Module org.jhotdraw8.draw
Package org.jhotdraw8.draw.tool

Class SimpleDragTracker

java.lang.Object
org.jhotdraw8.application.AbstractDisableable
org.jhotdraw8.draw.tool.AbstractTracker
org.jhotdraw8.draw.tool.SimpleDragTracker
All Implemented Interfaces:
DragTracker, Tracker, Disableable
public class SimpleDragTracker extends AbstractTracker implements DragTracker
|@code SimpleDragTracker} implements interactions with the content area of a Figure.

The DefaultDragTracker handles one of the three states of the SelectionTool. It comes into action, when the user presses the mouse button over the content area of a Figure.

Design pattern:
Name: Chain of Responsibility.
Role: Handler.
Partners: SelectionTool as Handler, SelectAreaTracker as Handler, HandleTracker as Handler.

Design pattern:
Name: State.
Role: State.
Partners: SelectAreaTracker as State, SelectionTool as Context, HandleTracker as State.

Author:
Werner Randelshofer
See Also:

  • Constructor Details

    • SimpleDragTracker

      public SimpleDragTracker()

  • Method Details

    • setDraggedFigure

      public void setDraggedFigure(Figure anchor, @NonNull DrawingView view)
      Specified by:
      setDraggedFigure in interface DragTracker

    • trackMousePressed

      public void trackMousePressed(@NonNull javafx.scene.input.MouseEvent event, @NonNull DrawingView view)
      Description copied from interface: Tracker
      Handle input event forwarded from the parent Tool.
      Specified by:
      trackMousePressed in interface Tracker
      Parameters:
      event - an event
      view - a view

    • trackMouseReleased

      public void trackMouseReleased(javafx.scene.input.MouseEvent event, @NonNull DrawingView dv)
      Description copied from interface: Tracker
      Handle input event forwarded from the parent Tool.
      Specified by:
      trackMouseReleased in interface Tracker
      Parameters:
      event - an event
      dv - a view

    • trackMouseClicked

      public void trackMouseClicked(javafx.scene.input.MouseEvent event, DrawingView dv)
      Description copied from interface: Tracker
      Handle input event forwarded from the parent Tool.
      Specified by:
      trackMouseClicked in interface Tracker
      Parameters:
      event - an event
      dv - a view

    • trackMouseDragged

      public void trackMouseDragged(@NonNull javafx.scene.input.MouseEvent event, @NonNull DrawingView view)
      Description copied from interface: Tracker
      Handle input event forwarded from the parent Tool.
      Specified by:
      trackMouseDragged in interface Tracker
      Parameters:
      event - an event
      view - a view

    • trackKeyPressed

      public void trackKeyPressed(javafx.scene.input.KeyEvent event, DrawingView view)
      Specified by:
      trackKeyPressed in interface Tracker

    • trackKeyReleased

      public void trackKeyReleased(javafx.scene.input.KeyEvent event, DrawingView view)
      Specified by:
      trackKeyReleased in interface Tracker

    • trackKeyTyped

      public void trackKeyTyped(javafx.scene.input.KeyEvent event, DrawingView view)
      Specified by:
      trackKeyTyped in interface Tracker