#include <graphicswidget.h>

Inheritance diagram for GraphicsWidget:

Collaboration diagram for GraphicsWidget:

Public Slots
void	getSelectedItems ()
	Emits selected nodes and edges to Graph and MW Called by QGraphicsScene::selectionChanged signal whenever the user makes a selection. Emits selectedNodes and selectedEdges lists to Graph::graphSelectionChanged() which then signals to MW::slotEditSelectionChanged to display counts on app window. More...

void	relationSet (int relation)
	Changes the current relation Called from Graph::signalRelationChangedToGW(int) signal. More...

void	drawNode (const QPointF &p, const int &num, const int &nodeSize, const QString &nodeShape, const QString &nodeIconPath, const QString &nodeColor, const QString &numberColor, const int &numberSize, const int &numberDistance, const QString &nodeLabel, const QString &labelColor, const int &labelSize, const int &labelDistance)
	Adds a new node onto the scene Called from Graph::vertexCreate method primarily when we load files It is also called in the end when the user presses "Add Node" button or the user double clicks (mouseDoubleClickEvent() calls Graph::vertexCreate) More...

void	removeNode (const int &number)
	Deletes a node from the scene. Called from Graph. More...

void	setNodeVisibility (const int &number, const bool &toggle)

void	setNodeClicked (GraphicsNode *)
	Called when the user clicks or double-clicks on a node. Clears clickedEdge and emits the userClickedNode signal to Graph to. More...

void	moveNode (const int &num, const qreal &x, const qreal &y)
	Called from activeGraph to update the coordinates of a GraphicsNode while creating random networks. More...

bool	setNodeSize (const int &nodeNumber, const int &size=0)
	Changes the size of a node. More...

void	setNodeSizeAll (const int &size=0)
	Changes the size of all nodes. More...

bool	setNodeShape (const int &nodeNumber, const QString &shape, const QString &iconPath=QString())
	Sets the shape of an node. Called from MW when the user changes the shape of a node. More...

bool	setNodeColor (const int &nodeNumber, const QString &color)
	Sets the color of an node. Called from MW when the user changes the color of a node (right-clicking). More...

void	setNodeNumberColor (const int &nodeNumber, const QString &color)
	Changes the color of a node number. More...

void	setNodeNumberVisibility (const bool &toggle)
	Toggles the visibility of node numbers. More...

bool	setNodeNumberSize (const int &nodeNumber, const int &size=0)
	Changes the size of the number of a node. More...

bool	setNodeNumberDistance (const int &, const int &distance=0)
	Changes the distance of the number of a node. More...

void	setNodeLabelsVisibility (const bool &toggle)
	GraphicsWidget::setNodeLabelsVisibility. More...

bool	setNodeLabelColor (const int &number, const QString &color="green")
	Changes the label color of a node to 'color'. More...

bool	setNodeLabelSize (const int &, const int &size=0)
	Changes the label size of a node to 'size'. More...

bool	setNodeLabel (const int &, const QString &label)
	Sets the label of an node. Called from MW. More...

bool	setNodeLabelDistance (const int &, const int &distance=0)
	Changes the distance of a node label. More...

void	drawEdge (const int &source, const int &target, const qreal &weight, const QString &label="", const QString &color="black", const int &type=0, const bool &drawArrows=true, const bool &bezier=false, const bool &weightNumbers=false)
	Draws an edge from source to target Node. Used when we do not have references to nodes but only nodeNumbers: a) when we load a network file b) when the user clicks on the AddLink button on the MW. More...

void	removeEdge (const int &source, const int &target, const bool &removeOpposite=false)
	Remove an edge from the graphics widget. Called from MW/Graph when erasing edges using vertex numbers Also called when transforming directed edges to undirected. More...

void	setEdgeVisibility (const int &relation, const int &source, const int &target, const bool &visible)
	Changes the visibility of an edge. More...

bool	setEdgeDirectionType (const int &source, const int &target, const int &dirType=false)
	Changes the direction type of an existing edge. More...

bool	setEdgeWeight (const int &, const int &, const qreal &)
	Sets the weight of an edge. Called from MW when the user changes the weight of an edge (right-clicking). More...

void	setEdgeLabel (const int &source, const int &target, const QString &label)
	Sets the label of an edge. Called from MW when the user changes the label of an edge (right-clicking). More...

void	setEdgeColor (const int &, const int &, const QString &)
	Sets the color of an edge. Called from MW when the user changes the color of an edge (right-clicking). Also called from Graph when all edge colors need to be changed. More...

void	setEdgeClicked (GraphicsEdge *, const bool &openMenu=false)
	Called when the user clicks on an edge. Emits the userClickedEdge signal to Graph which is used to: More...

