draw the chart legend More...

#include <vtkChartLegend.h>

Inheritance diagram for vtkChartLegend:

Collaboration diagram for vtkChartLegend:

Public Types
enum	{ LEFT = 0 , CENTER , RIGHT , TOP , BOTTOM , CUSTOM }

typedef vtkContextItem	Superclass

Public Types inherited from vtkContextItem
typedef vtkAbstractContextItem	Superclass

Public Types inherited from vtkAbstractContextItem
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkChartLegend *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	SetPoint (const vtkVector2f &point)
	Set point the legend box is anchored to.

const vtkVector2f &	GetPointVector ()
	Get point the legend box is anchored to.

virtual void	SetLabelSize (int size)
	Set the point size of the label text.

virtual int	GetLabelSize ()
	Get the point size of the label text.

void	SetChart (vtkChart *chart)
	Set the chart that the legend belongs to and will draw the legend for.

vtkChart *	GetChart ()
	Get the chart that the legend belongs to and will draw the legend for.

void	Update () override
	Update the geometry of the axis.

bool	Paint (vtkContext2D *painter) override
	Paint event for the axis, called whenever the axis needs to be drawn.

virtual vtkRectf	GetBoundingRect (vtkContext2D *painter)
	Request the space the legend requires to be drawn.

vtkPen *	GetPen ()
	Get the pen used to draw the legend outline.

vtkBrush *	GetBrush ()
	Get the brush used to draw the legend background.

vtkTextProperty *	GetLabelProperties ()
	Get the vtkTextProperty for the legend's labels.

bool	Hit (const vtkContextMouseEvent &mouse) override
	Return true if the supplied x, y coordinate is inside the item.

bool	MouseMoveEvent (const vtkContextMouseEvent &mouse) override
	Mouse move event.

bool	MouseButtonPressEvent (const vtkContextMouseEvent &mouse) override
	Mouse button down event.

bool	MouseButtonReleaseEvent (const vtkContextMouseEvent &mouse) override
	Mouse button release event.


virtual void	SetPoint (float, float)
	Set point the legend box is anchored to.

void	SetPoint (float[2])
	Set point the legend box is anchored to.


virtual float *	GetPoint ()
	Get point the legend box is anchored to.

virtual void	GetPoint (float &, float &)
	Get point the legend box is anchored to.

virtual void	GetPoint (float[2])
	Get point the legend box is anchored to.


virtual void	SetHorizontalAlignment (int)
	Set the horizontal alignment of the legend to the point specified.


virtual int	GetHorizontalAlignment ()
	Get the horizontal alignment of the legend to the point specified.


virtual void	SetVerticalAlignment (int)
	Set the vertical alignment of the legend to the point specified.


virtual int	GetVerticalAlignment ()
	Get the vertical alignment of the legend to the point specified.


virtual void	SetPadding (int)
	Set the padding between legend marks, default is 5.


virtual int	GetPadding ()
	Get the padding between legend marks.


virtual void	SetSymbolWidth (int)
	Set the symbol width, default is 15.


virtual int	GetSymbolWidth ()
	Get the legend symbol width.


virtual void	SetInline (bool)
	Get/set if the legend should be drawn inline (inside the chart), or not.

virtual bool	GetInline ()
	Get/set if the legend should be drawn inline (inside the chart), or not.


virtual void	SetDragEnabled (bool)
	Get/set if the legend can be dragged with the mouse button, or not.

virtual bool	GetDragEnabled ()
	Get/set if the legend can be dragged with the mouse button, or not.


virtual void	SetCacheBounds (bool)
	Toggle whether or not this legend should attempt to cache its position and size.

virtual bool	GetCacheBounds ()
	Toggle whether or not this legend should attempt to cache its position and size.

virtual void	CacheBoundsOn ()
	Toggle whether or not this legend should attempt to cache its position and size.

virtual void	CacheBoundsOff ()
	Toggle whether or not this legend should attempt to cache its position and size.

Public Member Functions inherited from vtkContextItem
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkContextItem *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

virtual void	SetTransform (vtkContextTransform *)
	Set the transform of the item.

virtual double	GetOpacity ()
	Get the opacity of the item.

virtual void	SetOpacity (double)
	Set the opacity of the item.

