Swap conditions for ARRAY_FOR_EACH()
[platform/upstream/libinput.git] / src / evdev.c
index 51ad5e3..b09bb98 100644 (file)
 
 #define DEFAULT_AXIS_STEP_DISTANCE 10
 
+enum evdev_key_type {
+       EVDEV_KEY_TYPE_NONE,
+       EVDEV_KEY_TYPE_KEY,
+       EVDEV_KEY_TYPE_BUTTON,
+};
+
+static void
+set_key_down(struct evdev_device *device, int code, int pressed)
+{
+       long_set_bit_state(device->key_mask, code, pressed);
+}
+
+static int
+is_key_down(struct evdev_device *device, int code)
+{
+       return long_bit_is_set(device->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(device->base.seat->libinput,
+                                "Key count for %s reached abnormal values\n",
+                                libevdev_event_code_get_name(EV_KEY, code));
+       }
+
+       return key_count;
+}
+
+void
+evdev_keyboard_notify_key(struct evdev_device *device,
+                         uint32_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_button(struct evdev_device *device,
+                           uint32_t time,
+                           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);
+}
+
 void
 evdev_device_led_update(struct evdev_device *device, enum libinput_led leds)
 {
@@ -89,13 +165,19 @@ transform_absolute(struct evdev_device *device, int32_t *x, int32_t *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 (x - device->abs.min_x) * width /
-               (device->abs.max_x - device->abs.min_x + 1);
+       return scale_axis(device->abs.absinfo_x, x, width);
 }
 
 double
@@ -103,13 +185,13 @@ evdev_device_transform_y(struct evdev_device *device,
                         double y,
                         uint32_t height)
 {
-       return (y - device->abs.min_y) * height /
-               (device->abs.max_y - device->abs.min_y + 1);
+       return scale_axis(device->abs.absinfo_y, y, height);
 }
 
 static void
 evdev_flush_pending_event(struct evdev_device *device, uint64_t time)
 {
+       struct libinput *libinput = device->base.seat->libinput;
        struct motion_params motion;
        int32_t cx, cy;
        double x, y;
@@ -142,7 +224,8 @@ evdev_flush_pending_event(struct evdev_device *device, uint64_t time)
                        break;
 
                if (device->mt.slots[slot].seat_slot != -1) {
-                       log_bug_kernel("%s: Driver sent multiple touch down for the "
+                       log_bug_kernel(libinput,
+                                      "%s: Driver sent multiple touch down for the "
                                       "same slot", device->devnode);
                        break;
                }
@@ -191,7 +274,8 @@ evdev_flush_pending_event(struct evdev_device *device, uint64_t time)
                        break;
 
                if (device->abs.seat_slot != -1) {
-                       log_bug_kernel("%s: Driver sent multiple touch down for the "
+                       log_bug_kernel(libinput,
+                                      "%s: Driver sent multiple touch down for the "
                                       "same slot", device->devnode);
                        break;
                }
@@ -246,6 +330,23 @@ evdev_flush_pending_event(struct evdev_device *device, uint64_t time)
        device->pending_event = EVDEV_NONE;
 }
 
+static enum evdev_key_type
+get_key_type(uint16_t code)
+{
+       if (code == 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_TRIGGER_HAPPY40)
+               return EVDEV_KEY_TYPE_BUTTON;
+       return EVDEV_KEY_TYPE_NONE;
+}
+
 static void
 evdev_process_touch_button(struct evdev_device *device,
                           uint64_t time, int value)
@@ -263,13 +364,12 @@ static inline void
 evdev_process_key(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 > KEY_MAX)
-               return;
-
        if (e->code == BTN_TOUCH) {
                if (!device->is_mt)
                        evdev_process_touch_button(device, time, e->value);
@@ -278,35 +378,41 @@ evdev_process_key(struct evdev_device *device,
 
        evdev_flush_pending_event(device, time);
 
-       switch (e->code) {
-       case BTN_LEFT:
-       case BTN_RIGHT:
-       case BTN_MIDDLE:
-       case BTN_SIDE:
-       case BTN_EXTRA:
-       case BTN_FORWARD:
-       case BTN_BACK:
-       case BTN_TASK:
-               pointer_notify_button(
-                       &device->base,
-                       time,
-                       e->code,
-                       e->value ? LIBINPUT_BUTTON_STATE_PRESSED :
-                                  LIBINPUT_BUTTON_STATE_RELEASED);
-               break;
+       type = get_key_type(e->code);
 
