C++ QAction::setParent方法代码示例

void MainWindow::menuSessionsAboutToShow()
{
	if (m_sessionsGroup)
	{
		m_sessionsGroup->deleteLater();

		QAction *saveSessionAction = m_ui->menuSessions->actions().at(0);
		saveSessionAction->setParent(this);

		QAction *manageSessionsAction = m_ui->menuSessions->actions().at(1);
		manageSessionsAction->setParent(this);

		m_ui->menuSessions->clear();
		m_ui->menuSessions->addAction(saveSessionAction);
		m_ui->menuSessions->addAction(manageSessionsAction);
		m_ui->menuSessions->addSeparator();
	}

	m_sessionsGroup = new QActionGroup(this);
	m_sessionsGroup->setExclusive(true);

	const QStringList sessions = SessionsManager::getSessions();
	QMultiHash<QString, SessionInformation> information;

	for (int i = 0; i < sessions.count(); ++i)
	{
		const SessionInformation session = SessionsManager::getSession(sessions.at(i));

		information.insert((session.title.isEmpty() ? tr("(Untitled)") : session.title), session);
	}

	const QList<SessionInformation> sorted = information.values();
	const QString currentSession = SessionsManager::getCurrentSession();

	for (int i = 0; i < sorted.count(); ++i)
	{
		int windows = 0;

		for (int j = 0; j < sorted.at(i).windows.count(); ++j)
		{
			windows += sorted.at(i).windows.at(j).windows.count();
		}

		QAction *action = m_ui->menuSessions->addAction(tr("%1 (%n tab(s))", "", windows).arg(sorted.at(i).title.isEmpty() ? tr("(Untitled)") : QString(sorted.at(i).title).replace(QLatin1Char('&'), QLatin1String("&&"))));
		action->setData(sorted.at(i).path);
		action->setCheckable(true);
		action->setChecked(sorted.at(i).path == currentSession);

		m_sessionsGroup->addAction(action);
	}
}

void KUrlNavigatorPlacesSelector::updateTeardownAction()
{
    const int rowCount = m_placesModel->rowCount();
    if (m_placesMenu->actions().size() == rowCount + 2) {
        // remove teardown action
        QAction *action = m_placesMenu->actions().at(rowCount + 1);
        m_placesMenu->removeAction(action);
        delete action;

        // remove separator
        action = m_placesMenu->actions().at(rowCount);
        m_placesMenu->removeAction(action);
        delete action;
    }

    const QModelIndex index = m_placesModel->index(m_selectedItem, 0);
    QAction *teardown = m_placesModel->teardownActionForIndex(index);
    if (teardown != 0) {
        teardown->setParent(m_placesMenu);
        teardown->setData("teardownAction");

        m_placesMenu->addSeparator();
        m_placesMenu->addAction(teardown);
    }
}

void QCastViewGL::getToolbars(CPtrVector<QToolBar>& toolbars)
{
   if (! pView) return;
   CPtrVector<cogx::display::CDisplayCamera> cameras;
   pView->getCameras(cameras);
   if (cameras.size() < 1) return;
   // pBar->parent will be reset in QViewContainer
   QToolBar *pBar = new QToolBar(QString::fromStdString(pView->m_id), this);
   if (pBar) {
      unsigned int nc = cameras.size();
      if (nc > 3) nc = 3;
      cogx::display::CDisplayCamera* pCamera;
      for (unsigned int i= 0; i < nc; i++) {
         QToolButton *pBut = new QToolButton(pBar);
         pCamera = cameras[i];
         QString text = QString::fromStdString(pCamera->name);
         QAction* pAct = new QAction(QIcon(":/toolButton/camera-photo.png"), text, pBut);
         pAct->setToolTip("Select Camera: " + text);
         pAct->setData(qVariantFromValue((void*)pCamera));
         pBut->setDefaultAction(pAct);
         pBar->addWidget(pBut);
         pBar->connect(pAct, SIGNAL(triggered()), this, SLOT(onCameraChangeAction()));

