feat: apply touch-input patch

src/mango.c

@@ -70,6 +70,7 @@
 #include <wlr/types/wlr_single_pixel_buffer_v1.h>
 #include <wlr/types/wlr_subcompositor.h>
 #include <wlr/types/wlr_switch.h>
+#include <wlr/types/wlr_touch.h>
 #include <wlr/types/wlr_viewporter.h>
 #include <wlr/types/wlr_virtual_keyboard_v1.h>
 #include <wlr/types/wlr_virtual_pointer_v1.h>
@@ -410,6 +411,12 @@ typedef struct {
 	struct wl_listener destroy;
 } KeyboardGroup;
 
+typedef struct TouchGroup {
+	struct wl_list link;
+	struct wlr_touch *touch;
+	Monitor *m;
+} TouchGroup;
+
 typedef struct {
 	struct wlr_keyboard_shortcuts_inhibitor_v1 *inhibitor;
 	struct wl_listener destroy;
@@ -556,6 +563,7 @@ static void createpointerconstraint(struct wl_listener *listener, void *data);
 static void cursorconstrain(struct wlr_pointer_constraint_v1 *constraint);
 static void commitpopup(struct wl_listener *listener, void *data);
 static void createpopup(struct wl_listener *listener, void *data);
+static void createtouch(struct wlr_touch *touch);
 static void cursorframe(struct wl_listener *listener, void *data);
 static void cursorwarptohint(void);
 static void destroydecoration(struct wl_listener *listener, void *data);
@@ -633,6 +641,11 @@ static void setsel(struct wl_listener *listener, void *data);
 static void setup(void);
 static void startdrag(struct wl_listener *listener, void *data);
 
+static void touchdown(struct wl_listener *listener, void *data);
+static void touchup(struct wl_listener *listener, void *data);
+static void touchframe(struct wl_listener *listener, void *data);
+static void touchmotion(struct wl_listener *listener, void *data);
+
 static void unlocksession(struct wl_listener *listener, void *data);
 static void unmaplayersurfacenotify(struct wl_listener *listener, void *data);
 static void unmapnotify(struct wl_listener *listener, void *data);
@@ -810,6 +823,7 @@ static struct wlr_output_layout *output_layout;
 static struct wlr_box sgeom;
 static struct wl_list mons;
 static Monitor *selmon;
+static struct wl_list touches;
 
 static int enablegaps = 1; /* enables gaps, used by togglegaps */
 static int axis_apply_time = 0;
@@ -883,6 +897,10 @@ static struct wl_listener request_set_sel = {.notify = setsel};
 static struct wl_listener request_set_cursor_shape = {.notify = setcursorshape};
 static struct wl_listener request_start_drag = {.notify = requeststartdrag};
 static struct wl_listener start_drag = {.notify = startdrag};
+static struct wl_listener touch_down = {.notify = touchdown};
+static struct wl_listener touch_frame = {.notify = touchframe};
+static struct wl_listener touch_motion = {.notify = touchmotion};
+static struct wl_listener touch_up = {.notify = touchup};
 static struct wl_listener new_session_lock = {.notify = locksession};
 static struct wl_listener drm_lease_request = {.notify = requestdrmlease};
 static struct wl_listener keyboard_shortcuts_inhibit_new_inhibitor = {
@@ -2024,6 +2042,10 @@ void cleanuplisteners(void) {
 	wl_list_remove(&request_set_cursor_shape.link);
 	wl_list_remove(&request_start_drag.link);
 	wl_list_remove(&start_drag.link);
+	wl_list_remove(&touch_down.link);
+	wl_list_remove(&touch_frame.link);
+	wl_list_remove(&touch_motion.link);
+	wl_list_remove(&touch_up.link);
 	wl_list_remove(&new_session_lock.link);
 	wl_list_remove(&tearing_new_object.link);
 	wl_list_remove(&keyboard_shortcuts_inhibit_new_inhibitor.link);
@@ -2962,6 +2984,14 @@ void createpopup(struct wl_listener *listener, void *data) {
 	LISTEN_STATIC(&popup->base->surface->events.commit, commitpopup);
 }
 
+void createtouch(struct wlr_touch *wlr_touch) {
+	TouchGroup *touch = ecalloc(1, sizeof(TouchGroup));
+
+	touch->touch = wlr_touch;
+	wl_list_insert(&touches, &touch->link);
+	wlr_cursor_attach_input_device(cursor, &wlr_touch->base);
+}
+
 void cursorconstrain(struct wlr_pointer_constraint_v1 *constraint) {
 	if (active_constraint == constraint)
 		return;
@@ -3285,6 +3315,9 @@ void inputdevice(struct wl_listener *listener, void *data) {
 	case WLR_INPUT_DEVICE_SWITCH:
 		createswitch(wlr_switch_from_input_device(device));
 		break;
+	case WLR_INPUT_DEVICE_TOUCH:
+		createtouch(wlr_touch_from_input_device(device));
+		break;
 	default:
 		/* TODO handle other input device types */
 		break;
@@ -3298,6 +3331,8 @@ void inputdevice(struct wl_listener *listener, void *data) {
 	caps = WL_SEAT_CAPABILITY_POINTER;
 	if (!wl_list_empty(&kb_group->wlr_group->devices))
 		caps |= WL_SEAT_CAPABILITY_KEYBOARD;
+	if (!wl_list_empty(&touches))
+		caps |= WL_SEAT_CAPABILITY_TOUCH;
 	wlr_seat_set_capabilities(seat, caps);
 }
 
