PolygonView Class Reference

This is a View of polygon mask (represented by PolygonItem) on GraphicsScene. More...

Inheritance diagram for PolygonView:

Collaboration diagram for PolygonView:

Public Slots
bool	closePolygonIfNecessary ()
	Returns true if there was a request to close polygon (emitted by its start point), and then closes a polygon. More...
void	onClosePolygonRequest (bool value)

Public Member Functions
	PolygonView ()
void	addView (IShape2DView *childView, int row)
QRectF	boundingRect () const
bool	isClosedPolygon ()
QPointF	lastAddedPoint () const
	returns last added poligon point in scene coordinates More...
virtual SessionItem *	parameterizedItem ()
virtual void	setParameterizedItem (SessionItem *item)
void	setSceneAdaptor (const ISceneAdaptor *adaptor)
int	type () const

Protected Slots
virtual void	onChangedX ()
virtual void	onChangedY ()
virtual void	onPropertyChange (const QString &)
void	update_view ()

Protected Member Functions
bool	blockOnProperty () const
qreal	fromSceneX (qreal value) const
	convert scene coordinates to ColorMap plot coordinates More...
qreal	fromSceneY (qreal value) const
QVariant	itemChange (GraphicsItemChange change, const QVariant &value)
void	mouseMoveEvent (QGraphicsSceneMouseEvent *event)
void	paint (QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
double	par (const QString &property_name) const
void	setBlockOnProperty (bool value)
qreal	toSceneX (const QString &property_name) const
qreal	toSceneX (qreal value) const
qreal	toSceneY (const QString &property_name) const
qreal	toSceneY (qreal value) const

Protected Attributes
const ISceneAdaptor *	m_adaptor
bool	m_block_on_property_change
QRectF	m_bounding_rect
SessionItem *	m_item

Private Member Functions
bool	makePolygonClosed ()
void	onItemPropertyChange (const QString &propertyName)
void	setChildrenVisible (bool value)
void	update_points ()
	When polygon moves as a whole thing across the scene, given method updates coordinates of PolygonPointItem's. More...
void	update_polygon ()
	Runs through all PolygonPointItem and calculate bounding rectangle. More...

Private Attributes
bool	m_block_on_point_update
bool	m_close_polygon_request
QPolygonF	m_polygon

Detailed Description

This is a View of polygon mask (represented by PolygonItem) on GraphicsScene.

Definition at line 23 of file PolygonView.h.

Constructor & Destructor Documentation

PolygonView()

PolygonView::PolygonView

(

)

Definition at line 25 of file PolygonView.cpp.

                         : m_block_on_point_update(false), m_close_polygon_request(false)
{
    setFlag(QGraphicsItem::ItemIsSelectable);
    setFlag(QGraphicsItem::ItemIsMovable);
    setFlag(QGraphicsItem::ItemSendsGeometryChanges);
}

Member Function Documentation

addView()

void PolygonView::addView ( IShape2DView *  childView, int  row  )

virtual

Reimplemented from IShape2DView.

Definition at line 32 of file PolygonView.cpp.

{
    Q_UNUSED(row);
 
    if (childItems().contains(childView))
        return;
 
    PolygonPointView* pointView = dynamic_cast<PolygonPointView*>(childView);
    ASSERT(pointView);
    pointView->setParentItem(this);
 
    // polygon consisting from more than 2 points can be closed via hover event by clicking
    // on first polygon point
    if (!isClosedPolygon() && childItems().size() > 2)
        childItems()[0]->setAcceptHoverEvents(true);
 
    pointView->setVisible(true);
    update_polygon();
 
    connect(pointView, &PolygonPointView::propertyChanged, this, &PolygonView::update_view);
    connect(pointView, &PolygonPointView::closePolygonRequest, this,
            &PolygonView::onClosePolygonRequest);
}

References ASSERT, PolygonPointView::closePolygonRequest(), isClosedPolygon(), onClosePolygonRequest(), PolygonPointView::propertyChanged(), update_polygon(), and update_view().

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blockOnProperty()

bool IShape2DView::blockOnProperty ( ) const

protectedinherited

Definition at line 127 of file IShape2DView.cpp.

{
    return m_block_on_property_change;
}

References IShape2DView::m_block_on_property_change.

boundingRect()

QRectF IShape2DView::boundingRect ( ) const

inherited

Definition at line 36 of file IShape2DView.cpp.

