CUISlider Class Reference

CUISlider is a scroll bar that user can move up or down More...

#include <CUISlider.h>

Inheritance diagram for CUISlider:

List of all members.

Public Types
typedef unsigned int	EUISliderOptions
	Options set.
enum	EUISliderOption { KVertical = 0x01, KHorizontal = 0x02, KTransparentDraw = 0x04, KDefaultOptions = KHorizontal }
	Drawing and behavior options. More...
Public Member Functions
	CUISlider (const CUIRect &aRectangle, MUIWidgetEvents *aObserver=NULL, unsigned int aMinValue=0, unsigned int aMaxValue=100)
	Constructs CUISlider object.
virtual void	Draw ()
	Draws this widget on the virtual screen.
virtual bool	HandlePenEvent (MInputReader::TTouchEventData &aData)
	Reacts on touch screen event.
virtual bool	HandleKeyEvent (MInputReader::TKeyEventData &aData)
	Reacts on keyboard or remote control input event.
Public Attributes
unsigned int	iMinValue
unsigned int	iMaxValue
unsigned int	iValue
unsigned int	iStep
EUISliderOptions	iOptions
CDesktop::TColor	iBackground

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Detailed Description

CUISlider is a scroll bar that user can move up or down

Slider is associated with an unsigned integer value. Its iObserver is called every time the value is changed

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Member Enumeration Documentation

enum CUISlider::EUISliderOption

Drawing and behavior options. Enumeration values: KVertical  Defines a vertically drawn CUISlider KHorizontal  Defines a horizontally drawn CUISlider KTransparentDraw  Draw the slider transparently over its owner KDefaultOptions  Default options

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Constructor & Destructor Documentation

CUISlider::CUISlider (  const CUIRect &  aRectangle, MUIWidgetEvents *  aObserver = NULL, unsigned int  aMinValue = 0, unsigned int  aMaxValue = 100 )

Constructs CUISlider object. Parameters: aRectangle  Absolute CUISlider position and size aObserver  An optional observer for events, can be NULL aMinValue  Minimal allowed iValue value aMaxValue  Maximal allowed iValue value

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Member Function Documentation

virtual void CUISlider::Draw (   )  [virtual]

Draws this widget on the virtual screen. The library does not provide any clipping mechanism, so the widget is completely responsible for drawing in its iRectangle. If the widget should be drawn fully or partially transparently over its iParent, it should call iParent->RestoreBackground() for every transparent region Implements MUIWidget.

virtual bool CUISlider::HandleKeyEvent (  MInputReader::TKeyEventData &  aData  )  [virtual]

Reacts on keyboard or remote control input event. It is permitted to re-draw this or other widgets as a response on this event. In this case the CUIEventLoop flushes the virtual screen automatically to ensure that it is displayed. In some cases it's necessary to completely re-draw the whole screen. If it's needed, the handling code should set CUIEventLoop::GetEventLoop().iForceFullRedraw to true. Warning: The full screen redraw could be very time consuming and should be used carefully Implements MUIWidget.

virtual bool CUISlider::HandlePenEvent (  MInputReader::TTouchEventData &  aData  )  [virtual]

Reacts on touch screen event. Returns true if the event was consumed. It is permitted to re-draw this or other widgets as a response on this event. In this case the CUIEventLoop flushes the virtual screen automatically to ensure that it is displayed. In some cases it's necessary to completely re-draw the whole screen. If it's needed, the handling code should set CUIEventLoop::GetEventLoop().iForceFullRedraw to true. Note that because of nature of the touchscreen, the widget could receive PenUp event (aData.iPressure == 0) with the aData.iX and aData.iY pointing outside of iRectangle of this widget. In this case the widget should not react for such an event or perform necessary cleanup if it has reacted on PenDown event (aData.iPressure != 0 ). Warning: The full screen redraw could be very time consuming and should be used carefully Implements MUIWidget.

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Member Data Documentation

CDesktop::TColor CUISlider::iBackground

Background color. If zero, button background from the color scheme is used

unsigned int CUISlider::iMaxValue

Maximal allowed value

unsigned int CUISlider::iMinValue

Minimal allowed value

EUISliderOptions CUISlider::iOptions

CUISlider options

unsigned int CUISlider::iStep

iValue increment or decrement value for keyboard operations

unsigned int CUISlider::iValue

Current value

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

• CUISlider.h

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