@@ -5065,6 +5100,13 @@ void setup(void) {
 	wl_signal_add(&cursor->events.axis, &cursor_axis);
 	wl_signal_add(&cursor->events.frame, &cursor_frame);
 
+	wl_list_init(&touches);
+
+	wl_signal_add(&cursor->events.touch_down, &touch_down);
+	wl_signal_add(&cursor->events.touch_frame, &touch_frame);
+	wl_signal_add(&cursor->events.touch_motion, &touch_motion);
+	wl_signal_add(&cursor->events.touch_up, &touch_up);
+
 	// 这两句代码会造成obs窗口里的鼠标光标消失,不知道注释有什么影响
 	cursor_shape_mgr = wlr_cursor_shape_manager_v1_create(dpy, 1);
 	wl_signal_add(&cursor_shape_mgr->events.request_set_shape,
@@ -5175,6 +5217,122 @@ void startdrag(struct wl_listener *listener, void *data) {
 	LISTEN_STATIC(&drag->icon->events.destroy, destroydragicon);
 }
 
+void touchdown(struct wl_listener *listener, void *data) {
+	struct wlr_touch_down_event *event = data;
+	double lx, ly;
+	double sx, sy;
+	struct wlr_surface *surface;
+	Client *c = NULL;
+	uint32_t serial = 0;
+	Monitor *m;
+
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+
+	// Map the input to the appropriate output, to ensure that rotation is
+	// handled.
+	wl_list_for_each(m, &mons, link) {
+		if (m == NULL || m->wlr_output == NULL) {
+			continue;
+		}
+		if (event->touch->output_name != NULL &&
+			0 != strcmp(event->touch->output_name, m->wlr_output->name)) {
+			continue;
+		}
+
+		wlr_cursor_map_input_to_output(cursor, &event->touch->base,
+									   m->wlr_output);
+	}
+
+	wlr_cursor_absolute_to_layout_coords(cursor, &event->touch->base, event->x,
+										 event->y, &lx, &ly);
+
+	/* Find the client under the pointer and send the event along. */
+	xytonode(lx, ly, &surface, &c, NULL, &sx, &sy);
+	if (sloppyfocus)
+		focusclient(c, 0);
+
+	if (surface != NULL) {
+		serial = wlr_seat_touch_notify_down(seat, surface, event->time_msec,
+											event->touch_id, sx, sy);
+	}
+
+	if (serial && wlr_seat_touch_num_points(seat) == 1) {
+		/* Emulate a mouse click if the touch event wasn't handled */
+		struct wlr_pointer_button_event *button_event = data;
+		struct wlr_pointer_motion_absolute_event *motion_event = data;
+		double dx, dy;
+
+		wlr_cursor_absolute_to_layout_coords(
+			cursor, &motion_event->pointer->base, motion_event->x,
+			motion_event->y, &lx, &ly);
+		wlr_cursor_warp_closest(cursor, &motion_event->pointer->base, lx, ly);
+		dx = lx - cursor->x;
+		dy = ly - cursor->y;
+		motionnotify(motion_event->time_msec, &motion_event->pointer->base, dx,
+					 dy, dx, dy);
+
+		button_event->button = BTN_LEFT;
+		button_event->state = WL_POINTER_BUTTON_STATE_PRESSED;
+		buttonpress(listener, button_event);
+	}
+}
+
+void touchup(struct wl_listener *listener, void *data) {
+	struct wlr_touch_up_event *event = data;
+
+	if (!wlr_seat_touch_get_point(seat, event->touch_id)) {
+		return;
+	}
+
+	if (wlr_seat_touch_num_points(seat) == 1) {
+		struct wlr_pointer_button_event *button_event = data;
+
+		button_event->button = BTN_LEFT;
+		button_event->state = WL_POINTER_BUTTON_STATE_RELEASED;
+		buttonpress(listener, button_event);
+	}
+
+	wlr_seat_touch_notify_up(seat, event->time_msec, event->touch_id);
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+}
+
+void touchframe(struct wl_listener *listener, void *data) {
+	wlr_seat_touch_notify_frame(seat);
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+}
+
+void touchmotion(struct wl_listener *listener, void *data) {
+	struct wlr_touch_motion_event *event = data;
+	double lx, ly;
+	double sx, sy;
+	struct wlr_surface *surface;
+	Client *c = NULL;
+
+	if (!wlr_seat_touch_get_point(seat, event->touch_id)) {
+		return;
+	}
+
+	wlr_cursor_absolute_to_layout_coords(cursor, &event->touch->base, event->x,
+										 event->y, &lx, &ly);
+	xytonode(lx, ly, &surface, &c, NULL, &sx, &sy);
+
+	if (c != NULL && surface != NULL) {
+		if (sloppyfocus)
+			focusclient(c, 0);
+		wlr_seat_touch_point_focus(seat, surface, event->time_msec,
+								   event->touch_id, sx, sy);
+	} else {
+		if (sloppyfocus)
+			focusclient(NULL, 0);
+		wlr_seat_touch_point_clear_focus(seat, event->time_msec,
+										 event->touch_id);
+	}
+	wlr_seat_touch_notify_motion(seat, event->time_msec, event->touch_id, sx,
+								 sy);
+
+	wlr_idle_notifier_v1_notify_activity(idle_notifier, seat);
+}
+
 void tag_client(const Arg *arg, Client *target_client) {
 	Client *fc = NULL;
 	if (target_client && arg->ui & TAGMASK) {