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Diffstat (limited to 'src/qtquick1/util/qdeclarativeview.cpp')
| -rw-r--r-- | src/qtquick1/util/qdeclarativeview.cpp | 752 |
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diff --git a/src/qtquick1/util/qdeclarativeview.cpp b/src/qtquick1/util/qdeclarativeview.cpp deleted file mode 100644 index 0c8637d642..0000000000 --- a/src/qtquick1/util/qdeclarativeview.cpp +++ /dev/null @@ -1,752 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "QtQuick1/qdeclarativeview.h" - -#include <QtDeclarative/qdeclarative.h> -#include <QtQuick1/qdeclarativeitem.h> -#include <QtDeclarative/qdeclarativeengine.h> -#include <QtDeclarative/qdeclarativecontext.h> -#include <QtDeclarative/private/qdeclarativeglobal_p.h> -#include <QtDeclarative/private/qdeclarativeguard_p.h> - -#include <QtDeclarative/private/qdeclarativedebugtrace_p.h> -#include <QtDeclarative/private/qdeclarativeinspectorservice_p.h> - -#include <qdebug.h> -#include <qtimer.h> -#include <qevent.h> -#include <qdir.h> -#include <qcoreapplication.h> -#include <qfontdatabase.h> -#include <qicon.h> -#include <qurl.h> -#include <qlayout.h> -#include <qwidget.h> -#include <qgraphicswidget.h> -#include <qbasictimer.h> -#include <QtCore/qabstractanimation.h> -#include <QtQuick1/private/qdeclarativeitem_p.h> -#include <QtWidgets/private/qgraphicsview_p.h> -#include <private/qabstractanimation_p.h> -#include <QtQuick1/private/qdeclarativeitemchangelistener_p.h> - -QT_BEGIN_NAMESPACE - -DEFINE_BOOL_CONFIG_OPTION(frameRateDebug, QML_SHOW_FRAMERATE) - -class QDeclarative1Scene : public QGraphicsScene -{ -public: - QDeclarative1Scene(QObject *parent = 0); - -protected: - virtual void keyPressEvent(QKeyEvent *); - virtual void keyReleaseEvent(QKeyEvent *); - - virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *); - virtual void mousePressEvent(QGraphicsSceneMouseEvent *); - virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *); -}; - -QDeclarative1Scene::QDeclarative1Scene(QObject *parent) : QGraphicsScene(parent) -{ -} - -void QDeclarative1Scene::keyPressEvent(QKeyEvent *e) -{ - QDeclarativeDebugTrace::addEvent(QDeclarativeDebugTrace::Key); - - QGraphicsScene::keyPressEvent(e); -} - -void QDeclarative1Scene::keyReleaseEvent(QKeyEvent *e) -{ - QDeclarativeDebugTrace::addEvent(QDeclarativeDebugTrace::Key); - - QGraphicsScene::keyReleaseEvent(e); -} - -void QDeclarative1Scene::mouseMoveEvent(QGraphicsSceneMouseEvent *e) -{ - QDeclarativeDebugTrace::addEvent(QDeclarativeDebugTrace::Mouse); - - QGraphicsScene::mouseMoveEvent(e); -} - -void QDeclarative1Scene::mousePressEvent(QGraphicsSceneMouseEvent *e) -{ - QDeclarativeDebugTrace::addEvent(QDeclarativeDebugTrace::Mouse); - - QGraphicsScene::mousePressEvent(e); -} - -void QDeclarative1Scene::mouseReleaseEvent(QGraphicsSceneMouseEvent *e) -{ - QDeclarativeDebugTrace::addEvent(QDeclarativeDebugTrace::Mouse); - - QGraphicsScene::mouseReleaseEvent(e); -} - -class QDeclarativeViewPrivate : public QGraphicsViewPrivate, public QDeclarativeItemChangeListener -{ - Q_DECLARE_PUBLIC(QDeclarativeView) -public: - QDeclarativeViewPrivate() - : root(0), declarativeItemRoot(0), graphicsWidgetRoot(0), component(0), - resizeMode(QDeclarativeView::SizeViewToRootObject), initialSize(0,0) {} - ~QDeclarativeViewPrivate() { delete root; delete engine; } - void execute(); - void itemGeometryChanged(QDeclarativeItem *item, const QRectF &newGeometry, const QRectF &oldGeometry); - void initResize(); - void