CH.ifa.draw.framework

Interface Handle

All Known Implementing Classes:

AbstractHandle, ChangeConnectionEndHandle, ChangeConnectionHandle, ChangeConnectionStartHandle, ConnectionHandle, ElbowHandle, FontSizeHandle, LocatorHandle, NullHandle, PolygonHandle, PolyLineHandle, SpecialConnectionHandle

public interface Handle

Handles are used to change a figure by direct manipulation. Handles know their owning figure and they provide methods to locate the handle on the figure and to track changes. Design Patterns

Adapter
Handles adapt the operations to manipulate a figure to a common interface.

See Also:

Figure

Field Summary

Fields

Modifier and Type	Field and Description
static int	HANDLESIZE

Method Summary

Modifier and Type	Method and Description
boolean	containsPoint(int x, int y) Tests if a point is contained in the handle.
java.awt.Rectangle	displayBox() Gets the display box of the handle.
void	draw(java.awt.Graphics g) Draws this handle.
void	invokeEnd(int dx, int dy, Drawing drawing) Deprecated. As of version 4.1, use invokeEnd(x, y, anchorX, anchorY, drawingView). Tracks the end of the interaction.
void	invokeEnd(int x, int y, int anchorX, int anchorY, DrawingView view) Tracks the end of the interaction.
void	invokeStart(int x, int y, Drawing drawing) Deprecated. As of version 4.1, use invokeStart(x, y, drawingView) Tracks the start of the interaction. The default implementation does nothing.
void	invokeStart(int x, int y, DrawingView view) Deprecated. As of version 4.1, use invokeStart(x, y, drawingView) Tracks the start of the interaction. The default implementation does nothing.
void	invokeStep(int dx, int dy, Drawing drawing) Deprecated. As of version 4.1, use invokeStep(x, y, anchorX, anchorY, drawingView) Tracks a step of the interaction.
void	invokeStep(int x, int y, int anchorX, int anchorY, DrawingView view) Tracks a step of the interaction.
java.awt.Point	locate() Locates the handle on the figure.
Figure	owner() Gets the handle's owner.

Field Detail

HANDLESIZE

static final int HANDLESIZE

See Also:

Constant Field Values

Method Detail

locate

java.awt.Point locate()

Locates the handle on the figure. The handle is drawn centered around the returned point.

invokeStart

void invokeStart(int x,
                 int y,
                 Drawing drawing)

Deprecated. As of version 4.1, use invokeStart(x, y, drawingView) Tracks the start of the interaction. The default implementation does nothing.

Parameters:

x - the x position where the interaction started

y - the y position where the interaction started

invokeStart

void invokeStart(int x,
                 int y,
                 DrawingView view)

Deprecated. As of version 4.1, use invokeStart(x, y, drawingView) Tracks the start of the interaction. The default implementation does nothing.

Parameters:

x - the x position where the interaction started

y - the y position where the interaction started

view - the handles container

invokeStep

void invokeStep(int dx,
                int dy,
                Drawing drawing)

Deprecated. As of version 4.1, use invokeStep(x, y, anchorX, anchorY, drawingView) Tracks a step of the interaction.

Parameters:

dx - x delta of this step

dy - y delta of this step

invokeStep

void invokeStep(int x,
                int y,
                int anchorX,
                int anchorY,
                DrawingView view)

Tracks a step of the interaction.

Parameters:

x - the current x position

y - the current y position

anchorX - the x position where the interaction started

anchorY - the y position where the interaction started

invokeEnd

void invokeEnd(int x,
               int y,
               int anchorX,
               int anchorY,
               DrawingView view)

Tracks the end of the interaction.

Parameters:

x - the current x position

y - the current y position

anchorX - the x position where the interaction started

anchorY - the y position where the interaction started

invokeEnd

void invokeEnd(int dx,
               int dy,
               Drawing drawing)

Deprecated. As of version 4.1, use invokeEnd(x, y, anchorX, anchorY, drawingView). Tracks the end of the interaction.

owner

Figure owner()

Gets the handle's owner.

displayBox

java.awt.Rectangle displayBox()

Gets the display box of the handle.

containsPoint

boolean containsPoint(int x,
                      int y)

Tests if a point is contained in the handle.

draw

void draw(java.awt.Graphics g)

Draws this handle.