{
    return m_bounding_rect;
}

References IShape2DView::m_bounding_rect.

closePolygonIfNecessary

bool PolygonView::closePolygonIfNecessary ( )

slot

Returns true if there was a request to close polygon (emitted by its start point), and then closes a polygon.

Returns true if polygon was closed.

Definition at line 64 of file PolygonView.cpp.

{
    if (m_close_polygon_request) {
        for (QGraphicsItem* childItem : childItems()) {
            childItem->setFlag(QGraphicsItem::ItemIsMovable);
            childItem->setFlag(QGraphicsItem::ItemSendsGeometryChanges);
            childItem->setAcceptHoverEvents(false);
            childItem->setCursor(Qt::SizeAllCursor);
        }
        m_item->setItemValue(PolygonItem::P_ISCLOSED, true);
        update();
    }
    return isClosedPolygon();
}

References isClosedPolygon(), m_close_polygon_request, IShape2DView::m_item, PolygonItem::P_ISCLOSED, and SessionItem::setItemValue().

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fromSceneX()

qreal IShape2DView::fromSceneX ( qreal  value ) const

protectedinherited

convert scene coordinates to ColorMap plot coordinates

Definition at line 106 of file IShape2DView.cpp.

{
    return m_adaptor ? m_adaptor->fromSceneX(value) : value;
}

References ISceneAdaptor::fromSceneX(), and IShape2DView::m_adaptor.

Referenced by EllipseView::mouseMoveEvent(), RectangleView::mouseMoveEvent(), EllipseView::onChangedX(), VerticalLineView::onChangedX(), RectangleView::onChangedX(), and PolygonPointView::updateParameterizedItem().

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fromSceneY()

qreal IShape2DView::fromSceneY ( qreal  value ) const

protectedinherited

Definition at line 111 of file IShape2DView.cpp.

{
    return m_adaptor ? m_adaptor->fromSceneY(value) : value;
}

References ISceneAdaptor::fromSceneY(), and IShape2DView::m_adaptor.

Referenced by EllipseView::mouseMoveEvent(), RectangleView::mouseMoveEvent(), EllipseView::onChangedY(), HorizontalLineView::onChangedY(), RectangleView::onChangedY(), and PolygonPointView::updateParameterizedItem().

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isClosedPolygon()

bool PolygonView::isClosedPolygon

(

)

Definition at line 84 of file PolygonView.cpp.

{
    return m_item->getItemValue(PolygonItem::P_ISCLOSED).toBool();
}

References SessionItem::getItemValue(), IShape2DView::m_item, and PolygonItem::P_ISCLOSED.

Referenced by addView(), closePolygonIfNecessary(), and paint().

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itemChange()

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

protected

Definition at line 106 of file PolygonView.cpp.

{
    if (change == QGraphicsItem::ItemSelectedHasChanged)
        setChildrenVisible(this->isSelected());
 
    return value;
}

References setChildrenVisible().

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lastAddedPoint()

QPointF PolygonView::lastAddedPoint

(

)

const

returns last added poligon point in scene coordinates

Definition at line 57 of file PolygonView.cpp.

{
    return childItems().size() ? childItems().back()->scenePos() : QPointF();
}

makePolygonClosed()

bool PolygonView::makePolygonClosed ( )

private

mouseMoveEvent()

void PolygonView::mouseMoveEvent ( QGraphicsSceneMouseEvent *  event )

protected

Definition at line 114 of file PolygonView.cpp.

{
    IShape2DView::mouseMoveEvent(event);
    update_points();
}

References update_points().

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onChangedX

virtual void IShape2DView::onChangedX ( )

inlineprotectedvirtualslotinherited

Definition at line 48 of file IShape2DView.h.

{}

Referenced by IShape2DView::IShape2DView().

onChangedY

virtual void IShape2DView::onChangedY ( )

inlineprotectedvirtualslotinherited

Definition at line 49 of file IShape2DView.h.

{}

Referenced by IShape2DView::IShape2DView().

onClosePolygonRequest

void PolygonView::onClosePolygonRequest ( bool  value )

slot

Definition at line 79 of file PolygonView.cpp.

{
    m_close_polygon_request = value;
}

References m_close_polygon_request.

Referenced by addView().

onItemPropertyChange()

void IShape2DView::onItemPropertyChange ( const QString &  propertyName )

privateinherited

Definition at line 132 of file IShape2DView.cpp.