updateSize(); - inline QSize rootObjectSize() const; - - QDeclarativeGuard<QGraphicsObject> root; - QDeclarativeGuard<QDeclarativeItem> declarativeItemRoot; - QDeclarativeGuard<QGraphicsWidget> graphicsWidgetRoot; - - QUrl source; - - QDeclarativeEngine* engine; - QDeclarativeComponent *component; - QBasicTimer resizetimer; - - QDeclarativeView::ResizeMode resizeMode; - QSize initialSize; - QElapsedTimer frameTimer; - - void init(); -}; - -void QDeclarativeViewPrivate::execute() -{ - Q_Q(QDeclarativeView); - if (root) { - delete root; - root = 0; - } - if (component) { - delete component; - component = 0; - } - if (!source.isEmpty()) { - component = new QDeclarativeComponent(engine, source, q); - if (!component->isLoading()) { - q->continueExecute(); - } else { - QObject::connect(component, SIGNAL(statusChanged(QDeclarativeComponent::Status)), q, SLOT(continueExecute())); - } - } -} - -void QDeclarativeViewPrivate::itemGeometryChanged(QDeclarativeItem *resizeItem, const QRectF &newGeometry, const QRectF &oldGeometry) -{ - Q_Q(QDeclarativeView); - if (resizeItem == root && resizeMode == QDeclarativeView::SizeViewToRootObject) { - // wait for both width and height to be changed - resizetimer.start(0,q); - } - QDeclarativeItemChangeListener::itemGeometryChanged(resizeItem, newGeometry, oldGeometry); -} - -/*! - \class QDeclarativeView - \since QtQuick 1.0 - \brief The QDeclarativeView class provides a widget for displaying a Qt Declarative user interface. - - QDeclarativeItem objects can be placed on a standard QGraphicsScene and - displayed with QGraphicsView. QDeclarativeView is a QGraphicsView subclass - provided as a convenience for displaying QML files, and connecting between - QML and C++ Qt objects. - - QDeclarativeView provides: - - \list - \o Management of QDeclarativeComponent loading and object creation - \o Initialization of QGraphicsView for optimal performance with QML using these settings: - \list - \o QGraphicsView::setOptimizationFlags(QGraphicsView::DontSavePainterState) - \o QGraphicsView::setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate) - \o QGraphicsScene::setItemIndexMethod(QGraphicsScene::NoIndex) - \endlist - \o Initialization of QGraphicsView for QML key handling using these settings: - \list - \o QGraphicsView::viewport()->setFocusPolicy(Qt::NoFocus) - \o QGraphicsView::setFocusPolicy(Qt::StrongFocus) - \o QGraphicsScene::setStickyFocus(true) - \endlist - \endlist - - Typical usage: - - \code - QDeclarativeView *view = new QDeclarativeView; - view->setSource(QUrl::fromLocalFile("myqmlfile.qml")); - view->show(); - \endcode - - Since QDeclarativeView is a QWidget-based class, it can be used to - display QML interfaces within QWidget-based GUI applications that do not - use the Graphics View framework. - - To receive errors related to loading and executing QML with QDeclarativeView, - you can connect to the statusChanged() signal and monitor for QDeclarativeView::Error. - The errors are available via QDeclarativeView::errors(). - - If you're using your own QGraphicsScene-based scene with QDeclarativeView, remember to - enable scene's sticky focus mode and to set itemIndexMethod to QGraphicsScene::NoIndex. - - \sa {Integrating QML Code with Existing Qt UI Code}, {Using QML Bindings in C++ Applications} -*/ - - -/*! \fn void QDeclarativeView::sceneResized(QSize size) - This signal is emitted when the view is resized to \a size. -*/ - -/*! \fn void QDeclarativeView::statusChanged(QDeclarativeView::Status