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libinput/src/evdev.c
Peter Hutterer f2f616a1fc touchpad: mark the Apple onebutton touchpad as clickfinger-default 
We don't initialize click methods on devices with physical buttons. This model
is a special case, it's not a clickpad but it only has one button (because one
button is all you ever need and whatnot).

https://bugs.freedesktop.org/show_bug.cgi?id=99283

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2017-02-09 09:26:07 +10:00

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/*
* Copyright © 2010 Intel Corporation
* Copyright © 2013 Jonas Ådahl
* Copyright © 2013-2015 Red Hat, Inc.
*
* 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 <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
#include "linux/input.h"
#include <unistd.h>
#include <fcntl.h>
#include <mtdev-plumbing.h>
#include <assert.h>
#include <time.h>
#include <math.h>
#include "libinput.h"
#include "evdev.h"
#include "filter.h"
#include "libinput-private.h"
#if HAVE_LIBWACOM
#include <libwacom/libwacom.h>
#endif
#define DEFAULT_WHEEL_CLICK_ANGLE 15
#define DEFAULT_MIDDLE_BUTTON_SCROLL_TIMEOUT ms2us(200)
enum evdev_key_type {
EVDEV_KEY_TYPE_NONE,
EVDEV_KEY_TYPE_KEY,
EVDEV_KEY_TYPE_BUTTON,
};
enum evdev_device_udev_tags {
EVDEV_UDEV_TAG_INPUT = (1 << 0),
EVDEV_UDEV_TAG_KEYBOARD = (1 << 1),
EVDEV_UDEV_TAG_MOUSE = (1 << 2),
EVDEV_UDEV_TAG_TOUCHPAD = (1 << 3),
EVDEV_UDEV_TAG_TOUCHSCREEN = (1 << 4),
EVDEV_UDEV_TAG_TABLET = (1 << 5),
EVDEV_UDEV_TAG_JOYSTICK = (1 << 6),
EVDEV_UDEV_TAG_ACCELEROMETER = (1 << 7),
EVDEV_UDEV_TAG_TABLET_PAD = (1 << 8),
EVDEV_UDEV_TAG_POINTINGSTICK = (1 << 9),
EVDEV_UDEV_TAG_TRACKBALL = (1 << 10),
EVDEV_UDEV_TAG_SWITCH = (1 << 11),
};
struct evdev_udev_tag_match {
const char *name;
enum evdev_device_udev_tags tag;
};
static const struct evdev_udev_tag_match evdev_udev_tag_matches[] = {
{"ID_INPUT", EVDEV_UDEV_TAG_INPUT},
{"ID_INPUT_KEYBOARD", EVDEV_UDEV_TAG_KEYBOARD},
{"ID_INPUT_KEY", EVDEV_UDEV_TAG_KEYBOARD},
{"ID_INPUT_MOUSE", EVDEV_UDEV_TAG_MOUSE},
{"ID_INPUT_TOUCHPAD", EVDEV_UDEV_TAG_TOUCHPAD},
{"ID_INPUT_TOUCHSCREEN", EVDEV_UDEV_TAG_TOUCHSCREEN},
{"ID_INPUT_TABLET", EVDEV_UDEV_TAG_TABLET},
{"ID_INPUT_TABLET_PAD", EVDEV_UDEV_TAG_TABLET_PAD},
{"ID_INPUT_JOYSTICK", EVDEV_UDEV_TAG_JOYSTICK},
{"ID_INPUT_ACCELEROMETER", EVDEV_UDEV_TAG_ACCELEROMETER},
{"ID_INPUT_POINTINGSTICK", EVDEV_UDEV_TAG_POINTINGSTICK},
{"ID_INPUT_TRACKBALL", EVDEV_UDEV_TAG_TRACKBALL},
{"ID_INPUT_SWITCH", EVDEV_UDEV_TAG_SWITCH},
/* sentinel value */
{ 0 },
};
static inline bool
parse_udev_flag(struct evdev_device *device,
struct udev_device *udev_device,
const char *property)
{
const char *val;
val = udev_device_get_property_value(udev_device, property);
if (!val)
return false;
if (streq(val, "1"))
return true;
if (!streq(val, "0"))
log_error(evdev_libinput_context(device),
"%s: property %s has invalid value '%s'\n",
evdev_device_get_sysname(device),
property,
val);
return false;
}
static void
hw_set_key_down(struct fallback_dispatch *dispatch, int code, int pressed)
{
long_set_bit_state(dispatch->hw_key_mask, code, pressed);
}
static bool
hw_is_key_down(struct fallback_dispatch *dispatch, int code)
{
return long_bit_is_set(dispatch->hw_key_mask, code);
}
static int
get_key_down_count(struct evdev_device *device, int code)
{
return device->key_count[code];
}
static int
update_key_down_count(struct evdev_device *device, int code, int pressed)
{
int key_count;
assert(code >= 0 && code < KEY_CNT);
if (pressed) {
key_count = ++device->key_count[code];
} else {
assert(device->key_count[code] > 0);
key_count = --device->key_count[code];
}
if (key_count > 32) {
log_bug_libinput(evdev_libinput_context(device),
"Key count for %s reached abnormal values\n",
libevdev_event_code_get_name(EV_KEY, code));
}
return key_count;
}
static void
fallback_keyboard_notify_key(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time,
int key,
enum libinput_key_state state)
{
int down_count;
down_count = update_key_down_count(device, key, state);
if ((state == LIBINPUT_KEY_STATE_PRESSED && down_count == 1) ||
(state == LIBINPUT_KEY_STATE_RELEASED && down_count == 0))
keyboard_notify_key(&device->base, time, key, state);
}
void
evdev_pointer_notify_physical_button(struct evdev_device *device,
uint64_t time,
int button,
enum libinput_button_state state)
{
if (evdev_middlebutton_filter_button(device,
time,
button,
state))
return;
evdev_pointer_notify_button(device,
time,
(unsigned int)button,
state);
}
static void
evdev_pointer_post_button(struct evdev_device *device,
uint64_t time,
unsigned int button,
enum libinput_button_state state)
{
int down_count;
down_count = update_key_down_count(device, button, state);
if ((state == LIBINPUT_BUTTON_STATE_PRESSED && down_count == 1) ||
(state == LIBINPUT_BUTTON_STATE_RELEASED && down_count == 0)) {
pointer_notify_button(&device->base, time, button, state);
if (state == LIBINPUT_BUTTON_STATE_RELEASED) {
if (device->left_handed.change_to_enabled)
device->left_handed.change_to_enabled(device);
if (device->scroll.change_scroll_method)
device->scroll.change_scroll_method(device);
}
}
}
static void
evdev_button_scroll_timeout(uint64_t time, void *data)
{
struct evdev_device *device = data;
device->scroll.button_scroll_active = true;
}
static void
evdev_button_scroll_button(struct evdev_device *device,
uint64_t time, int is_press)
{
device->scroll.button_scroll_btn_pressed = is_press;
if (is_press) {
libinput_timer_set(&device->scroll.timer,
time + DEFAULT_MIDDLE_BUTTON_SCROLL_TIMEOUT);
device->scroll.button_down_time = time;
} else {
libinput_timer_cancel(&device->scroll.timer);
if (device->scroll.button_scroll_active) {
evdev_stop_scroll(device, time,
LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS);
device->scroll.button_scroll_active = false;
} else {
/* If the button is released quickly enough emit the
* button press/release events. */
evdev_pointer_post_button(device,
device->scroll.button_down_time,
device->scroll.button,
LIBINPUT_BUTTON_STATE_PRESSED);
evdev_pointer_post_button(device, time,
device->scroll.button,
LIBINPUT_BUTTON_STATE_RELEASED);
}
}
}
void
evdev_pointer_notify_button(struct evdev_device *device,
uint64_t time,
unsigned int button,
enum libinput_button_state state)
{
if (device->scroll.method == LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN &&
button == device->scroll.button) {
evdev_button_scroll_button(device, time, state);
return;
}
evdev_pointer_post_button(device, time, button, state);
}
void
evdev_device_led_update(struct evdev_device *device, enum libinput_led leds)
{
static const struct {
enum libinput_led libinput;
int evdev;
} map[] = {
{ LIBINPUT_LED_NUM_LOCK, LED_NUML },
{ LIBINPUT_LED_CAPS_LOCK, LED_CAPSL },
{ LIBINPUT_LED_SCROLL_LOCK, LED_SCROLLL },
};
struct input_event ev[ARRAY_LENGTH(map) + 1];
unsigned int i;
if (!(device->seat_caps & EVDEV_DEVICE_KEYBOARD))
return;
memset(ev, 0, sizeof(ev));
for (i = 0; i < ARRAY_LENGTH(map); i++) {
ev[i].type = EV_LED;
ev[i].code = map[i].evdev;
ev[i].value = !!(leds & map[i].libinput);
}
ev[i].type = EV_SYN;
ev[i].code = SYN_REPORT;
i = write(device->fd, ev, sizeof ev);
(void)i; /* no, we really don't care about the return value */
}
void
evdev_transform_absolute(struct evdev_device *device,
struct device_coords *point)
{
if (!device->abs.apply_calibration)
return;
matrix_mult_vec(&device->abs.calibration, &point->x, &point->y);
}
void
evdev_transform_relative(struct evdev_device *device,
struct device_coords *point)
{
struct matrix rel_matrix;
if (!device->abs.apply_calibration)
return;
matrix_to_relative(&rel_matrix, &device->abs.calibration);
matrix_mult_vec(&rel_matrix, &point->x, &point->y);
}
static inline double
scale_axis(const struct input_absinfo *absinfo, double val, double to_range)
{
return (val - absinfo->minimum) * to_range /
(absinfo->maximum - absinfo->minimum + 1);
}
double
evdev_device_transform_x(struct evdev_device *device,
double x,
uint32_t width)
{
return scale_axis(device->abs.absinfo_x, x, width);
}
double
evdev_device_transform_y(struct evdev_device *device,
double y,
uint32_t height)
{
return scale_axis(device->abs.absinfo_y, y, height);
}
static inline void
normalize_delta(struct evdev_device *device,
const struct device_coords *delta,
struct normalized_coords *normalized)
{
normalized->x = delta->x * DEFAULT_MOUSE_DPI / (double)device->dpi;
normalized->y = delta->y * DEFAULT_MOUSE_DPI / (double)device->dpi;
}
static inline bool
evdev_post_trackpoint_scroll(struct evdev_device *device,
struct normalized_coords unaccel,
uint64_t time)
{
if (device->scroll.method != LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN ||
!device->scroll.button_scroll_btn_pressed)
return false;
if (device->scroll.button_scroll_active)
evdev_post_scroll(device, time,
LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS,
&unaccel);
/* if the button is down but scroll is not active, we're within the
timeout where swallow motion events but don't post scroll buttons */
return true;
}
static inline bool
fallback_filter_defuzz_touch(struct fallback_dispatch *dispatch,
struct evdev_device *device,
struct mt_slot *slot)
{
struct device_coords point;
if (!dispatch->mt.want_hysteresis)
return false;
point.x = evdev_hysteresis(slot->point.x,
slot->hysteresis_center.x,
dispatch->mt.hysteresis_margin.x);
point.y = evdev_hysteresis(slot->point.y,
slot->hysteresis_center.y,
dispatch->mt.hysteresis_margin.y);
slot->hysteresis_center = slot->point;
if (point.x == slot->point.x && point.y == slot->point.y)
return true;
slot->point = point;
return false;
}
static inline void
fallback_rotate_relative(struct fallback_dispatch *dispatch,
struct evdev_device *device)
{
struct device_coords rel = dispatch->rel;
if (!device->base.config.rotation)
return;
/* loss of precision for non-90 degrees, but we only support 90 deg
* right now anyway */
matrix_mult_vec(&dispatch->rotation.matrix, &rel.x, &rel.y);
dispatch->rel = rel;
}
static void
fallback_flush_relative_motion(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time)
{
struct libinput *libinput = evdev_libinput_context(device);
struct libinput_device *base = &device->base;
struct normalized_coords accel, unaccel;
struct device_float_coords raw;
if (!(device->seat_caps & EVDEV_DEVICE_POINTER))
return;
fallback_rotate_relative(dispatch, device);
normalize_delta(device, &dispatch->rel, &unaccel);
raw.x = dispatch->rel.x;
raw.y = dispatch->rel.y;
dispatch->rel.x = 0;
dispatch->rel.y = 0;
/* Use unaccelerated deltas for pointing stick scroll */
if (evdev_post_trackpoint_scroll(device, unaccel, time))
return;
if (device->pointer.filter) {
/* Apply pointer acceleration. */
accel = filter_dispatch(device->pointer.filter,
&raw,
device,
time);
} else {
log_bug_libinput(libinput,
"%s: accel filter missing\n",
udev_device_get_devnode(device->udev_device));
accel = unaccel;
}
if (normalized_is_zero(accel) && normalized_is_zero(unaccel))
return;
pointer_notify_motion(base, time, &accel, &raw);
}
static void
fallback_flush_absolute_motion(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time)
{
struct libinput_device *base = &device->base;
struct device_coords point;
if (!(device->seat_caps & EVDEV_DEVICE_POINTER))
return;
point = dispatch->abs.point;
evdev_transform_absolute(device, &point);
pointer_notify_motion_absolute(base, time, &point);
}
static bool
fallback_flush_mt_down(struct fallback_dispatch *dispatch,
