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virtual vtkTypeBool | IsA (const char *type) |
| Return 1 if this class is the same type of (or a subclass of) the named class.
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vtkGraphItem * | NewInstance () const |
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void | PrintSelf (ostream &os, vtkIndent indent) override |
| Methods invoked by print to print information about the object including superclasses.
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virtual vtkIncrementalForceLayout * | GetLayout () |
| Exposes the incremental graph layout for updating parameters.
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virtual void | UpdateLayout () |
| Incrementally updates the graph layout.
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virtual void | SetGraph (vtkGraph *graph) |
| The graph that this item draws.
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virtual vtkGraph * | GetGraph () |
| The graph that this item draws.
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virtual void | StartLayoutAnimation (vtkRenderWindowInteractor *interactor) |
| Begins or ends the layout animation.
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virtual void | StopLayoutAnimation () |
| Begins or ends the layout animation.
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virtual vtkTypeBool | IsA (const char *type) |
| Return 1 if this class is the same type of (or a subclass of) the named class.
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vtkContextItem * | NewInstance () const |
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void | PrintSelf (ostream &os, vtkIndent indent) override |
| Methods invoked by print to print information about the object including superclasses.
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virtual void | SetTransform (vtkContextTransform *) |
| Set the transform of the item.
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virtual double | GetOpacity () |
| Get the opacity of the item.
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virtual void | SetOpacity (double) |
| Set the opacity of the item.
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virtual vtkTypeBool | IsA (const char *type) |
| Return 1 if this class is the same type of (or a subclass of) the named class.
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vtkAbstractContextItem * | NewInstance () const |
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void | PrintSelf (ostream &os, vtkIndent indent) override |
| Methods invoked by print to print information about the object including superclasses.
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virtual void | Update () |
| Perform any updates to the item that may be necessary before rendering.
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virtual bool | Paint (vtkContext2D *painter) |
| Paint event for the item, called whenever the item needs to be drawn.
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virtual bool | PaintChildren (vtkContext2D *painter) |
| Paint the children of the item, should be called whenever the children need to be rendered.
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virtual void | ReleaseGraphicsResources () |
| Release graphics resources hold by the item.
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vtkIdType | AddItem (vtkAbstractContextItem *item) |
| Add child items to this item.
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bool | RemoveItem (vtkAbstractContextItem *item) |
| Remove child item from this item.
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bool | RemoveItem (vtkIdType index) |
| Remove child item from this item.
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vtkAbstractContextItem * | GetItem (vtkIdType index) |
| Get the item at the specified index.
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vtkIdType | GetItemIndex (vtkAbstractContextItem *item) |
| Get the index of the specified item in itemIndex.
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vtkIdType | GetNumberOfItems () |
| Get the number of child items.
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void | ClearItems () |
| Remove all child items from this item.
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vtkIdType | Raise (vtkIdType index) |
| Raises the child to the top of the item's stack.
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virtual vtkIdType | StackAbove (vtkIdType index, vtkIdType under) |
| Raises the child above the under sibling.
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vtkIdType | Lower (vtkIdType index) |
| Lowers the child to the bottom of the item's stack.
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virtual vtkIdType | StackUnder (vtkIdType child, vtkIdType above) |
| Lowers the child under the above sibling.
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virtual bool | Hit (const vtkContextMouseEvent &mouse) |
| Return true if the supplied x, y coordinate is inside the item.
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virtual vtkAbstractContextItem * | GetPickedItem (const vtkContextMouseEvent &mouse) |
| Return the item under the mouse.
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virtual bool | MouseEnterEvent (const vtkContextMouseEvent &mouse) |
| Mouse enter event.
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virtual bool | MouseMoveEvent (const vtkContextMouseEvent &mouse) |
| Mouse move event.
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virtual bool | MouseLeaveEvent (const vtkContextMouseEvent &mouse) |
| Mouse leave event.
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virtual bool | MouseButtonPressEvent (const vtkContextMouseEvent &mouse) |
| Mouse button down event Return true if the item holds the event, false if the event can be propagated to other items.
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virtual bool | MouseButtonReleaseEvent (const vtkContextMouseEvent &mouse) |
| Mouse button release event.
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virtual bool | MouseDoubleClickEvent (const vtkContextMouseEvent &mouse) |
| Mouse button double click event.
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virtual bool | MouseWheelEvent (const vtkContextMouseEvent &mouse, int delta) |
| Mouse wheel event, positive delta indicates forward movement of the wheel.
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virtual bool | KeyPressEvent (const vtkContextKeyEvent &key) |
| Key press event.
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virtual bool | KeyReleaseEvent (const vtkContextKeyEvent &key) |
| Key release event.
