/**************************************************************************** ** ** Copyright (C) 2016 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtWidgets module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see https://www.qt.io/terms-conditions. For further ** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or (at your option) the GNU General ** Public license version 3 or any later version approved by the KDE Free ** Qt Foundation. The licenses are as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 ** included in the packaging of this file. Please review the following ** information to ensure the GNU General Public License requirements will ** be met: https://www.gnu.org/licenses/gpl-2.0.html and ** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #if QT_CONFIG(colordialog) #include "qcolordialog.h" #endif #if QT_CONFIG(fontdialog) #include "qfontdialog.h" #endif #if QT_CONFIG(filedialog) #include "qfiledialog.h" #endif #include "qevent.h" #include "qdesktopwidget.h" #include "qapplication.h" #include "qlayout.h" #if QT_CONFIG(sizegrip) #include "qsizegrip.h" #endif #if QT_CONFIG(whatsthis) #include "qwhatsthis.h" #endif #if QT_CONFIG(menu) #include "qmenu.h" #endif #include "qcursor.h" #if QT_CONFIG(messagebox) #include "qmessagebox.h" #endif #if QT_CONFIG(errormessage) #include "qerrormessage.h" #endif #include #include "private/qdialog_p.h" #include "private/qguiapplication_p.h" #ifndef QT_NO_ACCESSIBILITY #include "qaccessible.h" #endif QT_BEGIN_NAMESPACE static inline int themeDialogType(const QDialog *dialog) { #if QT_CONFIG(filedialog) if (qobject_cast(dialog)) return QPlatformTheme::FileDialog; #endif #if QT_CONFIG(colordialog) if (qobject_cast(dialog)) return QPlatformTheme::ColorDialog; #endif #if QT_CONFIG(fontdialog) if (qobject_cast(dialog)) return QPlatformTheme::FontDialog; #endif #if QT_CONFIG(messagebox) if (qobject_cast(dialog)) return QPlatformTheme::MessageDialog; #endif #if QT_CONFIG(errormessage) if (qobject_cast(dialog)) return QPlatformTheme::MessageDialog; #endif return -1; } QDialogPrivate::~QDialogPrivate() { delete m_platformHelper; } QPlatformDialogHelper *QDialogPrivate::platformHelper() const { // Delayed creation of the platform, ensuring that // that qobject_cast<> on the dialog works in the plugin. if (!m_platformHelperCreated && canBeNativeDialog()) { m_platformHelperCreated = true; QDialogPrivate *ncThis = const_cast(this); QDialog *dialog = ncThis->q_func(); const int type = themeDialogType(dialog); if (type >= 0) { m_platformHelper = QGuiApplicationPrivate::platformTheme() ->createPlatformDialogHelper(static_cast(type)); if (m_platformHelper) { QObject::connect(m_platformHelper, SIGNAL(accept()), dialog, SLOT(accept())); QObject::connect(m_platformHelper, SIGNAL(reject()), dialog, SLOT(reject())); ncThis->initHelper(m_platformHelper); } } } return m_platformHelper; } bool QDialogPrivate::canBeNativeDialog() const { QDialogPrivate *ncThis = const_cast(this); QDialog *dialog = ncThis->q_func(); const int type = themeDialogType(dialog); if (type >= 0) return QGuiApplicationPrivate::platformTheme() ->usePlatformNativeDialog(static_cast(type)); return false; } QWindow *QDialogPrivate::parentWindow() const { if (const QWidget *parent = q_func()->nativeParentWidget()) return parent->windowHandle(); return 0; } bool QDialogPrivate::setNativeDialogVisible(bool visible) { if (QPlatformDialogHelper *helper = platformHelper()) { if (visible) { Q_Q(QDialog); helperPrepareShow(helper); nativeDialogInUse = helper->show(q->windowFlags(), q->windowModality(), parentWindow()); } else if (nativeDialogInUse) { helper->hide(); } } return nativeDialogInUse; } QVariant QDialogPrivate::styleHint(QPlatformDialogHelper::StyleHint hint) const { if (const QPlatformDialogHelper *helper = platformHelper()) return