VSTGUI: CVuMeter Class Reference

VSTGUI 4.10 Graphical User Interface Framework not only for VST plugins

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Public Types | Public Member Functions | List of all members
CVuMeter Class Reference
Views » Controls

`#include <cvumeter.h>`

Inheritance diagram for CVuMeter:

## Public Types
enum | Style { kHorizontal = 1 << StyleHorizontal , kVertical = 1 << StyleVertical }
using | CheckDefaultValueEventFuncT = bool (*) (CControl*, MouseDownEvent&)
using | CheckDefaultValueFuncT = bool (*) (CControl*, CButtonState)
enum class | MouseListenerCall { MouseDown , MouseMoved , MouseUp , MouseCancel }

## Public Member Functions
| CVuMeter (const CRect &size, CBitmap *onBitmap, CBitmap *offBitmap, int32_t nbLed, int32_t style=kVertical)
| CVuMeter constructor.
| CVuMeter (const CVuMeter &vuMeter)
Public Member Functions inherited from CControl
| CControl (const CRect &size, IControlListener *listener=nullptr, int32_t tag=0, CBitmap *pBackground=nullptr)
| CControl (const CControl &c)
virtual void | setValue (float val)
virtual float | getValue () const
virtual void | setValueNormalized (float val)
virtual float | getValueNormalized () const
virtual void | setMin (float val)
virtual float | getMin () const
virtual void | setMax (float val)
virtual float | getMax () const
float | getRange () const
virtual void | setOldValue (float val)
virtual float | getOldValue () const
virtual void | setDefaultValue (float val)
virtual float | getDefaultValue () const
virtual void | bounceValue ()
virtual void | valueChanged ()
| notifies listener and dependent objects
virtual void | setTag (int32_t val)
virtual int32_t | getTag () const
virtual void | beginEdit ()
virtual void | endEdit ()
bool | isEditing () const
virtual IControlListener * | getListener () const
| get main listener
virtual void | setListener (IControlListener *l)
| set main listener
void | registerControlListener (IControlListener *listener)
| register a sub listener
void | unregisterControlListener (IControlListener *listener)
| unregister a sub listener
virtual void | setWheelInc (float val)
virtual float | getWheelInc () const
bool | isDirty () const override
| check if view is dirty
bool | drawFocusOnTop () override
| draw focus before view will be drawn or afterwards
bool | getFocusPath (CGraphicsPath &outPath) override
| the graphics path will be drawn filled with the evenodd method and the color set in CFrame::setFocusColor()
Public Member Functions inherited from CView
| CView (const CRect &size)
| CView (const CView &view)
virtual void | dispatchEvent (Event &event)
| dispatch an event
virtual void | onMouseDownEvent (MouseDownEvent &event)
| called when a mouse down event occurs
virtual void | onMouseMoveEvent (MouseMoveEvent &event)
| called when a mouse move event occurs
virtual void | onMouseUpEvent (MouseUpEvent &event)
| called when a mouse up event occurs
virtual void | onMouseCancelEvent (MouseCancelEvent &event)
| called when mouse tracking should be canceled
virtual void | onMouseEnterEvent (MouseEnterEvent &event)
| called when the mouse enters this view
virtual void | onMouseExitEvent (MouseExitEvent &event)
| called when the mouse leaves this view
virtual void | onMouseWheelEvent (MouseWheelEvent &event)
| called when a mouse wheel event occurs
virtual void | onZoomGestureEvent (ZoomGestureEvent &event)
| called when a zoom gesture event occurs
virtual void | setMouseEnabled (bool bEnable=true)
| turn on/off mouse usage for this view
bool | getMouseEnabled () const
| get the state of wheather this view uses the mouse or not
virtual void | setMouseableArea (const CRect &rect)
| set the area in which the view reacts to the mouse
CRect | getMouseableArea () const
| get the area in which the view reacts to the mouse
virtual CMouseEventResult | onMouseDown (CPoint &where, const CButtonState &buttons)
| do not use any longer.
virtual CMouseEventResult | onMouseUp (CPoint &where, const CButtonState &buttons)
| do not use any longer.
virtual CMouseEventResult | onMouseMoved (CPoint &where, const CButtonState &buttons)
| do not use any longer.
virtual CMouseEventResult | onMouseCancel ()