         // With more than 3 cameras things become complicated...
         if (i == 2 && cameras.size() > 2) {
            QAction *pPopAct;
            QMenu *pMenu = new QMenu(pBut); // parent MUST be button, see onCameraChangeAction
            pBut->setMenu(pMenu);
            pBut->setPopupMode(QToolButton::MenuButtonPopup);

            for (unsigned int j = 0; j < cameras.size(); j++) {
               if (i == j) {
                  pMenu->addAction(pAct);
                  pAct->setParent(pMenu);   // parent MUST be menu, see onCameraChangeAction
               }
               else {
                  pCamera = cameras[j];
                  text = QString::fromStdString(pCamera->name);
                  pPopAct = pMenu->addAction(QIcon(":/toolButton/camera-photo.png"), text);
                  pPopAct->setData(qVariantFromValue((void*)pCamera));
                  pPopAct->setToolTip("Select Camera: " + text);
                  pBar->connect(pPopAct, SIGNAL(triggered()), this, SLOT(onCameraChangeAction()));
               }
            }

            if (0) {
               text = "TODO: Configure camera buttons...";
               pPopAct = pMenu->addAction(QIcon(":/toolButton/camera-photo.png"), text);
               pBar->connect(pPopAct, SIGNAL(triggered()), this, SLOT(onActConfigureCameras()));
            }
         }
      }
      toolbars.push_back(pBar);
   }
}

Command *ActionManagerPrivate::registerOverridableAction(QAction *action, const QString &id, bool checkUnique)
{
    OverrideableAction *a = 0;
    const int uid = UniqueIDManager::instance()->uniqueIdentifier(id);

    if (CommandPrivate * c = m_idCmdMap.value(uid, 0)) {
        a = qobject_cast<OverrideableAction *>(c);
        if (!a) {
            qWarning() << "registerAction: id" << id << "is registered with a different command type.";
            return c;
        }
    } else {
        a = new OverrideableAction(uid);
        m_idCmdMap.insert(uid, a);
    }

    if (!a->action()) {
        QAction *baseAction = new QAction(m_mainWnd);
        baseAction->setObjectName(id);
        baseAction->setCheckable(action->isCheckable());
        baseAction->setIcon(action->icon());
        baseAction->setIconText(action->iconText());
        baseAction->setText(action->text());
        baseAction->setToolTip(action->toolTip());
        baseAction->setStatusTip(action->statusTip());
        baseAction->setWhatsThis(action->whatsThis());
        baseAction->setChecked(action->isChecked());
        baseAction->setSeparator(action->isSeparator());
        baseAction->setShortcutContext(Qt::ApplicationShortcut);
        baseAction->setEnabled(false);
        baseAction->setParent(m_mainWnd);
#ifdef Q_WS_MAC
        baseAction->setIconVisibleInMenu(false);
#endif
        a->setAction(baseAction);
        m_mainWnd->addAction(baseAction);
        a->setKeySequence(a->keySequence());
        a->setDefaultKeySequence(QKeySequence());
    } else if (checkUnique) {
        qWarning() << "registerOverridableAction: id" << id << "is already registered.";
    }

    return a;
}

void ImageViewer::contextMenuEvent(QContextMenuEvent *event) {
  if (!m_flipbook) return;

