Class NavDecorations

Method Details

• createCenterDecoration

  public static Decoration createCenterDecoration(Point p)

  Returns a simple marker at a point.

  Parameters:

  p - position

  Returns:

  position marker centered at p

• createWheelDecoration

  public static Decoration createWheelDecoration(Point p, double xfact, double yfact, boolean xuse, boolean yuse, Rectangle bounds)

  Returns a decoration appropriate for a 2d wheel zoom.

  Parameters:

  p - reference point

  xfact - X direction zoom factor

  yfact - Y direction zoom factor

  xuse - true if X zoom is in effect

  yuse - true if Y zoom is in effect

  bounds - plot region bounds

  Returns:

  marker centered at p

• createDragDecoration

  public static Decoration createDragDecoration(Point p, double xfact, double yfact, boolean xuse, boolean yuse, Rectangle bounds)

  Returns a decoration appropriate for a 2d drag zoom.

  Parameters:

  p - reference point

  xfact - X direction zoom factor

  yfact - Y direction zoom factor

  xuse - true if X zoom is in effect

  yuse - true if Y zoom is in effect

  bounds - plot region bounds

  Returns:

  marker centered at p

• createBandDecoration

  public static BandDecoration createBandDecoration(Point p1, Point p2, boolean xuse, boolean yuse, Rectangle bounds)

  Returns a decoration appropriate for a 2d frame zoom. The returned object has a target rectangle associated with it, which makes sense for this kind of decoration.

  Parameters:

  p1 - drag start point

  p2 - drag (current) end point

  xuse - true if X zoom is in effect

  yuse - true if Y zoom is in effect

  bounds - plot region bounds

  Returns:

  frame decoration with target rectangle

• center

  public static Decoration center(Icon icon, Point p)

  Utility function to center a symmetric icon at a point. The icon must correctly report its dimensions for this to work.

  Parameters:

  icon - icon

  p - central point

  Returns:

  centered decoration

• center1d

  public static Decoration center1d(Icon icon, boolean isY, Point p, Rectangle bounds)

  Utility function to center one of the 1-dimensional zoom icons about a given point on its axis. The icon must correctly report its dimensions for this to work.

  Parameters:

  icon - icon

  isY - false for X axis annotation, true for Y axis annotation

  p - reference point

  bounds - plot bounds

  Returns:

  centered decoration

• drawArrow

  public static void drawArrow(Graphics g, int x0, int y0, int x1, int y1)

  Draws a line with an arrow head at one end.

  Parameters:

  g - graphics context

  x0 - start X coordinate

  y0 - start Y coordinate

  x1 - end (arrow) X coordinate

  y1 - end (arrow) Y coordinate

• prepareGraphics

  public static Graphics2D prepareGraphics(Graphics g)

  Sets graphics context ready for navigation decorations. The colour is modified as appropriate. The result is a new graphics context, which does not need to be reset (and should be disposed) when the caller is finished with it.

  Parameters:

  g - supplied graphics context

  Returns:

  new, adjusted graphics context based on g