectName objectName\endlink property is used
to identify each QToolBar and QDockWidget. You should make sure
that this property is unique for each QToolBar and QDockWidget you
add to the QMainWindow
To restore the saved state, pass the return value and \a version
number to restoreState().
To save the geometry when the window closes, you can
implement a close event like this:
\snippet doc/src/snippets/code/src_gui_widgets_qmainwindow.cpp 0
\sa restoreState(), QWidget::saveGeometry(), QWidget::restoreGeometry()
*/
QByteArray QMainWindow::saveState(int version) const
{
QByteArray data;
QDataStream stream(&data, QIODevice::WriteOnly);
stream << QMainWindowLayout::VersionMarker;
stream << version;
d_func()->layout->saveState(stream);
return data;
}
/*!
Restores the \a state of this mainwindow's toolbars and
dockwidgets. The \a version number is compared with that stored
in \a state. If they do not match, the mainwindow's state is left
unchanged, and this function returns \c false; otherwise, the state
is restored, and this function returns \c true.
To restore geometry saved using QSettings, you can use code like
this:
\snippet doc/src/snippets/code/src_gui_widgets_qmainwindow.cpp 1
\sa saveState(), QWidget::saveGeometry(),
QWidget::restoreGeometry(), restoreDockWidget()
*/
bool QMainWindow::restoreState(const QByteArray &state, int version)
{
if (state.isEmpty())
return false;
QByteArray sd = state;
QDataStream stream(&sd, QIODevice::ReadOnly);
int marker, v;
stream >> marker;
stream >> v;
if (stream.status() != QDataStream::Ok || marker != QMainWindowLayout::VersionMarker || v != version)
return false;
bool restored = d_func()->layout->restoreState(stream);
return restored;
}
#if !defined(QT_NO_DOCKWIDGET) && !defined(QT_NO_CURSOR)
QCursor QMainWindowPrivate::separatorCursor(const QList<int> &path) const
{
QDockAreaLayoutInfo *info = layout->layoutState.dockAreaLayout.info(path);
Q_ASSERT(info != 0);
if (path.size() == 1) { // is this the "top-level" separator which separates a dock area
// from the central widget?
switch (path.first()) {
case QInternal::LeftDock:
case QInternal::RightDock:
return Qt::SplitHCursor;
case QInternal::TopDock:
case QInternal::BottomDock:
return Qt::SplitVCursor;
default:
break;
}
}
// no, it's a splitter inside a dock area, separating two dock widgets
return info->o == Qt::Horizontal
? Qt::SplitHCursor : Qt::SplitVCursor;
}
void QMainWindowPrivate::adjustCursor(const QPoint &pos)
{
Q_Q(QMainWindow);
hoverPos = pos;
if (pos == QPoint(0, 0)) {
if (!hoverSeparator.isEmpty())
q->update(layout->layoutState.dockAreaLayout.separatorRect(hoverSeparator));
hoverSeparator.clear();
if (cursorAdjusted) {
cursorAdjusted = false;
if (hasOldCursor)
q->setCursor(oldCursor);
else
q->unsetCursor();
}
} else {
QList<int> pathToSeparator
= layout->layoutState.dockAreaLayout.findSeparator(pos);
if (pathToSeparator != hoverSeparator) {
if (!hoverSeparator.isEmpty())
q->update(layout->layoutState.dockAreaLayout.separatorRect(hoverSeparator));
hoverSeparator = pathToSeparator;
if (hoverSeparator.isEmpty()) {
if (cursorAdjusted) {
cursorAdjusted = false;
if (hasOldCursor)
q->setCursor(oldCursor);
else
q->unsetCursor();
}
} else {
q->update(layout->layoutState.dockAreaLayout.separatorRect(hoverSeparator));
if (!cursorAdjusted) {
oldCursor = q->cursor();
hasOldCursor = q->testAttribute(Qt::WA_SetCursor);
}
QCursor cursor = separatorCursor(hoverSeparator);
cursorAdjusted = false; //to not reset the oldCursor in event(CursorChange)
q->setCursor(cursor);
cursorAdjusted = true;
}
}
}
}
#endif
/*! \reimp */
bool QMainWindow::event(QEvent *event)
{
Q_D(QMainWindow);
switch (event->type()) {
#ifndef QT_NO_DOCKWIDGET
case QEvent::Paint: {
QPainter p(this);
QRegion r = static_cast<QPaintEvent*>(event)->region();
d->layout->layoutState.dockAreaLayout.paintSeparators(&p, this, r, d->hoverPos);
break;
}
#ifndef QT_NO_CURSOR
case QEvent::HoverMove: {
d->adjustCursor(static_cast<QHoverEvent*>(event)->pos());
break;
}
// We don't want QWidget to call update() on the entire QMainWindow
// on HoverEnter and HoverLeave, hence accept the event (return true).