struct evdev_device *device,
int slot_idx,
uint64_t time)
{
struct libinput_device *base = &device->base;
struct libinput_seat *seat = base->seat;
struct device_coords point;
struct mt_slot *slot;
int seat_slot;
if (!(device->seat_caps & EVDEV_DEVICE_TOUCH))
return false;
slot = &dispatch->mt.slots[slot_idx];
if (slot->seat_slot != -1) {
struct libinput *libinput = evdev_libinput_context(device);
log_bug_kernel(libinput,
"%s: Driver sent multiple touch down for the "
"same slot",
udev_device_get_devnode(device->udev_device));
return false;
}
seat_slot = ffs(~seat->slot_map) - 1;
slot->seat_slot = seat_slot;
if (seat_slot == -1)
return false;
seat->slot_map |= 1 << seat_slot;
point = slot->point;
slot->hysteresis_center = point;
evdev_transform_absolute(device, &point);
touch_notify_touch_down(base, time, slot_idx, seat_slot,
&point);
return true;
}
static bool
fallback_flush_mt_motion(struct fallback_dispatch *dispatch,
struct evdev_device *device,
int slot_idx,
uint64_t time)
{
struct libinput_device *base = &device->base;
struct device_coords point;
struct mt_slot *slot;
int seat_slot;
if (!(device->seat_caps & EVDEV_DEVICE_TOUCH))
return false;
slot = &dispatch->mt.slots[slot_idx];
seat_slot = slot->seat_slot;
point = slot->point;
if (seat_slot == -1)
return false;
if (fallback_filter_defuzz_touch(dispatch, device, slot))
return false;
evdev_transform_absolute(device, &point);
touch_notify_touch_motion(base, time, slot_idx, seat_slot,
&point);
return true;
}
static bool
fallback_flush_mt_up(struct fallback_dispatch *dispatch,
struct evdev_device *device,
int slot_idx,
uint64_t time)
{
struct libinput_device *base = &device->base;
struct libinput_seat *seat = base->seat;
struct mt_slot *slot;
int seat_slot;
if (!(device->seat_caps & EVDEV_DEVICE_TOUCH))
return false;
slot = &dispatch->mt.slots[slot_idx];
seat_slot = slot->seat_slot;
slot->seat_slot = -1;
if (seat_slot == -1)
return false;
seat->slot_map &= ~(1 << seat_slot);
touch_notify_touch_up(base, time, slot_idx, seat_slot);
return true;
}
static bool
fallback_flush_st_down(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time)
{
struct libinput_device *base = &device->base;
struct libinput_seat *seat = base->seat;
struct device_coords point;
int seat_slot;
if (!(device->seat_caps & EVDEV_DEVICE_TOUCH))
return false;
if (dispatch->abs.seat_slot != -1) {
struct libinput *libinput = evdev_libinput_context(device);
log_bug_kernel(libinput,
"%s: Driver sent multiple touch down for the "
"same slot",
udev_device_get_devnode(device->udev_device));
return false;
}
seat_slot = ffs(~seat->slot_map) - 1;
dispatch->abs.seat_slot = seat_slot;
if (seat_slot == -1)
return false;
seat->slot_map |= 1 << seat_slot;
point = dispatch->abs.point;
evdev_transform_absolute(device, &point);
touch_notify_touch_down(base, time, -1, seat_slot, &point);
return true;
}
static bool
fallback_flush_st_motion(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time)
{
struct libinput_device *base = &device->base;
struct device_coords point;
int seat_slot;
point = dispatch->abs.point;
evdev_transform_absolute(device, &point);
seat_slot = dispatch->abs.seat_slot;
if (seat_slot == -1)
return false;
touch_notify_touch_motion(base, time, -1, seat_slot, &point);
return true;
}
static bool
fallback_flush_st_up(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time)
{
struct libinput_device *base = &device->base;
struct libinput_seat *seat = base->seat;
int seat_slot;
if (!(device->seat_caps & EVDEV_DEVICE_TOUCH))
return false;
seat_slot = dispatch->abs.seat_slot;
dispatch->abs.seat_slot = -1;
if (seat_slot == -1)
return false;
seat->slot_map &= ~(1 << seat_slot);
touch_notify_touch_up(base, time, -1, seat_slot);
return true;
}
static enum evdev_event_type
fallback_flush_pending_event(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time)
{
enum evdev_event_type sent_event;
int slot_idx;
sent_event = dispatch->pending_event;
switch (dispatch->pending_event) {
case EVDEV_NONE:
break;
case EVDEV_RELATIVE_MOTION:
fallback_flush_relative_motion(dispatch, device, time);
break;
case EVDEV_ABSOLUTE_MT_DOWN:
slot_idx = dispatch->mt.slot;
if (!fallback_flush_mt_down(dispatch,
device,
slot_idx,
time))
sent_event = EVDEV_NONE;
break;
case EVDEV_ABSOLUTE_MT_MOTION:
slot_idx = dispatch->mt.slot;
if (!fallback_flush_mt_motion(dispatch,
device,
slot_idx,
time))
sent_event = EVDEV_NONE;
break;
case EVDEV_ABSOLUTE_MT_UP:
slot_idx = dispatch->mt.slot;
if (!fallback_flush_mt_up(dispatch,
device,
slot_idx,
time))
sent_event = EVDEV_NONE;
break;
case EVDEV_ABSOLUTE_TOUCH_DOWN:
if (!fallback_flush_st_down(dispatch, device, time))
sent_event = EVDEV_NONE;
break;
case EVDEV_ABSOLUTE_MOTION:
if (device->seat_caps & EVDEV_DEVICE_TOUCH) {
if (fallback_flush_st_motion(dispatch,
device,
time))
sent_event = EVDEV_ABSOLUTE_MT_MOTION;
else
sent_event = EVDEV_NONE;
} else if (device->seat_caps & EVDEV_DEVICE_POINTER) {
fallback_flush_absolute_motion(dispatch,
device,
time);
}
break;
case EVDEV_ABSOLUTE_TOUCH_UP:
if (!fallback_flush_st_up(dispatch, device, time))
sent_event = EVDEV_NONE;
break;
default:
assert(0 && "Unknown pending event type");
break;
}
dispatch->pending_event = EVDEV_NONE;
return sent_event;
}
static enum evdev_key_type
get_key_type(uint16_t code)
{
switch (code) {
case BTN_TOOL_PEN:
case BTN_TOOL_RUBBER:
case BTN_TOOL_BRUSH:
case BTN_TOOL_PENCIL:
case BTN_TOOL_AIRBRUSH:
case BTN_TOOL_MOUSE:
case BTN_TOOL_LENS:
case BTN_TOOL_QUINTTAP:
case BTN_TOOL_DOUBLETAP:
case BTN_TOOL_TRIPLETAP:
case BTN_TOOL_QUADTAP:
case BTN_TOOL_FINGER:
case BTN_TOUCH:
return EVDEV_KEY_TYPE_NONE;
}
if (code >= KEY_ESC && code <= KEY_MICMUTE)
return EVDEV_KEY_TYPE_KEY;
if (code >= BTN_MISC && code <= BTN_GEAR_UP)
return EVDEV_KEY_TYPE_BUTTON;
if (code >= KEY_OK && code <= KEY_LIGHTS_TOGGLE)
return EVDEV_KEY_TYPE_KEY;
if (code >= BTN_DPAD_UP && code <= BTN_DPAD_RIGHT)
return EVDEV_KEY_TYPE_BUTTON;
if (code >= KEY_ALS_TOGGLE && code <= KEY_KBDINPUTASSIST_CANCEL)
return EVDEV_KEY_TYPE_KEY;
if (code >= BTN_TRIGGER_HAPPY && code <= BTN_TRIGGER_HAPPY40)
return EVDEV_KEY_TYPE_BUTTON;
return EVDEV_KEY_TYPE_NONE;
}
static void
fallback_process_touch_button(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time, int value)
{
if (dispatch->pending_event != EVDEV_NONE &&
dispatch->pending_event != EVDEV_ABSOLUTE_MOTION)
fallback_flush_pending_event(dispatch, device, time);
dispatch->pending_event = (value ?
EVDEV_ABSOLUTE_TOUCH_DOWN :
EVDEV_ABSOLUTE_TOUCH_UP);
}
static inline void
fallback_process_key(struct fallback_dispatch *dispatch,
struct evdev_device *device,
struct input_event *e, uint64_t time)
{
enum evdev_key_type type;
/* ignore kernel key repeat */
if (e->value == 2)
return;
if (e->code == BTN_TOUCH) {
if (!device->is_mt)
fallback_process_touch_button(dispatch,
device,
time,
e->value);
return;
}
fallback_flush_pending_event(dispatch, device, time);
type = get_key_type(e->code);
/* Ignore key release events from the kernel for keys that libinput
* never got a pressed event for. */
if (e->value == 0) {
switch (type) {
case EVDEV_KEY_TYPE_NONE:
break;
case EVDEV_KEY_TYPE_KEY:
case EVDEV_KEY_TYPE_BUTTON:
if (!hw_is_key_down(dispatch, e->code))
return;
}
}
hw_set_key_down(dispatch, e->code, e->value);
switch (type) {
case EVDEV_KEY_TYPE_NONE:
break;
case EVDEV_KEY_TYPE_KEY:
fallback_keyboard_notify_key(
dispatch,
device,
time,
e->code,
e->value ? LIBINPUT_KEY_STATE_PRESSED :
LIBINPUT_KEY_STATE_RELEASED);
break;
case EVDEV_KEY_TYPE_BUTTON:
evdev_pointer_notify_physical_button(
device,
time,
evdev_to_left_handed(device, e->code),
e->value ? LIBINPUT_BUTTON_STATE_PRESSED :
LIBINPUT_BUTTON_STATE_RELEASED);
break;
}
}
static void
fallback_process_touch(struct fallback_dispatch *dispatch,
struct evdev_device *device,
struct input_event *e,
uint64_t time)
{
switch (e->code) {
case ABS_MT_SLOT:
if ((size_t)e->value >= dispatch->mt.slots_len) {
log_bug_libinput(evdev_libinput_context(device),
"%s exceeds slots (%d of %zd)\n",
device->devname,
e->value,
dispatch->mt.slots_len);
e->value = dispatch->mt.slots_len - 1;
}
fallback_flush_pending_event(dispatch, device, time);
dispatch->mt.slot = e->value;
break;
case ABS_MT_TRACKING_ID:
if (dispatch->pending_event != EVDEV_NONE &&
dispatch->pending_event != EVDEV_ABSOLUTE_MT_MOTION)
fallback_flush_pending_event(dispatch, device, time);
if (e->value >= 0)
dispatch->pending_event = EVDEV_ABSOLUTE_MT_DOWN;
else
dispatch->pending_event = EVDEV_ABSOLUTE_MT_UP;
break;
case ABS_MT_POSITION_X:
evdev_device_check_abs_axis_range(device, e->code, e->value);
dispatch->mt.slots[dispatch->mt.slot].point.x = e->value;
if (dispatch->pending_event == EVDEV_NONE)
dispatch->pending_event = EVDEV_ABSOLUTE_MT_MOTION;
break;
case ABS_MT_POSITION_Y:
evdev_device_check_abs_axis_range(device, e->code, e->value);
dispatch->mt.slots[dispatch->mt.slot].point.y = e->value;
if (dispatch->pending_event == EVDEV_NONE)
dispatch->pending_event = EVDEV_ABSOLUTE_MT_MOTION;
break;
}
}
static inline void
fallback_process_absolute_motion(struct fallback_dispatch *dispatch,
struct evdev_device *device,
struct input_event *e)
{
switch (e->code) {
case ABS_X:
evdev_device_check_abs_axis_range(device, e->code, e->value);
dispatch->abs.point.x = e->value;
if (dispatch->pending_event == EVDEV_NONE)
dispatch->pending_event = EVDEV_ABSOLUTE_MOTION;
break;
case ABS_Y:
evdev_device_check_abs_axis_range(device, e->code, e->value);
dispatch->abs.point.y = e->value;
if (dispatch->pending_event == EVDEV_NONE)
dispatch->pending_event = EVDEV_ABSOLUTE_MOTION;
break;
}
}
void
evdev_notify_axis(struct evdev_device *device,
uint64_t time,
uint32_t axes,
enum libinput_pointer_axis_source source,
const struct normalized_coords *delta_in,
const struct discrete_coords *discrete_in)
{
struct normalized_coords delta = *delta_in;
struct discrete_coords discrete = *discrete_in;
if (device->scroll.natural_scrolling_enabled) {
delta.x *= -1;
delta.y *= -1;
discrete.x *= -1;
discrete.y *= -1;
}
pointer_notify_axis(&device->base,
time,
axes,
source,
&delta,
&discrete);
}
static inline bool
fallback_reject_relative(struct evdev_device *device,
const struct input_event *e,
uint64_t time)
{
if ((e->code == REL_X || e->code == REL_Y) &&
(device->seat_caps & EVDEV_DEVICE_POINTER) == 0) {
log_bug_libinput_ratelimit(evdev_libinput_context(device),
&device->nonpointer_rel_limit,
"REL_X/Y from device '%s', but this device is not a pointer\n",
device->devname);
return true;
}
return false;
}
static inline void
fallback_process_relative(struct fallback_dispatch *dispatch,
struct evdev_device *device,
struct input_event *e, uint64_t time)
{
struct normalized_coords wheel_degrees = { 0.0, 0.0 };
struct discrete_coords discrete = { 0.0, 0.0 };
enum libinput_pointer_axis_source source;
if (fallback_reject_relative(device, e, time))
return;
switch (e->code) {
case REL_X:
if (dispatch->pending_event != EVDEV_RELATIVE_MOTION)
fallback_flush_pending_event(dispatch, device, time);
dispatch->rel.x += e->value;
dispatch->pending_event = EVDEV_RELATIVE_MOTION;
break;
case REL_Y:
if (dispatch->pending_event != EVDEV_RELATIVE_MOTION)
fallback_flush_pending_event(dispatch, device, time);
dispatch->rel.y += e->value;
dispatch->pending_event = EVDEV_RELATIVE_MOTION;
break;
case REL_WHEEL:
fallback_flush_pending_event(dispatch, device, time);
wheel_degrees.y = -1 * e->value *
device->scroll.wheel_click_angle.x;
discrete.y = -1 * e->value;
source = device->scroll.is_tilt.vertical ?
