[PATCH libinput 1/4] Remove old touchpad code
Peter Hutterer
peter.hutterer at who-t.net
Thu May 22 21:37:13 PDT 2014
With the addition of software buttons for clickpads, the new touchpad code has
overtaken this driver in terms of features. The older driver was disabled in
6a6103262530d8fca66ee3847d5664824158c12b.
Signed-off-by: Peter Hutterer <peter.hutterer at who-t.net>
---
src/Makefile.am | 1 -
src/evdev-touchpad.c | 831 ---------------------------------------------------
2 files changed, 832 deletions(-)
delete mode 100644 src/evdev-touchpad.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 68e02de..50fd30f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -15,7 +15,6 @@ libinput_la_SOURCES = \
evdev-mt-touchpad.h \
evdev-mt-touchpad-tap.c \
evdev-mt-touchpad-buttons.c \
- evdev-touchpad.c \
filter.c \
filter.h \
path.h \
diff --git a/src/evdev-touchpad.c b/src/evdev-touchpad.c
deleted file mode 100644
index 18b6353..0000000
--- a/src/evdev-touchpad.c
+++ /dev/null
@@ -1,831 +0,0 @@
-/*
- * Copyright © 2012 Jonas Ådahl
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of the copyright holders not be used in
- * advertising or publicity pertaining to distribution of the software
- * without specific, written prior permission. The copyright holders make
- * no representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
- * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
- * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
- * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include "config.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-#include <stdbool.h>
-#include <time.h>
-#include <unistd.h>
-#include <linux/input.h>
-#include <sys/timerfd.h>
-
-#include "evdev.h"
-#include "filter.h"
-#include "libinput-private.h"
-
-/* Default values */
-#define DEFAULT_CONSTANT_ACCEL_NUMERATOR 50
-#define DEFAULT_MIN_ACCEL_FACTOR 0.16
-#define DEFAULT_MAX_ACCEL_FACTOR 1.0
-#define DEFAULT_HYSTERESIS_MARGIN_DENOMINATOR 700.0
-
-#define DEFAULT_TOUCHPAD_SINGLE_TAP_BUTTON BTN_LEFT
-#define DEFAULT_TOUCHPAD_SINGLE_TAP_TIMEOUT 100
-
-enum touchpad_model {
- TOUCHPAD_MODEL_UNKNOWN = 0,
- TOUCHPAD_MODEL_SYNAPTICS,
- TOUCHPAD_MODEL_ALPS,
- TOUCHPAD_MODEL_APPLETOUCH,
- TOUCHPAD_MODEL_ELANTECH
-};
-
-enum touchpad_event {
- TOUCHPAD_EVENT_NONE = 0,
- TOUCHPAD_EVENT_ABSOLUTE_ANY = (1 << 0),
- TOUCHPAD_EVENT_ABSOLUTE_X = (1 << 1),
- TOUCHPAD_EVENT_ABSOLUTE_Y = (1 << 2),
- TOUCHPAD_EVENT_REPORT = (1 << 3)
-};
-
-struct touchpad_model_spec {
- short vendor;
- short product;
- enum touchpad_model model;
-};
-
-static struct touchpad_model_spec touchpad_spec_table[] = {
- {0x0002, 0x0007, TOUCHPAD_MODEL_SYNAPTICS},
- {0x0002, 0x0008, TOUCHPAD_MODEL_ALPS},
- {0x05ac, 0x0000, TOUCHPAD_MODEL_APPLETOUCH},
- {0x0002, 0x000e, TOUCHPAD_MODEL_ELANTECH},
- {0x0000, 0x0000, TOUCHPAD_MODEL_UNKNOWN}
-};
-
-enum touchpad_state {
- TOUCHPAD_STATE_NONE = 0,
- TOUCHPAD_STATE_TOUCH = (1 << 0),
- TOUCHPAD_STATE_MOVE = (1 << 1)
