diff options
Diffstat (limited to 'src/declarative/graphicsitems/qdeclarativepathview.cpp')
| -rw-r--r-- | src/declarative/graphicsitems/qdeclarativepathview.cpp | 222 |
1 files changed, 148 insertions, 74 deletions
diff --git a/src/declarative/graphicsitems/qdeclarativepathview.cpp b/src/declarative/graphicsitems/qdeclarativepathview.cpp index f1b0213..cc17157 100644 --- a/src/declarative/graphicsitems/qdeclarativepathview.cpp +++ b/src/declarative/graphicsitems/qdeclarativepathview.cpp @@ -44,7 +44,6 @@ #include <qdeclarativestate_p.h> #include <qdeclarativeopenmetaobject_p.h> - #include <QDebug> #include <QEvent> #include <qlistmodelinterface_p.h> @@ -64,48 +63,31 @@ inline qreal qmlMod(qreal x, qreal y) return fmod(x, y); } +static QDeclarativeOpenMetaObjectType *qPathViewAttachedType = 0; -class QDeclarativePathViewAttached : public QObject +QDeclarativePathViewAttached::QDeclarativePathViewAttached(QObject *parent) +: QObject(parent), m_view(0), m_onPath(false), m_isCurrent(false) { - Q_OBJECT - - Q_PROPERTY(bool onPath READ isOnPath NOTIFY onPathChanged) -public: - QDeclarativePathViewAttached(QObject *parent) - : QObject(parent), mo(new QDeclarativeOpenMetaObject(this)), onPath(false) - { - } - - ~QDeclarativePathViewAttached() - { - QDeclarativePathView::attachedProperties.remove(parent()); - } - - QVariant value(const QByteArray &name) const - { - return mo->value(name); - } - void setValue(const QByteArray &name, const QVariant &val) - { - mo->setValue(name, val); - } - - bool isOnPath() const { return onPath; } - void setOnPath(bool on) { - if (on != onPath) { - onPath = on; - emit onPathChanged(); - } + if (qPathViewAttachedType) { + m_metaobject = new QDeclarativeOpenMetaObject(this, qPathViewAttachedType); + m_metaobject->setCached(true); + } else { + m_metaobject = new QDeclarativeOpenMetaObject(this); } +} -Q_SIGNALS: - void onPathChanged(); - -private: - QDeclarativeOpenMetaObject *mo; - bool onPath; -}; +QDeclarativePathViewAttached::~QDeclarativePathViewAttached() +{ +} +QVariant QDeclarativePathViewAttached::value(const QByteArray &name) const +{ + return m_metaobject->value(name); +} +void QDeclarativePathViewAttached::setValue(const QByteArray &name, const QVariant &val) +{ + m_metaobject->setValue(name, val); +} QDeclarativeItem *QDeclarativePathViewPrivate::getItem(int modelIndex) { @@ -113,8 +95,20 @@ QDeclarativeItem *QDeclarativePathViewPrivate::getItem(int modelIndex) requestedIndex = modelIndex; QDeclarativeItem *item = model->item(modelIndex, false); if (item) { - if (QObject *obj = QDeclarativePathView::qmlAttachedProperties(item)) - static_cast<QDeclarativePathViewAttached *>(obj)->setOnPath(true); + if (!attType) { + // pre-create one metatype to share with all attached objects + attType = new QDeclarativeOpenMetaObjectType(&QDeclarativePathViewAttached::staticMetaObject, qmlEngine(q)); + foreach(const QString &attr, path->attributes()) { + attType->createProperty(attr.toUtf8()); + } + } + qPathViewAttachedType = attType; + QDeclarativePathViewAttached *att = static_cast<QDeclarativePathViewAttached *>(qmlAttachedPropertiesObject<QDeclarativePathView>(item)); + qPathViewAttachedType = 0; + if (att) { + att->m_view = q; + att->setOnPath(true); + } item->setParentItem(q); } requestedIndex = -1; @@ -125,14 +119,26 @@ void QDeclarativePathViewPrivate::releaseItem(QDeclarativeItem *item) { if (!item || !model) return; - if (QObject *obj = QDeclarativePathView::qmlAttachedProperties(item)) - static_cast<QDeclarativePathViewAttached *>(obj)->setOnPath(false); - if (model->release(item) == 0) { - if (QObject *obj = QDeclarativePathView::qmlAttachedProperties(item)) - static_cast<QDeclarativePathViewAttached *>(obj)->setOnPath(false); + if (QDeclarativePathViewAttached *att = attached(item)) + att->setOnPath(false); + model->release(item); +} + +QDeclarativePathViewAttached *QDeclarativePathViewPrivate::attached(QDeclarativeItem *item) +{ + return static_cast<QDeclarativePathViewAttached *>(qmlAttachedPropertiesObject<QDeclarativePathView>(item, false)); +} + +void QDeclarativePathViewPrivate::clear() +{ + for (int i=0; i<items.count(); i++){ + QDeclarativeItem *p = items[i]; + releaseItem(p); } + items.clear(); } + /*! \qmlclass PathView