C++ QDesignerFormEditorInterface类代码示例

QT_BEGIN_NAMESPACE

QDesignerFormWindow::QDesignerFormWindow(QDesignerFormWindowInterface *editor, QDesignerWorkbench *workbench, QWidget *parent, Qt::WindowFlags flags)
    : QWidget(parent, flags),
      m_editor(editor),
      m_workbench(workbench),
      m_action(new QAction(this)),
      m_initialized(false),
      m_windowTitleInitialized(false)
{
    Q_ASSERT(workbench);

    setMaximumSize(0xFFF, 0xFFF);
    QDesignerFormEditorInterface *core = workbench->core();

    if (m_editor) {
        m_editor->setParent(this);
    } else {
        m_editor = core->formWindowManager()->createFormWindow(this);
    }

    QVBoxLayout *l = new QVBoxLayout(this);
    l->setMargin(0);
    l->addWidget(m_editor);

    m_action->setCheckable(true);

    connect(m_editor->commandHistory(), SIGNAL(indexChanged(int)), this, SLOT(updateChanged()));
    connect(m_editor, SIGNAL(geometryChanged()), this, SLOT(geometryChanged()));
    qdesigner_internal::FormWindowBase::setupDefaultAction(m_editor);
}

void QDesignerIntegrationPrivate::getSelection(Selection &s)
{
    QDesignerFormEditorInterface *core = q->core();
    // Get multiselection from object inspector
    if (QDesignerObjectInspector *designerObjectInspector = qobject_cast<QDesignerObjectInspector *>(core->objectInspector())) {
        designerObjectInspector->getSelection(s);
        // Action editor puts actions that are not on the form yet
        // into the property editor only.
        if (s.empty())
            if (QObject *object = core->propertyEditor()->object())
                s.objects.push_back(object);

    } else {
        // Just in case someone plugs in an old-style object inspector: Emulate selection
        s.clear();
        QDesignerFormWindowInterface *formWindow = core->formWindowManager()->activeFormWindow();
        if (!formWindow)
            return;

        QObject *object = core->propertyEditor()->object();
        if (object->isWidgetType()) {
            QWidget *widget = static_cast<QWidget*>(object);
            QDesignerFormWindowCursorInterface *cursor = formWindow->cursor();
            if (cursor->isWidgetSelected(widget)) {
                s.managed.push_back(widget);
            } else {
                s.unmanaged.push_back(widget);
            }
        } else {
            s.objects.push_back(object);
        }
    }
}

void QDesignerDockWidget::setDocked(bool b)
{
    if (QMainWindow *mainWindow = findMainWindow()) {
        QDesignerFormEditorInterface *core = formWindow()->core();
        QDesignerContainerExtension *c;
        c = qt_extension<QDesignerContainerExtension*>(core->extensionManager(), mainWindow);
        if (b && !docked()) {
            // Dock it
            // ### undo/redo stack
            setParent(0);
            c->addWidget(this);
            formWindow()->selectWidget(this, formWindow()->cursor()->isWidgetSelected(this));
        } else if (!b && docked()) {
            // Undock it
            for (int i = 0; i < c->count(); ++i) {
                if (c->widget(i) == this) {
                    c->remove(i);
                    break;
                }
            }
            // #### restore the position
            setParent(mainWindow->centralWidget());
            show();
            formWindow()->selectWidget(this, formWindow()->cursor()->isWidgetSelected(this));
        }
    }
}

bool SignalSlotDialog::editMetaDataBase(QDesignerFormWindowInterface *fw, QObject *object, QWidget *parent, FocusMode mode)
{
    QDesignerFormEditorInterface *core = fw->core();
    SignalSlotDialog dlg(core->dialogGui(), parent, mode);
    dlg.setWindowTitle(tr("Signals/Slots of %1").arg(object->objectName()));

    SignalSlotDialogData slotData;
    SignalSlotDialogData signalData;

    existingMethodsFromMemberSheet(core, object, slotData.m_existingMethods, signalData.m_existingMethods);
    fakeMethodsFromMetaDataBase(core, object, slotData.m_fakeMethods, signalData.m_fakeMethods);

    const QStringList oldSlots =  slotData.m_fakeMethods;
    const QStringList oldSignals = signalData.m_fakeMethods;

    if (dlg.showDialog(slotData, signalData) == QDialog::Rejected)
        return false;

    if (oldSlots == slotData.m_fakeMethods && oldSignals == signalData.m_fakeMethods)
        return false;

    FakeMethodMetaDBCommand *cmd = new FakeMethodMetaDBCommand(fw);
    cmd->init(object, oldSlots, oldSignals, slotData.m_fakeMethods, signalData.m_fakeMethods);
    fw->commandHistory()->push(cmd);
    return true;
}

