| |
| #include "../kernel.h" |
|
|
| #define MAX_EVENTS 256 |
| #define KEY_ESC 1 |
| #define KEY_ENTER 28 |
| #define KEY_SHIFT 42 |
| #define KEY_CTRL 29 |
| #define KEY_ALT 56 |
| #define KEY_UP 72 |
| #define KEY_DOWN 80 |
| #define KEY_LEFT 75 |
| #define KEY_RIGHT 77 |
|
|
| typedef struct { u8 type, code; u32 value; } InputEvent; |
| static InputEvent ev_buf[MAX_EVENTS]; |
| static u32 ev_head, ev_tail; |
| static u8 key_state[128]; |
| static u32 mouse_x, mouse_y; |
| static u8 mouse_btn; |
|
|
| void input_init(void) { ev_head=0;ev_tail=0;mouse_x=512;mouse_y=384; for(u32 i=0;i<128;i++)key_state[i]=0; } |
|
|
| void input_push(u8 type, u8 code, u32 value) { |
| ev_buf[ev_tail].type=type; ev_buf[ev_tail].code=code; ev_buf[ev_tail].value=value; |
| ev_tail=(ev_tail+1)%MAX_EVENTS; |
| if(ev_tail==ev_head) ev_head=(ev_head+1)%MAX_EVENTS; |
| } |
|
|
| int input_pop(InputEvent* ev) { |
| if(ev_head==ev_tail) return 0; |
| *ev=ev_buf[ev_head]; ev_head=(ev_head+1)%MAX_EVENTS; return 1; |
| } |
|
|
| void kb_handler(u8 sc) { |
| u8 pressed=!(sc&0x80); u8 key=sc&0x7F; |
| key_state[key]=pressed; |
| input_push(1, key, pressed); |
| } |
|
|
| void mouse_handler(u8 dx, u8 dy, u8 btn) { |
| mouse_x=(u32)((i32)mouse_x+dx); if(mouse_x>1023)mouse_x=1023; |
| mouse_y=(u32)((i32)mouse_y-dy); if(mouse_y>767)mouse_y=767; |
| mouse_btn=btn; |
| } |
|
|
| u8 input_keydown(u8 key) { return key<128?key_state[key]:0; } |
| u32 input_mouse_x(void) { return mouse_x; } |
| u32 input_mouse_y(void) { return mouse_y; } |
| u8 input_mouse_btn(void) { return mouse_btn; } |
|
|
