qdesigner_resource.cpp

QT 开发环境里面一个很重要的文件

            int row, column, rowspan, colspan;
            grid->getItemPosition(index, &row, &column, &rowspan, &colspan);
            ui_item->setAttributeRow(row);
            ui_item->setAttributeColumn(column);

            if (colspan != 1)
                ui_item->setAttributeColSpan(colspan);

            if (rowspan != 1)
                ui_item->setAttributeRowSpan(rowspan);
        }
    }

    return ui_item;
}

void QDesignerResource::createCustomWidgets(DomCustomWidgets *dom_custom_widgets)
{
    if (dom_custom_widgets == 0)
        return;
    QList<DomCustomWidget*> custom_widget_list = dom_custom_widgets->elementCustomWidget();
    QDesignerWidgetDataBaseInterface *db = m_formWindow->core()->widgetDataBase();
    foreach(DomCustomWidget *custom_widget, custom_widget_list) {
        WidgetDataBaseItem *item
            = new WidgetDataBaseItem(custom_widget->elementClass());
        QString base_class = custom_widget->elementExtends();
        item->setExtends(base_class);
        item->setPromoted(!base_class.isEmpty());
        item->setGroup(base_class.isEmpty() ? QApplication::translate("Designer", "Custom Widgets")
                                                : QApplication::translate("Designer", "Promoted Widgets"));
        if (DomHeader *header = custom_widget->elementHeader())
            item->setIncludeFile(header->text());
        item->setContainer(custom_widget->elementContainer());
        item->setCustom(true);
        db->append(item);
    }
}

DomTabStops *QDesignerResource::saveTabStops()
{
    QDesignerMetaDataBaseItemInterface *item = core()->metaDataBase()->item(m_formWindow);
    Q_ASSERT(item);

    QStringList tabStops;
    foreach (QWidget *widget, item->tabOrder()) {
        if (m_formWindow->mainContainer()->isAncestorOf(widget))
            tabStops.append(widget->objectName());
    }

    if (tabStops.count()) {
        DomTabStops *dom = new DomTabStops;
        dom->setElementTabStop(tabStops);
        return dom;
    }

    return 0;
}

void QDesignerResource::applyTabStops(QWidget *widget, DomTabStops *tabStops)
{
    if (!tabStops)
        return;

    QList<QWidget*> tabOrder;
    foreach (QString widgetName, tabStops->elementTabStop()) {
        if (QWidget *w = qFindChild<QWidget*>(widget, widgetName)) {
            tabOrder.append(w);
        }
    }

    QDesignerMetaDataBaseItemInterface *item = core()->metaDataBase()->item(m_formWindow);
    Q_ASSERT(item);
    item->setTabOrder(tabOrder);
}

DomWidget *QDesignerResource::saveWidget(QWidget *widget, QDesignerContainerExtension *container, DomWidget *ui_parentWidget)
{
    DomWidget *ui_widget = QAbstractFormBuilder::createDom(widget, ui_parentWidget, false);
    QList<DomWidget*> ui_widget_list;

    for (int i=0; i<container->count(); ++i) {
        QWidget *page = container->widget(i);
        Q_ASSERT(page);

        DomWidget *ui_page = createDom(page, ui_widget);
        Q_ASSERT( ui_page != 0 );

        ui_widget_list.append(ui_page);
    }

    ui_widget->setElementWidget(ui_widget_list);

    return ui_widget;
}

DomWidget *QDesignerResource::saveWidget(QDesignerStackedWidget *widget, DomWidget *ui_parentWidget)
{
    DomWidget *ui_widget = QAbstractFormBuilder::createDom(widget, ui_parentWidget, false);
    QList<DomWidget*> ui_widget_list;
    if (QDesignerContainerExtension *container = qt_extension<QDesignerContainerExtension*>(core()->extensionManager(), widget)) {
        for (int i=0; i<container->count(); ++i) {
            QWidget *page = container->widget(i);
            Q_ASSERT(page);

