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				https://gitlab.freedesktop.org/wlroots/wlroots.git
				synced 2025-11-03 09:01:40 -05:00 
			
		
		
		
	basic touch dnd
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						6a516f7c41
					
				
					 9 changed files with 210 additions and 78 deletions
				
			
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			@ -56,6 +56,9 @@ struct roots_cursor {
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	struct wl_listener pointer_grab_begin;
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	struct wl_listener pointer_grab_end;
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	struct wl_listener touch_grab_begin;
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	struct wl_listener touch_grab_end;
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	struct wl_listener request_set_cursor;
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};
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			@ -99,4 +102,10 @@ void roots_cursor_handle_pointer_grab_begin(struct roots_cursor *cursor,
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void roots_cursor_handle_pointer_grab_end(struct roots_cursor *cursor,
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		struct wlr_seat_pointer_grab *grab);
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void roots_cursor_handle_touch_grab_begin(struct roots_cursor *cursor,
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		struct wlr_seat_touch_grab *grab);
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void roots_cursor_handle_touch_grab_end(struct roots_cursor *cursor,
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		struct wlr_seat_touch_grab *grab);
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#endif
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			@ -9,6 +9,9 @@ struct roots_drag_icon {
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	struct wl_list link; // roots_seat::drag_icons
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	bool mapped;
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	bool is_pointer;
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	bool touch_id;
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	int32_t sx;
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	int32_t sy;
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			@ -10,6 +10,9 @@ wlr_pointer_grab_interface wlr_data_device_pointer_drag_interface;
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extern const struct
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wlr_keyboard_grab_interface wlr_data_device_keyboard_drag_interface;
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extern const struct
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wlr_touch_grab_interface wlr_data_device_touch_drag_interface;
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struct wlr_data_device_manager {
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	struct wl_global *global;
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};
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			@ -55,14 +58,18 @@ struct wlr_drag {
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	struct wlr_seat_keyboard_grab keyboard_grab;
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	struct wlr_seat_touch_grab touch_grab;
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	struct wlr_seat *seat;
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	struct wlr_seat_client *seat_client;
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	struct wlr_seat_client *focus_client;
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	bool is_pointer_grab;
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	struct wlr_surface *icon;
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	struct wlr_surface *focus;
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	struct wlr_data_source *source;
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	bool cancelling;
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	int32_t grab_touch_id;
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	struct wl_listener icon_destroy;
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	struct wl_listener source_destroy;
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			@ -144,6 +144,7 @@ struct wlr_seat_touch_state {
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	struct wl_list touch_points; // wlr_touch_point::link
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	uint32_t grab_serial;
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	uint32_t grab_id;
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	struct wlr_seat_touch_grab *grab;
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	struct wlr_seat_touch_grab *default_grab;
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			@ -328,33 +328,59 @@ static void handle_drag_icon_destroy(struct wl_listener *listener, void *data) {
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	free(drag_icon);
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}
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static struct roots_drag_icon *seat_add_drag_icon(struct roots_seat *seat,
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		struct wlr_surface *icon_surface) {
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	if (!icon_surface) {
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		return NULL;
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	}
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	struct roots_drag_icon *iter_icon;
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	wl_list_for_each(iter_icon, &seat->drag_icons, link) {
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		if (iter_icon->surface == icon_surface) {
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			// already in the list
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			return iter_icon;
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		}
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	}
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	struct roots_drag_icon *drag_icon =
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		calloc(1, sizeof(struct roots_drag_icon));
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	drag_icon->mapped = true;
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	drag_icon->surface = icon_surface;
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	wl_list_insert(&seat->drag_icons, &drag_icon->link);
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	wl_signal_add(&icon_surface->events.destroy,
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			&drag_icon->surface_destroy);
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	drag_icon->surface_destroy.notify = handle_drag_icon_destroy;
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	wl_signal_add(&icon_surface->events.commit,
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			&drag_icon->surface_commit);
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	drag_icon->surface_commit.notify = handle_drag_icon_commit;
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	return drag_icon;
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}
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static void seat_unmap_drag_icon(struct roots_seat *seat,
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		struct wlr_surface *icon_surface) {
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	if (!icon_surface) {
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		return;
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	}
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	struct roots_drag_icon *icon;
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	wl_list_for_each(icon, &seat->drag_icons, link) {
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		if (icon->surface == icon_surface) {
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			icon->mapped = false;
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		}
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	}
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}
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void roots_cursor_handle_pointer_grab_begin(struct roots_cursor *cursor,
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		struct wlr_seat_pointer_grab *grab) {