void	setEdgeOffsetFromNode (const int &source, const int &target, const int &offset)
	Changes the offset of an edge (or all edges) from source and target nodes. More...

void	setEdgeArrowsVisibility (const bool &toggle)
	Toggles the visibility of all edge arrows. More...

void	setEdgeWeightNumbersVisibility (const bool &toggle)
	Toggles all edge weight numbers visibility. More...

void	setEdgeLabelsVisibility (const bool &toggle)
	Toggles all edge labels visibility. More...

void	setEdgeHighlighting (const bool &toggle)
	Toggles edge highlighting when hovering over a single edge or all edges connected to a node when the user hovers over that node. Called from MW. More...

void	startEdge (GraphicsNode *node)
	Creates a new edge, when the user middle-clicks on two nodes consecutively On the first middle-click, it saves the first node (source). On the second middle-click, it saves the second node as target and emits the signal userMiddleClicked() to MW which will notify activeGraph, which in turn will signal back to drawEdge(). More...

void	clearGuides ()

void	addGuideCircle (const double &x0, const double &y0, const double &radius)

void	addGuideHLine (const double &y0)

void	zoomIn (int level=1)
	Called from MW (magnifier button and menu icon) to increase the zoom level of the scene. By default it increases zoom by 1. More...

void	zoomOut (int level=1)
	Called from MW (magnifier button and menu icon) to decrease the zoom level of the scene. By default it decreases zoom by 1. More...

void	rotateLeft ()
	GraphicsWidget::rotateLeft. More...

void	rotateRight ()
	GraphicsWidget::rotateRight. More...

void	changeMatrixScale (const int value)
	Initiated from MW zoomSlider and rotateSlider widgets. More...

void	changeMatrixRotation (int angle)
	GraphicsWidget::changeMatrixRotation. More...

void	reset ()
	Resets the transformation matrix to the identity matrix ( default zoom and scale ) More...

void	setOptionsOpenGL (const bool &enabled=false)

void	setOptionsAntialiasing (const bool &toggle)
	Toggles QPainter renderhints for primitive edges and text antialiasing. More...

void	setOptionsNoAntialiasingAutoAdjust (const bool &toggle)
	Toggles QGraphicsView's antialiasing auto-adjustment of exposed areas. Default: false Items that render antialiased lines on the boundaries of their QGraphicsItem::boundingRect() can end up rendering parts of the line outside. To prevent rendering artifacts, QGraphicsView expands all exposed regions by 2 pixels in all directions. If you enable this flag, QGraphicsView will no longer perform these adjustments, minimizing the areas that require redrawing, which improves performance. A common side effect is that items that do draw with antialiasing can leave painting traces behind on the scene as they are moved. More...

Signals
void	userDoubleClickNewNode (const QPointF &)

void	userMiddleClicked (const int &, const int &)

void	userClickOnEmptySpace (const QPointF &p)

void	openNodeMenu ()

void	openContextMenu (const QPointF p)

void	userNodeMoved (const int &, const int &, const int &)

void	userSelectedItems (const QList< int > selectedNodes, const QList< SelectedEdge > selectedEdges)

void	userClickedNode (const int &nodeNumber, const QPointF &p)

void	userClickedEdge (const int &source, const int &target, const bool &openMenu=false)

void	zoomChanged (const int)

void	rotationChanged (const int)

void	resized (const int, const int)

void	setCursor (Qt::CursorShape)

Public Member Functions
	GraphicsWidget (QGraphicsScene m_scene, MainWindow m_parent)

	~GraphicsWidget ()

void	clear ()
	Clears the scene and all hashes, lists, var etc. More...

QString	createEdgeName (const int &v1, const int &v2, const int &relation=-1)
	creates a QString of the edge name - used for indexing edgesHash More...

void	setInitNodeSize (int)

void	setInitZoomIndex (int)
	Passes initial zoom setting Called from MW on startup. More...

GraphicsNode *	hasNode (QString text)
	Checks if a node with label or number 'text' exists and returns it. More...

void	setNodesMarked (QList< int > list)
	Selects all nodes in list Called by Graph::signalNodesFound() More...

QList< QGraphicsItem * >	selectedItems ()
	Returns a QList of all selected QGraphicsItem(s) More...

QList< int >	selectedNodes ()
	Returns a QList of selected node numbers Called by GW::getSelectedItems and MW::selectedNodes. More...

