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Diffstat (limited to 'src/declarative/graphicsitems/qmlgraphicsvisualitemmodel.cpp')
| -rw-r--r-- | src/declarative/graphicsitems/qmlgraphicsvisualitemmodel.cpp | 1103 |
1 files changed, 0 insertions, 1103 deletions
diff --git a/src/declarative/graphicsitems/qmlgraphicsvisualitemmodel.cpp b/src/declarative/graphicsitems/qmlgraphicsvisualitemmodel.cpp deleted file mode 100644 index 1928195..0000000 --- a/src/declarative/graphicsitems/qmlgraphicsvisualitemmodel.cpp +++ /dev/null @@ -1,1103 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtDeclarative module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** No Commercial Usage -** This file contains pre-release code and may not be distributed. -** You may use this file in accordance with the terms and conditions -** contained in the Technology Preview License Agreement accompanying -** this package. -** -** GNU Lesser General Public License Usage -** Alternatively, 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. -** -** If you have questions regarding the use of this file, please contact -** Nokia at qt-info@nokia.com. -** -** -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qmlgraphicsvisualitemmodel_p.h" - -#include "qmlgraphicsitem.h" - -#include <qmlcontext.h> -#include <qmlengine.h> -#include <qmlexpression.h> -#include <qmlpackage_p.h> -#include <qmlopenmetaobject_p.h> -#include <qmllistaccessor_p.h> -#include <qmlinfo.h> -#include <qmldeclarativedata_p.h> -#include <qmlpropertycache_p.h> -#include <qmlguard_p.h> - -#include <qlistmodelinterface_p.h> -#include <qhash.h> -#include <qlist.h> -#include <qmetaobjectbuilder_p.h> -#include <QtCore/qdebug.h> - -#include <private/qobject_p.h> - -QT_BEGIN_NAMESPACE - -QHash<QObject*, QmlGraphicsVisualItemModelAttached*> QmlGraphicsVisualItemModelAttached::attachedProperties; - - -class QmlGraphicsVisualItemModelPrivate : public QObjectPrivate -{ - Q_DECLARE_PUBLIC(QmlGraphicsVisualItemModel) -public: - QmlGraphicsVisualItemModelPrivate() : QObjectPrivate() {} - - static void children_append(QmlListProperty<QmlGraphicsItem> *prop, QmlGraphicsItem *item) { - item->QObject::setParent(prop->object); - static_cast<QmlGraphicsVisualItemModelPrivate *>(prop->data)->children.append(item); - static_cast<QmlGraphicsVisualItemModelPrivate *>(prop->data)->itemAppended(); - static_cast<QmlGraphicsVisualItemModelPrivate *>(prop->data)->emitChildrenChanged(); - } - - void itemAppended() { - Q_Q(QmlGraphicsVisualItemModel); - QmlGraphicsVisualItemModelAttached *attached = QmlGraphicsVisualItemModelAttached::properties(children.last()); - attached->setIndex(children.count()-1); - emit q->itemsInserted(children.count()-1, 1); - emit q->countChanged(); - } - - void emitChildrenChanged() { - Q_Q(QmlGraphicsVisualItemModel); - emit q->childrenChanged(); - } - - QList<QmlGraphicsItem *> children; -}; - - -/*! - \qmlclass VisualItemModel QmlGraphicsVisualItemModel - \since 4.7 - \brief The VisualItemModel allows items to be provided to a view. - - The children of the VisualItemModel are provided in a model which - can be used in a view. Note that no delegate should be - provided to a view since the VisualItemModel contains the - visual delegate (items). - - An item can determine its index within the - model via the VisualItemModel.index attached property. - - The example below places three colored rectangles in a ListView. - \code - Item { - VisualItemModel { - id: itemModel - Rectangle { height: 30; width: 80; color: "red" } - Rectangle { height: 30; width: 80; color: "green" } - Rectangle { height: 30; width: 80; color: "blue" } - } - - ListView { - anchors.fill: parent - model: itemModel - } - } - \endcode -*/ -QmlGraphicsVisualItemModel::QmlGraphicsVisualItemModel() - : QmlGraphicsVisualModel(*(new QmlGraphicsVisualItemModelPrivate)) -{ -} - -QmlListProperty<QmlGraphicsItem> QmlGraphicsVisualItemModel::children() -{ - Q_D(QmlGraphicsVisualItemModel); - return QmlListProperty<QmlGraphicsItem>(this, d, QmlGraphicsVisualItemModelPrivate::children_append); -} - -/*! - \qmlproperty int VisualItemModel::count - - The number of items in the model. This property is readonly. -*/ -int QmlGraphicsVisualItemModel::count() const -{ - Q_D(const QmlGraphicsVisualItemModel); - return d->children.count(); -} - -bool