backend/wayland: Set cursor indivdualy per output

backend/wayland/output.c

@@ -419,8 +419,10 @@ static void output_destroy(struct wlr_output *wlr_output) {
 }
 
 void update_wl_output_cursor(struct wlr_wl_output *output) {
-	struct wlr_wl_pointer *pointer = output->backend->current_pointer;
-	if (pointer && pointer->output == output && output->enter_serial) {
+	struct wlr_wl_pointer *pointer = output->cursor.pointer;
+	if (pointer) {
+		assert(pointer->output == output);
+		assert(output->enter_serial);
 		wl_pointer_set_cursor(pointer->wl_pointer, output->enter_serial,
 			output->cursor.surface, output->cursor.hotspot_x,
 			output->cursor.hotspot_y);

backend/wayland/seat.c

@@ -43,7 +43,6 @@ static void pointer_handle_enter(void *data, struct wl_pointer *wl_pointer,
 		uint32_t serial, struct wl_surface *surface, wl_fixed_t sx,
 		wl_fixed_t sy) {
 	struct wlr_wl_seat *seat = data;
-	struct wlr_wl_backend *backend = seat->backend;
 	if (surface == NULL) {
 		return;
 	}
@@ -54,7 +53,7 @@ static void pointer_handle_enter(void *data, struct wl_pointer *wl_pointer,
 	seat->active_pointer = pointer;
 
 	// Manage cursor icon/rendering on output
-	struct wlr_wl_pointer *current_pointer = backend->current_pointer;
+	struct wlr_wl_pointer *current_pointer = output->cursor.pointer;
 	if (current_pointer && current_pointer != pointer) {
 		wlr_log(WLR_INFO, "Ignoring seat %s pointer cursor in favor of seat %s",
 			seat->name, current_pointer->input_device->seat->name);
@@ -62,14 +61,13 @@ static void pointer_handle_enter(void *data, struct wl_pointer *wl_pointer,
 	}
 
 	output->enter_serial = serial;
-	backend->current_pointer = pointer;
+	output->cursor.pointer = pointer;
 	update_wl_output_cursor(output);
 }
 
 static void pointer_handle_leave(void *data, struct wl_pointer *wl_pointer,
 		uint32_t serial, struct wl_surface *surface) {
 	struct wlr_wl_seat *seat = data;
-	struct wlr_wl_backend *backend = seat->backend;
 	if (surface == NULL) {
 		return;
 	}
@@ -82,14 +80,10 @@ static void pointer_handle_leave(void *data, struct wl_pointer *wl_pointer,
 		seat->active_pointer = NULL;
 	}
 
+	if (output->cursor.pointer == seat->active_pointer) {
 		output->enter_serial = 0;
-
-	if (backend->current_pointer == NULL ||
-			backend->current_pointer->output != output) {
-		return;
+		output->cursor.pointer = NULL;
 	}
-
-	backend->current_pointer = NULL;
 }
 
 static void pointer_handle_motion(void *data, struct wl_pointer *wl_pointer,
@@ -489,8 +483,8 @@ struct wlr_wl_pointer *pointer_get_wl(struct wlr_pointer *wlr_pointer) {
 static void pointer_destroy(struct wlr_pointer *wlr_pointer) {
 	struct wlr_wl_pointer *pointer = pointer_get_wl(wlr_pointer);
 
-	if (pointer->output->backend->current_pointer == pointer) {
-		pointer->output->backend->current_pointer = NULL;
+	if (pointer->output->cursor.pointer == pointer) {
+		pointer->output->cursor.pointer = NULL;
 	}
 
 	struct wlr_wl_seat *seat = pointer->input_device->seat;
@@ -782,9 +776,10 @@ static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
 			}
 			wlr_log(WLR_DEBUG, "dropping pointer %s",
 				pointer->input_device->wlr_input_device.name);
+			struct wlr_wl_output *output = pointer->output;
 			wlr_input_device_destroy(device);
 			assert(seat->active_pointer != pointer);
-			assert(backend->current_pointer != pointer);
+			assert(output->cursor.pointer != pointer);
 		}
 
 		wl_pointer_release(seat->pointer);

include/backend/wayland.h

@@ -40,7 +40,6 @@ struct wlr_wl_backend {
 	struct zwp_linux_dmabuf_v1 *zwp_linux_dmabuf_v1;
 	struct zwp_relative_pointer_manager_v1 *zwp_relative_pointer_manager_v1;
 	struct wl_list seats; // wlr_wl_seat.link
-	struct wlr_wl_pointer *current_pointer;
 	struct zwp_tablet_manager_v2 *tablet_manager;
 	struct wlr_drm_format_set linux_dmabuf_v1_formats;
 };
@@ -75,6 +74,7 @@ struct wlr_wl_output {
 	uint32_t enter_serial;
 
 	struct {
+		struct wlr_wl_pointer *pointer;
 		struct wl_surface *surface;
 		struct wl_egl_window *egl_window;
 		int32_t hotspot_x, hotspot_y;