case QEvent::HoverEnter:
return true;
case QEvent::HoverLeave:
d->adjustCursor(QPoint(0, 0));
return true;
case QEvent::ShortcutOverride: // when a menu pops up
d->adjustCursor(QPoint(0, 0));
break;
#endif // QT_NO_CURSOR
case QEvent::MouseButtonPress: {
QMouseEvent *e = static_cast<QMouseEvent*>(event);
if (e->button() == Qt::LeftButton && d->layout->startSeparatorMove(e->pos())) {
// The click was on a separator, eat this event
e->accept();
return true;
}
break;
}
case QEvent::MouseMove: {
QMouseEvent *e = static_cast<QMouseEvent*>(event);
#ifndef QT_NO_CURSOR
d->adjustCursor(e->pos());
#endif
if (e->buttons() & Qt::LeftButton) {
if (d->layout->separatorMove(e->pos())) {
// We're moving a separator, eat this event
e->accept();
return true;
}
}
break;
}
case QEvent::MouseButtonRelease: {
QMouseEvent *e = static_cast<QMouseEvent*>(event);
if (d->layout->endSeparatorMove(e->pos())) {
// We've released a separator, eat this event
e->accept();
return true;
}
break;
}
#endif
#ifndef QT_NO_TOOLBAR
case QEvent::ToolBarChange: {
d->layout->toggleToolBarsVisible();
return true;
}
#endif
#ifndef QT_NO_STATUSTIP
case QEvent::StatusTip:
#ifndef QT_NO_STATUSBAR
if (QStatusBar *sb = d->layout->statusBar())
sb->showMessage(static_cast<QStatusTipEvent*>(event)->tip());
else
#endif
static_cast<QStatusTipEvent*>(event)->ignore();
return true;
#endif // QT_NO_STATUSTIP
case QEvent::StyleChange:
#ifndef QT_NO_DOCKWIDGET
d->layout->layoutState.dockAreaLayout.styleChangedEvent();
#endif
if (!d->explicitIconSize)
setIconSize(QSize());
break;
#ifdef Q_WS_MAC
case QEvent::Show:
if (unifiedTitleAndToolBarOnMac())
d->layout->syncUnifiedToolbarVisibility();
d->layout->blockVisiblityCheck = false;
break;
case QEvent::WindowStateChange:
{
if (isHidden()) {
// We are coming out of a minimize, leave things as is.
d->layout->blockVisiblityCheck = true;
}
# ifdef QT_MAC_USE_COCOA
// We need to update the HIToolbar status when we go out of or into fullscreen.
QWindowStateChangeEvent *wce = static_cast<QWindowStateChangeEvent *>(event);
if ((windowState() & Qt::WindowFullScreen) || (wce->oldState() & Qt::WindowFullScreen)) {
d->layout->updateHIToolBarStatus();
}
# endif // Cocoa
}
break;
#endif // Q_WS_MAC
#if !defined(QT_NO_DOCKWIDGET) && !defined(QT_NO_CURSOR)
case QEvent::CursorChange:
if (d->cursorAdjusted) {
d->oldCursor = cursor();
d->hasOldCursor = testAttribute(Qt::WA_SetCursor);
}
break;
#endif
default:
break;
}
return QWidget::event(event);
}
#ifndef QT_NO_TOOLBAR
/*!
\property QMainWindow::unifiedTitleAndToolBarOnMac
\brief whether the window uses the unified title and toolbar look on Mac OS X
\since 4.3
This property is false by default and only has any effect on Mac OS X 10.4 or higher.
If set to true, then the top toolbar area is replaced with a Carbon HIToolbar
or a Cocoa NSToolbar (depending on whether Qt was built with Carbon or Cocoa).
All toolbars in the top toolbar area and any toolbars added afterwards are
moved to that. This means a couple of things.
\list
\i QToolBars in this toolbar area are not movable and you cannot drag other
toolbars to it
\i Toolbar breaks are not respected or preserved
\i Any custom widgets in the toolbar will not be shown if the toolbar
becomes too small (only actions will be shown)
\i Before Qt 4.5, if you called showFullScreen() on the main window, the QToolbar would
disappear since it is considered to be part of the title bar. Qt 4.5 and up will now work around this by pulling
the toolbars out and back into the regular toolbar and vice versa when you swap out.
\endlist
Setting this back to false will remove these restrictions.
The Qt::WA_MacBrushedMetal attribute takes precedence over this property.
*/
void QMainWindow::setUnifiedTitleAndToolBarOnMac(bool set)
{
#ifdef Q_WS_MAC
Q_D(QMainWindow);
if (!isWindow() || d->useHIToolBar == set || QSysInfo::MacintoshVersion < QSysInfo::MV_10_3)
return;
// ### Disable the unified toolbar when using anything but the native graphics system.