QmlGraphicsVisualItemModel::isValid() const -{ - return true; -} - -QmlGraphicsItem *QmlGraphicsVisualItemModel::item(int index, bool) -{ - Q_D(QmlGraphicsVisualItemModel); - return d->children.at(index); -} - -QmlGraphicsVisualModel::ReleaseFlags QmlGraphicsVisualItemModel::release(QmlGraphicsItem *) -{ - // Nothing to do - return 0; -} - -void QmlGraphicsVisualItemModel::completeItem() -{ - // Nothing to do -} - -QString QmlGraphicsVisualItemModel::stringValue(int index, const QString &name) -{ - Q_D(QmlGraphicsVisualItemModel); - if (index < 0 || index >= d->children.count()) - return QString(); - return QmlEngine::contextForObject(d->children.at(index))->contextProperty(name).toString(); -} - -QVariant QmlGraphicsVisualItemModel::evaluate(int index, const QString &expression, QObject *objectContext) -{ - Q_D(QmlGraphicsVisualItemModel); - if (index < 0 || index >= d->children.count()) - return QVariant(); - QmlContext *ccontext = qmlContext(this); - QmlContext *ctxt = new QmlContext(ccontext); - ctxt->addDefaultObject(d->children.at(index)); - QmlExpression e(ctxt, expression, objectContext); - e.setTrackChange(false); - QVariant value = e.value(); - delete ctxt; - return value; -} - -int QmlGraphicsVisualItemModel::indexOf(QmlGraphicsItem *item, QObject *) const -{ - Q_D(const QmlGraphicsVisualItemModel); - return d->children.indexOf(item); -} - -QmlGraphicsVisualItemModelAttached *QmlGraphicsVisualItemModel::qmlAttachedProperties(QObject *obj) -{ - return QmlGraphicsVisualItemModelAttached::properties(obj); -} - -//============================================================================ - -class VDMDelegateDataType : public QmlOpenMetaObjectType -{ -public: - VDMDelegateDataType(const QMetaObject *base, QmlEngine *engine) : QmlOpenMetaObjectType(base, engine) {} - - void propertyCreated(int, QMetaPropertyBuilder &prop) { - prop.setWritable(false); - } -}; - -class QmlGraphicsVisualDataModelParts; -class QmlGraphicsVisualDataModelData; -class QmlGraphicsVisualDataModelPrivate : public QObjectPrivate -{ -public: - QmlGraphicsVisualDataModelPrivate(QmlContext *); - - static QmlGraphicsVisualDataModelPrivate *get(QmlGraphicsVisualDataModel *m) { - return static_cast<QmlGraphicsVisualDataModelPrivate *>(QObjectPrivate::get(m)); - } - - QmlGuard<QListModelInterface> m_listModelInterface; - QmlGuard<QAbstractItemModel> m_abstractItemModel; - QmlGuard<QmlGraphicsVisualDataModel> m_visualItemModel; - QString m_part; - - QmlComponent *m_delegate; - QmlContext *m_context; - QList<int> m_roles; - QHash<QByteArray,int> m_roleNames; - void ensureRoles() { - if (m_roleNames.isEmpty()) { - if (m_listModelInterface) { - m_roles = m_listModelInterface->roles(); - for (int ii = 0; ii < m_roles.count(); ++ii) - m_roleNames.insert(m_listModelInterface->toString(m_roles.at(ii)).toUtf8(), m_roles.at(ii)); - if (m_roles.count() == 1) - m_roleNames.insert("modelData", m_roles.at(0)); - } else if (m_abstractItemModel) { - for (QHash<int,QByteArray>::const_iterator it = m_abstractItemModel->roleNames().begin(); - it != m_abstractItemModel->roleNames().end(); ++it) { - m_roles.append(it.key()); - m_roleNames.insert(*it, it.key()); - } - if (m_roles.count() == 1) - m_roleNames.insert("modelData", m_roles.at(0)); - } else if (m_listAccessor) { - m_roleNames.insert("modelData", 0); - if (m_listAccessor->type() == QmlListAccessor::Instance) { - if (QObject *object = m_listAccessor->at(0).value<QObject*>()) { - int count = object->metaObject()->propertyCount(); - for (int ii = 1; ii < count; ++ii) { - const QMetaProperty &prop = object->metaObject()->property(ii); - m_roleNames.insert(prop.name(), 0); - } - } - } - } - } - } - - void createMetaData() { - if (!m_metaDataCreated) { - ensureRoles(); - QHash<QByteArray, int>::const_iterator it = m_roleNames.begin(); - while (it != m_roleNames.end()) { - m_delegateDataType->createProperty(it.key()); - ++it; - } - m_metaDataCreated = true; - } - } - - struct ObjectRef { - ObjectRef(QObject *object=0) : obj(object), ref(1) {} - QObject *obj; - int ref; - }; - class Cache : public QHash<int, ObjectRef> { - public: - QObject *getItem(int index) { - QObject *item = 0; - QHash<int,ObjectRef>::iterator it = find(index); - if (it != end()) { - (*it).ref++; - item = (*it).obj; - } - return item; - } - QObject *item(int index) { - QObject *item = 0; - QHash<int, ObjectRef>::const_iterator