  QAction *action;

  if (m_isColorModel) {
    event->ignore();
    return;
  }

  QMenu *menu = new QMenu(this);

  if (m_flipbook->getPreviewedFx()) {
    if (!(windowState() & Qt::WindowFullScreen)) {
      action = menu->addAction(tr("Clone Preview"));
      action->setShortcut(QKeySequence(
          CommandManager::instance()->getKeyFromId(MI_ClonePreview)));
      connect(action, SIGNAL(triggered()), m_flipbook, SLOT(clonePreview()));
    }

    if (m_flipbook->isFreezed()) {
      action = menu->addAction(tr("Unfreeze Preview"));
      action->setShortcut(QKeySequence(
          CommandManager::instance()->getKeyFromId(MI_FreezePreview)));
      connect(action, SIGNAL(triggered()), m_flipbook, SLOT(unfreezePreview()));
    } else {
      action = menu->addAction(tr("Freeze Preview"));
      action->setShortcut(QKeySequence(
          CommandManager::instance()->getKeyFromId(MI_FreezePreview)));
      connect(action, SIGNAL(triggered()), m_flipbook, SLOT(freezePreview()));
    }

    action = menu->addAction(tr("Regenerate Preview"));
    action->setShortcut(QKeySequence(
        CommandManager::instance()->getKeyFromId(MI_RegeneratePreview)));
    connect(action, SIGNAL(triggered()), m_flipbook, SLOT(regenerate()));

    action = menu->addAction(tr("Regenerate Frame Preview"));
    action->setShortcut(QKeySequence(
        CommandManager::instance()->getKeyFromId(MI_RegenerateFramePr)));
    connect(action, SIGNAL(triggered()), m_flipbook, SLOT(regenerateFrame()));

    menu->addSeparator();
  }

  action = menu->addAction(tr("Load / Append Images"));
  connect(action, SIGNAL(triggered()), m_flipbook, SLOT(loadImages()));

  // history of the loaded paths of flipbook
  action = CommandManager::instance()->getAction(MI_LoadRecentImage);
  menu->addAction(action);
  action->setParent(m_flipbook);

  if (m_flipbook->isSavable()) {
    action = menu->addAction(tr("Save Images"));
    connect(action, SIGNAL(triggered()), m_flipbook, SLOT(saveImages()));
  }
  menu->addSeparator();

  QAction *reset = menu->addAction(tr("Reset View"));
  reset->setShortcut(
      QKeySequence(CommandManager::instance()->getKeyFromId(V_ZoomReset)));
  connect(reset, SIGNAL(triggered()), SLOT(resetView()));

  QAction *fit = menu->addAction(tr("Fit To Window"));
  fit->setShortcut(
      QKeySequence(CommandManager::instance()->getKeyFromId(V_ZoomFit)));
  connect(fit, SIGNAL(triggered()), SLOT(fitView()));

#ifdef _WIN32

  if (ImageUtils::FullScreenWidget *fsWidget =
          dynamic_cast<ImageUtils::FullScreenWidget *>(parentWidget())) {
    bool isFullScreen = (fsWidget->windowState() & Qt::WindowFullScreen) != 0;

    action = menu->addAction(isFullScreen ? tr("Exit Full Screen Mode")
                                          : tr("Full Screen Mode"));

    action->setShortcut(QKeySequence(
        CommandManager::instance()->getKeyFromId(V_ShowHideFullScreen)));
    connect(action, SIGNAL(triggered()), fsWidget, SLOT(toggleFullScreen()));
  }

#endif

  bool addedSep = false;

  if (m_isHistogramEnable &&
      visibleRegion().contains(event->pos() * getDevPixRatio())) {
    menu->addSeparator();
    addedSep = true;
    action   = menu->addAction(tr("Show Histogram"));
    connect(action, SIGNAL(triggered()), SLOT(showHistogram()));
  }

  if (m_visualSettings.m_doCompare) {
    if (!addedSep) menu->addSeparator();
    action = menu->addAction(tr("Swap Compared Images"));
    connect(action, SIGNAL(triggered()), SLOT(swapCompared()));
  }
//.........这里部分代码省略.........

void PlacesPanel::slotItemContextMenuRequested(int index, const QPointF& pos)
{
    PlacesItem* item = m_model->placesItem(index);
    if (!item) {
        return;
    }

    QMenu menu(this);

