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| |
| #include "qdeclarativeplaceimagemodel_p.h" |
| #include "qdeclarativesupplier_p.h" |
| |
| #include <QtCore/QUrl> |
| #include <QtLocation/QPlaceImage> |
| |
| QT_BEGIN_NAMESPACE |
| |
| /*! |
| \qmltype ImageModel |
| \instantiates QDeclarativePlaceImageModel |
| \inqmlmodule QtLocation |
| \ingroup qml-QtLocation5-places |
| \ingroup qml-QtLocation5-places-models |
| \since QtLocation 5.5 |
| |
| \brief The ImageModel type provides a model of place images. |
| |
| The ImageModel is a read-only model used to fetch images related to a \l Place. |
| Binding a \l Place via \l ImageModel::place initiates an initial fetch of images. |
| The model performs fetches incrementally and is intended to be used in conjunction |
| with a View such as a \l ListView. When the View reaches the last of the images |
| currently in the model, a fetch is performed to retrieve more if they are available. |
| The View is automatically updated as the images are received. The number of images |
| which are fetched at a time is specified by the \l batchSize property. The total number |
| of images available can be accessed via the \l totalCount property. |
| |
| The model returns data for the following roles: |
| |
| \table |
| \header |
| \li Role |
| \li Type |
| \li Description |
| \row |
| \li url |
| \li url |
| \li The URL of the image. |
| \row |
| \li imageId |
| \li string |
| \li The identifier of the image. |
| \row |
| \li mimeType |
| \li string |
| \li The MIME type of the image. |
| \row |
| \li supplier |
| \li \l Supplier |
| \li The supplier of the image. |
| \row |
| \li user |
| \li \l {QtLocation::User}{User} |
| \li The user who contributed the image. |
| \row |
| \li attribution |
| \li string |
| \li Attribution text which must be displayed when displaying the image. |
| \endtable |
| |
| |
| \section1 Example |
| |
| The following example shows how to display images for a place: |
| |
| \snippet declarative/places.qml QtQuick import |
| \snippet declarative/maps.qml QtLocation import |
| \codeline |
| \snippet declarative/places.qml ImageModel |
| */ |
| |
| /*! |
| \qmlproperty Place ImageModel::place |
| |
| This property holds the Place that the images are for. |
| */ |
| |
| /*! |
| \qmlproperty int ImageModel::batchSize |
| |
| This property holds the batch size to use when fetching more image items. |
| */ |
| |
| /*! |
| \qmlproperty int ImageModel::totalCount |
| |
| This property holds the total number of image items for the place. |
| */ |
| |
| QDeclarativePlaceImageModel::QDeclarativePlaceImageModel(QObject *parent) |
| : QDeclarativePlaceContentModel(QPlaceContent::ImageType, parent) |
| { |
| } |
| |
| QDeclarativePlaceImageModel::~QDeclarativePlaceImageModel() |
| { |
| qDeleteAll(m_suppliers); |
| } |
| |
| /*! |
| \internal |
| */ |
| QVariant QDeclarativePlaceImageModel::data(const QModelIndex &index, int role) const |
| { |
| if (!index.isValid()) |
| return QVariant(); |
| |
| if (index.row() >= rowCount(index.parent()) || index.row() < 0) |
| return QVariant(); |
| |
| const QPlaceImage &image = m_content.value(index.row()); |
| |
| switch (role) { |
| case UrlRole: |
| return image.url(); |
| case ImageIdRole: |
| return image.imageId(); |
| case MimeTypeRole: |
| return image.mimeType(); |
| } |
| |
| return QDeclarativePlaceContentModel::data(index, role); |
| } |
| |
| QHash<int, QByteArray> QDeclarativePlaceImageModel::roleNames() const |
| { |
| QHash<int, QByteArray> roles = QDeclarativePlaceContentModel::roleNames(); |
| roles.insert(UrlRole, "url"); |
| roles.insert(ImageIdRole, "imageId"); |
| roles.insert(MimeTypeRole, "mimeType"); |
| return roles; |
| } |
| |
| QT_END_NAMESPACE |