Aufgabe 3: Pro-/Epilog
MouseDecoder Class Reference
Decoder for mouse codes received from the PS2Controller. More...
#include <machine/mousedecoder.h>
Collaboration diagram for MouseDecoder:
Classes | |
struct | MousePacket.__unnamed58__ |
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
-
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