QList< SelectedEdge >	selectedEdges ()
	Returns a QList of selected directed edges structs in the form of v1,v2. More...

void	selectAll ()
	Clears any clickedNode info and sets a selection rectangle in the scene, which signals QGraphicsScene::selectionChanged signal to update selectedNodes and selectedEdges. Called from MW. More...

void	selectNone ()
	Clears any clickedNode info and any previous selection rect in the scene, which again signals selectionChanged() to update selectedNodes and selectedEdges to zero. Called from MW. More...

void	removeItem (GraphicsEdge *)
	Removes an edge item from the scene. Called from GraphicsEdge::~GraphicsEdge() to remove itself from edgesHash and scene and be deleted. More...

void	removeItem (GraphicsEdgeWeight *edgeWeight)
	Removes an edge weight number item from the scene. More...

void	removeItem (GraphicsEdgeLabel *edgeLabel)
	Removes an edge label item from the scene. More...

void	removeItem (GraphicsNode *)
	Removes a node item from the scene. Called from GraphicsNode::~GraphicsNode() to remove itself from nodeHash, scene and be deleted. More...

void	removeItem (GraphicsNodeNumber *)
	Removes a node number item from the scene. More...

void	removeItem (GraphicsNodeLabel *)
	Removes a node label item from the scene. More...

void	setNumbersInsideNodes (const bool &toggle)
	Toggles node numbers displayed inside or out of nodes Called from MW. More...

void	setAllItemsVisibility (int, bool)
	Changes the visibility of all items of certain type (i.e. number, label, edge, etc) More...

void	removeAllItems (int)

Protected Member Functions
void	wheelEvent (QWheelEvent *event)

void	mouseDoubleClickEvent (QMouseEvent *e)
	Starts the new node creation process when the user double-clicks somewhere: Emits userDoubleClicked to Graph::vertexCreate(), which in turn calls this->drawNode() to create and displays node info on MW status bar Yes, it's a full circle! More...

void	mousePressEvent (QMouseEvent *e)

void	mouseReleaseEvent (QMouseEvent *e)
	Called when user releases a mouse button, after a click. First sees what was in the position where the user clicked If a node was underneath, it calls userNodeMoved() signal for every node in scene selectedItems. More...

void	resizeEvent (QResizeEvent *e)
	Repositions guides then emits resized() signal to MW and eventually Graph which does the node repositioning maintaining proportions. More...

Private Attributes
H_NumToNode	nodeHash

H_StrToEdge	edgesHash

QList< int >	m_selectedNodes

QList< SelectedEdge >	m_selectedEdges

int	m_curRelation

int	m_nodeSize

int	m_currentRotationAngle

int	m_zoomIndex

int	markedEdgeSourceOrigSize

int	markedEdgeTargetOrigSize

int	m_edgeMinOffsetFromNode

double	m_currentScaleFactor

qreal	fX

qreal	fY

qreal	factor

QString	m_nodeLabel

QString	m_numberColor

QString	m_labelColor

QString	edgeName

bool	m_isTransformationActive

bool	secondDoubleClick

bool	clickedEdgeExists

bool	m_nodeNumbersInside

bool	m_nodeNumberVisibility

bool	m_nodeLabelVisibility

bool	m_edgeHighlighting

GraphicsNode *	firstNode

GraphicsNode *	secondNode

GraphicsNode *	markedEdgeSource

GraphicsNode *	markedEdgeTarget

GraphicsEdge *	clickedEdge

Constructor & Destructor Documentation

◆ GraphicsWidget()

GraphicsWidget::GraphicsWidget	(	QGraphicsScene *	sc,
		MainWindow *	m_parent
	)

Constructor method. Called when a GraphicsWidget object is created in MW

◆ ~GraphicsWidget()

GraphicsWidget::~GraphicsWidget ( )

Destructor.

Member Function Documentation

◆ addGuideCircle

void GraphicsWidget::addGuideCircle	(	const double &	x0,
		const double &	y0,
		const double &	radius
	)

slot

◆ addGuideHLine

void GraphicsWidget::addGuideHLine ( const double & y0 )

slot

◆ changeMatrixRotation

void GraphicsWidget::changeMatrixRotation ( int angle )

slot

GraphicsWidget::changeMatrixRotation.

Parameters

angle

◆ changeMatrixScale

void GraphicsWidget::changeMatrixScale ( const int value )

slot

Initiated from MW zoomSlider and rotateSlider widgets.

Parameters

value

◆ clear()

void GraphicsWidget::clear ( )

Clears the scene and all hashes, lists, var etc.

