GraphicListModel Class
A container class storing a list of graphics available in a GraphicsOverlay. More...
| Header: | #include <GraphicListModel.h> |
| Since: | Esri::ArcGISRuntime 100.0 |
| Inherits: | QAbstractListModel and Esri::ArcGISRuntime::Iterable |
This class was introduced in Esri::ArcGISRuntime 100.0.
Public Types
| enum | GraphicRoles { GraphicSelectedRole, GraphicVisibleRole, GraphicZIndexRole, GraphicAttributesRole } |
Public Functions
| virtual | ~GraphicListModel() override |
| void | append(Esri::ArcGISRuntime::Graphic *graphic) |
| void | append(const QList<Esri::ArcGISRuntime::Graphic *> &graphics) |
| void | clear() |
| bool | contains(Esri::ArcGISRuntime::Graphic *graphic) const |
| Esri::ArcGISRuntime::Graphic * | first() const |
| int | indexOf(Esri::ArcGISRuntime::Graphic *graphic) const |
| void | insert(int index, Esri::ArcGISRuntime::Graphic *graphic) |
| bool | isEmpty() const |
| Esri::ArcGISRuntime::Graphic * | last() const |
| void | move(int from, int to) |
| void | removeAt(int index) |
| void | removeOne(Esri::ArcGISRuntime::Graphic *graphic) |
Reimplemented Public Functions
| virtual Esri::ArcGISRuntime::Graphic * | at(int index) const override |
| virtual QVariant | data(const QModelIndex &index, int role = Qt::DisplayRole) const override |
| virtual int | size() const override |
Signals
| void | itemAdded(int index) |
| void | itemRemoved(int index) |
Detailed Description
Modifying this collection (adding, removing, moving) will update the graphics available in a GraphicsOverlay. Moving a graphic's position in the list model does not affect drawing order. To change drawing order, use the Graphic::zIndex property on each Graphic.
The model returns data for the following roles:
| Role | Type | Description | GraphicRoles |
|---|---|---|---|
| selected | bool | Whether the graphic is selected. | GraphicSelectedRole |
| graphicVisible | bool | Whether the graphic is visible. | GraphicVisibleRole |
| zIndex | int | The z index of the graphic. | GraphicZIndexRole |
| attributes | QVariantMap | The attributes of the graphic. | GraphicAttributesRole |
See also GraphicsOverlay and Graphic.
Member Type Documentation
enum GraphicListModel::GraphicRoles
This enum specifies the custom roles which can be used with GraphicListModel::data.
| Constant | Value | Description |
|---|---|---|
Esri::ArcGISRuntime::GraphicListModel::GraphicSelectedRole | Qt::UserRole + 1 | Whether the graphic is selected. |
Esri::ArcGISRuntime::GraphicListModel::GraphicVisibleRole | Qt::UserRole + 2 | Whether the graphic is visible. |
Esri::ArcGISRuntime::GraphicListModel::GraphicZIndexRole | Qt::UserRole + 3 | The z index of the graphic. |
Esri::ArcGISRuntime::GraphicListModel::GraphicAttributesRole | Qt::UserRole + 4 | The attributes of the graphic. |
Member Function Documentation
[signal] void GraphicListModel::itemAdded (int index)
Signal emitted when an item is added to the list.
index is the index of the added item.
This function was introduced in Esri::ArcGISRuntime 100.15.
[signal] void GraphicListModel::itemRemoved (int index)
Signal emitted when an item is removed from the list.
index is the index of the removed item.
This function was introduced in Esri::ArcGISRuntime 100.15.
[override virtual] GraphicListModel::~GraphicListModel ()
Destructor.
void GraphicListModel::append(Esri::ArcGISRuntime::Graphic *graphic)
Appends the graphic to the graphic list model.
void GraphicListModel::append(const QList<Esri::ArcGISRuntime::Graphic *> &graphics)
Appends graphics to the graphic list model.
[override virtual] Esri::ArcGISRuntime::Graphic *GraphicListModel::at(int index) const
Returns the graphic at the specified index.
void GraphicListModel::clear()
Removes all graphics from the list model.
List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.
bool GraphicListModel::contains(Esri::ArcGISRuntime::Graphic *graphic) const
Returns true if the provided graphic is in the list model.
[override virtual] QVariant GraphicListModel::data(const QModelIndex &index, int role = Qt::DisplayRole) const
Reimplements: QAbstractItemModel::data(const QModelIndex &index, int role) const.
Returns the data stored under the given role for the graphic referred to by the index.
- index. The index in the model for which to return data.
- role. The role for which to return data.
Esri::ArcGISRuntime::Graphic *GraphicListModel::first() const
Returns the first graphic in the list model.
int GraphicListModel::indexOf (Esri::ArcGISRuntime::Graphic *graphic) const
Returns the index of the provided graphic in the list model.
void GraphicListModel::insert(int index, Esri::ArcGISRuntime::Graphic *graphic)
Inserts a graphic at a specified index in the list model.
bool GraphicListModel::isEmpty () const
Returns true if this list model is empty.
Esri::ArcGISRuntime::Graphic *GraphicListModel::last() const
Returns the last graphic in the list model.
void GraphicListModel::move(int from, int to)
Moves one graphic from an index in the list model to a different index.
Moving a graphic's position in the list model does not affect drawing order. To change drawing order, use the Graphic::zIndex property on each Graphic.
void GraphicListModel::removeAt (int index)
Removes a graphic at the specified index in the list model.
List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.
void GraphicListModel::removeOne (Esri::ArcGISRuntime::Graphic *graphic)
Removes the specified graphic from the list model.
List models do not take ownership of the objects they contain. Therefore, removing or clearing objects from the list model will not delete those objects. An RAII technique should be used to ensure that memory is properly deallocated.
[override virtual] int GraphicListModel::size() const
Returns the number of graphics in the model.