This makes the code more declarative, and avoids duplicating the information on all instances. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
191 lines
5.4 KiB
C
191 lines
5.4 KiB
C
/*
|
|
* QEMU Microsoft serial mouse emulation
|
|
*
|
|
* Copyright (c) 2008 Lubomir Rintel
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "sysemu/char.h"
|
|
#include "ui/console.h"
|
|
#include "ui/input.h"
|
|
|
|
#define MSMOUSE_LO6(n) ((n) & 0x3f)
|
|
#define MSMOUSE_HI2(n) (((n) & 0xc0) >> 6)
|
|
|
|
typedef struct {
|
|
CharDriverState *chr;
|
|
QemuInputHandlerState *hs;
|
|
int axis[INPUT_AXIS__MAX];
|
|
bool btns[INPUT_BUTTON__MAX];
|
|
bool btnc[INPUT_BUTTON__MAX];
|
|
uint8_t outbuf[32];
|
|
int outlen;
|
|
} MouseState;
|
|
|
|
static void msmouse_chr_accept_input(CharDriverState *chr)
|
|
{
|
|
MouseState *mouse = chr->opaque;
|
|
int len;
|
|
|
|
len = qemu_chr_be_can_write(chr);
|
|
if (len > mouse->outlen) {
|
|
len = mouse->outlen;
|
|
}
|
|
if (!len) {
|
|
return;
|
|
}
|
|
|
|
qemu_chr_be_write(chr, mouse->outbuf, len);
|
|
mouse->outlen -= len;
|
|
if (mouse->outlen) {
|
|
memmove(mouse->outbuf, mouse->outbuf + len, mouse->outlen);
|
|
}
|
|
}
|
|
|
|
static void msmouse_queue_event(MouseState *mouse)
|
|
{
|
|
unsigned char bytes[4] = { 0x40, 0x00, 0x00, 0x00 };
|
|
int dx, dy, count = 3;
|
|
|
|
dx = mouse->axis[INPUT_AXIS_X];
|
|
mouse->axis[INPUT_AXIS_X] = 0;
|
|
|
|
dy = mouse->axis[INPUT_AXIS_Y];
|
|
mouse->axis[INPUT_AXIS_Y] = 0;
|
|
|
|
/* Movement deltas */
|
|
bytes[0] |= (MSMOUSE_HI2(dy) << 2) | MSMOUSE_HI2(dx);
|
|
bytes[1] |= MSMOUSE_LO6(dx);
|
|
bytes[2] |= MSMOUSE_LO6(dy);
|
|
|
|
/* Buttons */
|
|
bytes[0] |= (mouse->btns[INPUT_BUTTON_LEFT] ? 0x20 : 0x00);
|
|
bytes[0] |= (mouse->btns[INPUT_BUTTON_RIGHT] ? 0x10 : 0x00);
|
|
if (mouse->btns[INPUT_BUTTON_MIDDLE] ||
|
|
mouse->btnc[INPUT_BUTTON_MIDDLE]) {
|
|
bytes[3] |= (mouse->btns[INPUT_BUTTON_MIDDLE] ? 0x20 : 0x00);
|
|
mouse->btnc[INPUT_BUTTON_MIDDLE] = false;
|
|
count = 4;
|
|
}
|
|
|
|
if (mouse->outlen <= sizeof(mouse->outbuf) - count) {
|
|
memcpy(mouse->outbuf + mouse->outlen, bytes, count);
|
|
mouse->outlen += count;
|
|
} else {
|
|
/* queue full -> drop event */
|
|
}
|
|
}
|
|
|
|
static void msmouse_input_event(DeviceState *dev, QemuConsole *src,
|
|
InputEvent *evt)
|
|
{
|
|
MouseState *mouse = (MouseState *)dev;
|
|
InputMoveEvent *move;
|
|
InputBtnEvent *btn;
|
|
|
|
switch (evt->type) {
|
|
case INPUT_EVENT_KIND_REL:
|
|
move = evt->u.rel.data;
|
|
mouse->axis[move->axis] += move->value;
|
|
break;
|
|
|
|
case INPUT_EVENT_KIND_BTN:
|
|
btn = evt->u.btn.data;
|
|
mouse->btns[btn->button] = btn->down;
|
|
mouse->btnc[btn->button] = true;
|
|
break;
|
|
|
|
default:
|
|
/* keep gcc happy */
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void msmouse_input_sync(DeviceState *dev)
|
|
{
|
|
MouseState *mouse = (MouseState *)dev;
|
|
|
|
msmouse_queue_event(mouse);
|
|
msmouse_chr_accept_input(mouse->chr);
|
|
}
|
|
|
|
static int msmouse_chr_write (struct CharDriverState *s, const uint8_t *buf, int len)
|
|
{
|
|
/* Ignore writes to mouse port */
|
|
return len;
|
|
}
|
|
|
|
static void msmouse_chr_free(struct CharDriverState *chr)
|
|
{
|
|
MouseState *mouse = chr->opaque;
|
|
|
|
qemu_input_handler_unregister(mouse->hs);
|
|
g_free(mouse);
|
|
}
|
|
|
|
static QemuInputHandler msmouse_handler = {
|
|
.name = "QEMU Microsoft Mouse",
|
|
.mask = INPUT_EVENT_MASK_BTN | INPUT_EVENT_MASK_REL,
|
|
.event = msmouse_input_event,
|
|
.sync = msmouse_input_sync,
|
|
};
|
|
|
|
static CharDriverState *qemu_chr_open_msmouse(const CharDriver *driver,
|
|
const char *id,
|
|
ChardevBackend *backend,
|
|
ChardevReturn *ret,
|
|
bool *be_opened,
|
|
Error **errp)
|
|
{
|
|
ChardevCommon *common = backend->u.msmouse.data;
|
|
MouseState *mouse;
|
|
CharDriverState *chr;
|
|
|
|
chr = qemu_chr_alloc(driver, common, errp);
|
|
if (!chr) {
|
|
return NULL;
|
|
}
|
|
*be_opened = false;
|
|
|
|
mouse = g_new0(MouseState, 1);
|
|
mouse->hs = qemu_input_handler_register((DeviceState *)mouse,
|
|
&msmouse_handler);
|
|
|
|
mouse->chr = chr;
|
|
chr->opaque = mouse;
|
|
|
|
return chr;
|
|
}
|
|
|
|
static void register_types(void)
|
|
{
|
|
static const CharDriver driver = {
|
|
.kind = CHARDEV_BACKEND_KIND_MSMOUSE,
|
|
.create = qemu_chr_open_msmouse,
|
|
.chr_write = msmouse_chr_write,
|
|
.chr_accept_input = msmouse_chr_accept_input,
|
|
.chr_free = msmouse_chr_free,
|
|
};
|
|
register_char_driver(&driver);
|
|
}
|
|
|
|
type_init(register_types);
|