com.jfimagine.jfgraph.shape.line
Class JFLine

java.lang.Object
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  +--com.jfimagine.jfgraph.shape.base.AbstractObject
        |
        +--com.jfimagine.jfgraph.shape.base.AbstractShape
              |
              +--com.jfimagine.jfgraph.shape.line.JFLine

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

JFPolygon

public class JFLine

extends AbstractShape

JFLine class. A line should be a two points one(one for beginning and the other for end), or n-points polyline.

Version:

$Revision: 1.1 $

Author:

CookieMaker

Field Summary

protected Arrow	m_arrow arrow format of current line.
protected LineFormat	m_lineFormat line format of current line.
protected PolyLine	m_polyLine Internal PolyLine object.
static java.lang.String	XML_LINE A XML string tag represents a Line

Fields inherited from class com.jfimagine.jfgraph.shape.base.AbstractShape

m_boundsNodeList, m_fontFormat, m_label, m_nodeList, m_portList, m_propertyList, XML_DISABLEMODIFYINGPROPERTIES, XML_DISABLEMOTION, XML_DISABLESCALING, XML_INVISIBLE, XML_LABEL, XML_SHOWLABEL

Fields inherited from class com.jfimagine.jfgraph.shape.base.AbstractObject

m_lastError, XML_OBJECTID, XML_OBJECTTYPE

Constructor Summary

JFLine()
Constructor for Line

JFLine(int[] xpoints, int[] ypoints, int npoints)
Constructor for Line

Method Summary

void	addNode(double x, double y) Add a new node for current node list.
Port	addPort(double x, double y) Add a new port to this shape.
protected void	appendChildToDOM(Element element, JFVersion version) Append necessary xml child for current element, this method will be called internally by toDOM.
java.lang.Object	clone() Creates a new object of the same class and with the same contents as this object.
protected AbstractObject	cloneMe() Creates a new AbstractObject of the same class and with the same contents as this object.
void	draw(java.awt.Graphics g, boolean isXorMode) Draw current object on graphic canvas.
protected void	drawArrow(java.awt.Graphics g) Draw current object's arrows.
boolean	equals(java.lang.Object obj) Determines whether or not two objects are equal.
protected void	extractChildFromDOM(Element element, JFVersion version) Extract needed xml child from current element, this method will be called internally by fromDOM.
boolean	finishDrawing() Finish drawing object.
void	finishMoveNode(Node node, double x, double y, java.awt.Graphics g) finish move/adjust a node of current object.
void	finishMovePolyLineNode(JFPoint newMoveNode) When move polyline node, all of its relational ports will be moved concurrently,
void	flipBy() Reverse this object by a central y coordinate of this object.
void	flipBy(double baseY) Reverse this object by a y coordinate.
Arrow	getArrow() Get the arrow format of current object.
Rect	getBounds() Get the bounds of this rectangle.
LineFormat	getLineFormat() Get the line format of current line.
JFPoint	getMoveNodePos(Node node, JFPoint movePos, int moveCase) When moving a node, in some cases, e.g. ctrl key or shift key pressed to force preserving the form of a shape, or force equilateral shapes, we need to recalculate the actual moving node's position.
int	hashCode() Returns the hashcode for this Object.
boolean	ifCompleteDrawing() If a polyline has been drew.
protected void	initPorts() Init all ports of this line.
boolean	intersects(JFPoint pnt) Test if current object intersects with a specified point.
boolean	intersects(Rect rect) Test if current object intersects with a specified rectangle.
boolean	isOpenShape() Ask if this object is an open shape,e.g. line,curve,arc,etc.
void	loadFromStream(JFReader stream, boolean skipHead, JFVersion version) Load object data from a binary stream
void	mirrorBy() Mirror this object by a central x coordinate of this object.
void	mirrorBy(double baseX) Mirror this object by a x coordinate.
void	moveBy(double x, double y) Move current object by an x and y offset.
void	moveNode(Node node, double x, double y, java.awt.Graphics g) Move/adjust a node of current object.
boolean	movePort(Port port, double x, double y) Move/adjust a port of current object.
Node	removeLastNode() Remove last node added by addNode method.
void	rotateBy(double theta) Rotate this object by an angle theta.
void	rotateBy(double baseX, double baseY, double theta) Rotate current object by a specified point and an angle theta.
void	saveToStream(JFWriter stream, JFVersion version) Save this object to a binary stream
void	scaleBy(JFPoint basePoint, double xScale, double yScale) Scale current object by a specified x and y scale.
void	scaleBy(JFPoint basePoint, JFPoint refPoint1, JFPoint refPoint2, double scale) Scale current object by specified points and scale percent.
void	setArrow(Arrow arrow) Set the arrow format of current object.
void	setLineFormat(LineFormat lineFormat) Set the line format of current line.
void	setNodeList(ObjectList nodeList) Set a node list of this shape.
void	setPortList(ObjectList portList, ObjectList shapeList) Set a port list of this shape.
void	startMoveNode(Node node) Start move a node.
java.lang.String	toString() Convert this object to String

