gui2::HandleElementView Class Reference

The handle QGraphicsViewItem on GraphicsScene. More...

Inheritance diagram for gui2::HandleElementView:

Collaboration diagram for gui2::HandleElementView:

Public Member Functions
	HandleElementView ()
	The constructor. More...
void	adaptH (bool choice)
	Adapt the height. More...
void	adaptW (bool choice)
	Adapt the width. More...
void	adaptX (bool choice)
	Adapt the x position. More...
void	adaptY (bool choice)
	Adapt the y position. More...
void	advance (int phase) override
	Advance method used by the scene adapter. More...
QRectF	boundingRect () const override
	The bounding rectangle of the handle. More...
QPointF	getLastPos () const
	Get the last position of the item. More...
void	mouseMoveEvent (QGraphicsSceneMouseEvent *event) override
	On move update the model. More...
void	paint (QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override
	The overriden paint method. More...
ModelView::SceneAdapterInterface *	sceneAdapter () const
	Get the conversion axes. More...
void	setBrush (QBrush brush)
	Set the brush. More...
void	setCenterBased (bool choice)
	Adapt the dimensions according to the center. More...
void	setLayerElementController (LayerElementController *controller)
	Set the controller to report back the move. More...
void	setPen (QPen pen)
	Set the pen. More...
void	setRectangle (QRectF rectangle)
	Set the draw rectangle. More...
QPainterPath	shape () const override
	The shape. More...
void	stretchLeft (bool choice)
	Stretch the rectangle to the left limit of the viewport. More...
void	stretchRight (bool choice)
	Stretch the rectangle to the right limit of the viewport. More...

Protected Member Functions
QPainterPath	displayPath (QPainterPath real_path) const
	modify the path for display according to the scene adapter More...
QRectF	displayRect (const QRectF &real_rect) const
	modify the rectangle for display according to the scene adapter More...
void	hoverEnterEvent (QGraphicsSceneHoverEvent *event) override
	The hoover enter event. More...
void	hoverLeaveEvent (QGraphicsSceneHoverEvent *event) override
	The hoover exit event. More...
void	mousePressEvent (QGraphicsSceneMouseEvent *event) override
	The mouse press event. More...
void	mouseReleaseEvent (QGraphicsSceneMouseEvent *event) override
	The mouse release event. More...
QPointF	scenePos (QPointF pixel_pos) const
	modify the rectangle for display according to the scene adapter More...

Protected Attributes
QBrush	m_brush
QPen	m_pen
QPointF	m_pos
QRectF	m_rectangle
LayerElementController *	p_controller

Private Member Functions
QRectF	displayRectCenterBased (const QRectF &real_rect) const
	Helper function for displayRect based on the center of real_rect. More...
QRectF	displayRectEdgeBased (const QRectF &real_rect) const
	Helper function for displayRect based on the edge of real_rect. More...
QRectF	stretchRectLeft (const QRectF &real_rect) const
	Stretch the rectangle to the left limit of the viewport. More...
QRectF	stretchRectRight (const QRectF &real_rect) const
	Stretch the rectangle to the right limit of the viewport. More...

Private Attributes
bool	m_adapt_height = true
bool	m_adapt_width = true
bool	m_adapt_x = true
bool	m_adapt_y = true
bool	m_center_based = true
bool	m_stretch_left = false
bool	m_stretch_right = false

Detailed Description

The handle QGraphicsViewItem on GraphicsScene.

Definition at line 30 of file handleelementview.h.

Constructor & Destructor Documentation

HandleElementView()

gui2::HandleElementView::HandleElementView

(

)

The constructor.

Definition at line 25 of file handleelementview.cpp.

    : ElementView()
    , m_pos(QPointF(0, 0))
    , m_rectangle(QRectF(0, 0, 0, 0))
    , m_brush(QBrush())
    , m_pen(QPen())
{
    adaptW(false);
    adaptH(false);
    setZValue(2);
}

References gui2::ElementView::adaptH(), and gui2::ElementView::adaptW().

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Member Function Documentation

adaptH()

void gui2::ElementView::adaptH ( bool  choice )

inherited

Adapt the height.

Definition at line 217 of file elementview.cpp.