status) - This signal is emitted when the component's current \a status changes. -*/ - -/*! \fn void QDeclarativeView::initialSizeChanged(QSize size) - \internal -*/ - -/*! - \fn QDeclarativeView::QDeclarativeView(QWidget *parent) - - Constructs a QDeclarativeView with the given \a parent. -*/ -QDeclarativeView::QDeclarativeView(QWidget *parent) - : QGraphicsView(*(new QDeclarativeViewPrivate), parent) -{ - Q_D(QDeclarativeView); - setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Preferred); - d->init(); -} - -/*! - \fn QDeclarativeView::QDeclarativeView(const QUrl &source, QWidget *parent) - - Constructs a QDeclarativeView with the given QML \a source and \a parent. -*/ -QDeclarativeView::QDeclarativeView(const QUrl &source, QWidget *parent) - : QGraphicsView(*(new QDeclarativeViewPrivate), parent) -{ - Q_D(QDeclarativeView); - setSizePolicy(QSizePolicy::Preferred,QSizePolicy::Preferred); - d->init(); - setSource(source); -} - -void QDeclarativeViewPrivate::init() -{ - Q_Q(QDeclarativeView); - engine = new QDeclarativeEngine(); - q->setScene(new QDeclarative1Scene(q)); - - q->setOptimizationFlags(QGraphicsView::DontSavePainterState); - q->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff); - q->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff); - q->setFrameStyle(0); - - // These seem to give the best performance - q->setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate); - q->scene()->setItemIndexMethod(QGraphicsScene::NoIndex); - q->viewport()->setFocusPolicy(Qt::NoFocus); - q->setFocusPolicy(Qt::StrongFocus); - - q->scene()->setStickyFocus(true); //### needed for correct focus handling - -#ifdef QDECLARATIVEVIEW_NOBACKGROUND - q->setAttribute(Qt::WA_OpaquePaintEvent); - q->setAttribute(Qt::WA_NoSystemBackground); - q->viewport()->setAttribute(Qt::WA_OpaquePaintEvent); - q->viewport()->setAttribute(Qt::WA_NoSystemBackground); -#endif - - if (QDeclarativeDebugService::isDebuggingEnabled()) - QDeclarativeInspectorService::instance()->addView(q); -} - -/*! - Destroys the view. - */ -QDeclarativeView::~QDeclarativeView() -{ - if (QDeclarativeDebugService::isDebuggingEnabled()) - QDeclarativeInspectorService::instance()->removeView(this); -} - -/*! \property QDeclarativeView::source - \brief The URL of the source of the QML component. - - Changing this property causes the QML component to be reloaded. - - Ensure that the URL provided is full and correct, in particular, use - \l QUrl::fromLocalFile() when loading a file from the local filesystem. - */ - -/*! - Sets the source to the \a url, loads the QML component and instantiates it. - - Ensure that the URL provided is full and correct, in particular, use - \l QUrl::fromLocalFile() when loading a file from the local filesystem. - - Calling this methods multiple times with the same url will result - in the QML being reloaded. - */ -void QDeclarativeView::setSource(const QUrl& url) -{ - Q_D(QDeclarativeView); - d->source = url; - d->execute(); -} - -/*! - Returns the source URL, if set. - - \sa setSource() - */ -QUrl QDeclarativeView::source() const -{ - Q_D(const QDeclarativeView); - return d->source; -} - -/*! - Returns a pointer to the QDeclarativeEngine used for instantiating - QML Components. - */ -QDeclarativeEngine* QDeclarativeView::engine() const -{ - Q_D(const QDeclarativeView); - return d->engine; -} - -/*! - This function returns the root of the context hierarchy. Each QML - component is instantiated in a QDeclarativeContext. QDeclarativeContext's