A color scale for use with color coding data such as QCPColorMap. More...

#include <qcustomplot.h>

Inheritance diagram for QCPColorScale:

Signals
void	dataRangeChanged (QCPRange newRange)
	This signal is emitted when the data range changes.

void	dataScaleTypeChanged (QCPAxis::ScaleType scaleType)
	This signal is emitted when the data scale type changes.

void	gradientChanged (QCPColorGradient newGradient)
	This signal is emitted when the gradient changes.

Signals inherited from QCPLayerable
void	layerChanged (QCPLayer *newLayer)
	This signal is emitted when the layer of this layerable changes, i.e.

Public Member Functions
	QCPColorScale (QCustomPlot *parentPlot)
	Constructs a new QCPColorScale.

virtual	~QCPColorScale ()

QCPAxis *	axis () const
	Returns the internal QCPAxis instance of this color scale.

QCPAxis::AxisType	type () const

QCPRange	dataRange () const

QCPAxis::ScaleType	dataScaleType () const

QCPColorGradient	gradient () const

QString	label () const

int	barWidth () const

bool	rangeDrag () const

bool	rangeZoom () const

void	setType (QCPAxis::AxisType type)
	Sets at which side of the color scale the axis is placed, and thus also its orientation.

Q_SLOT void	setDataRange (const QCPRange &dataRange)
	Sets the range spanned by the color gradient and that is shown by the axis in the color scale.

Q_SLOT void	setDataScaleType (QCPAxis::ScaleType scaleType)
	Sets the scale type of the color scale, i.e.

Q_SLOT void	setGradient (const QCPColorGradient &gradient)
	Sets the color gradient that will be used to represent data values.

void	setLabel (const QString &str)
	Sets the axis label of the color scale.

void	setBarWidth (int width)
	Sets the width (or height, for horizontal color scales) the bar where the gradient is displayed will have.

void	setRangeDrag (bool enabled)
	Sets whether the user can drag the data range (setDataRange).

void	setRangeZoom (bool enabled)
	Sets whether the user can zoom the data range (setDataRange) by scrolling the mouse wheel.

QList< QCPColorMap * >	colorMaps () const
	Returns a list of all the color maps associated with this color scale.

void	rescaleDataRange (bool onlyVisibleMaps)
	Changes the data range such that all color maps associated with this color scale are fully mapped to the gradient in the data dimension.

virtual void	update (UpdatePhase phase)
	Updates the layout element and sub-elements.

Public Member Functions inherited from QCPLayoutElement
	QCPLayoutElement (QCustomPlot *parentPlot=0)
	Creates an instance of QCPLayoutElement and sets default values.

virtual	~QCPLayoutElement ()

QCPLayout *	layout () const
	Returns the parent layout of this layout element.

QRect	rect () const
	Returns the inner rect of this layout element.

QRect	outerRect () const

QMargins	margins () const

QMargins	minimumMargins () const

QCP::MarginSides	autoMargins () const

QSize	minimumSize () const

QSize	maximumSize () const

QCPMarginGroup *	marginGroup (QCP::MarginSide side) const

QHash< QCP::MarginSide, QCPMarginGroup * >	marginGroups () const

void	setOuterRect (const QRect &rect)
	Sets the outer rect of this layout element.

void	setMargins (const QMargins &margins)
	Sets the margins of this layout element.

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.

void	setAutoMargins (QCP::MarginSides sides)
	Sets on which sides the margin shall be calculated automatically.

void	setMinimumSize (const QSize &size)
	Sets the minimum size for the inner rect of this layout element.

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.

void	setMaximumSize (const QSize &size)
	Sets the maximum size for the inner rect of this layout element.