| do not use any longer.
virtual CMouseEventResult | onMouseEntered (CPoint &where, const CButtonState &buttons)
| do not use any longer.
virtual CMouseEventResult | onMouseExited (CPoint &where, const CButtonState &buttons)
| do not use any longer.
virtual bool | onWheel (const CPoint &where, const float &distance, const CButtonState &buttons) final
virtual bool | onWheel (const CPoint &where, const CMouseWheelAxis &axis, const float &distance, const CButtonState &buttons)
CRect & | getMouseableArea (CRect &rect) const
| get the area in which the view reacts to the mouse
void | setHitTestPath (CGraphicsPath *path)
virtual bool | hitTest (const CPoint &where, const Event &event=noEvent())
| check if where hits this view
virtual bool | hitTest (const CPoint &where, const CButtonState &buttons)
bool | doDrag (const DragDescription &dragDescription, const SharedPointer< IDragCallback > &callback={})
| start a drag operation
virtual SharedPointer< IDropTarget > | getDropTarget ()
| get the drag target for drag and drop handling
void | setDropTarget (const SharedPointer< IDropTarget > &dt)
| set a custom drop target
DragResult | doDrag (IDataPackage *source, const CPoint &offset=CPoint(0, 0), CBitmap *dragBitmap=nullptr)
| a drag can only be started from within onMouseDown
virtual void | onKeyboardEvent (KeyboardEvent &event)
| called when a keyboard event is dispatched to this view
virtual int32_t | onKeyDown (VstKeyCode &keyCode)
| called if a key down event occurs and this view has focus
virtual int32_t | onKeyUp (VstKeyCode &keyCode)
| called if a key up event occurs and this view has focus
CCoord | getHeight () const
| get the height of the view
CCoord | getWidth () const
| get the width of the view
const CRect & | getViewSize () const
| read only access to view size
virtual CRect | getVisibleViewSize () const
| returns the visible size of the view
virtual void | parentSizeChanged ()
| notification that one of the views parent has changed its size
virtual CPoint & | frameToLocal (CPoint &point) const
| conversion from frame coordinates to local view coordinates
virtual CPoint & | localToFrame (CPoint &point) const
| conversion from local view coordinates to frame coordinates
virtual void | setAutosizeFlags (int32_t flags)
| set autosize flags
int32_t | getAutosizeFlags () const
| get autosize flags
virtual void | looseFocus ()
| called if view should loose focus
virtual void | takeFocus ()
| called if view should take focus
virtual bool | wantsFocus () const
| check if view supports focus
virtual void | setWantsFocus (bool state)
| set focus support on/off
bool | getAttributeSize (const CViewAttributeID id, uint32_t &outSize) const
| get the size of an attribute
bool | getAttribute (const CViewAttributeID id, const uint32_t inSize, void *outData, uint32_t &outSize) const
| get an attribute
bool | setAttribute (const CViewAttributeID id, const uint32_t inSize, const void *inData)
| set an attribute
bool | removeAttribute (const CViewAttributeID id)
| remove an attribute
template<typename T>
bool | setAttribute (const CViewAttributeID id, const T &data)
| set an attribute
template<typename T>
bool | getAttribute (const CViewAttributeID id, T &data) const
| get an attribute
virtual void | setBackground (CBitmap *background)
| set the background image of this view
CBitmap * | getBackground () const
| get the background image of this view
virtual void | setDisabledBackground (CBitmap *background)
| set background image used when the mouse is not enabled
CBitmap * | getDisabledBackground () const
| get background image used when the mouse is not enabled
CBitmap * | getDrawBackground () const
| get the bitmap which is drawn depending on the enabled state.
virtual void | setTransparency (bool val)
| set views transparent state
bool | getTransparency () const
| get views transparent state
virtual void | setAlphaValue (float alpha)
| set alpha value which will be applied when drawing this view
float | getAlphaValue () const
| get alpha value
virtual bool | removed (CView *parent)
| view is removed from parent view
virtual bool | attached (CView *parent)
| view is attached to a parent view