Public Member Functions inherited from vtkAbstractContextItem
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkAbstractContextItem *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

virtual void	Update ()
	Perform any updates to the item that may be necessary before rendering.

virtual bool	Paint (vtkContext2D *painter)
	Paint event for the item, called whenever the item needs to be drawn.

virtual bool	PaintChildren (vtkContext2D *painter)
	Paint the children of the item, should be called whenever the children need to be rendered.

virtual void	ReleaseGraphicsResources ()
	Release graphics resources hold by the item.

vtkIdType	AddItem (vtkAbstractContextItem *item)
	Add child items to this item.

bool	RemoveItem (vtkAbstractContextItem *item)
	Remove child item from this item.

bool	RemoveItem (vtkIdType index)
	Remove child item from this item.

vtkAbstractContextItem *	GetItem (vtkIdType index)
	Get the item at the specified index.

vtkIdType	GetItemIndex (vtkAbstractContextItem *item)
	Get the index of the specified item in itemIndex.

vtkIdType	GetNumberOfItems ()
	Get the number of child items.

void	ClearItems ()
	Remove all child items from this item.

vtkIdType	Raise (vtkIdType index)
	Raises the child to the top of the item's stack.

virtual vtkIdType	StackAbove (vtkIdType index, vtkIdType under)
	Raises the child above the under sibling.

vtkIdType	Lower (vtkIdType index)
	Lowers the child to the bottom of the item's stack.

virtual vtkIdType	StackUnder (vtkIdType child, vtkIdType above)
	Lowers the child under the above sibling.

virtual bool	Hit (const vtkContextMouseEvent &mouse)
	Return true if the supplied x, y coordinate is inside the item.

virtual vtkAbstractContextItem *	GetPickedItem (const vtkContextMouseEvent &mouse)
	Return the item under the mouse.

virtual bool	MouseEnterEvent (const vtkContextMouseEvent &mouse)
	Mouse enter event.

virtual bool	MouseMoveEvent (const vtkContextMouseEvent &mouse)
	Mouse move event.

virtual bool	MouseLeaveEvent (const vtkContextMouseEvent &mouse)
	Mouse leave event.

virtual bool	MouseButtonPressEvent (const vtkContextMouseEvent &mouse)
	Mouse button down event Return true if the item holds the event, false if the event can be propagated to other items.

virtual bool	MouseButtonReleaseEvent (const vtkContextMouseEvent &mouse)
	Mouse button release event.

virtual bool	MouseDoubleClickEvent (const vtkContextMouseEvent &mouse)
	Mouse button double click event.

virtual bool	MouseWheelEvent (const vtkContextMouseEvent &mouse, int delta)
	Mouse wheel event, positive delta indicates forward movement of the wheel.

virtual bool	KeyPressEvent (const vtkContextKeyEvent &key)
	Key press event.

virtual bool	KeyReleaseEvent (const vtkContextKeyEvent &key)
	Key release event.

virtual void	SetScene (vtkContextScene *scene)
	Set the vtkContextScene for the item, always set for an item in a scene.

vtkContextScene *	GetScene ()
	Get the vtkContextScene for the item, always set for an item in a scene.

virtual void	SetParent (vtkAbstractContextItem *parent)
	Set the parent item.

vtkAbstractContextItem *	GetParent ()
	Get the parent item.

virtual vtkVector2f	MapToParent (const vtkVector2f &point)
	Maps the point to the parent coordinate system.

virtual vtkVector2f	MapFromParent (const vtkVector2f &point)
	Maps the point from the parent coordinate system.

virtual vtkVector2f	MapToScene (const vtkVector2f &point)
	Maps the point to the scene coordinate system.

virtual vtkVector2f	MapFromScene (const vtkVector2f &point)
	Maps the point from the scene coordinate system.

virtual bool	GetVisible ()
	Get the visibility of the item (should it be drawn).

virtual void	SetVisible (bool)
	Set the visibility of the item (should it be drawn).

virtual bool	GetInteractive ()
	Get if the item is interactive (should respond to mouse events).

virtual void	SetInteractive (bool)
	Set if the item is interactive (should respond to mouse events).