are - essential for passing data to QML components. In QML, contexts are - arranged hierarchically and this hierarchy is managed by the - QDeclarativeEngine. - */ -QDeclarativeContext* QDeclarativeView::rootContext() const -{ - Q_D(const QDeclarativeView); - return d->engine->rootContext(); -} - -/*! - \enum QDeclarativeView::Status - Specifies the loading status of the QDeclarativeView. - - \value Null This QDeclarativeView has no source set. - \value Ready This QDeclarativeView has loaded and created the QML component. - \value Loading This QDeclarativeView is loading network data. - \value Error One or more errors has occurred. Call errors() to retrieve a list - of errors. -*/ - -/*! \enum QDeclarativeView::ResizeMode - - This enum specifies how to resize the view. - - \value SizeViewToRootObject The view resizes with the root item in the QML. - \value SizeRootObjectToView The view will automatically resize the root item to the size of the view. -*/ - -/*! - \property QDeclarativeView::status - The component's current \l{QDeclarativeView::Status} {status}. -*/ - -QDeclarativeView::Status QDeclarativeView::status() const -{ - Q_D(const QDeclarativeView); - if (!d->component) - return QDeclarativeView::Null; - - return QDeclarativeView::Status(d->component->status()); -} - -/*! - Return the list of errors that occurred during the last compile or create - operation. When the status is not Error, an empty list is returned. -*/ -QList<QDeclarativeError> QDeclarativeView::errors() const -{ - Q_D(const QDeclarativeView); - if (d->component) - return d->component->errors(); - return QList<QDeclarativeError>(); -} - -/*! - \property QDeclarativeView::resizeMode - \brief whether the view should resize the canvas contents - - If this property is set to SizeViewToRootObject (the default), the view - resizes with the root item in the QML. - - If this property is set to SizeRootObjectToView, the view will - automatically resize the root item. - - Regardless of this property, the sizeHint of the view - is the initial size of the root item. Note though that - since QML may load dynamically, that size may change. -*/ - -void QDeclarativeView::setResizeMode(ResizeMode mode) -{ - Q_D(QDeclarativeView); - if (d->resizeMode == mode) - return; - - if (d->declarativeItemRoot) { - if (d->resizeMode == SizeViewToRootObject) { - QDeclarativeItemPrivate *p = - static_cast<QDeclarativeItemPrivate *>(QGraphicsItemPrivate::get(d->declarativeItemRoot)); - p->removeItemChangeListener(d, QDeclarativeItemPrivate::Geometry); - } - } else if (d->graphicsWidgetRoot) { - if (d->resizeMode == QDeclarativeView::SizeViewToRootObject) { - d->graphicsWidgetRoot->removeEventFilter(this); - } - } - - d->resizeMode = mode; - if (d->root) { - d->initResize(); - } -} - -void QDeclarativeViewPrivate::initResize() -{ - Q_Q(QDeclarativeView); - if (declarativeItemRoot) { - if (resizeMode == QDeclarativeView::SizeViewToRootObject) { - QDeclarativeItemPrivate *p = - static_cast<QDeclarativeItemPrivate *>(QGraphicsItemPrivate::get(declarativeItemRoot)); - p->addItemChangeListener(this, QDeclarativeItemPrivate::Geometry); - } - } else if (graphicsWidgetRoot) { - if (resizeMode == QDeclarativeView::SizeViewToRootObject) { - graphicsWidgetRoot->installEventFilter(q); - } - } - updateSize(); -} - -void QDeclarativeViewPrivate::updateSize() -{ - Q_Q(QDeclarativeView); - if (!root) - return; - if (declarativeItemRoot) { - if (resizeMode == QDeclarativeView::SizeViewToRootObject) { - QSize newSize = QSize(declarativeItemRoot->width(), declarativeItemRoot->height()); - if (newSize.isValid() && newSize != q->size()) { - q->resize(newSize); - } - } else if (resizeMode == QDeclarativeView::SizeRootObjectToView) { - if (!qFuzzyCompare(q->width(), declarativeItemRoot->width())) - declarativeItemRoot->setWidth(q->width()); - if (!qFuzzyCompare(q->height(), declarativeItemRoot->height())) - declarativeItemRoot->setHeight(q->height()); - } - } else if (graphicsWidgetRoot) { - if (resizeMode == QDeclarativeView::SizeViewToRootObject) { - QSize newSize = QSize(graphicsWidgetRoot->size().width(), graphicsWidgetRoot->size().height()); - if (newSize.isValid() && newSize != q->size()) { - q->resize(newSize); - } - } else if (resizeMode == QDeclarativeView::SizeRootObjectToView) { - QSizeF newSize = QSize(q->size().width(), q->size().height()); - if (newSize.isValid() && newSize != graphicsWidgetRoot->size()) { - graphicsWidgetRoot->resize(newSize); - } - } - } - q->updateGeometry(); -} - -QSize QDeclarativeViewPrivate::rootObjectSize() const -{ - QSize rootObjectSize(0,0); - int widthCandidate = -1; - int heightCandidate = -1; - if (root) { - QSizeF size = root->boundingRect().size(); - widthCandidate = size.width(); - heightCandidate = size.height(); - } - if (widthCandidate > 0) { - rootObjectSize.setWidth(widthCandidate); - } - if (heightCandidate > 0) { - rootObjectSize.setHeight(heightCandidate); - } - return rootObjectSize; -} - -QDeclarativeView::ResizeMode QDeclarativeView::resizeMode() const -{ - Q_D(const QDeclarativeView); - return d->resizeMode; -} - -/*! - \internal - */ -void QDeclarativeView::continueExecute() -{ - Q_D(QDeclarativeView); - disconnect(d->component, SIGNAL(statusChanged(QDeclarativeComponent::Status)), this, SLOT(continueExecute())); - - if (d->component->isError()) { - QList<QDeclarativeError> errorList = d->component->errors(); - foreach (const QDeclarativeError &error, errorList) { - qWarning() << error; - } - emit statusChanged(status()); - return; - } - - QObject *obj = d->component->create(); - - if(d->component->isError()) { - QList<QDeclarativeError> errorList = d->component->errors(); - foreach (const QDeclarativeError &error, errorList) { - qWarning() << error; - } - emit statusChanged(status()); - return; - } - - setRootObject(obj); - emit statusChanged(status()); -} - -/*! - \internal -*/ -void QDeclarativeView::setRootObject(QObject *obj) -{ - Q_D(QDeclarativeView); - if (d->root == obj || !scene()) - return; - if (QDeclarativeItem *declarativeItem = qobject_cast<QDeclarativeItem *>(obj)) { - scene()->addItem(declarativeItem); - d->root = declarativeItem; - d->declarativeItemRoot = declarativeItem; - } else if (QGraphicsObject *graphicsObject = qobject_cast<QGraphicsObject *>(obj)) { - scene()->addItem(graphicsObject); - d->root = graphicsObject; - if (graphicsObject->isWidget()) { - d->graphicsWidgetRoot = static_cast<QGraphicsWidget*>(graphicsObject); - } else { - qWarning() << "QDeclarativeView::resizeMode is not honored for components of type QGraphicsObject"; - } - } else if (obj) { - qWarning() << "QDeclarativeView only supports loading of root objects that derive from QGraphicsObject"; - if (QWidget* widget = qobject_cast<QWidget *>(obj)) { - window()->setAttribute(Qt::WA_OpaquePaintEvent, false); - window()->setAttribute(Qt::WA_NoSystemBackground, false); - if (layout() && layout()->count()) { - // Hide the QGraphicsView in GV mode. - QLayoutItem *item = layout()->itemAt(0); - if (item->widget()) - item->widget()->hide(); - } - widget->setParent(this); - if (isVisible()) { - widget->setVisible(true); - } - resize(widget->size()); - }else{ - delete obj; - } - } - - if (d->root) { - d->initialSize = d->rootObjectSize(); - if ((d->resizeMode == QDeclarativeView::SizeViewToRootObject || !testAttribute(Qt::WA_Resized)) - && d->initialSize != size()) { - if (!