◆ clearGuides

void GraphicsWidget::clearGuides ( )

slot

◆ createEdgeName()

QString GraphicsWidget::createEdgeName	(	const int &	v1,
		const int &	v2,
		const int &	relation = `-1`
	)

creates a QString of the edge name - used for indexing edgesHash

Parameters

v1
v2
relation

Returns

◆ drawEdge

void GraphicsWidget::drawEdge	(	const int &	source,
		const int &	target,
		const qreal &	weight,
		const QString &	label = `""`,
		const QString &	color = `"black"`,
		const int &	type = `0`,
		const bool &	drawArrows = `true`,
		const bool &	bezier = `false`,
		const bool &	weightNumbers = `false`
	)

slot

Draws an edge from source to target Node. Used when we do not have references to nodes but only nodeNumbers: a) when we load a network file b) when the user clicks on the AddLink button on the MW.

Parameters

source
target
weight
reciprocal
drawArrows
color
bezier

◆ drawNode

void GraphicsWidget::drawNode	(	const QPointF &	p,
		const int &	num,
		const int &	nodeSize,
		const QString &	nodeShape,
		const QString &	nodeIconPath,
		const QString &	nodeColor,
		const QString &	numberColor,
		const int &	numberSize,
		const int &	numberDistance,
		const QString &	nodeLabel,
		const QString &	labelColor,
		const int &	labelSize,
		const int &	labelDistance
	)

slot

Adds a new node onto the scene Called from Graph::vertexCreate method primarily when we load files It is also called in the end when the user presses "Add Node" button or the user double clicks (mouseDoubleClickEvent() calls Graph::vertexCreate)

Parameters

num
nodeSize
nodeColor
numberColor
numberSize
nodeLabel
labelColor
labelSize
p
nodeShape
showLabels
numberInsideNode
showNumbers

◆ getSelectedItems

void GraphicsWidget::getSelectedItems ( )

slot

Emits selected nodes and edges to Graph and MW Called by QGraphicsScene::selectionChanged signal whenever the user makes a selection. Emits selectedNodes and selectedEdges lists to Graph::graphSelectionChanged() which then signals to MW::slotEditSelectionChanged to display counts on app window.

◆ hasNode()

GraphicsNode * GraphicsWidget::hasNode ( QString text )

Checks if a node with label or number 'text' exists and returns it.

Parameters

text

Returns

◆ mouseDoubleClickEvent()

void GraphicsWidget::mouseDoubleClickEvent ( QMouseEvent * e )

protected

Starts the new node creation process when the user double-clicks somewhere: Emits userDoubleClicked to Graph::vertexCreate(), which in turn calls this->drawNode() to create and displays node info on MW status bar Yes, it's a full circle!

Parameters

e

◆ mousePressEvent()

void GraphicsWidget::mousePressEvent ( QMouseEvent * e )

protected

◆ mouseReleaseEvent()

void GraphicsWidget::mouseReleaseEvent ( QMouseEvent * e )

protected

Called when user releases a mouse button, after a click. First sees what was in the position where the user clicked If a node was underneath, it calls userNodeMoved() signal for every node in scene selectedItems.

Parameters

e

◆ moveNode

void GraphicsWidget::moveNode	(	const int &	num,
		const qreal &	x,
		const qreal &	y
	)

slot

Called from activeGraph to update the coordinates of a GraphicsNode while creating random networks.

Parameters

num
x
y

◆ openContextMenu

void GraphicsWidget::openContextMenu ( const QPointF p )

signal

◆ openNodeMenu

void GraphicsWidget::openNodeMenu ( )

signal

◆ relationSet

void GraphicsWidget::relationSet ( int relation )

slot

Changes the current relation Called from Graph::signalRelationChangedToGW(int) signal.

Parameters

relation

◆ removeAllItems()

void GraphicsWidget::removeAllItems ( int type )

Removes all items of certain type (i.e. number, label, edge, etc)

◆ removeEdge

void GraphicsWidget::removeEdge	(	const int &	source,
		const int &	target,
		const bool &	removeOpposite = `false`
	)

slot

Remove an edge from the graphics widget. Called from MW/Graph when erasing edges using vertex numbers Also called when transforming directed edges to undirected.

Parameters

sourceNode
targetNode

◆ removeItem() [1/6]

void GraphicsWidget::removeItem ( GraphicsEdge * edge )

Removes an edge item from the scene. Called from GraphicsEdge::~GraphicsEdge() to remove itself from edgesHash and scene and be deleted.

Parameters

edge

◆ removeItem() [2/6]

void GraphicsWidget::removeItem ( GraphicsEdgeLabel * edgeLabel )

Removes an edge label item from the scene.

Parameters

edgeLabel

◆ removeItem() [3/6]

void GraphicsWidget::removeItem ( GraphicsEdgeWeight * edgeWeight )

Removes an edge weight number item from the scene.