Methods inherited from class com.jfimagine.jfgraph.shape.base.AbstractShape

addNode, attachPort, attachRealPort, attachRealPort, clearAccessTimes, detachPort, drawInvisibleBounds, drawLabel, drawLabelPicked, drawPicked, drawPort, fetchSubObjects, finishMoveLabel, getAccessTimes, getFillFormat, getFontFormat, getLabel, getNodeByIndex, getNodeByObjectId, getNodeCount, getNodeList, getPortByIndex, getPortByObjectId, getPortCount, getPortList, getPropertyByIndex, getPropertyByObjectId, getPropertyCount, getPropertyList, incAccessTimes, initBoundsNodeList, initLabel, isDisableModifyingProperties, isDisableMotion, isDisableScaling, isInvisible, isRotatable, labelIntersects, labelIntersects, moveRelationalPorts, nodeIntersects, pickPort, portIntersects, removePort, rotateNode, setDisableModifyingProperties, setDisableMotion, setDisableScaling, setFillFormat, setFontFormat, setInvisible, setLabel, setObjectId, setParent, setZoomScale, startMoveLabel, unboundBrokenPorts

Methods inherited from class com.jfimagine.jfgraph.shape.base.AbstractObject

fromDOM, getLastError, getMaxObjectId, getObjectId, getObjectType, getXMLTag, getZoomScale, isShowDesign, setLastError, setObjectType, setShowDesign, setValue, setXMLTag, toDOM

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

XML_LINE

public static final java.lang.String XML_LINE

A XML string tag represents a Line

See Also:

Constant Field Values

m_arrow

protected Arrow m_arrow

arrow format of current line.

m_lineFormat

protected LineFormat m_lineFormat

line format of current line.

m_polyLine

protected PolyLine m_polyLine

Internal PolyLine object.

Constructor Detail

JFLine

public JFLine()

Constructor for Line

JFLine

public JFLine(int[] xpoints,
              int[] ypoints,
              int npoints)

Constructor for Line

Parameters:

xpoints - an array of x coordinates

ypoints - an array of y coordinates

npoints - the total number of points in the Polygon

Method Detail

getArrow

public Arrow getArrow()

Get the arrow format of current object.

Overrides:

getArrow in class AbstractShape

Returns:

The arrow format.

setArrow

public void setArrow(Arrow arrow)

Set the arrow format of current object.

Overrides:

setArrow in class AbstractShape

Parameters:

arrow - A new arrow format object.

getLineFormat

public LineFormat getLineFormat()

Get the line format of current line.

Overrides:

getLineFormat in class AbstractShape

Returns:

The line format.

setLineFormat

public void setLineFormat(LineFormat lineFormat)

Set the line format of current line.

Overrides:

setLineFormat in class AbstractShape

Parameters:

lineFormat - A new line format.

getBounds

public Rect getBounds()

Get the bounds of this rectangle.

Overrides:

getBounds in class AbstractShape

Returns:

The bounds rectangle of current rectangle.

isOpenShape

public boolean isOpenShape()

Ask if this object is an open shape,e.g. line,curve,arc,etc.

Overrides:

isOpenShape in class AbstractShape

Returns:

true if open,false closed.

setNodeList

public void setNodeList(ObjectList nodeList)

Set a node list of this shape.

Overrides:

setNodeList in class AbstractShape

Parameters:

nodeList - A new node list.

addNode

public void addNode(double x,
                    double y)

Add a new node for current node list. here this method will always be called by DrawState class or any drawing class.