{
    if (m_block_on_property_change)
        return;
 
    m_block_on_property_change = true;
 
    bool schedule_update = false;
    if (propertyName == MaskItem::P_MASK_VALUE) {
        schedule_update = true;
    } else if (propertyName == MaskItem::P_IS_VISIBLE) {
        this->setVisible(parameterizedItem()->getItemValue(MaskItem::P_IS_VISIBLE).toBool());
        schedule_update = true;
    }
 
    onPropertyChange(propertyName);
 
    if (schedule_update)
        update();
 
    m_block_on_property_change = false;
}

References IShape2DView::m_block_on_property_change, IShape2DView::onPropertyChange(), MaskItem::P_IS_VISIBLE, MaskItem::P_MASK_VALUE, and IShape2DView::parameterizedItem().

Referenced by IShape2DView::setParameterizedItem().

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onPropertyChange

virtual void IShape2DView::onPropertyChange ( const QString &  )

inlineprotectedvirtualslotinherited

Definition at line 50 of file IShape2DView.h.

{}

Referenced by IShape2DView::onItemPropertyChange().

paint()

void PolygonView::paint ( QPainter *  painter, const QStyleOptionGraphicsItem *  , QWidget *    )

protected

Definition at line 89 of file PolygonView.cpp.

{
    ASSERT(m_item);
    painter->setRenderHints(QPainter::Antialiasing);
 
    bool mask_value = m_item->getItemValue(MaskItem::P_MASK_VALUE).toBool();
    painter->setBrush(MaskEditorHelper::getMaskBrush(mask_value));
    painter->setPen(MaskEditorHelper::getMaskPen(mask_value));
 
    // painter->drawRect(m_bounding_rect);
 
    painter->drawPolyline(m_polygon.toPolygon());
 
    if (isClosedPolygon())
        painter->drawPolygon(m_polygon.toPolygon());
}

References ASSERT, SessionItem::getItemValue(), MaskEditorHelper::getMaskBrush(), MaskEditorHelper::getMaskPen(), isClosedPolygon(), IShape2DView::m_item, m_polygon, and MaskItem::P_MASK_VALUE.

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par()

double IShape2DView::par ( const QString &  property_name ) const

protectedinherited

Definition at line 81 of file IShape2DView.cpp.

{
    return m_item->getItemValue(property_name).toReal();
}

References SessionItem::getItemValue(), and IShape2DView::m_item.

Referenced by EllipseView::bottom(), RectangleView::bottom(), EllipseView::left(), RectangleView::left(), EllipseView::onPropertyChange(), EllipseView::right(), RectangleView::right(), EllipseView::top(), RectangleView::top(), and EllipseView::update_position().

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parameterizedItem()

SessionItem * IShape2DView::parameterizedItem ( )

virtualinherited

Definition at line 61 of file IShape2DView.cpp.

{
    return m_item;
}

References IShape2DView::m_item.

Referenced by IShape2DView::onItemPropertyChange().

setBlockOnProperty()

void IShape2DView::setBlockOnProperty ( bool  value )

protectedinherited

Definition at line 122 of file IShape2DView.cpp.

{
    m_block_on_property_change = value;
}

References IShape2DView::m_block_on_property_change.

Referenced by EllipseView::onChangedX(), VerticalLineView::onChangedX(), RectangleView::onChangedX(), EllipseView::onChangedY(), HorizontalLineView::onChangedY(), and RectangleView::onChangedY().

setChildrenVisible()

void PolygonView::setChildrenVisible ( bool  value )

private

Definition at line 184 of file PolygonView.cpp.

{
    for (QGraphicsItem* childItem : childItems())
        childItem->setVisible(value);
}

Referenced by itemChange().

setParameterizedItem()

void IShape2DView::setParameterizedItem ( SessionItem *  item )

virtualinherited

Definition at line 41 of file IShape2DView.cpp.

{
    if (m_item == item) {
        return;
 
    } else {
        if (m_item)
            m_item->mapper()->unsubscribe(this);
 
        m_item = item;
        if (!m_item)
            return;
 
        m_item->mapper()->setOnPropertyChange(
            [this](const QString& name) { onItemPropertyChange(name); }, this);
 
        m_item->mapper()->setOnItemDestroy([this](SessionItem*) { m_item = 0; }, this);
    }
}

References IShape2DView::m_item, SessionItem::mapper(), RealSpace::Particles::name(), IShape2DView::onItemPropertyChange(), ModelMapper::setOnItemDestroy(), ModelMapper::setOnPropertyChange(), and ModelMapper::unsubscribe().

Referenced by MaskViewFactory::createMaskView().

