C++ QWidget::isActiveWindow方法代码示例

void TransparentPlugin::setState()
{
    QWidget *main = getMainWindow();
    if (main == NULL)
        return;
#ifdef WIN32
    if (timer == NULL){
        timer = new QTimer(this);
        connect(timer, SIGNAL(timeout()), this, SLOT(tick()));
        main->installEventFilter(this);
        SetWindowLongW(main->winId(), GWL_EXSTYLE, GetWindowLongW(main->winId(), GWL_EXSTYLE) | WS_EX_LAYERED);
        SetLayeredWindowAttributes(main->winId(), main->colorGroup().background().rgb(), 0, LWA_ALPHA);
        RedrawWindow(main->winId(), NULL, NULL, RDW_UPDATENOW);
        main->setMouseTracking(true);
        m_bState = !main->isActiveWindow();
    }
    bool bNewState = main->isActiveWindow();
    if (bNewState == m_bState){
        BYTE d = bNewState ? 255 : QMIN((100 - getTransparency()) * 256 / 100, 255);
        SetLayeredWindowAttributes(main->winId(), main->colorGroup().background().rgb(), d, LWA_ALPHA);
        return;
    }
    m_bState = bNewState;
    startTime = GetTickCount();
    timer->start(10);
#else
    if (top == NULL)
        top = new TransparentTop(main, getTransparency());
    top->setTransparent(getTransparency());
#endif
}

void WindowMenu::onAboutToShow()
{
   QWidget* win = QApplication::activeWindow();
   pMinimize_->setEnabled(win);
   pZoom_->setEnabled(win && win->maximumSize() != win->minimumSize());
   pBringAllToFront_->setEnabled(win);


   for (int i = windows_.size() - 1; i >= 0; i--)
   {
      QAction* pAction = windows_[i];
      removeAction(pAction);
      windows_.removeAt(i);
      pAction->deleteLater();
   }

   QWidgetList topLevels = QApplication::topLevelWidgets();
   for (int i = 0; i < topLevels.size(); i++)
   {
      QWidget* pWindow = topLevels.at(i);
      if (!pWindow->isVisible())
         continue;

      QAction* pAction = new QAction(pWindow->windowTitle(), pWindow);
      pAction->setData(QVariant::fromValue(pWindow));
      pAction->setCheckable(true);
      if (pWindow->isActiveWindow())
         pAction->setChecked(true);
      insertAction(pWindowPlaceholder_, pAction);
      connect(pAction, SIGNAL(triggered()),
              this, SLOT(showWindow()));

      windows_.append(pAction);
   }
}

/*! \reimp */
QAccessible::State QAccessibleWidget::state(int child) const
{
    if (child)
        return Normal;

    QAccessible::State state = Normal;

    QWidget *w = widget();
    if (w->testAttribute(Qt::WA_WState_Visible) == false)
        state |= Invisible;
    if (w->focusPolicy() != Qt::NoFocus && w->isActiveWindow())
        state |= Focusable;
    if (w->hasFocus())
        state |= Focused;
    if (!w->isEnabled())
        state |= Unavailable;
    if (w->isWindow()) {
        if (w->windowFlags() & Qt::WindowSystemMenuHint)
            state |= Movable;
        if (w->minimumSize() != w->maximumSize())
            state |= Sizeable;
    }

    return state;
}

bool QPropertyDelegate::eventFilter(QObject *object, QEvent *event)
{
    QWidget *editor = ::qobject_cast<QWidget*>(object);

    if(!editor)
        return false;

