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weston/libweston/libinput-device.c

606 lines
17 KiB

/*
* Copyright © 2010 Intel Corporation
* Copyright © 2013 Jonas Ådahl
*
* 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 (including the
* next paragraph) 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 "config.h"
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <linux/input.h>
#include <unistd.h>
#include <fcntl.h>
#include <assert.h>
#include <libinput.h>
#include "compositor.h"
#include "libinput-device.h"
#include "shared/helpers.h"
void
evdev_led_update(struct evdev_device *device, enum weston_led weston_leds)
{
enum libinput_led leds = 0;
if (weston_leds & LED_NUM_LOCK)
leds |= LIBINPUT_LED_NUM_LOCK;
if (weston_leds & LED_CAPS_LOCK)
leds |= LIBINPUT_LED_CAPS_LOCK;
if (weston_leds & LED_SCROLL_LOCK)
leds |= LIBINPUT_LED_SCROLL_LOCK;
libinput_device_led_update(device->device, leds);
}
static void
handle_keyboard_key(struct libinput_device *libinput_device,
struct libinput_event_keyboard *keyboard_event)
{
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
int key_state =
libinput_event_keyboard_get_key_state(keyboard_event);
int seat_key_count =
libinput_event_keyboard_get_seat_key_count(keyboard_event);
/* Ignore key events that are not seat wide state changes. */
if ((key_state == LIBINPUT_KEY_STATE_PRESSED &&
seat_key_count != 1) ||
(key_state == LIBINPUT_KEY_STATE_RELEASED &&
seat_key_count != 0))
return;
notify_key(device->seat,
libinput_event_keyboard_get_time(keyboard_event),
libinput_event_keyboard_get_key(keyboard_event),
key_state, STATE_UPDATE_AUTOMATIC);
}
static bool
handle_pointer_motion(struct libinput_device *libinput_device,
struct libinput_event_pointer *pointer_event)
{
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
struct weston_pointer_motion_event event = { 0 };
uint64_t time_usec =
libinput_event_pointer_get_time_usec(pointer_event);
double dx_unaccel, dy_unaccel;
dx_unaccel = libinput_event_pointer_get_dx_unaccelerated(pointer_event);
dy_unaccel = libinput_event_pointer_get_dy_unaccelerated(pointer_event);
event = (struct weston_pointer_motion_event) {
.mask = WESTON_POINTER_MOTION_REL |
WESTON_POINTER_MOTION_REL_UNACCEL,
.time_usec = time_usec,
.dx = libinput_event_pointer_get_dx(pointer_event),
.dy = libinput_event_pointer_get_dy(pointer_event),
.dx_unaccel = dx_unaccel,
.dy_unaccel = dy_unaccel,
};
notify_motion(device->seat,
libinput_event_pointer_get_time(pointer_event),
&event);
return true;
}
static bool
handle_pointer_motion_absolute(
struct libinput_device *libinput_device,
struct libinput_event_pointer *pointer_event)
{
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
struct weston_output *output = device->output;
uint32_t time;
double x, y;
uint32_t width, height;
if (!output)
return false;
time = libinput_event_pointer_get_time(pointer_event);
width = device->output->current_mode->width;
height = device->output->current_mode->height;
x = libinput_event_pointer_get_absolute_x_transformed(pointer_event,
width);
y = libinput_event_pointer_get_absolute_y_transformed(pointer_event,
height);
weston_output_transform_coordinate(device->output, x, y, &x, &y);
notify_motion_absolute(device->seat, time, x, y);
return true;
}
static bool
handle_pointer_button(struct libinput_device *libinput_device,
struct libinput_event_pointer *pointer_event)
{
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
int button_state =
libinput_event_pointer_get_button_state(pointer_event);
int seat_button_count =
libinput_event_pointer_get_seat_button_count(pointer_event);
/* Ignore button events that are not seat wide state changes. */
if ((button_state == LIBINPUT_BUTTON_STATE_PRESSED &&
seat_button_count != 1) ||
(button_state == LIBINPUT_BUTTON_STATE_RELEASED &&
seat_button_count != 0))
return false;
notify_button(device->seat,
libinput_event_pointer_get_time(pointer_event),
libinput_event_pointer_get_button(pointer_event),
button_state);
return true;
}
static double
normalize_scroll(struct libinput_event_pointer *pointer_event,
enum libinput_pointer_axis axis)
{
enum libinput_pointer_axis_source source;
double value = 0.0;
source = libinput_event_pointer_get_axis_source(pointer_event);
/* libinput < 0.8 sent wheel click events with value 10. Since 0.8
the value is the angle of the click in degrees. To keep
backwards-compat with existing clients, we just send multiples of
the click count.