-};
-
-#define TOUCHPAD_HISTORY_LENGTH 4
-#define TOUCHPAD_MIN_SAMPLES 4 /* Number of samples before we start sending events */
-
-struct touchpad_motion {
- int32_t x;
- int32_t y;
-};
-
-enum touchpad_fingers_state {
- TOUCHPAD_FINGERS_ONE = (1 << 0),
- TOUCHPAD_FINGERS_TWO = (1 << 1),
- TOUCHPAD_FINGERS_THREE = (1 << 2)
-};
-
-enum fsm_event {
- FSM_EVENT_TOUCH,
- FSM_EVENT_RELEASE,
- FSM_EVENT_MOTION,
- FSM_EVENT_TIMEOUT
-};
-
-enum fsm_state {
- FSM_IDLE,
- FSM_TOUCH,
- FSM_TAP,
- FSM_TAP_2,
- FSM_DRAG
-};
-
-struct touchpad_dispatch {
- struct evdev_dispatch base;
- struct evdev_device *device;
-
- enum touchpad_model model;
- unsigned int state;
- int finger_state;
- int last_finger_state;
-
- double constant_accel_factor;
- double min_accel_factor;
- double max_accel_factor;
-
- unsigned int event_mask;
- unsigned int event_mask_filter;
-
- int reset;
-
- struct {
- bool enable;
-
-
- enum fsm_event *events;
- size_t events_len;
- size_t events_count;
- enum fsm_state state;
- struct {
- int fd;
- struct libinput_source *source;
- } timer;
- } fsm;
-
- struct {
- int32_t x;
- int32_t y;
- } hw_abs;
-
- int has_pressure;
- struct {
- int32_t touch_low;
- int32_t touch_high;
- } pressure;
-
- struct {
- int32_t margin_x;
- int32_t margin_y;
- int32_t center_x;
- int32_t center_y;
- } hysteresis;
-
- struct touchpad_motion motion_history[TOUCHPAD_HISTORY_LENGTH];
- int motion_index;
- unsigned int motion_count;
-
- struct motion_filter *filter;
-};
-
-static enum touchpad_model
-get_touchpad_model(struct evdev_device *device)
-{
- int vendor, product;
- unsigned int i;
-
- vendor = libevdev_get_id_vendor(device->evdev);
- product = libevdev_get_id_product(device->evdev);
-
- for (i = 0; i < ARRAY_LENGTH(touchpad_spec_table); i++)
- if (touchpad_spec_table[i].vendor == vendor &&
- (!touchpad_spec_table[i].product ||
- touchpad_spec_table[i].product == product))
- return touchpad_spec_table[i].model;
-
- return TOUCHPAD_MODEL_UNKNOWN;
-}
-
-static void
-configure_touchpad_pressure(struct touchpad_dispatch *touchpad,
- int32_t pressure_min, int32_t pressure_max)
-{
- int32_t range = pressure_max - pressure_min + 1;
-
- touchpad->has_pressure = 1;
-
- /* Magic numbers from xf86-input-synaptics */
- switch (touchpad->model) {
- case TOUCHPAD_MODEL_ELANTECH:
- touchpad->pressure.touch_low = pressure_min + 1;
- touchpad->pressure.touch_high = pressure_min + 1;
- break;
- default:
- touchpad->pressure.touch_low =
- pressure_min + range * (25.0/256.0);
- touchpad->pressure.touch_high =
- pressure_min + range * (30.0/256.0);
- }
-}
-
-static double
-touchpad_profile(struct motion_filter *filter,
- void *data,
- double velocity,
- uint64_t time)
-{
- struct touchpad_dispatch *touchpad =
- (struct touchpad_dispatch *) data;
-
- double accel_factor;
-
- accel_factor = velocity * touchpad->constant_accel_factor;
-
- if (accel_factor > touchpad->max_accel_factor)
- accel_factor = touchpad->max_accel_factor;
