GraphicsEdge Class Reference

#include <graphicsedge.h>

Inheritance diagram for GraphicsEdge:

Collaboration diagram for GraphicsEdge:

Public Types
enum	{ Type = UserType + 2 }

Public Slots
void	adjust ()
	Leaves some empty space (offset) from node - make the edge weight appear on the centre of the edge.

Public Member Functions
	GraphicsEdge (GraphicsWidget *, GraphicsNode *, GraphicsNode *, const qreal &weight, const QString &label, const QString &color, const Qt::PenStyle &style, const int &type, const bool &drawArrows, const bool &bezier, const bool &weightNumbers=false, const bool &highlighting=true)
	~GraphicsEdge ()
	‍**
int	type () const
GraphicsNode *	sourceNode () const
	Returns the source node of this graphics edge.
void	setSourceNode (GraphicsNode *node)
	Sets the source node of this graphics edge.
GraphicsNode *	targetNode () const
	Returns the target node.
void	setTargetNode (GraphicsNode *node)
	Sets the target node.s.
int	sourceNodeNumber ()
int	targetNodeNumber ()
qreal	dx () const
	Returns the horizontal difference between target and source nodes.
qreal	dy () const
	Returns the vertical difference between target and source nodes.
qreal	length () const
	Returns the euclidean length of the edge.
void	setSourceNodeSize (const int &size)
	Called from graphicsNode to update edge offset from source node (i.e. when node size changes)
void	setTargetNodeSize (const int &size)
	Called from graphicsNode to update edge offset from target node (i.e. when node size changes)
void	setMinimumOffsetFromNode (const int &offset)
	Updates Minimum Offset From Node and calls adjust to update the edge.
void	removeRefs ()
	Removes any references to this edge in source and target nodes.
void	setWeight (const qreal &w)
	Changes the edge weight - Updates both the width and the weightNumber.
qreal	weight () const
	Returns the weight/value of this edge.
void	addWeightNumber ()
	Adds a graphics edge weight to this edge.
void	setWeightNumberVisibility (const bool &toggle)
	Toggles visibility of weight numbers.
void	setLabel (const QString &label)
	Changes the edge label.
QString	label () const
	Returns the edge label text.
void	addLabel ()
	Adds a graphics edge label to this edge.
void	setLabelVisibility (const bool &toggle)
	Toggles the graphics edge label visibility.
void	showArrows (const bool &)
	Toggles displaying edge arrow.
void	setDirectionType (const int &dirType=0)
	Changes the direction type of edge A->B.
int	directionType ()
	returns the direction type of this edge
qreal	width () const
	Returns the width of the edge as a function of edge weight.
QPen	pen () const
	Returns the QPen for this edge – the pen changes when the edge state changes/.
void	setState (const int &state)
	Sets the edge state.
void	setStyle (const Qt::PenStyle &style)
	Sets the PenStyle of this edge.
Qt::PenStyle	style () const
	Returns the PenStyle of this edge.
void	setColor (const QString &str)
	Sets the edge color.
QColor	color () const
	Returns the edge QColor.
QString	colorToPajek ()
	Returns the edge color in pajek-accepted format.
void	setHighlighted (const bool &flag)
	Toggles the highlighted state of the the edge, if highlighting is allowed.
void	setHighlighting (const bool &toggle)
	Toggles edge highlighting on or off.
QPainterPath	shape () const
	Returns the shape of this edge as a QPainterPath in local coordinates. The shape is used for many things, including collision detection, hit tests, and for the QGraphicsScene::items() functions. The default implementation calls boundingRect() to return a simple rectangular shape, but we reimplement it to return a more accurate shape for non-rectangular items.

Protected Member Functions
QRectF	boundingRect () const
	Defines the outer bounds of the edge as a rectangle; All painting will be restricted to inside the edge's bounding rect. Qt uses this bounding rect to determine whether the edge requires redrawing.
void	paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)
	Pains the edge.
QVariant	itemChange (GraphicsItemChange change, const QVariant &value)
	Called when the edge changes, i.e. moves, becomes disabled or changes its visibility.

