TextMode::Attribute Union Reference

Structure of a character attribute consists of 4 bit fore- and 3 bit background color, and a single blink bit. More...

#include <machine/textmode.h>

Classes
struct	[struct].__unnamed0__

Public Member Functions
	Attribute (Color foreground=LIGHT_GREY, Color background=BLACK, bool blink=false)
	Attribute constructor (with default values).

Public Attributes
struct
uint8_t	value
	combined value

Detailed Description

Structure of a character attribute consists of 4 bit fore- and 3 bit background color, and a single blink bit.

Bit fields can notably simplify the access and code readability.

Note

Type punning is indeed undefined behavior in C++. However, gcc explicitly allows this construct as a language extension. Some compilers (other than gcc might allow this feature only by disabling strict aliasing (-fno-strict-aliasing). In StuBS we use this feature extensively due to the improved code readability.

Constructor & Destructor Documentation

Attribute()

TextMode::Attribute::Attribute ( Color foreground = LIGHT_GREY, Color background = BLACK, bool blink = false )

inlineexplicit

Attribute constructor (with default values).

Todo

Complete constructor

Parameters

foreground	Foreground color (Default: LIGHT_GREY)
background	Background color (Default: BLACK)
blink	Blink if true (default: no blinking)

Member Data Documentation

@176371033372260241142110053060245046103047131106

struct TextMode::Attribute::[struct].__unnamed0__ TextMode::Attribute

value

uint8_t TextMode::Attribute::value

combined value

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

• machine/textmode.h