            DomWidget *ui_page = createDom(page, ui_widget);
            Q_ASSERT( ui_page != 0 );

            ui_widget_list.append(ui_page);
        }
    }

    ui_widget->setElementWidget(ui_widget_list);

    return ui_widget;
}

DomWidget *QDesignerResource::saveWidget(QDesignerToolBar *toolBar, DomWidget *ui_parentWidget)
{
    DomWidget *ui_widget = QAbstractFormBuilder::createDom(toolBar, ui_parentWidget, false);
    if (QMainWindow *mainWindow = qobject_cast<QMainWindow*>(toolBar->parentWidget())) {
        Qt::ToolBarArea area = mainWindow->toolBarArea(toolBar);
        DomProperty *attr = new DomProperty();
        attr->setAttributeName(QLatin1String("toolBarArea"));
        attr->setElementNumber(int(area));
        ui_widget->setElementAttribute(ui_widget->elementAttribute() << attr);
    }

    return ui_widget;
}

DomWidget *QDesignerResource::saveWidget(QDesignerDockWidget *dockWidget, DomWidget *ui_parentWidget)
{
    DomWidget *ui_widget = QAbstractFormBuilder::createDom(dockWidget, ui_parentWidget, true);
    if (QMainWindow *mainWindow = qobject_cast<QMainWindow*>(dockWidget->parentWidget())) {
        Qt::DockWidgetArea area = mainWindow->dockWidgetArea(dockWidget);
        DomProperty *attr = new DomProperty();
        attr->setAttributeName(QLatin1String("dockWidgetArea"));
        attr->setElementNumber(int(area));
        ui_widget->setElementAttribute(ui_widget->elementAttribute() << attr);
    }

    return ui_widget;
}

DomProperty *QDesignerResource::createIconProperty(const QVariant &v) const
{
    DomProperty *dom_prop = new DomProperty();

    DomResourcePixmap *r = new DomResourcePixmap;
    QString icon_path;
    QString qrc_path;
    if (v.type() == QVariant::Icon) {
        QIcon icon = qvariant_cast<QIcon>(v);
        icon_path = iconToFilePath(icon);
        qrc_path = iconToQrcPath(icon);
    } else {
        QPixmap pixmap = qvariant_cast<QPixmap>(v);
        icon_path = pixmapToFilePath(pixmap);
        qrc_path = pixmapToQrcPath(pixmap);
    }

    if (qrc_path.isEmpty())
        icon_path = workingDirectory().relativeFilePath(icon_path);
    else
        qrc_path = workingDirectory().relativeFilePath(qrc_path);

    r->setText(icon_path);
    if (!qrc_path.isEmpty())
        r->setAttributeResource(qrc_path);

    if (v.type() == QVariant::Icon)
        dom_prop->setElementIconSet(r);
    else
        dom_prop->setElementPixmap(r);

    return dom_prop;
}

DomWidget *QDesignerResource::saveWidget(QDesignerTabWidget *widget, DomWidget *ui_parentWidget)
{
    DomWidget *ui_widget = QAbstractFormBuilder::createDom(widget, ui_parentWidget, false);
    QList<DomWidget*> ui_widget_list;

    if (QDesignerContainerExtension *container = qt_extension<QDesignerContainerExtension*>(core()->extensionManager(), widget)) {
        for (int i=0; i<container->count(); ++i) {
            QWidget *page = container->widget(i);
            Q_ASSERT(page);

            DomWidget *ui_page = createDom(page, ui_widget);
            Q_ASSERT( ui_page != 0 );

            QList<DomProperty*> ui_attribute_list;

            DomProperty *p = 0;
            DomString *str = 0;

            // attribute `title'
            p = new DomProperty();
            p->setAttributeName(QLatin1String("title"));
            str = new DomString();
            str->setText(widget->tabText(i));
            p->setElementString(str);
            ui_attribute_list.append(p);

            // attribute `icon'
            if (!widget->tabIcon(i).isNull()) {
                p = createIconProperty(widget->tabIcon(i));
                p->setAttributeName(QLatin1String("icon"));
                ui_attribute_list.append(p);
            }

            // attribute `toolTip'
            if (!widget->tabToolTip(i).isEmpty()) {
                p = new DomProperty();
                p->setAttributeName(QLatin1String("toolTip"));
                str = new DomString();
                str->setText(widget->tabToolTip(i));
                p->setElementString(str);
                ui_attribute_list.append(p);
            }

            ui_page->setElementAttribute(ui_attribute_list);

            ui_widget_list.append(ui_page);
        }
    }

    ui_widget->setElementWidget(ui_widget_list);

    return ui_widget;
}

DomWidget *QDesignerResource::saveWidget(QDesignerToolBox *widget, DomWidget *ui_parentWidget)
{
    DomWidget *ui_widget = QAbstractFormBuilder::createDom(widget, ui_parentWidget, false);
    QList<DomWidget*> ui_widget_list;

    if (QDesignerContainerExtension *container = qt_extension<QDesignerContainerExtension*>(core()->extensionManager(), widget)) {
        for (int i=0; i<container->count(); ++i) {
            QWidget *page = container->widget(i);
            Q_ASSERT(page);

            DomWidget *ui_page = createDom(page, ui_widget);
            Q_ASSERT( ui_page != 0 );

            // attribute `label'
            DomProperty *p = new DomProperty();
            p->setAttributeName(QLatin1String("label"));
            DomString *str = new DomString();
            str->setText(widget->itemText(i));
            p->setElementString(str); // ### check f tb->indexOf(page) == i ??