Parameters

edgeWeight

◆ removeItem() [4/6]

void GraphicsWidget::removeItem ( GraphicsNode * node )

Removes a node item from the scene. Called from GraphicsNode::~GraphicsNode() to remove itself from nodeHash, scene and be deleted.

Parameters

node

◆ removeItem() [5/6]

void GraphicsWidget::removeItem ( GraphicsNodeLabel * nodeLabel )

Removes a node label item from the scene.

Parameters

nodeLabel

◆ removeItem() [6/6]

void GraphicsWidget::removeItem ( GraphicsNodeNumber * nodeNumber )

Removes a node number item from the scene.

Parameters

nodeNumber

◆ removeNode

void GraphicsWidget::removeNode ( const int & number )

slot

Deletes a node from the scene. Called from Graph.

Parameters

number

◆ reset

void GraphicsWidget::reset ( )

slot

Resets the transformation matrix to the identity matrix ( default zoom and scale )

◆ resized

void GraphicsWidget::resized	(	const int	,
		const int
	)

signal

◆ resizeEvent()

void GraphicsWidget::resizeEvent ( QResizeEvent * e )

protected

Repositions guides then emits resized() signal to MW and eventually Graph which does the node repositioning maintaining proportions.

Parameters

e

◆ rotateLeft

void GraphicsWidget::rotateLeft ( )

slot

GraphicsWidget::rotateLeft.

◆ rotateRight

void GraphicsWidget::rotateRight ( )

slot

GraphicsWidget::rotateRight.

◆ rotationChanged

void GraphicsWidget::rotationChanged ( const int )

signal

◆ selectAll()

void GraphicsWidget::selectAll ( )

Clears any clickedNode info and sets a selection rectangle in the scene, which signals QGraphicsScene::selectionChanged signal to update selectedNodes and selectedEdges. Called from MW.

◆ selectedEdges()

QList< SelectedEdge > GraphicsWidget::selectedEdges ( )

Returns a QList of selected directed edges structs in the form of v1,v2.

Returns: a QList of selected directed edges structs

◆ selectedItems()

QList< QGraphicsItem * > GraphicsWidget::selectedItems ( )

Returns a QList of all selected QGraphicsItem(s)

Returns: a QList of all selected QGraphicsItem(s)

◆ selectedNodes()

QList< int > GraphicsWidget::selectedNodes ( )

Returns a QList of selected node numbers Called by GW::getSelectedItems and MW::selectedNodes.

Returns: a QList of integers: the selected node numbers

◆ selectNone()

void GraphicsWidget::selectNone ( )

Clears any clickedNode info and any previous selection rect in the scene, which again signals selectionChanged() to update selectedNodes and selectedEdges to zero. Called from MW.

◆ setAllItemsVisibility()

void GraphicsWidget::setAllItemsVisibility	(	int	type,
		bool	visible
	)

Changes the visibility of all items of certain type (i.e. number, label, edge, etc)

Parameters

type
visible

◆ setCursor

void GraphicsWidget::setCursor ( Qt::CursorShape )

signal

◆ setEdgeArrowsVisibility

void GraphicsWidget::setEdgeArrowsVisibility ( const bool & toggle )

slot

Toggles the visibility of all edge arrows.

Parameters

toggle

◆ setEdgeClicked

void GraphicsWidget::setEdgeClicked	(	GraphicsEdge *	edge,
		const bool &	openMenu = `false`
	)

slot

Called when the user clicks on an edge. Emits the userClickedEdge signal to Graph which is used to:

display edge info on the status bar
notify context menus for the clicked edge.
Parameters

edge

◆ setEdgeColor

void GraphicsWidget::setEdgeColor	(	const int &	source,
		const int &	target,
		const QString &	color
	)

slot

Sets the color of an edge. Called from MW when the user changes the color of an edge (right-clicking). Also called from Graph when all edge colors need to be changed.

Parameters

source
target
color

◆ setEdgeDirectionType

bool GraphicsWidget::setEdgeDirectionType	(	const int &	source,
		const int &	target,
		const int &	dirType = `false`
	)

slot

Changes the direction type of an existing edge.

Parameters

source
target
directionType

Returns

◆ setEdgeHighlighting

void GraphicsWidget::setEdgeHighlighting ( const bool & toggle )

slot

Toggles edge highlighting when hovering over a single edge or all edges connected to a node when the user hovers over that node. Called from MW.

Parameters

numIn

◆ setEdgeLabel

void GraphicsWidget::setEdgeLabel	(	const int &	source,
		const int &	target,
		const QString &	label
	)

slot

Sets the label of an edge. Called from MW when the user changes the label of an edge (right-clicking).