*/
switch (source) {
case LIBINPUT_POINTER_AXIS_SOURCE_WHEEL:
value = 10 * libinput_event_pointer_get_axis_value_discrete(
pointer_event,
axis);
break;
case LIBINPUT_POINTER_AXIS_SOURCE_FINGER:
case LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS:
value = libinput_event_pointer_get_axis_value(pointer_event,
axis);
break;
default:
assert(!"unhandled event source in normalize_scroll");
}
return value;
}
static int32_t
get_axis_discrete(struct libinput_event_pointer *pointer_event,
enum libinput_pointer_axis axis)
{
enum libinput_pointer_axis_source source;
source = libinput_event_pointer_get_axis_source(pointer_event);
if (source != LIBINPUT_POINTER_AXIS_SOURCE_WHEEL)
return 0;
return libinput_event_pointer_get_axis_value_discrete(pointer_event,
axis);
}
static bool
handle_pointer_axis(struct libinput_device *libinput_device,
struct libinput_event_pointer *pointer_event)
{
static int warned;
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
double vert, horiz;
int32_t vert_discrete, horiz_discrete;
enum libinput_pointer_axis axis;
struct weston_pointer_axis_event weston_event;
enum libinput_pointer_axis_source source;
uint32_t wl_axis_source;
bool has_vert, has_horiz;
has_vert = libinput_event_pointer_has_axis(pointer_event,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
has_horiz = libinput_event_pointer_has_axis(pointer_event,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL);
if (!has_vert && !has_horiz)
return false;
source = libinput_event_pointer_get_axis_source(pointer_event);
switch (source) {
case LIBINPUT_POINTER_AXIS_SOURCE_WHEEL:
wl_axis_source = WL_POINTER_AXIS_SOURCE_WHEEL;
break;
case LIBINPUT_POINTER_AXIS_SOURCE_FINGER:
wl_axis_source = WL_POINTER_AXIS_SOURCE_FINGER;
break;
case LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS:
wl_axis_source = WL_POINTER_AXIS_SOURCE_CONTINUOUS;
break;
default:
if (warned < 5) {
weston_log("Unknown scroll source %d.\n", source);
warned++;
}
return false;
}
notify_axis_source(device->seat, wl_axis_source);
if (has_vert) {
axis = LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL;
vert_discrete = get_axis_discrete(pointer_event, axis);
vert = normalize_scroll(pointer_event, axis);
weston_event.axis = WL_POINTER_AXIS_VERTICAL_SCROLL;
weston_event.value = vert;
weston_event.discrete = vert_discrete;
weston_event.has_discrete = (vert_discrete != 0);
notify_axis(device->seat,
libinput_event_pointer_get_time(pointer_event),
&weston_event);
}
if (has_horiz) {
axis = LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL;
horiz_discrete = get_axis_discrete(pointer_event, axis);
horiz = normalize_scroll(pointer_event, axis);
weston_event.axis = WL_POINTER_AXIS_HORIZONTAL_SCROLL;
weston_event.value = horiz;
weston_event.discrete = horiz_discrete;
weston_event.has_discrete = (horiz_discrete != 0);
notify_axis(device->seat,
libinput_event_pointer_get_time(pointer_event),
&weston_event);
}
return true;
}
static void
handle_touch_with_coords(struct libinput_device *libinput_device,
struct libinput_event_touch *touch_event,
int touch_type)
{
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
double x;
double y;
uint32_t width, height;
uint32_t time;
int32_t slot;
if (!device->output)
return;
time = libinput_event_touch_get_time(touch_event);
slot = libinput_event_touch_get_seat_slot(touch_event);
width = device->output->current_mode->width;
height = device->output->current_mode->height;
x = libinput_event_touch_get_x_transformed(touch_event, width);