- else if (accel_factor < touchpad->min_accel_factor)
- accel_factor = touchpad->min_accel_factor;
-
- return accel_factor;
-}
-
-static inline struct touchpad_motion *
-motion_history_offset(struct touchpad_dispatch *touchpad, int offset)
-{
- int offset_index =
- (touchpad->motion_index - offset + TOUCHPAD_HISTORY_LENGTH) %
- TOUCHPAD_HISTORY_LENGTH;
-
- return &touchpad->motion_history[offset_index];
-}
-
-static double
-estimate_delta(int x0, int x1, int x2, int x3)
-{
- return (x0 + x1 - x2 - x3) / 4;
-}
-
-static int
-hysteresis(int in, int center, int margin)
-{
- int diff = in - center;
- if (abs(diff) <= margin)
- return center;
-
- if (diff > margin)
- return center + diff - margin;
- else if (diff < -margin)
- return center + diff + margin;
- return center + diff;
-}
-
-static void
-touchpad_get_delta(struct touchpad_dispatch *touchpad, double *dx, double *dy)
-{
- *dx = estimate_delta(motion_history_offset(touchpad, 0)->x,
- motion_history_offset(touchpad, 1)->x,
- motion_history_offset(touchpad, 2)->x,
- motion_history_offset(touchpad, 3)->x);
- *dy = estimate_delta(motion_history_offset(touchpad, 0)->y,
- motion_history_offset(touchpad, 1)->y,
- motion_history_offset(touchpad, 2)->y,
- motion_history_offset(touchpad, 3)->y);
-}
-
-static void
-filter_motion(struct touchpad_dispatch *touchpad,
- double *dx, double *dy, uint64_t time)
-{
- struct motion_params motion;
-
- motion.dx = *dx;
- motion.dy = *dy;
-
- filter_dispatch(touchpad->filter, &motion, touchpad, time);
-
- *dx = motion.dx;
- *dy = motion.dy;
-}
-
-static void
-notify_button_pressed(struct touchpad_dispatch *touchpad, uint64_t time)
-{
- pointer_notify_button(
- &touchpad->device->base,
- time,
- DEFAULT_TOUCHPAD_SINGLE_TAP_BUTTON,
- LIBINPUT_POINTER_BUTTON_STATE_PRESSED);
-}
-
-static void
-notify_button_released(struct touchpad_dispatch *touchpad, uint64_t time)
-{
- pointer_notify_button(
- &touchpad->device->base,
- time,
- DEFAULT_TOUCHPAD_SINGLE_TAP_BUTTON,
- LIBINPUT_POINTER_BUTTON_STATE_RELEASED);
-}
-
-static void
-notify_tap(struct touchpad_dispatch *touchpad, uint64_t time)
-{
- notify_button_pressed(touchpad, time);
- notify_button_released(touchpad, time);
-}
-
-static void
-process_fsm_events(struct touchpad_dispatch *touchpad, uint64_t time)
-{
- uint64_t timeout = UINT64_MAX;
- enum fsm_event event;
- unsigned int i;
-
- if (!touchpad->fsm.enable)
- return;
-
- if (touchpad->fsm.events_count == 0)
- return;
-
- for (i = 0; i < touchpad->fsm.events_count; ++i) {
- event = touchpad->fsm.events[i];
- timeout = 0;
-
- switch (touchpad->fsm.state) {
- case FSM_IDLE:
- switch (event) {
- case FSM_EVENT_TOUCH:
- touchpad->fsm.state = FSM_TOUCH;
- break;
- default:
- break;
- }
- break;
- case FSM_TOUCH:
- switch (event) {
- case FSM_EVENT_RELEASE:
- timeout = DEFAULT_TOUCHPAD_SINGLE_TAP_TIMEOUT;
- touchpad->fsm.state = FSM_TAP;
- break;
- default:
- touchpad->fsm.state = FSM_IDLE;
- break;
- }
- break;
- case FSM_TAP:
