Interface JaxoDrawingArea

All Superinterfaces:
EventListener, JaxoCanvasComponent, JaxoLocalized, PropertyChangeListener, Scrollable
All Known Implementing Classes:
AbstractJaxoCanvas, JaxoCanvas
public interface JaxoDrawingArea extends JaxoCanvasComponent, PropertyChangeListener, Scrollable, JaxoLocalized
The drawing area.
Since:
2.1

  • Field Details

    • DEFAULT_HELP_COLOR

      static final Color DEFAULT_HELP_COLOR
      Default visualAid color.

    • DEFAULT_HELP_STROKE

      static final Stroke DEFAULT_HELP_STROKE
      Default visualAid Stroke.

  • Method Details

    • clear

      void clear()
      Clears the drawing area.

    • continueEdit

      void continueEdit(Point p, Point last)
      Continue an edit actione that has been initiated before.
      Parameters:
      p - the point on this drawing area associated with the edit action.
      last - the last recorded action point, or null if none.

    • continueSelect

      void continueSelect(Point p)
      Carry on a select action that was started previously.
      Parameters:
      p - the current point of the select action.

    • copyMarkedObjects

      void copyMarkedObjects()
      Puts the current clipboard to the system clipboard.

    • cutMarkedObjects

      void cutMarkedObjects()
      Copies the current clipboard to the system clipboard and removes the corresponding objects from the drawing area.

    • editNearestObject

      void editNearestObject(Point p)
      Determine the closest object to the given point and bring up an edit panel for it.
      Parameters:
      p - the test point

    • finalizeEdit

      void finalizeEdit()
      Finalize a user input action.

    • finalizeSelect

      void finalizeSelect(Point p)
      End a select action.
      Parameters:
      p - the point where the select action was finished.

    • getClipboard

      JaxoGraph getClipboard()
      Gets the current clipboard. This never returns null.
      Returns:
      A JaxoGraph holding all the objects that are currently on the clipboard, or an empty graph, if the clipboard is empty.

    • getZoom

      JaxoZoom getZoom()
      Return a zoom on this drawing area.
      Returns:
      a zoom on this drawing area.

    • groupMarkedObjects

      void groupMarkedObjects()
      Groups the currently marked objects.

    • initiateEdit

      void initiateEdit(Point p)
      Start an edit action at a given point.
      Parameters:
      p - the point associated with the edit action.

    • initiateSelect

      void initiateSelect(Point p)
      Start a select action.
      Parameters:
      p - the point where the select action was started.

    • markImageInvalid

      void markImageInvalid(Rectangle boundingBox)
      Mark the specified region as invalid. Currently this is also synchronous.
      Parameters:
      boundingBox - The region to update. May be null in which case the whole image is marked for update.

    • moveSelection

      void moveSelection(boolean backGround)
      Moves the currently selected objects into either fore- or background.
      Parameters:
      backGround - True for moving into background, false for foreground.

    • moveGraph

      void moveGraph(int dx, int dy)
      Displace the whole graph by a given offset.
      Parameters:
      dx - the offset in x direction.
      dy - the offset in y direction.

    • pasteFromClipboard

      void pasteFromClipboard()
      Paste the graph currently on the clipboard into this drawing area.

    • refresh

      void refresh()
      Refresh the canvas. This should basically clean up any drawing operation and repaint the drawing area.

    • setCanvasGraph

      void setCanvasGraph(JaxoGraph value)
      Sets the graph to be painted.
      Parameters:
      value - The graph to be set.

    • setGrid

      void setGrid(JaxoPaintableGrid value)
      Sets the grid to be painted on this drawing area.
      Parameters:
      value - The new grid. May be null.

    • ungroupMarkedObjects

      void ungroupMarkedObjects()
      Ungroup all marked objects. This is not recursive, only one level is resolved.

    • unMarkGraph

      boolean unMarkGraph()
      Sets all objects in the current graph as not marked.
      Returns:
      true if the graph had actually contained marked objects. In this case the canvas was also repainted. False otherwise, in which case this method has no effect.

    • updatePointsAid

      void updatePointsAid(Point p)
      Updates the visual aid that is painted for objects in click-move mode.
      Parameters:
      p - the current location of the cursor.