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on.

virtual void	DebugOff ()
	Turn debugging output off.

bool	GetDebug ()
	Get the value of the debug flag.

void	SetDebug (bool debugFlag)
	Set the value of the debug flag.

virtual void	Modified ()
	Update the modification time for this object.

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time.

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method.

int	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not.

int	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not.

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.

virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class.

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

virtual void	Delete ()
	Delete a VTK object.

virtual void	FastDelete ()
	Delete a reference to this object.

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream.

virtual void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object).

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object).

int	GetReferenceCount ()
	Return the current reference count of this object.

void	SetReferenceCount (int)
	Sets the reference count.

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space.

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

Static Public Member Functions
static vtkTypeBool	IsTypeOf (const char *type)

static vtkChartLegend *	SafeDownCast (vtkObjectBase *o)

static vtkChartLegend *	New ()
	Creates a 2D Chart object.

Static Public Member Functions inherited from vtkContextItem
static vtkTypeBool	IsTypeOf (const char *type)

static vtkContextItem *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkAbstractContextItem
static vtkTypeBool	IsTypeOf (const char *type)

static vtkAbstractContextItem *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes.

static void	SetGlobalWarningDisplay (int val)
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static int	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class.

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkChartLegend ()

	~vtkChartLegend () override

Protected Member Functions inherited from vtkContextItem
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkContextItem ()=default

	~vtkContextItem () override=default

Protected Member Functions inherited from vtkAbstractContextItem
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkAbstractContextItem ()

	~vtkAbstractContextItem () override

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events.

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events.

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
float *	Point

int	HorizontalAlignment

int	VerticalAlignment

vtkNew< vtkPen >	Pen
	The pen used to draw the legend box.

vtkNew< vtkBrush >	Brush
	The brush used to render the background of the legend.

vtkNew< vtkTextProperty >	LabelProperties
	The text properties of the labels used in the legend.

bool	DragEnabled
	Should we move the legend box around in response to the mouse drag?

bool	CacheBounds
	Should the legend attempt to avoid recalculating its position & bounds unnecessarily?

int	Button
	Last button to be pressed.

vtkTimeStamp	PlotTime

vtkTimeStamp	RectTime

vtkRectf	Rect

int	Padding
	Padding between symbol and text.

int	SymbolWidth
	Width of the symbols in pixels in the legend.

bool	Inline
	Should the legend be drawn inline in its chart?

Private *	Storage

Protected Attributes inherited from vtkContextItem
double	Opacity = 1.0

vtkContextTransform *	Transform = nullptr

Protected Attributes inherited from vtkAbstractContextItem
vtkContextScene *	Scene
	Point to the scene the item is on - can be null.

vtkAbstractContextItem *	Parent
	Point to the parent item - can be null.

vtkContextScenePrivate *	Children
	This structure provides a list of children, along with convenience functions to paint the children etc.

bool	Visible
	Store the visibility of the item (default is true).

bool	Interactive
	Store whether the item should respond to interactions (default is true).

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Detailed Description

draw the chart legend

The vtkChartLegend is drawn in screen coordinates. It is usually one of the last elements of a chart to be drawn. It renders the mark/line for each plot, and the plot labels.

Online Examples:

FunctionalBagPlot

StackedBar

Definition at line 68 of file vtkChartLegend.h.

Member Typedef Documentation

◆ Superclass

typedef vtkContextItem vtkChartLegend::Superclass

Definition at line 71 of file vtkChartLegend.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
LEFT
CENTER
RIGHT
TOP
BOTTOM
CUSTOM

Definition at line 93 of file vtkChartLegend.h.

Constructor & Destructor Documentation

◆ vtkChartLegend()

vtkChartLegend::vtkChartLegend ( )

protected

◆ ~vtkChartLegend()

vtkChartLegend::~vtkChartLegend ( )

overrideprotected

Member Function Documentation

◆ IsTypeOf()

static vtkTypeBool vtkChartLegend::IsTypeOf ( const char * type )

static

◆ IsA()

virtual vtkTypeBool vtkChartLegend::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkContextItem.

Reimplemented in vtkCategoryLegend, and vtkColorLegend.

◆ SafeDownCast()

static vtkChartLegend * vtkChartLegend::SafeDownCast ( vtkObjectBase * o )

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkChartLegend::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkContextItem.