- switch (event) {
- case FSM_EVENT_TIMEOUT:
- notify_tap(touchpad, time);
- touchpad->fsm.state = FSM_IDLE;
- break;
- case FSM_EVENT_TOUCH:
- notify_button_pressed(touchpad, time);
- touchpad->fsm.state = FSM_TAP_2;
- break;
- default:
- touchpad->fsm.state = FSM_IDLE;
- break;
- }
- break;
- case FSM_TAP_2:
- switch (event) {
- case FSM_EVENT_MOTION:
- touchpad->fsm.state = FSM_DRAG;
- break;
- case FSM_EVENT_RELEASE:
- notify_button_released(touchpad, time);
- notify_tap(touchpad, time);
- touchpad->fsm.state = FSM_IDLE;
- break;
- default:
- touchpad->fsm.state = FSM_IDLE;
- break;
- }
- break;
- case FSM_DRAG:
- switch (event) {
- case FSM_EVENT_RELEASE:
- notify_button_released(touchpad, time);
- touchpad->fsm.state = FSM_IDLE;
- break;
- default:
- touchpad->fsm.state = FSM_IDLE;
- break;
- }
- break;
- default:
- touchpad->fsm.state = FSM_IDLE;
- break;
- }
- }
-
- if (timeout != UINT64_MAX) {
- struct itimerspec its;
-
- its.it_interval.tv_sec = 0;
- its.it_interval.tv_nsec = 0;
- its.it_value.tv_sec = timeout / 1000;
- its.it_value.tv_nsec = (timeout % 1000) * 1000 * 1000;
- timerfd_settime(touchpad->fsm.timer.fd, 0, &its, NULL);
- }
-
- touchpad->fsm.events_count = 0;
-}
-
-static void
-push_fsm_event(struct touchpad_dispatch *touchpad,
- enum fsm_event event)
-{
- enum fsm_event *events;
- size_t new_len = touchpad->fsm.events_len;
-
- if (!touchpad->fsm.enable)
- return;
-
- if (touchpad->fsm.events_count + 1 >= touchpad->fsm.events_len) {
- if (new_len == 0)
- new_len = 4;
- else
- new_len *= 2;
- events = realloc(touchpad->fsm.events,
- sizeof(enum fsm_event) * new_len);
- if (!events) {
- touchpad->fsm.state = FSM_IDLE;
- return;
- }
-
- touchpad->fsm.events = events;
- touchpad->fsm.events_len = new_len;
- }
-
- touchpad->fsm.events[touchpad->fsm.events_count++] = event;
-}
-
-static void
-fsm_timeout_handler(void *data)
-{
- struct touchpad_dispatch *touchpad = data;
- uint64_t expires;
- int len;
- struct timespec ts;
- uint64_t now;
-
- len = read(touchpad->fsm.timer.fd, &expires, sizeof expires);
- if (len != sizeof expires)
- /* This will only happen if the application made the fd
- * non-blocking, but this function should only be called
- * upon the timeout, so lets continue anyway. */
- log_error("timerfd read error: %m\n");
-
- if (touchpad->fsm.events_count == 0) {
- clock_gettime(CLOCK_MONOTONIC, &ts);
- now = ts.tv_sec * 1000ULL + ts.tv_nsec / 1000000;
-
- push_fsm_event(touchpad, FSM_EVENT_TIMEOUT);
- process_fsm_events(touchpad, now);
- }
-}
-
-static void
-touchpad_update_state(struct touchpad_dispatch *touchpad, uint64_t time)
-{
- int motion_index;
- int center_x, center_y;
- double dx = 0.0, dy = 0.0;
- struct libinput_device *base = &touchpad->device->base;
-
- if (touchpad->reset ||
- touchpad->last_finger_state != touchpad->finger_state) {
- touchpad->reset = 0;
- touchpad->motion_count = 0;
- touchpad->event_mask = TOUCHPAD_EVENT_NONE;
- touchpad->event_mask_filter =