y = libinput_event_touch_get_y_transformed(touch_event, height);
weston_output_transform_coordinate(device->output,
x, y, &x, &y);
notify_touch(device->seat, time, slot, x, y, touch_type);
}
static void
handle_touch_down(struct libinput_device *device,
struct libinput_event_touch *touch_event)
{
handle_touch_with_coords(device, touch_event, WL_TOUCH_DOWN);
}
static void
handle_touch_motion(struct libinput_device *device,
struct libinput_event_touch *touch_event)
{
handle_touch_with_coords(device, touch_event, WL_TOUCH_MOTION);
}
static void
handle_touch_up(struct libinput_device *libinput_device,
struct libinput_event_touch *touch_event)
{
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
uint32_t time = libinput_event_touch_get_time(touch_event);
int32_t slot = libinput_event_touch_get_seat_slot(touch_event);
notify_touch(device->seat, time, slot, 0, 0, WL_TOUCH_UP);
}
static void
handle_touch_frame(struct libinput_device *libinput_device,
struct libinput_event_touch *touch_event)
{
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
struct weston_seat *seat = device->seat;
notify_touch_frame(seat);
}
int
evdev_device_process_event(struct libinput_event *event)
{
struct libinput_device *libinput_device =
libinput_event_get_device(event);
struct evdev_device *device =
libinput_device_get_user_data(libinput_device);
int handled = 1;
bool need_frame = false;
switch (libinput_event_get_type(event)) {
case LIBINPUT_EVENT_KEYBOARD_KEY:
handle_keyboard_key(libinput_device,
libinput_event_get_keyboard_event(event));
break;
case LIBINPUT_EVENT_POINTER_MOTION:
need_frame = handle_pointer_motion(libinput_device,
libinput_event_get_pointer_event(event));
break;
case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
need_frame = handle_pointer_motion_absolute(
libinput_device,
libinput_event_get_pointer_event(event));
break;
case LIBINPUT_EVENT_POINTER_BUTTON:
need_frame = handle_pointer_button(libinput_device,
libinput_event_get_pointer_event(event));
break;
case LIBINPUT_EVENT_POINTER_AXIS:
need_frame = handle_pointer_axis(
libinput_device,
libinput_event_get_pointer_event(event));
break;
case LIBINPUT_EVENT_TOUCH_DOWN:
handle_touch_down(libinput_device,
libinput_event_get_touch_event(event));
break;
case LIBINPUT_EVENT_TOUCH_MOTION:
handle_touch_motion(libinput_device,
libinput_event_get_touch_event(event));
break;
case LIBINPUT_EVENT_TOUCH_UP:
handle_touch_up(libinput_device,
libinput_event_get_touch_event(event));
break;
case LIBINPUT_EVENT_TOUCH_FRAME:
handle_touch_frame(libinput_device,
libinput_event_get_touch_event(event));
break;
default:
handled = 0;
weston_log("unknown libinput event %d\n",
libinput_event_get_type(event));
}
if (need_frame)
notify_pointer_frame(device->seat);
return handled;
}
static void
notify_output_destroy(struct wl_listener *listener, void *data)
{
struct evdev_device *device =
container_of(listener,
struct evdev_device, output_destroy_listener);
struct weston_compositor *c = device->seat->compositor;
struct weston_output *output;
if (!device->output_name && !wl_list_empty(&c->output_list)) {
output = container_of(c->output_list.next,
struct weston_output, link);
evdev_device_set_output(device, output);
} else {
device->output = NULL;
}
}
/**
* The WL_CALIBRATION property requires a pixel-specific matrix to be
* applied after scaling device coordinates to screen coordinates. libinput
* can't do that, so we need to convert the calibration to the normalized
* format libinput expects.
