Rogue Wave Views
Foundation Package API Reference Guide
Product Documentation:

Rogue Wave Views
Documentation Home
List of all members | Public Member Functions
IlvCircularGauge Class Reference

Graphic class. More...

#include <ilviews/graphics/cirgauge.h>

Inheritance diagram for IlvCircularGauge:
IlvGauge IlvSimpleGraphic IlvGraphic IlvValueInterface IlvFilledCircularGauge

Public Member Functions

 IlvCircularGauge (IlvDisplay *display, const IlvRect &drawrect, IlFloat min=0, IlFloat max=100, IlFloat value=50, IlFloat start=0, IlFloat range=180, IlvPalette *palette=0)
 Constructor. More...
 
virtual void bboxRange (IlFloat v1, IlFloat v2, IlvRect &rect, const IlvTransformer *t=0) const
 Returns the rectangle to update when the value of the gauge changes. More...
 
virtual void boundingBox (IlvRect &, const IlvTransformer *t=0) const
 Retrieves the bounding box of the graphic object. More...
 
virtual IlUInt computeNeedlePoints (IlvPoint *points, const IlvTransformer *t=0) const
 Computes the shape of the gauge handle. More...
 
virtual IlBoolean contains (const IlvPoint &p, const IlvPoint &tp, const IlvTransformer *t=0) const
 Checks whether a point is in the object. More...
 
virtual void drawValue (IlvPort *, const IlvTransformer *t=0, const IlvRegion *clip=0) const
 Performs the drawing representing the current value of the gauge. More...
 
IlFloat getRange () const
 Retrieves the angle range of the gauge. More...
 
IlFloat getStart () const
 Retrieves the starting angle of the gauge. More...
 
virtual IlFloat requestValue (const IlvPoint &, const IlvTransformer *, IlBoolean &) const
 Returns the value of the gauge associated with a given point. More...
 
void setRange (IlFloat range)
 Sets the angle range of the gauge. More...
 
void setStart (IlFloat start)
 Sets the starting angle of the gauge. More...
 
- Public Member Functions inherited from IlvGauge
 IlvGauge (IlvDisplay *display, const IlvRect &drawrect, IlFloat min=0, IlFloat max=100, IlFloat value=50, IlvPalette *palette=0)
 Constructor. More...
 
virtual void applyTransform (const IlvTransformer *t)
 Applies a transformation function to the graphic object. More...
 
virtual void draw (IlvPort *, const IlvTransformer *t=0, const IlvRegion *clip=0) const
 Draws the graphic object. More...
 
virtual void drawFocus (IlvPort *, const IlvPalette *, const IlvTransformer *t=0, const IlvRegion *clip=0) const
 Draws additional drawings for an object that has the keyboard focus. More...
 
virtual const char * getDefaultInteractor () const
 Gets the name of the default interactor for this object. More...
 
IlFloat getMax () const
 Returns the maximum value of the gauge. More...
 
IlFloat getMin () const
 Returns the minimum value of the gauge. More...
 
IlFloat getValue () const
 Returns the current value of the gauge. More...
 
virtual void invert (IlBoolean=IlFalse)
 Highlights the object. More...
 
virtual void setAlpha (IlvIntensity alpha)
 Sets the alpha value of the object. More...
 
virtual void setAntialiasingMode (IlvAntialiasingMode mode)
 Sets the anti-aliasing mode of the object. More...
 
virtual void setBackground (IlvColor *)
 Sets the background color of the object. More...
 
virtual void setForeground (IlvColor *)
 Sets the foreground color of the object. More...
 
void setMax (IlFloat max)
 Sets the maximum value of the gauge. More...
 
void setMin (IlFloat min)
 Sets the minimum value of the gauge. More...
 
virtual void setMode (IlvDrawMode)
 Sets the drawing mode of the object temporarily. More...
 
virtual void setOverwrite (IlBoolean value)
 Sets an overwrite mode that modifies how the drawing member functions operate. More...
 
virtual void setPalette (IlvPalette *)
 Sets the internal palette. More...
 
virtual void setValue (IlFloat value)
 Sets the current value of the gauge. More...
 