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	struct roots_seat *seat = cursor->seat;
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	if (grab->interface == &wlr_data_device_pointer_drag_interface) {
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		struct wlr_drag *drag = grab->data;
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		if (drag->icon) {
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			struct roots_drag_icon *iter_icon;
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			wl_list_for_each(iter_icon, &seat->drag_icons, link) {
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				if (iter_icon->surface == drag->icon) {
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					// already in the list
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					return;
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				}
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			}
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			struct roots_drag_icon *drag_icon =
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				calloc(1, sizeof(struct roots_drag_icon));
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			drag_icon->mapped = true;
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			drag_icon->surface = drag->icon;
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			wl_list_insert(&seat->drag_icons, &drag_icon->link);
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			wl_signal_add(&drag->icon->events.destroy,
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				&drag_icon->surface_destroy);
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			drag_icon->surface_destroy.notify = handle_drag_icon_destroy;
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			wl_signal_add(&drag->icon->events.commit,
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				&drag_icon->surface_commit);
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			drag_icon->surface_commit.notify = handle_drag_icon_commit;
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		struct roots_drag_icon *icon =
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			seat_add_drag_icon(cursor->seat, drag->icon);
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		if (icon) {
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			icon->is_pointer = true;
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		}
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	}
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}
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			@ -363,13 +389,27 @@ void roots_cursor_handle_pointer_grab_end(struct roots_cursor *cursor,
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		struct wlr_seat_pointer_grab *grab) {
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	if (grab->interface == &wlr_data_device_pointer_drag_interface) {
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		struct wlr_drag *drag = grab->data;
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		struct roots_drag_icon *icon;
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		wl_list_for_each(icon, &cursor->seat->drag_icons, link) {
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			if (icon->surface == drag->icon) {
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				icon->mapped = false;
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			}
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		seat_unmap_drag_icon(cursor->seat, drag->icon);
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	}
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}
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void roots_cursor_handle_touch_grab_begin(struct roots_cursor *cursor,
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		struct wlr_seat_touch_grab *grab) {
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	if (grab->interface == &wlr_data_device_touch_drag_interface) {
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		struct wlr_drag *drag = grab->data;
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		struct roots_drag_icon *icon =
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			seat_add_drag_icon(cursor->seat, drag->icon);
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		if (icon) {
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			icon->is_pointer = false;
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			icon->touch_id = drag->grab_touch_id;
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		}
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	}
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	roots_cursor_update_position(cursor, 0);
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}
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void roots_cursor_handle_touch_grab_end(struct roots_cursor *cursor,
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		struct wlr_seat_touch_grab *grab) {
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	if (grab->interface == &wlr_data_device_touch_drag_interface) {
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		struct wlr_drag *drag = grab->data;
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		seat_unmap_drag_icon(cursor->seat, drag->icon);
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	}
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}
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			@ -200,9 +200,20 @@ static void output_frame_notify(struct wl_listener *listener, void *data) {
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			}
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			struct wlr_surface *icon = drag_icon->surface;
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			struct wlr_cursor *cursor = seat->cursor->cursor;
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			double icon_x = cursor->x + drag_icon->sx;
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			double icon_y = cursor->y + drag_icon->sy;
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			render_surface(icon, desktop, wlr_output, &now, icon_x, icon_y, 0);
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			double icon_x = 0, icon_y = 0;
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			if (drag_icon->is_pointer) {
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				icon_x = cursor->x + drag_icon->sx;
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				icon_y = cursor->y + drag_icon->sy;
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				render_surface(icon, desktop, wlr_output, &now, icon_x, icon_y, 0);
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			} else {
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				struct wlr_touch_point *point =
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					wlr_seat_touch_get_point(seat->seat, drag_icon->touch_id);
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				if (point) {
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					icon_x = point->sx + drag_icon->sx; // TODO plus view x
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					icon_y = point->sy + drag_icon->sy; // TODO plus view y
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					render_surface(icon, desktop, wlr_output, &now, icon_x, icon_y, 0);
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				}
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			}
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		}
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	}
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			@ -111,6 +111,22 @@ static void handle_pointer_grab_end(struct wl_listener *listener,
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	roots_cursor_handle_pointer_grab_end(cursor, grab);
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}
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static void handle_touch_grab_begin(struct wl_listener *listener,
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		void *data) {
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	struct roots_cursor *cursor =
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		wl_container_of(listener, cursor, touch_grab_begin);
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	struct wlr_seat_touch_grab *grab = data;