    QAction* emptyTrashAction = nullptr;
    QAction* editAction = nullptr;
    QAction* teardownAction = nullptr;
    QAction* ejectAction = nullptr;

    const QString label = item->text();

    const bool isDevice = !item->udi().isEmpty();
    const bool isTrash = (item->url().scheme() == QLatin1String("trash"));
    if (isDevice) {
        ejectAction = m_model->ejectAction(index);
        if (ejectAction) {
            ejectAction->setParent(&menu);
            menu.addAction(ejectAction);
        }

        teardownAction = m_model->teardownAction(index);
        if (teardownAction) {
            teardownAction->setParent(&menu);
            menu.addAction(teardownAction);
        }

        if (teardownAction || ejectAction) {
            menu.addSeparator();
        }
    } else {
        if (isTrash) {
            emptyTrashAction = menu.addAction(QIcon::fromTheme(QStringLiteral("trash-empty")), i18nc("@action:inmenu", "Empty Trash"));
            emptyTrashAction->setEnabled(item->icon() == QLatin1String("user-trash-full"));
            menu.addSeparator();
        }
    }

    QAction* openInNewWindowAction = menu.addAction(QIcon::fromTheme("window-new"), i18nc("@item:inmenu", "Open in New Window"));
    QAction* openInNewTabAction = menu.addAction(QIcon::fromTheme("tab-new"), i18nc("@item:inmenu", "Open in New Tab"));
    if (!isDevice && !isTrash) {
        menu.addSeparator();
    }

    if (!isDevice) {
        editAction = menu.addAction(QIcon::fromTheme("document-properties"), i18nc("@item:inmenu", "Edit..."));
    }

    QAction* removeAction = nullptr;
    if (!isDevice && !item->isSystemItem()) {
        removeAction = menu.addAction(QIcon::fromTheme(QStringLiteral("edit-delete")), i18nc("@item:inmenu", "Remove"));
    }

    QAction* hideAction = menu.addAction(i18nc("@item:inmenu", "Hide"));
    hideAction->setCheckable(true);
    hideAction->setChecked(item->isHidden());

    buildGroupContextMenu(&menu, index);

    QAction* action = menu.exec(pos.toPoint());
    if (action) {
        if (action == emptyTrashAction) {
            emptyTrash();
        } else {
            // The index might have changed if devices were added/removed while
            // the context menu was open.
            index = m_model->index(item);
            if (index < 0) {
                // The item is not in the model any more, probably because it was an
                // external device that has been removed while the context menu was open.
                return;
            }

            if (action == editAction) {
                editEntry(index);
            } else if (action == removeAction) {
                m_model->deleteItem(index);
            } else if (action == hideAction) {
                item->setHidden(hideAction->isChecked());
            } else if (action == openInNewWindowAction) {
                Dolphin::openNewWindow({KFilePlacesModel::convertedUrl(m_model->data(index).value("url").toUrl())}, this);
            } else if (action == openInNewTabAction) {
                // TriggerItem does set up the storage first and then it will
                // emit the slotItemMiddleClicked signal, because of Qt::MiddleButton.
                triggerItem(index, Qt::MiddleButton);
            } else if (action == teardownAction) {
                m_model->requestTearDown(index);
            } else if (action == ejectAction) {
                m_model->requestEject(index);
            }
        }
    }

    selectClosestItem();
}

void PlacesPanel::slotItemContextMenuRequested(int index, const QPointF& pos)
{
    PlacesItem* item = m_model->placesItem(index);
    if (!item) {
        return;
    }

    QMenu menu(this);

