| 32,6 → 32,13 |
|---|
| ; 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 |
| 111,7 → 118,7 |
|---|
| ; 3. This is x moving. For relative fields, store the value in the state. |
| ; Pass absolute field to the default handler. |
| test byte [esi+report_field_group.flags], HID_FIELD_RELATIVE |
| jz .unclaimed |
| jz .relative_x |
| mov [edi+mouse_device_data.dx], edx |
| ret |
| .y: |
| 121,7 → 128,7 |
|---|
| ; increasing from top to bottom. |
| ; Pass absolute fields to the default handler. |
| test byte [esi+report_field_group.flags], HID_FIELD_RELATIVE |
| jz .unclaimed |
| jz .relative_y |
| neg edx |
| mov [edi+mouse_device_data.dy], edx |
| ret |
| 138,6 → 145,26 |
|---|
| jz .unclaimed |
| mov [edi+mouse_device_data.hwheel], edx |
| ret |
| .relative_x: |
| push ebx |
| mov eax, [screen_x] |
| mul edx |
| mov ebx, 0x8000 |
| div ebx |
| mov [edi+mouse_device_data.dx], eax |
| or [edi+mouse_device_data.buttons], 0x80000000 |
| pop ebx |
| ret |
| .relative_y: |
| push ebx |
| mov eax, [screen_y] |
| mul edx |
| mov ebx, 0x8000 |
| div ebx |
| mov [edi+mouse_device_data.dy], eax |
| or [edi+mouse_device_data.buttons], 0x40000000 |
| pop ebx |
| ret |
| endp |
| |
| ; This procedure is called when HID layer ends processing a new input packet |