it = find(index); - if (it != end()) - item = (*it).obj; - return item; - } - void insertItem(int index, QObject *obj) { - insert(index, ObjectRef(obj)); - } - bool releaseItem(QObject *obj) { - QHash<int, ObjectRef>::iterator it = begin(); - for (; it != end(); ++it) { - ObjectRef &objRef = *it; - if (objRef.obj == obj) { - if (--objRef.ref == 0) { - erase(it); - return true; - } - break; - } - } - return false; - } - }; - - int modelCount() const { - if (m_visualItemModel) - return m_visualItemModel->count(); - if (m_listModelInterface) - return m_listModelInterface->count(); - if (m_abstractItemModel) - return m_abstractItemModel->rowCount(); - if (m_listAccessor) - return m_listAccessor->count(); - return 0; - } - - Cache m_cache; - QHash<QObject *, QmlPackage*> m_packaged; - - QmlGraphicsVisualDataModelParts *m_parts; - friend class QmlGraphicsVisualItemParts; - - VDMDelegateDataType *m_delegateDataType; - friend class QmlGraphicsVisualDataModelData; - bool m_metaDataCreated; - bool m_metaDataCacheable; - - QmlGraphicsVisualDataModelData *data(QObject *item); - - QVariant m_modelVariant; - QmlListAccessor *m_listAccessor; -}; - -class QmlGraphicsVisualDataModelDataMetaObject : public QmlOpenMetaObject -{ -public: - QmlGraphicsVisualDataModelDataMetaObject(QObject *parent, QmlOpenMetaObjectType *type) - : QmlOpenMetaObject(parent, type) {} - - virtual QVariant initialValue(int); - virtual int createProperty(const char *, const char *); - -private: - friend class QmlGraphicsVisualDataModelData; - QHash<int,int> roleToProp; -}; - -class QmlGraphicsVisualDataModelData : public QObject -{ -Q_OBJECT -public: - QmlGraphicsVisualDataModelData(int index, QmlGraphicsVisualDataModel *model); - ~QmlGraphicsVisualDataModelData(); - - Q_PROPERTY(int index READ index NOTIFY indexChanged) - int index() const; - void setIndex(int index); - - int propForRole(int) const; - void setValue(int, const QVariant &); - -Q_SIGNALS: - void indexChanged(); - -private: - friend class QmlGraphicsVisualDataModelDataMetaObject; - int m_index; - QmlGuard<QmlGraphicsVisualDataModel> m_model; - QmlGraphicsVisualDataModelDataMetaObject *m_meta; -}; - -int QmlGraphicsVisualDataModelData::propForRole(int id) const -{ - QHash<int,int>::const_iterator it = m_meta->roleToProp.find(id); - if (it != m_meta->roleToProp.end()) - return m_meta->roleToProp[id]; - return -1; -} - -void QmlGraphicsVisualDataModelData::setValue(int id, const QVariant &val) -{ - m_meta->setValue(id, val); -} - -int QmlGraphicsVisualDataModelDataMetaObject::createProperty(const char *name, const char *type) -{ - QmlGraphicsVisualDataModelData *data = - static_cast<QmlGraphicsVisualDataModelData *>(object()); - - if (!data->m_model) - return -1; - - QmlGraphicsVisualDataModelPrivate *model = QmlGraphicsVisualDataModelPrivate::get(data->m_model); - - if ((!model->m_listModelInterface || !model->m_abstractItemModel) && model->m_listAccessor) { - if (model->m_listAccessor->type() == QmlListAccessor::ListProperty) { - model->ensureRoles(); - QObject *object = model->m_listAccessor->at(data->m_index).value<QObject*>(); - if (object && object->property(name).isValid()) - return QmlOpenMetaObject::createProperty(name, type); - } - } - return -1; -} - -QVariant QmlGraphicsVisualDataModelDataMetaObject::initialValue(int propId) -{ - QmlGraphicsVisualDataModelData *data = - static_cast<QmlGraphicsVisualDataModelData *>(object()); - - Q_ASSERT(data->m_model); - QmlGraphicsVisualDataModelPrivate *model = QmlGraphicsVisualDataModelPrivate::get(data->m_model); - - QByteArray propName = name(propId); - if ((!model->m_listModelInterface || !model->m_abstractItemModel) && model->m_listAccessor) { - if (propName == "modelData") { - if (model->m_listAccessor->type() == QmlListAccessor::Instance) { - QObject *object = model->m_listAccessor->at(0).value<QObject*>(); - return object->metaObject()->property(1).read(object); // the first property after objectName - } - return model->m_listAccessor->at(data->m_index); - } else { - // return any property of a single object instance. - QObject *object = model->m_listAccessor->at(data->m_index).value<QObject*>(); - return object->property(propName); - } - } else if (model->m_listModelInterface) { - model->ensureRoles(); - QHash<QByteArray,int>::const_iterator it = model->m_roleNames.find(propName); - if (it != model->m_roleNames.end()) { - roleToProp.insert(*it, propId); - QVariant value = model->m_listModelInterface->data(data->m_index, *it); - return value; - } else if (model->m_roles.count() == 1 && propName == "modelData") { - //for compatability with other lists, assign modelData if there is only a single role - roleToProp.insert(model->m_roles.first(), propId); - QVariant value = model->m_listModelInterface->data(data->m_index, model->m_roles.first()); - return value; - } - } else if (model->m_abstractItemModel) { - model->ensureRoles(); - QHash<QByteArray,int>::const_iterator it = model->m_roleNames.find(propName); - if (it != model->m_roleNames.end()) { - roleToProp.insert(*it, propId); - QModelIndex index = model->m_abstractItemModel->index(data->m_index, 0); - return model->m_abstractItemModel->data(index, *it); - } - } - Q_ASSERT(!"Can never be reached"); - return QVariant(); -} - -QmlGraphicsVisualDataModelData::QmlGraphicsVisualDataModelData(int index, - QmlGraphicsVisualDataModel *model) -: m_index(index), m_model(model), -m_meta(new QmlGraphicsVisualDataModelDataMetaObject(this, QmlGraphicsVisualDataModelPrivate::get(model)->m_delegateDataType)) -{ - QmlGraphicsVisualDataModelPrivate *modelPriv = QmlGraphicsVisualDataModelPrivate::get(model); - if (modelPriv->m_metaDataCacheable) { - if (!modelPriv->m_metaDataCreated) - modelPriv->createMetaData(); - m_meta->setCached(true); - } -} - -QmlGraphicsVisualDataModelData::~QmlGraphicsVisualDataModelData() -{ -} - -int QmlGraphicsVisualDataModelData::index() const -{ - return m_index; -} - -// This is internal only - it should not be set from qml -void QmlGraphicsVisualDataModelData::setIndex(int index) -{ - m_index = index; - emit indexChanged(); -} - -//--------------------------------------------------------------------------- - -class QmlGraphicsVisualDataModelPartsMetaObject : public QmlOpenMetaObject -{ -public: - QmlGraphicsVisualDataModelPartsMetaObject(QObject *parent) - : QmlOpenMetaObject(parent) {} - - virtual void propertyCreated(int, QMetaPropertyBuilder &); - virtual QVariant initialValue(int); -}; - -class QmlGraphicsVisualDataModelParts : public QObject -{ -Q_OBJECT -public: - QmlGraphicsVisualDataModelParts(QmlGraphicsVisualDataModel *parent); - -private: - friend class QmlGraphicsVisualDataModelPartsMetaObject; - QmlGraphicsVisualDataModel *model; -}; - -void QmlGraphicsVisualDataModelPartsMetaObject::propertyCreated(int, QMetaPropertyBuilder &prop) -{ - prop.setWritable(false); -} - -QVariant QmlGraphicsVisualDataModelPartsMetaObject::initialValue(int id) -{ - QmlGraphicsVisualDataModel *m = new QmlGraphicsVisualDataModel; - m->setParent(object()); - m->setPart(QString::fromUtf8(name(id))); - m->setModel(QVariant::fromValue(static_cast<QmlGraphicsVisualDataModelParts *>(object())->model)); - - QVariant var = QVariant::fromValue((QObject *)m); - return var; -} - -QmlGraphicsVisualDataModelParts::QmlGraphicsVisualDataModelParts(QmlGraphicsVisualDataModel *parent) -: QObject(parent), model(parent) -{ - new QmlGraphicsVisualDataModelPartsMetaObject(this); -} - -QmlGraphicsVisualDataModelPrivate::QmlGraphicsVisualDataModelPrivate(QmlContext *ctxt) -: m_listModelInterface(0), m_abstractItemModel(0), m_visualItemModel(0), m_delegate(0) -, m_context(ctxt), m_parts(0), m_delegateDataType(0), m_metaDataCreated(false) -, m_metaDataCacheable(false), m_listAccessor(0) -{ -} - -QmlGraphicsVisualDataModelData *QmlGraphicsVisualDataModelPrivate::data(QObject *item) -{ - QmlGraphicsVisualDataModelData *dataItem = - item->findChild<QmlGraphicsVisualDataModelData *>(); - Q_ASSERT(dataItem); - return dataItem; -} - -//--------------------------------------------------------------------------- - -QmlGraphicsVisualDataModel::QmlGraphicsVisualDataModel() -: QmlGraphicsVisualModel(*(new QmlGraphicsVisualDataModelPrivate(0))) -{ -} - -QmlGraphicsVisualDataModel::QmlGraphicsVisualDataModel(QmlContext *ctxt) -: QmlGraphicsVisualModel(*(new QmlGraphicsVisualDataModelPrivate(ctxt))) -{ -} - -QmlGraphicsVisualDataModel::~QmlGraphicsVisualDataModel() -{ - Q_D(QmlGraphicsVisualDataModel); - if (d->m_listAccessor) - delete d->m_listAccessor; - if (d->m_delegateDataType) - d->m_delegateDataType->release(); -} - -QVariant QmlGraphicsVisualDataModel::model() const -{ - Q_D(const QmlGraphicsVisualDataModel); - return