| 32,13 → 32,6 |
|---|
| ; in: ebx -> device_data from USB layer, edi -> collection |
| ; out: eax = device-specific data or NULL on error |
| proc mouse_driver_add_device |
| ; Get screen resolution so we can calculate absolute coordinates. |
| mov eax, 14 |
| int 0x40 |
| mov [screen_y], eax |
| and [screen_y], 0xffff |
| shr eax, 16 |
| mov [screen_x], eax |
| ; Just allocate memory; no initialization needed. |
| movi eax, sizeof.mouse_device_data |
| call Kmalloc |
| 146,24 → 139,12 |
|---|
| mov [edi+mouse_device_data.hwheel], edx |
| ret |
| .absolute_x: |
| push ebx |
| mov eax, [screen_x] |
| mul edx |
| mov ebx, 0x8000 |
| div ebx |
| mov [edi+mouse_device_data.dx], eax |
| mov [edi+mouse_device_data.dx], edx |
| or [edi+mouse_device_data.buttons], 0x80000000 |
| pop ebx |
| ret |
| .absolute_y: |
| push ebx |
| mov eax, [screen_y] |
| mul edx |
| mov ebx, 0x8000 |
| div ebx |
| mov [edi+mouse_device_data.dy], eax |
| mov [edi+mouse_device_data.dy], edx |
| or [edi+mouse_device_data.buttons], 0x40000000 |
| pop ebx |
| ret |
| endp |
| |