    GD_ASSERT(editor == mActiveEditor);

    if(event->type() == QEvent::KeyPress) 
    {
        switch(static_cast<QKeyEvent *>(event)->key()) 
        {
        case Qt::Key_Tab:
            emit commitData(editor);
            emit closeEditor(editor, QAbstractItemDelegate::EditNextItem);
            mActiveEditor = 0;
            return true;
        case Qt::Key_Backtab:
            emit commitData(editor);
            emit closeEditor(editor, QAbstractItemDelegate::EditPreviousItem);
            mActiveEditor = 0;
            return true;
        case Qt::Key_Enter:
        case Qt::Key_Return:
            emit commitData(editor);
            emit closeEditor(editor, QAbstractItemDelegate::SubmitModelCache);
            mActiveEditor = 0;
            return true;
        case Qt::Key_Escape:
            // don't commit data
            emit closeEditor(editor, QAbstractItemDelegate::RevertModelCache);
            mActiveEditor = 0;
            return true;
        default:
            break;
        }
    } 
    else if(event->type() == QEvent::FocusOut && !editor->isActiveWindow()) 
    {
#ifndef QT_NO_DRAGANDDROP
        // The window may loose focus during an drag operation.
        // i.e when dragging involves the task bar on Windows.
        //if(QDragManager::self() && QDragManager::self()->object != 0)
        //    return false;
#endif
        if( QApplication::activeModalWidget() && QApplication::activeModalWidget()->parent() == editor )
            return true;

        emit commitData(editor);
        emit closeEditor(editor, NoHint);
        mActiveEditor = 0;
        return true;
    }

    return false;
}

bool TabWidget::isActiveChatWindow()
{
  QWidget *widget = m_self->parentWidget();
  if (widget->isMinimized() || widget->isHidden())
    return false;

# if defined(Q_OS_WIN32)
  if (widget->isActiveWindow()) {
    HWND active = GetForegroundWindow();
    if (active == (HWND) widget->window()->internalWinId() || ::IsChild(active, (HWND) widget->window()->internalWinId()))
      return true;
    else
      return false;
  }
  else
    return false;
# else
  return widget->isActiveWindow();
# endif
}

void tst_QWindowContainer::testActivation()
{
    QWidget root;

    QWindow *window = new QWindow();
    QWidget *container = QWidget::createWindowContainer(window, &root);

    container->setGeometry(100, 100, 200, 100);
    root.setGeometry(100, 100, 400, 300);

    root.show();
    root.activateWindow();
    QVERIFY(QTest::qWaitForWindowExposed(&root));

    QVERIFY(QTest::qWaitForWindowActive(root.windowHandle()));
    QVERIFY(QGuiApplication::focusWindow() == root.windowHandle());

    // Verify that all states in the root widget indicate it is active
    QVERIFY(root.windowHandle()->isActive());
    QVERIFY(root.isActiveWindow());
    QCOMPARE(root.palette().currentColorGroup(), QPalette::Active);

    // Under KDE (ubuntu 12.10), we experience that doing two activateWindow in a row
    // does not work. The second gets ignored by the window manager, even though the
    // timestamp in the xcb connection is unique for both.
    if (QGuiApplication::platformName() == "xcb")
        QTest::qWait(100);

    window->requestActivate();
    QTRY_VERIFY(QGuiApplication::focusWindow() == window);

    // Verify that all states in the root widget still indicate it is active
    QVERIFY(root.windowHandle()->isActive());
    QVERIFY(root.isActiveWindow());
    QCOMPARE(root.palette().currentColorGroup(), QPalette::Active);
}

void TransparentTop::transparentChanged()
{
#ifdef WIN32
    QWidget *p = static_cast<QWidget*>(parent());
    bool bTransparent = true;
    if (pMain->TransparentIfInactive) bTransparent = !p->isActiveWindow();
    setTransparent(p, useTransparent && bTransparent, transparent);
#endif
#if defined(USE_KDE) && defined(HAVE_KROOTPIXMAP_H)
    if (useTransparent){
        rootpixmap->start();
    }else{
        rootpixmap->stop();
        saveBG = QPixmap();
        genBG = QPixmap();
        genFade = 0;
        emit backgroundUpdated();
    }
#endif
}

/*! \reimp */
QAccessible::State QAccessibleWidget::state() const
{
    QAccessible::State state;