LIBINPUT_POINTER_AXIS_SOURCE_WHEEL_TILT:
LIBINPUT_POINTER_AXIS_SOURCE_WHEEL;
evdev_notify_axis(
device,
time,
AS_MASK(LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL),
source,
&wheel_degrees,
&discrete);
break;
case REL_HWHEEL:
fallback_flush_pending_event(dispatch, device, time);
wheel_degrees.x = e->value *
device->scroll.wheel_click_angle.y;
discrete.x = e->value;
source = device->scroll.is_tilt.horizontal ?
LIBINPUT_POINTER_AXIS_SOURCE_WHEEL_TILT:
LIBINPUT_POINTER_AXIS_SOURCE_WHEEL;
evdev_notify_axis(
device,
time,
AS_MASK(LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL),
source,
&wheel_degrees,
&discrete);
break;
}
}
static inline void
fallback_process_absolute(struct fallback_dispatch *dispatch,
struct evdev_device *device,
struct input_event *e,
uint64_t time)
{
if (device->is_mt) {
fallback_process_touch(dispatch, device, e, time);
} else {
fallback_process_absolute_motion(dispatch, device, e);
}
}
static inline bool
fallback_any_button_down(struct fallback_dispatch *dispatch,
struct evdev_device *device)
{
unsigned int button;
for (button = BTN_LEFT; button < BTN_JOYSTICK; button++) {
if (libevdev_has_event_code(device->evdev, EV_KEY, button) &&
hw_is_key_down(dispatch, button))
return true;
}
return false;
}
static void
evdev_tag_external_mouse(struct evdev_device *device,
struct udev_device *udev_device)
{
int bustype;
bustype = libevdev_get_id_bustype(device->evdev);
if (bustype == BUS_USB || bustype == BUS_BLUETOOTH)
device->tags |= EVDEV_TAG_EXTERNAL_MOUSE;
}
static void
evdev_tag_trackpoint(struct evdev_device *device,
struct udev_device *udev_device)
{
if (libevdev_has_property(device->evdev,
INPUT_PROP_POINTING_STICK) ||
parse_udev_flag(device, udev_device, "ID_INPUT_POINTINGSTICK"))
device->tags |= EVDEV_TAG_TRACKPOINT;
}
static void
evdev_tag_keyboard(struct evdev_device *device,
struct udev_device *udev_device)
{
int code;
if (!libevdev_has_event_type(device->evdev, EV_KEY))
return;
for (code = KEY_Q; code <= KEY_P; code++) {
if (!libevdev_has_event_code(device->evdev,
EV_KEY,
code))
return;
}
device->tags |= EVDEV_TAG_KEYBOARD;
}
static void
evdev_tag_lid_switch(struct evdev_device *device,
struct udev_device *udev_device)
{
device->tags |= EVDEV_TAG_LID_SWITCH;
}
static void
fallback_process(struct evdev_dispatch *evdev_dispatch,
struct evdev_device *device,
struct input_event *event,
uint64_t time)
{
struct fallback_dispatch *dispatch = fallback_dispatch(evdev_dispatch);
enum evdev_event_type sent;
if (dispatch->ignore_events)
return;
switch (event->type) {
case EV_REL:
fallback_process_relative(dispatch, device, event, time);
break;
case EV_ABS:
fallback_process_absolute(dispatch, device, event, time);
break;
case EV_KEY:
fallback_process_key(dispatch, device, event, time);
break;
case EV_SYN:
sent = fallback_flush_pending_event(dispatch, device, time);
switch (sent) {
case EVDEV_ABSOLUTE_TOUCH_DOWN:
case EVDEV_ABSOLUTE_TOUCH_UP:
case EVDEV_ABSOLUTE_MT_DOWN:
case EVDEV_ABSOLUTE_MT_MOTION:
case EVDEV_ABSOLUTE_MT_UP:
touch_notify_frame(&device->base, time);
break;
case EVDEV_ABSOLUTE_MOTION:
case EVDEV_RELATIVE_MOTION:
case EVDEV_NONE:
break;
}
break;
}
}
static void
release_touches(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time)
{
unsigned int idx;
bool need_frame = false;
need_frame = fallback_flush_st_up(dispatch, device, time);
for (idx = 0; idx < dispatch->mt.slots_len; idx++) {
struct mt_slot *slot = &dispatch->mt.slots[idx];
if (slot->seat_slot == -1)
continue;
if (fallback_flush_mt_up(dispatch, device, idx, time))
need_frame = true;
}
if (need_frame)
touch_notify_frame(&device->base, time);
}
static void
release_pressed_keys(struct fallback_dispatch *dispatch,
struct evdev_device *device,
uint64_t time)
{
struct libinput *libinput = evdev_libinput_context(device);
int code;
for (code = 0; code < KEY_CNT; code++) {
int count = get_key_down_count(device, code);
if (count == 0)
continue;
if (count > 1) {
log_bug_libinput(libinput,
"Key %d is down %d times.\n",
code,
count);
}
switch (get_key_type(code)) {
case EVDEV_KEY_TYPE_NONE:
break;
case EVDEV_KEY_TYPE_KEY:
fallback_keyboard_notify_key(
dispatch,
device,
time,
code,
LIBINPUT_KEY_STATE_RELEASED);
break;
case EVDEV_KEY_TYPE_BUTTON:
evdev_pointer_notify_physical_button(
device,
time,
evdev_to_left_handed(device, code),
LIBINPUT_BUTTON_STATE_RELEASED);
break;
}
count = get_key_down_count(device, code);
if (count != 0) {
log_bug_libinput(libinput,
"Releasing key %d failed.\n",
code);
break;
}
}
}
static void
fallback_return_to_neutral_state(struct fallback_dispatch *dispatch,
struct evdev_device *device)
{
struct libinput *libinput = evdev_libinput_context(device);
uint64_t time;
if ((time = libinput_now(libinput)) == 0)
return;
release_touches(dispatch, device, time);
release_pressed_keys(dispatch, device, time);
memset(dispatch->hw_key_mask, 0, sizeof(dispatch->hw_key_mask));
}
static void
fallback_suspend(struct evdev_dispatch *evdev_dispatch,
struct evdev_device *device)
{
struct fallback_dispatch *dispatch = fallback_dispatch(evdev_dispatch);
fallback_return_to_neutral_state(dispatch, device);
}
static void
fallback_toggle_touch(struct evdev_dispatch *evdev_dispatch,
struct evdev_device *device,
bool enable)
{
struct fallback_dispatch *dispatch = fallback_dispatch(evdev_dispatch);
bool ignore_events = !enable;
if (ignore_events == dispatch->ignore_events)
return;
if (ignore_events)
fallback_return_to_neutral_state(dispatch, device);
dispatch->ignore_events = ignore_events;
}
static void
fallback_destroy(struct evdev_dispatch *evdev_dispatch)
{
struct fallback_dispatch *dispatch = fallback_dispatch(evdev_dispatch);
free(dispatch->mt.slots);
free(dispatch);
}
static int
evdev_calibration_has_matrix(struct libinput_device *libinput_device)
{
struct evdev_device *device = evdev_device(libinput_device);
return device->abs.absinfo_x && device->abs.absinfo_y;
}
static enum libinput_config_status
evdev_calibration_set_matrix(struct libinput_device *libinput_device,
const float matrix[6])
{
struct evdev_device *device = evdev_device(libinput_device);
evdev_device_calibrate(device, matrix);
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static int
evdev_calibration_get_matrix(struct libinput_device *libinput_device,
float matrix[6])
{
struct evdev_device *device = evdev_device(libinput_device);
matrix_to_farray6(&device->abs.usermatrix, matrix);
return !matrix_is_identity(&device->abs.usermatrix);
}
static int
evdev_calibration_get_default_matrix(struct libinput_device *libinput_device,
float matrix[6])
{
struct evdev_device *device = evdev_device(libinput_device);
matrix_to_farray6(&device->abs.default_calibration, matrix);
return !matrix_is_identity(&device->abs.default_calibration);
}
struct evdev_dispatch_interface fallback_interface = {
fallback_process,
fallback_suspend,
NULL, /* remove */
fallback_destroy,
NULL, /* device_added */
NULL, /* device_removed */
NULL, /* device_suspended */
NULL, /* device_resumed */
NULL, /* post_added */
fallback_toggle_touch, /* toggle_touch */
};
static uint32_t
evdev_sendevents_get_modes(struct libinput_device *device)
{
return LIBINPUT_CONFIG_SEND_EVENTS_DISABLED;
}
static enum libinput_config_status
evdev_sendevents_set_mode(struct libinput_device *device,
enum libinput_config_send_events_mode mode)
{
struct evdev_device *evdev = evdev_device(device);
struct evdev_dispatch *dispatch = evdev->dispatch;
if (mode == dispatch->sendevents.current_mode)
return LIBINPUT_CONFIG_STATUS_SUCCESS;
switch(mode) {
case LIBINPUT_CONFIG_SEND_EVENTS_ENABLED:
evdev_device_resume(evdev);
break;
case LIBINPUT_CONFIG_SEND_EVENTS_DISABLED:
evdev_device_suspend(evdev);
break;
default: /* no support for combined modes yet */
return LIBINPUT_CONFIG_STATUS_UNSUPPORTED;
}
dispatch->sendevents.current_mode = mode;
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static enum libinput_config_send_events_mode
evdev_sendevents_get_mode(struct libinput_device *device)
{
struct evdev_device *evdev = evdev_device(device);
struct evdev_dispatch *dispatch = evdev->dispatch;
return dispatch->sendevents.current_mode;
}
static enum libinput_config_send_events_mode
evdev_sendevents_get_default_mode(struct libinput_device *device)
{
return LIBINPUT_CONFIG_SEND_EVENTS_ENABLED;
}
static int
evdev_left_handed_has(struct libinput_device *device)
{
/* This is only hooked up when we have left-handed configuration, so we
* can hardcode 1 here */
return 1;
}
static void
evdev_change_to_left_handed(struct evdev_device *device)
{
struct fallback_dispatch *dispatch = fallback_dispatch(device->dispatch);
if (device->left_handed.want_enabled == device->left_handed.enabled)
return;
if (fallback_any_button_down(dispatch, device))
return;
device->left_handed.enabled = device->left_handed.want_enabled;
}
static enum libinput_config_status
evdev_left_handed_set(struct libinput_device *device, int left_handed)
{
struct evdev_device *evdev = evdev_device(device);
evdev->left_handed.want_enabled = left_handed ? true : false;
evdev->left_handed.change_to_enabled(evdev);
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static int
evdev_left_handed_get(struct libinput_device *device)
{
struct evdev_device *evdev = evdev_device(device);
/* return the wanted configuration, even if it hasn't taken
* effect yet! */
return evdev->left_handed.want_enabled;
}
static int
evdev_left_handed_get_default(struct libinput_device *device)
{
return 0;
}
void
evdev_init_left_handed(struct evdev_device *device,
void (*change_to_left_handed)(struct evdev_device *))
{
device->left_handed.config.has = evdev_left_handed_has;
device->left_handed.config.set = evdev_left_handed_set;
device->left_handed.config.get = evdev_left_handed_get;
device->left_handed.config.get_default = evdev_left_handed_get_default;
device->base.config.left_handed = &device->left_handed.config;
device->left_handed.enabled = false;
device->left_handed.want_enabled = false;
device->left_handed.change_to_enabled = change_to_left_handed;
}
static uint32_t
evdev_scroll_get_methods(struct libinput_device *device)
{
return LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN;
}
static void
evdev_change_scroll_method(struct evdev_device *device)
{
struct fallback_dispatch *dispatch = fallback_dispatch(device->dispatch);
if (device->scroll.want_method == device->scroll.method &&
device->scroll.want_button == device->scroll.button)
return;
if (fallback_any_button_down(dispatch, device))
return;
device->scroll.method = device->scroll.want_method;
device->scroll.button = device->scroll.want_button;
}
static enum libinput_config_status
evdev_scroll_set_method(struct libinput_device *device,