{
    m_adapt_height = choice;
}

References gui2::ElementView::m_adapt_height.

Referenced by HandleElementView().

adaptW()

void gui2::ElementView::adaptW ( bool  choice )

inherited

Adapt the width.

Definition at line 211 of file elementview.cpp.

{
    m_adapt_width = choice;
}

References gui2::ElementView::m_adapt_width.

Referenced by HandleElementView().

adaptX()

void gui2::ElementView::adaptX ( bool  choice )

inherited

Adapt the x position.

Definition at line 199 of file elementview.cpp.

{
    m_adapt_x = choice;
}

References gui2::ElementView::m_adapt_x.

adaptY()

void gui2::ElementView::adaptY ( bool  choice )

inherited

Adapt the y position.

Definition at line 205 of file elementview.cpp.

{
    m_adapt_y = choice;
}

References gui2::ElementView::m_adapt_y.

advance()

void gui2::ElementView::advance ( int  phase )

overrideinherited

Advance method used by the scene adapter.

Definition at line 44 of file elementview.cpp.

{
    if (!phase)
        return;
    prepareGeometryChange();
    update();
}

boundingRect()

QRectF gui2::HandleElementView::boundingRect ( ) const

override

The bounding rectangle of the handle.

Definition at line 55 of file handleelementview.cpp.

{
    return displayRect(m_rectangle);
}

References gui2::ElementView::displayRect(), and m_rectangle.

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displayPath()

QPainterPath gui2::ElementView::displayPath ( QPainterPath  real_path ) const

protectedinherited

modify the path for display according to the scene adapter

Definition at line 168 of file elementview.cpp.

{
    auto adapter = sceneAdapter();
    if (!adapter)
        return real_path;
 
    auto display_path = QPainterPath(real_path);
    for (int i = 0; i < display_path.elementCount(); i++) {
        QPointF pt = display_path.elementAt(i);
        display_path.setElementPositionAt(i, adapter->toSceneX(-pt.x()), adapter->toSceneY(pt.y()));
    }
    return display_path;
}

References gui2::ElementView::sceneAdapter().

Referenced by gui2::RoughnessElementView::boundingRect(), gui2::RoughnessElementView::paint(), and gui2::RoughnessElementView::shape().

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displayRect()

QRectF gui2::ElementView::displayRect ( const QRectF &  real_rect ) const

protectedinherited

modify the rectangle for display according to the scene adapter

Definition at line 60 of file elementview.cpp.

{
    auto adapter = sceneAdapter();
    if (!adapter)
        return real_rect;
 
    auto output = QRectF(real_rect);
 
    if (m_center_based) {
        output = displayRectCenterBased(real_rect);
    } else {
        output = displayRectEdgeBased(real_rect);
    }
 
    if (m_stretch_left) {
        output = stretchRectLeft(output);
    } else if (m_stretch_right) {
        output = stretchRectRight(output);
    }
 
    return output;
}

References gui2::ElementView::displayRectCenterBased(), gui2::ElementView::displayRectEdgeBased(), gui2::ElementView::m_center_based, gui2::ElementView::m_stretch_left, gui2::ElementView::m_stretch_right, gui2::ElementView::sceneAdapter(), gui2::ElementView::stretchRectLeft(), and gui2::ElementView::stretchRectRight().

Referenced by boundingRect(), gui2::SegmentElementView::boundingRect(), paint(), gui2::SegmentElementView::paint(), shape(), and gui2::SegmentElementView::shape().

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displayRectCenterBased()

QRectF gui2::ElementView::displayRectCenterBased ( const QRectF &  real_rect ) const

privateinherited

Helper function for displayRect based on the center of real_rect.

Definition at line 84 of file elementview.cpp.

{
    auto adapter = sceneAdapter();
    double x = real_rect.x();
    double y = real_rect.y();
    double w = real_rect.width();
    double h = real_rect.height();
 
    double center_x = x + w / 2.;
    double center_y = y + h / 2.;
 
    if (m_adapt_x) {
        center_x = adapter->toSceneX(-center_x);
    }
    if (m_adapt_y) {
        center_y = adapter->toSceneY(center_y);
    }
    if (m_adapt_width) {
        w = adapter->toSceneX(w) - adapter->toSceneX(0);
    }
    if (m_adapt_height) {
        h = adapter->toSceneY(h) - adapter->toSceneY(0);
    }
 
    x = center_x - w / 2;
    y = center_y - h / 2;
 
    return QRectF(x, y, w, h);
}

References gui2::ElementView::m_adapt_height, gui2::ElementView::m_adapt_width, gui2::ElementView::m_adapt_x, gui2::ElementView::m_adapt_y, and gui2::ElementView::sceneAdapter().