- Public Member Functions inherited from IlvSimpleGraphic
 IlvSimpleGraphic (IlvDisplay *display, IlvPalette *palette=0)
 Initializes a new IlvSimpleGraphic. More...
 
virtual ~IlvSimpleGraphic ()
 Destructor. More...
 
virtual void applyResources (const char *, const char *, const char *, const char *, IlvDisplay *=0)
 Applies resources on a graphic object. More...
 
IlvIntensity getAlpha () const
 Retrieves the alpha value. More...
 
IlvAntialiasingMode getAntialiasingMode () const
 Retrieves the anti-aliasing mode. More...
 
IlvArcMode getArcMode () const
 Retrieves the arc mode. More...
 
IlvColorgetBackground () const
 Retrieves the background color. More...
 
IlvColorPatterngetColorPattern () const
 Retrieves the color pattern. More...
 
virtual IlvDisplaygetDisplay () const
 Retrieves the IlvDisplay instance. More...
 
IlvFillRule getFillRule () const
 Retrieves the fill rule. More...
 
IlvFillStyle getFillStyle () const
 Retrieves the fill style. More...
 
IlvFontgetFont () const
 Retrieves the font. More...
 
IlvColorgetForeground () const
 Retrieves the foreground color. More...
 
IlvGradientPatterngetGradientPattern () const
 Retrieves the gradient pattern. More...
 
IlvLineStylegetLineStyle () const
 Retrieves the line style. More...
 
IlUShort getLineWidth () const
 Retrieves the line width. More...
 
virtual IlvLookFeelHandlergetLookFeelHandler () const
 Returns the look & feel handler used by this object. More...
 
virtual int getLookupStringInputMethod (IlvEvent &event, char *bufferReturn, int bytesBuffer, int *statusReturn)
 Gets the preedit string from an input method. More...
 
IlvDrawMode getMode () const
 Retrieves the draw mode. More...
 
IlBoolean getOverwrite () const
 Retrieves the overwrite mode. More...
 
IlvPalettegetPalette () const
 Retrieves the internal palette value. More...
 
IlvPatterngetPattern () const
 Retrieves the pattern. More...
 
virtual void registerInputMethod () const
 Controls the connection of a graphic object to an input method. More...
 
virtual void setArcMode (IlvArcMode)
 Sets the arc mode of the object. More...
 
virtual void setColorPattern (IlvColorPattern *)
 Sets the color pattern of the object. More...
 
virtual void setFillRule (IlvFillRule)
 Sets the fill rule of the object. More...
 
virtual void setFillStyle (IlvFillStyle)
 Sets the fill style of the object. More...
 
virtual void setFocusValuesInputMethod (IlUShort count, const IlvImValue *values) const
 Controls the interaction between a simple graphic object and an input method. More...
 
virtual void setFont (IlvFont *)
 Sets the font of the object. More...
 
virtual void setGradientPattern (IlvGradientPattern *)
 Sets the gradient pattern of the object. More...
 
virtual void setHolder (IlvGraphicHolder *)
 Sets the object's holder. More...
 
virtual void setLineStyle (IlvLineStyle *)
 Sets the line style of the object. More...
 
virtual void setLineWidth (IlUShort)
 Sets the line width of the object. More...
 
virtual void setPattern (IlvPattern *)
 Sets the pattern of the object. More...
 
virtual void setValuesInputMethod (IlUShort count, const IlvImValue *values) const
 Controls the interaction between a graphic object and an input method. More...
 
virtual void unRegisterInputMethod () const
 Controls the disconnection of a graphic object from an input method. More...
 
virtual void unsetFocusInputMethod () const
 Controls the interaction between a graphic object and an input method. More...
 