QDesignerContainerExtension *QDesignerQ3WidgetStack::container()
{
    if (formWindow()) {
        QDesignerFormEditorInterface *core = formWindow()->core();
        return qt_extension<QDesignerContainerExtension*>(core->extensionManager(), this);
    }
    return 0;
}

QDesignerActionProviderExtension *QDesignerMenuBar::actionProvider()
{
    if (QDesignerFormWindowInterface *fw = formWindow()) {
        QDesignerFormEditorInterface *core = fw->core();
        return qt_extension<QDesignerActionProviderExtension*>(core->extensionManager(), this);
    }

    return 0;
}

void TabOrderEditor::mousePressEvent(QMouseEvent *e)
{
    e->accept();

    if (!m_indicator_region.contains(e->pos())) {
        if (QWidget *child = m_bg_widget->childAt(e->pos())) {
            QDesignerFormEditorInterface *core = m_form_window->core();
            if (core->widgetFactory()->isPassiveInteractor(child)) {

                QMouseEvent event(QEvent::MouseButtonPress,
                                    child->mapFromGlobal(e->globalPos()),
                                    e->button(), e->buttons(), e->modifiers());

                qApp->sendEvent(child, &event);

                QMouseEvent event2(QEvent::MouseButtonRelease,
                                    child->mapFromGlobal(e->globalPos()),
                                    e->button(), e->buttons(), e->modifiers());

                qApp->sendEvent(child, &event2);

                updateBackground();
            }
        }
        return;
    }

    if (e->button() != Qt::LeftButton)
        return;

    const int target_index = widgetIndexAt(e->pos());
    if (target_index == -1)
        return;

    m_beginning = false;

    if (e->modifiers() & Qt::ControlModifier) {
        m_current_index = target_index + 1;
        if (m_current_index >= m_tab_order_list.size())
            m_current_index = 0;
        update();
        return;
    }

    if (m_current_index == -1)
        return;

    m_tab_order_list.swap(target_index, m_current_index);

    ++m_current_index;
    if (m_current_index == m_tab_order_list.size())
        m_current_index = 0;

    TabOrderCommand *cmd = new TabOrderCommand(formWindow());
    cmd->init(m_tab_order_list);
    formWindow()->commandHistory()->push(cmd);
}

PromotionTaskMenu::PromotionState  PromotionTaskMenu::createPromotionActions(QDesignerFormWindowInterface *formWindow)
{
    // clear out old
    if (!m_promotionActions.empty()) {
        qDeleteAll(m_promotionActions);
        m_promotionActions.clear();
    }
    // No promotion of main container
    if (formWindow->mainContainer() == m_widget)
        return NotApplicable;

    // Check for a homogenous selection
    const PromotionSelectionList promotionSelection = promotionSelectionList(formWindow);

    if (promotionSelection.empty())
        return NoHomogenousSelection;

    QDesignerFormEditorInterface *core = formWindow->core();
    // if it is promoted: demote only.
    if (isPromoted(formWindow->core(), m_widget)) {
        const QString label = m_demoteLabel.arg( promotedExtends(core , m_widget));
        QAction *demoteAction = new QAction(label, this);
        connect(demoteAction, SIGNAL(triggered()), this, SLOT(slotDemoteFromCustomWidget()));
        m_promotionActions.push_back(demoteAction);
        return CanDemote;
    }
    // figure out candidates
    const QString baseClassName = WidgetFactory::classNameOf(core,  m_widget);
    const WidgetDataBaseItemList candidates = promotionCandidates(core->widgetDataBase(), baseClassName );
    if (candidates.empty()) {
        // Is this thing promotable at all?
        return QDesignerPromotionDialog::baseClassNames(core->promotion()).contains(baseClassName) ?  CanPromote : NotApplicable;
    }
    // Set up a signal mapper to associate class names
    if (!m_promotionMapper) {
        m_promotionMapper = new QSignalMapper(this);
        connect(m_promotionMapper, SIGNAL(mapped(QString)), this, SLOT(slotPromoteToCustomWidget(QString)));
    }

    QMenu *candidatesMenu = new QMenu();
    // Create a sub menu
    const WidgetDataBaseItemList::const_iterator cend = candidates.constEnd();
    // Set up actions and map class names
    for (WidgetDataBaseItemList::const_iterator it = candidates.constBegin(); it != cend; ++it) {
        const QString customClassName = (*it)->name();
        QAction *action = new QAction((*it)->name(), this);
        connect(action, SIGNAL(triggered()), m_promotionMapper, SLOT(map()));
        m_promotionMapper->setMapping(action, customClassName);
        candidatesMenu->addAction(action);
    }
    // Sub menu action
    QAction *subMenuAction = new QAction(m_promoteLabel, this);
    subMenuAction->setMenu(candidatesMenu);
    m_promotionActions.push_back(subMenuAction);
    return CanPromote;
}

bool QDesignerFormWindowCommand::hasLayout(QWidget *widget) const
{
    QDesignerFormEditorInterface *core = formWindow()->core();
    if (widget && LayoutInfo::layoutType(core, widget) != LayoutInfo::NoLayout) {
        const QDesignerMetaDataBaseItemInterface *item = core->metaDataBase()->item(widget);
        return item != 0;
    }

    return false;
}

void ButtonGroupCommand::createButtonGroup()
{
    if (debugButtonMenu)
        qDebug() << "Creating " <<  m_buttonGroup << " from " <<  m_buttonList;