    QWidget *w = widget();
    if (w->testAttribute(Qt::WA_WState_Visible) == false)
        state.invisible = true;
    if (w->focusPolicy() != Qt::NoFocus)
        state.focusable = true;
    if (w->hasFocus())
        state.focused = true;
    if (!w->isEnabled())
        state.disabled = true;
    if (w->isWindow()) {
        if (w->windowFlags() & Qt::WindowSystemMenuHint)
            state.movable = true;
        if (w->minimumSize() != w->maximumSize())
            state.sizeable = true;
        if (w->isActiveWindow())
            state.active = true;
    }

    return state;
}

void QWidgetWindow::handleMouseEvent(QMouseEvent *event)
{
    static const QEvent::Type contextMenuTrigger =
        QGuiApplicationPrivate::platformTheme()->themeHint(QPlatformTheme::ContextMenuOnMouseRelease).toBool() ?
        QEvent::MouseButtonRelease : QEvent::MouseButtonPress;
    if (qApp->d_func()->inPopupMode()) {
        QWidget *activePopupWidget = qApp->activePopupWidget();
        QWidget *popup = activePopupWidget;
        QPoint mapped = event->pos();
        if (popup != m_widget)
            mapped = popup->mapFromGlobal(event->globalPos());
        bool releaseAfter = false;
        QWidget *popupChild  = popup->childAt(mapped);

        if (popup != qt_popup_down) {
            qt_button_down = 0;
            qt_popup_down = 0;
        }

        switch (event->type()) {
        case QEvent::MouseButtonPress:
        case QEvent::MouseButtonDblClick:
            qt_button_down = popupChild;
            qt_popup_down = popup;
            break;
        case QEvent::MouseButtonRelease:
            releaseAfter = true;
            break;
        default:
            break; // nothing for mouse move
        }

        int oldOpenPopupCount = openPopupCount;

        if (popup->isEnabled()) {
            // deliver event
            qt_replay_popup_mouse_event = false;
            QWidget *receiver = popup;
            QPoint widgetPos = mapped;
            if (qt_button_down)
                receiver = qt_button_down;
            else if (popupChild)
                receiver = popupChild;
            if (receiver != popup)
                widgetPos = receiver->mapFromGlobal(event->globalPos());
            QWidget *alien = m_widget->childAt(m_widget->mapFromGlobal(event->globalPos()));
            QMouseEvent e(event->type(), widgetPos, event->windowPos(), event->screenPos(), event->button(), event->buttons(), event->modifiers());
            QGuiApplicationPrivate::setMouseEventSource(&e, QGuiApplicationPrivate::mouseEventSource(event));
            e.setTimestamp(event->timestamp());
            QApplicationPrivate::sendMouseEvent(receiver, &e, alien, m_widget, &qt_button_down, qt_last_mouse_receiver);
        } else {
            // close disabled popups when a mouse button is pressed or released
            switch (event->type()) {
            case QEvent::MouseButtonPress:
            case QEvent::MouseButtonDblClick:
            case QEvent::MouseButtonRelease:
                popup->close();
                break;
            default:
                break;
            }
        }

        if (qApp->activePopupWidget() != activePopupWidget
            && qt_replay_popup_mouse_event) {
            if (m_widget->windowType() != Qt::Popup)
                qt_button_down = 0;
            if (event->type() == QEvent::MouseButtonPress) {
                // the popup disappeared, replay the mouse press event
                QWidget *w = QApplication::widgetAt(event->globalPos());
                if (w && !QApplicationPrivate::isBlockedByModal(w)) {
                    // activate window of the widget under mouse pointer
                    if (!w->isActiveWindow()) {
                        w->activateWindow();
                        w->raise();
                    }

                    QWindow *win = w->windowHandle();
                    if (!win)
                        win = w->nativeParentWidget()->windowHandle();
                    if (win && win->geometry().contains(event->globalPos())) {
                        const QPoint localPos = win->mapFromGlobal(event->globalPos());
                        QMouseEvent e(QEvent::MouseButtonPress, localPos, localPos, event->globalPos(), event->button(), event->buttons(), event->modifiers());
                        QGuiApplicationPrivate::setMouseEventSource(&e, QGuiApplicationPrivate::mouseEventSource(event));
                        e.setTimestamp(event->timestamp());
                        QApplication::sendSpontaneousEvent(win, &e);
                    }
                }
            }
            qt_replay_popup_mouse_event = false;
#ifndef QT_NO_CONTEXTMENU
        } else if (event->type() == contextMenuTrigger
                   && event->button() == Qt::RightButton
                   && (openPopupCount == oldOpenPopupCount)) {
            QWidget *popupEvent = popup;
            if (qt_button_down)
                popupEvent = qt_button_down;
            else if(popupChild)
                popupEvent = popupChild;
            QContextMenuEvent e(QContextMenuEvent::Mouse, mapped, event->globalPos(), event->modifiers());
//.........这里部分代码省略.........

