org.jhotdraw.draw.tool

Class CreationTool

java.lang.Object

org.jhotdraw.beans.AbstractBean

org.jhotdraw.draw.tool.AbstractTool

org.jhotdraw.draw.tool.CreationTool

All Implemented Interfaces:

java.awt.event.KeyListener, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, Tool

Direct Known Subclasses:

ImageTool, SVGCreateFromFileTool, TextAreaCreationTool, TextCreationTool

public class CreationTool
extends AbstractTool

A Tool to create a new figure by drawing its bounds. The figure to be created is specified by a prototype.

To create a figure using the CreationTool, the user does the following mouse gestures on a DrawingView:

1. Press the mouse button over the DrawingView. This defines the start point of the Figure bounds.
2. Drag the mouse while keeping the mouse button pressed, and then release the mouse button. This defines the end point of the Figure bounds.

The CreationTool works well with most figures that fit into a rectangular shape or that concist of a single straight line. For figures that need additional editing after these mouse gestures, the use of a specialized creation tool is recommended. For example the TextTool allows to enter the text into a TextFigure after the user has performed the mouse gestures.

Alltough the mouse gestures might be fitting for the creation of a connection, the CreationTool is not suited for the creation of a ConnectionFigure. Use the ConnectionTool for this type of figures instead.

Design Patterns

Prototype
The creation tool creates new figures by cloning a prototype figure object. That's the reason why Figure extends the Cloneable interface.
Prototype: Figure; Client: CreationTool.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Figure	createdFigure The created figure.
protected java.awt.Dimension	minimalSize We set the figure to this minimal size, if it is smaller than the minimal size treshold.
protected java.awt.Dimension	minimalSizeTreshold Treshold for which we create a larger shape of a minimal size.
protected java.lang.String	presentationName A localized name for this tool.
protected Figure	prototype The prototype for new figures.
protected java.util.Map<AttributeKey,java.lang.Object>	prototypeAttributes Attributes to be applied to the created ConnectionFigure.

Fields inherited from class org.jhotdraw.draw.tool.AbstractTool

anchor, editor, isWorking, listenerList

Fields inherited from class org.jhotdraw.beans.AbstractBean

propertySupport

Constructor Summary

Constructors

Constructor and Description
CreationTool(Figure prototype) Creates a new instance with the specified prototype but without an attribute set.
CreationTool(Figure prototype, java.util.Map<AttributeKey,java.lang.Object> attributes) Creates a new instance with the specified prototype but without an attribute set.
CreationTool(Figure prototype, java.util.Map<AttributeKey,java.lang.Object> attributes, java.lang.String name) Deprecated. This constructor might go away, because the name parameter is not used.
CreationTool(java.lang.String prototypeClassName) Creates a new instance.
CreationTool(java.lang.String prototypeClassName, java.util.Map<AttributeKey,java.lang.Object> attributes)
CreationTool(java.lang.String prototypeClassName, java.util.Map<AttributeKey,java.lang.Object> attributes, java.lang.String name)

Method Summary

Modifier and Type	Method and Description
void	activate(DrawingEditor editor) Activates the tool for the given editor.
protected Figure	createFigure()
protected void	creationFinished(Figure createdFigure) This method allows subclasses to do perform additonal user interactions after the new figure has been created.
void	deactivate(DrawingEditor editor) Deactivates the tool.
protected Figure	getAddedFigure()
protected Figure	getCreatedFigure()
Figure	getPrototype()
boolean	isToolDoneAfterCreation() Returns true, if this tool fires toolDone immediately after a new figure has been created.
void	mouseDragged(java.awt.event.MouseEvent evt)
void	mousePressed(java.awt.event.MouseEvent evt)
void	mouseReleased(java.awt.event.MouseEvent evt)
void	setToolDoneAfterCreation(boolean newValue) If this is set to false, the CreationTool does not fire toolDone after a new Figure has been created.
void	updateCursor(DrawingView view, java.awt.Point p)

Methods inherited from class org.jhotdraw.draw.tool.AbstractTool

addToolListener, addUndoableEditListener, constrainPoint, constrainPoint, createActionMap, createInputMap, draw, editCopy, editCut, editDelete, editDuplicate, editPaste, fireAreaInvalidated, fireAreaInvalidated, fireBoundsInvalidated, fireToolDone, fireToolStarted, getActionMap, getDrawing, getEditor, getInputMap, getToolTipText, getView, isActive, keyPressed, keyReleased, keyTyped, maybeFireBoundsInvalidated, mouseClicked, mouseEntered, mouseExited, mouseMoved, removeToolListener, removeUndoableEditListener, setActionMap, setInputMap, supportsHandleInteraction, viewToDrawing

