Implement libinput wlr_pointer

3 files changed, 164 insertions, 9 deletions

diff --git a/backend/CMakeLists.txt b/backend/CMakeLists.txt
index 23914240..b8df9373 100644
--- a/backend/CMakeLists.txt
+++ b/backend/CMakeLists.txt
@@ -17,6 +17,7 @@ add_library(wlr-backend
     libinput/backend.c
     libinput/events.c
     libinput/keyboard.c
+    libinput/pointer.c
 
     multi/backend.c
     backend.c
diff --git a/backend/libinput/events.c b/backend/libinput/events.c
index 2ce368e3..5ef58a3e 100644
--- a/backend/libinput/events.c
+++ b/backend/libinput/events.c
@@ -33,6 +33,22 @@ static struct wlr_input_device_impl input_device_impl = {
 	.destroy = wlr_libinput_device_destroy
 };
 
+static struct wlr_input_device *allocate_device(struct libinput_device *device,
+		list_t *devices, enum wlr_input_device_type type) {
+	int vendor = libinput_device_get_id_vendor(device);
+	int product = libinput_device_get_id_product(device);
+	const char *name = libinput_device_get_name(device);
+	struct wlr_input_device_state *devstate =
+		calloc(1, sizeof(struct wlr_input_device_state));
+	devstate->handle = device;
+	libinput_device_ref(device);
+	struct wlr_input_device *wlr_device = wlr_input_device_create(
+		type, &input_device_impl, devstate,
+		name, vendor, product);
+	list_add(devices, wlr_device);
+	return wlr_device;
+}
+
 static void handle_device_added(struct wlr_backend_state *state,
 		struct libinput_device *device) {
 	assert(state && device);
@@ -49,19 +65,16 @@ static void handle_device_added(struct wlr_backend_state *state,
 	wlr_log(L_DEBUG, "Added %s [%d:%d]", name, vendor, product);
 