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setSceneAdaptor()

void IShape2DView::setSceneAdaptor ( const ISceneAdaptor *  adaptor )

inherited

Definition at line 66 of file IShape2DView.cpp.

{
    ASSERT(adaptor);
 
    if (m_adaptor != adaptor) {
        if (m_adaptor)
            disconnect(m_adaptor, &ISceneAdaptor::update_request, this, &IShape2DView::update_view);
 
        m_adaptor = adaptor;
        connect(m_adaptor, &ISceneAdaptor::update_request, this, &IShape2DView::update_view,
                Qt::UniqueConnection);
        update_view();
    }
}

References ASSERT, IShape2DView::m_adaptor, ISceneAdaptor::update_request(), and IShape2DView::update_view().

Referenced by MaskViewFactory::createMaskView().

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toSceneX() [1/2]

qreal IShape2DView::toSceneX ( const QString &  property_name ) const

protectedinherited

Definition at line 86 of file IShape2DView.cpp.

{
    return toSceneX(m_item->getItemValue(property_name).toReal());
}

References SessionItem::getItemValue(), and IShape2DView::m_item.

Referenced by EllipseView::left(), RectangleView::left(), EllipseView::onPropertyChange(), VerticalLineView::onPropertyChange(), EllipseView::right(), RectangleView::right(), update_polygon(), EllipseView::update_position(), RectangleView::update_position(), and VerticalLineView::update_view().

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toSceneX() [2/2]

qreal IShape2DView::toSceneX ( qreal  value ) const

protectedinherited

Definition at line 91 of file IShape2DView.cpp.

{
    return m_adaptor ? m_adaptor->toSceneX(value) : value;
}

References IShape2DView::m_adaptor, and ISceneAdaptor::toSceneX().

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toSceneY() [1/2]

qreal IShape2DView::toSceneY ( const QString &  property_name ) const

protectedinherited

Definition at line 96 of file IShape2DView.cpp.

{
    return toSceneY(m_item->getItemValue(property_name).toReal());
}

References SessionItem::getItemValue(), and IShape2DView::m_item.

Referenced by EllipseView::bottom(), RectangleView::bottom(), EllipseView::onPropertyChange(), HorizontalLineView::onPropertyChange(), EllipseView::top(), RectangleView::top(), update_polygon(), EllipseView::update_position(), RectangleView::update_position(), and HorizontalLineView::update_view().

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toSceneY() [2/2]

qreal IShape2DView::toSceneY ( qreal  value ) const

protectedinherited

Definition at line 101 of file IShape2DView.cpp.

{
    return m_adaptor ? m_adaptor->toSceneY(value) : value;
}

References IShape2DView::m_adaptor, and ISceneAdaptor::toSceneY().

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type()

int PolygonView::type ( ) const

inlinevirtual

Reimplemented from IShape2DView.

Definition at line 27 of file PolygonView.h.

{ return MaskEditorHelper::POLYGON; }

References MaskEditorHelper::POLYGON.

update_points()

void PolygonView::update_points ( )

private

When polygon moves as a whole thing across the scene, given method updates coordinates of PolygonPointItem's.

Definition at line 170 of file PolygonView.cpp.

{
    if (m_block_on_point_update)
        return;
 
    for (QGraphicsItem* childItem : childItems()) {
        PolygonPointView* view = dynamic_cast<PolygonPointView*>(childItem);
        QPointF pos = view->scenePos();
        disconnect(view, &PolygonPointView::propertyChanged, this, &PolygonView::update_view);
        view->updateParameterizedItem(pos);
        connect(view, &PolygonPointView::propertyChanged, this, &PolygonView::update_view);
    }
}

References m_block_on_point_update, PolygonPointView::propertyChanged(), update_view(), and PolygonPointView::updateParameterizedItem().

Referenced by mouseMoveEvent().

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update_polygon()

void PolygonView::update_polygon ( )

private

Runs through all PolygonPointItem and calculate bounding rectangle.

Determines position of the rectangle in scene. Calculates position of PolygonPointView in local polygon coordinates

Definition at line 129 of file PolygonView.cpp.