-       default:
-               /* Only let KEY_* codes pass through. */
-               if (!(e->code <= KEY_MICMUTE ||
-                     (e->code >= KEY_OK && e->code <= KEY_LIGHTS_TOGGLE)))
+       /* 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 (!is_key_down(device, e->code))
+                               return;
+               }
+       }
 
-               keyboard_notify_key(
-                       &device->base,
+       set_key_down(device, e->code, e->value);
+
+       switch (type) {
+       case EVDEV_KEY_TYPE_NONE:
+               break;
+       case EVDEV_KEY_TYPE_KEY:
+               evdev_keyboard_notify_key(
+                       device,
                        time,
                        e->code,
-                       e->value ? LIBINPUT_KEYBOARD_KEY_STATE_PRESSED :
-                                  LIBINPUT_KEYBOARD_KEY_STATE_RELEASED);
+                       e->value ? LIBINPUT_KEY_STATE_PRESSED :
+                                  LIBINPUT_KEY_STATE_RELEASED);
+               break;
+       case EVDEV_KEY_TYPE_BUTTON:
+               evdev_pointer_notify_button(
+                       device,
+                       time,
+                       e->code,
+                       e->value ? LIBINPUT_BUTTON_STATE_PRESSED :
+                                  LIBINPUT_BUTTON_STATE_RELEASED);
                break;
        }
 }
@@ -385,7 +491,7 @@ evdev_process_relative(struct evdev_device *device,
                pointer_notify_axis(
                        base,
                        time,
-                       LIBINPUT_POINTER_AXIS_VERTICAL_SCROLL,
+                       LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL,
                        -1 * e->value * DEFAULT_AXIS_STEP_DISTANCE);
                break;
        case REL_HWHEEL:
@@ -398,7 +504,7 @@ evdev_process_relative(struct evdev_device *device,
                        pointer_notify_axis(
                                base,
                                time,
-                               LIBINPUT_POINTER_AXIS_HORIZONTAL_SCROLL,
+                               LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL,
                                e->value * DEFAULT_AXIS_STEP_DISTANCE);
                        break;
                default:
@@ -586,8 +692,10 @@ configure_pointer_acceleration(struct evdev_device *device)
 static int
 evdev_configure_device(struct evdev_device *device)
 {
+       struct libinput *libinput = device->base.seat->libinput;
        struct libevdev *evdev = device->evdev;
        const struct input_absinfo *absinfo;
+       struct input_absinfo fixed;
        int has_abs, has_rel, has_mt;
        int has_button, has_keyboard, has_touch;
        struct mt_slot *slots;
@@ -606,13 +714,23 @@ evdev_configure_device(struct evdev_device *device)
        if (libevdev_has_event_type(evdev, EV_ABS)) {
 
