Referencia de la Clase QCPItemRect

A rectangle. Más...

Diagrama de herencias de QCPItemRect

## Métodos públicos

| QCPItemRect (QCustomPlot *parentPlot)
QPen | pen () const
QPen | selectedPen () const
QBrush | brush () const
QBrush | selectedBrush () const
void | setPen (const QPen &pen)
void | setSelectedPen (const QPen &pen)
void | setBrush (const QBrush &brush)
void | setSelectedBrush (const QBrush &brush)
virtual double | selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=0) const
Métodos públicos heredados desde QCPAbstractItem
| QCPAbstractItem (QCustomPlot *parentPlot)
bool | clipToAxisRect () const
QCPAxisRect * | clipAxisRect () const
bool | selectable () const
bool | selected () const
void | setClipToAxisRect (bool clip)
void | setClipAxisRect (QCPAxisRect *rect)
void | setSelectable (bool selectable)
void | setSelected (bool selected)
QList< QCPItemPosition * > | positions () const
QList< QCPItemAnchor * > | anchors () const
QCPItemPosition * | position (const QString &name) const
QCPItemAnchor * | anchor (const QString &name) const
bool | hasAnchor (const QString &name) const
Métodos públicos heredados desde QCPLayerable
| QCPLayerable (QCustomPlot *plot, QString targetLayer="", QCPLayerable *parentLayerable=0)
bool | visible () const
QCustomPlot * | parentPlot () const
QCPLayerable * | parentLayerable () const
QCPLayer * | layer () const
bool | antialiased () const
void | setVisible (bool on)
bool | setLayer (QCPLayer *layer)
bool | setLayer (const QString &layerName)
void | setAntialiased (bool enabled)
bool | realVisibility () const

## Atributos públicos

QCPItemPosition *const | topLeft
QCPItemPosition *const | bottomRight
QCPItemAnchor *const | top
QCPItemAnchor *const | topRight
QCPItemAnchor *const | right
QCPItemAnchor *const | bottom
QCPItemAnchor *const | bottomLeft
QCPItemAnchor *const | left

## Tipos protegidos

enum | AnchorIndex { aiTop, aiTopRight, aiRight, aiBottom, aiBottomLeft, aiLeft }

## Métodos protegidos

virtual void | draw (QCPPainter *painter)
virtual QPointF | anchorPixelPoint (int anchorId) const
QPen | mainPen () const
QBrush | mainBrush () const
Métodos protegidos heredados desde QCPAbstractItem
virtual QCP::Interaction | selectionCategory () const
virtual QRect | clipRect () const
virtual void | applyDefaultAntialiasingHint (QCPPainter *painter) const
virtual void | selectEvent (QMouseEvent *event, bool additive, const QVariant &details, bool *selectionStateChanged)
virtual void | deselectEvent (bool *selectionStateChanged)
double | distSqrToLine (const QPointF &start, const QPointF &end, const QPointF &point) const
double | rectSelectTest (const QRectF &rect, const QPointF &pos, bool filledRect) const
QCPItemPosition * | createPosition (const QString &name)
QCPItemAnchor * | createAnchor (const QString &name, int anchorId)
Métodos protegidos heredados desde QCPLayerable
virtual void | parentPlotInitialized (QCustomPlot *parentPlot)
void | initializeParentPlot (QCustomPlot *parentPlot)
void | setParentLayerable (QCPLayerable *parentLayerable)
bool | moveToLayer (QCPLayer *layer, bool prepend)
void | applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const

## Atributos protegidos

QPen | mPen
QPen | mSelectedPen
QBrush | mBrush
QBrush | mSelectedBrush
Atributos protegidos heredados desde QCPAbstractItem
bool | mClipToAxisRect
QPointer< QCPAxisRect > | mClipAxisRect
QList< QCPItemPosition * > | mPositions
QList< QCPItemAnchor * > | mAnchors
bool | mSelectable
bool | mSelected
Atributos protegidos heredados desde QCPLayerable
bool | mVisible
QCustomPlot * | mParentPlot
QPointer< QCPLayerable > | mParentLayerable
QCPLayer * | mLayer
bool | mAntialiased

## Otros miembros heredados

Señales heredados desde QCPAbstractItem
void | selectionChanged (bool selected)

## Descripción detallada

A rectangle.

Rectangle example. Blue dotted circles are anchors, solid blue discs are positions.

It has two positions, topLeft and bottomRight, which define the rectangle.

## Documentación del constructor y destructor

QCPItemRect::QCPItemRect | ( | QCustomPlot * | parentPlot | ) |

Creates a rectangle item and sets default values.

The constructed item can be added to the plot with QCustomPlot::addItem.

## Documentación de las funciones miembro

double QCPItemRect::selectTest | ( | const QPointF & | pos,
|  | bool | onlySelectable,
|  | QVariant * | details = `0`
| ) |  | const

virtual

This function is used to decide whether a click hits a layerable object or not.

pos is a point in pixel coordinates on the QCustomPlot surface. This function returns the shortest pixel distance of this point to the object. If the object is either invisible or the distance couldn't be determined, -1.0 is returned. Further, if onlySelectable is true and the object is not selectable, -1.0 is returned, too.

If the item is represented not by single lines but by an area like QCPItemRect or QCPItemText, a click inside the area returns a constant value greater zero (typically the selectionTolerance of the parent QCustomPlot multiplied by 0.99). If the click lies outside the area, this function returns -1.0.

Providing a constant value for area objects allows selecting line objects even when they are obscured by such area objects, by clicking close to the lines (i.e. closer than 0.99*selectionTolerance).

The actual setting of the selection state is not done by this function. This is handled by the parent QCustomPlot when the mouseReleaseEvent occurs, and the finally selected object is notified via the selectEvent/deselectEvent methods.

details is an optional output parameter. Every layerable subclass may place any information in details. This information will be passed to selectEvent when the parent QCustomPlot decides on the basis of this selectTest call, that the object was successfully selected. The subsequent call to selectEvent will carry the details. This is useful for multi-part objects (like QCPAxis). This way, a possibly complex calculation to decide which part was clicked is only done once in selectTest. The result (i.e. the actually clicked part) can then be placed in details. So in the subsequent selectEvent, the decision which part was selected doesn't have to be done a second time for a single selection operation.

You may pass 0 as details to indicate that you are not interested in those selection details.

Ver también
  selectEvent, deselectEvent, QCustomPlot::setInteractions

Implementa QCPAbstractItem.

void QCPItemRect::setBrush | ( | const QBrush & | brush | ) |

Sets the brush that will be used to fill the rectangle. To disable filling, set brush to Qt::NoBrush.

Ver también
  setSelectedBrush, setPen

void QCPItemRect::setPen | ( | const QPen & | pen | ) |

Sets the pen that will be used to draw the line of the rectangle

Ver también
  setSelectedPen, setBrush

void QCPItemRect::setSelectedBrush | ( | const QBrush & | brush | ) |

Sets the brush that will be used to fill the rectangle when selected. To disable filling, set brush to Qt::NoBrush.

Ver también
  setBrush

void QCPItemRect::setSelectedPen | ( | const QPen & | pen | ) |

Sets the pen that will be used to draw the line of the rectangle when selected

Ver también
  setPen, setSelected

La documentación para esta clase fue generada a partir de los siguientes ficheros:

- qcustomplot.h
- qcustomplot.cpp