- Public Member Functions inherited from IlvGraphic
void addCallback (const IlSymbol *callbackType, IlvGraphicCallback callback)
 Adds a callback function to a callback list. More...
 
void addCallback (const IlSymbol *callbackType, const IlSymbol *callbackName, const IlSymbol *script=0)
 Adds a callback function to a callback list. More...
 
void addCallback (const IlSymbol *callbackType, IlvGraphicCallback callbackName, IlAny data)
 Adds a callback function to a callback list. More...
 
void addClassProperty (const IlSymbol *key, IlAny value)
 Adds a property to this object's class. More...
 
void addProperty (const IlSymbol *key, IlAny value)
 Adds a specific property to the object. More...
 
void addTag (const IlSymbol *tag)
 Adds a tag. More...
 
virtual void apply (IlvApplyObject function, IlAny arg)
 Applies a function to objects that compose another object. More...
 
IlBoolean applyAttribute (const char *attributeClassName, IlInt value, IlAny checkData=0) const
 Applies attributes. More...
 
IlBoolean applyAttribute (const char *attributeClassName, IlFloat value, IlAny checkData=0) const
 Applies attributes. More...
 
IlBoolean applyAttribute (const char *attributeClassName, const char *value, IlAny checkData=0) const
 Applies attributes. More...
 
virtual void applyReferences (IlvApplyObject function, IlAny arg)
 Applies a function to objects that are referenced by another object. More...
 
virtual void callCallbacks (const IlSymbol *callbackType)
 Calls every callback of a given type. More...
 
const char * className () const
 Returns the class name of an object. More...
 
virtual void computeFocusRegion (IlvRegion &r, const IlvTransformer *t=0) const
 Computes the region needed for the drawing of the focus. More...
 
IlBoolean contains (const IlvPoint &p) const
 Checks whether a point is in the object. More...
 
virtual IlvGraphiccopy () const =0
 Copies this object. More...
 
void draw (IlvPort *dst, const IlvTransformer *t, const IlvRect *clip) const
 Draws a graphic object. More...
 
virtual void getAccessors (const IlSymbol *const **, const IlvValueTypeClass *const **, IlUInt &) const
 Retrieves the list of available accessors of an object. More...
 
IlvGraphicCallback getCallback (const IlSymbol *callbackType) const
 Gets a callback. More...
 
IlvGraphicCallback getCallback () const
 Gets the main callback function. More...
 
IlAny getCallbackData (const IlSymbol *callbackType, IlvGraphicCallback callback) const
 Gets a callback user data. More...
 
IlAny getCallbackData (const IlSymbol *callbackType, const IlSymbol *callbackName) const
 Gets a callback user data. More...
 
IlSymbolgetCallbackName (const IlSymbol *callbackType) const
 Gets the name of a callback. More...
 
IlSymbolgetCallbackName () const
 Gets the symbol that identifies the main callback. More...
 
virtual IlUInt getCallbackTypes (const char *const **names, const IlSymbol *const **types) const
 Gets the number of register callback types for the object. More...
 
virtual IlvGraphicgetChildAt (IlUInt index) const
 Returns the sub-object of the graphic object specified by index. More...
 
virtual IlvGraphicgetChildByName (const char *name) const
 Returns the sub-object of the graphic object specified by a name. More...
 
virtual IlUInt getChildCount () const
 Returns the number of children of this graphic object. More...
 
virtual IlInt getChildIndex (const IlvGraphic *object) const
 Returns the index of the specified sub-object in this graphic object. More...
 
virtual IlvGraphic *const * getChildren (IlUInt &count) const
 Returns an array containing the sub-objects of this graphic object. More...
 
virtual IlvClassInfogetClassInfo () const
 Gets class information. More...
 
IlAny getClassProperty (const IlSymbol *key, IlBoolean checkParent=IlFalse) const
 Retrieves the indicated property value in the class of this object. More...
 
IlAny getClientData () const
 Gets client data. More...
 
virtual IlvGraphicHoldergetHolder () const
 Gets a pointer to an object's holder. More...
 
IlvInteractorgetInteractor () const
 Returns the interactor associated with the current object. More...
 
const char * getName () const
 Gets the name of the object. More...
 
