qmainwindowlayout.cpp

奇趣公司比较新的qt/emd版本

#endif //QT_NO_DOCKWIDGET

    return QRect();
}

QLayoutItem *QMainWindowLayoutState::plug(QList<int> path)
{
    int i = path.takeFirst();

#ifndef QT_NO_TOOLBAR
    if (i == 0)
        return toolBarAreaLayout.plug(path);
#endif

#ifndef QT_NO_DOCKWIDGET
    if (i == 1)
        return dockAreaLayout.plug(path);
#endif //QT_NO_DOCKWIDGET

    return 0;
}

QLayoutItem *QMainWindowLayoutState::unplug(QList<int> path)
{
    int i = path.takeFirst();

#ifndef QT_NO_TOOLBAR
    if (i == 0)
        return toolBarAreaLayout.unplug(path);
#endif

#ifndef QT_NO_DOCKWIDGET
    if (i == 1)
        return dockAreaLayout.unplug(path);
#endif //QT_NO_DOCKWIDGET

    return 0;
}

void QMainWindowLayoutState::saveState(QDataStream &stream) const
{
#ifndef QT_NO_DOCKWIDGET
    dockAreaLayout.saveState(stream);
#endif
#ifndef QT_NO_TOOLBAR
    toolBarAreaLayout.saveState(stream);
#endif
}

template <typename T>
static QList<T> findChildren(const QObject *o)
{
    const QObjectList &list = o->children();
    QList<T> result;

    for (int i=0; i < list.size(); ++i) {
        if (T t = qobject_cast<T>(list[i])) {
            result.append(t);
        }
    }

    return result;
}


bool QMainWindowLayoutState::restoreState(QDataStream &stream,
                                        const QMainWindowLayoutState &oldState)
{
    while (!stream.atEnd()) {
        uchar marker;
        stream >> marker;
        switch(marker)
        {
#ifndef QT_NO_TOOLBAR
            case QToolBarAreaLayout::ToolBarStateMarker:
            case QToolBarAreaLayout::ToolBarStateMarkerEx:
                {
                    QList<QToolBar *> toolBars = ::findChildren<QToolBar*>(mainWindow);
                    if (!toolBarAreaLayout.restoreState(stream, toolBars, marker))
                        return false;

                    for (int i = 0; i < toolBars.size(); ++i) {
                        QToolBar *w = toolBars.at(i);
                        QList<int> path = toolBarAreaLayout.indexOf(w);
                        if (path.isEmpty()) {
                            QList<int> oldPath = oldState.toolBarAreaLayout.indexOf(w);
                            if (oldPath.isEmpty()) {
                                continue;
                            }
                            toolBarAreaLayout.docks[oldPath.at(0)].insertToolBar(0, w);
                        }
                    }
                }
                break;
#endif // QT_NO_TOOLBAR

#ifndef QT_NO_DOCKWIDGET
            case QDockAreaLayout::DockWidgetStateMarker:
                {
                    QList<QDockWidget *> dockWidgets = ::findChildren<QDockWidget*>(mainWindow);
                    if (!dockAreaLayout.restoreState(stream, dockWidgets))
                        return false;

                    for (int i = 0; i < dockWidgets.size(); ++i) {
                        QDockWidget *w = dockWidgets.at(i);
                        QList<int> path = dockAreaLayout.indexOf(w);
                        if (path.isEmpty()) {
                            QList<int> oldPath = oldState.dockAreaLayout.indexOf(w);
                            if (oldPath.isEmpty()) {
                                continue;
                            }
                            QDockAreaLayoutInfo *info = dockAreaLayout.info(oldPath);
                            if (info == 0) {
                                continue;
                            }
                            info->item_list.append(QDockAreaLayoutItem(new QDockWidgetItem(w)));
                        }
                    }
                }
                break;
#endif
            default:
                return false;
        }// switch
    } //while

    return true;
}

/******************************************************************************
** QMainWindowLayoutState - toolbars
*/

