Add libinput based input device backend
While disable by default, passing --enable-libinput-backend to
./configure switches the input backend in weston's drm, fbdev and rpi
compositing backends to use libinput instead of udev-seat.c, evdev.c and
friends.
When enabled, weston now also depends on libinput >= 0.1.0.
Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
diff --git a/src/libinput-device.c b/src/libinput-device.c
new file mode 100644
index 0000000..c8a6443
--- /dev/null
+++ b/src/libinput-device.c
@@ -0,0 +1,364 @@
+/*
+ * Copyright © 2010 Intel Corporation
+ * Copyright © 2013 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 <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <linux/input.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <mtdev.h>
+#include <assert.h>
+#include <libinput.h>
+
+#include "compositor.h"
+#include "libinput-device.h"
+
+#define DEFAULT_AXIS_STEP_DISTANCE wl_fixed_from_int(10)
+
+void
+evdev_led_update(struct evdev_device *device, enum weston_led weston_leds)
+{
+ enum libinput_led leds = 0;
+
+ if (weston_leds & LED_NUM_LOCK)
+ leds |= LIBINPUT_LED_NUM_LOCK;
+ if (weston_leds & LED_CAPS_LOCK)
+ leds |= LIBINPUT_LED_CAPS_LOCK;
+ if (weston_leds & LED_SCROLL_LOCK)
+ leds |= LIBINPUT_LED_SCROLL_LOCK;
+
+ libinput_device_led_update(device->device, leds);
+}
+
+static void
+handle_keyboard_key(struct libinput_device *libinput_device,
+ struct libinput_event_keyboard *keyboard_event)
+{
+ struct evdev_device *device =
+ libinput_device_get_user_data(libinput_device);
+
+ notify_key(device->seat,
+ libinput_event_keyboard_get_time(keyboard_event),
+ libinput_event_keyboard_get_key(keyboard_event),
+ libinput_event_keyboard_get_key_state(keyboard_event),
+ STATE_UPDATE_AUTOMATIC);
+}
+
+static void
+handle_pointer_motion(struct libinput_device *libinput_device,
+ struct libinput_event_pointer *pointer_event)
+{
+ struct evdev_device *device =
+ libinput_device_get_user_data(libinput_device);
+
+ notify_motion(device->seat,
+ libinput_event_pointer_get_time(pointer_event),
+ libinput_event_pointer_get_dx(pointer_event),
+ libinput_event_pointer_get_dy(pointer_event));
+}
+
+static void
+handle_pointer_motion_absolute(
+ struct libinput_device *libinput_device,
+ struct libinput_event_pointer *pointer_event)
+{
+ struct evdev_device *device =
+ libinput_device_get_user_data(libinput_device);
+ struct weston_output *output = device->output;
+ uint32_t time;
+ wl_fixed_t x, y;
+ uint32_t width, height;
+
+ if (!output)
+ return;
+
+ time = libinput_event_pointer_get_time(pointer_event);
+ width = device->output->current_mode->width;
+ height = device->output->current_mode->height;
+
+ x = libinput_event_pointer_get_absolute_x_transformed(pointer_event,
+ width);
+ y = libinput_event_pointer_get_absolute_y_transformed(pointer_event,
+ height);
+
+ weston_output_transform_coordinate(device->output, x, y, &x, &y);
+ notify_motion_absolute(device->seat, time, x, y);
+}
+
+static void
+handle_pointer_button(struct libinput_device *libinput_device,
+ struct libinput_event_pointer *pointer_event)
+{
+ struct evdev_device *device =
+ libinput_device_get_user_data(libinput_device);
+
+ notify_button(device->seat,
+ libinput_event_pointer_get_time(pointer_event),
+ libinput_event_pointer_get_button(pointer_event),