QString qt_mac_get_save_file_name(const QFileDialogArgs &args, QString *pwd,
                                  QString *selectedFilter)
{
    QWidget *parent = args.parent;
    OSErr err;
    QString retstr;
    NavDialogCreationOptions options;
    NavGetDefaultDialogCreationOptions(&options);
    static const int w = 450, h = 350;
    if (args.options & QFileDialog::DontConfirmOverwrite)
        options.optionFlags |= kNavDontConfirmReplacement;
    options.modality = kWindowModalityAppModal;
    options.location.h = options.location.v = -1;
    if (!args.directory.isEmpty())
        options.saveFileName = QCFString::toCFStringRef(args.selection);
    if (!args.caption.isEmpty())
        options.windowTitle = QCFString::toCFStringRef(args.caption);
    if (parent && parent->isVisible()) {
        WindowClass wclass;
        GetWindowClass(qt_mac_window_for(parent), &wclass);
        if (!(args.options & QFileDialog::DontUseSheet) && (wclass == kDocumentWindowClass ||
                                                            wclass == kFloatingWindowClass || wclass == kMovableModalWindowClass)) {
            options.modality = kWindowModalityWindowModal;
            options.parentWindow = qt_mac_window_for(parent);

            // The parent needs to be active for the sheet to get keyboard focus.
            if (!parent->isActiveWindow())
                parent->activateWindow();
        } else {
            parent = parent->window();
            QString s = parent->windowTitle();
            options.clientName = CFStringCreateWithCharacters(0, (UniChar *)s.unicode(), s.length());
            options.location.h = (parent->x() + (parent->width() / 2)) - (w / 2);
            options.location.v = (parent->y() + (parent->height() / 2)) - (h / 2);

            QRect r = QApplication::desktop()->screenGeometry(
                QApplication::desktop()->screenNumber(parent));
            if (options.location.h + w > r.right())
                options.location.h -= (options.location.h + w) - r.right() + 10;
            if (options.location.v + h > r.bottom())
                options.location.v -= (options.location.v + h) - r.bottom() + 10;
        }
#if 0
    } else if (QWidget *p = qApp->mainWidget()) {
        static int last_screen = -1;
        int scr = QApplication::desktop()->screenNumber(p);
        if (last_screen != scr) {
            QRect r = QApplication::desktop()->screenGeometry(scr);
            options.location.h = (r.x() + (r.width() / 2)) - (w / 2);
            options.location.v = (r.y() + (r.height() / 2)) - (h / 2);
        }
#endif
    }

    QList<qt_mac_filter_name*> filts = qt_mac_make_filters_list(args.filter);
    qt_mac_nav_filter_type t;
    t.saveDialog = true;
    t.index = 0;
    t.filts = &filts;
    if (filts.count() > 1) {
        int i = 0;
        CFStringRef *arr = static_cast<CFStringRef *>(malloc(sizeof(CFStringRef) * filts.count()));
        for (QList<qt_mac_filter_name*>::const_iterator it = filts.constBegin();
             it != filts.constEnd(); ++it)
            arr[i++] = QCFString::toCFStringRef((*it)->description);
        options.popupExtension = CFArrayCreate(0, reinterpret_cast<const void **>(arr), filts.count(), 0);
    }