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	roots_cursor_handle_touch_grab_begin(cursor, grab);
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}
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static void handle_touch_grab_end(struct wl_listener *listener,
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		void *data) {
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	struct roots_cursor *cursor =
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		wl_container_of(listener, cursor, touch_grab_end);
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	struct wlr_seat_touch_grab *grab = data;
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	roots_cursor_handle_touch_grab_end(cursor, grab);
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}
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static void seat_reset_device_mappings(struct roots_seat *seat, struct wlr_input_device *device) {
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	struct wlr_cursor *cursor = seat->cursor->cursor;
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	struct roots_config *config = seat->input->config;
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			@ -231,6 +247,14 @@ static void roots_seat_init_cursor(struct roots_seat *seat) {
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	wl_signal_add(&seat->seat->events.pointer_grab_end,
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			&seat->cursor->pointer_grab_end);
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	seat->cursor->pointer_grab_end.notify = handle_pointer_grab_end;
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	wl_signal_add(&seat->seat->events.touch_grab_begin,
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			&seat->cursor->touch_grab_begin);
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	seat->cursor->touch_grab_begin.notify = handle_touch_grab_begin;
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	wl_signal_add(&seat->seat->events.touch_grab_end,
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			&seat->cursor->touch_grab_end);
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	seat->cursor->touch_grab_end.notify = handle_touch_grab_end;
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}
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struct roots_seat *roots_seat_create(struct roots_input *input, char *name) {
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			@ -437,8 +437,12 @@ static void wlr_drag_set_focus(struct wlr_drag *drag,
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static void wlr_drag_end(struct wlr_drag *drag) {
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	if (!drag->cancelling) {
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		drag->cancelling = true;
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		wlr_seat_pointer_end_grab(drag->pointer_grab.seat);
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		wlr_seat_keyboard_end_grab(drag->keyboard_grab.seat);
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		if (drag->is_pointer_grab) {
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			wlr_seat_pointer_end_grab(drag->seat);
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		} else {
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			wlr_seat_touch_end_grab(drag->seat);
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		}
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		wlr_seat_keyboard_end_grab(drag->seat);
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		if (drag->source) {
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			wl_list_remove(&drag->source_destroy.link);
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			@ -523,20 +527,34 @@ wlr_pointer_grab_interface wlr_data_device_pointer_drag_interface = {
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static void touch_drag_down(struct wlr_seat_touch_grab *grab, struct wlr_surface *surface,
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			uint32_t time, int32_t touch_id, double sx, double sy) {
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	// TODO
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	// eat the event
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}
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static void touch_drag_up(struct wlr_seat_touch_grab *grab, uint32_t time, int32_t touch_id) {
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	// TODO
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	struct wlr_drag *drag = grab->data;
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	if (drag->grab_touch_id != touch_id) {
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		return;
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	}
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	if (drag->focus_client && drag->focus_client->data_device) {
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		wl_data_device_send_drop(drag->focus_client->data_device);
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	}
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	wlr_drag_end(drag);
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}
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static void touch_drag_motion(struct wlr_seat_touch_grab *grab, uint32_t time, int32_t
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			touch_id, double sx, double sy) {
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	// TODO
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	struct wlr_drag *drag = grab->data;
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	if (drag->focus && drag->focus_client && drag->focus_client->data_device) {
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		wl_data_device_send_motion(drag->focus_client->data_device, time,
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			wl_fixed_from_double(sx), wl_fixed_from_double(sy));
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	}
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}
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static void touch_drag_cancel(struct wlr_seat_touch_grab *grab) {
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	// TODO
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	struct wlr_drag *drag = grab->data;
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	wlr_drag_end(drag);
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}
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const struct wlr_touch_grab_interface wlr_data_device_touch_drag_interface = {
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			@ -594,24 +612,31 @@ static bool seat_client_start_drag(struct wlr_seat_client *client,
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		return false;
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	}
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	struct wlr_seat_pointer_state pointer_state = client->seat->pointer_state;
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	struct wlr_seat_touch_state touch_state = client->seat->touch_state;
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	drag->seat = client->seat;
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	bool is_pointer_grab = client->pointer &&
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		pointer_state.button_count == 1 &&
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		pointer_state.grab_serial == serial &&
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		pointer_state.focused_surface &&
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		pointer_state.focused_surface == origin;
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	drag->is_pointer_grab = client->pointer != NULL &&
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		client->seat->pointer_state.button_count == 1 &&
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		client->seat->pointer_state.grab_serial == serial &&
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		client->seat->pointer_state.focused_surface &&
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		client->seat->pointer_state.focused_surface == origin;
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	bool is_touch_grab = client->touch &&
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		wl_list_length(&touch_state.touch_points) == 1 &&
 | 
			