                if ((absinfo = libevdev_get_abs_info(evdev, ABS_X))) {
-                       device->abs.min_x = absinfo->minimum;
-                       device->abs.max_x = absinfo->maximum;
+                       if (absinfo->resolution == 0) {
+                               fixed = *absinfo;
+                               fixed.resolution = 1;
+                               libevdev_set_abs_info(evdev, ABS_X, &fixed);
+                               device->abs.fake_resolution = 1;
+                       }
+                       device->abs.absinfo_x = absinfo;
                        has_abs = 1;
                }
                if ((absinfo = libevdev_get_abs_info(evdev, ABS_Y))) {
-                       device->abs.min_y = absinfo->minimum;
-                       device->abs.max_y = absinfo->maximum;
+                       if (absinfo->resolution == 0) {
+                               fixed = *absinfo;
+                               fixed.resolution = 1;
+                               libevdev_set_abs_info(evdev, ABS_Y, &fixed);
+                               device->abs.fake_resolution = 1;
+                       }
+                       device->abs.absinfo_y = absinfo;
                        has_abs = 1;
                }
                 /* We only handle the slotted Protocol B in weston.
@@ -621,11 +739,25 @@ evdev_configure_device(struct evdev_device *device)
                if (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X) &&
                    libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_Y)) {
                        absinfo = libevdev_get_abs_info(evdev, ABS_MT_POSITION_X);
-                       device->abs.min_x = absinfo->minimum;
-                       device->abs.max_x = absinfo->maximum;
+                       if (absinfo->resolution == 0) {
+                               fixed = *absinfo;
+                               fixed.resolution = 1;
+                               libevdev_set_abs_info(evdev,
+                                                     ABS_MT_POSITION_X,
+                                                     &fixed);
+                               device->abs.fake_resolution = 1;
+                       }
+                       device->abs.absinfo_x = absinfo;
                        absinfo = libevdev_get_abs_info(evdev, ABS_MT_POSITION_Y);
-                       device->abs.min_y = absinfo->minimum;
-                       device->abs.max_y = absinfo->maximum;
+                       if (absinfo->resolution == 0) {
+                               fixed = *absinfo;
+                               fixed.resolution = 1;
+                               libevdev_set_abs_info(evdev,
+                                                     ABS_MT_POSITION_Y,
+                                                     &fixed);
+                               device->abs.fake_resolution = 1;
+                       }
+                       device->abs.absinfo_y = absinfo;
                        device->is_mt = 1;
                        has_touch = 1;
                        has_mt = 1;
@@ -670,25 +802,29 @@ evdev_configure_device(struct evdev_device *device)
                    !libevdev_has_event_code(evdev, EV_KEY, BTN_TOOL_PEN) &&
                    (has_abs || has_mt)) {
                        device->dispatch = evdev_mt_touchpad_create(device);
-                       log_info("input device '%s', %s is a touchpad\n",
+                       log_info(libinput,
+                                "input device '%s', %s is a touchpad\n",
                                 device->devname, device->devnode);
+                       return device->dispatch == NULL ? -1 : 0;
                }
-               for (i = KEY_ESC; i < KEY_MAX; i++) {
-                       if (i >= BTN_MISC && i < KEY_OK)
-                               continue;
+
+               for (i = 0; i < KEY_MAX; i++) {
                        if (libevdev_has_event_code(evdev, EV_KEY, i)) {
-                               has_keyboard = 1;
-                               break;
+                               switch (get_key_type(i)) {
+                               case EVDEV_KEY_TYPE_NONE:
+                                       break;
+                               case EVDEV_KEY_TYPE_KEY:
+                                       has_keyboard = 1;
+                                       break;
+                               case EVDEV_KEY_TYPE_BUTTON:
+                                       has_button = 1;
+                                       break;
+                               }
                        }
                }
+
                if (libevdev_has_event_code(evdev, EV_KEY, BTN_TOUCH))
                        has_touch = 1;
-               for (i = BTN_MISC; i < BTN_JOYSTICK; i++) {
-                       if (libevdev_has_event_code(evdev, EV_KEY, i)) {
-                               has_button = 1;
-                               break;
-                       }
-               }
        }
        if (libevdev_has_event_type(evdev, EV_LED))
                has_keyboard = 1;
@@ -699,7 +835,8 @@ evdev_configure_device(struct evdev_device *device)
 
                device->seat_caps |= EVDEV_DEVICE_POINTER;
 
-               log_info("input device '%s', %s is a pointer caps =%s%s%s\n",
+               log_info(libinput,
+                        "input device '%s', %s is a pointer caps =%s%s%s\n",
                         device->devname, device->devnode,
                         has_abs ? " absolute-motion" : "",
                         has_rel ? " relative-motion": "",
@@ -707,12 +844,14 @@ evdev_configure_device(struct evdev_device *device)
        }
        if (has_keyboard) {
                device->seat_caps |= EVDEV_DEVICE_KEYBOARD;
-               log_info("input device '%s', %s is a keyboard\n",
+               log_info(libinput,
+                        "input device '%s', %s is a keyboard\n",
                         device->devname, device->devnode);
        }
        if (has_touch && !has_button) {
                device->seat_caps |= EVDEV_DEVICE_TOUCH;
-               log_info("input device '%s', %s is a touch device\n",
+               log_info(libinput,
+                        "input device '%s', %s is a touch device\n",
                         device->devname, device->devnode);
        }
 