enum libinput_config_scroll_method method)
{
struct evdev_device *evdev = evdev_device(device);
evdev->scroll.want_method = method;
evdev->scroll.change_scroll_method(evdev);
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static enum libinput_config_scroll_method
evdev_scroll_get_method(struct libinput_device *device)
{
struct evdev_device *evdev = evdev_device(device);
/* return the wanted configuration, even if it hasn't taken
* effect yet! */
return evdev->scroll.want_method;
}
static enum libinput_config_scroll_method
evdev_scroll_get_default_method(struct libinput_device *device)
{
struct evdev_device *evdev = evdev_device(device);
if (evdev->tags & EVDEV_TAG_TRACKPOINT)
return LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN;
/* Mice without a scroll wheel but with middle button have on-button
* scrolling by default */
if (!libevdev_has_event_code(evdev->evdev, EV_REL, REL_WHEEL) &&
!libevdev_has_event_code(evdev->evdev, EV_REL, REL_HWHEEL) &&
libevdev_has_event_code(evdev->evdev, EV_KEY, BTN_MIDDLE))
return LIBINPUT_CONFIG_SCROLL_ON_BUTTON_DOWN;
return LIBINPUT_CONFIG_SCROLL_NO_SCROLL;
}
static enum libinput_config_status
evdev_scroll_set_button(struct libinput_device *device,
uint32_t button)
{
struct evdev_device *evdev = evdev_device(device);
evdev->scroll.want_button = button;
evdev->scroll.change_scroll_method(evdev);
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static uint32_t
evdev_scroll_get_button(struct libinput_device *device)
{
struct evdev_device *evdev = evdev_device(device);
/* return the wanted configuration, even if it hasn't taken
* effect yet! */
return evdev->scroll.want_button;
}
static uint32_t
evdev_scroll_get_default_button(struct libinput_device *device)
{
struct evdev_device *evdev = evdev_device(device);
if (libevdev_has_event_code(evdev->evdev, EV_KEY, BTN_MIDDLE))
return BTN_MIDDLE;
return 0;
}
static void
evdev_init_button_scroll(struct evdev_device *device,
void (*change_scroll_method)(struct evdev_device *))
{
libinput_timer_init(&device->scroll.timer,
evdev_libinput_context(device),
evdev_button_scroll_timeout, device);
device->scroll.config.get_methods = evdev_scroll_get_methods;
device->scroll.config.set_method = evdev_scroll_set_method;
device->scroll.config.get_method = evdev_scroll_get_method;
device->scroll.config.get_default_method = evdev_scroll_get_default_method;
device->scroll.config.set_button = evdev_scroll_set_button;
device->scroll.config.get_button = evdev_scroll_get_button;
device->scroll.config.get_default_button = evdev_scroll_get_default_button;
device->base.config.scroll_method = &device->scroll.config;
device->scroll.method = evdev_scroll_get_default_method((struct libinput_device *)device);
device->scroll.want_method = device->scroll.method;
device->scroll.button = evdev_scroll_get_default_button((struct libinput_device *)device);
device->scroll.want_button = device->scroll.button;
device->scroll.change_scroll_method = change_scroll_method;
}
void
evdev_init_calibration(struct evdev_device *device,
struct libinput_device_config_calibration *calibration)
{
device->base.config.calibration = calibration;
calibration->has_matrix = evdev_calibration_has_matrix;
calibration->set_matrix = evdev_calibration_set_matrix;
calibration->get_matrix = evdev_calibration_get_matrix;
calibration->get_default_matrix = evdev_calibration_get_default_matrix;
}
void
evdev_init_sendevents(struct evdev_device *device,
struct evdev_dispatch *dispatch)
{
device->base.config.sendevents = &dispatch->sendevents.config;
dispatch->sendevents.current_mode = LIBINPUT_CONFIG_SEND_EVENTS_ENABLED;
dispatch->sendevents.config.get_modes = evdev_sendevents_get_modes;
dispatch->sendevents.config.set_mode = evdev_sendevents_set_mode;
dispatch->sendevents.config.get_mode = evdev_sendevents_get_mode;
dispatch->sendevents.config.get_default_mode = evdev_sendevents_get_default_mode;
}
static int
evdev_scroll_config_natural_has(struct libinput_device *device)
{
return 1;
}
static enum libinput_config_status
evdev_scroll_config_natural_set(struct libinput_device *device,
int enabled)
{
struct evdev_device *dev = evdev_device(device);
dev->scroll.natural_scrolling_enabled = enabled ? true : false;
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static int
evdev_scroll_config_natural_get(struct libinput_device *device)
{
struct evdev_device *dev = evdev_device(device);
return dev->scroll.natural_scrolling_enabled ? 1 : 0;
}
static int
evdev_scroll_config_natural_get_default(struct libinput_device *device)
{
/* could enable this on Apple touchpads. could do that, could
* very well do that... */
return 0;
}
void
evdev_init_natural_scroll(struct evdev_device *device)
{
device->scroll.config_natural.has = evdev_scroll_config_natural_has;
device->scroll.config_natural.set_enabled = evdev_scroll_config_natural_set;
device->scroll.config_natural.get_enabled = evdev_scroll_config_natural_get;
device->scroll.config_natural.get_default_enabled = evdev_scroll_config_natural_get_default;
device->scroll.natural_scrolling_enabled = false;
device->base.config.natural_scroll = &device->scroll.config_natural;
}
static int
evdev_rotation_config_is_available(struct libinput_device *device)
{
/* This function only gets called when we support rotation */
return 1;
}
static enum libinput_config_status
evdev_rotation_config_set_angle(struct libinput_device *libinput_device,
unsigned int degrees_cw)
{
struct evdev_device *device = evdev_device(libinput_device);
struct fallback_dispatch *dispatch = fallback_dispatch(device->dispatch);
dispatch->rotation.angle = degrees_cw;
matrix_init_rotate(&dispatch->rotation.matrix, degrees_cw);
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static unsigned int
evdev_rotation_config_get_angle(struct libinput_device *libinput_device)
{
struct evdev_device *device = evdev_device(libinput_device);
struct fallback_dispatch *dispatch = fallback_dispatch(device->dispatch);
return dispatch->rotation.angle;
}
static unsigned int
evdev_rotation_config_get_default_angle(struct libinput_device *device)
{
return 0;
}
static void
evdev_init_rotation(struct evdev_device *device,
struct fallback_dispatch *dispatch)
{
if ((device->model_flags & EVDEV_MODEL_TRACKBALL) == 0)
return;
dispatch->rotation.config.is_available = evdev_rotation_config_is_available;
dispatch->rotation.config.set_angle = evdev_rotation_config_set_angle;
dispatch->rotation.config.get_angle = evdev_rotation_config_get_angle;
dispatch->rotation.config.get_default_angle = evdev_rotation_config_get_default_angle;
dispatch->rotation.is_enabled = false;
matrix_init_identity(&dispatch->rotation.matrix);
device->base.config.rotation = &dispatch->rotation.config;
}
static inline int
evdev_need_mtdev(struct evdev_device *device)
{
struct libevdev *evdev = device->evdev;
return (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) &&
libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y) &&
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_SLOT));
}
/* Fake MT devices have the ABS_MT_SLOT bit set because of
the limited ABS_* range - they aren't MT devices, they
just have too many ABS_ axes */
static inline bool
evdev_is_fake_mt_device(struct evdev_device *device)
{
struct libevdev *evdev = device->evdev;
return libevdev_has_event_code(evdev, EV_ABS, ABS_MT_SLOT) &&
libevdev_get_num_slots(evdev) == -1;
}
static inline int
fallback_dispatch_init_slots(struct fallback_dispatch *dispatch,
struct evdev_device *device)
{
struct libevdev *evdev = device->evdev;
struct mt_slot *slots;
int num_slots;
int active_slot;
int slot;
if (evdev_is_fake_mt_device(device) ||
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) ||
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y))
return 0;
/* We only handle the slotted Protocol B in libinput.
Devices with ABS_MT_POSITION_* but not ABS_MT_SLOT
require mtdev for conversion. */
if (evdev_need_mtdev(device)) {
device->mtdev = mtdev_new_open(device->fd);
if (!device->mtdev)
return -1;
/* pick 10 slots as default for type A
devices. */
num_slots = 10;
active_slot = device->mtdev->caps.slot.value;
} else {
num_slots = libevdev_get_num_slots(device->evdev);
active_slot = libevdev_get_current_slot(evdev);
}
slots = calloc(num_slots, sizeof(struct mt_slot));
if (!slots)
return -1;
for (slot = 0; slot < num_slots; ++slot) {
slots[slot].seat_slot = -1;
if (evdev_need_mtdev(device))
continue;
slots[slot].point.x = libevdev_get_slot_value(evdev,
slot,
ABS_MT_POSITION_X);
slots[slot].point.y = libevdev_get_slot_value(evdev,
slot,
ABS_MT_POSITION_Y);
}
dispatch->mt.slots = slots;
dispatch->mt.slots_len = num_slots;
dispatch->mt.slot = active_slot;
if (device->abs.absinfo_x->fuzz || device->abs.absinfo_y->fuzz) {
dispatch->mt.want_hysteresis = true;
dispatch->mt.hysteresis_margin.x = device->abs.absinfo_x->fuzz/2;
dispatch->mt.hysteresis_margin.y = device->abs.absinfo_y->fuzz/2;
}
return 0;
}
static inline void
fallback_dispatch_init_rel(struct fallback_dispatch *dispatch,
struct evdev_device *device)
{
dispatch->rel.x = 0;
dispatch->rel.y = 0;
}
static inline void
fallback_dispatch_init_abs(struct fallback_dispatch *dispatch,
struct evdev_device *device)
{
if (!libevdev_has_event_code(device->evdev, EV_ABS, ABS_X))
return;
dispatch->abs.point.x = device->abs.absinfo_x->value;
dispatch->abs.point.y = device->abs.absinfo_y->value;
dispatch->abs.seat_slot = -1;
evdev_device_init_abs_range_warnings(device);
}
static struct evdev_dispatch *
fallback_dispatch_create(struct libinput_device *libinput_device)
{
struct fallback_dispatch *dispatch = zalloc(sizeof *dispatch);
struct evdev_device *device = evdev_device(libinput_device);
if (dispatch == NULL)
return NULL;
dispatch->base.dispatch_type = DISPATCH_FALLBACK;
dispatch->base.interface = &fallback_interface;
dispatch->pending_event = EVDEV_NONE;
fallback_dispatch_init_rel(dispatch, device);
fallback_dispatch_init_abs(dispatch, device);
if (fallback_dispatch_init_slots(dispatch, device) == -1) {
free(dispatch);
return NULL;
}
if (device->left_handed.want_enabled)
evdev_init_left_handed(device,
evdev_change_to_left_handed);
if (device->scroll.want_button)
evdev_init_button_scroll(device,
evdev_change_scroll_method);
if (device->scroll.natural_scrolling_enabled)
evdev_init_natural_scroll(device);
evdev_init_calibration(device, &dispatch->calibration);
evdev_init_sendevents(device, &dispatch->base);
evdev_init_rotation(device, dispatch);
/* BTN_MIDDLE is set on mice even when it's not present. So
* we can only use the absence of BTN_MIDDLE to mean something, i.e.
* we enable it by default on anything that only has L&R.