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.

void	setMarginGroup (QCP::MarginSides sides, QCPMarginGroup *group)
	Sets the margin group of the specified margin sides.

virtual QSize	minimumSizeHint () const
	Returns the minimum size this layout element (the inner rect) may be compressed to.

virtual QSize	maximumSizeHint () const
	Returns the maximum size this layout element (the inner rect) may be expanded to.

virtual QList< QCPLayoutElement * >	elements (bool recursive) const
	Returns a list of all child elements in this layout element.

virtual double	selectTest (const QPointF &pos, bool onlySelectable, QVariant *details=0) const
	Layout elements are sensitive to events inside their outer rect.

Public Member Functions inherited from QCPLayerable
	QCPLayerable (QCustomPlot plot, QString targetLayer="", QCPLayerable parentLayerable=0)
	Creates a new QCPLayerable instance.

	~QCPLayerable ()

bool	visible () const

QCustomPlot *	parentPlot () const

QCPLayerable *	parentLayerable () const
	Returns the parent layerable of this layerable.

QCPLayer *	layer () const

bool	antialiased () const

void	setVisible (bool on)
	Sets the visibility of this layerable object.

Q_SLOT bool	setLayer (QCPLayer *layer)
	Sets the layer of this layerable object.

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.

void	setAntialiased (bool enabled)
	Sets whether this object will be drawn antialiased or not.

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.

Protected Member Functions
virtual void	applyDefaultAntialiasingHint (QCPPainter *painter) const

virtual void	mousePressEvent (QMouseEvent *event)
	This event is called, if the mouse was pressed while being inside the outer rect of this layout element.

virtual void	mouseMoveEvent (QMouseEvent *event)
	This event is called, if the mouse is moved inside the outer rect of this layout element.

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.

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.

Protected Member Functions inherited from QCPLayoutElement
virtual int	calculateAutoMargin (QCP::MarginSide side)

virtual void	mouseDoubleClickEvent (QMouseEvent *event)
	This event is called, if the mouse is double-clicked inside the outer rect of this layout element.

virtual void	draw (QCPPainter *painter)

virtual void	parentPlotInitialized (QCustomPlot *parentPlot)

Protected Member Functions inherited from QCPLayerable
virtual QCP::Interaction	selectionCategory () const

virtual QRect	clipRect () const

virtual void	selectEvent (QMouseEvent event, bool additive, const QVariant &details, bool selectionStateChanged)

virtual void	deselectEvent (bool *selectionStateChanged)

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
QCPAxis::AxisType	mType

QCPRange	mDataRange

QCPAxis::ScaleType	mDataScaleType

QCPColorGradient	mGradient

int	mBarWidth

QPointer< QCPColorScaleAxisRectPrivate >	mAxisRect

QPointer< QCPAxis >	mColorAxis

Protected Attributes inherited from QCPLayoutElement
QCPLayout *	mParentLayout

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

QCustomPlot *	mParentPlot

QPointer< QCPLayerable >	mParentLayerable

QCPLayer *	mLayer

bool	mAntialiased

Friends
class	QCPColorScaleAxisRectPrivate

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

A color scale for use with color coding data such as QCPColorMap.

This layout element can be placed on the plot to correlate a color gradient with data values. It is usually used in combination with one or multiple QCPColorMaps.

The color scale can be either horizontal or vertical, as shown in the image above. The orientation and the side where the numbers appear is controlled with setType.

Use QCPColorMap::setColorScale to connect a color map with a color scale. Once they are connected, they share their gradient, data range and data scale type (setGradient, setDataRange, setDataScaleType). Multiple color maps may be associated with a single color scale, to make them all synchronize these properties.

To have finer control over the number display and axis behaviour, you can directly access the axis. See the documentation of QCPAxis for details about configuring axes. For example, if you want to change the number of automatically generated ticks, call

colorScale->axis()->setAutoTickCount(3);

Placing a color scale next to the main axis rect works like with any other layout element:

QCPColorScale *colorScale = new QCPColorScale(customPlot);
customPlot->plotLayout()->addElement(0, 1, colorScale);
colorScale->setLabel("Some Label Text");

In this case we have placed it to the right of the default axis rect, so it wasn't necessary to call setType, since QCPAxis::atRight is already the default. The text next to the color scale can be set with setLabel.

