MouseDecoder Class Reference

Decoder for mouse codes received from the PS2Controller. More...

#include <machine/mousedecoder.h>

Collaboration diagram for MouseDecoder:

Classes
struct	MousePacket.__unnamed__

Public Member Functions
bool	decode (unsigned char code)
	Decode the mouse packets. More...

Public Attributes
Pointer	state
	Current position and state of the mouse.

Detailed Description

Decoder for mouse codes received from the PS2Controller.

Extracts the mouse movements and button events.

Movements are reported with at least a 3-byte packet, depending on the extension (scroll wheel etc) sometimes more (but not handled here).

Bit	7	6	5	4	3	2	1	0
Byte 1	Y ovf	X ovf	Y sgn	X sgn	1	M btn	R btn	L btn
Byte 2	X Movement
Byte 3	Y Movement
Byte 4	(ignored if present)

See also

The PS/2 Mouse Interface

---

Class Documentation

MouseDecoder::MousePacket.__unnamed__

struct MouseDecoder::MousePacket.__unnamed__

Class Members
uint8_t	button_left: 1
uint8_t	button_right: 1
uint8_t	button_middle: 1
uint8_t	always_1: 1
uint8_t	sign_x: 1
uint8_t	sign_y: 1
uint8_t	overflow_x: 1
uint8_t	overflow_y: 1

Member Function Documentation

decode()

bool MouseDecoder::decode

(

unsigned char

code

)

Decode the mouse packets.

Parameters

code	Byte from Keyboard to decode

Returns

true if a 3-byte-packet was successfully decoded.

---

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

• machine/mousedecoder.h
• machine/mousedecoder.cc