Private Attributes
GraphicsWidget *	graphicsWidget
GraphicsNode *	source
GraphicsNode *	target
GraphicsEdgeWeight *	weightNumber
GraphicsEdgeLabel *	edgeLabel
QPainterPath	m_path
QPointF	sourcePoint
QPointF	targetPoint
QPointF	edgeOffset
qreal	m_arrowSize
qreal	m_minOffsetFromNode
qreal	m_offsetFromTargetNode
qreal	m_offsetFromSourceNode
Qt::PenStyle	m_style
int	m_state
QString	m_colorNegative
QString	m_label
QColor	m_color
qreal	m_weight
qreal	m_width
int	m_edgeDirType
qreal	angle
qreal	line_length
qreal	line_dx
qreal	line_dy
bool	m_Bezier
bool	m_drawArrows
bool	m_drawWeightNumber
bool	m_drawLabel
bool	m_hoverHighlighting
bool	m_isClicked

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
Type

Constructor & Destructor Documentation

GraphicsEdge()

SOCNETV_USE_NAMESPACE GraphicsEdge::GraphicsEdge	(	GraphicsWidget *	gw,
		GraphicsNode *	from,
		GraphicsNode *	to,
		const qreal &	weight,
		const QString &	label,
		const QString &	color,
		const Qt::PenStyle &	style,
		const int &	type,
		const bool &	drawArrows,
		const bool &	bezier,
		const bool &	weightNumbers = false,
		const bool &	highlighting = true
	)

~GraphicsEdge()

GraphicsEdge::~GraphicsEdge

(

)

‍**

Member Function Documentation

addLabel()

void GraphicsEdge::addLabel

(

)

Adds a graphics edge label to this edge.

addWeightNumber()

void GraphicsEdge::addWeightNumber

(

)

Adds a graphics edge weight to this edge.

adjust

void GraphicsEdge::adjust ( )

slot

Leaves some empty space (offset) from node - make the edge weight appear on the centre of the edge.

boundingRect()

QRectF GraphicsEdge::boundingRect ( ) const

protected

Defines the outer bounds of the edge as a rectangle; All painting will be restricted to inside the edge's bounding rect. Qt uses this bounding rect to determine whether the edge requires redrawing.

Returns

color()

QColor GraphicsEdge::color

(

)

const

Returns the edge QColor.

Returns

colorToPajek()

QString GraphicsEdge::colorToPajek

(

)

Returns the edge color in pajek-accepted format.

Called from Graph

Returns

directionType()

int GraphicsEdge::directionType

(

)

returns the direction type of this edge

Returns

dx()

qreal GraphicsEdge::dx

(

)

const

Returns the horizontal difference between target and source nodes.

Returns

dy()

qreal GraphicsEdge::dy

(

)

const

Returns the vertical difference between target and source nodes.

Returns

itemChange()

QVariant GraphicsEdge::itemChange ( GraphicsItemChange  change, const QVariant &  value  )

protected

Called when the edge changes, i.e. moves, becomes disabled or changes its visibility.

Parameters

change
value

Returns

label()

QString GraphicsEdge::label

(

)

const

Returns the edge label text.

Returns

QString

length()

qreal GraphicsEdge::length

(

)

const

Returns the euclidean length of the edge.

Returns

paint()

void GraphicsEdge::paint ( QPainter *  painter, const QStyleOptionGraphicsItem *  option, QWidget *  widget  )

protected

Pains the edge.

Parameters

painter
option

pen()

QPen GraphicsEdge::pen

(

)

const

Returns the QPen for this edge – the pen changes when the edge state changes/.

Returns

removeRefs()

void GraphicsEdge::removeRefs

(

)

Removes any references to this edge in source and target nodes.

setColor()

void GraphicsEdge::setColor

(

const QString &

str

)

Sets the edge color.

Parameters

str

setDirectionType()

void GraphicsEdge::setDirectionType

(

const int &

dirType = 0

)

Changes the direction type of edge A->B.

setHighlighted()

void GraphicsEdge::setHighlighted

(

const bool &

flag

)

Toggles the highlighted state of the the edge, if highlighting is allowed.

Called from GraphicsNode when the user hovers over the node.

Parameters

flag

setHighlighting()

void GraphicsEdge::setHighlighting

(

const bool &

toggle

)

Toggles edge highlighting on or off.

If enabled, the edge can be highlighted.

Parameters

toggle

setLabel()

void GraphicsEdge::setLabel

(

const QString &

label

)

Changes the edge label.

Called from MW when user wants to change an edge's label

Parameters

label

setLabelVisibility()

void GraphicsEdge::setLabelVisibility

(

const bool &

toggle

)

Toggles the graphics edge label visibility.

Parameters

toggle

setMinimumOffsetFromNode()

void GraphicsEdge::setMinimumOffsetFromNode

(

const int &

offset

)

Updates Minimum Offset From Node and calls adjust to update the edge.

Parameters

offset

setSourceNode()

void GraphicsEdge::setSourceNode

(

GraphicsNode *

node

)

Sets the source node of this graphics edge.

Parameters

node

setSourceNodeSize()

void GraphicsEdge::setSourceNodeSize

(

const int &

size

)

Called from graphicsNode to update edge offset from source node (i.e. when node size changes)

Parameters

offset

setState()

void GraphicsEdge::setState

(

const int &

state

)

Sets the edge state.