helper->styleHint(hint); return QPlatformDialogHelper::defaultStyleHint(hint); } void QDialogPrivate::deletePlatformHelper() { delete m_platformHelper; m_platformHelper = 0; m_platformHelperCreated = false; nativeDialogInUse = false; } /*! \class QDialog \brief The QDialog class is the base class of dialog windows. \ingroup dialog-classes \ingroup abstractwidgets \inmodule QtWidgets A dialog window is a top-level window mostly used for short-term tasks and brief communications with the user. QDialogs may be modal or modeless. QDialogs can provide a \l{#return}{return value}, and they can have \l{#default}{default buttons}. QDialogs can also have a QSizeGrip in their lower-right corner, using setSizeGripEnabled(). Note that QDialog (and any other widget that has type \c Qt::Dialog) uses the parent widget slightly differently from other classes in Qt. A dialog is always a top-level widget, but if it has a parent, its default location is centered on top of the parent's top-level widget (if it is not top-level itself). It will also share the parent's taskbar entry. Use the overload of the QWidget::setParent() function to change the ownership of a QDialog widget. This function allows you to explicitly set the window flags of the reparented widget; using the overloaded function will clear the window flags specifying the window-system properties for the widget (in particular it will reset the Qt::Dialog flag). \section1 Modal Dialogs A \b{modal} dialog is a dialog that blocks input to other visible windows in the same application. Dialogs that are used to request a file name from the user or that are used to set application preferences are usually modal. Dialogs can be \l{Qt::ApplicationModal}{application modal} (the default) or \l{Qt::WindowModal}{window modal}. When an application modal dialog is opened, the user must finish interacting with the dialog and close it before they can access any other window in the application. Window modal dialogs only block access to the window associated with the dialog, allowing the user to continue to use other windows in an application. The most common way to display a modal dialog is to call its exec() function. When the user closes the dialog, exec() will provide a useful \l{#return}{return value}. Typically, to get the dialog to close and return the appropriate value, we connect a default button, e.g. \uicontrol OK, to the accept() slot and a \uicontrol Cancel button to the reject() slot. Alternatively you can call the done() slot with \c Accepted or \c Rejected. An alternative is to call setModal(true) or setWindowModality(), then show(). Unlike exec(), show() returns control to the caller immediately. Calling setModal(true) is especially useful for progress dialogs, where the user must have the ability to interact with the dialog, e.g. to cancel a long running operation. If you use show() and setModal(true) together to perform a long operation, you must call QApplication::processEvents() periodically during processing to enable the user to interact with the dialog. (See QProgressDialog.) \section1 Modeless Dialogs A \b{modeless} dialog is a dialog that operates independently of other windows in the same application. Find and replace dialogs in word-processors are often modeless to allow the user to interact with both the application's main window and with the dialog. Modeless dialogs are displayed using show(), which returns control to the caller immediately. If you invoke the \l{QWidget::show()}{show()} function after hiding a dialog, the dialog will be displayed in its original position. This is because the window manager decides the position for windows that have not been explicitly placed by the programmer. To preserve the position of a dialog that has been moved by the user, save its position in your \l{QWidget::closeEvent()}{closeEvent()} handler