- TOUCHPAD_EVENT_ABSOLUTE_X | TOUCHPAD_EVENT_ABSOLUTE_Y;
-
- touchpad->last_finger_state = touchpad->finger_state;
-
- process_fsm_events(touchpad, time);
-
- return;
- }
- touchpad->last_finger_state = touchpad->finger_state;
-
- if (!(touchpad->event_mask & TOUCHPAD_EVENT_REPORT))
- return;
- else
- touchpad->event_mask &= ~TOUCHPAD_EVENT_REPORT;
-
- if ((touchpad->event_mask & touchpad->event_mask_filter) !=
- touchpad->event_mask_filter)
- return;
-
- touchpad->event_mask_filter = TOUCHPAD_EVENT_ABSOLUTE_ANY;
- touchpad->event_mask = 0;
-
- /* Avoid noise by moving center only when delta reaches a threshold
- * distance from the old center. */
- if (touchpad->motion_count > 0) {
- center_x = hysteresis(touchpad->hw_abs.x,
- touchpad->hysteresis.center_x,
- touchpad->hysteresis.margin_x);
- center_y = hysteresis(touchpad->hw_abs.y,
- touchpad->hysteresis.center_y,
- touchpad->hysteresis.margin_y);
- } else {
- center_x = touchpad->hw_abs.x;
- center_y = touchpad->hw_abs.y;
- }
- touchpad->hysteresis.center_x = center_x;
- touchpad->hysteresis.center_y = center_y;
- touchpad->hw_abs.x = center_x;
- touchpad->hw_abs.y = center_y;
-
- /* Update motion history tracker */
- motion_index = (touchpad->motion_index + 1) % TOUCHPAD_HISTORY_LENGTH;
- touchpad->motion_index = motion_index;
- touchpad->motion_history[motion_index].x = touchpad->hw_abs.x;
- touchpad->motion_history[motion_index].y = touchpad->hw_abs.y;
- if (touchpad->motion_count < TOUCHPAD_HISTORY_LENGTH)
- touchpad->motion_count++;
-
- if (touchpad->motion_count >= TOUCHPAD_MIN_SAMPLES) {
- touchpad_get_delta(touchpad, &dx, &dy);
-
- filter_motion(touchpad, &dx, &dy, time);
-
- if (touchpad->finger_state == TOUCHPAD_FINGERS_ONE) {
- if (dx != 0 || dy != 0)
- pointer_notify_motion(
- base,
- time,
- li_fixed_from_double(dx),
- li_fixed_from_double(dy));
- } else if (touchpad->finger_state == TOUCHPAD_FINGERS_TWO) {
- if (dx != 0.0)
- pointer_notify_axis(
- base,
- time,
- LIBINPUT_POINTER_AXIS_HORIZONTAL_SCROLL,
- li_fixed_from_double(dx));
- if (dy != 0.0)
- pointer_notify_axis(
- base,
- time,
- LIBINPUT_POINTER_AXIS_VERTICAL_SCROLL,
- li_fixed_from_double(dy));
- }
- }
-
- if (!(touchpad->state & TOUCHPAD_STATE_MOVE) &&
- ((int)dx || (int)dy)) {
- touchpad->state |= TOUCHPAD_STATE_MOVE;
- push_fsm_event(touchpad, FSM_EVENT_MOTION);
- }
-
- process_fsm_events(touchpad, time);
-}
-
-static void
-on_touch(struct touchpad_dispatch *touchpad)
-{
- touchpad->state |= TOUCHPAD_STATE_TOUCH;
-
- push_fsm_event(touchpad, FSM_EVENT_TOUCH);
-}
-
-static void
-on_release(struct touchpad_dispatch *touchpad)
-{
-
- touchpad->reset = 1;
- touchpad->state &= ~(TOUCHPAD_STATE_MOVE | TOUCHPAD_STATE_TOUCH);
-
- push_fsm_event(touchpad, FSM_EVENT_RELEASE);
-}
-
-static inline void
-process_absolute(struct touchpad_dispatch *touchpad,
- struct evdev_device *device,
- struct input_event *e)
-{
- switch (e->code) {
- case ABS_PRESSURE:
- if (e->value > touchpad->pressure.touch_high &&
