Rogue Wave Views Manager Package API Reference Guide |
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Manager interactor class. More...
#include <ilviews/manager/polyint.h>
Public Member Functions | |
IlvEditPointsInteractor (IlvManager *manager, IlvView *view) | |
Constructor. More... | |
void | abort () |
Aborts the interaction. More... | |
virtual IlvPolyPointsSelection * | createSelection (IlvGraphic *polypt) |
Returns a new IlvPolyPointsSelection . More... | |
void | drawGhost () |
Visual feedback during the interaction. More... | |
IlBoolean | handleEvent (IlvEvent &event) |
Handles events for the manager view. More... | |
void | handleExpose (IlvRegion *rect=0) |
Called when the manager view receives an expose event. More... | |
void | init () |
Initialization, when the interactor is attached to a view. More... | |
virtual void | insertPoint (IlvEvent &event, IlInt segment, const IlvPoint &p, IlDouble param) |
Inserts a point at the location given by segment and param. More... | |
virtual void | removePoint (IlvEvent &event, IlUInt index) |
Removes the selected point from the curve, in response to a user event. More... | |
virtual IlvPolyPoints * | selectObject (IlvPoint &point) |
Returns a polypoint containing a given point. More... | |
Public Member Functions inherited from IlvManagerViewInteractor | |
IlvManagerViewInteractor (IlvManager *manager, IlvView *view) | |
Initializes a new IlvManagerViewInteractor . More... | |
virtual void | ensureVisible (const IlvPoint &point) |
Ensures the visibility of a given location. More... | |
IlvDisplay * | getDisplay () const |
Returns the display of the manager view. More... | |
IlvManager * | getManager () const |
Returns the manager. More... | |
IlvTransformer * | getTransformer () const |
Returns the transformer used with the manager view. More... | |
IlvView * | getView () const |
Returns the manager view. More... | |
Manager interactor class.
Library: ilvmgr
The IlvEditPointsInteractor
class lets you handle the editing of IlvPolyPoints
objects such as splines and polylines in a view controlled by a manager. Once you click the IlvPolyPoints
object, each point can be moved independently, and the constraints relating to the edited objects are taken into account to offer better usability.
IlvEditPointsInteractor::IlvEditPointsInteractor | ( | IlvManager * | manager, |
IlvView * | view | ||
) |
Constructor.
Calls the constructor of the parent class.
manager | The manager. |
view | The manager view. |
|
virtual |
Aborts the interaction.
Called by the manager when the user changes the current interactor. It resets the interactor to a state in which it appears to have never been launched. A common implementation is to erase the ghost image. Call this member function to inhibit the interactor action in particular circumstances.
Reimplemented from IlvManagerViewInteractor.
|
virtual |
Returns a new IlvPolyPointsSelection
.
Creates an instance of IlvPolyPointsSelection
that defines the given IlvPolyPoints
object. Depending on the type of polypt
, a IlvPolyPointsSelection
or a IlvSplineSelection
is returned.
IlvPolyPointsSelection
object. polypt | The polypoint. |
|
virtual |
Visual feedback during the interaction.
Called to draw a preview image of the resulting user action (the ghost image of the interactor). This function is generally invoked by IlvManagerViewInteractor::handleEvent()
as a response to user events.
Reimplemented from IlvManagerViewInteractor.
Handles events for the manager view.
Called by the manager for which the interactor was created with every event it receives in the interactor view.
IlTrue
if the event is consumed, IlFalse
otherwise. Implements IlvManagerViewInteractor.
|
virtual |
Called when the manager view receives an expose event.
Called by the manager when an exposure request occurs in the interactor view to redraw shapes handled by the interactor, such as a ghost image. The basic implementation calls the member function IlvManagerViewInteractor::drawGhost()
after the clipping region has been set to the exposed area.
clip | Specifies the exposed area. |
Reimplemented from IlvManagerViewInteractor.
|
virtual |
Initialization, when the interactor is attached to a view.
Resets the interactor to its initial state.
Called by the manager whenever the interactor is associated with a view. An association of this kind is established by the member function IlvManager::setInteractor()
.
Reimplemented from IlvManagerViewInteractor.
|
virtual |
Inserts a point at the location given by segment and param.
This method is called when the user presses the mouse button on the curve while holding the control key down. The effect of this method is to insert one or more points to the polypoint
event | The event that generated the call to this method. |
segment | Specifies the segment index in the polypoint. For Bezier splines, this segment is the number of points of the curve divided by 3, as a Bezier curve segments are defined by successions of 4 points. |
p | The point at which the user clicked. |
param | The parametric coordinate of the location where to insert the point. This is a number between 0 and 1 that describes the relative location of the clicked point within its segment. |
Removes the selected point from the curve, in response to a user event.
This method is called when the user presses the backspace or delete keys and a point is currently selected.
event | The event that generated the call to this method. |
index | The currently selected point in the polypoints. |
|
virtual |
Returns a polypoint containing a given point.
IlvPolyPoints
that contains the point point
. point | The point. |
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