and then move the dialog to that position, before showing it again. \target default \section1 Default Button A dialog's \e default button is the button that's pressed when the user presses Enter (Return). This button is used to signify that the user accepts the dialog's settings and wants to close the dialog. Use QPushButton::setDefault(), QPushButton::isDefault() and QPushButton::autoDefault() to set and control the dialog's default button. \target escapekey \section1 Escape Key If the user presses the Esc key in a dialog, QDialog::reject() will be called. This will cause the window to close: The \l{QCloseEvent}{close event} cannot be \l{QEvent::ignore()}{ignored}. \section1 Extensibility Extensibility is the ability to show the dialog in two ways: a partial dialog that shows the most commonly used options, and a full dialog that shows all the options. Typically an extensible dialog will initially appear as a partial dialog, but with a \uicontrol More toggle button. If the user presses the \uicontrol More button down, the dialog is expanded. The \l{Extension Example} shows how to achieve extensible dialogs using Qt. \target return \section1 Return Value (Modal Dialogs) Modal dialogs are often used in situations where a return value is required, e.g. to indicate whether the user pressed \uicontrol OK or \uicontrol Cancel. A dialog can be closed by calling the accept() or the reject() slots, and exec() will return \c Accepted or \c Rejected as appropriate. The exec() call returns the result of the dialog. The result is also available from result() if the dialog has not been destroyed. In order to modify your dialog's close behavior, you can reimplement the functions accept(), reject() or done(). The \l{QWidget::closeEvent()}{closeEvent()} function should only be reimplemented to preserve the dialog's position or to override the standard close or reject behavior. \target examples \section1 Code Examples A modal dialog: \snippet dialogs/dialogs.cpp 1 A modeless dialog: \snippet dialogs/dialogs.cpp 0 \sa QDialogButtonBox, QTabWidget, QWidget, QProgressDialog, {fowler}{GUI Design Handbook: Dialogs, Standard}, {Extension Example}, {Standard Dialogs Example} */ /*! \enum QDialog::DialogCode The value returned by a modal dialog. \value Accepted \value Rejected */ /*! \property QDialog::sizeGripEnabled \brief whether the size grip is enabled A QSizeGrip is placed in the bottom-right corner of the dialog when this property is enabled. By default, the size grip is disabled. */ /*! Constructs a dialog with parent \a parent. A dialog is always a top-level widget, but if it has a parent, its default location is centered on top of the parent. It will also share the parent's taskbar entry. The widget flags \a f are passed on to the QWidget constructor. If, for example, you don't want a What's This button in the title bar of the dialog, pass Qt::WindowTitleHint | Qt::WindowSystemMenuHint in \a f. \sa QWidget::setWindowFlags() */ QDialog::QDialog(QWidget *parent, Qt::WindowFlags f) : QWidget(*new QDialogPrivate, parent, f | ((f & Qt::WindowType_Mask) == 0 ? Qt::Dialog : Qt::WindowType(0))) { } /*! \overload \internal */ QDialog::QDialog(QDialogPrivate &dd, QWidget *parent, Qt::WindowFlags f) : QWidget(dd, parent, f | ((f & Qt::WindowType_Mask) == 0 ? Qt::Dialog : Qt::WindowType(0))) { } /*! Destroys the QDialog, deleting all its children. */ QDialog::~QDialog() { QT_TRY { // Need to hide() here, as our (to-be) overridden hide() // will not be called in ~QWidget. hide(); } QT_CATCH(...) { // we're in the destructor - just swallow the exception } } /*! \internal This function is called by the push button \a pushButton when it becomes the default button. If \a pushButton is 0, the dialogs default default button becomes the default button. This is what a push button calls when