Reimplemented in vtkCategoryLegend, and vtkColorLegend.

◆ NewInstance()

vtkChartLegend * vtkChartLegend::NewInstance ( ) const

◆ PrintSelf()

void vtkChartLegend::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkObjectBase.

Reimplemented in vtkColorLegend.

◆ New()

static vtkChartLegend * vtkChartLegend::New ( )

static

Creates a 2D Chart object.

◆ SetPoint() [1/3]

virtual void vtkChartLegend::SetPoint	(	float	,
		float
	)

virtual

Set point the legend box is anchored to.

Reimplemented in vtkColorLegend.

◆ SetPoint() [2/3]

void vtkChartLegend::SetPoint ( float [2] )

Set point the legend box is anchored to.

◆ GetPoint() [1/3]

virtual float * vtkChartLegend::GetPoint ( )

virtual

Get point the legend box is anchored to.

◆ GetPoint() [2/3]

virtual void vtkChartLegend::GetPoint	(	float &	,
		float &
	)

virtual

Get point the legend box is anchored to.

◆ GetPoint() [3/3]

virtual void vtkChartLegend::GetPoint ( float [2] )

virtual

Get point the legend box is anchored to.

◆ SetPoint() [3/3]

void vtkChartLegend::SetPoint ( const vtkVector2f & point )

Set point the legend box is anchored to.

◆ GetPointVector()

const vtkVector2f & vtkChartLegend::GetPointVector ( )

Get point the legend box is anchored to.

◆ SetHorizontalAlignment()

virtual void vtkChartLegend::SetHorizontalAlignment ( int )

virtual

Set the horizontal alignment of the legend to the point specified.

Valid values are LEFT, CENTER and RIGHT.

◆ GetHorizontalAlignment()

virtual int vtkChartLegend::GetHorizontalAlignment ( )

virtual

Get the horizontal alignment of the legend to the point specified.

◆ SetVerticalAlignment()

virtual void vtkChartLegend::SetVerticalAlignment ( int )

virtual

Set the vertical alignment of the legend to the point specified.

Valid values are TOP, CENTER and BOTTOM.

◆ GetVerticalAlignment()

virtual int vtkChartLegend::GetVerticalAlignment ( )

virtual

Get the vertical alignment of the legend to the point specified.

◆ SetPadding()

virtual void vtkChartLegend::SetPadding ( int )

virtual

Set the padding between legend marks, default is 5.

◆ GetPadding()

virtual int vtkChartLegend::GetPadding ( )

virtual

Get the padding between legend marks.

◆ SetSymbolWidth()

virtual void vtkChartLegend::SetSymbolWidth ( int )

virtual

Set the symbol width, default is 15.

◆ GetSymbolWidth()

virtual int vtkChartLegend::GetSymbolWidth ( )

virtual

Get the legend symbol width.

◆ SetLabelSize()

virtual void vtkChartLegend::SetLabelSize ( int size )

virtual

Set the point size of the label text.

◆ GetLabelSize()

virtual int vtkChartLegend::GetLabelSize ( )

virtual

Get the point size of the label text.

◆ SetInline()

virtual void vtkChartLegend::SetInline ( bool )

virtual

Get/set if the legend should be drawn inline (inside the chart), or not.

True would generally request that the chart draws it inside the chart, false would adjust the chart axes and make space to draw the axes outside.

◆ GetInline()

virtual bool vtkChartLegend::GetInline ( )

virtual

Get/set if the legend should be drawn inline (inside the chart), or not.

True would generally request that the chart draws it inside the chart, false would adjust the chart axes and make space to draw the axes outside.

◆ SetDragEnabled()

virtual void vtkChartLegend::SetDragEnabled ( bool )

virtual

Get/set if the legend can be dragged with the mouse button, or not.

True results in left click and drag causing the legend to move around the scene. False disables response to mouse events. The default is true.

◆ GetDragEnabled()

virtual bool vtkChartLegend::GetDragEnabled ( )

virtual

Get/set if the legend can be dragged with the mouse button, or not.

True results in left click and drag causing the legend to move around the scene. False disables response to mouse events. The default is true.

