net.sf.jaxodraw.gui.grid
Class JaxoDefaultGrid

java.lang.Object
  net.sf.jaxodraw.gui.grid.JaxoDefaultGrid

All Implemented Interfaces:

Transparency, Cloneable, JaxoGrid, JaxoPaintableGrid

public class JaxoDefaultGrid
extends Object
implements JaxoPaintableGrid, Cloneable

Paints a grid on the canvas.

Since:

2.0

Field Summary

Fields inherited from interface net.sf.jaxodraw.gui.grid.JaxoPaintableGrid

STYLE_CROSS, STYLE_DOT, STYLE_LINE, STYLE_LINE_HONEYCOMB, TYPE_HEXAGONAL, TYPE_RECTANGULAR

Fields inherited from interface java.awt.Transparency

BITMASK, OPAQUE, TRANSLUCENT

Constructor Summary

JaxoDefaultGrid(int gsize, int gtype)
Constructor.

JaxoDefaultGrid(int gsize, int gtype, Dimension canvasDim)
Constructor: Sets the dimension, type and value from the arguments.

JaxoDefaultGrid(int gsize, int gtype, int gridStyle, Color color)
Constructor: Sets the dimension to the current screen size and take the other argument values.

JaxoDefaultGrid(int gsize, int gtype, int gridStyle, Color color, Dimension canvasDim)
Constructor: Sets the dimension, type and value from the arguments.

Method Summary

void	addChangeListener(ChangeListener l) ChangeEvents will be fired everytime the actual image of the grid changes (not on canvasSize changes).
Object	clone() Standard clone with all properties at the same values.
void	copyFrom(JaxoDefaultGrid g) Copies all properties from the argument.
protected void	fireStateChanged() Notifies all listeners of a state change.
Color	getBackground() Background of the grid (filling the whole canvas).
Dimension	getCanvasSize() Size of the grid canvas.
Color	getGridColor() Color of the grid.
int	getGridSize() Returns the current size of the grid.
int	getGridStyle() Grid style (STYLE_XYZ constant).
int	getGridType() Returns the type of the grid.
int	getTransparency() Base on the 'transparent' property and the 'background' and 'gridColor' properties, assuming SRC_OVER rule.
boolean	isPainted() Determine if this grid gets painted.
boolean	isSnapped(Point p) Determines if 'p' is on the grid.
boolean	isSnapping() Check if points are currently snapped to the grid.
static JaxoDefaultGrid	newDefaultGrid() A new grid with the values from the preferences.
void	paint(Graphics2D g) Paints the grid.
void	removeChangeListener(ChangeListener l) Removes a change listener.
void	setBackground(Color value) Sets the grid background color.
void	setCanvasSize(Dimension value) Sets the size of the grid canvas.
void	setGridColor(Color value) Sets the color of the grid points.
void	setGridSize(int value) Sets the size of the grid to the given value.
void	setGridStyle(int value) Set style, and repaint.
void	setGridType(int value) Sets the type of the grid (TYPE_XYZ).
void	setPainted(boolean painted) Determine if this grid gets painted.
void	setSnapping(boolean snapping) Switch on/off the snapping of this grid.
Point	snappedPoint(Point p) Closest point to 'p' on the grid.
void	snapPoint(Point p) Change 'p' to the closest point on the grid.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JaxoDefaultGrid

public JaxoDefaultGrid(int gsize,
                       int gtype)

Constructor.

Parameters:

gsize - The grid size to be set.

gtype - The grid type to be set.

JaxoDefaultGrid

public JaxoDefaultGrid(int gsize,
                       int gtype,
                       int gridStyle,
                       Color color)

Constructor: Sets the dimension to the current screen size and take the other argument values.

Parameters:

gsize - The grid size to be set.

gtype - The grid type to be set.

gridStyle - The grid style to be set

color - The grid color to be set

JaxoDefaultGrid

public JaxoDefaultGrid(int gsize,
                       int gtype,
                       Dimension canvasDim)

Constructor: Sets the dimension, type and value from the arguments.

Parameters:

gsize - The grid size to be set.

gtype - The grid type to be set.

canvasDim - The canvasSize.

JaxoDefaultGrid

public JaxoDefaultGrid(int gsize,
                       int gtype,
                       int gridStyle,
                       Color color,
                       Dimension canvasDim)

Constructor: Sets the dimension, type and value from the arguments.

Parameters:

gsize - The grid size to be set.

gtype - The grid type to be set.

gridStyle - The grid style to be set.

color - The grid color to be set.

canvasDim - The current canvas size.

Method Detail

clone

public Object clone()
             throws CloneNotSupportedException

Standard clone with all properties at the same values.

Overrides:

clone in class Object

Returns:

A clone of this grid.

Throws:

CloneNotSupportedException - If the object's class does not support the Cloneable interface.

copyFrom

public void copyFrom(JaxoDefaultGrid g)

Copies all properties from the argument.