#ifndef QT_NO_TOOLBAR

static inline void validateToolBarArea(Qt::ToolBarArea &area)
{
    switch (area) {
    case Qt::LeftToolBarArea:
    case Qt::RightToolBarArea:
    case Qt::TopToolBarArea:
    case Qt::BottomToolBarArea:
        break;
    default:
        area = Qt::TopToolBarArea;
    }
}

static QInternal::DockPosition toDockPos(Qt::ToolBarArea area)
{
    switch (area) {
        case Qt::LeftToolBarArea: return QInternal::LeftDock;
        case Qt::RightToolBarArea: return QInternal::RightDock;
        case Qt::TopToolBarArea: return QInternal::TopDock;
        case Qt::BottomToolBarArea: return QInternal::BottomDock;
        default:
            break;
    }

    return QInternal::DockCount;
}

static Qt::ToolBarArea toToolBarArea(QInternal::DockPosition pos)
{
    switch (pos) {
        case QInternal::LeftDock:   return Qt::LeftToolBarArea;
        case QInternal::RightDock:  return Qt::RightToolBarArea;
        case QInternal::TopDock:    return Qt::TopToolBarArea;
        case QInternal::BottomDock: return Qt::BottomToolBarArea;
        default: break;
    }
    return Qt::NoToolBarArea;
}

static inline Qt::ToolBarArea toToolBarArea(int pos)
{
    return toToolBarArea(static_cast<QInternal::DockPosition>(pos));
}

void QMainWindowLayout::addToolBarBreak(Qt::ToolBarArea area)
{
    validateToolBarArea(area);

    layoutState.toolBarAreaLayout.addToolBarBreak(toDockPos(area));
    invalidate();
}

void QMainWindowLayout::insertToolBarBreak(QToolBar *before)
{
    layoutState.toolBarAreaLayout.insertToolBarBreak(before);
    invalidate();
}

void QMainWindowLayout::removeToolBarBreak(QToolBar *before)
{
    layoutState.toolBarAreaLayout.removeToolBarBreak(before);
    invalidate();
}

#ifdef Q_WS_MAC

void QMainWindowLayout::updateHIToolBarStatus()
{
#ifndef kWindowUnifiedTitleAndToolbarAttribute
#define kWindowUnifiedTitleAndToolbarAttribute (1 << 7)
#endif
    bool useHIToolbar = layoutState.mainWindow->unifiedTitleAndToolBarOnMac();
    if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) {
        if (useHIToolbar) {
            ChangeWindowAttributes(qt_mac_window_for(layoutState.mainWindow),
                                   kWindowUnifiedTitleAndToolbarAttribute, 0);
        } else {
            ChangeWindowAttributes(qt_mac_window_for(layoutState.mainWindow),
                                   0, kWindowUnifiedTitleAndToolbarAttribute);
        }
    }

    layoutState.mainWindow->setUpdatesEnabled(false);  // reduces a little bit of flicker, not all though
    if (!useHIToolbar) {
        ShowHideWindowToolbar(qt_mac_window_for(parentWidget()), false, false);
        // Move everything out of the HIToolbar into the main toolbar.
        while (!qtoolbarsInHIToolbarList.isEmpty()) {
            // Should shrink the list by one every time.
            layoutState.mainWindow->addToolBar(Qt::TopToolBarArea, qtoolbarsInHIToolbarList.first());
        }
        SetWindowToolbar(qt_mac_window_for(parentWidget()), 0);
    } else {
        QList<QToolBar *> toolbars = layoutState.mainWindow->findChildren<QToolBar *>();
        for (int i = 0; i < toolbars.size(); ++i) {
            QToolBar *toolbar = toolbars.at(i);
            if (toolBarArea(toolbar) == Qt::TopToolBarArea) {
                removeWidget(toolbar);  // Do this here, because we are in an in-between state.
                layoutState.mainWindow->addToolBar(Qt::TopToolBarArea, toolbar);
            }
        }
    }
    layoutState.mainWindow->setUpdatesEnabled(true);
}

static const int kEventParamQToolBar = 'QTBR';
static const int kEventParamQMainWindowLayout = 'QMWL';