Parameters

source
target
label

◆ setEdgeLabelsVisibility

void GraphicsWidget::setEdgeLabelsVisibility ( const bool & toggle )

slot

Toggles all edge labels visibility.

Parameters

toggle

◆ setEdgeOffsetFromNode

void GraphicsWidget::setEdgeOffsetFromNode	(	const int &	source,
		const int &	target,
		const int &	offset
	)

slot

Changes the offset of an edge (or all edges) from source and target nodes.

Parameters

source
target
offset

◆ setEdgeVisibility

void GraphicsWidget::setEdgeVisibility	(	const int &	relation,
		const int &	source,
		const int &	target,
		const bool &	visible
	)

slot

Changes the visibility of an edge.

Parameters

relation
source
target
toggle

◆ setEdgeWeight

bool GraphicsWidget::setEdgeWeight	(	const int &	source,
		const int &	target,
		const qreal &	weight
	)

slot

Sets the weight of an edge. Called from MW when the user changes the weight of an edge (right-clicking).

Parameters

source
target
weight

Returns

◆ setEdgeWeightNumbersVisibility

void GraphicsWidget::setEdgeWeightNumbersVisibility ( const bool & toggle )

slot

Toggles all edge weight numbers visibility.

Parameters

toggle

◆ setInitNodeSize()

void GraphicsWidget::setInitNodeSize ( int size )

Sets initial node size from MW. It is Called from MW on startup and when user changes it.

◆ setInitZoomIndex()

void GraphicsWidget::setInitZoomIndex ( int zoomIndex )

Passes initial zoom setting Called from MW on startup.

Parameters

zoomIndex

◆ setNodeClicked

void GraphicsWidget::setNodeClicked ( GraphicsNode * node )

slot

Called when the user clicks or double-clicks on a node. Clears clickedEdge and emits the userClickedNode signal to Graph to.

display node info on the status bar
notify context menus for the clicked node.
Parameters

node

◆ setNodeColor

bool GraphicsWidget::setNodeColor	(	const int &	nodeNumber,
		const QString &	color
	)

slot

Sets the color of an node. Called from MW when the user changes the color of a node (right-clicking).

Parameters

nodeNumber
color

Returns

◆ setNodeLabel

bool GraphicsWidget::setNodeLabel	(	const int &	nodeNumber,
		const QString &	label
	)

slot

Sets the label of an node. Called from MW.

Parameters

nodeNumber
label

Returns

◆ setNodeLabelColor

bool GraphicsWidget::setNodeLabelColor	(	const int &	number,
		const QString &	color = `"green"`
	)

slot

Changes the label color of a node to 'color'.

Parameters

number
color

◆ setNodeLabelDistance

bool GraphicsWidget::setNodeLabelDistance	(	const int &	number,
		const int &	distance = `0`
	)

slot

Changes the distance of a node label.

Parameters

number
distance

◆ setNodeLabelSize

bool GraphicsWidget::setNodeLabelSize	(	const int &	number,
		const int &	size = `0`
	)

slot

Changes the label size of a node to 'size'.

Parameters

number
size

◆ setNodeLabelsVisibility

void GraphicsWidget::setNodeLabelsVisibility ( const bool & toggle )

slot

GraphicsWidget::setNodeLabelsVisibility.

Parameters

toggle

◆ setNodeNumberColor

void GraphicsWidget::setNodeNumberColor	(	const int &	nodeNumber,
		const QString &	color
	)

slot

Changes the color of a node number.

Parameters

nodeNumber
color

◆ setNodeNumberDistance

bool GraphicsWidget::setNodeNumberDistance	(	const int &	number,
		const int &	distance = `0`
	)

slot

Changes the distance of the number of a node.

Parameters

number
distance

◆ setNodeNumberSize

bool GraphicsWidget::setNodeNumberSize	(	const int &	nodeNumber,
		const int &	size = `0`
	)

slot

Changes the size of the number of a node.

Parameters

number
size

◆ setNodeNumberVisibility

void GraphicsWidget::setNodeNumberVisibility ( const bool & toggle )

slot

Toggles the visibility of node numbers.

Parameters

toggle

◆ setNodeShape

bool GraphicsWidget::setNodeShape	(	const int &	nodeNumber,
		const QString &	shape,
		const QString &	iconPath = `QString()`
	)

slot

Sets the shape of an node. Called from MW when the user changes the shape of a node.