bool | isAttached () const
| is view attached to a parentView
void | setSubviewState (bool state)
bool | isSubview () const
CView * | getParentView () const
| get parent view
CFrame * | getFrame () const
| get frame
virtual VSTGUIEditorInterface * | getEditor () const
| get editor
void | addAnimation (IdStringPtr name, Animation::IAnimationTarget *target, Animation::ITimingFunction *timingFunction, CBaseObject *notificationObject)
void | addAnimation (IdStringPtr name, Animation::IAnimationTarget *target, Animation::ITimingFunction *timingFunction, const Animation::DoneFunction &doneFunc=nullptr, bool callDoneOnCancel=false)
void | removeAnimation (IdStringPtr name)
void | removeAllAnimations ()
void | registerViewListener (IViewListener *listener)
void | unregisterViewListener (IViewListener *listener)
void | registerViewEventListener (IViewEventListener *listener)
void | unregisterViewEventListener (IViewEventListener *listener)
void | registerViewMouseListener (IViewMouseListener *listener)
void | unregisterViewMouseListener (IViewMouseListener *listener)
CGraphicsTransform | getGlobalTransform (bool ignoreFrame=false) const
| get the active global transform for this view
template<typename T>
T & | translateToGlobal (T &t, bool ignoreFrame=false) const
| translates a local coordinate to a global one using parent transforms
template<typename T>
T | translateToGlobal (const T &t, bool ignoreFrame=false) const
| translates a local coordinate to a global one using parent transforms
template<typename T>
T & | translateToLocal (T &t, bool ignoreFrame=false) const
| translates a global coordinate to a local one using parent transforms
template<typename T>
T | translateToLocal (const T &t, bool ignoreFrame=false) const
| translates a local coordinate to a global one using parent transforms
virtual CViewContainer * | asViewContainer ()
virtual const CViewContainer * | asViewContainer () const
CMouseEventResult | callMouseListener (MouseListenerCall type, CPoint pos, CButtonState buttons)
void | callMouseListenerEnteredExited (bool mouseEntered)
CMessageResult | notify (CBaseObject *sender, IdStringPtr message) override
void | beforeDelete () override
CBaseObject * | newCopy () const override
virtual void | drawRect (CDrawContext *pContext, const CRect &updateRect)
| called if the view should draw itself
virtual bool | checkUpdate (const CRect &updateRect) const
virtual void | invalidRect (const CRect &rect)
| mark rect as invalid
virtual void | invalid ()
| mark whole view as invalid
virtual void | setVisible (bool state)
| set visibility state
bool | isVisible () const
| get visibility state
void | setWantsIdle (bool state)
| enable/disable onIdle() callback
bool | wantsIdle () const
| returns if the view wants idle callback or not
virtual bool | wantsWindowActiveStateChangeNotification () const
| whether this view wants to be informed if the window's active state changes
virtual void | onWindowActivate (bool state)
| called when the active state of the window changes
void | setTooltipText (UTF8StringPtr text)
Public Member Functions inherited from CBaseObject
| CBaseObject ()=default
| ~CBaseObject () noexcept override=default
| CBaseObject (const CBaseObject &)
CBaseObject & | operator= (const CBaseObject &)
Public Member Functions inherited from ReferenceCounted< int32_t >
| ReferenceCounted ()=default
virtual | ~ReferenceCounted () noexcept=default
| ReferenceCounted (const ReferenceCounted &)
ReferenceCounted & | operator= (const ReferenceCounted &)
| ReferenceCounted ()=default
| ReferenceCounted (const ReferenceCounted &)
virtual | ~ReferenceCounted () noexcept=default
ReferenceCounted & | operator= (const ReferenceCounted &)
void | forget () override
| decrease refcount and delete object if refcount == 0
void | remember () override
| increase refcount
virtual int32_t | getNbReference () const
| get refcount
void | forget () override
| decrease refcount and delete object if refcount == 0
void | remember () override
| increase refcount
virtual int32_t | getNbReference () const
| get refcount
Public Member Functions inherited from IFocusDrawing
virtual | ~IFocusDrawing () noexcept=default