For optimum appearance (like in the image above), it may be desirable to line up the axis rect and the borders of the color scale. Use a QCPMarginGroup to achieve this:

QCPMarginGroup *group = new QCPMarginGroup(customPlot);
colorScale->setMarginGroup(QCP::msTop|QCP::msBottom, group);
customPlot->axisRect()->setMarginGroup(QCP::msTop|QCP::msBottom, group);

Color scales are initialized with a non-zero minimum top and bottom margin (setMinimumMargins), because vertical color scales are most common and the minimum top/bottom margin makes sure it keeps some distance to the top/bottom widget border. So if you change to a horizontal color scale by setting setType to QCPAxis::atBottom or QCPAxis::atTop, you might want to also change the minimum margins accordingly, e.g. setMinimumMargins(QMargins(6, 0, 6, 0)).

Definition at line 2362 of file qcustomplot.h.

Constructor & Destructor Documentation

◆ QCPColorScale()

QCPColorScale::QCPColorScale ( QCustomPlot * parentPlot )

explicit

Constructs a new QCPColorScale.

Definition at line 13835 of file qcustomplot.cpp.

◆ ~QCPColorScale()

QCPColorScale::~QCPColorScale ( )

virtual

Definition at line 13847 of file qcustomplot.cpp.

Member Function Documentation

◆ applyDefaultAntialiasingHint()

void QCPColorScale::applyDefaultAntialiasingHint ( QCPPainter * painter ) const

protectedvirtual

Reimplemented from QCPLayoutElement.

Definition at line 14182 of file qcustomplot.cpp.

◆ axis()

QCPAxis * QCPColorScale::axis ( ) const

inline

Returns the internal QCPAxis instance of this color scale.

You can access it to alter the appearance and behaviour of the axis. QCPColorScale duplicates some properties in its interface for convenience. Those are setDataRange (QCPAxis::setRange), setDataScaleType (QCPAxis::setScaleType), and the method setLabel (QCPAxis::setLabel). As they each are connected, it does not matter whether you use the method on the QCPColorScale or on its QCPAxis.

If the type of the color scale is changed with setType, the axis returned by this method will change, too, to either the left, right, bottom or top axis, depending on which type was set.

Definition at line 2380 of file qcustomplot.h.

◆ barWidth()

int QCPColorScale::barWidth ( ) const

inline

Definition at line 2386 of file qcustomplot.h.

◆ colorMaps()

QList< QCPColorMap * > QCPColorScale::colorMaps ( ) const

Returns a list of all the color maps associated with this color scale.

Definition at line 14068 of file qcustomplot.cpp.

◆ dataRange()

QCPRange QCPColorScale::dataRange ( ) const

inline

Definition at line 2382 of file qcustomplot.h.

◆ dataRangeChanged

void QCPColorScale::dataRangeChanged ( QCPRange newRange )

signal

This signal is emitted when the data range changes.

See also: setDataRange

◆ dataScaleType()

QCPAxis::ScaleType QCPColorScale::dataScaleType ( ) const

inline

Definition at line 2383 of file qcustomplot.h.

◆ dataScaleTypeChanged

void QCPColorScale::dataScaleTypeChanged ( QCPAxis::ScaleType scaleType )

signal

This signal is emitted when the data scale type changes.

See also: setDataScaleType

◆ gradient()

QCPColorGradient QCPColorScale::gradient ( ) const

inline

Definition at line 2384 of file qcustomplot.h.

◆ gradientChanged

void QCPColorScale::gradientChanged ( QCPColorGradient newGradient )

signal

This signal is emitted when the gradient changes.

See also: setGradient

◆ label()

QString QCPColorScale::label ( ) const

Definition at line 13853 of file qcustomplot.cpp.

◆ mouseMoveEvent()

void QCPColorScale::mouseMoveEvent ( QMouseEvent * event )

protectedvirtual

This event is called, if the mouse is moved inside the outer rect of this layout element.