+ libinput_event_pointer_get_button_state(pointer_event));
+}
+
+static void
+handle_pointer_axis(struct libinput_device *libinput_device,
+ struct libinput_event_pointer *pointer_event)
+{
+ struct evdev_device *device =
+ libinput_device_get_user_data(libinput_device);
+
+ notify_axis(device->seat,
+ libinput_event_pointer_get_time(pointer_event),
+ libinput_event_pointer_get_axis(pointer_event),
+ libinput_event_pointer_get_axis_value(pointer_event));
+}
+
+static void
+handle_touch_with_coords(struct libinput_device *libinput_device,
+ struct libinput_event_touch *touch_event,
+ int touch_type)
+{
+ struct evdev_device *device =
+ libinput_device_get_user_data(libinput_device);
+ wl_fixed_t x;
+ wl_fixed_t y;
+ uint32_t width, height;
+ uint32_t time;
+ int32_t slot;
+
+ time = libinput_event_touch_get_time(touch_event);
+ slot = libinput_event_touch_get_seat_slot(touch_event);
+
+ width = device->output->current_mode->width;
+ height = device->output->current_mode->height;
+ x = libinput_event_touch_get_x_transformed(touch_event, width);
+ y = libinput_event_touch_get_y_transformed(touch_event, height);
+
+ weston_output_transform_coordinate(device->output,
+ x, y, &x, &y);
+
+ notify_touch(device->seat, time, slot, x, y, touch_type);
+}
+
+static void
+handle_touch_down(struct libinput_device *device,
+ struct libinput_event_touch *touch_event)
+{
+ handle_touch_with_coords(device, touch_event, WL_TOUCH_DOWN);
+}
+
+static void
+handle_touch_motion(struct libinput_device *device,
+ struct libinput_event_touch *touch_event)
+{
+ handle_touch_with_coords(device, touch_event, WL_TOUCH_MOTION);
+}
+
+static void
+handle_touch_up(struct libinput_device *libinput_device,
+ struct libinput_event_touch *touch_event)
+{
+ struct evdev_device *device =
+ libinput_device_get_user_data(libinput_device);
+ uint32_t time = libinput_event_touch_get_time(touch_event);
+ int32_t slot = libinput_event_touch_get_seat_slot(touch_event);
+
+ notify_touch(device->seat, time, slot, 0, 0, WL_TOUCH_UP);
+}
+
+int
+evdev_device_process_event(struct libinput_event *event)
+{
+ struct libinput_device *libinput_device =
+ libinput_event_get_device(event);
+ int handled = 1;
+
+ switch (libinput_event_get_type(event)) {
+ case LIBINPUT_EVENT_KEYBOARD_KEY:
+ handle_keyboard_key(libinput_device,
+ libinput_event_get_keyboard_event(event));
+ break;
+ case LIBINPUT_EVENT_POINTER_MOTION:
+ handle_pointer_motion(libinput_device,
+ libinput_event_get_pointer_event(event));
+ break;
+ case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
+ handle_pointer_motion_absolute(
+ libinput_device,
+ libinput_event_get_pointer_event(event));
+ break;
+ case LIBINPUT_EVENT_POINTER_BUTTON:
+ handle_pointer_button(libinput_device,
+ libinput_event_get_pointer_event(event));
+ break;
+ case LIBINPUT_EVENT_POINTER_AXIS:
+ handle_pointer_axis(libinput_device,
+ libinput_event_get_pointer_event(event));
+ break;
+ case LIBINPUT_EVENT_TOUCH_DOWN:
+ handle_touch_down(libinput_device,
+ libinput_event_get_touch_event(event));
+ break;
+ case LIBINPUT_EVENT_TOUCH_MOTION:
+ handle_touch_motion(libinput_device,
+ libinput_event_get_touch_event(event));
+ break;
+ case LIBINPUT_EVENT_TOUCH_UP:
+ handle_touch_up(libinput_device,
+ libinput_event_get_touch_event(event));
+ default:
+ handled = 0;
+ weston_log("unknown libinput event %d\n",