## CVuMeter Methods
CBitmap * | offBitmap
int32_t | nbLed
int32_t | style
float | decreaseValue
CRect | rectOn
CRect | rectOff
float | getDecreaseStepValue () const
virtual void | setDecreaseStepValue (float value)
virtual CBitmap * | getOnBitmap () const
virtual CBitmap * | getOffBitmap () const
virtual void | setOnBitmap (CBitmap *bitmap)
virtual void | setOffBitmap (CBitmap *bitmap)
int32_t | getNbLed () const
void | setNbLed (int32_t nb)
void | setStyle (int32_t newStyle)
int32_t | getStyle () const
void | setDirty (bool state) override
| set the view to dirty so that it is redrawn in the next idle.
void | draw (CDrawContext *pContext) override
| called if the view should draw itself
void | setViewSize (const CRect &newSize, bool invalid=true) override
| set views size
bool | sizeToFit () override
| resize view to optimal size
void | onIdle () override
| called on idle when view wants idle
CBaseObject * | newCopy () const override
| ~CVuMeter () noexcept override

## Additional Inherited Members
static CheckDefaultValueEventFuncT | CheckDefaultValueEventFunc
| Function to check if a mouse down event should reset the value to its default value for a control.
static int32_t | kZoomModifier = kShift
| zoom modifier key, per default is the shift key
static int32_t | kDefaultValueModifier = kControl
static CheckDefaultValueFuncT | CheckDefaultValueFunc
static bool | kDirtyCallAlwaysOnMainThread = false
| if this is true, setting a view dirty will call invalid() instead of checking it in idle.
static uint32_t | idleRate = 30
| global idle rate in Hz, defaults to 30 Hz
Protected Types inherited from CView
enum | { kMouseEnabled = 1 << 0 , kTransparencyEnabled = 1 << 1 , kWantsFocus = 1 << 2 , kIsAttached = 1 << 3 , kVisible = 1 << 4 , kDirty = 1 << 5 , kWantsIdle = 1 << 6 , kIsSubview = 1 << 7 , kHasAlpha = 1 << 8 , kHasBackground = 1 << 9 , kHasDisabledBackground = 1 << 10 , kHasMouseableArea = 1 << 11 , kLastCViewFlag = 11 }
| ~CControl () noexcept override
| ~CView () noexcept override
CGraphicsPath * | getHitTestPath () const
bool | hasViewFlag (int32_t bit) const
void | setViewFlag (int32_t bit, bool state)
void | setAlphaValueNoInvalidate (float value)
void | setParentFrame (CFrame *frame)
void | setParentView (CView *parent)
static int32_t | mapVstKeyModifier (int32_t vstModifier)
IControlListener * | listener
int32_t | tag
float | value

## Member Enumeration Documentation

## ◆ Style

enum Style

Enumerator
kHorizontal |
kVertical |

## Constructor & Destructor Documentation

## ◆ CVuMeter() [1/2]

CVuMeter | ( | const CRect & | size,
|  | CBitmap * | onBitmap,
|  | CBitmap * | offBitmap,
|  | int32_t | nbLed,
|  | int32_t | style = kVertical )

CVuMeter constructor.

Parameters

  size | the size of this view
  onBitmap | TODO
  offBitmap | TODO
  nbLed | TODO
  style | kHorizontal or kVertical

## ◆ CVuMeter() [2/2]

CVuMeter | ( | const CVuMeter & | vuMeter | ) |

## ◆ ~CVuMeter()

~CVuMeter | ( |  | ) |
| overrideprotectednoexcept

## Member Function Documentation

## ◆ draw()

void draw | ( | CDrawContext * | pContext | ) |
| overridevirtual

called if the view should draw itself

Parameters

  pContext | draw context in which to draw

Implements CControl.

## ◆ getDecreaseStepValue()

float getDecreaseStepValue | ( |  | ) | const
| inline

## ◆ getNbLed()

int32_t getNbLed | ( |  | ) | const
| inline

## ◆ getOffBitmap()

virtual CBitmap * getOffBitmap | ( |  | ) | const
| inlinevirtual

## ◆ getOnBitmap()

virtual CBitmap * getOnBitmap | ( |  | ) | const
| inlinevirtual

## ◆ getStyle()

int32_t getStyle | ( |  | ) | const
| inline

## ◆ newCopy()

CBaseObject * newCopy | ( |  | ) | const
| inlineoverridevirtual

Implements CControl.

## ◆ onIdle()

void onIdle | ( |  | ) |
| overridevirtual

called on idle when view wants idle

Reimplemented from CView.

## ◆ setDecreaseStepValue()

virtual void setDecreaseStepValue | ( | float | value | ) |
| inlinevirtual

## ◆ setDirty()

void setDirty | ( | bool | val | ) |
| overridevirtual

set the view to dirty so that it is redrawn in the next idle.

Thread Safe !

Reimplemented from CControl.

## ◆ setNbLed()

void setNbLed | ( | int32_t | nb | ) |
| inline

## ◆ setOffBitmap()

void setOffBitmap | ( | CBitmap * | bitmap | ) |
| virtual

## ◆ setOnBitmap()

virtual void setOnBitmap | ( | CBitmap * | bitmap | ) |
| inlinevirtual

## ◆ setStyle()

void setStyle | ( | int32_t | newStyle | ) |
| inline

## ◆ setViewSize()

void setViewSize | ( | const CRect & | newSize,
|  | bool | doInvalid = true )
| overridevirtual

set views size

Parameters

  newSize | rect of new size of view
  doInvalid | if true set view dirty

Reimplemented from CView.

## ◆ sizeToFit()

bool sizeToFit | ( |  | ) |
| overridevirtual

resize view to optimal size

Reimplemented from CView.

## Member Data Documentation

## ◆ decreaseValue

float decreaseValue
| protected

## ◆ nbLed

int32_t nbLed
| protected

## ◆ offBitmap

CBitmap* offBitmap
| protected

## ◆ rectOff

CRect rectOff
| protected

## ◆ rectOn

CRect rectOn
| protected

## ◆ style

int32_t style
| protected

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

- cvumeter.h
- cvumeter.cpp