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input-linux: better capability checks, merge input_linux_event_{mouse, keyboard} 

Improve capability checks (count keys and buttons), store results.

Merge the input_linux_event_mouse and input_linux_event_keyboard
functions into one, dispatch into input_linux_handle_mouse and
input_linux_handle_keyboard depending on device capabilities.

Allow calling both handle functions, so we can handle mice which
also send key events, by routing those key events to the keyboard.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1466067800-25434-4-git-send-email-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2016-06-16 11:03:20 +02:00
parent 2330e9e7cc
commit 2e6a64cb8d
1 changed files with 47 additions and 45 deletions
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92
ui/input-linux.c
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@ -129,6 +129,17 @@ static int qemu_input_linux_to_qcode(unsigned int lnx)
return linux_to_qcode[lnx];
}
static bool linux_is_button(unsigned int lnx)
{
if (lnx < 0x100) {
return false;
}
if (lnx >= 0x160 && lnx < 0x2c0) {
return false;
}
return true;
}
#define TYPE_INPUT_LINUX "input-linux"
#define INPUT_LINUX(obj) \
OBJECT_CHECK(InputLinux, (obj), TYPE_INPUT_LINUX)
@ -153,6 +164,12 @@ struct InputLinux {
int keycount;
int wheel;
bool initialized;
bool has_rel_x;
bool has_abs_x;
int num_keys;
int num_btns;
QTAILQ_ENTRY(InputLinux) next;
};
@ -241,27 +258,6 @@ static void input_linux_handle_keyboard(InputLinux *il,
}
}
static void input_linux_event_keyboard(void *opaque)
{
InputLinux *il = opaque;
struct input_event event;
int rc;
for (;;) {
rc = read(il->fd, &event, sizeof(event));
if (rc != sizeof(event)) {
if (rc < 0 && errno != EAGAIN) {
fprintf(stderr, "%s: read: %s\n", __func__, strerror(errno));
qemu_set_fd_handler(il->fd, NULL, NULL, NULL);
close(il->fd);
}
break;
}
input_linux_handle_keyboard(il, &event);
}
}
static void input_linux_event_mouse_button(int button)
{
qemu_input_queue_btn(NULL, button, true);
@ -322,7 +318,7 @@ static void input_linux_handle_mouse(InputLinux *il, struct input_event *event)
}
}
static void input_linux_event_mouse(void *opaque)
static void input_linux_event(void *opaque)
{
InputLinux *il = opaque;
struct input_event event;
@ -339,14 +335,20 @@ static void input_linux_event_mouse(void *opaque)
break;
}
input_linux_handle_mouse(il, &event);
if (il->num_keys) {
input_linux_handle_keyboard(il, &event);
}
if (il->has_rel_x && il->num_btns) {
input_linux_handle_mouse(il, &event);
}
}
}
static void input_linux_complete(UserCreatable *uc, Error **errp)
{
InputLinux *il = INPUT_LINUX(uc);
uint32_t evtmap, relmap, absmap;
uint8_t evtmap, relmap, absmap, keymap[KEY_CNT / 8];
unsigned int i;
int rc, ver;
if (!il->evdev) {
@ -374,36 +376,36 @@ static void input_linux_complete(UserCreatable *uc, Error **errp)
}
if (evtmap & (1 << EV_REL)) {
relmap = 0;
rc = ioctl(il->fd, EVIOCGBIT(EV_REL, sizeof(relmap)), &relmap);
if (rc < 0) {
relmap = 0;
if (relmap & (1 << REL_X)) {
il->has_rel_x = true;
}
}
if (evtmap & (1 << EV_ABS)) {
ioctl(il->fd, EVIOCGBIT(EV_ABS, sizeof(absmap)), &absmap);
if (rc < 0) {
absmap = 0;
absmap = 0;
rc = ioctl(il->fd, EVIOCGBIT(EV_ABS, sizeof(absmap)), &absmap);
if (absmap & (1 << ABS_X)) {
il->has_abs_x = true;
}
}
if ((evtmap & (1 << EV_REL)) &&
(relmap & (1 << REL_X))) {
/* has relative x axis -> assume mouse */
qemu_set_fd_handler(il->fd, input_linux_event_mouse, NULL, il);
} else if ((evtmap & (1 << EV_ABS)) &&
(absmap & (1 << ABS_X))) {
/* has absolute x axis -> not supported */
error_setg(errp, "tablet/touchscreen not supported");
goto err_close;
} else if (evtmap & (1 << EV_KEY)) {
/* has keys/buttons (and no x axis) -> assume keyboard */
qemu_set_fd_handler(il->fd, input_linux_event_keyboard, NULL, il);
} else {
/* Huh? What is this? */
error_setg(errp, "unknown kind of input device");
goto err_close;
if (evtmap & (1 << EV_KEY)) {
memset(keymap, 0, sizeof(keymap));
rc = ioctl(il->fd, EVIOCGBIT(EV_KEY, sizeof(keymap)), keymap);
for (i = 0; i < KEY_CNT; i++) {
if (keymap[i / 8] & (1 << (i % 8))) {
if (linux_is_button(i)) {
il->num_btns++;
} else {
il->num_keys++;
}
}
}
}
qemu_set_fd_handler(il->fd, input_linux_event, NULL, il);
input_linux_toggle_grab(il);
QTAILQ_INSERT_TAIL(&inputs, il, next);
il->initialized = true;