IlvNamedPropertygetNamedProperty (const IlSymbol *name) const
 Gets a named property. More...
 
IlSymbolgetNextFocusGraphic () const
 Gets the next object in the focus chain. More...
 
IlSymbolgetPreviousFocusGraphic () const
 Gets the previous object in the focus chain. More...
 
IlAny getProperty (const IlSymbol *key) const
 Gets a property. More...
 
IlvSmartSetgetSmartSet () const
 Gets the smart set object containing this graphic object. More...
 
const IlSymbol *const * getTags (IlUInt &count) const
 Returns all the tags applied to this object. More...
 
IlvDim h () const
 Gets the height value of the object. More...
 
void h (IlvDim h)
 Sets the height value of the object. More...
 
IlBoolean hasCallback (const IlSymbol *callbackType, IlvGraphicCallback callback) const
 Checks whether a callback function is in a callback list. More...
 
IlBoolean hasCallback (const IlSymbol *callbackType, const IlSymbol *callbackName) const
 Checks whether a callback function is in a callback list. More...
 
IlBoolean hasCallbackData (const IlSymbol *callbackType, IlvGraphicCallback callback) const
 Checks whether a callback function has user data. More...
 
IlBoolean hasCallbackData (const IlSymbol *callbackType, const IlSymbol *callbackName) const
 Checks whether a callback function has user data. More...
 
const IlvClassInfohasClassProperty (const IlSymbol *key, IlBoolean s=IlFalse) const
 Checks for a class where the keyed property exists. More...
 
IlBoolean hasProperty (const IlSymbol *key) const
 Checks whether the object has a particular property. More...
 
IlBoolean hasTag (const IlSymbol *tag) const
 Checks whether the object has a specific tag. More...
 
virtual IlBoolean inside (const IlvRegion &r, const IlvTransformer *t=0) const
 Determines whether an object with transformation applied is inside the bounding box. More...
 
IlBoolean inside (const IlvRect &r, const IlvRect &tr, const IlvTransformer *t=0) const
 Determines whether an object with transformation applied is inside the bounding box. More...
 
IlBoolean inside (const IlvRect &r) const
 Determines whether a rectangle is inside the bounding box. More...
 
virtual IlBoolean intersects (const IlvRegion &r, const IlvTransformer *t=0) const
 Checks whether a region intersects the bounding box with transformation applied. More...
 
IlBoolean intersects (const IlvRect &r, const IlvRect &tr, const IlvTransformer *t=0) const
 Checks whether a rectangle intersects the bounding box with transformation applied. More...
 
IlBoolean intersects (const IlvRect &r) const
 Checks whether a rectangle intersects the bounding box. More...
 
IlBoolean isFirstFocusGraphic () const
 Checks whether the object is first in the focus chain. More...
 
IlBoolean isFocusable () const
 Checks whether the object can receive the keyboard focus. More...
 
IlBoolean isInSmartSet () const
 Checks whether a graphic object belongs to a smart set. More...
 
IlBoolean isLastFocusGraphic () const
 Checks whether the object is last in the focus chain. More...
 
IlBoolean isSensitive () const
 Checks whether the object is sensitive. More...
 
IlBoolean isSubtypeOf (const char *parentClass) const
 Checks whether this object's class is a subclass of a given parent class. More...
 
IlBoolean isSubtypeOf (const IlvClassInfo *classInfo) const
 Checks whether this object's class is a subclass. More...
 
virtual void move (IlvPos x, IlvPos y)
 Moves the graphic object. More...
 
void move (const IlvPoint &p)
 Moves the graphic object. More...
 
void moveResize (const IlvRect &size)
 Moves and resizes a graphic object. More...
 
virtual IlBoolean needsInputContext () const
 Indicates whether the graphic instance can connect to an input method for locale dependent input. More...
 
virtual void print (std::ostream &out, int level=0) const
 Prints for debugging purposes. More...
 
void removeCallback (const IlSymbol *callbackType, IlvGraphicCallback callback)
 Removes a callback function from a callback list. More...
 
void removeCallback (const IlSymbol *callbackType, const IlSymbol *callbackName)
 Removes a callback function from a callback list. More...
 