Parameters

state

setStyle()

void GraphicsEdge::setStyle

(

const Qt::PenStyle &

style

)

Sets the PenStyle of this edge.

Parameters

style

setTargetNode()

void GraphicsEdge::setTargetNode

(

GraphicsNode *

node

)

Sets the target node.s.

Parameters

node

setTargetNodeSize()

void GraphicsEdge::setTargetNodeSize

(

const int &

size

)

Called from graphicsNode to update edge offset from target node (i.e. when node size changes)

Parameters

offset

setWeight()

void GraphicsEdge::setWeight

(

const qreal &

w

)

Changes the edge weight - Updates both the width and the weightNumber.

Called from MW when user wants to change an edge's weight.

Parameters

w

setWeightNumberVisibility()

void GraphicsEdge::setWeightNumberVisibility

(

const bool &

toggle

)

Toggles visibility of weight numbers.

Parameters

toggle

shape()

QPainterPath GraphicsEdge::shape

(

)

const

Returns the shape of this edge as a QPainterPath in local coordinates. The shape is used for many things, including collision detection, hit tests, and for the QGraphicsScene::items() functions. The default implementation calls boundingRect() to return a simple rectangular shape, but we reimplement it to return a more accurate shape for non-rectangular items.

Returns

QPainterPath

showArrows()

void GraphicsEdge::showArrows

(

const bool &

drawArrows

)

Toggles displaying edge arrow.

Parameters

drawArrows

sourceNode()

GraphicsNode * GraphicsEdge::sourceNode

(

)

const

Returns the source node of this graphics edge.

Returns

sourceNodeNumber()

int GraphicsEdge::sourceNodeNumber

(

)

Returns the source node number

Returns

int

style()

Qt::PenStyle GraphicsEdge::style

(

)

const

Returns the PenStyle of this edge.

Returns

targetNode()

GraphicsNode * GraphicsEdge::targetNode

(

)

const

Returns the target node.

Returns

targetNodeNumber()

int GraphicsEdge::targetNodeNumber

(

)

Returns the target node number

Returns

int

type()

int GraphicsEdge::type ( ) const

inline

weight()

qreal GraphicsEdge::weight

(

)

const

Returns the weight/value of this edge.

Returns

width()

qreal GraphicsEdge::width

(

)

const

Returns the width of the edge as a function of edge weight.

Returns

Field Documentation

angle

qreal GraphicsEdge::angle

private

edgeLabel

GraphicsEdgeLabel* GraphicsEdge::edgeLabel

private

edgeOffset

QPointF GraphicsEdge::edgeOffset

private

graphicsWidget

GraphicsWidget* GraphicsEdge::graphicsWidget

private

line_dx

qreal GraphicsEdge::line_dx

private

line_dy

qreal GraphicsEdge::line_dy

private

line_length

qreal GraphicsEdge::line_length

private

m_arrowSize

qreal GraphicsEdge::m_arrowSize

private

m_Bezier

bool GraphicsEdge::m_Bezier

private

m_color

QColor GraphicsEdge::m_color

private

m_colorNegative

QString GraphicsEdge::m_colorNegative

private

m_drawArrows

bool GraphicsEdge::m_drawArrows

private

m_drawLabel

bool GraphicsEdge::m_drawLabel

private

m_drawWeightNumber

bool GraphicsEdge::m_drawWeightNumber

private

m_edgeDirType

int GraphicsEdge::m_edgeDirType

private

m_hoverHighlighting

bool GraphicsEdge::m_hoverHighlighting

private

m_isClicked

bool GraphicsEdge::m_isClicked

private

m_label

QString GraphicsEdge::m_label

private

m_minOffsetFromNode

qreal GraphicsEdge::m_minOffsetFromNode

private

m_offsetFromSourceNode

qreal GraphicsEdge::m_offsetFromSourceNode

private

m_offsetFromTargetNode

qreal GraphicsEdge::m_offsetFromTargetNode

private

m_path

QPainterPath GraphicsEdge::m_path

private

m_state

int GraphicsEdge::m_state

private

m_style

Qt::PenStyle GraphicsEdge::m_style

private

m_weight

qreal GraphicsEdge::m_weight

private

m_width

qreal GraphicsEdge::m_width

private

source

GraphicsNode* GraphicsEdge::source

private

sourcePoint

QPointF GraphicsEdge::sourcePoint

private

target

GraphicsNode * GraphicsEdge::target

private

targetPoint

QPointF GraphicsEdge::targetPoint

private

weightNumber

GraphicsEdgeWeight* GraphicsEdge::weightNumber

private

---

The documentation for this class was generated from the following files:

• /home/dimitris/socnetv/app/src/graphicsedge.h
• /home/dimitris/socnetv/app/src/graphicsedge.cpp