d->m_modelVariant; -} - -void QmlGraphicsVisualDataModel::setModel(const QVariant &model) -{ - Q_D(QmlGraphicsVisualDataModel); - delete d->m_listAccessor; - d->m_listAccessor = 0; - d->m_modelVariant = model; - if (d->m_listModelInterface) { - // Assume caller has released all items. - QObject::disconnect(d->m_listModelInterface, SIGNAL(itemsChanged(int,int,QList<int>)), - this, SLOT(_q_itemsChanged(int,int,QList<int>))); - QObject::disconnect(d->m_listModelInterface, SIGNAL(itemsInserted(int,int)), - this, SLOT(_q_itemsInserted(int,int))); - QObject::disconnect(d->m_listModelInterface, SIGNAL(itemsRemoved(int,int)), - this, SLOT(_q_itemsRemoved(int,int))); - QObject::disconnect(d->m_listModelInterface, SIGNAL(itemsMoved(int,int,int)), - this, SLOT(_q_itemsMoved(int,int,int))); - d->m_listModelInterface = 0; - } else if (d->m_abstractItemModel) { - QObject::disconnect(d->m_abstractItemModel, SIGNAL(rowsInserted(const QModelIndex &,int,int)), - this, SLOT(_q_rowsInserted(const QModelIndex &,int,int))); - QObject::disconnect(d->m_abstractItemModel, SIGNAL(rowsRemoved(const QModelIndex &,int,int)), - this, SLOT(_q_rowsRemoved(const QModelIndex &,int,int))); - QObject::disconnect(d->m_abstractItemModel, SIGNAL(dataChanged(const QModelIndex&,const QModelIndex&)), - this, SLOT(_q_dataChanged(const QModelIndex&,const QModelIndex&))); - QObject::disconnect(d->m_abstractItemModel, SIGNAL(rowsMoved(const QModelIndex&,int,int,const QModelIndex&,int)), - this, SLOT(_q_rowsMoved(const QModelIndex&,int,int,const QModelIndex&,int))); - } else if (d->m_visualItemModel) { - QObject::disconnect(d->m_visualItemModel, SIGNAL(itemsInserted(int,int)), - this, SIGNAL(itemsInserted(int,int))); - QObject::disconnect(d->m_visualItemModel, SIGNAL(itemsRemoved(int,int)), - this, SIGNAL(itemsRemoved(int,int))); - QObject::disconnect(d->m_visualItemModel, SIGNAL(itemsMoved(int,int,int)), - this, SIGNAL(itemsMoved(int,int,int))); - QObject::disconnect(d->m_visualItemModel, SIGNAL(createdPackage(int,QmlPackage*)), - this, SLOT(_q_createdPackage(int,QmlPackage*))); - QObject::disconnect(d->m_visualItemModel, SIGNAL(destroyingPackage(QmlPackage*)), - this, SLOT(_q_destroyingPackage(QmlPackage*))); - d->m_visualItemModel = 0; - } - - d->m_roles.clear(); - d->m_roleNames.clear(); - if (d->m_delegateDataType) - d->m_delegateDataType->release(); - d->m_metaDataCreated = 0; - d->m_metaDataCacheable = false; - d->m_delegateDataType = new VDMDelegateDataType(&QmlGraphicsVisualDataModelData::staticMetaObject, d->m_context?d->m_context->engine():qmlEngine(this)); - - QObject *object = qvariant_cast<QObject *>(model); - if (object && (d->m_listModelInterface = qobject_cast<QListModelInterface *>(object))) { - QObject::connect(d->m_listModelInterface, SIGNAL(itemsChanged(int,int,QList<int>)), - this, SLOT(_q_itemsChanged(int,int,QList<int>))); - QObject::connect(d->m_listModelInterface, SIGNAL(itemsInserted(int,int)), - this, SLOT(_q_itemsInserted(int,int))); - QObject::connect(d->m_listModelInterface, SIGNAL(itemsRemoved(int,int)), - this, SLOT(_q_itemsRemoved(int,int))); - QObject::connect(d->m_listModelInterface, SIGNAL(itemsMoved(int,int,int)), - this, SLOT(_q_itemsMoved(int,int,int))); - d->m_metaDataCacheable = true; - if (d->m_delegate && d->m_listModelInterface->count()) - emit itemsInserted(0, d->m_listModelInterface->count()); - return; - } else if (object && (d->m_abstractItemModel = qobject_cast<QAbstractItemModel *>(object))) { - QObject::connect(d->m_abstractItemModel, SIGNAL(rowsInserted(const QModelIndex &,int,int)), - this, SLOT(_q_rowsInserted(const QModelIndex &,int,int))); - QObject::connect(d->m_abstractItemModel, SIGNAL(rowsRemoved(const QModelIndex &,int,int)), - this, SLOT(_q_rowsRemoved(const QModelIndex &,int,int))); - QObject::connect(d->m_abstractItemModel, SIGNAL(dataChanged(const QModelIndex&,const QModelIndex&)), - this, SLOT(_q_dataChanged(const QModelIndex&,const QModelIndex&))); - QObject::connect(d->m_abstractItemModel, SIGNAL(rowsMoved(const QModelIndex&,int,int,const QModelIndex&,int)), - this, SLOT(_q_rowsMoved(const QModelIndex&,int,int,const QModelIndex&,int))); - d->m_metaDataCacheable = true; - return; - } - if ((d->m_visualItemModel = qvariant_cast<QmlGraphicsVisualDataModel *>(model))) { - QObject::connect(d->m_visualItemModel, SIGNAL(itemsInserted(int,int)), - this, SIGNAL(itemsInserted(int,int))); - QObject::connect(d->m_visualItemModel, SIGNAL(itemsRemoved(int,int)), - this, SIGNAL(itemsRemoved(int,int))); - QObject::connect(d->m_visualItemModel, SIGNAL(itemsMoved(int,int,int)), - this, SIGNAL(itemsMoved(int,int,int))); - QObject::connect(d->m_visualItemModel, SIGNAL(createdPackage(int,QmlPackage*)), - this, SLOT(_q_createdPackage(int,QmlPackage*))); - QObject::connect(d->m_visualItemModel, SIGNAL(destroyingPackage(QmlPackage*)), - this, SLOT(_q_destroyingPackage(QmlPackage*))); - return; - } - d->m_listAccessor = new QmlListAccessor; - d->m_listAccessor->setList(model, d->m_context?d->m_context->engine():qmlEngine(this)); - if (d->m_listAccessor->type() != QmlListAccessor::ListProperty) - d->m_metaDataCacheable = true; - if (d->m_delegate && d->modelCount()) { - emit itemsInserted(0, d->modelCount()); - emit countChanged(); - } -} - -QmlComponent *QmlGraphicsVisualDataModel::delegate() const -{ - Q_D(const QmlGraphicsVisualDataModel); - if (d->m_visualItemModel) - return d->m_visualItemModel->delegate(); - return d->m_delegate; -} - -void QmlGraphicsVisualDataModel::setDelegate(QmlComponent *delegate) -{ - Q_D(QmlGraphicsVisualDataModel); - bool wasValid = d->m_delegate != 0; - d->m_delegate = delegate; - if (!wasValid && d->modelCount() && d->m_delegate) { - emit itemsInserted(0, d->modelCount()); - emit countChanged(); - } - if (wasValid && !d->m_delegate && d->modelCount()) { - emit itemsRemoved(0, d->modelCount()); - emit countChanged(); - } -} - -QString QmlGraphicsVisualDataModel::part() const -{ - Q_D(const QmlGraphicsVisualDataModel); - return d->m_part; -} - -void QmlGraphicsVisualDataModel::setPart(const QString &part) -{ - Q_D(QmlGraphicsVisualDataModel); - d->m_part = part; -} - -int QmlGraphicsVisualDataModel::count() const -{ - Q_D(const QmlGraphicsVisualDataModel); - return d->modelCount(); -} - -QmlGraphicsItem *QmlGraphicsVisualDataModel::item(int index, bool complete) -{ - Q_D(QmlGraphicsVisualDataModel); - if (d->m_visualItemModel) - return d->m_visualItemModel->item(index, d->m_part.toUtf8(), complete); - return item(index, QByteArray(), complete); -} - -/* - Returns ReleaseStatus flags. -*/ -QmlGraphicsVisualDataModel::ReleaseFlags QmlGraphicsVisualDataModel::release(QmlGraphicsItem *item) -{ - Q_D(QmlGraphicsVisualDataModel); - if (d->m_visualItemModel) - return d->m_visualItemModel->release(item); - - ReleaseFlags stat = 0; - QObject *obj = item; - bool inPackage = false; - - QHash<QObject*,QmlPackage*>::iterator it = d->m_packaged.find(item); - if (it != d->m_packaged.end()) { - QmlPackage *package = *it; - d->m_packaged.erase(it); - if (d->m_packaged.contains(item)) - stat |= Referenced; - inPackage = true; - obj = package; // fall through and delete - } - - if (d->m_cache.releaseItem(obj)) { - if (inPackage) { - emit destroyingPackage(qobject_cast<QmlPackage*>(obj)); - } else { - item->setVisible(false); - static_cast<QGraphicsItem*>(item)->setParentItem(0); - } - stat |= Destroyed; - obj->deleteLater(); - } else if (!inPackage) { - stat |= Referenced; - } - - return stat; -} - -QObject *QmlGraphicsVisualDataModel::parts() -{ - Q_D(QmlGraphicsVisualDataModel); - if (!d->m_parts) - d->m_parts = new QmlGraphicsVisualDataModelParts(this); - return d->m_parts; -} - -QmlGraphicsItem *QmlGraphicsVisualDataModel::item(int index, const QByteArray &viewId, bool complete) -{ - Q_D(QmlGraphicsVisualDataModel); - if (d->m_visualItemModel) - return d->m_visualItemModel->item(index, viewId, complete); - - if (d->modelCount() <= 0 || !d->m_delegate) - return 0; - - QObject *nobj = d->m_cache.getItem(index); - if (!nobj) { - QmlContext *ccontext = d->m_context; - if (!ccontext) ccontext = qmlContext(this); - QmlContext *ctxt = new QmlContext(ccontext); - QmlGraphicsVisualDataModelData *data = new QmlGraphicsVisualDataModelData(index, this); - ctxt->setContextProperty(QLatin1String("model"), data); - ctxt->addDefaultObject(data); - nobj = d->m_delegate->beginCreate(ctxt); - if (complete) - d->m_delegate->completeCreate(); - if (nobj) { - ctxt->setParent(nobj); - data->setParent(nobj); - d->m_cache.insertItem(index, nobj); - if (QmlPackage *package = qobject_cast<QmlPackage *>(nobj)) - emit createdPackage(index, package); - } else { - delete data; - delete ctxt; - qWarning() << d->m_delegate->errors(); - } - } - QmlGraphicsItem *item = qobject_cast<QmlGraphicsItem *>(nobj); - if (!item) { - QmlPackage *package = qobject_cast<QmlPackage *>(nobj); - if (package) { - QObject *o = package->part(QString::fromUtf8(viewId)); - item = qobject_cast<QmlGraphicsItem *>(o); - if (item) - d->m_packaged.insertMulti(item, package); - } - } - if (!item) { - d->m_cache.releaseItem(nobj); - qmlInfo(d->m_delegate) << QmlGraphicsVisualDataModel::tr("Delegate component must be Item type."); - } - - return item; -} - -void QmlGraphicsVisualDataModel::completeItem() -{ - Q_D(QmlGraphicsVisualDataModel); - if (d->m_visualItemModel) { - d->m_visualItemModel->completeItem(); - return; - } - - d->m_delegate->completeCreate(); -} - -QString QmlGraphicsVisualDataModel::stringValue(int index, const QString &name) -{ - Q_D(QmlGraphicsVisualDataModel); - if (d->m_visualItemModel) - return d->m_visualItemModel->stringValue(index, name); - - if ((!d->m_listModelInterface && !d->m_abstractItemModel) || !d->m_delegate) - return QString(); - - QString val; - QObject *data = 0; - bool tempData = false; - - if (QObject *nobj = d->m_cache.item(index)) - data = d->data(nobj); - if (!data) { - data = new QmlGraphicsVisualDataModelData(index, this); - tempData = true; - } - - QmlDeclarativeData *ddata = QmlDeclarativeData::get(data); - if (ddata && ddata->propertyCache) { - QmlPropertyCache::Data *prop = ddata->propertyCache->property(name); - if (prop) { - if (prop->propType == QVariant::String) { - void *args[] = { &val, 0 }; - QMetaObject::metacall(data, QMetaObject::ReadProperty, prop->coreIndex, args); - } else if (prop->propType == qMetaTypeId<QVariant>()) { - QVariant v; - void *args[] = { &v, 0 }; - QMetaObject::metacall(data, QMetaObject::ReadProperty, prop->coreIndex, args); - val = v.toString(); - } - } else { - val = data->property(name.toUtf8()).toString(); - } - } else { - val = data->property(name.toUtf8()).toString(); - } - - if (tempData) - delete data; - - return val; -} - -QVariant QmlGraphicsVisualDataModel::evaluate(int index, const QString &expression, QObject *objectContext) -{ - Q_D(QmlGraphicsVisualDataModel); - if (d->m_visualItemModel) - return d->m_visualItemModel->evaluate(index, expression, objectContext); - - if ((!d->m_listModelInterface && !d->m_abstractItemModel) || !d->m_delegate) - return QVariant(); - - QVariant value; - QObject *nobj = d->m_cache.item(index); - if (nobj) { - QmlGraphicsItem *item = qobject_cast<QmlGraphicsItem *>(nobj); - if (item) { - QmlExpression e(qmlContext(item), expression, objectContext); - e.setTrackChange(false); - value = e.value(); - } - } else { - QmlContext *ccontext = d->m_context; - if (!ccontext) ccontext = qmlContext(this); - QmlContext *ctxt = new QmlContext(ccontext); - QmlGraphicsVisualDataModelData *data = new QmlGraphicsVisualDataModelData(index, this); - ctxt->addDefaultObject(data); - QmlExpression e(ctxt, expression, objectContext); - e.setTrackChange(false); - value = e.value(); - delete data; - delete ctxt; - } - - return value; -} - -int QmlGraphicsVisualDataModel::indexOf(QmlGraphicsItem *item, QObject *) const -{ - QVariant val = QmlEngine::contextForObject(item)->contextProperty(QLatin1String("index")); - return val.toInt(); - return -1; -} - -void QmlGraphicsVisualDataModel::_q_itemsChanged(int index, int count, - const QList<int> &roles) -{ - Q_D(QmlGraphicsVisualDataModel); - // XXX - highly inefficient - for (int ii = index; ii < index + count; ++ii) { - - if (QObject *item = d->m_cache.item(ii)) { - QmlGraphicsVisualDataModelData *data = d->data(item); - - for (int roleIdx = 0; roleIdx < roles.count(); ++roleIdx) { - int role = roles.at(roleIdx); - int propId = data->propForRole(role); - if (propId != -1) { - if (d->m_listModelInterface) { - data->setValue(propId, d->m_listModelInterface->data(ii, QList<int>() << role).value(role)); - } else if (d->m_abstractItemModel) { - QModelIndex index = d->m_abstractItemModel->index(ii, 0); - data->setValue(propId, d->m_abstractItemModel->data(index, role)); - } - } - } - } - } -} - -void QmlGraphicsVisualDataModel::_q_itemsInserted(int index, int count) -{ - Q_D(QmlGraphicsVisualDataModel); - // XXX - highly inefficient - QHash<int,QmlGraphicsVisualDataModelPrivate::ObjectRef> items; - for (QHash<int,QmlGraphicsVisualDataModelPrivate::ObjectRef>::Iterator iter = d->m_cache.begin(); - iter != d->m_cache.end(); ) { - - if (iter.key() >= index) { - QmlGraphicsVisualDataModelPrivate::ObjectRef objRef = *iter; - int index = iter.key() + count; - iter = d->m_cache.erase(iter); - - items.insert(index, objRef); - - QmlGraphicsVisualDataModelData *data = d->data(objRef.obj); - data->setIndex(index); - } else { - ++iter; - } - } - d->m_cache.unite(items); - - emit itemsInserted(index, count); - emit countChanged(); -} - -void QmlGraphicsVisualDataModel::_q_itemsRemoved(int index, int count) -{ - Q_D(QmlGraphicsVisualDataModel); - // XXX - highly inefficient - QHash<int, QmlGraphicsVisualDataModelPrivate::ObjectRef> items; - for (QHash<int, QmlGraphicsVisualDataModelPrivate::ObjectRef>::Iterator iter = d->m_cache.begin(); - iter != d->m_cache.end(); ) { - if (iter.key() >= index && iter.key() < index + count) { - QmlGraphicsVisualDataModelPrivate::ObjectRef objRef = *iter; - iter = d->m_cache.erase(iter); - items.insertMulti(-1, objRef); //XXX perhaps better to maintain separately - QmlGraphicsVisualDataModelData *data = d->data(objRef.obj); - data->setIndex(-1); - } else if (iter.key() >= index + count) { - QmlGraphicsVisualDataModelPrivate::ObjectRef objRef = *iter; - int index = iter.key() - count; - iter = d->m_cache.erase(iter); - items.insert(index, objRef); - QmlGraphicsVisualDataModelData *data = d->data(objRef.obj); - data->setIndex(index); - } else { - ++iter; - } - } - - d->m_cache.unite(items); - emit itemsRemoved(index, count); - emit countChanged(); -} - -void QmlGraphicsVisualDataModel::_q_itemsMoved(int from, int to, int count) -{ - Q_D(QmlGraphicsVisualDataModel); - // XXX - highly inefficient - QHash<int,QmlGraphicsVisualDataModelPrivate::ObjectRef> items; - for (QHash<int,QmlGraphicsVisualDataModelPrivate::ObjectRef>::Iterator iter = d->m_cache.begin(); - iter != d->m_cache.end(); ) { - - if (iter.key() >= from && iter.key() < from + count) { - QmlGraphicsVisualDataModelPrivate::ObjectRef objRef = *iter; - int index = iter.key() - from + to; - iter = d->m_cache.erase(iter); - - items.insert(index, objRef); - - QmlGraphicsVisualDataModelData *data = d->data(objRef.obj); - data->setIndex(index); - } else { - ++iter; - } - } - for (QHash<int,QmlGraphicsVisualDataModelPrivate::ObjectRef>::Iterator iter = d->m_cache.begin(); - iter != d->m_cache.end(); ) { - - int diff = from > to ? count : -count; - if (iter.key() >= qMin(from,to) && iter.key() < qMax(from+count,to+count)) { - QmlGraphicsVisualDataModelPrivate::ObjectRef objRef = *iter; - int index = iter.key() + diff; - iter = d->m_cache.erase(iter); - - items.insert(index, objRef); - - QmlGraphicsVisualDataModelData *data = d->data(objRef.obj); - data->setIndex(index); - } else { - ++iter; - } - } - d->m_cache.unite(items); - - emit itemsMoved(from, to, count); -} - -void QmlGraphicsVisualDataModel::_q_rowsInserted(const QModelIndex &parent, int begin, int end) -{ - if (!parent.isValid()) - _q_itemsInserted(begin, end - begin + 1); -} - -void QmlGraphicsVisualDataModel::_q_rowsRemoved(const QModelIndex &parent, int begin, int end) -{ - if (!parent.isValid()) - _q_itemsRemoved(begin, end - begin + 1); -} - -void QmlGraphicsVisualDataModel::_q_rowsMoved(const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationRow) -{ - const int count = sourceEnd - sourceStart + 1; - if (!destinationParent.isValid() && !sourceParent.isValid()) { - _q_itemsMoved(sourceStart, destinationRow, count); - } else if (!sourceParent.isValid()) { - _q_itemsRemoved(sourceStart, count); - } else if (!destinationParent.isValid()) { - _q_itemsInserted(destinationRow, count); - } -} - -void QmlGraphicsVisualDataModel::_q_dataChanged(const QModelIndex &begin, const QModelIndex &end) -{ - Q_D(QmlGraphicsVisualDataModel); - if (!begin.parent().isValid()) - _q_itemsChanged(begin.row(), end.row() - begin.row() + 1, d->m_roles); -} - -void QmlGraphicsVisualDataModel::_q_createdPackage(int index, QmlPackage *package) -{ - Q_D(QmlGraphicsVisualDataModel); - emit createdItem(index, qobject_cast<QmlGraphicsItem*>(package->part(d->m_part))); -} - -void QmlGraphicsVisualDataModel::_q_destroyingPackage(QmlPackage *package) -{ - Q_D(QmlGraphicsVisualDataModel); - emit destroyingItem(qobject_cast<QmlGraphicsItem*>(package->part(d->m_part))); -} - -QT_END_NAMESPACE - -QML_DECLARE_TYPE(QListModelInterface) - -#include <qmlgraphicsvisualitemmodel.moc> |