IlBoolean removeClassProperty (const IlSymbol *key)
 Removes a property from this object's class. More...
 
void removeInteractor ()
 Removes the interactor from the current object. More...
 
IlvNamedPropertyremoveNamedProperty (IlSymbol *name)
 Removes a named property from the object. More...
 
IlBoolean removeProperty (const IlSymbol *key)
 Removes a property from the object. More...
 
void removeTag (const IlSymbol *tag)
 Removes a tag. More...
 
IlBoolean replaceClassProperty (const IlSymbol *key, IlAny value)
 Replaces a property in this object's class. More...
 
IlBoolean replaceProperty (const IlSymbol *key, IlAny value)
 Replaces a property. More...
 
virtual void resize (IlvDim newW, IlvDim newH)
 Resizes a graphic object. More...
 
virtual void rotate (const IlvPoint &center, IlFloat angle)
 Rotates a graphic object. More...
 
virtual void scale (IlFloat zoomX, IlFloat zoomY)
 Scales the graphic object. More...
 
void setCallback (const IlSymbol *callbackType, IlvGraphicCallback callback)
 Sets a new callback. More...
 
void setCallback (const IlSymbol *callbackType, const IlSymbol *callbackName, const IlSymbol *script=0)
 Removes all previously set callbacks. More...
 
void setCallback (const IlSymbol *callbackType, IlvGraphicCallback callbackName, IlAny data)
 Removes all previously set callbacks. More...
 
void setCallback (IlvGraphicCallback callback, IlAny data)
 Sets the main callback function. More...
 
void setCallbackData (const IlSymbol *callbackType, IlvGraphicCallback callback, IlAny data)
 Sets the callback user data for a callback function. More...
 
void setCallbackData (const IlSymbol *callbackType, const IlSymbol *callbackName, IlAny data)
 Sets the callback user data for a callback function. More...
 
void setCallbackName (const IlSymbol *callbackName)
 Sets the symbol that identifies the main callback. More...
 
void setClientData (IlAny clientData)
 Sets client data. More...
 
void setFirstFocusGraphic ()
 Sets the object to be first in the focus chain.
 
void setFocusable (IlBoolean value)
 Set the focusable state of the object. More...
 
IlBoolean setInteractor (IlvInteractor *inter)
 Attaches an interactor to the current object. More...
 
IlBoolean setInteractor (const char *name)
 Attaches an interactor to this graphic object. More...
 
void setLastFocusGraphic ()
 Sets the object to be last in the focus chain.
 
virtual void setName (const char *name)
 Sets the name of the object. More...
 
IlvNamedPropertysetNamedProperty (IlvNamedProperty *property)
 Sets a named property on the object. More...
 
virtual void setNeedsInputContext (IlBoolean val)
 Specifies whether the graphic object should have locale dependent input. More...
 
void setNextFocusGraphic (IlSymbol *name)
 Sets the object to be next in the focus chain. More...
 
void setPreviousFocusGraphic (IlSymbol *name)
 Sets an object as previous in the focus chain. More...
 
void setProperty (const IlSymbol *key, IlAny value)
 Sets a property of the object to a value. More...
 
virtual void setSensitive (IlBoolean value)
 Sets the sensitivity of the object. More...
 
virtual void symmetry (IlvDirection axis)
 Flips a graphic object. More...
 
virtual void translate (IlvPos dx, IlvPos dy)
 Applies a transformation function on a graphic object. More...
 
IlvDim w () const
 Gets the width value of the object. More...
 
void w (IlvDim w)
 Sets the width value of the object. More...
 
virtual void write (IlvOutputFile &output) const =0
 Writes an object description to a file. More...
 
IlvPos x () const
 Gets the x coordinate value of the object. More...
 
void x (IlvPos x)
 Sets the x coordinate value of the object. More...
 