#define kQToolBarHIToolbarItemClassID CFSTR("com.trolltech.qt.qmainwindow.qtoolbarInHIToolbar")

const EventTypeSpec qtoolbarEvents[] =
{
    { kEventClassHIObject, kEventHIObjectConstruct },
    { kEventClassHIObject, kEventHIObjectDestruct },
    { kEventClassHIObject, kEventHIObjectInitialize },
    { kEventClassToolbarItem, kEventToolbarItemCreateCustomView }
};

struct QToolBarInHIToolbarInfo
{
    QToolBarInHIToolbarInfo(HIToolbarItemRef item)
        : toolbarItem(item), mainWindowLayout(0)
    {}
    HIToolbarItemRef toolbarItem;
    QMainWindowLayout *mainWindowLayout;
};

OSStatus QMainWindowLayout::qtoolbarInHIToolbarHandler(EventHandlerCallRef inCallRef,
                                                       EventRef event, void *data)
{
    OSStatus result = eventNotHandledErr;
    QToolBarInHIToolbarInfo *object = static_cast<QToolBarInHIToolbarInfo *>(data);

    switch (GetEventClass(event)) {
        case kEventClassHIObject:
            switch (GetEventKind(event)) {
                case kEventHIObjectConstruct:
                    {
                        HIObjectRef toolbarItem;
                        GetEventParameter(event, kEventParamHIObjectInstance, typeHIObjectRef,
                                          0, sizeof( HIObjectRef ), 0, &toolbarItem);

                        QToolBarInHIToolbarInfo *item = new QToolBarInHIToolbarInfo(toolbarItem);
                        SetEventParameter(event, kEventParamHIObjectInstance, typeVoidPtr,
                                          sizeof(void *), &item);
                        result = noErr;
                    }
                    break;
                case kEventHIObjectInitialize:
                    result = CallNextEventHandler(inCallRef, event);
                    if (result == noErr) {
                        QToolBar *toolbar = 0;
                        QMainWindowLayout *layout = 0;
                        GetEventParameter(event, kEventParamQToolBar, typeVoidPtr,
                                          0, sizeof(void *), 0, &toolbar);
                        GetEventParameter(event, kEventParamQMainWindowLayout, typeVoidPtr,
                                          0, sizeof(void *), 0, &layout);
                        object->mainWindowLayout = layout;
                        object->mainWindowLayout->hitoolbarHash.insert(object->toolbarItem, toolbar);
                        HIToolbarItemChangeAttributes(object->toolbarItem,
                                                      kHIToolbarItemLabelDisabled, 0);
                    }
                    break;

                case kEventHIObjectDestruct:
                    delete object;
                    result = noErr;
                    break;
            }
            break;

        case kEventClassToolbarItem:
            switch (GetEventKind(event))
            {
                case kEventToolbarItemCreateCustomView:
                    {
                        QToolBar *toolbar
                                = object->mainWindowLayout->hitoolbarHash.value(object->toolbarItem);
                        if (toolbar) {
                            HIViewRef hiview = HIViewRef(toolbar->winId());
                            SetEventParameter(event, kEventParamControlRef, typeControlRef,
                                              sizeof(HIViewRef), &hiview);
                            result = noErr;
                        }
                    }
                    break;
            }
            break;
    }

    return result;
}

void QMainWindowLayout::qtMacHIToolbarRegisterQToolBarInHIToolborItemClass()
{
    static bool registered = false;

    if (!registered) {
        HIObjectRegisterSubclass( kQToolBarHIToolbarItemClassID,
                kHIToolbarItemClassID, 0, QMainWindowLayout::qtoolbarInHIToolbarHandler,
                GetEventTypeCount(qtoolbarEvents), qtoolbarEvents, 0, 0 );
        registered = true;
    }
}

static void GetToolbarAllowedItems(CFMutableArrayRef array)
{
    CFArrayAppendValue(array, CFSTR("com.trolltech.qt.hitoolbar-qtoolbar"));
}

