Aufgabe 7: Anwendung

Classes | Public Member Functions | Public Attributes | List of all members
MouseDecoder Class Reference
I/O subsystem

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

#include <machine/mousedecoder.h>

+ Collaboration diagram for MouseDecoder:

Classes

struct  MousePacket.__unnamed72__
 

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

Member Function Documentation

bool MouseDecoder::decode ( unsigned char  code)

Decode the mouse packets.

Parameters
codeByte 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: