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QCPAbstractLegendItem Class Referenceabstract

The abstract base class for all entries in a QCPLegend. More...

#include <qcustomplot.h>

+ Inheritance diagram for QCPAbstractLegendItem:

Signals

void selectionChanged (bool selected)
 This signal is emitted when the selection state of this legend item has changed, either by user interaction or by a direct call to setSelected. More...
 
void selectableChanged (bool selectable)
 
- Signals inherited from QCPLayerable
void layerChanged (QCPLayer *newLayer)
 This signal is emitted when the layer of this layerable changes, i.e. More...
 

Public Member Functions

 QCPAbstractLegendItem (QCPLegend *parent)
 Constructs a QCPAbstractLegendItem and associates it with the QCPLegend parent. More...
 
QCPLegendparentLegend () const
 
QFont font () const
 
QColor textColor () const
 
QFont selectedFont () const
 
QColor selectedTextColor () const
 
bool selectable () const
 
bool selected () const
 
void setFont (const QFont &font)
 Sets the default font of this specific legend item to font. More...
 
void setTextColor (const QColor &color)
 Sets the default text color of this specific legend item to color. More...
 
void setSelectedFont (const QFont &font)
 When this legend item is selected, font is used to draw generic text, instead of the normal font set with setFont. More...
 
void setSelectedTextColor (const QColor &color)
 When this legend item is selected, color is used to draw generic text, instead of the normal color set with setTextColor. More...
 
Q_SLOT void setSelectable (bool selectable)
 Sets whether this specific legend item is selectable. More...
 
Q_SLOT void setSelected (bool selected)
 Sets whether this specific legend item is selected. More...
 
virtual double selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=0) const
 Layout elements are sensitive to events inside their outer rect. More...
 
- Public Member Functions inherited from QCPLayoutElement
 QCPLayoutElement (QCustomPlot *parentPlot=0)
 Creates an instance of QCPLayoutElement and sets default values. More...
 
virtual ~QCPLayoutElement ()
 
QCPLayoutlayout () const
 Returns the parent layout of this layout element. More...
 
QRect rect () const
 Returns the inner rect of this layout element. More...
 
QRect outerRect () const
 
QMargins margins () const
 
QMargins minimumMargins () const
 
QCP::MarginSides autoMargins () const
 
QSize minimumSize () const
 
QSize maximumSize () const
 
QCPMarginGroupmarginGroup (QCP::MarginSide side) const
 
QHash< QCP::MarginSide, QCPMarginGroup * > marginGroups () const
 
void setOuterRect (const QRect &rect)
 Sets the outer rect of this layout element. More...
 
void setMargins (const QMargins &margins)
 Sets the margins of this layout element. More...
 
void setMinimumMargins (const QMargins &margins)
 If setAutoMargins is enabled on some or all margins, this function is used to provide minimum values for those margins. More...
 
void setAutoMargins (QCP::MarginSides sides)
 Sets on which sides the margin shall be calculated automatically. More...
 
void setMinimumSize (const QSize &size)
 Sets the minimum size for the inner rect of this layout element. More...
 
void setMinimumSize (int width, int height)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the minimum size for the inner rect of this layout element. More...
 
void setMaximumSize (const QSize &size)
 Sets the maximum size for the inner rect of this layout element. More...
 
void setMaximumSize (int width, int height)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Sets the maximum size for the inner rect of this layout element. More...
 
void setMarginGroup (QCP::MarginSides sides, QCPMarginGroup *group)
 Sets the margin group of the specified margin sides. More...
 
virtual void update (UpdatePhase phase)
 Updates the layout element and sub-elements. More...
 
virtual QSize minimumSizeHint () const
 Returns the minimum size this layout element (the inner rect) may be compressed to. More...
 
virtual QSize maximumSizeHint () const
 Returns the maximum size this layout element (the inner rect) may be expanded to. More...
 
virtual QList< QCPLayoutElement * > elements (bool recursive) const
 Returns a list of all child elements in this layout element. More...
 
- Public Member Functions inherited from QCPLayerable
 QCPLayerable (QCustomPlot *plot, QString targetLayer="", QCPLayerable *parentLayerable=0)
 Creates a new QCPLayerable instance. More...
 
 ~QCPLayerable ()
 
bool visible () const
 
QCustomPlotparentPlot () const
 
QCPLayerableparentLayerable () const
 Returns the parent layerable of this layerable. More...
 
QCPLayerlayer () const
 
bool antialiased () const
 
void setVisible (bool on)
 Sets the visibility of this layerable object. More...
 
Q_SLOT bool setLayer (QCPLayer *layer)
 Sets the layer of this layerable object. More...
 
bool setLayer (const QString &layerName)
 This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts. Sets the layer of this layerable object by name. More...
 
void setAntialiased (bool enabled)
 Sets whether this object will be drawn antialiased or not. More...
 
bool realVisibility () const
 Returns whether this layerable is visible, taking the visibility of the layerable parent and the visibility of the layer this layerable is on into account. More...
 