    QAction* emptyTrashAction = 0;
    QAction* addAction = 0;
    QAction* mainSeparator = 0;
    QAction* editAction = 0;
    QAction* teardownAction = 0;
    QAction* ejectAction = 0;

    const QString label = item->text();

    const bool isDevice = !item->udi().isEmpty();
    if (isDevice) {
        ejectAction = m_model->ejectAction(index);
        if (ejectAction) {
            ejectAction->setParent(&menu);
            menu.addAction(ejectAction);
        }

        teardownAction = m_model->teardownAction(index);
        if (teardownAction) {
            teardownAction->setParent(&menu);
            menu.addAction(teardownAction);
        }

        if (teardownAction || ejectAction) {
            mainSeparator = menu.addSeparator();
        }
    } else {
        if (item->url() == QUrl(QStringLiteral("trash:/"))) {
            emptyTrashAction = menu.addAction(QIcon::fromTheme(QStringLiteral("trash-empty")), i18nc("@action:inmenu", "Empty Trash"));
            emptyTrashAction->setEnabled(item->icon() == QLatin1String("user-trash-full"));
            menu.addSeparator();
        }
        addAction = menu.addAction(QIcon::fromTheme(QStringLiteral("document-new")), i18nc("@item:inmenu", "Add Entry..."));
        mainSeparator = menu.addSeparator();
        editAction = menu.addAction(QIcon::fromTheme(QStringLiteral("document-properties")), i18nc("@item:inmenu", "Edit '%1'...", label));
    }

    if (!addAction) {
        addAction = menu.addAction(QIcon::fromTheme(QStringLiteral("document-new")), i18nc("@item:inmenu", "Add Entry..."));
    }

    QAction* openInNewTabAction = menu.addAction(i18nc("@item:inmenu", "Open '%1' in New Tab", label));
    openInNewTabAction->setIcon(QIcon::fromTheme(QStringLiteral("tab-new")));

    QAction* removeAction = 0;
    if (!isDevice && !item->isSystemItem()) {
        removeAction = menu.addAction(QIcon::fromTheme(QStringLiteral("edit-delete")), i18nc("@item:inmenu", "Remove '%1'", label));
    }

    QAction* hideAction = menu.addAction(i18nc("@item:inmenu", "Hide '%1'", label));
    hideAction->setCheckable(true);
    hideAction->setChecked(item->isHidden());

    QAction* showAllAction = 0;
    if (m_model->hiddenCount() > 0) {
        if (!mainSeparator) {
            mainSeparator = menu.addSeparator();
        }
        showAllAction = menu.addAction(i18nc("@item:inmenu", "Show All Entries"));
        showAllAction->setCheckable(true);
        showAllAction->setChecked(m_model->hiddenItemsShown());
    }

    menu.addSeparator();
    QMenu* iconSizeSubMenu = new QMenu(i18nc("@item:inmenu", "Icon Size"), &menu);

    struct IconSizeInfo
    {
        int size;
        const char* context;
        const char* text;
    };

    const int iconSizeCount = 4;
    static const IconSizeInfo iconSizes[iconSizeCount] = {
        {KIconLoader::SizeSmall,        I18N_NOOP2_NOSTRIP("Small icon size", "Small (%1x%2)")},
        {KIconLoader::SizeSmallMedium,  I18N_NOOP2_NOSTRIP("Medium icon size", "Medium (%1x%2)")},
        {KIconLoader::SizeMedium,       I18N_NOOP2_NOSTRIP("Large icon size", "Large (%1x%2)")},
        {KIconLoader::SizeLarge,        I18N_NOOP2_NOSTRIP("Huge icon size", "Huge (%1x%2)")}
    };

    QHash<QAction*, int> iconSizeActionMap;
    QActionGroup* iconSizeGroup = new QActionGroup(iconSizeSubMenu);

    for (int i = 0; i < iconSizeCount; ++i) {
        const int size = iconSizes[i].size;
        const QString text = i18nc(iconSizes[i].context, iconSizes[i].text,
                                   size, size);

        QAction* action = iconSizeSubMenu->addAction(text);
        iconSizeActionMap.insert(action, size);
//.........这里部分代码省略.........