Reimplemented from QCPLayoutElement.

Definition at line 14199 of file qcustomplot.cpp.

◆ mousePressEvent()

void QCPColorScale::mousePressEvent ( QMouseEvent * event )

protectedvirtual

This event is called, if the mouse was pressed while being inside the outer rect of this layout element.

Reimplemented from QCPLayoutElement.

Definition at line 14188 of file qcustomplot.cpp.

◆ mouseReleaseEvent()

void QCPColorScale::mouseReleaseEvent ( QMouseEvent * event )

protectedvirtual

This event is called, if the mouse was previously pressed inside the outer rect of this layout element and is now released.

Reimplemented from QCPLayoutElement.

Definition at line 14210 of file qcustomplot.cpp.

◆ rangeDrag()

bool QCPColorScale::rangeDrag ( ) const

Definition at line 13865 of file qcustomplot.cpp.

◆ rangeZoom()

bool QCPColorScale::rangeZoom ( ) const

Definition at line 13879 of file qcustomplot.cpp.

◆ rescaleDataRange()

void QCPColorScale::rescaleDataRange ( bool onlyVisibleMaps )

Changes the data range such that all color maps associated with this color scale are fully mapped to the gradient in the data dimension.

See also: setDataRange

Definition at line 14086 of file qcustomplot.cpp.

◆ setBarWidth()

void QCPColorScale::setBarWidth ( int width )

Sets the width (or height, for horizontal color scales) the bar where the gradient is displayed will have.

Definition at line 14020 of file qcustomplot.cpp.

◆ setDataRange()

void QCPColorScale::setDataRange ( const QCPRange & dataRange )

Sets the range spanned by the color gradient and that is shown by the axis in the color scale.

It is equivalent to calling QCPColorMap::setDataRange on any of the connected color maps. It is also equivalent to directly accessing the axis and setting its range with QCPAxis::setRange.

See also: setDataScaleType, setGradient, rescaleDataRange

Definition at line 13949 of file qcustomplot.cpp.

◆ setDataScaleType()

void QCPColorScale::setDataScaleType ( QCPAxis::ScaleType scaleType )

Sets the scale type of the color scale, i.e.

whether values are linearly associated with colors or logarithmically.

It is equivalent to calling QCPColorMap::setDataScaleType on any of the connected color maps. It is also equivalent to directly accessing the axis and setting its scale type with QCPAxis::setScaleType.

See also: setDataRange, setGradient

Definition at line 13970 of file qcustomplot.cpp.

◆ setGradient()

void QCPColorScale::setGradient ( const QCPColorGradient & gradient )

Sets the color gradient that will be used to represent data values.

It is equivalent to calling QCPColorMap::setGradient on any of the connected color maps.

See also: setDataRange, setDataScaleType

Definition at line 13990 of file qcustomplot.cpp.

◆ setLabel()

void QCPColorScale::setLabel ( const QString & str )

Sets the axis label of the color scale.

This is equivalent to calling QCPAxis::setLabel on the internal axis.

Definition at line 14005 of file qcustomplot.cpp.

◆ setRangeDrag()

void QCPColorScale::setRangeDrag ( bool enabled )

Sets whether the user can drag the data range (setDataRange).

Note that QCP::iRangeDrag must be in the QCustomPlot's interactions (QCustomPlot::setInteractions) to allow range dragging.

Definition at line 14031 of file qcustomplot.cpp.

◆ setRangeZoom()

void QCPColorScale::setRangeZoom ( bool enabled )

Sets whether the user can zoom the data range (setDataRange) by scrolling the mouse wheel.

Note that QCP::iRangeZoom must be in the QCustomPlot's interactions (QCustomPlot::setInteractions) to allow range dragging.

Definition at line 14051 of file qcustomplot.cpp.