Referenced by gui2::ElementView::displayRect().

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displayRectEdgeBased()

QRectF gui2::ElementView::displayRectEdgeBased ( const QRectF &  real_rect ) const

privateinherited

Helper function for displayRect based on the edge of real_rect.

Definition at line 115 of file elementview.cpp.

{
    auto adapter = sceneAdapter();
    double x = real_rect.x();
    double y = real_rect.y();
    double w = real_rect.width();
    double h = real_rect.height();
 
    if (m_adapt_x) {
        x = adapter->toSceneX(-x);
    }
    if (m_adapt_y) {
        y = adapter->toSceneY(y);
    }
    if (m_adapt_width) {
        w = adapter->toSceneX(w) - adapter->toSceneX(0);
    }
    if (m_adapt_height) {
        h = adapter->toSceneY(h) - adapter->toSceneY(0);
    }
 
    return QRectF(x, y, w, h);
}

References gui2::ElementView::m_adapt_height, gui2::ElementView::m_adapt_width, gui2::ElementView::m_adapt_x, gui2::ElementView::m_adapt_y, and gui2::ElementView::sceneAdapter().

Referenced by gui2::ElementView::displayRect().

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getLastPos()

QPointF gui2::HandleElementView::getLastPos

(

)

const

Get the last position of the item.

Definition at line 93 of file handleelementview.cpp.

{
    return m_pos;
}

References m_pos.

Referenced by gui2::LayerElementController::leftHandleMoved(), and gui2::LayerElementController::rightHandleMoved().

hoverEnterEvent()

void gui2::ElementView::hoverEnterEvent ( QGraphicsSceneHoverEvent *  event )

overrideprotectedinherited

The hoover enter event.

Definition at line 235 of file elementview.cpp.

{
    if (flags() & QGraphicsItem::ItemIsMovable)
        setCursor(QCursor(Qt::OpenHandCursor));
    QGraphicsItem::hoverEnterEvent(event);
}

hoverLeaveEvent()

void gui2::ElementView::hoverLeaveEvent ( QGraphicsSceneHoverEvent *  event )

overrideprotectedinherited

The hoover exit event.

Definition at line 243 of file elementview.cpp.

{
    unsetCursor();
    QGraphicsItem::hoverLeaveEvent(event);
}

mouseMoveEvent()

void gui2::HandleElementView::mouseMoveEvent ( QGraphicsSceneMouseEvent *  event )

override

On move update the model.

Definition at line 61 of file handleelementview.cpp.

{
    m_pos = scenePos(event->pos());
    p_controller->handleViewMoved(this);
}

References gui2::LayerElementController::handleViewMoved(), m_pos, p_controller, and gui2::ElementView::scenePos().

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mousePressEvent()

void gui2::ElementView::mousePressEvent ( QGraphicsSceneMouseEvent *  event )

overrideprotectedinherited

The mouse press event.

Definition at line 250 of file elementview.cpp.

{
    if (flags() & QGraphicsItem::ItemIsMovable)
        setCursor(QCursor(Qt::ClosedHandCursor));
    QGraphicsItem::mousePressEvent(event);
}

mouseReleaseEvent()

void gui2::ElementView::mouseReleaseEvent ( QGraphicsSceneMouseEvent *  event )

overrideprotectedinherited

The mouse release event.

Definition at line 258 of file elementview.cpp.

{
    if (flags() & QGraphicsItem::ItemIsMovable)
        setCursor(QCursor(Qt::OpenHandCursor));
    QGraphicsItem::mouseReleaseEvent(event);
}

paint()

void gui2::HandleElementView::paint ( QPainter *  painter, const QStyleOptionGraphicsItem *  option, QWidget *  widget  )

override

The overriden paint method.

