Slider Class Reference

#include <Slider.h>

Inherits QObject, and QGraphicsPixmapItem.

Inherited by BoundarySlider, and IndexSlider.

Signals
void	sliderMoved (Slider *slider, int idx)
void	sliderClicked (Slider *slider)
void	sliderReleased (Slider *slider, int idx)

Public Member Functions
	Slider ()
	Slider (QGraphicsItem *parent, unsigned initIdx)
unsigned	getInitIdx ()
unsigned	getLastIndex ()
void	setLastIndex (unsigned index)
QPointF	boundarySnapPos (QPointF eventPos, qreal clickPosOffsetX, qreal leftBoundary, qreal rightBoundary)
qreal	getClickPosOffsetX (QGraphicsSceneMouseEvent *event)
virtual int	height () const
virtual int	width () const

Protected Member Functions
void	mousePressEvent (QGraphicsSceneMouseEvent *event)
void	mouseMoveEvent (QGraphicsSceneMouseEvent *event)
void	mouseReleaseEvent (QGraphicsSceneMouseEvent *event)

Protected Attributes
unsigned	initIdx
unsigned	lastIndex

Detailed Description

Definition at line 7 of file Slider.h.

Constructor & Destructor Documentation

Slider() [1/2]

Slider::Slider

(

)

Definition at line 5 of file Slider.cc.

               {

}

Slider() [2/2]

Slider::Slider	(	QGraphicsItem *	parent,
		unsigned	initIdx
	)

Definition at line 9 of file Slider.cc.

                                                      {
    setParentItem(parent);
    this->initIdx = initIdx; 
}

Member Function Documentation

boundarySnapPos()

QPointF Slider::boundarySnapPos	(	QPointF	eventPos,
		qreal	clickPosOffsetX,
		qreal	leftBoundary,
		qreal	rightBoundary
	)

Definition at line 18 of file Slider.cc.

                                                                                                                {
    
    QPointF newPos;

    // Restricting the sliding area. The left and right boundaries of the slider bar
    // cannot be surpassed.
    if(mapToParent(eventPos).x() - clickPosOffsetX < leftBoundary) {
        // Stepped over left boundary.
        newPos = QPointF(leftBoundary, pos().y());
    } else if (mapToParent(eventPos).x() - clickPosOffsetX > rightBoundary) {
        // Stepped over right boundary.
        newPos = QPointF(rightBoundary, pos().y());
    } else {
        // Slider position is within boundaries.
        newPos = QPointF(mapToParent(eventPos).x() - clickPosOffsetX /*- getPointingOffset()*/,
               pos().y() );
    }
    return newPos;
}

getClickPosOffsetX()

qreal Slider::getClickPosOffsetX

(

QGraphicsSceneMouseEvent *

event

)

Definition at line 38 of file Slider.cc.

                                                                {
    // Offset of clicked x coordinate of time marker item w.r.t. item origin.x
    return mapToParent(event->buttonDownPos((Qt::LeftButton))).x() - pos().x(); 
}

getInitIdx()

unsigned Slider::getInitIdx

(

)

Definition at line 14 of file Slider.cc.

                            {
    return initIdx;
}

getLastIndex()

unsigned Slider::getLastIndex

(

)

Definition at line 51 of file Slider.cc.

                              {
    return lastIndex;
}

height()

int Slider::height ( ) const

virtual

Definition at line 43 of file Slider.cc.

                         {
    return pixmap().height();
}

mouseMoveEvent()

void Slider::mouseMoveEvent ( QGraphicsSceneMouseEvent *  event )

protected

Definition at line 66 of file Slider.cc.

                                                           {
    /* Sliding bounds in parent's coords */
    qreal leftBoundary = parentItem()->boundingRect().left();
    qreal rightBoundary = parentItem()->boundingRect().right();

    QPointF newPos = boundarySnapPos(event->pos(), getClickPosOffsetX(event), leftBoundary, rightBoundary);
    setPos(newPos);
    
    unsigned index = ((SlideBarItem*)parentItem())->markerIndex(this);

    setLastIndex(index);
    
//    std::cout << "Logical marker position: " << index << std::endl;
//    std::cout << "Computed real position for that index: " << ((SlideBarItem*)parentItem())->markerPositionForIndex(index) << std::endl;
    update();
}

mousePressEvent()

void Slider::mousePressEvent ( QGraphicsSceneMouseEvent *  event )

protected

Definition at line 61 of file Slider.cc.

{
    sliderClicked(this);
}

mouseReleaseEvent()

void Slider::mouseReleaseEvent ( QGraphicsSceneMouseEvent *  event )

protected

Definition at line 83 of file Slider.cc.

                                                              {
    emit sliderReleased(this, getLastIndex());
}

setLastIndex()

void Slider::setLastIndex

(

unsigned

index

)

Definition at line 55 of file Slider.cc.

                                        {
    if(index != lastIndex)
        emit sliderMoved(this, index);
    this->lastIndex = index;
}

sliderClicked

void Slider::sliderClicked ( Slider *  slider )

signal

sliderMoved

void Slider::sliderMoved ( Slider *  slider, int  idx  )

signal

sliderReleased

void Slider::sliderReleased ( Slider *  slider, int  idx  )

signal

width()

int Slider::width ( ) const

virtual

Definition at line 47 of file Slider.cc.

                        {
    return pixmap().width();
}

Member Data Documentation

initIdx

unsigned Slider::initIdx

protected

Definition at line 34 of file Slider.h.

lastIndex

unsigned Slider::lastIndex

protected

Definition at line 35 of file Slider.h.

---

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

• /build/rock-master-18.09-gui-rock-widget-collection-0.20180124/src/timeline/Slider.h
• /build/rock-master-18.09-gui-rock-widget-collection-0.20180124/src/timeline/Slider.cc