* If we have L&R and no middle, we don't expose it as config
* option */
if (libevdev_has_event_code(device->evdev, EV_KEY, BTN_LEFT) &&
libevdev_has_event_code(device->evdev, EV_KEY, BTN_RIGHT)) {
bool has_middle = libevdev_has_event_code(device->evdev,
EV_KEY,
BTN_MIDDLE);
bool want_config = has_middle;
bool enable_by_default = !has_middle;
evdev_init_middlebutton(device,
enable_by_default,
want_config);
}
return &dispatch->base;
}
static inline void
evdev_process_event(struct evdev_device *device, struct input_event *e)
{
struct evdev_dispatch *dispatch = device->dispatch;
uint64_t time = s2us(e->time.tv_sec) + e->time.tv_usec;
#if 0
if (libevdev_event_is_code(e, EV_SYN, SYN_REPORT))
log_debug(evdev_libinput_context(device),
"-------------- EV_SYN ------------\n");
else
log_debug(evdev_libinput_context(device),
"%-7s %-16s %-20s %4d\n",
evdev_device_get_sysname(device),
libevdev_event_type_get_name(e->type),
libevdev_event_code_get_name(e->type, e->code),
e->value);
#endif
dispatch->interface->process(dispatch, device, e, time);
}
static inline void
evdev_device_dispatch_one(struct evdev_device *device,
struct input_event *ev)
{
if (!device->mtdev) {
evdev_process_event(device, ev);
} else {
mtdev_put_event(device->mtdev, ev);
if (libevdev_event_is_code(ev, EV_SYN, SYN_REPORT)) {
while (!mtdev_empty(device->mtdev)) {
struct input_event e;
mtdev_get_event(device->mtdev, &e);
evdev_process_event(device, &e);
}
}
}
}
static int
evdev_sync_device(struct evdev_device *device)
{
struct input_event ev;
int rc;
do {
rc = libevdev_next_event(device->evdev,
LIBEVDEV_READ_FLAG_SYNC, &ev);
if (rc < 0)
break;
evdev_device_dispatch_one(device, &ev);
} while (rc == LIBEVDEV_READ_STATUS_SYNC);
return rc == -EAGAIN ? 0 : rc;
}
static void
evdev_device_dispatch(void *data)
{
struct evdev_device *device = data;
struct libinput *libinput = evdev_libinput_context(device);
struct input_event ev;
int rc;
/* If the compositor is repainting, this function is called only once
* per frame and we have to process all the events available on the
* fd, otherwise there will be input lag. */
do {
rc = libevdev_next_event(device->evdev,
LIBEVDEV_READ_FLAG_NORMAL, &ev);
if (rc == LIBEVDEV_READ_STATUS_SYNC) {
log_info_ratelimit(libinput,
&device->syn_drop_limit,
"SYN_DROPPED event from \"%s\" - some input events have been lost.\n",
device->devname);
/* send one more sync event so we handle all
currently pending events before we sync up
to the current state */
ev.code = SYN_REPORT;
evdev_device_dispatch_one(device, &ev);
rc = evdev_sync_device(device);
if (rc == 0)
rc = LIBEVDEV_READ_STATUS_SUCCESS;
} else if (rc == LIBEVDEV_READ_STATUS_SUCCESS) {
evdev_device_dispatch_one(device, &ev);
}
} while (rc == LIBEVDEV_READ_STATUS_SUCCESS);
if (rc != -EAGAIN && rc != -EINTR) {
libinput_remove_source(libinput, device->source);
device->source = NULL;
}
}
static inline bool
evdev_init_accel(struct evdev_device *device,
enum libinput_config_accel_profile which)
{
struct motion_filter *filter;
if (which == LIBINPUT_CONFIG_ACCEL_PROFILE_FLAT)
filter = create_pointer_accelerator_filter_flat(device->dpi);
else if (device->tags & EVDEV_TAG_TRACKPOINT)
filter = create_pointer_accelerator_filter_trackpoint(device->dpi);
else if (device->dpi < DEFAULT_MOUSE_DPI)
filter = create_pointer_accelerator_filter_linear_low_dpi(device->dpi);
else
filter = create_pointer_accelerator_filter_linear(device->dpi);
if (!filter)
return false;
evdev_device_init_pointer_acceleration(device, filter);
return true;
}
static int
evdev_accel_config_available(struct libinput_device *device)
{
/* this function is only called if we set up ptraccel, so we can
reply with a resounding "Yes" */
return 1;
}
static enum libinput_config_status
evdev_accel_config_set_speed(struct libinput_device *device, double speed)
{
struct evdev_device *dev = evdev_device(device);
if (!filter_set_speed(dev->pointer.filter, speed))
return LIBINPUT_CONFIG_STATUS_INVALID;
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static double
evdev_accel_config_get_speed(struct libinput_device *device)
{
struct evdev_device *dev = evdev_device(device);
return filter_get_speed(dev->pointer.filter);
}
static double
evdev_accel_config_get_default_speed(struct libinput_device *device)
{
return 0.0;
}
static uint32_t
evdev_accel_config_get_profiles(struct libinput_device *libinput_device)
{
struct evdev_device *device = evdev_device(libinput_device);
if (!device->pointer.filter)
return LIBINPUT_CONFIG_ACCEL_PROFILE_NONE;
return LIBINPUT_CONFIG_ACCEL_PROFILE_ADAPTIVE |
LIBINPUT_CONFIG_ACCEL_PROFILE_FLAT;
}
static enum libinput_config_status
evdev_accel_config_set_profile(struct libinput_device *libinput_device,
enum libinput_config_accel_profile profile)
{
struct evdev_device *device = evdev_device(libinput_device);
struct motion_filter *filter;
double speed;
filter = device->pointer.filter;
if (filter_get_type(filter) == profile)
return LIBINPUT_CONFIG_STATUS_SUCCESS;
speed = filter_get_speed(filter);
device->pointer.filter = NULL;
if (evdev_init_accel(device, profile)) {
evdev_accel_config_set_speed(libinput_device, speed);
filter_destroy(filter);
} else {
device->pointer.filter = filter;
}
return LIBINPUT_CONFIG_STATUS_SUCCESS;
}
static enum libinput_config_accel_profile
evdev_accel_config_get_profile(struct libinput_device *libinput_device)
{
struct evdev_device *device = evdev_device(libinput_device);
return filter_get_type(device->pointer.filter);
}
static enum libinput_config_accel_profile
evdev_accel_config_get_default_profile(struct libinput_device *libinput_device)
{
struct evdev_device *device = evdev_device(libinput_device);
if (!device->pointer.filter)
return LIBINPUT_CONFIG_ACCEL_PROFILE_NONE;
/* No device has a flat profile as default */
return LIBINPUT_CONFIG_ACCEL_PROFILE_ADAPTIVE;
}
void
evdev_device_init_pointer_acceleration(struct evdev_device *device,
struct motion_filter *filter)
{
device->pointer.filter = filter;
if (device->base.config.accel == NULL) {
device->pointer.config.available = evdev_accel_config_available;
device->pointer.config.set_speed = evdev_accel_config_set_speed;
device->pointer.config.get_speed = evdev_accel_config_get_speed;
device->pointer.config.get_default_speed = evdev_accel_config_get_default_speed;
device->pointer.config.get_profiles = evdev_accel_config_get_profiles;
device->pointer.config.set_profile = evdev_accel_config_set_profile;
device->pointer.config.get_profile = evdev_accel_config_get_profile;
device->pointer.config.get_default_profile = evdev_accel_config_get_default_profile;
device->base.config.accel = &device->pointer.config;
evdev_accel_config_set_speed(&device->base,
evdev_accel_config_get_default_speed(&device->base));
}
}
static inline bool
evdev_read_wheel_click_prop(struct evdev_device *device,
const char *prop,
double *angle)
{
int val;
*angle = DEFAULT_WHEEL_CLICK_ANGLE;
prop = udev_device_get_property_value(device->udev_device, prop);
if (!prop)
return false;
val = parse_mouse_wheel_click_angle_property(prop);
if (val) {
*angle = val;
return true;
}
log_error(evdev_libinput_context(device),
"Mouse wheel click angle '%s' is present but invalid, "
"using %d degrees instead\n",
device->devname,
DEFAULT_WHEEL_CLICK_ANGLE);
return false;
}
static inline bool
evdev_read_wheel_click_count_prop(struct evdev_device *device,
const char *prop,
double *angle)
{
int val;
prop = udev_device_get_property_value(device->udev_device, prop);
if (!prop)
return false;
val = parse_mouse_wheel_click_angle_property(prop);
if (val) {
*angle = 360.0/val;
return true;
}
log_error(evdev_libinput_context(device),
"Mouse wheel click count for '%s' is present but invalid, "
"using %d degrees for angle instead instead\n",
device->devname,
DEFAULT_WHEEL_CLICK_ANGLE);
*angle = DEFAULT_WHEEL_CLICK_ANGLE;
return false;
}
static inline struct wheel_angle
evdev_read_wheel_click_props(struct evdev_device *device)
{
struct wheel_angle angles;
/* CLICK_COUNT overrides CLICK_ANGLE */
if (!evdev_read_wheel_click_count_prop(device,
"MOUSE_WHEEL_CLICK_COUNT",
&angles.x))
evdev_read_wheel_click_prop(device,
"MOUSE_WHEEL_CLICK_ANGLE",
&angles.x);
if (!evdev_read_wheel_click_count_prop(device,
"MOUSE_WHEEL_CLICK_COUNT_HORIZONTAL",
&angles.y)) {
if (!evdev_read_wheel_click_prop(device,
"MOUSE_WHEEL_CLICK_ANGLE_HORIZONTAL",
&angles.y))
angles.y = angles.x;
}
return angles;
}
static inline struct wheel_tilt_flags
evdev_read_wheel_tilt_props(struct evdev_device *device)
{
struct wheel_tilt_flags flags;
flags.vertical = parse_udev_flag(device,
device->udev_device,
"MOUSE_WHEEL_TILT_VERTICAL");
flags.horizontal = parse_udev_flag(device,
device->udev_device,
"MOUSE_WHEEL_TILT_HORIZONTAL");
return flags;
}
static inline int
evdev_get_trackpoint_dpi(struct evdev_device *device)
{
struct libinput *libinput = evdev_libinput_context(device);
const char *trackpoint_accel;
double accel = DEFAULT_TRACKPOINT_ACCEL;
trackpoint_accel = udev_device_get_property_value(
device->udev_device, "POINTINGSTICK_CONST_ACCEL");
if (trackpoint_accel) {
accel = parse_trackpoint_accel_property(trackpoint_accel);
if (accel == 0.0) {
log_error(libinput, "Trackpoint accel property for "
"'%s' is present but invalid, "
"using %.2f instead\n",
device->devname,
DEFAULT_TRACKPOINT_ACCEL);
accel = DEFAULT_TRACKPOINT_ACCEL;
}
log_info(libinput,
"Device '%s' set to const accel %.2f\n",
device->devname,
accel);
}
return DEFAULT_MOUSE_DPI / accel;
}
static inline int
evdev_read_dpi_prop(struct evdev_device *device)
{
struct libinput *libinput = evdev_libinput_context(device);
const char *mouse_dpi;
int dpi = DEFAULT_MOUSE_DPI;
/*
* Trackpoints do not have dpi, instead hwdb may contain a
* POINTINGSTICK_CONST_ACCEL value to compensate for sensitivity
* differences between models, we translate this to a fake dpi.