// ### Disable when using alien widgets as well
if (windowSurface() || testAttribute(Qt::WA_NativeWindow) == false)
return;
d->useHIToolBar = set;
createWinId(); // We need the hiview for down below.
d->layout->updateHIToolBarStatus();
// Enabling the unified toolbar clears the opaque size grip setting, update it.
d->macUpdateOpaqueSizeGrip();
#else
Q_UNUSED(set)
#endif
}
bool QMainWindow::unifiedTitleAndToolBarOnMac() const
{
#ifdef Q_WS_MAC
return d_func()->useHIToolBar && !testAttribute(Qt::WA_MacBrushedMetal) && !(windowFlags() & Qt::FramelessWindowHint);
#endif
return false;
}
#endif // QT_NO_TOOLBAR
/*!
\internal
*/
bool QMainWindow::isSeparator(const QPoint &pos) const
{
#ifndef QT_NO_DOCKWIDGET
Q_D(const QMainWindow);
return !d->layout->layoutState.dockAreaLayout.findSeparator(pos).isEmpty();
#else
Q_UNUSED(pos);
return false;
#endif
}
#ifndef QT_NO_CONTEXTMENU
/*!
\reimp
*/
void QMainWindow::contextMenuEvent(QContextMenuEvent *event)
{
event->ignore();
// only show the context menu for direct QDockWidget and QToolBar
// children and for the menu bar as well
QWidget *child = childAt(event->pos());
while (child && child != this) {
#ifndef QT_NO_MENUBAR
if (QMenuBar *mb = qobject_cast<QMenuBar *>(child)) {
if (mb->parentWidget() != this)
return;
break;
}
#endif
#ifndef QT_NO_DOCKWIDGET
if (QDockWidget *dw = qobject_cast<QDockWidget *>(child)) {
if (dw->parentWidget() != this)
return;
if (dw->widget()
&& dw->widget()->geometry().contains(child->mapFrom(this, event->pos()))) {
// ignore the event if the mouse is over the QDockWidget contents
return;
}
break;
}
#endif // QT_NO_DOCKWIDGET
#ifndef QT_NO_TOOLBAR
if (QToolBar *tb = qobject_cast<QToolBar *>(child)) {
if (tb->parentWidget() != this)
return;
break;
}
#endif
child = child->parentWidget();
}
if (child == this)
return;
#ifndef QT_NO_MENU
QMenu *popup = createPopupMenu();
if (popup) {
if (!popup->isEmpty()) {
popup->setAttribute(Qt::WA_DeleteOnClose);
popup->popup(event->globalPos());
event->accept();
} else {
delete popup;
}
}
#endif
}
#endif // QT_NO_CONTEXTMENU
#ifndef QT_NO_MENU
/*!
Returns a popup menu containing checkable entries for the toolbars and
dock widgets present in the main window. If there are no toolbars and
dock widgets present, this function returns a null pointer.
By default, this function is called by the main window when the user
activates a context menu, typically by right-clicking on a toolbar or a dock
widget.
If you want to create a custom popup menu, reimplement this function and
return a newly-created popup menu. Ownership of the popup menu is transferred
to the caller.
\sa addDockWidget(), addToolBar(), menuBar()
*/
QMenu *QMainWindow::createPopupMenu()
{
Q_D(QMainWindow);
QMenu *menu = 0;
#ifndef QT_NO_DOCKWIDGET
QList<QDockWidget *> dockwidgets = qFindChildren<QDockWidget *>(this);
if (dockwidgets.size()) {
menu = new QMenu(this);
for (int i = 0; i < dockwidgets.size(); ++i) {
QDockWidget *dockWidget = dockwidgets.at(i);
if (dockWidget->parentWidget() == this
&& !d->layout->layoutState.dockAreaLayout.indexOf(dockWidget).isEmpty()) {
menu->addAction(dockwidgets.at(i)->toggleViewAction());
}
}
menu->addSeparator();
}
#endif // QT_NO_DOCKWIDGET
#ifndef QT_NO_TOOLBAR
QList<QToolBar *> toolbars = qFindChildren<QToolBar *>(this);
if (toolbars.size()) {
if (!menu)
menu = new QMenu(this);
for (int i = 0; i < toolbars.size(); ++i) {
QToolBar *toolBar = toolbars.at(i);
if (toolBar->parentWidget() == this
&& (!d->layout->layoutState.toolBarAreaLayout.indexOf(toolBar).isEmpty()
|| (unifiedTitleAndToolBarOnMac()
&& toolBarArea(toolBar) == Qt::TopToolBarArea))) {
menu->addAction(toolbars.at(i)->toggleViewAction());
}
}
}
#endif
Q_UNUSED(d);
return menu;
}
#endif // QT_NO_MENU
QT_END_NAMESPACE
#endif // QT_NO_MAINWINDOW
posted on 2011-10-18 18:39 A_Number__1 阅读(2958) 评论(0) 编辑 收藏 举报