Definition at line 38 of file handleelementview.cpp.

{
    painter->setClipRect(sceneAdapter()->viewportRectangle());
    painter->setPen(m_pen);
    painter->setBrush(m_brush);
    painter->drawEllipse(displayRect(m_rectangle));
}

References gui2::ElementView::displayRect(), m_brush, m_pen, m_rectangle, and gui2::ElementView::sceneAdapter().

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sceneAdapter()

ModelView::SceneAdapterInterface * gui2::ElementView::sceneAdapter ( ) const

inherited

Get the conversion axes.

Definition at line 34 of file elementview.cpp.

{
    GraphicsScene* scene_item = static_cast<GraphicsScene*>(scene());
    if (!scene_item)
        return nullptr;
 
    return scene_item->sceneAdapter();
}

References gui2::GraphicsScene::sceneAdapter().

Referenced by gui2::ElementView::displayPath(), gui2::ElementView::displayRect(), gui2::ElementView::displayRectCenterBased(), gui2::ElementView::displayRectEdgeBased(), gui2::ElementView::paint(), paint(), gui2::RoughnessElementView::paint(), gui2::SegmentElementView::paint(), gui2::ElementView::scenePos(), gui2::ElementView::stretchRectLeft(), and gui2::ElementView::stretchRectRight().

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scenePos()

QPointF gui2::ElementView::scenePos ( QPointF  pixel_pos ) const

protectedinherited

modify the rectangle for display according to the scene adapter

Definition at line 183 of file elementview.cpp.

{
    auto adapter = sceneAdapter();
    if (!adapter)
        return pixel_pos;
 
    return QPointF(-adapter->fromSceneX(pixel_pos.x()), adapter->fromSceneY(pixel_pos.y()));
}

References gui2::ElementView::sceneAdapter().

Referenced by mouseMoveEvent(), and gui2::SegmentElementView::mouseMoveEvent().

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setBrush()

void gui2::HandleElementView::setBrush

(

QBrush

brush

)

Set the brush.

Definition at line 81 of file handleelementview.cpp.

{
    m_brush = brush;
}

References m_brush.

setCenterBased()

void gui2::ElementView::setCenterBased ( bool  choice )

inherited

Adapt the dimensions according to the center.

Definition at line 193 of file elementview.cpp.

{
    m_center_based = choice;
}

References gui2::ElementView::m_center_based.

setLayerElementController()

void gui2::HandleElementView::setLayerElementController

(

LayerElementController *

controller

)

Set the controller to report back the move.

Definition at line 68 of file handleelementview.cpp.

{
    p_controller = controller;
}

References p_controller.

setPen()

void gui2::HandleElementView::setPen

(

QPen

pen

)

Set the pen.

Definition at line 87 of file handleelementview.cpp.

{
    m_pen = pen;
}

References m_pen.

setRectangle()

void gui2::HandleElementView::setRectangle

(

QRectF

rectangle

)

Set the draw rectangle.

Definition at line 74 of file handleelementview.cpp.

{
    prepareGeometryChange();
    m_rectangle = rectangle;
}

References m_rectangle.

shape()

QPainterPath gui2::HandleElementView::shape ( ) const

override

The shape.

Definition at line 47 of file handleelementview.cpp.

{
    QPainterPath path;
    path.addRect(displayRect(m_rectangle));
    return path;
}

References gui2::ElementView::displayRect(), and m_rectangle.

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stretchLeft()

void gui2::ElementView::stretchLeft ( bool  choice )

inherited

Stretch the rectangle to the left limit of the viewport.

Definition at line 223 of file elementview.cpp.

{
    m_stretch_left = choice;
}

References gui2::ElementView::m_stretch_left.

stretchRectLeft()

QRectF gui2::ElementView::stretchRectLeft ( const QRectF &  real_rect ) const

privateinherited

Stretch the rectangle to the left limit of the viewport.

Definition at line 140 of file elementview.cpp.

{
    double x_i = real_rect.x();
    double y_i = real_rect.y();
    double x_f = real_rect.x() + real_rect.width();
    double y_f = real_rect.y() + real_rect.height();
 
    auto viewport_rect = sceneAdapter()->viewportRectangle();
    x_i = viewport_rect.x();
 
    return QRectF(x_i, y_i, x_f - x_i, y_f - y_i);
}

References gui2::ElementView::sceneAdapter(), and ModelView::SceneAdapterInterface::viewportRectangle().

