Allocate wlr_touch devices

backend/CMakeLists.txt

@@ -18,6 +18,7 @@ add_library(wlr-backend
     libinput/events.c
     libinput/keyboard.c
     libinput/pointer.c
+    libinput/touch.c
 
     multi/backend.c
     backend.c

backend/libinput/backend.c

@@ -102,7 +102,7 @@ struct wlr_backend *wlr_libinput_backend_create(struct wl_display *display,
 		goto error_state;
 	}
 
-	if (!(state->keyboards = list_create())) {
+	if (!(state->devices = list_create())) {
 		wlr_log(L_ERROR, "Allocation failed: %s", strerror(errno));
 		goto error_backend;
 	}

backend/libinput/events.c

@@ -33,7 +33,8 @@ 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,
+static struct wlr_input_device *allocate_device(
+		struct wlr_backend_state *state, 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);
@@ -46,6 +47,7 @@ static struct wlr_input_device *allocate_device(struct libinput_device *device,
 		type, &input_device_impl, devstate,
 		name, vendor, product);
 	list_add(devices, wlr_device);
+	list_add(state->devices, wlr_device);
 	return wlr_device;
 }
 
@@ -65,19 +67,22 @@ 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 *wlr_device = allocate_device(device, devices,
+		struct wlr_input_device *wlr_device = allocate_device(state,
-				WLR_INPUT_DEVICE_KEYBOARD);
+				device, devices, WLR_INPUT_DEVICE_KEYBOARD);
 		wlr_device->keyboard = wlr_libinput_keyboard_create(device);
 		wl_signal_emit(&state->backend->events.input_add, wlr_device);
 	}
 	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_POINTER)) {
-		struct wlr_input_device *wlr_device = allocate_device(device, devices,
+		struct wlr_input_device *wlr_device = allocate_device(state,
-				WLR_INPUT_DEVICE_POINTER);
+				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
+		struct wlr_input_device *wlr_device = allocate_device(state,
+				device, devices, WLR_INPUT_DEVICE_TOUCH);
+		wlr_device->touch = wlr_libinput_touch_create(device);
+		wl_signal_emit(&state->backend->events.input_add, wlr_device);
 	}
 	if (libinput_device_has_capability(device, LIBINPUT_DEVICE_CAP_TABLET_TOOL)) {
 		// TODO

backend/libinput/touch.c

@@ -0,0 +1,15 @@
+#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_touch *wlr_libinput_touch_create(
+		struct libinput_device *device) {
+	assert(device);
+	return wlr_touch_create(NULL, NULL);
+}

include/backend/libinput.h

@@ -16,7 +16,7 @@ struct wlr_backend_state {
 	struct libinput *libinput;
 	struct wl_event_source *input_event;
 
-	list_t *keyboards;
+	list_t *devices;
 };
 
 struct wlr_input_device_state {
@@ -46,4 +46,17 @@ void handle_pointer_button(struct libinput_event *event,
 void handle_pointer_axis(struct libinput_event *event,
 		struct libinput_device *device);
 
+struct wlr_touch *wlr_libinput_touch_create(
+		struct libinput_device *device);
+void handle_touch_down(struct libinput_event *event,
+		struct libinput_device *device);
+void handle_touch_up(struct libinput_event *event,
+		struct libinput_device *device);
+void handle_touch_motion(struct libinput_event *event,
+		struct libinput_device *device);
+void handle_touch_cancel(struct libinput_event *event,
+		struct libinput_device *device);
+void handle_touch_frame(struct libinput_event *event,
+		struct libinput_device *device);
+
 #endif

include/types.h

@@ -34,6 +34,14 @@ struct wlr_pointer *wlr_pointer_create(struct wlr_pointer_impl *impl,
 		struct wlr_pointer_state *state);
 void wlr_pointer_destroy(struct wlr_pointer *pointer);
 
+struct wlr_touch_impl {
+	void (*destroy)(struct wlr_touch_state *state);
+};
+
+struct wlr_touch *wlr_touch_create(struct wlr_touch_impl *impl,
+		struct wlr_touch_state *state);
+void wlr_touch_destroy(struct wlr_touch *touch);
+
 struct wlr_input_device_impl {
 	void (*destroy)(struct wlr_input_device_state *state);
 };

include/wlr/types.h

@@ -134,7 +134,22 @@ struct wlr_pointer_axis {
 	double delta;
 };
 
-// TODO: touch
+struct wlr_touch_state;
+struct wlr_touch_impl;
+
+struct wlr_touch {
+	struct wlr_touch_state *state;
+	struct wlr_touch_impl *impl;
+
+	struct {
+		struct wl_signal down;
+		struct wl_signal up;
+		struct wl_signal motion;
+		struct wl_signal cancel;
+		struct wl_signal frame;
+	} events;
+};
+
 // TODO: tablet & tablet tool
 // TODO: gestures
 // TODO: switch
@@ -164,6 +179,7 @@ struct wlr_input_device {
 		void *_device;
 		struct wlr_keyboard *keyboard;
 		struct wlr_pointer *pointer;
+		struct wlr_touch *touch;
 	};
 };
 

types/CMakeLists.txt

@@ -7,6 +7,7 @@ add_library(wlr-types
     wlr_output.c
     wlr_keyboard.c
     wlr_pointer.c
+    wlr_touch.c
     wlr_input_device.c
 )
 

types/wlr_keyboard.c

@@ -16,6 +16,8 @@ struct wlr_keyboard *wlr_keyboard_create(struct wlr_keyboard_impl *impl,
 
 void wlr_keyboard_destroy(struct wlr_keyboard *kb) {
 	if (!kb) return;
-	kb->impl->destroy(kb->state);
+	if (kb->impl) {
+		kb->impl->destroy(kb->state);
+	}
 	free(kb);
 }

types/wlr_pointer.c

@@ -17,8 +17,10 @@ struct wlr_pointer *wlr_pointer_create(struct wlr_pointer_impl *impl,
 	return pointer;
 }
 
-void wlr_pointer_destroy(struct wlr_pointer *kb) {
+void wlr_pointer_destroy(struct wlr_pointer *pointer) {
-	if (!kb) return;
+	if (!pointer) return;
-	kb->impl->destroy(kb->state);
+	if (pointer->impl) {
-	free(kb);
+		pointer->impl->destroy(pointer->state);
+	}
+	free(pointer);
 }

types/wlr_touch.c

@@ -0,0 +1,27 @@
+#include <stdlib.h>
+#include <string.h>
+#include <wayland-server.h>
+#include <wlr/types.h>
+#include <wlr/common/list.h>
+#include "types.h"
+
+struct wlr_touch *wlr_touch_create(struct wlr_touch_impl *impl,
+		struct wlr_touch_state *state) {
+	struct wlr_touch *touch = calloc(1, sizeof(struct wlr_touch));
+	touch->impl = impl;
+	touch->state = state;
+	wl_signal_init(&touch->events.down);
+	wl_signal_init(&touch->events.up);
+	wl_signal_init(&touch->events.motion);
+	wl_signal_init(&touch->events.frame);
+	wl_signal_init(&touch->events.cancel);
+	return touch;
+}
+
+void wlr_touch_destroy(struct wlr_touch *touch) {
+	if (!touch) return;
+	if (touch->impl) {
+		touch->impl->destroy(touch->state);
+	}
+	free(touch);
+}