fdda.dialog.java2d
Class Java2DControl

java.lang.Object
  |
  +--fdda.dialog.java2d.Java2DControl

All Implemented Interfaces:

GraphicHolder, GraphicsControl, SelectionModifier, SwingGraphicsControl

public class Java2DControl

extends Object

implements SwingGraphicsControl, GraphicHolder, SelectionModifier

Controls the graphics of the java2d component. That is, it performs the actions requested by the user through menus or mouse manipulation, partly by delegating them to a manipulator. Also controls the automatic painting of the graphical system and its zoom.

Author:

Jörg Rüdenauer

Nested Class Summary

(package private) class

Java2DControl.ZoomablePanel A panel that can be zoomed using an AffineTransform

Field Summary

static Color	GREY the color grey
static double	ZOOM_OUT_SCALE scale factor for one zoom out operation.

Fields inherited from interface fdda.dialog.GraphicsControl

DELETE, DIRECTED_LINE, LINE, NODE, POINTER, S_LOCKED, S_UNLOCKED

Constructor Summary

Java2DControl()
Constructor.

Method Summary

void	attachToFrame(JInternalFrame frame, MainFrame mainFrame) Attaches the control instance to a frame.
void	deleteSelection() Deletes selected components
int	getEditingMode() Returns the current mode
GraphicalSystem	getGraphicalSystem() Returns the graphical system
MessageControl	getMessageControl() Returns the object that manages the graphical messages.
int	getSelectedAction() Returns the currently selected action
void	paint(Graphics g) Paints the graphics, using a specified Graphics object
BufferedImage	paintOnImage() Paints the graphics on an image.
void	redraw(Rectangle clippingRect, Painter painter) Repaints a part of the screen (that should contain the graphics).
void	selectMovables() Selects all movable components.
void	setEditingMode(int mode) Changes the mode
void	setGraphicalSystem(GraphicalSystem system) Sets the graphical system that is managed
void	setSelectedAction(int action) Selects an action for the user
double	stringHeight() Returns the height of a (any) string in the current graphics context.
double	stringWidth(String s) Returns the width of a string in the current graphics context.
void	zoomIn() Zooms in.
void	zoomOut() Zooms out.

Methods inherited from class java.lang.Object

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

Field Detail

GREY

public static final Color GREY

the color grey

ZOOM_OUT_SCALE

public static final double ZOOM_OUT_SCALE

scale factor for one zoom out operation. Has to be smaller than 1.0

See Also:

Constant Field Values

Constructor Detail

Java2DControl

public Java2DControl()

Constructor.

Method Detail

attachToFrame

public void attachToFrame(JInternalFrame frame,
                          MainFrame mainFrame)

Attaches the control instance to a frame. Registers several listeners with the panel to react to user actions. The panel is added to the frame.

Specified by:

attachToFrame in interface SwingGraphicsControl

Parameters:

frame - the internal frame

mainFrame - the main frame of the application

getGraphicalSystem

public GraphicalSystem getGraphicalSystem()

Description copied from interface: GraphicHolder

Returns the graphical system

Specified by:

getGraphicalSystem in interface GraphicHolder

Returns:

the graphical system

setGraphicalSystem

public void setGraphicalSystem(GraphicalSystem system)

Description copied from interface: GraphicsControl

Sets the graphical system that is managed

Specified by:

setGraphicalSystem in interface GraphicsControl

Parameters:

system - the system

redraw

public void redraw(Rectangle clippingRect,
                   Painter painter)

Description copied from interface: GraphicHolder

Repaints a part of the screen (that should contain the graphics). Closely resembles repaint of Component

Specified by:

redraw in interface GraphicHolder

Parameters:

clippingRect - a rectangle defining the clipping area

painter - the painter instance used for drawing

See Also:

Component.repaint()

stringWidth

public double stringWidth(String s)

Description copied from interface: GraphicHolder

Returns the width of a string in the current graphics context.

Specified by:

stringWidth in interface GraphicHolder

Parameters:

s - the string

Returns:

the width of the string

stringHeight

public double stringHeight()

Description copied from interface: GraphicHolder

Returns the height of a (any) string in the current graphics context.

Specified by:

stringHeight in interface GraphicHolder

Returns:

the string height

See Also:

FontMetrics.getHeight()

zoomIn

public void zoomIn()

Description copied from interface: GraphicsControl

Zooms in. Needs not to be supported.

Specified by:

zoomIn in interface GraphicsControl

zoomOut

public void zoomOut()

Description copied from interface: GraphicsControl

Zooms out. Needs not to be supported.

Specified by:

zoomOut in interface GraphicsControl

selectMovables

public void selectMovables()

Description copied from interface: GraphicsControl

Selects all movable components.

Specified by:

selectMovables in interface GraphicsControl

deleteSelection

public void deleteSelection()

Description copied from interface: GraphicsControl

Deletes selected components

Specified by:

deleteSelection in interface GraphicsControl

paint

public void paint(Graphics g)

Description copied from interface: GraphicsControl

Paints the graphics, using a specified Graphics object

Specified by:

paint in interface GraphicsControl

Parameters:

g - the graphics object

paintOnImage

public BufferedImage paintOnImage()

Description copied from interface: GraphicsControl

Paints the graphics on an image.

Specified by:

paintOnImage in interface GraphicsControl

Returns:

the new image

setEditingMode

public void setEditingMode(int mode)

Description copied from interface: GraphicsControl

Changes the mode

Specified by:

setEditingMode in interface GraphicsControl

Parameters:

mode - the new mode (one of the constants)

getEditingMode

public int getEditingMode()

Description copied from interface: GraphicsControl

Returns the current mode

Specified by:

getEditingMode in interface GraphicsControl

Returns:

the current mode

setSelectedAction

public void setSelectedAction(int action)

Description copied from interface: GraphicsControl

Selects an action for the user

Specified by:

setSelectedAction in interface GraphicsControl

Parameters:

action - the new action (one of the constants)

getSelectedAction

public int getSelectedAction()

Description copied from interface: GraphicsControl

Returns the currently selected action

Specified by:

getSelectedAction in interface GraphicsControl

Returns:

the action

getMessageControl

public MessageControl getMessageControl()

Description copied from interface: GraphicsControl

Returns the object that manages the graphical messages.

Specified by:

getMessageControl in interface GraphicsControl

Returns:

the message control object