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virtual void | SetScene (vtkContextScene *scene) |
| Set the vtkContextScene for the item, always set for an item in a scene.
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vtkContextScene * | GetScene () |
| Get the vtkContextScene for the item, always set for an item in a scene.
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virtual void | SetParent (vtkAbstractContextItem *parent) |
| Set the parent item.
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vtkAbstractContextItem * | GetParent () |
| Get the parent item.
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virtual vtkVector2f | MapToParent (const vtkVector2f &point) |
| Maps the point to the parent coordinate system.
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virtual vtkVector2f | MapFromParent (const vtkVector2f &point) |
| Maps the point from the parent coordinate system.
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virtual vtkVector2f | MapToScene (const vtkVector2f &point) |
| Maps the point to the scene coordinate system.
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virtual vtkVector2f | MapFromScene (const vtkVector2f &point) |
| Maps the point from the scene coordinate system.
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virtual bool | GetVisible () |
| Get the visibility of the item (should it be drawn).
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virtual void | SetVisible (bool) |
| Set the visibility of the item (should it be drawn).
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virtual bool | GetInteractive () |
| Get if the item is interactive (should respond to mouse events).
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virtual void | SetInteractive (bool) |
| Set if the item is interactive (should respond to mouse events).
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| vtkBaseTypeMacro (vtkObject, vtkObjectBase) |
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virtual void | DebugOn () |
| Turn debugging output on.
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virtual void | DebugOff () |
| Turn debugging output off.
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bool | GetDebug () |
| Get the value of the debug flag.
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void | SetDebug (bool debugFlag) |
| Set the value of the debug flag.
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virtual void | Modified () |
| Update the modification time for this object.
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virtual vtkMTimeType | GetMTime () |
| Return this object's modified time.
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void | PrintSelf (ostream &os, vtkIndent indent) override |
| Methods invoked by print to print information about the object including superclasses.
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void | RemoveObserver (unsigned long tag) |
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void | RemoveObservers (unsigned long event) |
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void | RemoveObservers (const char *event) |
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void | RemoveAllObservers () |
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vtkTypeBool | HasObserver (unsigned long event) |
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vtkTypeBool | HasObserver (const char *event) |
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int | InvokeEvent (unsigned long event) |
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int | InvokeEvent (const char *event) |
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unsigned long | AddObserver (unsigned long event, vtkCommand *, float priority=0.0f) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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unsigned long | AddObserver (const char *event, vtkCommand *, float priority=0.0f) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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vtkCommand * | GetCommand (unsigned long tag) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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void | RemoveObserver (vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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void | RemoveObservers (unsigned long event, vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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void | RemoveObservers (const char *event, vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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vtkTypeBool | HasObserver (unsigned long event, vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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vtkTypeBool | HasObserver (const char *event, vtkCommand *) |
| Allow people to add/remove/invoke observers (callbacks) to any VTK object.
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template<class U , class T > |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f) |
| Overloads to AddObserver that allow developers to add class member functions as callbacks for events.
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template<class U , class T > |
unsigned long | AddObserver (unsigned long event, U observer, void(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
| Overloads to AddObserver that allow developers to add class member functions as callbacks for events.
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template<class U , class T > |
unsigned long | AddObserver (unsigned long event, U observer, bool(T::*callback)(vtkObject *, unsigned long, void *), float priority=0.0f) |
| Allow user to set the AbortFlagOn() with the return value of the callback method.
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int | InvokeEvent (unsigned long event, void *callData) |
| This method invokes an event and return whether the event was aborted or not.
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int | InvokeEvent (const char *event, void *callData) |
| This method invokes an event and return whether the event was aborted or not.
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const char * | GetClassName () const |
| Return the class name as a string.
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virtual vtkTypeBool | IsA (const char *name) |
| Return 1 if this class is the same type of (or a subclass of) the named class.
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virtual vtkIdType | GetNumberOfGenerationsFromBase (const char *name) |
| Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).
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virtual void | Delete () |
| Delete a VTK object.
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virtual void | FastDelete () |
| Delete a reference to this object.
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void | InitializeObjectBase () |
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void | Print (ostream &os) |
| Print an object to an ostream.
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virtual void | Register (vtkObjectBase *o) |
| Increase the reference count (mark as used by another object).
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virtual void | UnRegister (vtkObjectBase *o) |
| Decrease the reference count (release by another object).
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int | GetReferenceCount () |
| Return the current reference count of this object.
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void | SetReferenceCount (int) |
| Sets the reference count.
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bool | GetIsInMemkind () const |
| A local state flag that remembers whether this object lives in the normal or extended memory space.
