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QCPItemPixmap Class Reference

An arbitrary pixmap. More...

#include <plot2d.h>

Inheritance diagram for QCPItemPixmap:
QCPAbstractItem QCPLayerable

Public Member Functions

 QCPItemPixmap (QCustomPlot *parentPlot)
virtual ~QCPItemPixmap ()
QPixmap pixmap () const
bool scaled () const
Qt::AspectRatioMode aspectRatioMode () const
QPen pen () const
QPen selectedPen () const
void setPixmap (const QPixmap &pixmap)
void setScaled (bool scaled, Qt::AspectRatioMode aspectRatioMode=Qt::KeepAspectRatio)
void setPen (const QPen &pen)
void setSelectedPen (const QPen &pen)
virtual double selectTest (const QPointF &pos) const
- Public Member Functions inherited from QCPAbstractItem
 QCPAbstractItem (QCustomPlot *parentPlot)
virtual ~QCPAbstractItem ()
bool clipToAxisRect () const
QCPAxisclipKeyAxis () const
QCPAxisclipValueAxis () const
bool selectable () const
bool selected () const
void setClipToAxisRect (bool clip)
void setClipAxes (QCPAxis *keyAxis, QCPAxis *valueAxis)
void setClipKeyAxis (QCPAxis *axis)
void setClipValueAxis (QCPAxis *axis)
void setSelectable (bool selectable)
void setSelected (bool selected)
QList< QCPItemPosition * > positions () const
QList< QCPItemAnchor * > anchors () const
QCPItemPositionposition (const QString &name) const
QCPItemAnchoranchor (const QString &name) const
bool hasAnchor (const QString &name) const
- Public Member Functions inherited from QCPLayerable
 QCPLayerable (QCustomPlot *parentPlot)
 ~QCPLayerable ()
bool visible () const
QCustomPlotparentPlot () const
QCPLayerlayer () const
bool antialiased () const
void setVisible (bool on)
bool setLayer (QCPLayer *layer)
bool setLayer (const QString &layerName)
void setAntialiased (bool enabled)

Public Attributes

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

Protected Types

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

Protected Member Functions

virtual void draw (QCPPainter *painter)
virtual QPointF anchorPixelPoint (int anchorId) const
void updateScaledPixmap (QRect finalRect=QRect(), bool flipHorz=false, bool flipVert=false)
QRect getFinalRect (bool *flippedHorz=0, bool *flippedVert=0) const
QPen mainPen () const
- Protected Member Functions inherited from QCPAbstractItem
virtual QRect clipRect () const
virtual void applyDefaultAntialiasingHint (QCPPainter *painter) const
double distSqrToLine (const QPointF &start, const QPointF &end, const QPointF &point) const
double rectSelectTest (const QRectF &rect, const QPointF &pos, bool filledRect) const
QCPItemPositioncreatePosition (const QString &name)
QCPItemAnchorcreateAnchor (const QString &name, int anchorId)
- Protected Member Functions inherited from QCPLayerable
bool moveToLayer (QCPLayer *layer, bool prepend)
void applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const

Protected Attributes

QPixmap mPixmap
QPixmap mScaledPixmap
bool mScaled
Qt::AspectRatioMode mAspectRatioMode
QPen mPen
QPen mSelectedPen
- Protected Attributes inherited from QCPAbstractItem
bool mClipToAxisRect
bool mSelectable
bool mSelected
QList< QCPItemPosition * > mPositions
QList< QCPItemAnchor * > mAnchors
- Protected Attributes inherited from QCPLayerable
bool mVisible
bool mAntialiased

Additional Inherited Members

- Signals inherited from QCPAbstractItem
void selectionChanged (bool selected)

Detailed Description

An arbitrary pixmap.

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

It has two positions, topLeft and bottomRight, which define the rectangle the pixmap will be drawn in. Depending on the scale setting (setScaled), the pixmap will be either scaled to fit the rectangle or be drawn aligned to the topLeft position.

If scaling is enabled and topLeft is further to the bottom/right than bottomRight (as shown on the right side of the example image), the pixmap will be flipped in the respective orientations.

Member Enumeration Documentation


Constructor & Destructor Documentation

QCPItemPixmap::QCPItemPixmap ( QCustomPlot parentPlot)

Creates a rectangle item and sets default values.

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

QCPItemPixmap::~QCPItemPixmap ( )

Member Function Documentation

QPointF QCPItemPixmap::anchorPixelPoint ( int  anchorId) const

Reimplemented from QCPAbstractItem.

Qt::AspectRatioMode QCPItemPixmap::aspectRatioMode ( ) const
void QCPItemPixmap::draw ( QCPPainter painter)

Implements QCPAbstractItem.

QRect QCPItemPixmap::getFinalRect ( bool *  flippedHorz = 0,
bool *  flippedVert = 0 
) const
QPen QCPItemPixmap::mainPen ( ) const
QPen QCPItemPixmap::pen ( ) const
QPixmap QCPItemPixmap::pixmap ( ) const
bool QCPItemPixmap::scaled ( ) const
QPen QCPItemPixmap::selectedPen ( ) const
double QCPItemPixmap::selectTest ( const QPointF &  pos) const

This function is used to decide whether a click hits an item 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 item. If the item is either invisible or the distance couldn't be determined, -1.0 is returned. setSelectable has no influence on the return value of this function.

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 99% of the selectionTolerance of the parent QCustomPlot). 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.

See Also
setSelected, QCustomPlot::setInteractions

Implements QCPAbstractItem.

void QCPItemPixmap::setPen ( const QPen &  pen)

Sets the pen that will be used to draw a border around the pixmap.

See Also
setSelectedPen, setBrush
void QCPItemPixmap::setPixmap ( const QPixmap &  pixmap)

Sets the pixmap that will be displayed.

void QCPItemPixmap::setScaled ( bool  scaled,
Qt::AspectRatioMode  aspectRatioMode = Qt::KeepAspectRatio 

Sets whether the pixmap will be scaled to fit the rectangle defined by the topLeft and bottomRight positions.

void QCPItemPixmap::setSelectedPen ( const QPen &  pen)

Sets the pen that will be used to draw a border around the pixmap when selected

See Also
setPen, setSelected
void QCPItemPixmap::updateScaledPixmap ( QRect  finalRect = QRect(),
bool  flipHorz = false,
bool  flipVert = false 

Member Data Documentation

QCPItemAnchor* const QCPItemPixmap::bottom
QCPItemAnchor* const QCPItemPixmap::bottomLeft
QCPItemPosition* const QCPItemPixmap::bottomRight
QCPItemAnchor* const QCPItemPixmap::left
Qt::AspectRatioMode QCPItemPixmap::mAspectRatioMode
QPen QCPItemPixmap::mPen
QPixmap QCPItemPixmap::mPixmap
bool QCPItemPixmap::mScaled
QPixmap QCPItemPixmap::mScaledPixmap
QPen QCPItemPixmap::mSelectedPen
QCPItemAnchor* const QCPItemPixmap::right
QCPItemAnchor* const QCPItemPixmap::top
QCPItemPosition* const QCPItemPixmap::topLeft
QCPItemAnchor* const QCPItemPixmap::topRight

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