IlvPos y () const
 Gets the y coordinate value of the object. More...
 
void y (IlvPos y)
 Sets the y coordinate value of the object. More...
 
virtual IlBoolean zoomable () const
 Checks whether this object is zoomable. More...
 
- Public Member Functions inherited from IlvValueInterface
virtual IlBoolean applyValue (const IlvValue &value)
 Apply an accessor. More...
 
virtual IlBoolean changeValue (const IlvValue &val)
 Changes the value of an accessor. More...
 
virtual IlBoolean changeValues (const IlvValue *values, IlUShort count=0)
 Changes several accessor values simultaneously. More...
 
virtual IlvValuequeryValue (IlvValue &val) const
 Retrieves an accessor value. More...
 
virtual void queryValues (IlvValue *values, IlUShort count) const
 Retrieves multiple accessor values simultaneously. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from IlvGraphic
static void AddProperty (const IlSymbol *key, IlAny value)
 Adds a property to this object's class. More...
 
static void AddToCallbackTypeList (IlUInt &count, const char *const **names, const IlSymbol *const **types, const char *newName, const IlSymbol *newType)
 Adds a callback to a list. More...
 
static void AllowZoom (IlBoolean az)
 Sets or inhibits zooming. More...
 
static IlvClassInfoClassInfo () const
 Gets class information. More...
 
static IlAny GetProperty (const IlSymbol *key, IlBoolean checkSuperClass=IlFalse)
 Retrieves the property value associated with the key in this object's class. More...
 
static const IlvClassInfoHasProperty (const IlSymbol *key, IlBoolean checkSuperClass=IlFalse)
 Checks for the existence of a property for this object's class hierarchy. More...
 
static IlBoolean IsZoomAllowed ()
 Checks whether zoomable objects can display themselves when zooming out. More...
 
static IlvGraphicread (IlvInputFile &file, IlvPalette *palette)
 Reads an object description from a file. More...
 
static IlBoolean RemoveProperty (const IlSymbol *key)
 Removes a property from this object's class. More...
 
static IlBoolean ReplaceProperty (const IlSymbol *key, IlAny value)
 Replaces a property in this object's class. More...
 

Detailed Description

Graphic class.

Library: views

A circular gauge holds a numeric value and displays it by means of a needle that defines a partial ellipse, as in the figure below (not including scale).


- Circular gauge -

Accessors

Accessors provide a scriptable and uniform way to inspect and modify an object by using its base class methods IlvValueInterface::queryValue(), IlvValueInterface::queryValues(), IlvValueInterface::changeValue(), IlvValueInterface::changeValues(). This class inherits the accessors of its superclass IlvGauge and adds the following ones:

Name Type Equivalent methods
start Float getStart(), setStart()
range Float getRange(), setRange()

Constructor & Destructor Documentation

IlvCircularGauge::IlvCircularGauge ( IlvDisplay display,
const IlvRect drawrect,
IlFloat  min = 0,
IlFloat  max = 100,
IlFloat  value = 50,
IlFloat  start = 0,
IlFloat  range = 180,
IlvPalette palette = 0 
)

Constructor.

Parameters
displayThe display object that displays this object.
drawrectThe initial size of this object.
minThe minimum value of the gauge.
maxThe maximum value of the gauge.
valueThe initial value of the gauge.
startThe starting angle of the gauge.
rangeThe angle range of the gauge.
paletteThe palette used to draw this object.

Member Function Documentation

virtual void IlvCircularGauge::bboxRange ( IlFloat  v1,
IlFloat  v2,
IlvRect rect,
const IlvTransformer t = 0 
) const
virtual

Returns the rectangle to update when the value of the gauge changes.

Returns
The rectangular region to be updated if the value of the gauge was changing from v1 to v2.
Parameters
v1Initial value of the gauge.
v2Future value of the gauge.
rectUsed to return the rectangle to update.
tThe transformer. If it is specified, the graphic object is considered to be drawn through a transformation and the returned rectangle is expressed in the transformed coordinate system.