QDeclarativePathView \since 4.7 @@ -147,6 +153,11 @@ void QDeclarativePathViewPrivate::releaseItem(QDeclarativeItem *item) \image pathview.gif + Note that views do not enable \e clip automatically. If the view + is not clipped by another item or the screen, it will be necessary + to set \e {clip: true} in order to have the out of view items clipped + nicely. + \sa Path */ @@ -160,6 +171,9 @@ QDeclarativePathView::QDeclarativePathView(QDeclarativeItem *parent) QDeclarativePathView::~QDeclarativePathView() { Q_D(QDeclarativePathView); + d->clear(); + if (d->attType) + d->attType->release(); if (d->ownModel) delete d->model; } @@ -185,6 +199,15 @@ QDeclarativePathView::~QDeclarativePathView() */ /*! + \qmlattachedproperty bool PathView::isCurrentItem + This attached property is true if this delegate is the current item; otherwise false. + + It is attached to each instance of the delegate. + + This property may be used to adjust the appearance of the current item. +*/ + +/*! \qmlproperty model PathView::model This property holds the model providing data for the view. @@ -203,6 +226,9 @@ QVariant QDeclarativePathView::model() const void QDeclarativePathView::setModel(const QVariant &model) { Q_D(QDeclarativePathView); + if (d->modelVariant == model) + return; + if (d->model) { disconnect(d->model, SIGNAL(itemsInserted(int,int)), this, SLOT(itemsInserted(int,int))); disconnect(d->model, SIGNAL(itemsRemoved(int,int)), this, SLOT(itemsRemoved(int,int))); @@ -242,6 +268,7 @@ void QDeclarativePathView::setModel(const QVariant &model) d->pathOffset = 0; d->regenerate(); d->fixOffset(); + emit modelChanged(); } /*! @@ -269,9 +296,19 @@ QDeclarativePath *QDeclarativePathView::path() const void QDeclarativePathView::setPath(QDeclarativePath *path) { Q_D(QDeclarativePathView); + if (d->path == path) + return; + if (d->path) + disconnect(d->path, SIGNAL(changed()), this, SLOT(refill())); d->path = path; connect(d->path, SIGNAL(changed()), this, SLOT(refill())); + d->clear(); + if (d->attType) { + d->attType->release(); + d->attType = 0; + } d->regenerate(); + emit pathChanged(); } /*! @@ -290,12 +327,25 @@ void QDeclarativePathView::setCurrentIndex(int idx) if (d->model && d->model->count()) idx = qAbs(idx % d->model->count()); if (d->model && idx != d->currentIndex) { + if (d->model->count()) { + int itemIndex = (d->currentIndex - d->firstIndex + d->model->count()) % d->model->count(); + if (itemIndex < d->items.count()) { + if (QDeclarativeItem *item = d->items.at(d->currentIndex)) { + if (QDeclarativePathViewAttached *att = d->attached(item)) + att->setIsCurrentItem(false); + } + } + } d->currentIndex = idx; if (d->model->count()) { d->snapToCurrent(); int itemIndex = (idx - d->firstIndex + d->model->count()) % d->model->count(); - if (itemIndex < d->items.count()) - d->items.at(itemIndex)->setFocus(true); + if (itemIndex < d->items.count()) { + QDeclarativeItem *item = d->items.at(itemIndex); + item->setFocus(true); + if (QDeclarativePathViewAttached *att = d->attached(item)) + att->setIsCurrentItem(true); + } } emit currentIndexChanged(); } @@ -333,7 +383,7 @@ void QDeclarativePathViewPrivate::setOffset(qreal o) /*! \qmlproperty real PathView::snapPosition - This property determines the position (0-100) the nearest item will snap to. + This property determines the position (0.0-1.0) the nearest item will snap to. */ qreal QDeclarativePathView::snapPosition() const { @@ -344,8 +394,12 @@ qreal QDeclarativePathView::snapPosition() const void QDeclarativePathView::setSnapPosition(qreal pos) { Q_D(QDeclarativePathView); - d->snapPos = pos/100; + qreal normalizedPos = pos - int(pos); + if (qFuzzyCompare(normalizedPos, d->snapPos)) + return; + d->snapPos = normalizedPos; d->fixOffset(); + emit snapPositionChanged(); } /*! @@ -365,7 +419,10 @@ qreal QDeclarativePathView::dragMargin() const void QDeclarativePathView::setDragMargin(qreal dragMargin) { Q_D(QDeclarativePathView); + if (d->dragMargin == dragMargin) + return; d->dragMargin = dragMargin; + emit dragMarginChanged(); } /*! @@ -392,16 +449,19 @@ QDeclarativeComponent *QDeclarativePathView::delegate() const return 0; } -void QDeclarativePathView::setDelegate(QDeclarativeComponent *c) +void QDeclarativePathView::setDelegate(QDeclarativeComponent *delegate) { Q_D(QDeclarativePathView); + if (delegate == this->delegate()) + return; if (!d->ownModel) { d->model = new QDeclarativeVisualDataModel(qmlContext(this)); d->ownModel = true; } if (QDeclarativeVisualDataModel *dataModel = qobject_cast<QDeclarativeVisualDataModel*>(d->model)) { - dataModel->setDelegate(c); + dataModel->setDelegate(delegate); d->regenerate(); + emit delegateChanged(); } } @@ -422,6 +482,7 @@ void QDeclarativePathView::setPathItemCount(int i) return; d->pathItems = i; d->regenerate(); + pathItemCountChanged(); } QPointF QDeclarativePathViewPrivate::pointNear(const QPointF &point, qreal *nearPercent) const @@ -631,11 +692,7 @@ void QDeclarativePathViewPrivate::regenerate() if (!q->isComponentComplete()) return; - for (int i=0; i<items.count(); i++){ - QDeclarativeItem *p = items[i]; - releaseItem(p); - } - items.clear(); + clear(); if (!isValid()) return; @@ -655,18 +712,25 @@ void QDeclarativePathViewPrivate::regenerate() } items.append(item); item->setZValue(i); + qreal percent = i * (100. / numItems) + _offset; + percent = qAbs(qmlMod(percent, qreal(100.0))/100.0); + updateItem(item, percent); model->completeItem(); - if (currentIndex == index) + if (currentIndex == index) { item->setFocus(true); + if (QDeclarativePathViewAttached *att = attached(item)) + att->setIsCurrentItem(true); + } } - q->refill(); + if (pathItems != -1) + q->refill(); } void QDeclarativePathViewPrivate::updateItem(QDeclarativeItem *item, qreal percent) { - if (QObject *obj = QDeclarativePathView::qmlAttachedProperties(item)) { + if (QDeclarativePathViewAttached *att = attached(item)) { foreach(const QString &attr, path->attributes()) - static_cast<QDeclarativePathViewAttached *>(obj)->setValue(attr.toUtf8(), path->attributeAt(attr, percent)); + att->setValue(attr.toUtf8(), path->attributeAt(attr, percent)); } QPointF pf = path->pointAt(percent); item->setX(pf.x() - item->width()*item->scale()/2); @@ -717,8 +781,11 @@ void QDeclarativePathView::refill() QDeclarativeItem *item = d->getItem(index); item->setZValue(wrapIndex); d->model->completeItem(); - if (d->currentIndex == index) + if (d->currentIndex == index) { item->setFocus(true); + if (QDeclarativePathViewAttached *att = d->attached(item)) + att->setIsCurrentItem(true); + } d->items << item; d->pathOffset++; d->pathOffset=d->pathOffset % d->items.count(); @@ -734,8 +801,11 @@ void QDeclarativePathView::refill() QDeclarativeItem *item = d->getItem(d->firstIndex); item->setZValue(d->firstIndex); d->model->completeItem(); - if (d->currentIndex == d->firstIndex) + if (d->currentIndex == d->firstIndex) { item->setFocus(true); + if (QDeclarativePathViewAttached *att = d->attached(item)) + att->setIsCurrentItem(true); + } d->items.prepend(item); d->pathOffset--; if (d->pathOffset < 0) @@ -891,10 +961,21 @@ void QDeclarativePathViewPrivate::updateCurrent() return; int idx = calcCurrentIndex(); if (model && idx != currentIndex) { + int itemIndex = (currentIndex - firstIndex + model->count()) % model->count(); + if (itemIndex < items.count()) { + if (QDeclarativeItem *item = items.at(itemIndex)) { + if (QDeclarativePathViewAttached *att = attached(item)) + att->setIsCurrentItem(false); + } + } currentIndex = idx; - int itemIndex = (idx - firstIndex + model->count()) % model->count(); - if (itemIndex < items.count()) - items.at(itemIndex)->setFocus(true); + itemIndex = (idx - firstIndex + model->count()) % model->count(); + if (itemIndex < items.count()) { + QDeclarativeItem *item = items.at(itemIndex); + item->setFocus(true); + if (QDeclarativePathViewAttached *att = attached(item)) + att->setIsCurrentItem(true); + } emit q->currentIndexChanged(); } } @@ -975,17 +1056,10 @@ void QDeclarativePathViewPrivate::snapToCurrent() } } -QHash<QObject*, QObject*> QDeclarativePathView::attachedProperties; -QObject *QDeclarativePathView::qmlAttachedProperties(QObject *obj) +QDeclarativePathViewAttached *QDeclarativePathView::qmlAttachedProperties(QObject *obj) { - QObject *rv = attachedProperties.value(obj); - if (!rv) { - rv = new QDeclarativePathViewAttached(obj); - attachedProperties.insert(obj, rv); - } - return rv; + return new QDeclarativePathViewAttached(obj); } QT_END_NAMESPACE -#include <qdeclarativepathview.moc> |