		||||
		touch_state.grab_serial == serial;
 | 
			
		||||
		wl_list_length(&client->seat->touch_state.touch_points) == 1 &&
 | 
			
		||||
		client->seat->touch_state.grab_serial == serial;
 | 
			
		||||
 | 
			
		||||
	if (!is_pointer_grab || !is_touch_grab) {
 | 
			
		||||
		return true;
 | 
			
		||||
	struct wlr_touch_point *point = NULL;
 | 
			
		||||
	if (is_touch_grab) {
 | 
			
		||||
		wl_list_for_each(point, &client->seat->touch_state.touch_points, link) {
 | 
			
		||||
			if (point->surface && point->surface == origin) {
 | 
			
		||||
				is_touch_grab = true;
 | 
			
		||||
			}
 | 
			
		||||
			break;
 | 
			
		||||
		}
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	struct wlr_seat *seat = client->seat;
 | 
			
		||||
	if (!drag->is_pointer_grab && !is_touch_grab) {
 | 
			
		||||
		return true;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	if (icon) {
 | 
			
		||||
		drag->icon = icon;
 | 
			
		||||
| 
						 | 
				
			
			@ -632,17 +657,19 @@ static bool seat_client_start_drag(struct wlr_seat_client *client,
 | 
			
		|||
 | 
			
		||||
	drag->touch_grab.data = drag;
 | 
			
		||||
	drag->touch_grab.interface = &wlr_data_device_touch_drag_interface;
 | 
			
		||||
	drag->grab_touch_id = drag->seat->touch_state.grab_id;
 | 
			
		||||
 | 
			
		||||
	drag->keyboard_grab.data = drag;
 | 
			
		||||
	drag->keyboard_grab.interface = &wlr_data_device_keyboard_drag_interface;
 | 
			
		||||
 | 
			
		||||
	wlr_seat_keyboard_start_grab(seat, &drag->keyboard_grab);
 | 
			
		||||
	wlr_seat_keyboard_start_grab(drag->seat, &drag->keyboard_grab);
 | 
			
		||||
 | 
			
		||||
	if (is_pointer_grab) {
 | 
			
		||||
		wlr_seat_pointer_clear_focus(seat);
 | 
			
		||||
		wlr_seat_pointer_start_grab(seat, &drag->pointer_grab);
 | 
			
		||||
	if (drag->is_pointer_grab) {
 | 
			
		||||
		wlr_seat_pointer_clear_focus(drag->seat);
 | 
			
		||||
		wlr_seat_pointer_start_grab(drag->seat, &drag->pointer_grab);
 | 
			
		||||
	} else {
 | 
			
		||||
		wlr_seat_touch_start_grab(seat, &drag->touch_grab);
 | 
			
		||||
		wlr_seat_touch_start_grab(drag->seat, &drag->touch_grab);
 | 
			
		||||
		wlr_drag_set_focus(drag, point->surface, point->sx, point->sy);
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	return true;
 | 
			
		||||
| 
						 | 
				
			
			@ -654,20 +681,10 @@ static void data_device_start_drag(struct wl_client *client,
 | 
			
		|||
		struct wl_resource *origin_resource, struct wl_resource *icon_resource,
 | 
			
		||||
		uint32_t serial) {
 | 
			
		||||
	struct wlr_seat_client *seat_client = wl_resource_get_user_data(device_resource);
 | 
			
		||||
	struct wlr_seat *seat = seat_client->seat;
 | 
			
		||||
	struct wlr_surface *origin = wl_resource_get_user_data(origin_resource);
 | 
			
		||||
	struct wlr_data_source *source = NULL;
 | 
			
		||||
	struct wlr_surface *icon = NULL;
 | 
			
		||||
 | 
			
		||||
	bool is_pointer_grab = seat->pointer_state.button_count == 1 &&
 | 
			
		||||
		seat->pointer_state.grab_serial == serial &&
 | 
			
		||||
		seat->pointer_state.focused_surface &&
 | 
			
		||||
		seat->pointer_state.focused_surface == origin;
 | 
			
		||||
 | 
			
		||||
	if (!is_pointer_grab) {
 | 
			
		||||
		return;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	if (source_resource) {
 | 
			
		||||
		source = wl_resource_get_user_data(source_resource);
 | 
			
		||||
	}
 | 
			
		||||
| 
						 | 
				
			
			
 | 
			
		|||
| 
						 | 
				
			
			@ -378,6 +378,7 @@ struct wlr_seat *wlr_seat_create(struct wl_display *display, const char *name) {
 | 
			
