#include <Vga.h>

Inheritance diagram for HostedVga:

Collaboration diagram for HostedVga:

Public Member Functions
virtual bool	setLargestTextMode ()

virtual size_t	getNumCols ()

virtual size_t	getNumRows ()

virtual void	pokeBuffer (uint8_t *pBuffer, size_t nBufLen)

virtual void	peekBuffer (uint8_t *pBuffer, size_t nBufLen)

virtual void	moveCursor (size_t nX, size_t nY)

bool	initialise ()

	operator uint16_t * () const

Public Member Functions inherited from Vga
virtual void	flush ()

virtual void	enterPanicMode ()

virtual bool	setFramebuffer (Framebuffer *)

Private Member Functions
	HostedVga (const HostedVga &)

HostedVga &	operator= (const HostedVga &)

Static Private Member Functions
static void	printAttrAsAnsi (uint8_t attr)

static uint8_t	ansiColourFixup (uint8_t colour)

Private Attributes
size_t	m_nWidth

size_t	m_nHeight

size_t	m_CursorX

size_t	m_CursorY

uint16_t *	m_pBackbuffer

Detailed Description

Vga device abstraction.

Definition at line 29 of file kernel/machine/hosted/Vga.h.

Constructor & Destructor Documentation

◆ HostedVga()

HostedVga::HostedVga ( )

Definition at line 25 of file hosted/Vga.cc.

◆ ~HostedVga()

HostedVga::~HostedVga ( )

virtual

Definition at line 28 of file hosted/Vga.cc.

Member Function Documentation

◆ ansiColourFixup()

uint8_t HostedVga::ansiColourFixup ( uint8_t colour )

staticprivate

Fix up the given colour into a proper ANSI colour.

Definition at line 97 of file hosted/Vga.cc.

Referenced by printAttrAsAnsi().

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◆ getNumCols()

virtual size_t HostedVga::getNumCols ( )

inlinevirtual

Returns: The number of columns in the current mode.

Implements Vga.

Definition at line 43 of file kernel/machine/hosted/Vga.h.

References m_nWidth.

◆ getNumRows()

virtual size_t HostedVga::getNumRows ( )

inlinevirtual

Returns: The number of rows in the current mode.

Implements Vga.

Definition at line 50 of file kernel/machine/hosted/Vga.h.

References m_nHeight.

◆ initialise()

bool HostedVga::initialise ( )

Definition at line 86 of file hosted/Vga.cc.

◆ moveCursor()

void HostedVga::moveCursor	(	size_t	nX,
		size_t	nY
	)

virtual

Moves the cursor to the position specified by the parameters.

Parameters

nX	The column to move to.
nY	The row to move to.

Implements Vga.

Definition at line 77 of file hosted/Vga.cc.

References m_CursorX, m_CursorY, and m_pBackbuffer.

Referenced by pokeBuffer().

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◆ operator uint16_t *()

HostedVga::operator uint16_t * ( ) const

inlinevirtual

Implements Vga.

Definition at line 86 of file kernel/machine/hosted/Vga.h.

◆ peekBuffer()

void HostedVga::peekBuffer	(	uint8_t *	pBuffer,
		size_t	nBufLen
	)

virtual

Copies the current framebuffer into the given buffer.

The buffer is assumed to be in the correct format for directly copying from video memory. This will obviously depend on the current mode (text/graphical) as well as resolution and bits per pixel (graphics mode only).

Parameters

pBuffer	A pointer to the buffer.
nBufLen	The length of pBuffer.

Implements Vga.

Definition at line 67 of file hosted/Vga.cc.

References m_nWidth, and m_pBackbuffer.

◆ pokeBuffer()

void HostedVga::pokeBuffer	(	uint8_t *	pBuffer,
		size_t	nBufLen
	)

virtual

Copies the given buffer into video memory, replacing the current framebuffer.

The buffer is assumed to be in the correct format for directly copying into video memory. This will obviously depend on the current mode (text/graphical) as well as resolution and bits per pixel (graphics mode only).

Parameters