{
    if (m_block_on_point_update)
        return;
 
    m_block_on_point_update = true;
 
    if (m_item->numberOfChildren()) {
 
        m_polygon.clear();
 
        for (SessionItem* item : m_item->getChildrenOfType("PolygonPoint")) {
            qreal px = toSceneX(item->getItemValue(PolygonPointItem::P_POSX).toReal());
            qreal py = toSceneY(item->getItemValue(PolygonPointItem::P_POSY).toReal());
            m_polygon << QPointF(px, py);
        }
        QRectF scene_rect = m_polygon.boundingRect().marginsAdded(
            QMarginsF(bbox_margins, bbox_margins, bbox_margins, bbox_margins));
 
        m_bounding_rect = QRectF(0.0, 0.0, scene_rect.width(), scene_rect.height());
 
        setPos(scene_rect.x(), scene_rect.y());
        update(); // to propagate changes to scene
 
        m_polygon = mapFromScene(m_polygon);
 
        //        for (int i = 0; i < childItems().size(); ++i) {
        //            QGraphicsItem* childView = childItems()[i];
        //            childView->setPos(m_polygon[i]);
        //        }
        int index(0);
        for (auto childView : childItems())
            childView->setPos(m_polygon[index++]);
 
        setPos(scene_rect.x(), scene_rect.y());
    }
    m_block_on_point_update = false;
}

References SessionItem::getChildrenOfType(), m_block_on_point_update, IShape2DView::m_bounding_rect, IShape2DView::m_item, m_polygon, SessionItem::numberOfChildren(), PolygonPointItem::P_POSX, PolygonPointItem::P_POSY, IShape2DView::toSceneX(), and IShape2DView::toSceneY().

Referenced by addView(), and update_view().

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update_view

void PolygonView::update_view ( )

protectedslot

Definition at line 120 of file PolygonView.cpp.

{
    update_polygon();
    update();
}

References update_polygon().

Referenced by addView(), and update_points().

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Member Data Documentation

m_adaptor

const ISceneAdaptor* IShape2DView::m_adaptor

protectedinherited

Definition at line 66 of file IShape2DView.h.

Referenced by IShape2DView::fromSceneX(), IShape2DView::fromSceneY(), IShape2DView::setSceneAdaptor(), IShape2DView::toSceneX(), IShape2DView::toSceneY(), IntensityDataView::update_view(), VerticalLineView::update_view(), HorizontalLineView::update_view(), MaskAllView::update_view(), and MaskContainerView::update_view().

m_block_on_point_update

bool PolygonView::m_block_on_point_update

private

Definition at line 54 of file PolygonView.h.

Referenced by update_points(), and update_polygon().

m_block_on_property_change

bool IShape2DView::m_block_on_property_change

protectedinherited

Definition at line 68 of file IShape2DView.h.

Referenced by IShape2DView::blockOnProperty(), IShape2DView::onItemPropertyChange(), and IShape2DView::setBlockOnProperty().

m_bounding_rect

QRectF IShape2DView::m_bounding_rect

protectedinherited

Definition at line 67 of file IShape2DView.h.

Referenced by IShape2DView::boundingRect(), VerticalLineView::paint(), HorizontalLineView::paint(), MaskAllView::paint(), RectangleBaseView::update_bounding_rect(), update_polygon(), IntensityDataView::update_view(), VerticalLineView::update_view(), HorizontalLineView::update_view(), MaskAllView::update_view(), and MaskContainerView::update_view().

m_close_polygon_request

bool PolygonView::m_close_polygon_request

private

Definition at line 55 of file PolygonView.h.

Referenced by closePolygonIfNecessary(), and onClosePolygonRequest().

m_item

SessionItem* IShape2DView::m_item

protectedinherited

Definition at line 65 of file IShape2DView.h.

Referenced by IShape2DView::~IShape2DView(), closePolygonIfNecessary(), isClosedPolygon(), EllipseView::mouseMoveEvent(), RectangleView::mouseMoveEvent(), EllipseView::onChangedX(), VerticalLineView::onChangedX(), RectangleView::onChangedX(), EllipseView::onChangedY(), HorizontalLineView::onChangedY(), RectangleView::onChangedY(), EllipseView::paint(), VerticalLineView::paint(), HorizontalLineView::paint(), paint(), RectangleView::paint(), IShape2DView::par(), IShape2DView::parameterizedItem(), IShape2DView::setParameterizedItem(), IShape2DView::toSceneX(), IShape2DView::toSceneY(), RectangleBaseView::update_bounding_rect(), update_polygon(), and PolygonPointView::updateParameterizedItem().

m_polygon

QPolygonF PolygonView::m_polygon

private

Definition at line 53 of file PolygonView.h.

Referenced by paint(), and update_polygon().

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

• /home/www/ba/GUI/coregui/Views/MaskWidgets/PolygonView.h
• /home/www/ba/GUI/coregui/Views/MaskWidgets/PolygonView.cpp