- !(touchpad->state & TOUCHPAD_STATE_TOUCH))
- on_touch(touchpad);
- else if (e->value < touchpad->pressure.touch_low &&
- touchpad->state & TOUCHPAD_STATE_TOUCH)
- on_release(touchpad);
-
- break;
- case ABS_X:
- if (touchpad->state & TOUCHPAD_STATE_TOUCH) {
- touchpad->hw_abs.x = e->value;
- touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_ANY;
- touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_X;
- }
- break;
- case ABS_Y:
- if (touchpad->state & TOUCHPAD_STATE_TOUCH) {
- touchpad->hw_abs.y = e->value;
- touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_ANY;
- touchpad->event_mask |= TOUCHPAD_EVENT_ABSOLUTE_Y;
- }
- break;
- }
-}
-
-static inline void
-process_key(struct touchpad_dispatch *touchpad,
- struct evdev_device *device,
- struct input_event *e,
- uint64_t time)
-{
- uint32_t code;
-
- switch (e->code) {
- case BTN_TOUCH:
- if (!touchpad->has_pressure) {
- if (e->value && !(touchpad->state & TOUCHPAD_STATE_TOUCH))
- on_touch(touchpad);
- else if (!e->value)
- on_release(touchpad);
- }
- break;
- case BTN_LEFT:
- case BTN_RIGHT:
- case BTN_MIDDLE:
- case BTN_SIDE:
- case BTN_EXTRA:
- case BTN_FORWARD:
- case BTN_BACK:
- case BTN_TASK:
- if (!touchpad->fsm.enable && e->code == BTN_LEFT &&
- touchpad->finger_state == TOUCHPAD_FINGERS_TWO)
- code = BTN_RIGHT;
- else
- code = e->code;
- pointer_notify_button(
- &touchpad->device->base,
- time,
- code,
- e->value ? LIBINPUT_POINTER_BUTTON_STATE_PRESSED :
- LIBINPUT_POINTER_BUTTON_STATE_RELEASED);
- break;
- 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:
- touchpad->reset = 1;
- break;
- case BTN_TOOL_FINGER:
- if (e->value)
- touchpad->finger_state |= TOUCHPAD_FINGERS_ONE;
- else
- touchpad->finger_state &= ~TOUCHPAD_FINGERS_ONE;
- break;
- case BTN_TOOL_DOUBLETAP:
- if (e->value)
- touchpad->finger_state |= TOUCHPAD_FINGERS_TWO;
- else
- touchpad->finger_state &= ~TOUCHPAD_FINGERS_TWO;
- break;
- case BTN_TOOL_TRIPLETAP:
- if (e->value)
- touchpad->finger_state |= TOUCHPAD_FINGERS_THREE;
- else
- touchpad->finger_state &= ~TOUCHPAD_FINGERS_THREE;
- break;
- }
-}
-
-static void
-touchpad_process(struct evdev_dispatch *dispatch,
- struct evdev_device *device,
- struct input_event *e,
- uint64_t time)
-{
- struct touchpad_dispatch *touchpad =
- (struct touchpad_dispatch *) dispatch;
-
- switch (e->type) {
- case EV_SYN:
- if (e->code == SYN_REPORT)
- touchpad->event_mask |= TOUCHPAD_EVENT_REPORT;
- break;
- case EV_ABS:
- process_absolute(touchpad, device, e);
- break;
- case EV_KEY:
- process_key(touchpad, device, e, time);
- break;
- }
-
- touchpad_update_state(touchpad, time);
-}
-
-static void
-touchpad_destroy(struct evdev_dispatch *dispatch)
-{
- struct touchpad_dispatch *touchpad =
- (struct touchpad_dispatch *) dispatch;
- struct libinput *libinput = touchpad->device->base.seat->libinput;
-
- touchpad->filter->interface->destroy(touchpad->filter);
- close(touchpad->fsm.timer.fd);