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virtual void | PrintHeader (ostream &os, vtkIndent indent) |
| Methods invoked by print to print information about the object including superclasses.
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virtual void | PrintTrailer (ostream &os, vtkIndent indent) |
| Methods invoked by print to print information about the object including superclasses.
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virtual vtkObjectBase * | NewInstanceInternal () const |
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| vtkGraphItem () |
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| ~vtkGraphItem () override |
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bool | Paint (vtkContext2D *painter) override |
| Paints the graph.
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virtual void | RebuildBuffers () |
| Builds a cache of data from the graph by calling the virtual functions such as VertexColor(), EdgeColor(), etc.
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virtual void | PaintBuffers (vtkContext2D *painter) |
| Efficiently draws the contents of the buffers built in RebuildBuffers.
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virtual bool | IsDirty () |
| Returns true if the underlying vtkGraph has been modified since the last RebuildBuffers, signalling a new RebuildBuffers is needed.
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virtual vtkIdType | NumberOfVertices () |
| Returns the number of vertices in the graph.
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virtual vtkIdType | NumberOfEdges () |
| Returns the number of edges in the graph.
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virtual vtkIdType | NumberOfEdgePoints (vtkIdType edge) |
| Returns the number of edge control points for a particular edge.
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virtual float | EdgeWidth (vtkIdType edge, vtkIdType point) |
| Returns the edge width.
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virtual vtkColor4ub | EdgeColor (vtkIdType edge, vtkIdType point) |
| Returns the edge color.
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virtual vtkVector2f | EdgePosition (vtkIdType edge, vtkIdType point) |
| Returns the edge control point positions.
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virtual float | VertexSize (vtkIdType vertex) |
| Returns the vertex size in pixels, which is remains the same at any zoom level.
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virtual vtkColor4ub | VertexColor (vtkIdType vertex) |
| Returns the color of each vertex.
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virtual int | VertexMarker (vtkIdType vertex) |
| Returns the marker type for each vertex, as defined in vtkMarkerUtilities.
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virtual vtkVector2f | VertexPosition (vtkIdType vertex) |
| Returns the position of each vertex.
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virtual vtkStdString | VertexTooltip (vtkIdType vertex) |
| Returns the tooltip for each vertex.
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virtual vtkIdType | HitVertex (const vtkVector2f &pos) |
| Return index of hit vertex, or -1 if no hit.
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bool | Hit (const vtkContextMouseEvent &event) override |
| Whether this graph item is hit.
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virtual void | PlaceTooltip (vtkIdType v) |
| Change the position of the tooltip based on the vertex hovered.
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bool | MouseMoveEvent (const vtkContextMouseEvent &event) override |
| Handle mouse events.
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bool | MouseLeaveEvent (const vtkContextMouseEvent &event) override |
| Handle mouse events.
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bool | MouseEnterEvent (const vtkContextMouseEvent &event) override |
| Handle mouse events.
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bool | MouseButtonPressEvent (const vtkContextMouseEvent &event) override |
| Handle mouse events.
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bool | MouseButtonReleaseEvent (const vtkContextMouseEvent &event) override |
| Handle mouse events.
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bool | MouseWheelEvent (const vtkContextMouseEvent &event, int delta) override |
| Handle mouse events.
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virtual vtkObjectBase * | NewInstanceInternal () const |
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| vtkContextItem ()=default |
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| ~vtkContextItem () override=default |
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virtual vtkObjectBase * | NewInstanceInternal () const |
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| vtkAbstractContextItem () |
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| ~vtkAbstractContextItem () override |
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| vtkObject () |
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| ~vtkObject () override |
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void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) override |
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void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override |
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void | InternalGrabFocus (vtkCommand *mouseEvents, vtkCommand *keypressEvents=nullptr) |
| These methods allow a command to exclusively grab all events.
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void | InternalReleaseFocus () |
| These methods allow a command to exclusively grab all events.
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| vtkObjectBase () |
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virtual | ~vtkObjectBase () |
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virtual void | RegisterInternal (vtkObjectBase *, vtkTypeBool check) |
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virtual void | UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) |
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virtual void | ReportReferences (vtkGarbageCollector *) |
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| vtkObjectBase (const vtkObjectBase &) |
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void | operator= (const vtkObjectBase &) |
|
A 2D graphics item for rendering a graph.
This item draws a graph as a part of a vtkContextScene. This simple class has minimal state and delegates the determination of visual vertex and edge properties like color, size, width, etc. to a set of virtual functions. To influence the rendering of the graph, subclass this item and override the property functions you wish to customize.
Definition at line 44 of file vtkGraphItem.h.