Class DistLinePanel

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----Plane
                           |
                           +----DistLinePanel

public class DistLinePanel

extends Plane

CX

The abstract x-coordinate of the left side of the axis distance display.

CY

The abstract y-coordinate of the upper edge of the axis distance display.

inputpanel

A reference to the containing inputpanel.

previ

The location of a mousedown in this plane, to compute the extent of a drag that may occur; in pixel coordinates.

SX

The width, in abstract units, of the axis distance display.

SY

The height, in abstract units, of the axis distance display.

X

The width, in pixels, of the axis distance display.

Y

The height, in pixels, of the axis distance display.

DistLinePanel(InputPanel)

Constructor for DistLinePanels.

mouseDown(Event, int, int)

Java 1.0 handling of mouseDown events.

mouseDrag(Event, int, int)

Java 1.0 handling of mouseDrag events.

paint(Graphics)

Paint the DistLinePanel, by painting the parent Plane, putting a mark at the currently selected axis distance and making tickmarks.

zoom(double)

Scales the size of the visible window onto the line of axis distances

 public InputPanel inputpanel

A reference to the containing inputpanel.

See Also:

inputpanel

 protected int previ[]

The location of a mousedown in this plane, to compute the extent of a drag that may occur; in pixel coordinates.

 public static final double CX

The abstract x-coordinate of the left side of the axis distance display.

 public static final double CY

The abstract y-coordinate of the upper edge of the axis distance display.

 public static final double SX

The width, in abstract units, of the axis distance display.

 public static final double SY

The height, in abstract units, of the axis distance display.

 public static final int X

The width, in pixels, of the axis distance display. Good defaults are:

25

for small screens, and

50

for large screens

 public static final int Y

The height, in pixels, of the axis distance display. Good defaults are:

200

for small screens, and

300

for large screens

 public DistLinePanel(InputPanel nptpnl)

Constructor for DistLinePanels.

Parameters:

nptpnl - the ambient inputpanel

 public boolean mouseDown(Event e,
                          int x,
                          int y)

Java 1.0 handling of mouseDown events.

Parameters:

e - the event to be handled

x - the x-coordinate (in pixels) of the mouseDown

y - the y-coordinate (in pixels) of the mouseDown

Overrides:

mouseDown in class Component

 public boolean mouseDrag(Event e,
                          int x,
                          int y)

Java 1.0 handling of mouseDrag events.

Parameters:

e - the event to be handled

x - the x-coordinate (in pixels) of the mouseDrag

y - the y-coordinate (in pixels) of the mouseDrag

Overrides:

mouseDrag in class Component

 public void paint(Graphics g)

Paint the DistLinePanel, by painting the parent Plane, putting a mark at the currently selected axis distance and making tickmarks.

Parameters:

g - the Graphics object upon which to paint the DistLinePanel

Overrides:

paint in class Plane

 public void zoom(double factor)

Scales the size of the visible window onto the line of axis distances

Parameters:

factor - the scaling factor, can be any positive number