Referenced by gui2::ElementView::displayRect().

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stretchRectRight()

QRectF gui2::ElementView::stretchRectRight ( const QRectF &  real_rect ) const

privateinherited

Stretch the rectangle to the right limit of the viewport.

Definition at line 154 of file elementview.cpp.

{
    double x_i = real_rect.x();
    double y_i = real_rect.y();
    double x_f = real_rect.x() + real_rect.width();
    double y_f = real_rect.y() + real_rect.height();
 
    auto viewport_rect = sceneAdapter()->viewportRectangle();
    x_f = viewport_rect.x() + viewport_rect.width();
 
    return QRectF(x_i, y_i, x_f - x_i, y_f - y_i);
}

References gui2::ElementView::sceneAdapter(), and ModelView::SceneAdapterInterface::viewportRectangle().

Referenced by gui2::ElementView::displayRect().

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stretchRight()

void gui2::ElementView::stretchRight ( bool  choice )

inherited

Stretch the rectangle to the right limit of the viewport.

Definition at line 229 of file elementview.cpp.

{
    m_stretch_right = choice;
}

References gui2::ElementView::m_stretch_right.

Member Data Documentation

m_adapt_height

bool gui2::ElementView::m_adapt_height = true

privateinherited

Definition at line 67 of file elementview.h.

Referenced by gui2::ElementView::adaptH(), gui2::ElementView::displayRectCenterBased(), and gui2::ElementView::displayRectEdgeBased().

m_adapt_width

bool gui2::ElementView::m_adapt_width = true

privateinherited

Definition at line 66 of file elementview.h.

Referenced by gui2::ElementView::adaptW(), gui2::ElementView::displayRectCenterBased(), and gui2::ElementView::displayRectEdgeBased().

m_adapt_x

bool gui2::ElementView::m_adapt_x = true

privateinherited

Definition at line 64 of file elementview.h.

Referenced by gui2::ElementView::adaptX(), gui2::ElementView::displayRectCenterBased(), and gui2::ElementView::displayRectEdgeBased().

m_adapt_y

bool gui2::ElementView::m_adapt_y = true

privateinherited

Definition at line 65 of file elementview.h.

Referenced by gui2::ElementView::adaptY(), gui2::ElementView::displayRectCenterBased(), and gui2::ElementView::displayRectEdgeBased().

m_brush

QBrush gui2::HandleElementView::m_brush

protected

Definition at line 50 of file handleelementview.h.

Referenced by paint(), and setBrush().

m_center_based

bool gui2::ElementView::m_center_based = true

privateinherited

Definition at line 63 of file elementview.h.

Referenced by gui2::ElementView::displayRect(), and gui2::ElementView::setCenterBased().

m_pen

QPen gui2::HandleElementView::m_pen

protected

Definition at line 51 of file handleelementview.h.

Referenced by paint(), and setPen().

m_pos

QPointF gui2::HandleElementView::m_pos

protected

Definition at line 48 of file handleelementview.h.

Referenced by getLastPos(), and mouseMoveEvent().

m_rectangle

QRectF gui2::HandleElementView::m_rectangle

protected

Definition at line 49 of file handleelementview.h.

Referenced by boundingRect(), paint(), setRectangle(), and shape().

m_stretch_left

bool gui2::ElementView::m_stretch_left = false

privateinherited

Definition at line 68 of file elementview.h.

Referenced by gui2::ElementView::displayRect(), and gui2::ElementView::stretchLeft().

m_stretch_right

bool gui2::ElementView::m_stretch_right = false

privateinherited

Definition at line 69 of file elementview.h.

Referenced by gui2::ElementView::displayRect(), and gui2::ElementView::stretchRight().

p_controller

LayerElementController* gui2::HandleElementView::p_controller

protected

Definition at line 47 of file handleelementview.h.

Referenced by mouseMoveEvent(), and setLayerElementController().

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

• /home/www/ba/gui2/sldeditor/handleelementview.h
• /home/www/ba/gui2/sldeditor/handleelementview.cpp