Protected Member Functions

virtual QCP::Interaction selectionCategory () const
 
virtual void applyDefaultAntialiasingHint (QCPPainter *painter) const
 
virtual QRect clipRect () const
 
virtual void draw (QCPPainter *painter)=0
 
virtual void selectEvent (QMouseEvent *event, bool additive, const QVariant &details, bool *selectionStateChanged)
 
virtual void deselectEvent (bool *selectionStateChanged)
 
- Protected Member Functions inherited from QCPLayoutElement
virtual int calculateAutoMargin (QCP::MarginSide side)
 
virtual void mousePressEvent (QMouseEvent *event)
 This event is called, if the mouse was pressed while being inside the outer rect of this layout element. More...
 
virtual void mouseMoveEvent (QMouseEvent *event)
 This event is called, if the mouse is moved inside the outer rect of this layout element. More...
 
virtual void mouseReleaseEvent (QMouseEvent *event)
 This event is called, if the mouse was previously pressed inside the outer rect of this layout element and is now released. More...
 
virtual void mouseDoubleClickEvent (QMouseEvent *event)
 This event is called, if the mouse is double-clicked inside the outer rect of this layout element. More...
 
virtual void wheelEvent (QWheelEvent *event)
 This event is called, if the mouse wheel is scrolled while the cursor is inside the rect of this layout element. More...
 
virtual void parentPlotInitialized (QCustomPlot *parentPlot)
 
- Protected Member Functions inherited from QCPLayerable
void initializeParentPlot (QCustomPlot *parentPlot)
 
void setParentLayerable (QCPLayerable *parentLayerable)
 
bool moveToLayer (QCPLayer *layer, bool prepend)
 
void applyAntialiasingHint (QCPPainter *painter, bool localAntialiased, QCP::AntialiasedElement overrideElement) const
 

Protected Attributes

QCPLegendmParentLegend
 
QFont mFont
 
QColor mTextColor
 
QFont mSelectedFont
 
QColor mSelectedTextColor
 
bool mSelectable
 
bool mSelected
 
- Protected Attributes inherited from QCPLayoutElement
QCPLayoutmParentLayout
 
QSize mMinimumSize
 
QSize mMaximumSize
 
QRect mRect
 
QRect mOuterRect
 
QMargins mMargins
 
QMargins mMinimumMargins
 
QCP::MarginSides mAutoMargins
 
QHash< QCP::MarginSide, QCPMarginGroup * > mMarginGroups
 
- Protected Attributes inherited from QCPLayerable
bool mVisible
 
QCustomPlotmParentPlot
 
QPointer< QCPLayerablemParentLayerable
 
QCPLayermLayer
 
bool mAntialiased
 

Friends

class QCPLegend
 

Additional Inherited Members

- Public Types inherited from QCPLayoutElement
enum  UpdatePhase {
  upPreparation ,
  upMargins ,
  upLayout
}
 Defines the phases of the update process, that happens just before a replot. More...
 

Detailed Description

The abstract base class for all entries in a QCPLegend.

It defines a very basic interface for entries in a QCPLegend. For representing plottables in the legend, the subclass QCPPlottableLegendItem is more suitable.

Only derive directly from this class when you need absolute freedom (e.g. a custom legend entry that's not even associated with a plottable).

You must implement the following pure virtual functions:

You inherit the following members you may use:

QCPLegend *mParentLegend A pointer to the parent QCPLegend.
QFont mFont The generic font of the item. You should use this font for all or at least the most prominent text of the item.

Definition at line 2057 of file qcustomplot.h.

Constructor & Destructor Documentation

◆ QCPAbstractLegendItem()

QCPAbstractLegendItem::QCPAbstractLegendItem ( QCPLegend parent)
explicit

Constructs a QCPAbstractLegendItem and associates it with the QCPLegend parent.

This does not cause the item to be added to parent, so QCPLegend::addItem must be called separately.

Definition at line 12658 of file qcustomplot.cpp.

Member Function Documentation

◆ applyDefaultAntialiasingHint()

void QCPAbstractLegendItem::applyDefaultAntialiasingHint ( QCPPainter painter) const
protectedvirtual

Reimplemented from QCPLayoutElement.

Definition at line 12760 of file qcustomplot.cpp.

◆ clipRect()

QRect QCPAbstractLegendItem::clipRect ( ) const
protectedvirtual

Reimplemented from QCPLayerable.

Definition at line 12766 of file qcustomplot.cpp.

◆ deselectEvent()

void QCPAbstractLegendItem::deselectEvent ( bool *  selectionStateChanged)
protectedvirtual

Reimplemented from QCPLayerable.

Definition at line 12786 of file qcustomplot.cpp.

◆ draw()

virtual void QCPAbstractLegendItem::draw ( QCPPainter painter)
protectedpure virtual

Reimplemented from QCPLayoutElement.

Implemented in QCPPlottableLegendItem.

◆ font()

QFont QCPAbstractLegendItem::font ( ) const
inline

Definition at line 2074 of file qcustomplot.h.

◆ parentLegend()

QCPLegend* QCPAbstractLegendItem::parentLegend ( ) const
inline

Definition at line 2073 of file qcustomplot.h.