*/
if (device->tags & EVDEV_TAG_TRACKPOINT)
return evdev_get_trackpoint_dpi(device);
mouse_dpi = udev_device_get_property_value(device->udev_device,
"MOUSE_DPI");
if (mouse_dpi) {
dpi = parse_mouse_dpi_property(mouse_dpi);
if (!dpi) {
log_error(libinput, "Mouse DPI property for '%s' is "
"present but invalid, using %d "
"DPI instead\n",
device->devname,
DEFAULT_MOUSE_DPI);
dpi = DEFAULT_MOUSE_DPI;
}
log_info(libinput,
"Device '%s' set to %d DPI\n",
device->devname,
dpi);
}
return dpi;
}
static inline uint32_t
evdev_read_model_flags(struct evdev_device *device)
{
const struct model_map {
const char *property;
enum evdev_device_model model;
} model_map[] = {
#define MODEL(name) { "LIBINPUT_MODEL_" #name, EVDEV_MODEL_##name }
MODEL(LENOVO_X230),
MODEL(LENOVO_X230),
MODEL(LENOVO_X220_TOUCHPAD_FW81),
MODEL(CHROMEBOOK),
MODEL(SYSTEM76_BONOBO),
MODEL(SYSTEM76_GALAGO),
MODEL(SYSTEM76_KUDU),
MODEL(CLEVO_W740SU),
MODEL(APPLE_TOUCHPAD),
MODEL(WACOM_TOUCHPAD),
MODEL(ALPS_TOUCHPAD),
MODEL(SYNAPTICS_SERIAL_TOUCHPAD),
MODEL(JUMPING_SEMI_MT),
MODEL(ELANTECH_TOUCHPAD),
MODEL(APPLE_INTERNAL_KEYBOARD),
MODEL(CYBORG_RAT),
MODEL(CYAPA),
MODEL(HP_STREAM11_TOUCHPAD),
MODEL(LENOVO_T450_TOUCHPAD),
MODEL(TOUCHPAD_VISIBLE_MARKER),
MODEL(TRACKBALL),
MODEL(APPLE_MAGICMOUSE),
MODEL(HP8510_TOUCHPAD),
MODEL(HP6910_TOUCHPAD),
MODEL(HP_ZBOOK_STUDIO_G3),
MODEL(HP_PAVILION_DM4_TOUCHPAD),
MODEL(APPLE_TOUCHPAD_ONEBUTTON),
#undef MODEL
{ "ID_INPUT_TRACKBALL", EVDEV_MODEL_TRACKBALL },
{ NULL, EVDEV_MODEL_DEFAULT },
};
const struct model_map *m = model_map;
uint32_t model_flags = 0;
while (m->property) {
if (parse_udev_flag(device,
device->udev_device,
m->property)) {
log_debug(evdev_libinput_context(device),
"%s: tagged as %s\n",
evdev_device_get_sysname(device),
m->property);
model_flags |= m->model;
}
m++;
}
return model_flags;
}
static inline bool
evdev_read_attr_res_prop(struct evdev_device *device,
size_t *xres,
size_t *yres)
{
struct udev_device *udev;
const char *res_prop;
udev = device->udev_device;
res_prop = udev_device_get_property_value(udev,
"LIBINPUT_ATTR_RESOLUTION_HINT");
if (!res_prop)
return false;
return parse_dimension_property(res_prop, xres, yres);
}
static inline bool
evdev_read_attr_size_prop(struct evdev_device *device,
size_t *size_x,
size_t *size_y)
{
struct udev_device *udev;
const char *size_prop;
udev = device->udev_device;
size_prop = udev_device_get_property_value(udev,
"LIBINPUT_ATTR_SIZE_HINT");
if (!size_prop)
return false;
return parse_dimension_property(size_prop, size_x, size_y);
}
/* Return 1 if the device is set to the fake resolution or 0 otherwise */
static inline int
evdev_fix_abs_resolution(struct evdev_device *device,
unsigned int xcode,
unsigned int ycode)
{
struct libevdev *evdev = device->evdev;
const struct input_absinfo *absx, *absy;
size_t widthmm = 0, heightmm = 0;
size_t xres = EVDEV_FAKE_RESOLUTION,
yres = EVDEV_FAKE_RESOLUTION;
if (!(xcode == ABS_X && ycode == ABS_Y) &&
!(xcode == ABS_MT_POSITION_X && ycode == ABS_MT_POSITION_Y)) {
log_bug_libinput(evdev_libinput_context(device),
"Invalid x/y code combination %d/%d\n",
xcode, ycode);
return 0;
}
absx = libevdev_get_abs_info(evdev, xcode);
absy = libevdev_get_abs_info(evdev, ycode);
if (absx->resolution != 0 || absy->resolution != 0)
return 0;
/* Note: we *do not* override resolutions if provided by the kernel.
* If a device needs this, add it to 60-evdev.hwdb. The libinput
* property is only for general size hints where we can make
* educated guesses but don't know better.
*/
if (!evdev_read_attr_res_prop(device, &xres, &yres) &&
evdev_read_attr_size_prop(device, &widthmm, &heightmm)) {
xres = (absx->maximum - absx->minimum)/widthmm;
yres = (absy->maximum - absy->minimum)/heightmm;
}
/* libevdev_set_abs_resolution() changes the absinfo we already
have a pointer to, no need to fetch it again */
libevdev_set_abs_resolution(evdev, xcode, xres);
libevdev_set_abs_resolution(evdev, ycode, yres);
return xres == EVDEV_FAKE_RESOLUTION;
}
static enum evdev_device_udev_tags
evdev_device_get_udev_tags(struct evdev_device *device,
struct udev_device *udev_device)
{
enum evdev_device_udev_tags tags = 0;
const struct evdev_udev_tag_match *match;
int i;
for (i = 0; i < 2 && udev_device; i++) {
match = evdev_udev_tag_matches;
while (match->name) {
if (parse_udev_flag(device,
udev_device,
match->name))
tags |= match->tag;
match++;
}
udev_device = udev_device_get_parent(udev_device);
}
return tags;
}
static inline void
evdev_fix_android_mt(struct evdev_device *device)
{
struct libevdev *evdev = device->evdev;
if (libevdev_has_event_code(evdev, EV_ABS, ABS_X) ||
libevdev_has_event_code(evdev, EV_ABS, ABS_Y))
return;
if (!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) ||
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y) ||
evdev_is_fake_mt_device(device))
return;
libevdev_enable_event_code(evdev, EV_ABS, ABS_X,
libevdev_get_abs_info(evdev, ABS_MT_POSITION_X));
libevdev_enable_event_code(evdev, EV_ABS, ABS_Y,
libevdev_get_abs_info(evdev, ABS_MT_POSITION_Y));
}
static inline bool
evdev_check_min_max(struct evdev_device *device, unsigned int code)
{
struct libevdev *evdev = device->evdev;
const struct input_absinfo *absinfo;
if (!libevdev_has_event_code(evdev, EV_ABS, code))
return true;
absinfo = libevdev_get_abs_info(evdev, code);
if (absinfo->minimum == absinfo->maximum) {
/* Some devices have a sort-of legitimate min/max of 0 for
* ABS_MISC and above (e.g. Roccat Kone XTD). Don't ignore
* them, simply disable the axes so we won't get events,
* we don't know what to do with them anyway.
*/
if (absinfo->minimum == 0 &&
code >= ABS_MISC && code < ABS_MT_SLOT) {
log_info(evdev_libinput_context(device),
"Disabling EV_ABS %#x on device '%s' (min == max == 0)\n",
code,
device->devname);
libevdev_disable_event_code(device->evdev,
EV_ABS,
code);
} else {
log_bug_kernel(evdev_libinput_context(device),
"Device '%s' has min == max on %s\n",
device->devname,
libevdev_event_code_get_name(EV_ABS, code));
return false;
}
}
return true;
}
static bool
evdev_reject_device(struct evdev_device *device)
{
struct libinput *libinput = evdev_libinput_context(device);
struct libevdev *evdev = device->evdev;
unsigned int code;
const struct input_absinfo *absx, *absy;
if (libevdev_has_event_code(evdev, EV_ABS, ABS_X) ^
libevdev_has_event_code(evdev, EV_ABS, ABS_Y))
return true;
if (libevdev_has_event_code(evdev, EV_REL, REL_X) ^
libevdev_has_event_code(evdev, EV_REL, REL_Y))
return true;
if (!evdev_is_fake_mt_device(device) &&
libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) ^
libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y))
return true;
if (libevdev_has_event_code(evdev, EV_ABS, ABS_X)) {
absx = libevdev_get_abs_info(evdev, ABS_X);
absy = libevdev_get_abs_info(evdev, ABS_Y);
if ((absx->resolution == 0 && absy->resolution != 0) ||
(absx->resolution != 0 && absy->resolution == 0)) {
log_bug_kernel(libinput,
"Kernel has only x or y resolution, not both.\n");
return true;
}
}
if (!evdev_is_fake_mt_device(device) &&
libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X)) {
absx = libevdev_get_abs_info(evdev, ABS_MT_POSITION_X);
absy = libevdev_get_abs_info(evdev, ABS_MT_POSITION_Y);
if ((absx->resolution == 0 && absy->resolution != 0) ||
(absx->resolution != 0 && absy->resolution == 0)) {
log_bug_kernel(libinput,
"Kernel has only x or y MT resolution, not both.\n");
return true;
}
}
for (code = 0; code < ABS_CNT; code++) {
switch (code) {
case ABS_MISC:
case ABS_MT_SLOT:
case ABS_MT_TOOL_TYPE:
break;
default:
if (!evdev_check_min_max(device, code))
return true;
}
}
return false;
}
static void
evdev_extract_abs_axes(struct evdev_device *device)
{
struct libevdev *evdev = device->evdev;
if (!libevdev_has_event_code(evdev, EV_ABS, ABS_X) ||
!libevdev_has_event_code(evdev, EV_ABS, ABS_Y))
return;
if (evdev_fix_abs_resolution(device, ABS_X, ABS_Y))
device->abs.is_fake_resolution = true;
device->abs.absinfo_x = libevdev_get_abs_info(evdev, ABS_X);
device->abs.absinfo_y = libevdev_get_abs_info(evdev, ABS_Y);
device->abs.dimensions.x = abs(device->abs.absinfo_x->maximum -
device->abs.absinfo_x->minimum);
device->abs.dimensions.y = abs(device->abs.absinfo_y->maximum -
device->abs.absinfo_y->minimum);
if (evdev_is_fake_mt_device(device) ||
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) ||
!libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y))
return;
if (evdev_fix_abs_resolution(device,
ABS_MT_POSITION_X,
ABS_MT_POSITION_Y))
device->abs.is_fake_resolution = true;
device->abs.absinfo_x = libevdev_get_abs_info(evdev, ABS_MT_POSITION_X);
device->abs.absinfo_y = libevdev_get_abs_info(evdev, ABS_MT_POSITION_Y);
device->abs.dimensions.x = abs(device->abs.absinfo_x->maximum -
device->abs.absinfo_x->minimum);
device->abs.dimensions.y = abs(device->abs.absinfo_y->maximum -
device->abs.absinfo_y->minimum);
device->is_mt = 1;
}
static struct evdev_dispatch *
evdev_configure_device(struct evdev_device *device)
{
struct libinput *libinput = evdev_libinput_context(device);
struct libevdev *evdev = device->evdev;
const char *devnode = udev_device_get_devnode(device->udev_device);
enum evdev_device_udev_tags udev_tags;
unsigned int tablet_tags;
struct evdev_dispatch *dispatch;
udev_tags = evdev_device_get_udev_tags(device, device->udev_device);
if ((udev_tags & EVDEV_UDEV_TAG_INPUT) == 0 ||
(udev_tags & ~EVDEV_UDEV_TAG_INPUT) == 0) {
log_info(libinput,
"input device '%s', %s not tagged as input device\n",
device->devname, devnode);
return NULL;
}
log_info(libinput,
"input device '%s', %s is tagged by udev as:%s%s%s%s%s%s%s%s%s%s%s\n",
device->devname, devnode,
udev_tags & EVDEV_UDEV_TAG_KEYBOARD ? " Keyboard" : "",
udev_tags & EVDEV_UDEV_TAG_MOUSE ? " Mouse" : "",
udev_tags & EVDEV_UDEV_TAG_TOUCHPAD ? " Touchpad" : "",
udev_tags & EVDEV_UDEV_TAG_TOUCHSCREEN ? " Touchscreen" : "",
udev_tags & EVDEV_UDEV_TAG_TABLET ? " Tablet" : "",
udev_tags & EVDEV_UDEV_TAG_POINTINGSTICK ? " Pointingstick" : "",
udev_tags & EVDEV_UDEV_TAG_JOYSTICK ? " Joystick" : "",
udev_tags & EVDEV_UDEV_TAG_ACCELEROMETER ? " Accelerometer" : "",
udev_tags & EVDEV_UDEV_TAG_TABLET_PAD ? " TabletPad" : "",
udev_tags & EVDEV_UDEV_TAG_TRACKBALL ? " Trackball" : "",
udev_tags & EVDEV_UDEV_TAG_SWITCH ? " Switch" : "");
if (udev_tags & EVDEV_UDEV_TAG_ACCELEROMETER) {
log_info(libinput,
"input device '%s', %s is an accelerometer, ignoring\n",
device->devname, devnode);
return NULL;
}
/* libwacom *adds* TABLET, TOUCHPAD but leaves JOYSTICK in place, so
make sure we only ignore real joystick devices */
if (udev_tags == (EVDEV_UDEV_TAG_INPUT|EVDEV_UDEV_TAG_JOYSTICK)) {
log_info(libinput,
"input device '%s', %s is a joystick, ignoring\n",
device->devname, devnode);
return NULL;
}
if (evdev_reject_device(device)) {
log_info(libinput,
"input device '%s', %s was rejected.\n",
device->devname, devnode);
return NULL;
}
if (!evdev_is_fake_mt_device(device))
evdev_fix_android_mt(device);
if (libevdev_has_event_code(evdev, EV_ABS, ABS_X)) {
evdev_extract_abs_axes(device);
if (evdev_is_fake_mt_device(device))
udev_tags &= ~EVDEV_UDEV_TAG_TOUCHSCREEN;
}
/* libwacom assigns touchpad (or touchscreen) _and_ tablet to the
tablet touch bits, so make sure we don't initialize the tablet
interface for the touch device */
tablet_tags = EVDEV_UDEV_TAG_TABLET |
EVDEV_UDEV_TAG_TOUCHPAD |
EVDEV_UDEV_TAG_TOUCHSCREEN;
/* libwacom assigns tablet _and_ tablet_pad to the pad devices */
if (udev_tags & EVDEV_UDEV_TAG_TABLET_PAD) {
dispatch = evdev_tablet_pad_create(device);
device->seat_caps |= EVDEV_DEVICE_TABLET_PAD;
log_info(libinput,
"input device '%s', %s is a tablet pad\n",
device->devname, devnode);