Overrides:

addNode in class AbstractShape

removeLastNode

public Node removeLastNode()

Remove last node added by addNode method.

Overrides:

removeLastNode in class AbstractShape

Returns:

Last node that remained.

ifCompleteDrawing

public boolean ifCompleteDrawing()

If a polyline has been drew.

Overrides:

ifCompleteDrawing in class AbstractShape

Returns:

True when complete, false otherwise.

drawArrow

protected void drawArrow(java.awt.Graphics g)

Draw current object's arrows.

draw

public void draw(java.awt.Graphics g,
                 boolean isXorMode)

Draw current object on graphic canvas.

Specified by:

draw in class AbstractShape

Parameters:

g - A graphic canvas.

isXorMode - If is in xor mode now.

intersects

public boolean intersects(JFPoint pnt)

Test if current object intersects with a specified point.

Specified by:

intersects in class AbstractShape

Parameters:

pnt - A JFPoint used to test intersection.

intersects

public boolean intersects(Rect rect)

Test if current object intersects with a specified rectangle.

Specified by:

intersects in class AbstractShape

Parameters:

rect - A Rect used to test intersection.

scaleBy

public void scaleBy(JFPoint basePoint,
                    JFPoint refPoint1,
                    JFPoint refPoint2,
                    double scale)

Scale current object by specified points and scale percent. We only support a concurrent width-height scale here, suppose width as the length from basePoint to refPoint1, height as the length from basePoint to refPoint2, and one scale percent acts on both width and height.

Specified by:

scaleBy in class AbstractShape

Parameters:

basePoint - A base point that is unmovable.

refPoint1 - A 'width' reference point.

refPoint2 - A 'height' reference point.

scale - A reference scale percent.

scaleBy

public void scaleBy(JFPoint basePoint,
                    double xScale,
                    double yScale)

Scale current object by a specified x and y scale.
This is a special scale method used to scale a shape in arbitrary x and y scale.
Please see AbstractShape.scaleBy for detailed description.

Specified by:

scaleBy in class AbstractShape

Parameters:

basePoint - A base scale point for scaling reference.

xScale - A scale percentage in x coordinate, default to 1.0

yScale - A scale percentage in y coordinate, default to 1.0

moveBy

public void moveBy(double x,
                   double y)

Move current object by an x and y offset.

Specified by:

moveBy in class AbstractShape

rotateBy

public void rotateBy(double theta)

Rotate this object by an angle theta.

Specified by:

rotateBy in class AbstractShape

Parameters:

theta - A rotate angle.

rotateBy

public void rotateBy(double baseX,
                     double baseY,
                     double theta)

Rotate current object by a specified point and an angle theta.

Specified by:

rotateBy in class AbstractShape

Parameters:

theta - A rotate angle.

mirrorBy

public void mirrorBy()

Mirror this object by a central x coordinate of this object. We make a left-right flip here.

Specified by:

mirrorBy in class AbstractShape

mirrorBy

public void mirrorBy(double baseX)

Mirror this object by a x coordinate. We make a left-right mirror here.

Specified by:

mirrorBy in class AbstractShape

Parameters:

baseX - A mirror base x coordinate.

flipBy

public void flipBy()

Reverse this object by a central y coordinate of this object. We make a up-down flip here.

Specified by:

flipBy in class AbstractShape

flipBy

public void flipBy(double baseY)

Reverse this object by a y coordinate. We make a up-down flip here.

Specified by:

flipBy in class AbstractShape

Parameters:

baseY - A flip base y coordinate.

initPorts

protected void initPorts()

Init all ports of this line. An object will always has its one or more stable ports and some customized ports, for JFLine, it will has two stable ports as below, port1 at start point of the line. port2 at end point of the line.

setPortList

public void setPortList(ObjectList portList,
                        ObjectList shapeList)

Set a port list of this shape.

Overrides:

setPortList in class AbstractShape

Parameters:

portList - A new port list.

shapeList - All shape objects in a list.

addPort

public Port addPort(double x,
                    double y)

Add a new port to this shape.

Overrides:

addPort in class AbstractShape

getMoveNodePos

public JFPoint getMoveNodePos(Node node,
                              JFPoint movePos,
                              int moveCase)

When moving a node, in some cases, e.g. ctrl key or shift key pressed to force preserving the form of a shape, or force equilateral shapes, we need to recalculate the actual moving node's position.

