SegmentLine Class Reference

This class is a special case of the standard QGraphicsLineItem for segments. More...

#include <SegmentLine.h>

Inheritance diagram for SegmentLine:

Collaboration diagram for SegmentLine:

Signals
void	signalHover (bool)
	Pass hover enter/leave events to Segment that owns this. More...

Public Member Functions
	SegmentLine (QGraphicsScene &scene, const DocumentModelSegments &modelSegments, Segment *segment)
	Single constructor. More...
	~SegmentLine ()
virtual void	hoverEnterEvent (QGraphicsSceneHoverEvent *event)
	Highlight this and all other SegmentLines belonging to the same Segment upon hover enter. More...
virtual void	hoverLeaveEvent (QGraphicsSceneHoverEvent *event)
	Unset highlighting triggered by hover enter. More...
virtual void	mousePressEvent (QGraphicsSceneMouseEvent *event)
	Create points along this curve. More...
Segment *	segment () const
	Segment that owns this line. More...
void	setHover (bool hover)
	Apply/remove highlighting triggered by hover enter/leave. More...
void	updateModelSegment (const DocumentModelSegments &modelSegments)
	Update this segment line with new settings. More...

Detailed Description

This class is a special case of the standard QGraphicsLineItem for segments.

Definition at line 17 of file SegmentLine.h.

Constructor & Destructor Documentation

SegmentLine()

SegmentLine::SegmentLine	(	QGraphicsScene &	scene,
		const DocumentModelSegments &	modelSegments,
		Segment *	segment
	)

Single constructor.

Definition at line 17 of file SegmentLine.cpp.

                                           :
  m_modelSegments (modelSegments),
  m_segment (segment)
{
  LOG4CPP_DEBUG_S ((*mainCat)) << "SegmentLine::SegmentLine"
                               << " address=0x" << std::hex << static_cast<void *> (this);

  setData (DATA_KEY_GRAPHICS_ITEM_TYPE, QVariant (GRAPHICS_ITEM_TYPE_SEGMENT));

  // Make this transparent now, but always visible so hover events work
  scene.addItem (this);
  setPen (QPen (Qt::transparent));
  setZValue (Z_VALUE_CURVE);
  setVisible (true);
  setAcceptHoverEvents (true);
  setHover (false); // Initially the cursor is not hovering over this object. Later a hover event will change this state
  setFlags (QGraphicsItem::ItemIsFocusable);

  connect (this, SIGNAL (signalHover (bool)), segment, SLOT (slotHover (bool)));
}

~SegmentLine()

SegmentLine::~SegmentLine

(

)

Definition at line 40 of file SegmentLine.cpp.

{
  LOG4CPP_DEBUG_S ((*mainCat)) << "SegmentLine::~SegmentLine"
                               << " address=0x" << std::hex << static_cast<void *> (this);
}

Member Function Documentation

hoverEnterEvent()

void SegmentLine::hoverEnterEvent ( QGraphicsSceneHoverEvent *  event )

virtual

Highlight this and all other SegmentLines belonging to the same Segment upon hover enter.

Definition at line 46 of file SegmentLine.cpp.

{
  LOG4CPP_INFO_S ((*mainCat)) << "SegmentLine::hoverEnterEvent";

  emit (signalHover (true));
}

hoverLeaveEvent()

void SegmentLine::hoverLeaveEvent ( QGraphicsSceneHoverEvent *  event )

virtual

Unset highlighting triggered by hover enter.

Definition at line 53 of file SegmentLine.cpp.

{
  LOG4CPP_INFO_S ((*mainCat)) << "SegmentLine::hoverLeaveEvent";

  emit (signalHover (false));
}

mousePressEvent()

void SegmentLine::mousePressEvent ( QGraphicsSceneMouseEvent *  event )

virtual

Create points along this curve.

Definition at line 60 of file SegmentLine.cpp.

{
  LOG4CPP_INFO_S ((*mainCat)) << "SegmentLine::mousePressEvent";

  m_segment->forwardMousePress();
}

segment()

Segment * SegmentLine::segment

(

)

const

Segment that owns this line.

Definition at line 67 of file SegmentLine.cpp.

{
  return m_segment;
}

setHover()

void SegmentLine::setHover

(

bool

hover

)

Apply/remove highlighting triggered by hover enter/leave.

Definition at line 72 of file SegmentLine.cpp.

{
  if (hover) {

    QColor color (ColorPaletteToQColor (m_modelSegments.lineColor()));

    setPen (QPen (QBrush (color),
                  m_modelSegments.lineWidth()));

  } else {

    setPen (QPen (Qt::transparent));

  }
}

signalHover

void SegmentLine::signalHover ( bool  )

signal

Pass hover enter/leave events to Segment that owns this.

updateModelSegment()

void SegmentLine::updateModelSegment

(

const DocumentModelSegments &

modelSegments

)

Update this segment line with new settings.

Definition at line 88 of file SegmentLine.cpp.

{
  LOG4CPP_INFO_S ((*mainCat)) << "SegmentLine::updateModelSegment";

  m_modelSegments = modelSegments;
}

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

• Segment/SegmentLine.h
• Segment/SegmentLine.cpp