return dispatch;
} else if ((udev_tags & tablet_tags) == EVDEV_UDEV_TAG_TABLET) {
dispatch = evdev_tablet_create(device);
device->seat_caps |= EVDEV_DEVICE_TABLET;
log_info(libinput,
"input device '%s', %s is a tablet\n",
device->devname, devnode);
return dispatch;
}
if (udev_tags & EVDEV_UDEV_TAG_TOUCHPAD) {
dispatch = evdev_mt_touchpad_create(device);
log_info(libinput,
"input device '%s', %s is a touchpad\n",
device->devname, devnode);
return dispatch;
}
if (udev_tags & EVDEV_UDEV_TAG_MOUSE ||
udev_tags & EVDEV_UDEV_TAG_POINTINGSTICK) {
evdev_tag_external_mouse(device, device->udev_device);
evdev_tag_trackpoint(device, device->udev_device);
device->dpi = evdev_read_dpi_prop(device);
device->seat_caps |= EVDEV_DEVICE_POINTER;
log_info(libinput,
"input device '%s', %s is a pointer caps\n",
device->devname, devnode);
/* want left-handed config option */
device->left_handed.want_enabled = true;
/* want natural-scroll config option */
device->scroll.natural_scrolling_enabled = true;
/* want button scrolling config option */
device->scroll.want_button = 1;
}
if (udev_tags & EVDEV_UDEV_TAG_KEYBOARD) {
device->seat_caps |= EVDEV_DEVICE_KEYBOARD;
log_info(libinput,
"input device '%s', %s is a keyboard\n",
device->devname, devnode);
/* want natural-scroll config option */
if (libevdev_has_event_code(evdev, EV_REL, REL_WHEEL) ||
libevdev_has_event_code(evdev, EV_REL, REL_HWHEEL)) {
device->scroll.natural_scrolling_enabled = true;
device->seat_caps |= EVDEV_DEVICE_POINTER;
}
evdev_tag_keyboard(device, device->udev_device);
}
if (udev_tags & EVDEV_UDEV_TAG_TOUCHSCREEN) {
device->seat_caps |= EVDEV_DEVICE_TOUCH;
log_info(libinput,
"input device '%s', %s is a touch device\n",
device->devname, devnode);
}
if (udev_tags & EVDEV_UDEV_TAG_SWITCH &&
libevdev_has_event_code(evdev, EV_SW, SW_LID)) {
dispatch = evdev_lid_switch_dispatch_create(device);
device->seat_caps |= EVDEV_DEVICE_SWITCH;
evdev_tag_lid_switch(device, device->udev_device);
log_info(libinput,
"input device '%s', %s is a switch device\n",
device->devname, devnode);
return dispatch;
}
if (device->seat_caps & EVDEV_DEVICE_POINTER &&
libevdev_has_event_code(evdev, EV_REL, REL_X) &&
libevdev_has_event_code(evdev, EV_REL, REL_Y) &&
!evdev_init_accel(device, LIBINPUT_CONFIG_ACCEL_PROFILE_ADAPTIVE)) {
log_error(libinput,
"failed to initialize pointer acceleration for %s\n",
device->devname);
return NULL;
}
return fallback_dispatch_create(&device->base);
}
static void
evdev_notify_added_device(struct evdev_device *device)
{
struct libinput_device *dev;
list_for_each(dev, &device->base.seat->devices_list, link) {
struct evdev_device *d = evdev_device(dev);
if (dev == &device->base)
continue;
/* Notify existing device d about addition of device */
if (d->dispatch->interface->device_added)
d->dispatch->interface->device_added(d, device);
/* Notify new device about existing device d */
if (device->dispatch->interface->device_added)
device->dispatch->interface->device_added(device, d);
/* Notify new device if existing device d is suspended */
if (d->is_suspended &&
device->dispatch->interface->device_suspended)
device->dispatch->interface->device_suspended(device, d);
}
notify_added_device(&device->base);
if (device->dispatch->interface->post_added)
device->dispatch->interface->post_added(device,
device->dispatch);
}
static bool
evdev_device_have_same_syspath(struct udev_device *udev_device, int fd)
{
struct udev *udev = udev_device_get_udev(udev_device);
struct udev_device *udev_device_new = NULL;
struct stat st;
bool rc = false;
if (fstat(fd, &st) < 0)
goto out;
udev_device_new = udev_device_new_from_devnum(udev, 'c', st.st_rdev);
if (!udev_device_new)
goto out;
rc = streq(udev_device_get_syspath(udev_device_new),
udev_device_get_syspath(udev_device));
out:
if (udev_device_new)
udev_device_unref(udev_device_new);
return rc;
}
static bool
evdev_set_device_group(struct evdev_device *device,
struct udev_device *udev_device)
{
struct libinput *libinput = evdev_libinput_context(device);
struct libinput_device_group *group = NULL;
const char *udev_group;
udev_group = udev_device_get_property_value(udev_device,
"LIBINPUT_DEVICE_GROUP");
if (udev_group)
group = libinput_device_group_find_group(libinput, udev_group);
if (!group) {
group = libinput_device_group_create(libinput, udev_group);
if (!group)
return false;
libinput_device_set_device_group(&device->base, group);
libinput_device_group_unref(group);
} else {
libinput_device_set_device_group(&device->base, group);
}
return true;
}
static inline void
evdev_drain_fd(int fd)
{
struct input_event ev[24];
size_t sz = sizeof ev;
while (read(fd, &ev, sz) == (int)sz) {
/* discard all pending events */
}
}
static inline void
evdev_pre_configure_model_quirks(struct evdev_device *device)
{
/* The Cyborg RAT has a mode button that cycles through event codes.
* On press, we get a release for the current mode and a press for the
* next mode:
* E: 0.000001 0004 0004 589833 # EV_MSC / MSC_SCAN 589833
* E: 0.000001 0001 0118 0000 # EV_KEY / (null) 0
* E: 0.000001 0004 0004 589834 # EV_MSC / MSC_SCAN 589834
* E: 0.000001 0001 0119 0001 # EV_KEY / (null) 1
* E: 0.000001 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- +0ms
* E: 0.705000 0004 0004 589834 # EV_MSC / MSC_SCAN 589834
* E: 0.705000 0001 0119 0000 # EV_KEY / (null) 0
* E: 0.705000 0004 0004 589835 # EV_MSC / MSC_SCAN 589835
* E: 0.705000 0001 011a 0001 # EV_KEY / (null) 1
* E: 0.705000 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- +705ms
* E: 1.496995 0004 0004 589833 # EV_MSC / MSC_SCAN 589833
* E: 1.496995 0001 0118 0001 # EV_KEY / (null) 1
* E: 1.496995 0004 0004 589835 # EV_MSC / MSC_SCAN 589835
* E: 1.496995 0001 011a 0000 # EV_KEY / (null) 0
* E: 1.496995 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- +791ms
*
* https://bugs.freedesktop.org/show_bug.cgi?id=92127
*
* Disable the event codes to avoid stuck buttons.
*/
if (device->model_flags & EVDEV_MODEL_CYBORG_RAT) {
libevdev_disable_event_code(device->evdev, EV_KEY, 0x118);
libevdev_disable_event_code(device->evdev, EV_KEY, 0x119);
libevdev_disable_event_code(device->evdev, EV_KEY, 0x11a);
}
/* The Apple MagicMouse has a touchpad built-in but the kernel still
* emulates a full 2/3 button mouse for us. Ignore anything from the
* ABS interface
*/
if (device->model_flags & EVDEV_MODEL_APPLE_MAGICMOUSE)
libevdev_disable_event_type(device->evdev, EV_ABS);
/* Claims to have double/tripletap but doesn't actually send it
* https://bugzilla.redhat.com/show_bug.cgi?id=1351285 and
* https://bugs.freedesktop.org/show_bug.cgi?id=98538
*/
if (device->model_flags &
(EVDEV_MODEL_HP8510_TOUCHPAD|EVDEV_MODEL_HP6910_TOUCHPAD)) {
libevdev_disable_event_code(device->evdev, EV_KEY, BTN_TOOL_DOUBLETAP);
libevdev_disable_event_code(device->evdev, EV_KEY, BTN_TOOL_TRIPLETAP);
}
/* Touchpad is a clickpad but INPUT_PROP_BUTTONPAD is not set, see
* fdo bug 97147. Remove when RMI4 is commonplace */
if (device->model_flags & EVDEV_MODEL_HP_STREAM11_TOUCHPAD)
libevdev_enable_property(device->evdev,
INPUT_PROP_BUTTONPAD);
/* Touchpad claims to have 4 slots but only ever sends 2
* https://bugs.freedesktop.org/show_bug.cgi?id=98100 */
if (device->model_flags & EVDEV_MODEL_HP_ZBOOK_STUDIO_G3)
libevdev_set_abs_maximum(device->evdev, ABS_MT_SLOT, 1);
}
struct evdev_device *
evdev_device_create(struct libinput_seat *seat,
struct udev_device *udev_device)
{
struct libinput *libinput = seat->libinput;
struct evdev_device *device = NULL;
int rc;
int fd;
int unhandled_device = 0;
const char *devnode = udev_device_get_devnode(udev_device);
/* Use non-blocking mode so that we can loop on read on
* evdev_device_data() until all events on the fd are
* read. mtdev_get() also expects this. */
fd = open_restricted(libinput, devnode,
O_RDWR | O_NONBLOCK | O_CLOEXEC);
if (fd < 0) {
log_info(libinput,
"opening input device '%s' failed (%s).\n",
devnode, strerror(-fd));
return NULL;
}
if (!evdev_device_have_same_syspath(udev_device, fd))
goto err;
device = zalloc(sizeof *device);
if (device == NULL)
goto err;
libinput_device_init(&device->base, seat);
libinput_seat_ref(seat);
evdev_drain_fd(fd);
rc = libevdev_new_from_fd(fd, &device->evdev);
if (rc != 0)
goto err;
libevdev_set_clock_id(device->evdev, CLOCK_MONOTONIC);
device->seat_caps = 0;
device->is_mt = 0;
device->mtdev = NULL;
device->udev_device = udev_device_ref(udev_device);
device->dispatch = NULL;
device->fd = fd;
device->devname = libevdev_get_name(device->evdev);
device->scroll.threshold = 5.0; /* Default may be overridden */
device->scroll.direction_lock_threshold = 5.0; /* Default may be overridden */
device->scroll.direction = 0;
device->scroll.wheel_click_angle =
evdev_read_wheel_click_props(device);
device->scroll.is_tilt = evdev_read_wheel_tilt_props(device);
device->model_flags = evdev_read_model_flags(device);
device->dpi = DEFAULT_MOUSE_DPI;
/* at most 5 SYN_DROPPED log-messages per 30s */
ratelimit_init(&device->syn_drop_limit, s2us(30), 5);
/* at most 5 log-messages per 5s */
ratelimit_init(&device->nonpointer_rel_limit, s2us(5), 5);
matrix_init_identity(&device->abs.calibration);
matrix_init_identity(&device->abs.usermatrix);
matrix_init_identity(&device->abs.default_calibration);
evdev_pre_configure_model_quirks(device);
device->dispatch = evdev_configure_device(device);
if (device->dispatch == NULL) {
if (device->seat_caps == 0)
unhandled_device = 1;
goto err;
}
device->source =
libinput_add_fd(libinput, fd, evdev_device_dispatch, device);
if (!device->source)
goto err;
if (!evdev_set_device_group(device, udev_device))
goto err;
list_insert(seat->devices_list.prev, &device->base.link);
evdev_notify_added_device(device);
return device;
err:
if (fd >= 0)
close_restricted(libinput, fd);
if (device)
evdev_device_destroy(device);
return unhandled_device ? EVDEV_UNHANDLED_DEVICE : NULL;
}
const char *
evdev_device_get_output(struct evdev_device *device)
{
return device->output_name;
}
const char *
evdev_device_get_sysname(struct evdev_device *device)
{
return udev_device_get_sysname(device->udev_device);
}
const char *
evdev_device_get_name(struct evdev_device *device)
{
return device->devname;
}
unsigned int
evdev_device_get_id_product(struct evdev_device *device)
{
return libevdev_get_id_product(device->evdev);
}
unsigned int
evdev_device_get_id_vendor(struct evdev_device *device)
{
return libevdev_get_id_vendor(device->evdev);
}
struct udev_device *
evdev_device_get_udev_device(struct evdev_device *device)
{
return udev_device_ref(device->udev_device);
}
void
evdev_device_set_default_calibration(struct evdev_device *device,
const float calibration[6])
{
matrix_from_farray6(&device->abs.default_calibration, calibration);
evdev_device_calibrate(device, calibration);
}
void
evdev_device_calibrate(struct evdev_device *device,
const float calibration[6])
{
struct matrix scale,
translate,
transform;
double sx, sy;
matrix_from_farray6(&transform, calibration);
device->abs.apply_calibration = !matrix_is_identity(&transform);
if (!device->abs.apply_calibration) {
matrix_init_identity(&device->abs.calibration);
return;
}
sx = device->abs.absinfo_x->maximum - device->abs.absinfo_x->minimum + 1;
sy = device->abs.absinfo_y->maximum - device->abs.absinfo_y->minimum + 1;
/* The transformation matrix is in the form:
* [ a b c ]
* [ d e f ]
* [ 0 0 1 ]
* Where a, e are the scale components, a, b, d, e are the rotation
* component (combined with scale) and c and f are the translation
* component. The translation component in the input matrix must be
* normalized to multiples of the device width and height,
* respectively. e.g. c == 1 shifts one device-width to the right.