◆ SetChart()

void vtkChartLegend::SetChart ( vtkChart * chart )

Set the chart that the legend belongs to and will draw the legend for.

◆ GetChart()

vtkChart * vtkChartLegend::GetChart ( )

Get the chart that the legend belongs to and will draw the legend for.

◆ Update()

void vtkChartLegend::Update ( )

overridevirtual

Update the geometry of the axis.

Takes care of setting up the tick mark locations etc. Should be called by the scene before rendering.

Reimplemented from vtkAbstractContextItem.

Reimplemented in vtkColorLegend.

◆ Paint()

bool vtkChartLegend::Paint ( vtkContext2D * painter )

overridevirtual

Paint event for the axis, called whenever the axis needs to be drawn.

Reimplemented from vtkAbstractContextItem.

Reimplemented in vtkColorLegend.

◆ GetBoundingRect()

virtual vtkRectf vtkChartLegend::GetBoundingRect ( vtkContext2D * painter )

virtual

Request the space the legend requires to be drawn.

This is returned as a vtkRect4f, with the corner being the offset from Point, and the width/ height being the total width/height required by the axis. In order to ensure the numbers are correct, Update() should be called first.

Reimplemented in vtkCategoryLegend, and vtkColorLegend.

◆ GetPen()

vtkPen * vtkChartLegend::GetPen ( )

Get the pen used to draw the legend outline.

◆ GetBrush()

vtkBrush * vtkChartLegend::GetBrush ( )

Get the brush used to draw the legend background.

◆ GetLabelProperties()

vtkTextProperty * vtkChartLegend::GetLabelProperties ( )

Get the vtkTextProperty for the legend's labels.

◆ SetCacheBounds()

virtual void vtkChartLegend::SetCacheBounds ( bool )

virtual

Toggle whether or not this legend should attempt to cache its position and size.

The default value is true. If this value is set to false, the legend will recalculate its position and bounds every time it is drawn. If users will be able to zoom in or out on your legend, you may want to set this to false. Otherwise, the border around the legend may not resize appropriately.

◆ GetCacheBounds()

virtual bool vtkChartLegend::GetCacheBounds ( )

virtual

Toggle whether or not this legend should attempt to cache its position and size.

The default value is true. If this value is set to false, the legend will recalculate its position and bounds every time it is drawn. If users will be able to zoom in or out on your legend, you may want to set this to false. Otherwise, the border around the legend may not resize appropriately.

◆ CacheBoundsOn()

virtual void vtkChartLegend::CacheBoundsOn ( )

virtual

Toggle whether or not this legend should attempt to cache its position and size.

The default value is true. If this value is set to false, the legend will recalculate its position and bounds every time it is drawn. If users will be able to zoom in or out on your legend, you may want to set this to false. Otherwise, the border around the legend may not resize appropriately.

◆ CacheBoundsOff()

virtual void vtkChartLegend::CacheBoundsOff ( )

virtual

Toggle whether or not this legend should attempt to cache its position and size.

The default value is true. If this value is set to false, the legend will recalculate its position and bounds every time it is drawn. If users will be able to zoom in or out on your legend, you may want to set this to false. Otherwise, the border around the legend may not resize appropriately.

◆ Hit()

bool vtkChartLegend::Hit ( const vtkContextMouseEvent & mouse )

overridevirtual

Return true if the supplied x, y coordinate is inside the item.

Reimplemented from vtkAbstractContextItem.

◆ MouseMoveEvent()

bool vtkChartLegend::MouseMoveEvent ( const vtkContextMouseEvent & mouse )

overridevirtual

Mouse move event.

Reimplemented from vtkAbstractContextItem.

Reimplemented in vtkColorLegend.

◆ MouseButtonPressEvent()

bool vtkChartLegend::MouseButtonPressEvent ( const vtkContextMouseEvent & mouse )

overridevirtual

Mouse button down event.

Reimplemented from vtkAbstractContextItem.

◆ MouseButtonReleaseEvent()

bool vtkChartLegend::MouseButtonReleaseEvent ( const vtkContextMouseEvent & mouse )

overridevirtual

Mouse button release event.

Reimplemented from vtkAbstractContextItem.

Member Data Documentation

◆ Point

float* vtkChartLegend::Point

protected

Definition at line 284 of file vtkChartLegend.h.

