diff options
author | Charles Yin <charles.yin@nokia.com> | 2012-05-03 11:36:36 +1000 |
---|---|---|
committer | Qt by Nokia <qt-info@nokia.com> | 2012-05-23 05:28:54 +0200 |
commit | efa9de71119853f89b4b175e7d537fbcc31a4848 (patch) | |
tree | 97ddef30cddfb41e708dea90e92bb1f247bc73be /src/quick/items/qquickview.cpp | |
parent | 8189f48ab2006c8cdd6e0f2683bed7b6a66a33fc (diff) |
Introduce a new constructor to QQuickView
Make it possible let QQuickView use an existing qml engine
and multiple QQuickView objects can share one QQmlEngine instance.
Change-Id: I035d1c15155be22f1131b504c40cf4ffb5da0f45
Reviewed-by: Glenn Watson <glenn.watson@nokia.com>
Diffstat (limited to 'src/quick/items/qquickview.cpp')
-rw-r--r-- | src/quick/items/qquickview.cpp | 74 |
1 files changed, 61 insertions, 13 deletions
diff --git a/src/quick/items/qquickview.cpp b/src/quick/items/qquickview.cpp index 03a8e6ee89..b6b6f41a71 100644 --- a/src/quick/items/qquickview.cpp +++ b/src/quick/items/qquickview.cpp @@ -54,14 +54,19 @@ #include <private/qqmlengine_p.h> #include <QtCore/qbasictimer.h> - QT_BEGIN_NAMESPACE -void QQuickViewPrivate::init() +void QQuickViewPrivate::init(QQmlEngine* e) { Q_Q(QQuickView); - engine.setIncubationController(q->incubationController()); + engine = e; + + if (engine.isNull()) + engine = new QQmlEngine(q); + + if (!engine.data()->incubationController()) + engine.data()->setIncubationController(q->incubationController()); if (QQmlDebugService::isDebuggingEnabled()) QQmlInspectorService::instance()->addView(q); @@ -83,6 +88,11 @@ QQuickViewPrivate::~QQuickViewPrivate() void QQuickViewPrivate::execute() { Q_Q(QQuickView); + if (!engine) { + qWarning() << "QQuickView: invalid qml engine."; + return; + } + if (root) { delete root; root = 0; @@ -92,8 +102,8 @@ void QQuickViewPrivate::execute() component = 0; } if (!source.isEmpty()) { - QML_MEMORY_SCOPE_URL(engine.baseUrl().resolved(source)); - component = new QQmlComponent(&engine, source, q); + QML_MEMORY_SCOPE_URL(engine.data()->baseUrl().resolved(source)); + component = new QQmlComponent(engine.data(), source, q); if (!component->isLoading()) { q->continueExecute(); } else { @@ -153,9 +163,12 @@ void QQuickViewPrivate::itemGeometryChanged(QQuickItem *resizeItem, const QRectF */ /*! - \fn QQuickView::QQuickView(QWindow *parent) + \fn QQuickView::QQuickView(QWindow *parent, Qt::WindowFlags f) - Constructs a QQuickView with the given \a parent. + Constructs a QQuickView with the given \a parent and window flags \a f. + The default value of \a parent is 0, default window flags \a f is Qt::Window. + + \sa Qt::WindowFlags */ QQuickView::QQuickView(QWindow *parent, Qt::WindowFlags f) : QQuickCanvas(*(new QQuickViewPrivate), parent) @@ -165,9 +178,12 @@ QQuickView::QQuickView(QWindow *parent, Qt::WindowFlags f) } /*! - \fn QQuickView::QQuickView(const QUrl &source, QWidget *parent) + \fn QQuickView::QQuickView(const QUrl &source, QWidget *parent, Qt::WindowFlags f) + + Constructs a QQuickView with the given QML \a source, \a parent and a window flags \a f. + The default value of \a parent is 0, default window flags \a f is Qt::Window. - Constructs a QQuickView with the given QML \a source and \a parent. + \sa Qt::WindowFlags */ QQuickView::QQuickView(const QUrl &source, QWindow *parent, Qt::WindowFlags f) : QQuickCanvas(*(new QQuickViewPrivate), parent) @@ -177,6 +193,26 @@ QQuickView::QQuickView(const QUrl &source, QWindow *parent, Qt::WindowFlags f) setSource(source); } +/*! + \fn QQuickView::QQuickView(QQmlEngine* engine, QWindow *parent, Qt::WindowFlags f) + + Constructs a QQuickView with the given QML \a engine, \a parent and a window flags \a f. + The default value of \a parent is 0, default window flags \a f is Qt::Window. + + Note: In this case, the QQuickView does not own the given \a engine object; + it is the caller's responsibility to destroy the engine. If the \a engine is deleted + before the view \a status() will return \a QQuickView::Error. + + \sa Status, status(), errors(), Qt::WindowFlags +*/ +QQuickView::QQuickView(QQmlEngine* engine, QWindow *parent, Qt::WindowFlags f) + : QQuickCanvas(*(new QQuickViewPrivate), parent) +{ + Q_ASSERT(engine); + setWindowFlags(f); + d_func()->init(engine); +} + QQuickView::~QQuickView() { } @@ -224,7 +260,7 @@ QUrl QQuickView::source() const QQmlEngine* QQuickView::engine() const { Q_D(const QQuickView); - return const_cast<QQmlEngine *>(&d->engine); + return d->engine ? const_cast<QQmlEngine *>(d->engine.data()) : 0; } /*! @@ -237,7 +273,7 @@ QQmlEngine* QQuickView::engine() const QQmlContext* QQuickView::rootContext() const { Q_D(const QQuickView); - return d->engine.rootContext(); + return d->engine ? d->engine.data()->rootContext() : 0; } /*! @@ -267,6 +303,9 @@ QQmlContext* QQuickView::rootContext() const QQuickView::Status QQuickView::status() const { Q_D(const QQuickView); + if (!d->engine) + return QQuickView::Error; + if (!d->component) return QQuickView::Null; @@ -280,9 +319,18 @@ QQuickView::Status QQuickView::status() const QList<QQmlError> QQuickView::errors() const { Q_D(const QQuickView); + QList<QQmlError> errs; + if (d->component) - return d->component->errors(); - return QList<QQmlError>(); + errs = d->component->errors(); + + if (!d->engine) { + QQmlError error; + error.setDescription(QLatin1String("QQuickView: invalid qml engine.")); + errs << error; + } + + return errs; } /*! |