Parameters

nodeNumber
shape

Returns

◆ setNodeSize

bool GraphicsWidget::setNodeSize	(	const int &	number,
		const int &	size = `0`
	)

slot

Changes the size of a node.

Parameters

number
size

Returns

◆ setNodeSizeAll

void GraphicsWidget::setNodeSizeAll ( const int & size = 0 )

slot

Changes the size of all nodes.

Parameters

size

Returns

◆ setNodesMarked()

void GraphicsWidget::setNodesMarked ( QList< int > list )

Selects all nodes in list Called by Graph::signalNodesFound()

Parameters

list

◆ setNodeVisibility

void GraphicsWidget::setNodeVisibility	(	const int &	number,
		const bool &	toggle
	)

slot

Changes the visibility of a Node

◆ setNumbersInsideNodes()

void GraphicsWidget::setNumbersInsideNodes ( const bool & toggle )

Toggles node numbers displayed inside or out of nodes Called from MW.

Parameters

numIn

◆ setOptionsAntialiasing

void GraphicsWidget::setOptionsAntialiasing ( const bool & toggle )

slot

Toggles QPainter renderhints for primitive edges and text antialiasing.

Parameters

toggle

◆ setOptionsNoAntialiasingAutoAdjust

void GraphicsWidget::setOptionsNoAntialiasingAutoAdjust ( const bool & toggle )

slot

Toggles QGraphicsView's antialiasing auto-adjustment of exposed areas. Default: false Items that render antialiased lines on the boundaries of their QGraphicsItem::boundingRect() can end up rendering parts of the line outside. To prevent rendering artifacts, QGraphicsView expands all exposed regions by 2 pixels in all directions. If you enable this flag, QGraphicsView will no longer perform these adjustments, minimizing the areas that require redrawing, which improves performance. A common side effect is that items that do draw with antialiasing can leave painting traces behind on the scene as they are moved.

Parameters

toggle

◆ setOptionsOpenGL

void GraphicsWidget::setOptionsOpenGL ( const bool & enabled = false )

slot

◆ startEdge

void GraphicsWidget::startEdge ( GraphicsNode * node )

slot

Creates a new edge, when the user middle-clicks on two nodes consecutively On the first middle-click, it saves the first node (source). On the second middle-click, it saves the second node as target and emits the signal userMiddleClicked() to MW which will notify activeGraph, which in turn will signal back to drawEdge().

Parameters

node

◆ userClickedEdge

void GraphicsWidget::userClickedEdge	(	const int &	source,
		const int &	target,
		const bool &	openMenu = `false`
	)

signal

◆ userClickedNode

void GraphicsWidget::userClickedNode	(	const int &	nodeNumber,
		const QPointF &	p
	)

signal

◆ userClickOnEmptySpace

void GraphicsWidget::userClickOnEmptySpace ( const QPointF & p )

signal

◆ userDoubleClickNewNode

void GraphicsWidget::userDoubleClickNewNode ( const QPointF & )

signal

◆ userMiddleClicked

void GraphicsWidget::userMiddleClicked	(	const int &	,
		const int &
	)

signal

◆ userNodeMoved

void GraphicsWidget::userNodeMoved	(	const int &	,
		const int &	,
		const int &
	)

signal

◆ userSelectedItems

void GraphicsWidget::userSelectedItems	(	const QList< int >	selectedNodes,
		const QList< SelectedEdge >	selectedEdges
	)

signal

◆ wheelEvent()

void GraphicsWidget::wheelEvent ( QWheelEvent * e )

protected

Calls the scaleView() when the user spins the mouse wheel It passes delta as new m_scale

◆ zoomChanged

void GraphicsWidget::zoomChanged ( const int )

signal

◆ zoomIn

void GraphicsWidget::zoomIn ( int level = 1 )

slot

Called from MW (magnifier button and menu icon) to increase the zoom level of the scene. By default it increases zoom by 1.

Parameters

level

◆ zoomOut

void GraphicsWidget::zoomOut ( int level = 1 )

slot

Called from MW (magnifier button and menu icon) to decrease the zoom level of the scene. By default it decreases zoom by 1.