QWidget *QFRDRTableDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem &, const QModelIndex &index) const {
    QVariant dat=index.data(Qt::DisplayRole);
    QString expression=index.data(QFRDRTable::TableExpressionRole).toString();
    if (expression.isEmpty()) {
        if (dat.type()==QVariant::Invalid) {
            dat=index.data(Qt::EditRole);
        }
         if ( dat.type() == QVariant::DateTime || dat.type() == QVariant::Time || dat.type() == QVariant::Date ) {
             QDateTimeEdit *editor = new QDateTimeEdit(parent);
             //editor->setDisplayFormat("dd/M/yyyy");
             editor->setCalendarPopup(true);
             return editor;
         }
         if ( !index.isValid() || dat.type() == QVariant::Double ) {
             QFDoubleEdit* editor=new QFDoubleEdit(parent);
             editor->setCheckBounds(false, false);
             editor->setShowUpDown(false);
             return editor;
         }
         if ( dat.type() == QVariant::Int || dat.type() == QVariant::LongLong ) {
             QSpinBox* editor=new QSpinBox(parent);
             editor->setRange(INT_MIN, INT_MAX);
             editor->setButtonSymbols(QAbstractSpinBox::NoButtons);
             return editor;
         }
         if ( dat.type() == QVariant::UInt || dat.type() == QVariant::ULongLong ) {
             QSpinBox* editor=new QSpinBox(parent);
             editor->setRange(0, UINT_MAX);
             editor->setButtonSymbols(QAbstractSpinBox::NoButtons);
             return editor;
         }
         if ( dat.type() == QVariant::Bool) {
             QCheckBox* editor=new QCheckBox(parent);
             return editor;
         }

         QLineEdit *editor = new QLineEdit(parent);

         // create a completer with the strings in the column as model
         QStringList allStrings;
         for (int i = 1; i<index.model()->rowCount(); i++) {
             QString strItem(index.model()->data(index.sibling(i, index.column()),
                 Qt::EditRole).toString());

             if (!allStrings.contains(strItem))
                 allStrings.append(strItem);
         }

         QCompleter *autoComplete = new QCompleter(allStrings);
         editor->setCompleter(autoComplete);
         connect(editor, SIGNAL(editingFinished()), this, SLOT(commitAndCloseEditor()));
         return editor;
    } else {
        QWidget* widExpression=new QWidget(parent);
        widExpression->setFocusPolicy(Qt::StrongFocus);
        widExpression->setAutoFillBackground(true);
        QHBoxLayout* layout=new QHBoxLayout();
        layout->setContentsMargins(0,0,0,0);
        layout->setSpacing(1);
        widExpression->setLayout(layout);
        QLabel* label=new QLabel(widExpression);
        layout->addWidget(label, 1);
        label->setTextFormat(Qt::RichText);
        label->setText(tr("<b><font color=\"blue\">&Sigma;:</font> %1</b><i>&nbsp;&nbsp;= %2</i>").arg(expression).arg(dat.toString()));
        label->setAutoFillBackground(true);
        QFont f=label->font();
        f.setPointSizeF(f.pointSizeF()*0.9);
        label->setFont(f);
        QAction* actEdtExp;        
        QToolButton* btnEdtExp=createButtonAndAction(actEdtExp, QIcon(":/table/formula.png"), tr("edit expression ..."), widExpression);
        actEdtExp->setParent(widExpression);
        connect(actEdtExp, SIGNAL(triggered()), this, SLOT(doEditExpression()));
        layout->addWidget(btnEdtExp);
        QAction* actClearExp;
        QToolButton* btnClearExp=createButtonAndAction(actClearExp, QIcon(":/table/formulaclear.png"), tr("clear expression ..."), widExpression);
        actClearExp->setParent(widExpression);
        connect(actClearExp, SIGNAL(triggered()), this, SLOT(doClearExpression()));
        layout->addWidget(btnClearExp);
        widExpression->setFocus();
        return widExpression;
    }
}