◆ HorizontalAlignment

int vtkChartLegend::HorizontalAlignment

protected

Definition at line 285 of file vtkChartLegend.h.

◆ VerticalAlignment

int vtkChartLegend::VerticalAlignment

protected

Definition at line 286 of file vtkChartLegend.h.

◆ Pen

vtkNew<vtkPen> vtkChartLegend::Pen

protected

The pen used to draw the legend box.

Definition at line 291 of file vtkChartLegend.h.

◆ Brush

vtkNew<vtkBrush> vtkChartLegend::Brush

protected

The brush used to render the background of the legend.

Definition at line 296 of file vtkChartLegend.h.

◆ LabelProperties

vtkNew<vtkTextProperty> vtkChartLegend::LabelProperties

protected

The text properties of the labels used in the legend.

Definition at line 301 of file vtkChartLegend.h.

◆ DragEnabled

bool vtkChartLegend::DragEnabled

protected

Should we move the legend box around in response to the mouse drag?

Definition at line 306 of file vtkChartLegend.h.

◆ CacheBounds

bool vtkChartLegend::CacheBounds

protected

Should the legend attempt to avoid recalculating its position & bounds unnecessarily?

Definition at line 312 of file vtkChartLegend.h.

◆ Button

int vtkChartLegend::Button

protected

Last button to be pressed.

Definition at line 317 of file vtkChartLegend.h.

◆ PlotTime

vtkTimeStamp vtkChartLegend::PlotTime

protected

Definition at line 319 of file vtkChartLegend.h.

◆ RectTime

vtkTimeStamp vtkChartLegend::RectTime

protected

Definition at line 320 of file vtkChartLegend.h.

◆ Rect

vtkRectf vtkChartLegend::Rect

protected

Definition at line 322 of file vtkChartLegend.h.

◆ Padding

int vtkChartLegend::Padding

protected

Padding between symbol and text.

Definition at line 327 of file vtkChartLegend.h.

◆ SymbolWidth

int vtkChartLegend::SymbolWidth

protected

Width of the symbols in pixels in the legend.

Definition at line 332 of file vtkChartLegend.h.

◆ Inline

bool vtkChartLegend::Inline

protected

Should the legend be drawn inline in its chart?

Definition at line 337 of file vtkChartLegend.h.

◆ Storage

Private* vtkChartLegend::Storage

protected

Definition at line 341 of file vtkChartLegend.h.

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

Charts/Core/vtkChartLegend.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

Member Enumeration Documentation

◆ anonymous enum

Constructor & Destructor Documentation

◆ vtkChartLegend()

◆ ~vtkChartLegend()

Member Function Documentation

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ New()

◆ SetPoint() [1/3]

◆ SetPoint() [2/3]

◆ GetPoint() [1/3]

◆ GetPoint() [2/3]

◆ GetPoint() [3/3]

◆ SetPoint() [3/3]

◆ GetPointVector()

◆ SetHorizontalAlignment()

◆ GetHorizontalAlignment()

◆ SetVerticalAlignment()

◆ GetVerticalAlignment()

◆ SetPadding()

◆ GetPadding()

◆ SetSymbolWidth()

◆ GetSymbolWidth()

◆ SetLabelSize()

◆ GetLabelSize()

◆ SetInline()

◆ GetInline()

◆ SetDragEnabled()

◆ GetDragEnabled()

◆ SetChart()

◆ GetChart()

◆ Update()

◆ Paint()

◆ GetBoundingRect()

◆ GetPen()

◆ GetBrush()

◆ GetLabelProperties()

◆ SetCacheBounds()

◆ GetCacheBounds()

◆ CacheBoundsOn()

◆ CacheBoundsOff()

◆ Hit()

◆ MouseMoveEvent()

◆ MouseButtonPressEvent()

◆ MouseButtonReleaseEvent()

Member Data Documentation

◆ Point

◆ HorizontalAlignment

◆ VerticalAlignment

◆ Pen

◆ Brush

◆ LabelProperties

◆ DragEnabled

◆ CacheBounds

◆ Button

◆ PlotTime

◆ RectTime

◆ Rect

◆ Padding

◆ SymbolWidth

◆ Inline

◆ Storage