Overrides:

getMoveNodePos in class AbstractShape

Parameters:

movePos - Desire moving position of a node.

moveCase - Move case of a node, normal, shift key pressed or ctrl key pressed

Returns:

The actual moving position of a node.

startMoveNode

public void startMoveNode(Node node)

Start move a node.

Overrides:

startMoveNode in class AbstractShape

Parameters:

node - The node will be moved.

finishMovePolyLineNode

public void finishMovePolyLineNode(JFPoint newMoveNode)

When move polyline node, all of its relational ports will be moved concurrently,

Parameters:

newMoveNode - Currently moving node.

finishMoveNode

public void finishMoveNode(Node node,
                           double x,
                           double y,
                           java.awt.Graphics g)

finish move/adjust a node of current object.

Overrides:

finishMoveNode in class AbstractShape

Parameters:

node - Currently moving node.

g - current drawing canvas.

moveNode

public void moveNode(Node node,
                     double x,
                     double y,
                     java.awt.Graphics g)

Move/adjust a node of current object.

Overrides:

moveNode in class AbstractShape

Parameters:

node - Currently moving node.

g - current drawing canvas.

movePort

public boolean movePort(Port port,
                        double x,
                        double y)

Move/adjust a port of current object. A move port event will always occured by relative objects' moving event.

Overrides:

movePort in class AbstractShape

Parameters:

port - Currently moving port.

Returns:

True if successfully moved, false otherwise.

finishDrawing

public boolean finishDrawing()

Finish drawing object.

Overrides:

finishDrawing in class AbstractShape

toString

public java.lang.String toString()

Convert this object to String

Overrides:

toString in class AbstractShape

Returns:

An string represents the content of the object

cloneMe

protected AbstractObject cloneMe()
                          throws java.lang.CloneNotSupportedException

Creates a new AbstractObject of the same class and with the same contents as this object. This method implements the method defined in AbstractObject.

Specified by:

cloneMe in class AbstractObject

Returns:

A clone of this class.

java.lang.CloneNotSupportedException

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Creates a new object of the same class and with the same contents as this object.

Overrides:

clone in class AbstractShape

Returns:

A clone of this instance.

java.lang.CloneNotSupportedException

hashCode

public int hashCode()

Returns the hashcode for this Object.

Overrides:

hashCode in class AbstractShape

Returns:

hash code for this Point2D.

equals

public boolean equals(java.lang.Object obj)

Determines whether or not two objects are equal.

Overrides:

equals in class AbstractShape

Parameters:

obj - an object to be compared with this object

Returns:

true if the object to be compared is an instance of Port and has the same values; false otherwise.

appendChildToDOM

protected void appendChildToDOM(Element element,
                                JFVersion version)

Append necessary xml child for current element, this method will be called internally by toDOM.

Overrides:

appendChildToDOM in class AbstractShape

Parameters:

element - A XML element to append child xml nodes

version - A file version notification so this object can obey the rules to save data.

extractChildFromDOM

protected void extractChildFromDOM(Element element,
                                   JFVersion version)

Extract needed xml child from current element, this method will be called internally by fromDOM.

Overrides:

extractChildFromDOM in class AbstractShape

Parameters:

element - An element used to extract needed xml child

version - A file version notification so this object can obey the rules to fetch data.

saveToStream

public void saveToStream(JFWriter stream,
                         JFVersion version)
                  throws java.io.IOException

Save this object to a binary stream

Overrides:

saveToStream in class AbstractShape

Parameters:

stream - An binary output stream

version - A file version notification so this object can obey the rules to save data.

Throws:

java.io.IOException

loadFromStream

public void loadFromStream(JFReader stream,
                           boolean skipHead,
                           JFVersion version)
                    throws java.io.IOException

Load object data from a binary stream

Overrides:

loadFromStream in class AbstractShape

Parameters:

stream - An binary input stream

skipHead - Skip head 'TYPE' check, an shape object should always has its own shape-type stored, if this shape-type has already been readed, this loadFromStream should/could not read the type anymore.

version - A file version notification so this object can obey the rules to fetch data.

Throws:

java.io.IOException