◆ setType()

void QCPColorScale::setType ( QCPAxis::AxisType type )

Sets at which side of the color scale the axis is placed, and thus also its orientation.

Note that after setting type to a different value, the axis returned by axis() will be a different one. The new axis will adopt the following properties from the previous axis: The range, scale type, log base and label.

Definition at line 13899 of file qcustomplot.cpp.

◆ type()

QCPAxis::AxisType QCPColorScale::type ( ) const

inline

Definition at line 2381 of file qcustomplot.h.

◆ update()

void QCPColorScale::update ( UpdatePhase phase )

virtual

Updates the layout element and sub-elements.

This function is automatically called before every replot by the parent layout element. It is called multiple times, once for every UpdatePhase. The phases are run through in the order of the enum values. For details about what happens at the different phases, see the documentation of UpdatePhase.

Layout elements that have child elements should call the update method of their child elements, and pass the current phase unchanged.

The default implementation executes the automatic margin mechanism in the upMargins phase. Subclasses should make sure to call the base class implementation.

Reimplemented from QCPLayoutElement.

Definition at line 14146 of file qcustomplot.cpp.

◆ wheelEvent()

void QCPColorScale::wheelEvent ( QWheelEvent * event )

protectedvirtual

This event is called, if the mouse wheel is scrolled while the cursor is inside the rect of this layout element.

Reimplemented from QCPLayoutElement.

Definition at line 14221 of file qcustomplot.cpp.

Friends And Related Symbol Documentation

◆ QCPColorScaleAxisRectPrivate

friend class QCPColorScaleAxisRectPrivate

friend

Definition at line 2435 of file qcustomplot.h.

Member Data Documentation

◆ mAxisRect

QPointer<QCPColorScaleAxisRectPrivate> QCPColorScale::mAxisRect

protected

Definition at line 2421 of file qcustomplot.h.

◆ mBarWidth

int QCPColorScale::mBarWidth

protected

Definition at line 2418 of file qcustomplot.h.

◆ mColorAxis

QPointer<QCPAxis> QCPColorScale::mColorAxis

protected

Definition at line 2422 of file qcustomplot.h.

◆ mDataRange

QCPRange QCPColorScale::mDataRange

protected

Definition at line 2415 of file qcustomplot.h.

◆ mDataScaleType

QCPAxis::ScaleType QCPColorScale::mDataScaleType

protected

Definition at line 2416 of file qcustomplot.h.

◆ mGradient

QCPColorGradient QCPColorScale::mGradient

protected

Definition at line 2417 of file qcustomplot.h.

◆ mType

QCPAxis::AxisType QCPColorScale::mType

protected

Definition at line 2414 of file qcustomplot.h.

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

icub-main/src/tools/skinManagerGui/qcustomplot.h
icub-main/src/tools/skinManagerGui/qcustomplot.cpp

Signals

Public Member Functions

Protected Member Functions

Protected Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QCPColorScale()

◆ ~QCPColorScale()

Member Function Documentation

◆ applyDefaultAntialiasingHint()

◆ axis()

◆ barWidth()

◆ colorMaps()

◆ dataRange()

◆ dataRangeChanged

◆ dataScaleType()

◆ dataScaleTypeChanged

◆ gradient()

◆ gradientChanged

◆ label()

◆ mouseMoveEvent()

◆ mousePressEvent()

◆ mouseReleaseEvent()

◆ rangeDrag()

◆ rangeZoom()

◆ rescaleDataRange()

◆ setBarWidth()

◆ setDataRange()

◆ setDataScaleType()

◆ setGradient()

◆ setLabel()

◆ setRangeDrag()

◆ setRangeZoom()

◆ setType()

◆ type()

◆ update()

◆ wheelEvent()

Friends And Related Symbol Documentation

◆ QCPColorScaleAxisRectPrivate

Member Data Documentation

◆ mAxisRect

◆ mBarWidth

◆ mColorAxis

◆ mDataRange

◆ mDataScaleType

◆ mGradient

◆ mType