Parameters:

g - The grid to take the properties from.

addChangeListener

public void addChangeListener(ChangeListener l)

ChangeEvents will be fired everytime the actual image of the grid changes (not on canvasSize changes).

Specified by:

addChangeListener in interface JaxoPaintableGrid

Parameters:

l - The listener to add.

removeChangeListener

public void removeChangeListener(ChangeListener l)

Removes a change listener.

Specified by:

removeChangeListener in interface JaxoPaintableGrid

Parameters:

l - The listener to remove.

fireStateChanged

protected void fireStateChanged()

Notifies all listeners of a state change.

isSnapped

public boolean isSnapped(Point p)

Determines if 'p' is on the grid. This is equivalent to p.equals(snappedPoint(p)).

Specified by:

isSnapped in interface JaxoGrid

Parameters:

p - The point to snap.

Returns:

True if p is on the grid.

snappedPoint

public final Point snappedPoint(Point p)

Closest point to 'p' on the grid.

Specified by:

snappedPoint in interface JaxoGrid

Parameters:

p - The point to snap.

Returns:

The closest grid point.

snapPoint

public final void snapPoint(Point p)

Change 'p' to the closest point on the grid.

Specified by:

snapPoint in interface JaxoGrid

Parameters:

p - The point to snap.

getTransparency

public final int getTransparency()

Base on the 'transparent' property and the 'background' and 'gridColor' properties, assuming SRC_OVER rule.

Specified by:

getTransparency in interface Transparency

Returns:

The transparency.

paint

public final void paint(Graphics2D g)

Paints the grid.

Specified by:

paint in interface JaxoPaintableGrid

Parameters:

g - The graphics context to paint the grid.

getCanvasSize

public Dimension getCanvasSize()

Size of the grid canvas. This is the size of the area on which the grid will be painted.

Specified by:

getCanvasSize in interface JaxoPaintableGrid

Returns:

The size of the grid canvas.

setCanvasSize

public void setCanvasSize(Dimension value)

Sets the size of the grid canvas. This is the size of the area on which the grid will be painted.

Specified by:

setCanvasSize in interface JaxoPaintableGrid

Parameters:

value - The size to set.

setGridSize

public final void setGridSize(int value)

Sets the size of the grid to the given value. This is the distance between two grid points. For a hexagonal grid, the grid size is always forced to be even.

Specified by:

setGridSize in interface JaxoPaintableGrid

Parameters:

value - The grid size to be set.

getGridSize

public final int getGridSize()

Returns the current size of the grid. This is the distance between two grid points.

Specified by:

getGridSize in interface JaxoPaintableGrid

Returns:

The grid size.

setGridType

public final void setGridType(int value)

Sets the type of the grid (TYPE_XYZ).

Specified by:

setGridType in interface JaxoPaintableGrid

Parameters:

value - The gridtype to be set.

getGridType

public final int getGridType()

Returns the type of the grid.

Specified by:

getGridType in interface JaxoPaintableGrid

Returns:

The gridtype (TYPE_XYZ).

getGridColor

public final Color getGridColor()

Color of the grid.

Specified by:

getGridColor in interface JaxoPaintableGrid

Returns:

The color of the grid.

setGridColor

public void setGridColor(Color value)

Sets the color of the grid points.

Specified by:

setGridColor in interface JaxoPaintableGrid

Parameters:

value - The color to set.

getBackground

public final Color getBackground()

Background of the grid (filling the whole canvas). May be null, indicating no background painting, and is ignored in 'transparent' mode. The default is White (the default mode is transparent, so it does not matter).

Returns:

The background color.

setBackground

public void setBackground(Color value)

Sets the grid background color.

Parameters:

value - The color to set.

getGridStyle

public final int getGridStyle()

Grid style (STYLE_XYZ constant). The default is STYLE_DOT.

Specified by:

getGridStyle in interface JaxoPaintableGrid

Returns:

The grid style.

setGridStyle

public void setGridStyle(int value)

Set style, and repaint.

Specified by:

setGridStyle in interface JaxoPaintableGrid

Parameters:

value - The style to set.

newDefaultGrid

public static final JaxoDefaultGrid newDefaultGrid()

A new grid with the values from the preferences.

Returns:

A new grid.

isPainted

public boolean isPainted()

Determine if this grid gets painted. By default, a grid is painted.

Specified by:

isPainted in interface JaxoPaintableGrid

Returns:

true if the grid is switched on, false otherwise.

setPainted

public void setPainted(boolean painted)

Determine if this grid gets painted.

Specified by:

setPainted in interface JaxoPaintableGrid

Parameters:

painted - true if this grid should get painted, false otherwise.

isSnapping

public boolean isSnapping()

Check if points are currently snapped to the grid. By default snapping is off.

Specified by:

isSnapping in interface JaxoPaintableGrid

Returns:

true if this grid snaps points, false otherwise.

setSnapping

public void setSnapping(boolean snapping)

Switch on/off the snapping of this grid.

Specified by:

setSnapping in interface JaxoPaintableGrid

Parameters:

snapping - true if this grid should snap points, false otherwise.