◆ selectable()

bool QCPAbstractLegendItem::selectable ( ) const
inline

Definition at line 2078 of file qcustomplot.h.

◆ selectableChanged

void QCPAbstractLegendItem::selectableChanged ( bool  selectable)
signal

◆ selected()

bool QCPAbstractLegendItem::selected ( ) const
inline

Definition at line 2079 of file qcustomplot.h.

◆ selectedFont()

QFont QCPAbstractLegendItem::selectedFont ( ) const
inline

Definition at line 2076 of file qcustomplot.h.

◆ selectedTextColor()

QColor QCPAbstractLegendItem::selectedTextColor ( ) const
inline

Definition at line 2077 of file qcustomplot.h.

◆ selectEvent()

void QCPAbstractLegendItem::selectEvent ( QMouseEvent *  event,
bool  additive,
const QVariant &  details,
bool *  selectionStateChanged 
)
protectedvirtual

Reimplemented from QCPLayerable.

Definition at line 12772 of file qcustomplot.cpp.

◆ selectionCategory()

QCP::Interaction QCPAbstractLegendItem::selectionCategory ( ) const
protectedvirtual

Reimplemented from QCPLayerable.

Definition at line 13476 of file qcustomplot.cpp.

◆ selectionChanged

void QCPAbstractLegendItem::selectionChanged ( bool  selected)
signal

This signal is emitted when the selection state of this legend item has changed, either by user interaction or by a direct call to setSelected.

◆ selectTest()

double QCPAbstractLegendItem::selectTest ( const QPointF &  pos,
bool  onlySelectable,
QVariant *  details = 0 
) const
virtual

Layout elements are sensitive to events inside their outer rect.

If pos is within the outer rect, this method returns a value corresponding to 0.99 times the parent plot's selection tolerance. However, layout elements are not selectable by default. So if onlySelectable is true, -1.0 is returned.

See QCPLayerable::selectTest for a general explanation of this virtual method.

QCPLayoutElement subclasses may reimplement this method to provide more specific selection test behaviour.

Reimplemented from QCPLayoutElement.

Definition at line 12746 of file qcustomplot.cpp.

◆ setFont()

void QCPAbstractLegendItem::setFont ( const QFont &  font)

Sets the default font of this specific legend item to font.

See also
setTextColor, QCPLegend::setFont

Definition at line 12677 of file qcustomplot.cpp.

◆ setSelectable()

void QCPAbstractLegendItem::setSelectable ( bool  selectable)

Sets whether this specific legend item is selectable.

See also
setSelectedParts, QCustomPlot::setInteractions

Definition at line 12719 of file qcustomplot.cpp.

◆ setSelected()

void QCPAbstractLegendItem::setSelected ( bool  selected)

Sets whether this specific legend item is selected.

It is possible to set the selection state of this item by calling this function directly, even if setSelectable is set to false.

See also
setSelectableParts, QCustomPlot::setInteractions

Definition at line 12736 of file qcustomplot.cpp.

◆ setSelectedFont()

void QCPAbstractLegendItem::setSelectedFont ( const QFont &  font)

When this legend item is selected, font is used to draw generic text, instead of the normal font set with setFont.

See also
setFont, QCPLegend::setSelectedFont

Definition at line 12698 of file qcustomplot.cpp.

◆ setSelectedTextColor()

void QCPAbstractLegendItem::setSelectedTextColor ( const QColor &  color)

When this legend item is selected, color is used to draw generic text, instead of the normal color set with setTextColor.

See also
setTextColor, QCPLegend::setSelectedTextColor

Definition at line 12709 of file qcustomplot.cpp.

◆ setTextColor()

void QCPAbstractLegendItem::setTextColor ( const QColor &  color)

Sets the default text color of this specific legend item to color.

See also
setFont, QCPLegend::setTextColor

Definition at line 12687 of file qcustomplot.cpp.

◆ textColor()

QColor QCPAbstractLegendItem::textColor ( ) const
inline

Definition at line 2075 of file qcustomplot.h.

Friends And Related Function Documentation

◆ QCPLegend

friend class QCPLegend
friend

Definition at line 2117 of file qcustomplot.h.

Member Data Documentation

◆ mFont

QFont QCPAbstractLegendItem::mFont
protected

Definition at line 2099 of file qcustomplot.h.

◆ mParentLegend

QCPLegend* QCPAbstractLegendItem::mParentLegend
protected

Definition at line 2098 of file qcustomplot.h.

◆ mSelectable

bool QCPAbstractLegendItem::mSelectable
protected

Definition at line 2103 of file qcustomplot.h.

◆ mSelected

bool QCPAbstractLegendItem::mSelected
protected

Definition at line 2103 of file qcustomplot.h.

◆ mSelectedFont

QFont QCPAbstractLegendItem::mSelectedFont
protected

Definition at line 2101 of file qcustomplot.h.

◆ mSelectedTextColor

QColor QCPAbstractLegendItem::mSelectedTextColor
protected

Definition at line 2102 of file qcustomplot.h.

◆ mTextColor

QColor QCPAbstractLegendItem::mTextColor
protected

Definition at line 2100 of file qcustomplot.h.


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