it loses focus. */ #if QT_CONFIG(pushbutton) void QDialogPrivate::setDefault(QPushButton *pushButton) { Q_Q(QDialog); bool hasMain = false; QList list = q->findChildren(); for (int i=0; iwindow() == q) { if (pb == mainDef) hasMain = true; if (pb != pushButton) pb->setDefault(false); } } if (!pushButton && hasMain) mainDef->setDefault(true); if (!hasMain) mainDef = pushButton; } /*! \internal This function sets the default default push button to \a pushButton. This function is called by QPushButton::setDefault(). */ void QDialogPrivate::setMainDefault(QPushButton *pushButton) { mainDef = 0; setDefault(pushButton); } /*! \internal Hides the default button indicator. Called when non auto-default push button get focus. */ void QDialogPrivate::hideDefault() { Q_Q(QDialog); QList list = q->findChildren(); for (int i=0; isetDefault(false); } } #endif void QDialogPrivate::resetModalitySetByOpen() { Q_Q(QDialog); if (resetModalityTo != -1 && !q->testAttribute(Qt::WA_SetWindowModality)) { // open() changed the window modality and the user didn't touch it afterwards; restore it q->setWindowModality(Qt::WindowModality(resetModalityTo)); q->setAttribute(Qt::WA_SetWindowModality, wasModalitySet); #ifdef Q_OS_MAC Q_ASSERT(resetModalityTo != Qt::WindowModal); q->setParent(q->parentWidget(), Qt::Dialog); #endif } resetModalityTo = -1; } /*! In general returns the modal dialog's result code, \c Accepted or \c Rejected. \note When called on a QMessageBox instance, the returned value is a value of the \l QMessageBox::StandardButton enum. Do not call this function if the dialog was constructed with the Qt::WA_DeleteOnClose attribute. */ int QDialog::result() const { Q_D(const QDialog); return d->rescode; } /*! \fn void QDialog::setResult(int i) Sets the modal dialog's result code to \a i. \note We recommend that you use one of the values defined by QDialog::DialogCode. */ void QDialog::setResult(int r) { Q_D(QDialog); d->rescode = r; } /*! \since 4.5 Shows the dialog as a \l{QDialog#Modal Dialogs}{window modal dialog}, returning immediately. \sa exec(), show(), result(), setWindowModality() */ void QDialog::open() { Q_D(QDialog); Qt::WindowModality modality = windowModality(); if (modality != Qt::WindowModal) { d->resetModalityTo = modality; d->wasModalitySet = testAttribute(Qt::WA_SetWindowModality); setWindowModality(Qt::WindowModal); setAttribute(Qt::WA_SetWindowModality, false); #ifdef Q_OS_MAC setParent(parentWidget(), Qt::Sheet); #endif } setResult(0); show(); } /*! Shows the dialog as a \l{QDialog#Modal Dialogs}{modal dialog}, blocking until the user closes it. The function returns a \l DialogCode result. If the dialog is \l{Qt::ApplicationModal}{application modal}, users cannot interact with any other window in the same application until they close the dialog. If the dialog is \l{Qt::ApplicationModal}{window modal}, only interaction with the parent window is blocked while the dialog is open. By default, the dialog is application modal. \sa open(), show(), result(), setWindowModality() */ int QDialog::exec() { Q_D(QDialog); if (Q_UNLIKELY(d->eventLoop)) { qWarning("QDialog::exec: Recursive call detected"); return -1; } bool deleteOnClose = testAttribute(Qt::WA_DeleteOnClose); setAttribute(Qt::WA_DeleteOnClose, false); d->resetModalitySetByOpen(); bool wasShowModal = testAttribute(Qt::WA_ShowModal); setAttribute(Qt::WA_ShowModal, true); setResult(0); show(); QPointer guard = this; if (d->nativeDialogInUse) { d->platformHelper()->exec(); } else { QEventLoop eventLoop; d->eventLoop = &eventLoop; (void) eventLoop.exec(QEventLoop::DialogExec); } if (guard.isNull()) return QDialog::Rejected; d->eventLoop = 0; setAttribute(Qt::WA_ShowModal, wasShowModal); int res = result(); if (d->nativeDialogInUse) d->helperDone(static_cast(res), d->platformHelper()); if (deleteOnClose) delete