- libinput_remove_source(libinput, touchpad->fsm.timer.source);
- free(touchpad->fsm.events);
- free(dispatch);
-}
-
-struct evdev_dispatch_interface touchpad_interface = {
- touchpad_process,
- touchpad_destroy
-};
-
-static int
-touchpad_init(struct touchpad_dispatch *touchpad,
- struct evdev_device *device)
-{
- struct motion_filter *accel;
-
- const struct input_absinfo *absinfo;
-
- bool has_buttonpad;
-
- double width;
- double height;
- double diagonal;
-
- touchpad->base.interface = &touchpad_interface;
- touchpad->device = device;
-
- /* Detect model */
- touchpad->model = get_touchpad_model(device);
-
- has_buttonpad = libevdev_has_property(device->evdev, INPUT_PROP_BUTTONPAD);
-
- /* Configure pressure */
- if ((absinfo = libevdev_get_abs_info(device->evdev, ABS_PRESSURE))) {
- configure_touchpad_pressure(touchpad,
- absinfo->minimum,
- absinfo->maximum);
- }
-
- /* Configure acceleration factor */
- width = abs(device->abs.max_x - device->abs.min_x);
- height = abs(device->abs.max_y - device->abs.min_y);
- diagonal = sqrt(width*width + height*height);
-
- /* Set default parameters */
- touchpad->constant_accel_factor =
- DEFAULT_CONSTANT_ACCEL_NUMERATOR / diagonal;
- touchpad->min_accel_factor = DEFAULT_MIN_ACCEL_FACTOR;
- touchpad->max_accel_factor = DEFAULT_MAX_ACCEL_FACTOR;
-
- touchpad->hysteresis.margin_x =
- diagonal / DEFAULT_HYSTERESIS_MARGIN_DENOMINATOR;
- touchpad->hysteresis.margin_y =
- diagonal / DEFAULT_HYSTERESIS_MARGIN_DENOMINATOR;
- touchpad->hysteresis.center_x = 0;
- touchpad->hysteresis.center_y = 0;
-
- /* Configure acceleration profile */
- accel = create_pointer_accelator_filter(touchpad_profile);
- if (accel == NULL)
- return -1;
- touchpad->filter = accel;
-
- /* Setup initial state */
- touchpad->reset = 1;
-
- memset(touchpad->motion_history, 0, sizeof touchpad->motion_history);
- touchpad->motion_index = 0;
- touchpad->motion_count = 0;
-
- touchpad->state = TOUCHPAD_STATE_NONE;
- touchpad->last_finger_state = 0;
- touchpad->finger_state = 0;
-
- touchpad->fsm.events = NULL;
- touchpad->fsm.events_count = 0;
- touchpad->fsm.events_len = 0;
- touchpad->fsm.state = FSM_IDLE;
-
- touchpad->fsm.timer.fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
- touchpad->fsm.timer.source =
- libinput_add_fd(touchpad->device->base.seat->libinput,
- touchpad->fsm.timer.fd,
- fsm_timeout_handler,
- touchpad);
-
- if (touchpad->fsm.timer.source == NULL) {
- close(touchpad->fsm.timer.fd);
- accel->interface->destroy(accel);
- return -1;
- }
-
- /* Configure */
- touchpad->fsm.enable = !has_buttonpad;
-
- return 0;
-}
-
-struct evdev_dispatch *
-evdev_touchpad_create(struct evdev_device *device)
-{
- struct touchpad_dispatch *touchpad;
-
- touchpad = malloc(sizeof *touchpad);
- if (touchpad == NULL)
- return NULL;
-
- if (touchpad_init(touchpad, device) != 0) {
- free(touchpad);
- return NULL;
- }
-
- return &touchpad->base;
-}
--
1.9.0
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