*/
void
evdev_device_set_calibration(struct evdev_device *device)
{
struct udev *udev;
struct udev_device *udev_device = NULL;
const char *sysname = libinput_device_get_sysname(device->device);
const char *calibration_values;
uint32_t width, height;
float calibration[6];
enum libinput_config_status status;
if (!device->output)
return;
width = device->output->width;
height = device->output->height;
if (width == 0 || height == 0)
return;
/* If libinput has a pre-set calibration matrix, don't override it */
if (!libinput_device_config_calibration_has_matrix(device->device) ||
libinput_device_config_calibration_get_default_matrix(
device->device,
calibration) != 0)
return;
udev = udev_new();
if (!udev)
return;
udev_device = udev_device_new_from_subsystem_sysname(udev,
"input",
sysname);
if (!udev_device)
goto out;
calibration_values =
udev_device_get_property_value(udev_device,
"WL_CALIBRATION");
if (!calibration_values || sscanf(calibration_values,
"%f %f %f %f %f %f",
&calibration[0],
&calibration[1],
&calibration[2],
&calibration[3],
&calibration[4],
&calibration[5]) != 6)
goto out;
weston_log("Applying calibration: %f %f %f %f %f %f "
"(normalized %f %f)\n",
calibration[0],
calibration[1],
calibration[2],
calibration[3],
calibration[4],
calibration[5],
calibration[2] / width,
calibration[5] / height);
/* normalize to a format libinput can use. There is a chance of
this being wrong if the width/height don't match the device
width/height but I'm not sure how to fix that */
calibration[2] /= width;
calibration[5] /= height;
status = libinput_device_config_calibration_set_matrix(device->device,
calibration);
if (status != LIBINPUT_CONFIG_STATUS_SUCCESS)
weston_log("Failed to apply calibration.\n");
out:
if (udev_device)
udev_device_unref(udev_device);
udev_unref(udev);
}
void
evdev_device_set_output(struct evdev_device *device,
struct weston_output *output)
{
if (device->output_destroy_listener.notify) {
wl_list_remove(&device->output_destroy_listener.link);
device->output_destroy_listener.notify = NULL;
}
device->output = output;
device->output_destroy_listener.notify = notify_output_destroy;
wl_signal_add(&output->destroy_signal,
&device->output_destroy_listener);
evdev_device_set_calibration(device);
}
struct evdev_device *
evdev_device_create(struct libinput_device *libinput_device,
struct weston_seat *seat)
{
struct evdev_device *device;
device = zalloc(sizeof *device);
if (device == NULL)
return NULL;
device->seat = seat;
wl_list_init(&device->link);
device->device = libinput_device;
if (libinput_device_has_capability(libinput_device,
LIBINPUT_DEVICE_CAP_KEYBOARD)) {
weston_seat_init_keyboard(seat, NULL);
device->seat_caps |= EVDEV_SEAT_KEYBOARD;
}
if (libinput_device_has_capability(libinput_device,
LIBINPUT_DEVICE_CAP_POINTER)) {
weston_seat_init_pointer(seat);
device->seat_caps |= EVDEV_SEAT_POINTER;
}
if (libinput_device_has_capability(libinput_device,
LIBINPUT_DEVICE_CAP_TOUCH)) {
weston_seat_init_touch(seat);
device->seat_caps |= EVDEV_SEAT_TOUCH;
}
libinput_device_set_user_data(libinput_device, device);
libinput_device_ref(libinput_device);
return device;
}
void
evdev_device_destroy(struct evdev_device *device)
{
if (device->seat_caps & EVDEV_SEAT_POINTER)
weston_seat_release_pointer(device->seat);
if (device->seat_caps & EVDEV_SEAT_KEYBOARD)
weston_seat_release_keyboard(device->seat);
if (device->seat_caps & EVDEV_SEAT_TOUCH)
weston_seat_release_touch(device->seat);
if (device->output)
wl_list_remove(&device->output_destroy_listener.link);
wl_list_remove(&device->link);
libinput_device_unref(device->device);
free(device->devnode);
free(device->output_name);
free(device);
}
void
evdev_notify_keyboard_focus(struct weston_seat *seat,
struct wl_list *evdev_devices)
{
struct wl_array keys;
if (seat->keyboard_device_count == 0)
return;
wl_array_init(&keys);
notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
wl_array_release(&keys);
}