this; return res; } /*! Closes the dialog and sets its result code to \a r. If this dialog is shown with exec(), done() causes the local event loop to finish, and exec() to return \a r. As with QWidget::close(), done() deletes the dialog if the Qt::WA_DeleteOnClose flag is set. If the dialog is the application's main widget, the application terminates. If the dialog is the last window closed, the QApplication::lastWindowClosed() signal is emitted. \sa accept(), reject(), QApplication::activeWindow(), QCoreApplication::quit() */ void QDialog::done(int r) { Q_D(QDialog); setResult(r); hide(); d->close_helper(QWidgetPrivate::CloseNoEvent); d->resetModalitySetByOpen(); emit finished(r); if (r == Accepted) emit accepted(); else if (r == Rejected) emit rejected(); } /*! Hides the modal dialog and sets the result code to \c Accepted. \sa reject(), done() */ void QDialog::accept() { done(Accepted); } /*! Hides the modal dialog and sets the result code to \c Rejected. \sa accept(), done() */ void QDialog::reject() { done(Rejected); } /*! \reimp */ bool QDialog::eventFilter(QObject *o, QEvent *e) { return QWidget::eventFilter(o, e); } /***************************************************************************** Event handlers *****************************************************************************/ #ifndef QT_NO_CONTEXTMENU /*! \reimp */ void QDialog::contextMenuEvent(QContextMenuEvent *e) { #if !QT_CONFIG(whatsthis) || !QT_CONFIG(menu) Q_UNUSED(e); #else QWidget *w = childAt(e->pos()); if (!w) { w = rect().contains(e->pos()) ? this : 0; if (!w) return; } while (w && w->whatsThis().size() == 0 && !w->testAttribute(Qt::WA_CustomWhatsThis)) w = w->isWindow() ? 0 : w->parentWidget(); if (w) { QPointer p = new QMenu(this); QAction *wt = p.data()->addAction(tr("What's This?")); if (p.data()->exec(e->globalPos()) == wt) { QHelpEvent e(QEvent::WhatsThis, w->rect().center(), w->mapToGlobal(w->rect().center())); QApplication::sendEvent(w, &e); } delete p.data(); } #endif } #endif // QT_NO_CONTEXTMENU /*! \reimp */ void QDialog::keyPressEvent(QKeyEvent *e) { #ifndef QT_NO_SHORTCUT // Calls reject() if Escape is pressed. Simulates a button // click for the default button if Enter is pressed. Move focus // for the arrow keys. Ignore the rest. if (e->matches(QKeySequence::Cancel)) { reject(); } else #endif if (!e->modifiers() || (e->modifiers() & Qt::KeypadModifier && e->key() == Qt::Key_Enter)) { switch (e->key()) { #if QT_CONFIG(pushbutton) case Qt::Key_Enter: case Qt::Key_Return: { QList list = findChildren(); for (int i=0; iisDefault() && pb->isVisible()) { if (pb->isEnabled()) pb->click(); return; } } } break; #endif default: e->ignore(); return; } } else { e->ignore(); } } /*! \reimp */ void QDialog::closeEvent(QCloseEvent *e) { #if QT_CONFIG(whatsthis) if (isModal() && QWhatsThis::inWhatsThisMode()) QWhatsThis::leaveWhatsThisMode(); #endif if (isVisible()) { QPointer that = this; reject(); if (that && isVisible()) e->ignore(); } else { e->accept(); } } /***************************************************************************** Geometry management. *****************************************************************************/ /*! \reimp */ void QDialog::setVisible(bool visible) { Q_D(QDialog); if (!testAttribute(Qt::WA_DontShowOnScreen) && d->canBeNativeDialog() && d->setNativeDialogVisible(visible)) return; if (visible) { if (testAttribute(Qt::WA_WState_ExplicitShowHide) && !testAttribute(Qt::WA_WState_Hidden)) return; QWidget::setVisible(visible); showExtension(d->doShowExtension); QWidget *fw = window()->focusWidget(); if (!fw) fw = this; /* The following block is to handle a special case, and does not really follow propper logic in concern of autoDefault and TAB order. However, it's here to ease usage for the users. If a dialog has a default QPushButton, and first widget in