            QList<DomProperty*> ui_attribute_list;
            ui_attribute_list.append(p);

            // attribute `icon'
            if (!widget->itemIcon(i).isNull()) {
                p = createIconProperty(widget->itemIcon(i));
                p->setAttributeName(QLatin1String("icon"));
                ui_attribute_list.append(p);
            }

            // attribute `toolTip'
            if (!widget->itemToolTip(i).isEmpty()) {
                p = new DomProperty();
                p->setAttributeName(QLatin1String("toolTip"));
                str = new DomString();
                str->setText(widget->itemToolTip(i));
                p->setElementString(str);
                ui_attribute_list.append(p);
            }

            ui_page->setElementAttribute(ui_attribute_list);

            ui_widget_list.append(ui_page);
        }
    }

    ui_widget->setElementWidget(ui_widget_list);

    return ui_widget;
}

bool QDesignerResource::checkProperty(QObject *obj, const QString &prop) const
{
    const QMetaObject *meta = obj->metaObject();
    int pindex = meta->indexOfProperty(prop.toLatin1());
    if (pindex != -1) {
        if (!meta->property(pindex).isStored(obj))
            return false;
    }

    if (prop == QLatin1String("objectName")) { // ### don't store the property objectName
        return false;
    } else if (prop == QLatin1String("geometry") && obj->isWidgetType()) {
        QWidget *check_widget = qobject_cast<QWidget*>(obj);
         if (QDesignerPromotedWidget *promoted = qobject_cast<QDesignerPromotedWidget*>(obj->parent()))
            check_widget = promoted;

         if (m_selected && m_selected == check_widget)
             return true;

        return !LayoutInfo::isWidgetLaidout(core(), check_widget);
    }

    if (QDesignerPropertySheetExtension *sheet = qt_extension<QDesignerPropertySheetExtension*>(core()->extensionManager(), obj)) {
        int pindex = sheet->indexOf(prop);
        if (sheet->isAttribute(pindex))
            return false;

        return sheet->isChanged(pindex);
    }

    return false;
}

bool QDesignerResource::addItem(DomLayoutItem *ui_item, QLayoutItem *item, QLayout *layout)
{
    if (item->widget() == 0) {
        return false;
    }

    QGridLayout *grid = qobject_cast<QGridLayout*>(layout);
    QBoxLayout *box = qobject_cast<QBoxLayout*>(layout);

    if (grid != 0) {
        int rowSpan = ui_item->hasAttributeRowSpan() ? ui_item->attributeRowSpan() : 1;
        int colSpan = ui_item->hasAttributeColSpan() ? ui_item->attributeColSpan() : 1;
        add_to_grid_layout(grid, item->widget(), ui_item->attributeRow(), ui_item->attributeColumn(),
                        rowSpan, colSpan, item->alignment());
        return true;
    } else if (box != 0) {
        add_to_box_layout(box, item->widget());
        return true;
    }

    return QAbstractFormBuilder::addItem(ui_item, item, layout);
}

bool QDesignerResource::addItem(DomWidget *ui_widget, QWidget *widget, QWidget *parentWidget)
{
    core()->metaDataBase()->add(widget); // ensure the widget is in the meta database

    if (! QAbstractFormBuilder::addItem(ui_widget, widget, parentWidget) || qobject_cast<QMainWindow*> (parentWidget)) {
        if (QDesignerContainerExtension *container = qt_extension<QDesignerContainerExtension*>(core()->extensionManager(), parentWidget))
            container->addWidget(widget);
    }

    return true;
}

void QDesignerResource::copy(QIODevice *dev, const QList<QWidget*> &selection)
{
    m_copyWidget = true;

    DomUI *ui = copy(selection);
    QDomDocument doc;
    doc.appendChild(ui->write(doc));
    dev->write(doc.toString().toUtf8());

    m_laidout.clear();

    delete ui;
    m_copyWidget = false;
}

DomUI *QDesignerResource::copy(const QList<QWidget*> &selection)
{