Methods inherited from class org.jhotdraw.beans.AbstractBean

addPropertyChangeListener, addPropertyChangeListener, clone, firePropertyChange, firePropertyChange, firePropertyChange, getPropertyChangeListeners, removePropertyChangeListener, removePropertyChangeListener

Methods inherited from class java.lang.Object

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

Field Detail

prototypeAttributes

protected java.util.Map<AttributeKey,java.lang.Object> prototypeAttributes

Attributes to be applied to the created ConnectionFigure. These attributes override the default attributes of the DrawingEditor.

presentationName

protected java.lang.String presentationName

A localized name for this tool. The presentationName is displayed by the UndoableEdit.

minimalSizeTreshold

protected java.awt.Dimension minimalSizeTreshold

Treshold for which we create a larger shape of a minimal size.

minimalSize

protected java.awt.Dimension minimalSize

We set the figure to this minimal size, if it is smaller than the minimal size treshold.

prototype

protected Figure prototype

The prototype for new figures.

createdFigure

protected Figure createdFigure

The created figure.

Constructor Detail

CreationTool

public CreationTool(java.lang.String prototypeClassName)

Creates a new instance.

CreationTool

public CreationTool(java.lang.String prototypeClassName,
                    java.util.Map<AttributeKey,java.lang.Object> attributes)

CreationTool

public CreationTool(java.lang.String prototypeClassName,
                    java.util.Map<AttributeKey,java.lang.Object> attributes,
                    java.lang.String name)

CreationTool

public CreationTool(Figure prototype)

Creates a new instance with the specified prototype but without an attribute set. The CreationTool clones this prototype each time a new Figure needs to be created. When a new Figure is created, the CreationTool applies the default attributes from the DrawingEditor to it.

Parameters:

prototype - The prototype used to create a new Figure.

CreationTool

public CreationTool(Figure prototype,
                    java.util.Map<AttributeKey,java.lang.Object> attributes)

Creates a new instance with the specified prototype but without an attribute set. The CreationTool clones this prototype each time a new Figure needs to be created. When a new Figure is created, the CreationTool applies the default attributes from the DrawingEditor to it, and then it applies the attributes to it, that have been supplied in this constructor.

Parameters:

prototype - The prototype used to create a new Figure.

attributes - The CreationTool applies these attributes to the prototype after having applied the default attributes from the DrawingEditor.

CreationTool

public CreationTool(Figure prototype,
                    java.util.Map<AttributeKey,java.lang.Object> attributes,
                    java.lang.String name)

Deprecated. This constructor might go away, because the name parameter is not used.

Creates a new instance with the specified prototype and attribute set.

Parameters:

prototype - The prototype used to create a new Figure.

attributes - The CreationTool applies these attributes to the prototype after having applied the default attributes from the DrawingEditor.

name - The name parameter is currently not used.

Method Detail

getPrototype

public Figure getPrototype()

activate

public void activate(DrawingEditor editor)

Description copied from interface: Tool

Activates the tool for the given editor. This method is called whenever the user switches to this tool.

Specified by:

activate in interface Tool

Overrides:

activate in class AbstractTool

deactivate

public void deactivate(DrawingEditor editor)

Description copied from interface: Tool

Deactivates the tool. This method is called whenever the user switches to another tool.

Specified by:

deactivate in interface Tool

Overrides:

deactivate in class AbstractTool

mousePressed

public void mousePressed(java.awt.event.MouseEvent evt)

Specified by:

mousePressed in interface java.awt.event.MouseListener

Overrides:

mousePressed in class AbstractTool

mouseDragged

public void mouseDragged(java.awt.event.MouseEvent evt)

mouseReleased

public void mouseReleased(java.awt.event.MouseEvent evt)

Specified by:

mouseReleased in interface java.awt.event.MouseListener

Overrides:

mouseReleased in class AbstractTool

createFigure

protected Figure createFigure()

getCreatedFigure

protected Figure getCreatedFigure()

getAddedFigure

protected Figure getAddedFigure()

creationFinished

protected void creationFinished(Figure createdFigure)

This method allows subclasses to do perform additonal user interactions after the new figure has been created. The implementation of this class just invokes fireToolDone.

setToolDoneAfterCreation

public void setToolDoneAfterCreation(boolean newValue)

If this is set to false, the CreationTool does not fire toolDone after a new Figure has been created. This allows to create multiple figures consecutively.

isToolDoneAfterCreation

public boolean isToolDoneAfterCreation()

Returns true, if this tool fires toolDone immediately after a new figure has been created.

updateCursor

public void updateCursor(DrawingView view,
                         java.awt.Point p)

Overrides:

updateCursor in class AbstractTool