Parameters

level

Member Data Documentation

◆ clickedEdge

GraphicsEdge* GraphicsWidget::clickedEdge

private

◆ clickedEdgeExists

bool GraphicsWidget::clickedEdgeExists

private

◆ edgeName

QString GraphicsWidget::edgeName

private

◆ edgesHash

H_StrToEdge GraphicsWidget::edgesHash

private

◆ factor

qreal GraphicsWidget::factor

private

◆ firstNode

GraphicsNode* GraphicsWidget::firstNode

private

◆ fX

qreal GraphicsWidget::fX

private

◆ fY

qreal GraphicsWidget::fY

private

◆ m_curRelation

int GraphicsWidget::m_curRelation

private

◆ m_currentRotationAngle

int GraphicsWidget::m_currentRotationAngle

private

◆ m_currentScaleFactor

double GraphicsWidget::m_currentScaleFactor

private

◆ m_edgeHighlighting

bool GraphicsWidget::m_edgeHighlighting

private

◆ m_edgeMinOffsetFromNode

int GraphicsWidget::m_edgeMinOffsetFromNode

private

◆ m_isTransformationActive

bool GraphicsWidget::m_isTransformationActive

private

◆ m_labelColor

QString GraphicsWidget::m_labelColor

private

◆ m_nodeLabel

QString GraphicsWidget::m_nodeLabel

private

◆ m_nodeLabelVisibility

bool GraphicsWidget::m_nodeLabelVisibility

private

◆ m_nodeNumbersInside

bool GraphicsWidget::m_nodeNumbersInside

private

◆ m_nodeNumberVisibility

bool GraphicsWidget::m_nodeNumberVisibility

private

◆ m_nodeSize

int GraphicsWidget::m_nodeSize

private

◆ m_numberColor

QString GraphicsWidget::m_numberColor

private

◆ m_selectedEdges

QList<SelectedEdge> GraphicsWidget::m_selectedEdges

private

◆ m_selectedNodes

QList<int> GraphicsWidget::m_selectedNodes

private

◆ m_zoomIndex

int GraphicsWidget::m_zoomIndex

private

◆ markedEdgeSource

GraphicsNode* GraphicsWidget::markedEdgeSource

private

◆ markedEdgeSourceOrigSize

int GraphicsWidget::markedEdgeSourceOrigSize

private

◆ markedEdgeTarget

GraphicsNode* GraphicsWidget::markedEdgeTarget

private

◆ markedEdgeTargetOrigSize

int GraphicsWidget::markedEdgeTargetOrigSize

private

◆ nodeHash

H_NumToNode GraphicsWidget::nodeHash

private

◆ secondDoubleClick

bool GraphicsWidget::secondDoubleClick

private

◆ secondNode

GraphicsNode * GraphicsWidget::secondNode

private

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

app/src/graphicswidget.h
app/src/graphicswidget.cpp

Public Slots

Signals

Public Member Functions

Protected Member Functions

Private Attributes

Constructor & Destructor Documentation

◆ GraphicsWidget()

◆ ~GraphicsWidget()

Member Function Documentation

◆ addGuideCircle

◆ addGuideHLine

◆ changeMatrixRotation

◆ changeMatrixScale

◆ clear()

◆ clearGuides

◆ createEdgeName()

◆ drawEdge

◆ drawNode

◆ getSelectedItems

◆ hasNode()

◆ mouseDoubleClickEvent()

◆ mousePressEvent()

◆ mouseReleaseEvent()

◆ moveNode

◆ openContextMenu

◆ openNodeMenu

◆ relationSet

◆ removeAllItems()

◆ removeEdge

◆ removeItem() [1/6]

◆ removeItem() [2/6]

◆ removeItem() [3/6]

◆ removeItem() [4/6]

◆ removeItem() [5/6]

◆ removeItem() [6/6]

◆ removeNode

◆ reset

◆ resized

◆ resizeEvent()

◆ rotateLeft

◆ rotateRight

◆ rotationChanged

◆ selectAll()

◆ selectedEdges()

◆ selectedItems()

◆ selectedNodes()

◆ selectNone()

◆ setAllItemsVisibility()

◆ setCursor

◆ setEdgeArrowsVisibility

◆ setEdgeClicked

◆ setEdgeColor

◆ setEdgeDirectionType

◆ setEdgeHighlighting

◆ setEdgeLabel

◆ setEdgeLabelsVisibility

◆ setEdgeOffsetFromNode

◆ setEdgeVisibility

◆ setEdgeWeight

◆ setEdgeWeightNumbersVisibility

◆ setInitNodeSize()

◆ setInitZoomIndex()

◆ setNodeClicked

◆ setNodeColor

◆ setNodeLabel

◆ setNodeLabelColor

◆ setNodeLabelDistance

◆ setNodeLabelSize

◆ setNodeLabelsVisibility

◆ setNodeNumberColor

◆ setNodeNumberDistance

◆ setNodeNumberSize

◆ setNodeNumberVisibility

◆ setNodeShape

◆ setNodeSize

◆ setNodeSizeAll

◆ setNodesMarked()

◆ setNodeVisibility

◆ setNumbersInsideNodes()

◆ setOptionsAntialiasing