Implements IlvGauge.

virtual void IlvCircularGauge::boundingBox ( IlvRect bbox,
const IlvTransformer t = 0 
) const
virtual

Retrieves the bounding box of the graphic object.

Sets bbox, the rectangle reference parameter, to be the bounding box of the object. Since the object can appear within a transformed environment (for example, in a multiview editor), an IlvTransformer object occurs as an optional parameter in order to compute the bounding box in the coordinate system of the transformed environment.

Parameters
bboxThe bounding box to be set.
tA transformer value or 0 if there is no transformation.

Implements IlvGauge.

virtual IlUInt IlvCircularGauge::computeNeedlePoints ( IlvPoint points,
const IlvTransformer t = 0 
) const
virtual

Computes the shape of the gauge handle.

Computes and fills an array of points defining the shape of the needle.

The member function draw, in its default implementation, starts by calling computeNeedlePoints with a 0 value for points, to guess how many points are to be taken into account. It then calls this function again, with an array large enough to actually compute the needle shape. Then it fills the defined polygon.

Parameters
pointsThe array of points filled by this method, or 0 if only the number of points is queried.
tThe transformer used to display the gauge.
Returns
The number of points. If points is not 0, this value is also the number of points copied in points.
virtual IlBoolean IlvCircularGauge::contains ( const IlvPoint p,
const IlvPoint tp,
const IlvTransformer t = 0 
) const
virtual

Checks whether a point is in the object.

Checks whether the coordinates are located in the shape of this object. A transformation parameter allows you to use the view's coordinate system for this test.

Parameters
pThe point to be tested.
tpThe transformed point obtained by applying the transformer t to the point p.
tA transformer value, or 0 if there is no transformation.
Returns
IlTrue when the point p lies inside the outline of the object.

Reimplemented from IlvGraphic.

virtual void IlvCircularGauge::drawValue ( IlvPort dst,
const IlvTransformer t = 0,
const IlvRegion clip = 0 
) const
virtual

Performs the drawing representing the current value of the gauge.

Called by the member function draw() and interactors that connect to it. Draws the part of the gauge that indicates its value (such as the hand of a watch).

Parameters
dstThe destination port.
tThe transformer to apply to the drawing.
clipThe clipping region.

Implements IlvGauge.

Reimplemented in IlvFilledCircularGauge.

IlFloat IlvCircularGauge::getRange ( ) const

Retrieves the angle range of the gauge.

Returns
The angle range of the gauge. The sum of this angle and the starting angle indicates the maximum value of this gauge.
IlFloat IlvCircularGauge::getStart ( ) const

Retrieves the starting angle of the gauge.

Returns
The starting angle of the gauge in degrees. This angle indicates the minimum value of this gauge.
virtual IlFloat IlvCircularGauge::requestValue ( const IlvPoint point,
const IlvTransformer t,
IlBoolean connect 
) const
virtual

Returns the value of the gauge associated with a given point.

Returns
the value stored in this gauge if its moving part was at the specified location. If the point is outside the object bounding box, the function returns a reasonable value (the closest point on the object bounding box is considered).
Parameters
pointThe point. If a transformer is specified, the point is considered to be transformed, i.e. expressed in the transformed coordinate system.
tThe transformer.
connectIf IlTrue, the provided point indicates a connection to the gauge. Mostly, this means that the point is located on the moving part of the gauge.

Implements IlvGauge.

Reimplemented in IlvFilledCircularGauge.

void IlvCircularGauge::setRange ( IlFloat  range)

Sets the angle range of the gauge.

Parameters
rangeThe new angle range of the gauge.
void IlvCircularGauge::setStart ( IlFloat  start)

Sets the starting angle of the gauge.

Parameters
startThe new starting angle of this gauge.

© Copyright 2016, Rogue Wave Software, Inc. All Rights Reserved.
Rogue Wave is a registered trademark of Rogue Wave Software, Inc. in the United States and other countries. All other trademarks are the property of their respective owners.