+ libinput_event_get_type(event));
+ }
+
+ return handled;
+}
+
+static void
+notify_output_destroy(struct wl_listener *listener, void *data)
+{
+ struct evdev_device *device =
+ container_of(listener,
+ struct evdev_device, output_destroy_listener);
+ struct weston_compositor *c = device->seat->compositor;
+ struct weston_output *output;
+
+ if (device->output_name) {
+ output = container_of(c->output_list.next,
+ struct weston_output, link);
+ evdev_device_set_output(device, output);
+ } else {
+ device->output = NULL;
+ }
+}
+
+void
+evdev_device_set_output(struct evdev_device *device,
+ struct weston_output *output)
+{
+ device->output = output;
+ device->output_destroy_listener.notify = notify_output_destroy;
+ wl_signal_add(&output->destroy_signal,
+ &device->output_destroy_listener);
+}
+
+struct evdev_device *
+evdev_device_create(struct libinput_device *libinput_device,
+ struct weston_seat *seat)
+{
+ struct evdev_device *device;
+
+ device = zalloc(sizeof *device);
+ if (device == NULL)
+ return NULL;
+
+ device->seat = seat;
+ wl_list_init(&device->link);
+ device->device = libinput_device;
+
+ if (libinput_device_has_capability(libinput_device,
+ LIBINPUT_DEVICE_CAP_KEYBOARD)) {
+ weston_seat_init_keyboard(seat, NULL);
+ device->seat_caps |= EVDEV_SEAT_KEYBOARD;
+ }
+ if (libinput_device_has_capability(libinput_device,
+ LIBINPUT_DEVICE_CAP_POINTER)) {
+ weston_seat_init_pointer(seat);
+ device->seat_caps |= EVDEV_SEAT_POINTER;
+ }
+ if (libinput_device_has_capability(libinput_device,
+ LIBINPUT_DEVICE_CAP_TOUCH)) {
+ weston_seat_init_touch(seat);
+ device->seat_caps |= EVDEV_SEAT_TOUCH;
+ }
+
+ libinput_device_set_user_data(libinput_device, device);
+ libinput_device_ref(libinput_device);
+
+ return device;
+}
+
+void
+evdev_device_destroy(struct evdev_device *device)
+{
+ if (device->seat_caps & EVDEV_SEAT_POINTER)
+ weston_seat_release_pointer(device->seat);
+ if (device->seat_caps & EVDEV_SEAT_KEYBOARD)
+ weston_seat_release_keyboard(device->seat);
+ if (device->seat_caps & EVDEV_SEAT_TOUCH)
+ weston_seat_release_touch(device->seat);
+
+ if (device->output)
+ wl_list_remove(&device->output_destroy_listener.link);
+ wl_list_remove(&device->link);
+ libinput_device_unref(device->device);
+ free(device->devnode);
+ free(device->output_name);
+ free(device);
+}
+
+void
+evdev_notify_keyboard_focus(struct weston_seat *seat,
+ struct wl_list *evdev_devices)
+{
+ struct evdev_device *device;
+ struct wl_array keys;
+ unsigned int i, set;
+ char evdev_keys[(KEY_CNT + 7) / 8];
+ char all_keys[(KEY_CNT + 7) / 8];
+ uint32_t *k;
+ int ret;
+
+ if (!seat->keyboard_device_count > 0)
+ return;
+
+ memset(all_keys, 0, sizeof all_keys);
+ wl_list_for_each(device, evdev_devices, link) {
+ memset(evdev_keys, 0, sizeof evdev_keys);
+ ret = libinput_device_get_keys(device->device,
+ evdev_keys,
+ sizeof evdev_keys);
+ if (ret < 0) {
+ weston_log("failed to get keys for device %s\n",
+ device->devnode);
+ continue;
+ }
+ for (i = 0; i < ARRAY_LENGTH(evdev_keys); i++)
+ all_keys[i] |= evdev_keys[i];
+ }
+
+ wl_array_init(&keys);
+ for (i = 0; i < KEY_CNT; i++) {
+ set = all_keys[i >> 3] & (1 << (i & 7));
+ if (set) {
+ k = wl_array_add(&keys, sizeof *k);
+ *k = i;
+ }
+ }
+
+ notify_keyboard_focus_in(seat, &keys, STATE_UPDATE_AUTOMATIC);
+
+ wl_array_release(&keys);
+}