*
* We pre-calculate a single matrix to apply to event coordinates:
* M = Un-Normalize * Calibration * Normalize
*
* Normalize: scales the device coordinates to [0,1]
* Calibration: user-supplied matrix
* Un-Normalize: scales back up to device coordinates
* Matrix maths requires the normalize/un-normalize in reverse
* order.
*/
/* back up the user matrix so we can return it on request */
matrix_from_farray6(&device->abs.usermatrix, calibration);
/* Un-Normalize */
matrix_init_translate(&translate,
device->abs.absinfo_x->minimum,
device->abs.absinfo_y->minimum);
matrix_init_scale(&scale, sx, sy);
matrix_mult(&scale, &translate, &scale);
/* Calibration */
matrix_mult(&transform, &scale, &transform);
/* Normalize */
matrix_init_translate(&translate,
-device->abs.absinfo_x->minimum/sx,
-device->abs.absinfo_y->minimum/sy);
matrix_init_scale(&scale, 1.0/sx, 1.0/sy);
matrix_mult(&scale, &translate, &scale);
/* store final matrix in device */
matrix_mult(&device->abs.calibration, &transform, &scale);
}
void
evdev_read_calibration_prop(struct evdev_device *device)
{
const char *calibration_values;
float calibration[6];
int idx;
char **strv;
calibration_values =
udev_device_get_property_value(device->udev_device,
"LIBINPUT_CALIBRATION_MATRIX");
if (calibration_values == NULL)
return;
if (!device->abs.absinfo_x || !device->abs.absinfo_y)
return;
strv = strv_from_string(calibration_values, " ");
if (!strv)
return;
for (idx = 0; idx < 6; idx++) {
double v;
if (strv[idx] == NULL || !safe_atod(strv[idx], &v)) {
strv_free(strv);
return;
}
calibration[idx] = v;
}
strv_free(strv);
evdev_device_set_default_calibration(device, calibration);
log_info(evdev_libinput_context(device),
"Applying calibration: %f %f %f %f %f %f\n",
calibration[0],
calibration[1],
calibration[2],
calibration[3],
calibration[4],
calibration[5]);
}
bool
evdev_device_has_capability(struct evdev_device *device,
enum libinput_device_capability capability)
{
switch (capability) {
case LIBINPUT_DEVICE_CAP_POINTER:
return !!(device->seat_caps & EVDEV_DEVICE_POINTER);
case LIBINPUT_DEVICE_CAP_KEYBOARD:
return !!(device->seat_caps & EVDEV_DEVICE_KEYBOARD);
case LIBINPUT_DEVICE_CAP_TOUCH:
return !!(device->seat_caps & EVDEV_DEVICE_TOUCH);
case LIBINPUT_DEVICE_CAP_GESTURE:
return !!(device->seat_caps & EVDEV_DEVICE_GESTURE);
case LIBINPUT_DEVICE_CAP_TABLET_TOOL:
return !!(device->seat_caps & EVDEV_DEVICE_TABLET);
case LIBINPUT_DEVICE_CAP_TABLET_PAD:
return !!(device->seat_caps & EVDEV_DEVICE_TABLET_PAD);
case LIBINPUT_DEVICE_CAP_SWITCH:
return !!(device->seat_caps & EVDEV_DEVICE_SWITCH);
default:
return false;
}
}
int
evdev_device_get_size(const struct evdev_device *device,
double *width,
double *height)
{
const struct input_absinfo *x, *y;
x = libevdev_get_abs_info(device->evdev, ABS_X);
y = libevdev_get_abs_info(device->evdev, ABS_Y);
if (!x || !y || device->abs.is_fake_resolution ||
!x->resolution || !y->resolution)
return -1;
*width = evdev_convert_to_mm(x, x->maximum);
*height = evdev_convert_to_mm(y, y->maximum);
return 0;
}
int
evdev_device_has_button(struct evdev_device *device, uint32_t code)
{
if (!(device->seat_caps & EVDEV_DEVICE_POINTER))
return -1;
return libevdev_has_event_code(device->evdev, EV_KEY, code);
}
int
evdev_device_has_key(struct evdev_device *device, uint32_t code)
{
if (!(device->seat_caps & EVDEV_DEVICE_KEYBOARD))
return -1;
return libevdev_has_event_code(device->evdev, EV_KEY, code);
}
static inline bool
evdev_is_scrolling(const struct evdev_device *device,
enum libinput_pointer_axis axis)
{
assert(axis == LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL ||
axis == LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
return (device->scroll.direction & AS_MASK(axis)) != 0;
}
static inline void
evdev_start_scrolling(struct evdev_device *device,
enum libinput_pointer_axis axis)
{
assert(axis == LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL ||
axis == LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
device->scroll.direction |= AS_MASK(axis);
}
void
evdev_post_scroll(struct evdev_device *device,
uint64_t time,
enum libinput_pointer_axis_source source,
const struct normalized_coords *delta)
{
const struct normalized_coords *trigger;
struct normalized_coords event;
if (!evdev_is_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL))
device->scroll.buildup.y += delta->y;
if (!evdev_is_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL))
device->scroll.buildup.x += delta->x;
trigger = &device->scroll.buildup;
/* If we're not scrolling yet, use a distance trigger: moving
past a certain distance starts scrolling */
if (!evdev_is_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL) &&
!evdev_is_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL)) {
if (fabs(trigger->y) >= device->scroll.threshold)
evdev_start_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
if (fabs(trigger->x) >= device->scroll.threshold)
evdev_start_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL);
/* We're already scrolling in one direction. Require some
trigger speed to start scrolling in the other direction */
} else if (!evdev_is_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL)) {
if (fabs(delta->y) >= device->scroll.direction_lock_threshold)
evdev_start_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
} else if (!evdev_is_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL)) {
if (fabs(delta->x) >= device->scroll.direction_lock_threshold)
evdev_start_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL);
}
event = *delta;
/* We use the trigger to enable, but the delta from this event for
* the actual scroll movement. Otherwise we get a jump once
* scrolling engages */
if (!evdev_is_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL))
event.y = 0.0;
if (!evdev_is_scrolling(device,
LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL))
event.x = 0.0;
if (!normalized_is_zero(event)) {
const struct discrete_coords zero_discrete = { 0.0, 0.0 };
uint32_t axes = device->scroll.direction;
if (event.y == 0.0)
axes &= ~AS_MASK(LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL);
if (event.x == 0.0)
axes &= ~AS_MASK(LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL);
evdev_notify_axis(device,
time,
axes,
source,
&event,
&zero_discrete);
}
}
void
evdev_stop_scroll(struct evdev_device *device,
uint64_t time,
enum libinput_pointer_axis_source source)
{
const struct normalized_coords zero = { 0.0, 0.0 };
const struct discrete_coords zero_discrete = { 0.0, 0.0 };
/* terminate scrolling with a zero scroll event */
if (device->scroll.direction != 0)
pointer_notify_axis(&device->base,
time,
device->scroll.direction,
source,
&zero,
&zero_discrete);
device->scroll.buildup.x = 0;
device->scroll.buildup.y = 0;
device->scroll.direction = 0;
}
void
evdev_notify_suspended_device(struct evdev_device *device)
{
struct libinput_device *it;
if (device->is_suspended)
return;
list_for_each(it, &device->base.seat->devices_list, link) {
struct evdev_device *d = evdev_device(it);
if (it == &device->base)
continue;
if (d->dispatch->interface->device_suspended)
d->dispatch->interface->device_suspended(d, device);
}
device->is_suspended = true;
}
void
evdev_notify_resumed_device(struct evdev_device *device)
{
struct libinput_device *it;
if (!device->is_suspended)
return;
list_for_each(it, &device->base.seat->devices_list, link) {
struct evdev_device *d = evdev_device(it);
if (it == &device->base)
continue;
if (d->dispatch->interface->device_resumed)
d->dispatch->interface->device_resumed(d, device);
}
device->is_suspended = false;
}
void
evdev_device_suspend(struct evdev_device *device)
{
struct libinput *libinput = evdev_libinput_context(device);
evdev_notify_suspended_device(device);
if (device->dispatch->interface->suspend)
device->dispatch->interface->suspend(device->dispatch,
device);
if (device->source) {
libinput_remove_source(libinput, device->source);
device->source = NULL;
}
if (device->mtdev) {
mtdev_close_delete(device->mtdev);
device->mtdev = NULL;
}
if (device->fd != -1) {
close_restricted(libinput, device->fd);
device->fd = -1;
}
}
int
evdev_device_resume(struct evdev_device *device)
{
struct libinput *libinput = evdev_libinput_context(device);
int fd;
const char *devnode;
struct input_event ev;
enum libevdev_read_status status;
if (device->fd != -1)
return 0;
if (device->was_removed)
return -ENODEV;
devnode = udev_device_get_devnode(device->udev_device);
fd = open_restricted(libinput, devnode,
O_RDWR | O_NONBLOCK | O_CLOEXEC);
if (fd < 0)
return -errno;
if (!evdev_device_have_same_syspath(device->udev_device, fd)) {
close_restricted(libinput, fd);
return -ENODEV;
}
evdev_drain_fd(fd);
device->fd = fd;
if (evdev_need_mtdev(device)) {
device->mtdev = mtdev_new_open(device->fd);
if (!device->mtdev)
return -ENODEV;
}
libevdev_change_fd(device->evdev, fd);
libevdev_set_clock_id(device->evdev, CLOCK_MONOTONIC);
/* re-sync libevdev's view of the device, but discard the actual
events. Our device is in a neutral state already */
libevdev_next_event(device->evdev,
LIBEVDEV_READ_FLAG_FORCE_SYNC,
&ev);
do {
status = libevdev_next_event(device->evdev,
LIBEVDEV_READ_FLAG_SYNC,
&ev);
} while (status == LIBEVDEV_READ_STATUS_SYNC);
device->source =
libinput_add_fd(libinput, fd, evdev_device_dispatch, device);
if (!device->source) {
mtdev_close_delete(device->mtdev);
return -ENOMEM;
}
evdev_notify_resumed_device(device);
return 0;
}
void
evdev_device_remove(struct evdev_device *device)
{
struct libinput_device *dev;
list_for_each(dev, &device->base.seat->devices_list, link) {
struct evdev_device *d = evdev_device(dev);
if (dev == &device->base)
continue;
if (d->dispatch->interface->device_removed)
d->dispatch->interface->device_removed(d, device);
}
evdev_device_suspend(device);
if (device->dispatch->interface->remove)
device->dispatch->interface->remove(device->dispatch);
/* A device may be removed while suspended, mark it to
* skip re-opening a different device with the same node */
device->was_removed = true;
list_remove(&device->base.link);
notify_removed_device(&device->base);
libinput_device_unref(&device->base);
}
void
evdev_device_destroy(struct evdev_device *device)
{
struct evdev_dispatch *dispatch;
dispatch = device->dispatch;
if (dispatch)
dispatch->interface->destroy(dispatch);
if (device->base.group)
libinput_device_group_unref(device->base.group);
filter_destroy(device->pointer.filter);
libinput_seat_unref(device->base.seat);
libevdev_free(device->evdev);
udev_device_unref(device->udev_device);
free(device);
}
bool
evdev_tablet_has_left_handed(struct evdev_device *device)
{
bool has_left_handed = false;
#if HAVE_LIBWACOM
struct libinput *libinput = evdev_libinput_context(device);
WacomDeviceDatabase *db;
WacomDevice *d = NULL;
WacomError *error;
const char *devnode;
db = libwacom_database_new();
if (!db) {
log_info(libinput,
"Failed to initialize libwacom context.\n");
goto out;
}
error = libwacom_error_new();
devnode = udev_device_get_devnode(device->udev_device);
d = libwacom_new_from_path(db,
devnode,
WFALLBACK_NONE,
error);
if (d) {
if (libwacom_is_reversible(d))
has_left_handed = true;
} else if (libwacom_error_get_code(error) == WERROR_UNKNOWN_MODEL) {
log_info(libinput,
"%s: tablet unknown to libwacom\n",
device->devname);
} else {
log_error(libinput,
"libwacom error: %s\n",
libwacom_error_get_message(error));
}
if (error)
libwacom_error_free(&error);
if (d)
libwacom_destroy(d);
libwacom_database_destroy(db);
out:
#endif
return has_left_handed;
}
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