    NavDialogRef dlg;
    if (NavCreatePutFileDialog(&options, 'cute', kNavGenericSignature, make_navProcUPP(),
                               static_cast<void *>(filts.isEmpty() ? 0 : &t), &dlg)) {
        qDebug("Shouldn't happen %s:%d", __FILE__, __LINE__);
        return retstr;
    }
    if (pwd && !pwd->isEmpty()) {
        FSRef fsref;
        if (qt_mac_create_fsref(*pwd, &fsref) == noErr) {
            AEDesc desc;
            if (AECreateDesc(typeFSRef, &fsref, sizeof(FSRef), &desc) == noErr)
                NavCustomControl(dlg, kNavCtlSetLocation, (void*)&desc);
        }
    }
    NavDialogRun(dlg);
    if (selectedFilter) {
        NavMenuItemSpec navSpec;
        bzero(&navSpec, sizeof(NavMenuItemSpec));
        qt_mac_filter_name *sel_filt_name = qt_mac_make_filters_list(*selectedFilter).at(0);
        for (int i = 0; i < filts.count(); ++i) {
            const qt_mac_filter_name *filter = filts.at(i);
            if (sel_filt_name->description == filter->description
                    && sel_filt_name->regxp == filter->regxp
                    && sel_filt_name->filter == filter->filter) {
                navSpec.menuType = i;
                break;
            }
        }
        NavCustomControl(dlg, kNavCtlSelectCustomType, &navSpec);
    }
    if (options.modality == kWindowModalityWindowModal) { //simulate modality
        QWidget modal_widg(parent, Qt::Sheet);
//.........这里部分代码省略.........

bool CFileListItemDelegate::eventFilter(QObject * object, QEvent * event)
{
	QWidget *editor = qobject_cast<QWidget*>(object);
	if (!editor)
		return false;

	if (event->type() == QEvent::KeyPress)
	{
		switch (static_cast<QKeyEvent *>(event)->key())
		{
		case Qt::Key_Tab:
			emit closeEditor(editor, EditNextItem);
			return true;
		case Qt::Key_Backtab:
			emit closeEditor(editor, EditPreviousItem);
			return true;
		case Qt::Key_Enter: // Numpad Enter
		case Qt::Key_Return:
			// don't filter enter key events for QTextEdit
			if (!qobject_cast<QTextEdit *>(editor) && !qobject_cast<QPlainTextEdit*>(editor))
			{
				// commit data
				emit commitData(editor);
				emit closeEditor(editor);
				return true;
			}

			return QStyledItemDelegate::eventFilter(object, event);
		case Qt::Key_Escape:
			// don't commit data
			emit closeEditor(editor, QAbstractItemDelegate::RevertModelCache);
			return true;
		case Qt::Key_Up:
		case Qt::Key_Down:
			// don't commit data
			emit closeEditor(editor, QAbstractItemDelegate::RevertModelCache);
			// Don't consume the event so that the TreeView will handle this event and highlight the next item properly
			return QStyledItemDelegate::eventFilter(object, event);
		default:
			return QStyledItemDelegate::eventFilter(object, event);
		}
	}
	else if (event->type() == QEvent::FocusOut || (event->type() == QEvent::Hide && editor->isWindow()))
	{
		//the Hide event will take care of he editors that are in fact complete dialogs
		if (!editor->isActiveWindow() || (QApplication::focusWidget() != editor))
		{
			QWidget *w = QApplication::focusWidget();
			while (w)
			{ // don't worry about focus changes internally in the editor
				if (w == editor)
					return QStyledItemDelegate::eventFilter(object, event);

				w = w->parentWidget();
			}

			emit closeEditor(editor, NoHint);
		}
	}
	else if (event->type() == QEvent::ShortcutOverride)
	{
		if (static_cast<QKeyEvent*>(event)->key() == Qt::Key_Escape)
		{
			event->accept();
			return true;
		}
	}