 	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_KEYBOARD)) {
-		struct wlr_input_device_state *devstate =
-			calloc(1, sizeof(struct wlr_input_device_state));
-		devstate->handle = device;
-		libinput_device_ref(device);
-		struct wlr_input_device *wlr_device = wlr_input_device_create(
-			WLR_INPUT_DEVICE_KEYBOARD, &input_device_impl, devstate,
-			name, vendor, product);
+		struct wlr_input_device *wlr_device = allocate_device(device, devices,
+				WLR_INPUT_DEVICE_KEYBOARD);
 		wlr_device->keyboard = wlr_libinput_keyboard_create(device);
 		wl_signal_emit(&state->backend->events.input_add, wlr_device);
-		list_add(devices, wlr_device);
 	}
 	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_POINTER)) {
-		// TODO
+		struct wlr_input_device *wlr_device = allocate_device(device, devices,
+				WLR_INPUT_DEVICE_POINTER);
+		wlr_device->pointer = wlr_libinput_pointer_create(device);
+		wl_signal_emit(&state->backend->events.input_add, wlr_device);
 	}
 	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_TOUCH)) {
 		// TODO
@@ -109,6 +122,18 @@ void wlr_libinput_event(struct wlr_backend_state *state,
 	case LIBINPUT_EVENT_KEYBOARD_KEY:
 		handle_keyboard_key(event, device);
 		break;
+	case LIBINPUT_EVENT_POINTER_MOTION:
+		handle_pointer_motion(event, device);
+		break;
+	case LIBINPUT_EVENT_POINTER_MOTION_ABSOLUTE:
+		handle_pointer_motion_abs(event, device);
+		break;
+	case LIBINPUT_EVENT_POINTER_BUTTON:
+		handle_pointer_button(event, device);
+		break;
+	case LIBINPUT_EVENT_POINTER_AXIS:
+		handle_pointer_axis(event, device);
+		break;
 	default:
 		wlr_log(L_DEBUG, "Unknown libinput event %d", event_type);
 		break;
diff --git a/backend/libinput/pointer.c b/backend/libinput/pointer.c
new file mode 100644
index 00000000..0139fd60
--- /dev/null
+++ b/backend/libinput/pointer.c
@@ -0,0 +1,129 @@
+#include <stdlib.h>
+#include <assert.h>
+#include <libinput.h>
+#include <wlr/session.h>
+#include <wlr/types.h>
+#include <wlr/common/list.h>
+#include "backend/libinput.h"
+#include "common/log.h"
+#include "types.h"
+
+struct wlr_pointer *wlr_libinput_pointer_create(
+		struct libinput_device *device) {
+	assert(device);
+	return wlr_pointer_create(NULL, NULL);
+}
+
+void handle_pointer_motion(struct libinput_event *event,
+		struct libinput_device *device) {
+	struct wlr_input_device *dev =
+		get_appropriate_device(WLR_INPUT_DEVICE_POINTER, device);
+	if (!dev) {
+		wlr_log(L_DEBUG, "Got a pointer event for a device with no pointers?");
+		return;
+	}
+	struct libinput_event_pointer *pevent =
+		libinput_event_get_pointer_event(event);
+	struct wlr_pointer_motion *wlr_event =
+		calloc(1, sizeof(struct wlr_pointer_motion));
+	wlr_event->time_sec = libinput_event_pointer_get_time(pevent);
+	wlr_event->time_usec = libinput_event_pointer_get_time_usec(pevent);
+	wlr_event->delta_x = libinput_event_pointer_get_dx(pevent);
+	wlr_event->delta_y = libinput_event_pointer_get_dy(pevent);
+	wl_signal_emit(&dev->pointer->events.motion, wlr_event);
+}
+
+void handle_pointer_motion_abs(struct libinput_event *event,
+		struct libinput_device *device) {
+	struct wlr_input_device *dev =
+		get_appropriate_device(WLR_INPUT_DEVICE_POINTER, device);
+	if (!dev) {
+		wlr_log(L_DEBUG, "Got a pointer event for a device with no pointers?");
+		return;
+	}
+	struct libinput_event_pointer *pevent =
+		libinput_event_get_pointer_event(event);
+	struct wlr_pointer_motion_absolute *wlr_event =
+		calloc(1, sizeof(struct wlr_pointer_motion_absolute));
+	wlr_event->time_sec = libinput_event_pointer_get_time(pevent);
+	wlr_event->time_usec = libinput_event_pointer_get_time_usec(pevent);
+	wlr_event->x_mm = libinput_event_pointer_get_absolute_x(pevent);
+	wlr_event->y_mm = libinput_event_pointer_get_absolute_y(pevent);
+	libinput_device_get_size(device, &wlr_event->width_mm, &wlr_event->height_mm);
+	wl_signal_emit(&dev->pointer->events.motion_absolute, wlr_event);
+}
+
+void handle_pointer_button(struct libinput_event *event,
+		struct libinput_device *device) {
+	struct wlr_input_device *dev =
+		get_appropriate_device(WLR_INPUT_DEVICE_POINTER, device);
+	if (!dev) {
+		wlr_log(L_DEBUG, "Got a pointer event for a device with no pointers?");
+		return;
+	}
+	struct libinput_event_pointer *pevent =
+		libinput_event_get_pointer_event(event);
+	struct wlr_pointer_button *wlr_event =
+		calloc(1, sizeof(struct wlr_pointer_button));
+	wlr_event->time_sec = libinput_event_pointer_get_time(pevent);
+	wlr_event->time_usec = libinput_event_pointer_get_time_usec(pevent);
+	wlr_event->button = libinput_event_pointer_get_button(pevent);
+	switch (libinput_event_pointer_get_button_state(pevent)) {
+	case LIBINPUT_BUTTON_STATE_PRESSED:
+		wlr_event->state = WLR_BUTTON_PRESSED;
+		break;
+	case LIBINPUT_BUTTON_STATE_RELEASED:
+		wlr_event->state = WLR_BUTTON_RELEASED;
+		break;
+	}
+	wl_signal_emit(&dev->pointer->events.button, wlr_event);
+}
+
+void handle_pointer_axis(struct libinput_event *event,
+		struct libinput_device *device) {
+	struct wlr_input_device *dev =
+		get_appropriate_device(WLR_INPUT_DEVICE_POINTER, device);
+	if (!dev) {
+		wlr_log(L_DEBUG, "Got a pointer event for a device with no pointers?");
+		return;
+	}
+	struct libinput_event_pointer *pevent =
+		libinput_event_get_pointer_event(event);
+	struct wlr_pointer_axis *wlr_event =
+		calloc(1, sizeof(struct wlr_pointer_axis));
+	wlr_event->time_sec = libinput_event_pointer_get_time(pevent);
+	wlr_event->time_usec = libinput_event_pointer_get_time_usec(pevent);
+	switch (libinput_event_pointer_get_axis_source(pevent)) {
+	case LIBINPUT_POINTER_AXIS_SOURCE_WHEEL:
+		wlr_event->source = WLR_AXIS_SOURCE_WHEEL;
+		break;
+	case LIBINPUT_POINTER_AXIS_SOURCE_FINGER:
+		wlr_event->source = WLR_AXIS_SOURCE_FINGER;
+		break;
+	case LIBINPUT_POINTER_AXIS_SOURCE_CONTINUOUS:
+		wlr_event->source = WLR_AXIS_SOURCE_CONTINUOUS;
+		break;
+	case LIBINPUT_POINTER_AXIS_SOURCE_WHEEL_TILT:
+		wlr_event->source = WLR_AXIS_SOURCE_WHEEL_TILT;
+		break;
+	}
+	enum libinput_pointer_axis axies[] = {
+		LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL,
+		LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL,
+	};
+	for (size_t i = 0; i < sizeof(axies) / sizeof(axies[0]); ++i) {
+		if (libinput_event_pointer_has_axis(pevent, axies[i])) {
+			switch (axies[i]) {
+			case LIBINPUT_POINTER_AXIS_SCROLL_VERTICAL:
+				wlr_event->orientation = WLR_AXIS_ORIENTATION_VERTICAL;
+				break;
+			case LIBINPUT_POINTER_AXIS_SCROLL_HORIZONTAL:
+				wlr_event->orientation = WLR_AXIS_ORIENTATION_HORIZONTAL;
+				break;
+			}
+			wlr_event->delta = libinput_event_pointer_get_axis_value(
+					pevent, axies[i]);
+		}
+		wl_signal_emit(&dev->pointer->events.axis, wlr_event);
+	}
+}