VisibleObject Class Reference

Abstract root of all visible objects. More...

#include <menu.h>

Inheritance diagram for VisibleObject:

List of all members.

Public Member Functions
virtual void	KeyCallback (uint8_t key)
	Callback function for menu hooks.
virtual bool	Activate (void)
	Object is activated, that is it gains the focus.
virtual void	Deactivate (void)
	Object looses focus.
virtual void	Display (void)=NULL
virtual void	LoadProperties (uint8_t tag)
	Parse a tag-id.
virtual bool	Shift (uint8_t dir)
Protected Attributes
uint8_t	x
uint8_t	y
uint8_t	active

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Detailed Description

Abstract root of all visible objects.

Definition at line 36 of file menu.h.

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Member Function Documentation

bool VisibleObject::Activate (  void   )  [virtual]

Object is activated, that is it gains the focus. Derived objects will overwrite this function to install menu hooks and set keypad leds. Reimplemented in Label, Icon, Container, and Switch. Definition at line 93 of file menu.cc. Referenced by Switch::Activate(), Container::Activate(), and Container::Shift().

void VisibleObject::KeyCallback (  uint8_t  key  )  [virtual]

Callback function for menu hooks. If an object installed a menu hook then this method will be called if the appropriate key was pressed. Reimplemented in Switch. Definition at line 148 of file menu.cc.

void VisibleObject::LoadProperties (  uint8_t  tag  )  [virtual]

Parse a tag-id. This method is responsible for parsing tags coming from an application image. Custom objects should overwrite this method to analyse their specific tags. The menu loader will call this function for every tag. If a custom object does not recognize a tag then it should be passed to it's parent class. Reimplemented in Label, Icon, and Container. Definition at line 116 of file menu.cc. Referenced by Icon::LoadProperties(), Label::LoadProperties(), and Container::LoadProperties().

bool VisibleObject::Shift (  uint8_t  dir  )  [virtual]

Shift the focus up or down. Only meaningful for objects containing other objects. If the focus could not be shifted the method returns false, otherwise true. Reimplemented in Container. Definition at line 137 of file menu.cc. Referenced by Container::Shift().

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

• menu.h
• menu.cc

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