	return QStyledItemDelegate::eventFilter(object, event);
}

void QWidgetWindow::handleMouseEvent(QMouseEvent *event)
{
    static const QEvent::Type contextMenuTrigger =
        QGuiApplicationPrivate::platformTheme()->themeHint(QPlatformTheme::ContextMenuOnMouseRelease).toBool() ?
        QEvent::MouseButtonRelease : QEvent::MouseButtonPress;
    if (qApp->d_func()->inPopupMode()) {
        QWidget *activePopupWidget = qApp->activePopupWidget();
        QPoint mapped = event->pos();
        if (activePopupWidget != m_widget)
            mapped = activePopupWidget->mapFromGlobal(event->globalPos());
        bool releaseAfter = false;
        QWidget *popupChild  = activePopupWidget->childAt(mapped);

        if (activePopupWidget != qt_popup_down) {
            qt_button_down = 0;
            qt_popup_down = 0;
        }

        switch (event->type()) {
        case QEvent::MouseButtonPress:
        case QEvent::MouseButtonDblClick:
            qt_button_down = popupChild;
            qt_popup_down = activePopupWidget;
            break;
        case QEvent::MouseButtonRelease:
            releaseAfter = true;
            break;
        default:
            break; // nothing for mouse move
        }

        int oldOpenPopupCount = openPopupCount;

        if (activePopupWidget->isEnabled()) {
            // deliver event
            qt_replay_popup_mouse_event = false;
            QWidget *receiver = activePopupWidget;
            QPoint widgetPos = mapped;
            if (qt_button_down)
                receiver = qt_button_down;
            else if (popupChild)
                receiver = popupChild;
            if (receiver != activePopupWidget)
                widgetPos = receiver->mapFromGlobal(event->globalPos());
            QWidget *alien = receiver;

#if !defined(Q_OS_OSX) && !defined(Q_OS_IOS) // Cocoa tracks popups
            const bool reallyUnderMouse = activePopupWidget->rect().contains(mapped);
            const bool underMouse = activePopupWidget->underMouse();
            if (activePopupWidget != m_widget || (!underMouse && qt_button_down)) {
                // If active popup menu is not the first-level popup menu then we must emulate enter/leave events,
                // because first-level popup menu grabs the mouse and enter/leave events are delivered only to it
                // by QPA. Make an exception for first-level popup menu when the mouse button is pressed on widget.
                if (underMouse != reallyUnderMouse) {
                    if (reallyUnderMouse) {
                        QApplicationPrivate::dispatchEnterLeave(receiver, Q_NULLPTR, event->screenPos());
                        qt_last_mouse_receiver = receiver;
                    } else {
                        QApplicationPrivate::dispatchEnterLeave(Q_NULLPTR, qt_last_mouse_receiver, event->screenPos());
                        qt_last_mouse_receiver = receiver;
                        receiver = activePopupWidget;
                    }
                }
            } else if (!reallyUnderMouse) {
                alien = Q_NULLPTR;
            }
#endif

            QMouseEvent e(event->type(), widgetPos, event->windowPos(), event->screenPos(),
                          event->button(), event->buttons(), event->modifiers(), event->source());
            e.setTimestamp(event->timestamp());
            QApplicationPrivate::sendMouseEvent(receiver, &e, alien, receiver->window(), &qt_button_down, qt_last_mouse_receiver);
            qt_last_mouse_receiver = receiver;
        } else {
            // close disabled popups when a mouse button is pressed or released
            switch (event->type()) {
            case QEvent::MouseButtonPress:
            case QEvent::MouseButtonDblClick:
            case QEvent::MouseButtonRelease:
                activePopupWidget->close();
                break;
            default:
                break;
            }
        }

        if (qApp->activePopupWidget() != activePopupWidget
            && qt_replay_popup_mouse_event
            && QGuiApplicationPrivate::platformIntegration()->styleHint(QPlatformIntegration::ReplayMousePressOutsidePopup).toBool()) {
            if (m_widget->windowType() != Qt::Popup)
                qt_button_down = 0;
            if (event->type() == QEvent::MouseButtonPress) {
                // the popup disappeared, replay the mouse press event
                QWidget *w = QApplication::widgetAt(event->globalPos());
                if (w && !QApplicationPrivate::isBlockedByModal(w)) {
                    // activate window of the widget under mouse pointer
                    if (!w->isActiveWindow()) {
                        w->activateWindow();
                        w->raise();
                    }
//.........这里部分代码省略.........