the TAB order also is a QPushButton, then we give focus to the main default QPushButton. This simplifies code for the developers, and actually catches most cases... If not, then they simply have to use [widget*]->setFocus() themselves... */ #if QT_CONFIG(pushbutton) if (d->mainDef && fw->focusPolicy() == Qt::NoFocus) { QWidget *first = fw; while ((first = first->nextInFocusChain()) != fw && first->focusPolicy() == Qt::NoFocus) ; if (first != d->mainDef && qobject_cast(first)) d->mainDef->setFocus(); } if (!d->mainDef && isWindow()) { QWidget *w = fw; while ((w = w->nextInFocusChain()) != fw) { QPushButton *pb = qobject_cast(w); if (pb && pb->autoDefault() && pb->focusPolicy() != Qt::NoFocus) { pb->setDefault(true); break; } } } #endif if (fw && !fw->hasFocus()) { QFocusEvent e(QEvent::FocusIn, Qt::TabFocusReason); QApplication::sendEvent(fw, &e); } #ifndef QT_NO_ACCESSIBILITY QAccessibleEvent event(this, QAccessible::DialogStart); QAccessible::updateAccessibility(&event); #endif } else { if (testAttribute(Qt::WA_WState_ExplicitShowHide) && testAttribute(Qt::WA_WState_Hidden)) return; #ifndef QT_NO_ACCESSIBILITY if (isVisible()) { QAccessibleEvent event(this, QAccessible::DialogEnd); QAccessible::updateAccessibility(&event); } #endif // Reimplemented to exit a modal event loop when the dialog is hidden. QWidget::setVisible(visible); if (d->eventLoop) d->eventLoop->exit(); } #if QT_CONFIG(pushbutton) const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme(); if (d->mainDef && isActiveWindow() && theme->themeHint(QPlatformTheme::DialogSnapToDefaultButton).toBool()) QCursor::setPos(d->mainDef->mapToGlobal(d->mainDef->rect().center())); #endif } /*!\reimp */ void QDialog::showEvent(QShowEvent *event) { if (!event->spontaneous() && !testAttribute(Qt::WA_Moved)) { Qt::WindowStates state = windowState(); adjustPosition(parentWidget()); setAttribute(Qt::WA_Moved, false); // not really an explicit position if (state != windowState()) setWindowState(state); } } /*! \internal */ void QDialog::adjustPosition(QWidget* w) { if (const QPlatformTheme *theme = QGuiApplicationPrivate::platformTheme()) if (theme->themeHint(QPlatformTheme::WindowAutoPlacement).toBool()) return; QPoint p(0, 0); int extraw = 0, extrah = 0, scrn = 0; if (w) w = w->window(); QRect desk; if (w) { scrn = QApplication::desktop()->screenNumber(w); } else if (QApplication::desktop()->isVirtualDesktop()) { scrn = QApplication::desktop()->screenNumber(QCursor::pos()); } else { scrn = QApplication::desktop()->screenNumber(this); } desk = QApplication::desktop()->availableGeometry(scrn); QWidgetList list = QApplication::topLevelWidgets(); for (int i = 0; (extraw == 0 || extrah == 0) && i < list.size(); ++i) { QWidget * current = list.at(i); if (current->isVisible()) { int framew = current->geometry().x() - current->x(); int frameh = current->geometry().y() - current->y(); extraw = qMax(extraw, framew); extrah = qMax(extrah, frameh); } } // sanity check for decoration frames. With embedding, we // might get extraordinary values if (extraw == 0 || extrah == 0 || extraw >= 10 || extrah >= 40) { extrah = 40; extraw = 10; } if (w) { // Use pos() if the widget is embedded into a native window QPoint pp; if (w->windowHandle() && w->windowHandle()->property("_q_embedded_native_parent_handle").value()) pp = w->pos(); else pp = w->mapToGlobal(QPoint(0,0)); p = QPoint(pp.x() + w->width()/2, pp.y() + w->height()/ 2); } else { // p = middle of the desktop p = QPoint(desk.x() + desk.width()/2, desk.y() + desk.height()/2); } // p = origin of this p = QPoint(p.x()-width()/2 - extraw, p.y()-height()/2 - extrah); if (p.x() + extraw + width() > desk.x() + desk.width()) p.setX(desk.x() + desk.width() - width() - extraw); if (p.x() < desk.x()) p.setX(desk.x()); if (p.y() + extrah + height() > desk.y() + desk.height()) p.setY(desk.y() + desk.height() - height() - extrah); if (p.y() < desk.y()) p.setY(desk.y()); // QTBUG-52735: Manually set the correct target screen since scaling in a // subsequent call to QWindow::resize() may otherwise use the wrong factor // if the screen changed notification is still in an event queue. if (scrn >= 0) { if (QWindow *window = windowHandle()) window->setScreen(QGuiApplication::screens().at(scrn)); } move(p); } /*! \obsolete If \a orientation is Qt::Horizontal, the extension will be displayed to the right of the dialog's main area. If \a orientation is Qt::Vertical, the extension will be displayed below the dialog's main area. Instead of using this functionality, we recommend that you simply call show() or hide() on the part of the dialog that you want to use as an extension. See the \l{Extension Example} for details. \sa setExtension() */ void QDialog::setOrientation(Qt::Orientation orientation) { Q_D(QDialog); d->orientation = orientation; } /*! \obsolete Returns the dialog's extension orientation. Instead of using this functionality, we recommend that you simply call show() or hide() on the part of the dialog that you want to use as an extension. See the \l{Extension Example} for details. \sa extension() */ Qt::Orientation QDialog::orientation() const { Q_D(const QDialog); return d->orientation; } /*! \obsolete Sets the widget, \a extension, to be the dialog's extension, deleting any previous extension. The dialog takes ownership of the extension. Note that if 0 is passed any existing extension will be deleted. This function must only be called while the dialog is hidden. Instead of using this functionality, we recommend that you simply call show() or hide() on the part of the dialog that you want to use as an extension. See the \l{Extension Example} for details. \sa showExtension(), setOrientation() */ void QDialog::setExtension(QWidget* extension) { Q_D(QDialog); delete d->extension; d->extension = extension; if (!extension) return; if (extension->parentWidget() != this) extension->setParent(this); extension->hide(); } /*! \obsolete Returns the dialog's extension or 0 if no extension has been defined. Instead of using this functionality, we recommend that you simply call show() or hide() on the part of the dialog that you want to use as an extension. See the \l{Extension Example} for details. \sa showExtension(), setOrientation() */ QWidget* QDialog::extension() const { Q_D(const QDialog); return d->extension; } /*! \obsolete If \a showIt is true, the dialog's extension is shown; otherwise the extension is hidden. Instead of using this functionality, we recommend that you simply call show() or hide() on the part of the dialog that you want to use as an extension. See the \l{Extension Example} for details. \sa show(), setExtension(), setOrientation() */ void QDialog::showExtension(bool showIt) { Q_D(QDialog); d->doShowExtension = showIt; if (!d->extension) return; if (!testAttribute(Qt::WA_WState_Visible)) return; if (d->extension->isVisible() == showIt) return; if (showIt) { d->size = size(); d->min = minimumSize(); d->max = maximumSize(); if (layout()) layout()->setEnabled(false); QSize s(d->extension->sizeHint() .expandedTo(d->extension->minimumSize()) .boundedTo(d->extension->maximumSize())); if (d->orientation == Qt::Horizontal) { int h = qMax(height(), s.height()); d->extension->setGeometry(width(), 0, s.width(), h); setFixedSize(width() + s.width(), h); } else { int w = qMax(width(), s.width()); d->extension->setGeometry(0, height(), w, s.height()); setFixedSize(w, height() + s.height()); } d->extension->show(); #if QT_CONFIG(sizegrip) const bool sizeGripEnabled = isSizeGripEnabled(); setSizeGripEnabled(false); d->sizeGripEnabled = sizeGripEnabled; #endif } else { d->extension->hide(); // workaround for CDE window manager that won't shrink with (-1,-1) setMinimumSize(d->min.expandedTo(QSize(1, 1))); setMaximumSize(d->max); resize(d->size); if (layout()) layout()->setEnabled(true); #if QT_CONFIG(sizegrip) setSizeGripEnabled(d->sizeGripEnabled); #endif } } /*! \reimp */ QSize QDialog::sizeHint() const { Q_D(const QDialog); if (d->extension) { if (d->orientation == Qt::Horizontal) return QSize(QWidget::sizeHint().width(), qMax(QWidget::sizeHint().height(),d->extension->sizeHint().height())); else return QSize(qMax(QWidget::sizeHint().width(), d->extension->sizeHint().width()), QWidget::sizeHint().height()); } return QWidget::sizeHint(); } /*! \reimp */ QSize QDialog::minimumSizeHint() const { Q_D(const QDialog); if (d->extension) { if (d->orientation == Qt::Horizontal) return QSize(QWidget::minimumSizeHint().width(), qMax(QWidget::minimumSizeHint().height(), d->extension->minimumSizeHint().height())); else return QSize(qMax(QWidget::minimumSizeHint().width(), d->extension->minimumSizeHint().width()), QWidget::minimumSizeHint().height()); } return QWidget::minimumSizeHint(); } /*! \property QDialog::modal \brief whether show() should pop up the dialog as modal or modeless By default, this property is \c false and show() pops up the dialog as modeless. Setting this property to true is equivalent to setting QWidget::windowModality to Qt::ApplicationModal. exec() ignores the value of this property and always pops up the dialog as modal. \sa QWidget::windowModality, show(), exec() */ void QDialog::setModal(bool modal) { setAttribute(Qt::WA_ShowModal, modal); } bool QDialog::isSizeGripEnabled() const { #if QT_CONFIG(sizegrip) Q_D(const QDialog); return !!d->resizer; #else return false; #endif } void QDialog::setSizeGripEnabled(bool enabled) { #if !QT_CONFIG(sizegrip) Q_UNUSED(enabled); #else Q_D(QDialog); #if QT_CONFIG(sizegrip) d->sizeGripEnabled = enabled; if (enabled && d->doShowExtension) return; #endif if (!enabled != !d->resizer) { if (enabled) { d->resizer = new QSizeGrip(this); // adjustSize() processes all events, which is suboptimal d->resizer->resize(d->resizer->sizeHint()); if (isRightToLeft()) d->resizer->move(rect().bottomLeft() -d->resizer->rect().bottomLeft()); else d->resizer->move(rect().bottomRight() -d->resizer->rect().bottomRight()); d->resizer->raise(); d->resizer->show(); } else { delete d->resizer; d->resizer = 0; } } #endif // QT_CONFIG(sizegrip) } /*! \reimp */ void QDialog::resizeEvent(QResizeEvent *) { #if QT_CONFIG(sizegrip) Q_D(QDialog); if (d->resizer) { if (isRightToLeft()) d->resizer->move(rect().bottomLeft() -d->resizer->rect().bottomLeft()); else d->resizer->move(rect().bottomRight() -d->resizer->rect().bottomRight()); d->resizer->raise(); } #endif } /*! \fn void QDialog::finished(int result) \since 4.1 This signal is emitted when the dialog's \a result code has been set, either by the user or by calling done(), accept(), or reject(). Note that this signal is \e not emitted when hiding the dialog with hide() or setVisible(false). This includes deleting the dialog while it is visible. \sa accepted(), rejected() */ /*! \fn void QDialog::accepted() \since 4.1 This signal is emitted when the dialog has been accepted either by the user or by calling accept() or done() with the QDialog::Accepted argument. Note that this signal is \e not emitted when hiding the dialog with hide() or setVisible(false). This includes deleting the dialog while it is visible. \sa finished(), rejected() */ /*! \fn void QDialog::rejected() \since 4.1 This signal is emitted when the dialog has been rejected either by the user or by calling reject() or done() with the QDialog::Rejected argument. Note that this signal is \e not emitted when hiding the dialog with hide() or setVisible(false). This includes deleting the dialog while it is visible. \sa finished(), accepted() */ QT_END_NAMESPACE #include "moc_qdialog.cpp"