@@ -735,7 +874,8 @@ evdev_device_create(struct libinput_seat *seat,
         * read.  mtdev_get() also expects this. */
        fd = open_restricted(libinput, devnode, O_RDWR | O_NONBLOCK);
        if (fd < 0) {
-               log_info("opening input device '%s' failed (%s).\n",
+               log_info(libinput,
+                        "opening input device '%s' failed (%s).\n",
                         devnode, strerror(-fd));
                return NULL;
        }
@@ -745,10 +885,11 @@ evdev_device_create(struct libinput_seat *seat,
                return NULL;
 
        libinput_device_init(&device->base, seat);
+       libinput_seat_ref(seat);
 
        rc = libevdev_new_from_fd(fd, &device->evdev);
        if (rc != 0)
-               return NULL;
+               goto err;
 
        libevdev_set_clock_id(device->evdev, CLOCK_MONOTONIC);
 
@@ -765,8 +906,6 @@ evdev_device_create(struct libinput_seat *seat,
        device->pending_event = EVDEV_NONE;
        device->devname = libevdev_get_name(device->evdev);
 
-       libinput_seat_ref(seat);
-
        if (evdev_configure_device(device) == -1)
                goto err;
 
@@ -802,12 +941,8 @@ err:
 int
 evdev_device_get_keys(struct evdev_device *device, char *keys, size_t size)
 {
-       int len;
-
        memset(keys, 0, size);
-       len = ioctl(device->fd, EVIOCGKEY(size), keys);
-
-       return (len == -1) ? -errno : len;
+       return 0;
 }
 
 const char *
@@ -822,6 +957,24 @@ evdev_device_get_sysname(struct evdev_device *device)
        return device->sysname;
 }
 
+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);
+}
+
 void
 evdev_device_calibrate(struct evdev_device *device, float calibration[6])
 {
@@ -845,6 +998,65 @@ evdev_device_has_capability(struct evdev_device *device,
        }
 }
 
+int
+evdev_device_get_size(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.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;
+}
+
+static void
+release_pressed_keys(struct evdev_device *device)
+{
+       struct libinput *libinput = device->base.seat->libinput;
+       struct timespec ts;
+       uint64_t time;
+       int code;
+
+       if (clock_gettime(CLOCK_MONOTONIC, &ts) != 0) {
+               log_bug_libinput(libinput, "clock_gettime: %s\n", strerror(errno));
+               return;
+       }
+
+       time = ts.tv_sec * 1000ULL + ts.tv_nsec / 1000000;
+
+       for (code = 0; code < KEY_CNT; code++) {
+               if (get_key_down_count(device, code) > 0) {
+                       switch (get_key_type(code)) {
+                       case EVDEV_KEY_TYPE_NONE:
+                               break;
+                       case EVDEV_KEY_TYPE_KEY:
+                               keyboard_notify_key(
+                                       &device->base,
+                                       time,
+                                       code,
+                                       LIBINPUT_KEY_STATE_RELEASED);
+                               break;
+                       case EVDEV_KEY_TYPE_BUTTON:
+                               pointer_notify_button(
+                                       &device->base,
+                                       time,
+                                       code,
+                                       LIBINPUT_BUTTON_STATE_RELEASED);
+                               break;
+                       }
+               }
+       }
+}
+
 void
 evdev_device_remove(struct evdev_device *device)
 {
@@ -852,6 +1064,8 @@ evdev_device_remove(struct evdev_device *device)
                libinput_remove_source(device->base.seat->libinput,
                                       device->source);
 
+       release_pressed_keys(device);
+
        if (device->mtdev)
                mtdev_close_delete(device->mtdev);
        close_restricted(device->base.seat->libinput, device->fd);
@@ -871,7 +1085,7 @@ evdev_device_destroy(struct evdev_device *device)
        if (dispatch)
                dispatch->interface->destroy(dispatch);
 
-       motion_filter_destroy(device->pointer.filter);
+       filter_destroy(device->pointer.filter);
        libinput_seat_unref(device->base.seat);
        libevdev_free(device->evdev);
        free(device->mt.slots);