HIToolbarItemRef QMainWindowLayout::createQToolBarInHIToolbarItem(QToolBar *toolbar,
                                                                  QMainWindowLayout *layout)
{
    QMainWindowLayout::qtMacHIToolbarRegisterQToolBarInHIToolborItemClass();

    EventRef event;
    HIToolbarItemRef result = 0;

    CFStringRef identifier = CFSTR("com.trolltech.qt.hitoolbar-qtoolbar");
    UInt32 options = kHIToolbarItemAllowDuplicates;

    CreateEvent(0, kEventClassHIObject, kEventHIObjectInitialize,
                GetCurrentEventTime(), 0, &event);
    SetEventParameter(event, kEventParamToolbarItemIdentifier, typeCFStringRef,
                      sizeof(CFStringRef), &identifier);
    SetEventParameter(event, kEventParamAttributes, typeUInt32, sizeof(UInt32), &options);
    SetEventParameter(event, kEventParamQToolBar, typeVoidPtr, sizeof(void *), &toolbar);
    SetEventParameter(event, kEventParamQMainWindowLayout, typeVoidPtr, sizeof(void *), &layout);

    HIObjectCreate(kQToolBarHIToolbarItemClassID, event,
                                  static_cast<HIObjectRef *>(&result));

    ReleaseEvent(event);
    return result;

}

HIToolbarItemRef QMainWindowLayout::CreateToolbarItemForIdentifier(CFStringRef identifier,
                                                                   CFTypeRef data)
{
    HIToolbarItemRef item = 0;
    if (CFStringCompare(CFSTR("com.trolltech.qt.hitoolbar-qtoolbar"), identifier,
                              kCFCompareBackwards) == kCFCompareEqualTo) {
        if (data && CFGetTypeID(data) == CFArrayGetTypeID()) {
            CFArrayRef array = static_cast<CFArrayRef>(data);
            QToolBar *toolbar = static_cast<QToolBar *>(const_cast<void *>(CFArrayGetValueAtIndex(array, 0)));
            QMainWindowLayout *layout = static_cast<QMainWindowLayout *>(const_cast<void *>(CFArrayGetValueAtIndex(array, 1)));
            item = createQToolBarInHIToolbarItem(toolbar, layout);
        }
    }
    return item;
}

static const EventTypeSpec kToolbarEvents[] = {
    { kEventClassToolbar, kEventToolbarGetDefaultIdentifiers },
    { kEventClassToolbar, kEventToolbarGetAllowedIdentifiers },
    { kEventClassToolbar, kEventToolbarCreateItemWithIdentifier },
    { kEventClassToolbar, kEventToolbarItemAdded },
    { kEventClassToolbar, kEventToolbarItemRemoved }
};

OSStatus QMainWindowLayout::qtmacToolbarDelegate(EventHandlerCallRef, EventRef event, void *data)
{
    QMainWindowLayout *mainWindowLayout = static_cast<QMainWindowLayout *>(data);
    OSStatus            result = eventNotHandledErr;
    CFMutableArrayRef   array;
    CFStringRef         identifier;
    switch (GetEventKind(event)) {
    case kEventToolbarGetDefaultIdentifiers:
    case kEventToolbarGetAllowedIdentifiers:
        GetEventParameter(event, kEventParamMutableArray, typeCFMutableArrayRef, 0,
                          sizeof(CFMutableArrayRef), 0, &array);
        GetToolbarAllowedItems(array);
        result = noErr;
        break;
    case kEventToolbarCreateItemWithIdentifier: {
        HIToolbarItemRef item;
        CFTypeRef data = 0;
        OSStatus err = GetEventParameter(event, kEventParamToolbarItemIdentifier, typeCFStringRef,
                          0, sizeof(CFStringRef), 0, &identifier);
        err = GetEventParameter(event, kEventParamToolbarItemConfigData, typeCFTypeRef,
                          0, sizeof(CFTypeRef), 0, &data);
        item = CreateToolbarItemForIdentifier(identifier, data);
        if (item) {
            result = SetEventParameter(event, kEventParamToolbarItem, typeHIToolbarItemRef,
                              sizeof(HIToolbarItemRef), &item );
        }
        break;
    }
    case kEventToolbarItemAdded: {
        // Double check that our "view" of the toolbar is similar.
        HIToolbarItemRef item;
        CFIndex index;
        if (GetEventParameter(event, kEventParamToolbarItem, typeHIToolbarItemRef,
                              0, sizeof(HIToolbarItemRef), 0, &item) == noErr
            && GetEventParameter(event, kEventParamIndex, typeCFIndex, 0,
                                 sizeof(CFIndex), 0, &index) == noErr) {
            CFRetain(item); // We will watch this until it's removed from the list (or bust).
            mainWindowLayout->toolbarItemsCopy.insert(index, item);
            QToolBar *toolbar = mainWindowLayout->hitoolbarHash.value(item);
            if (toolbar) {
                int toolbarIndex = mainWindowLayout->qtoolbarsInHIToolbarList.indexOf(toolbar);
                if (index != toolbarIndex) {
                    // Dang, we must be out of sync, rebuild it from the "toolbarItemsCopy"
                    mainWindowLayout->qtoolbarsInHIToolbarList.clear();
                    for (int i = 0; i < mainWindowLayout->toolbarItemsCopy.size(); ++i) {
                        // This will either append the correct toolbar or an
                        // null toolbar. This is fine because this list
                        // is really only kept to make sure that things are but in the right order.
                        mainWindowLayout->qtoolbarsInHIToolbarList.append(
                                mainWindowLayout->hitoolbarHash.value(mainWindowLayout->
                                                                        toolbarItemsCopy.at(i)));
                    }
                }
            }
        }
        break;
    }
    case kEventToolbarItemRemoved: {
        HIToolbarItemRef item;
        if (GetEventParameter(event, kEventParamToolbarItem, typeHIToolbarItemRef,
                              0, sizeof(HIToolbarItemRef), 0, &item) == noErr) {
            mainWindowLayout->hitoolbarHash.remove(item);
            for (int i = 0; i < mainWindowLayout->toolbarItemsCopy.size(); ++i) {
                if (mainWindowLayout->toolbarItemsCopy.at(i) == item) {
                    // I know about it, so release it.
                    mainWindowLayout->toolbarItemsCopy.removeAt(i);
                    mainWindowLayout->qtoolbarsInHIToolbarList.removeAt(i);
                    CFRelease(item);
                    break;
                }
            }
        }
        break;
    }
    }
    return result;
}

void QMainWindowLayout::insertIntoMacHIToolbar(QToolBar *before, QToolBar *toolbar)
{
    if (toolbar == 0)
        return;

    toolbarSaveState.insert(toolbar, ToolBarSaveState(toolbar->isMovable(),
                                                      toolbar->maximumSize()));
    toolbar->setMovable(false);
    toolbar->setMaximumSize(toolbar->sizeHint());
    static_cast<QToolBarLayout *>(toolbar->layout())->setUsePopupMenu(true);
    layoutState.mainWindow->createWinId();
    HIToolbarRef macToolbar;
    WindowRef window = qt_mac_window_for(layoutState.mainWindow);
    if ((GetWindowToolbar(window, &macToolbar) == noErr) && !macToolbar) {
        HIToolbarCreate(CFSTR("com.trolltech.qt.qmainwindow.hitoolbar"),
                        kHIToolbarItemAllowDuplicates, &macToolbar);

        InstallEventHandler(HIObjectGetEventTarget(static_cast<HIToolbarRef>(macToolbar)),
                            QMainWindowLayout::qtmacToolbarDelegate, GetEventTypeCount(kToolbarEvents),
                            kToolbarEvents, this, 0);

        HIToolbarSetDisplaySize(macToolbar, kHIToolbarDisplaySizeNormal);
        HIToolbarSetDisplayMode(macToolbar, kHIToolbarDisplayModeIconOnly);