    QDesignerFormWindowInterface *fw = formWindow();
    QDesignerFormEditorInterface *core = fw->core();
    core->metaDataBase()->add(m_buttonGroup);
    addButtonsToGroup();
    // Make button group visible
    core->objectInspector()->setFormWindow(fw);
}

ConnectDialog::WidgetMode ConnectDialog::widgetMode(QWidget *w,  QDesignerFormWindowInterface *formWindow)
{
    QDesignerFormEditorInterface *core = formWindow->core();
    if (qt_extension<QDesignerLanguageExtension*>(core->extensionManager(), core))
        return NormalWidget;

    if (w == formWindow || formWindow->mainContainer() == w)
        return MainContainer;

    if (isPromoted(formWindow->core(), w))
        return PromotedWidget;

    return NormalWidget;
}

void ToolBarEventFilter::adjustDragIndicator(const QPoint &pos)
{
    if (QDesignerFormWindowInterface *fw = formWindow()) {
        QDesignerFormEditorInterface *core = fw->core();
        if (QDesignerActionProviderExtension *a = qt_extension<QDesignerActionProviderExtension*>(core->extensionManager(), m_toolBar))
            a->adjustIndicator(pos);
    }
}

void QDesignerIntegrationPrivate::updateCustomWidgetPlugins()
{
    QDesignerFormEditorInterface *formEditor = q->core();
    if (QDesignerPluginManager *pm = formEditor->pluginManager())
        pm->registerNewPlugins();

    initializePlugins(formEditor);

    // Do not just reload the last file as the WidgetBox merges the compiled-in resources
    // and $HOME/.designer/widgetbox.xml. This would also double the scratchpad.
    if (QDesignerWidgetBox *wb = qobject_cast<QDesignerWidgetBox*>(formEditor->widgetBox())) {
        const QDesignerWidgetBox::LoadMode oldLoadMode = wb->loadMode();
        wb->setLoadMode(QDesignerWidgetBox::LoadCustomWidgetsOnly);
        wb->load();
        wb->setLoadMode(oldLoadMode);
    }
}

bool ToolBarEventFilter::handleMousePressEvent(QMouseEvent *event)
{
    if (event->button() != Qt::LeftButton || withinHandleArea(m_toolBar, event->pos()))
        return false;

    if (QDesignerFormWindowInterface *fw = formWindow()) {
        QDesignerFormEditorInterface *core = fw->core();
        // Keep selection in sync
        fw->clearSelection(false);
        if (QDesignerObjectInspector *oi = qobject_cast<QDesignerObjectInspector *>(core->objectInspector())) {
            oi->clearSelection();
            oi->selectObject(m_toolBar);
        }
        core->propertyEditor()->setObject(m_toolBar);
    }
    m_startPosition = m_toolBar->mapFromGlobal(event->globalPos());
    event->accept();
    return true;
}

void TabOrderEditor::initTabOrder()
{
    m_tab_order_list.clear();

    QDesignerFormEditorInterface *core = formWindow()->core();

    if (const QDesignerMetaDataBaseItemInterface *item = core->metaDataBase()->item(formWindow())) {
        m_tab_order_list = item->tabOrder();
    }

    // Remove any widgets that have been removed form the form
    for (int i = 0; i < m_tab_order_list.size(); ) {
        QWidget *w = m_tab_order_list.at(i);
        if (!formWindow()->mainContainer()->isAncestorOf(w) || skipWidget(w))
            m_tab_order_list.removeAt(i);
        else
            ++i;
    }

    // Append any widgets that are in the form but are not in the tab order
    QDesignerFormWindowCursorInterface *cursor = formWindow()->cursor();
    for (int i = 0; i < cursor->widgetCount(); ++i) {

        QWidget *widget = cursor->widget(i);
        if (skipWidget(widget))
            continue;

        if (!m_tab_order_list.contains(widget))
            m_tab_order_list.append(widget);
    }

    m_indicator_region = QRegion();
    for (int i = 0; i < m_tab_order_list.size(); ++i) {
        if (m_tab_order_list.at(i)->isVisible())
            m_indicator_region |= indicatorRect(i);
    }

    if (m_current_index >= m_tab_order_list.size())
        m_current_index = m_tab_order_list.size() - 1;
    if (m_current_index < 0)
        m_current_index = 0;
}