(parentWidget() && parentWidget()->layout())) { - resize(d->initialSize); - } - } - emit initialSizeChanged(d->initialSize); - d->initResize(); - } -} - -/*! - \internal - If the \l {QTimerEvent} {timer event} \a e is this - view's resize timer, sceneResized() is emitted. - */ -void QDeclarativeView::timerEvent(QTimerEvent* e) -{ - Q_D(QDeclarativeView); - if (!e || e->timerId() == d->resizetimer.timerId()) { - d->updateSize(); - d->resizetimer.stop(); - } -} - -/*! \internal */ -bool QDeclarativeView::eventFilter(QObject *watched, QEvent *e) -{ - Q_D(QDeclarativeView); - if (watched == d->root && d->resizeMode == SizeViewToRootObject) { - if (d->graphicsWidgetRoot) { - if (e->type() == QEvent::GraphicsSceneResize) { - d->updateSize(); - } - } - } - return QGraphicsView::eventFilter(watched, e); -} - -/*! - \internal - Preferred size follows the root object geometry. -*/ -QSize QDeclarativeView::sizeHint() const -{ - Q_D(const QDeclarativeView); - QSize rootObjectSize = d->rootObjectSize(); - if (rootObjectSize.isEmpty()) { - return size(); - } else { - return rootObjectSize; - } -} - -/*! - Returns the initial size of the root object -*/ -QSize QDeclarativeView::initialSize() const -{ - Q_D(const QDeclarativeView); - return d->initialSize; -} - -/*! - Returns the view's root \l {QGraphicsObject} {item}. - */ -QGraphicsObject *QDeclarativeView::rootObject() const -{ - Q_D(const QDeclarativeView); - return d->root; -} - -/*! - \internal - This function handles the \l {QResizeEvent} {resize event} - \a e. - */ -void QDeclarativeView::resizeEvent(QResizeEvent *e) -{ - Q_D(QDeclarativeView); - if (d->resizeMode == SizeRootObjectToView) { - d->updateSize(); - } - if (d->declarativeItemRoot) { - setSceneRect(QRectF(0, 0, d->declarativeItemRoot->width(), d->declarativeItemRoot->height())); - } else if (d->root) { - setSceneRect(d->root->boundingRect()); - } else { - setSceneRect(rect()); - } - emit sceneResized(e->size()); - QGraphicsView::resizeEvent(e); -} - -/*! - \internal -*/ -void QDeclarativeView::paintEvent(QPaintEvent *event) -{ - Q_D(QDeclarativeView); - - QDeclarativeDebugTrace::addEvent(QDeclarativeDebugTrace::FramePaint); - QDeclarativeDebugTrace::startRange(QDeclarativeDebugTrace::Painting); - - int time = 0; - if (frameRateDebug()) - time = d->frameTimer.restart(); - - QGraphicsView::paintEvent(event); - - QDeclarativeDebugTrace::endRange(QDeclarativeDebugTrace::Painting); - - if (frameRateDebug()) - qDebug() << "paintEvent:" << d->frameTimer.elapsed() << "time since last frame:" << time; - -#if QT_SHOW_DECLARATIVEVIEW_FPS - static QTime timer; - static int frames; - - if (frames == 0) { - timer.start(); - } else if (timer.elapsed() > 5000) { - qreal avgtime = timer.elapsed() / (qreal) frames; - qDebug("Average time per frame: %f ms (%i fps)", avgtime, int(1000 / avgtime)); - timer.start(); - frames = 0; - } - ++frames; - scene()->update(); -#endif - -} - -QDeclarativeItem * QDeclarativeView::accessibleRootItem() const -{ - Q_D(const QDeclarativeView); - return d->declarativeItemRoot; -} - -QT_END_NAMESPACE |