		|||
		return NULL;
 | 
			
		||||
	}
 | 
			
		||||
	touch_grab->interface = &default_touch_grab_impl;
 | 
			
		||||
	touch_grab->seat = wlr_seat;
 | 
			
		||||
	wlr_seat->touch_state.default_grab = touch_grab;
 | 
			
		||||
	wlr_seat->touch_state.grab = touch_grab;
 | 
			
		||||
 | 
			
		||||
| 
						 | 
				
			
			@ -600,7 +601,9 @@ void wlr_seat_pointer_send_axis(struct wlr_seat *wlr_seat, uint32_t time,
 | 
			
		|||
 | 
			
		||||
void wlr_seat_pointer_start_grab(struct wlr_seat *wlr_seat,
 | 
			
		||||
		struct wlr_seat_pointer_grab *grab) {
 | 
			
		||||
	assert(wlr_seat);
 | 
			
		||||
	grab->seat = wlr_seat;
 | 
			
		||||
	assert(grab->seat);
 | 
			
		||||
	wlr_seat->pointer_state.grab = grab;
 | 
			
		||||
 | 
			
		||||
	wl_signal_emit(&wlr_seat->events.pointer_grab_begin, grab);
 | 
			
		||||
| 
						 | 
				
			
			@ -959,37 +962,58 @@ struct wlr_touch_point *wlr_seat_touch_get_point(
 | 
			
		|||
void wlr_seat_touch_notify_down(struct wlr_seat *seat,
 | 
			
		||||
		struct wlr_surface *surface, uint32_t time, int32_t touch_id, double sx,
 | 
			
		||||
		double sy) {
 | 
			
		||||
	clock_gettime(CLOCK_MONOTONIC, &seat->last_event);
 | 
			
		||||
	struct wlr_seat_touch_grab *grab = seat->touch_state.grab;
 | 
			
		||||
	struct wlr_touch_point *point =
 | 
			
		||||
		touch_point_create(seat, touch_id, surface, sx, sy);
 | 
			
		||||
	if (!point) {
 | 
			
		||||
		wlr_log(L_ERROR, "could not create touch point");
 | 
			
		||||
		return;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	grab->interface->down(grab, surface, time, touch_id, sx, sy);
 | 
			
		||||
	if (wl_list_length(&seat->touch_state.touch_points) == 1) {
 | 
			
		||||
		seat->touch_state.grab_serial = wl_display_get_serial(seat->display);
 | 
			
		||||
		seat->touch_state.grab_id = touch_id;
 | 
			
		||||
	}
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
void wlr_seat_touch_notify_up(struct wlr_seat *seat, uint32_t time,
 | 
			
		||||
		int32_t touch_id) {
 | 
			
		||||
	clock_gettime(CLOCK_MONOTONIC, &seat->last_event);
 | 
			
		||||
	struct wlr_seat_touch_grab *grab = seat->touch_state.grab;
 | 
			
		||||
	struct wlr_touch_point *point = wlr_seat_touch_get_point(seat, touch_id);
 | 
			
		||||
	if (!point) {
 | 
			
		||||
		wlr_log(L_ERROR, "got touch up for unknown touch point");
 | 
			
		||||
		return;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	grab->interface->up(grab, time, touch_id);
 | 
			
		||||
	touch_point_destroy(point);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
void wlr_seat_touch_notify_motion(struct wlr_seat *seat, uint32_t time,
 | 
			
		||||
		int32_t touch_id, double sx, double sy) {
 | 
			
		||||
	clock_gettime(CLOCK_MONOTONIC, &seat->last_event);
 | 
			
		||||
	struct wlr_seat_touch_grab *grab = seat->touch_state.grab;
 | 
			
		||||
	struct wlr_touch_point *point = wlr_seat_touch_get_point(seat, touch_id);
 | 
			
		||||
	if (!point) {
 | 
			
		||||
		wlr_log(L_ERROR, "got touch motion for unknown touch point");
 | 
			
		||||
		return;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	point->sx = sx;
 | 
			
		||||
	point->sy = sy;
 | 
			
		||||
 | 
			
		||||
	grab->interface->motion(grab, time, touch_id, sx, sy);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
void wlr_seat_touch_send_down(struct wlr_seat *seat,
 | 
			
		||||
		struct wlr_surface *surface, uint32_t time, int32_t touch_id, double sx,
 | 
			
		||||
		double sy) {
 | 
			
		||||
	if (wlr_seat_touch_get_point(seat, touch_id)) {
 | 
			
		||||
		wlr_log(L_ERROR, "got touch down for a touch point that's already down");
 | 
			
		||||
		return;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	struct wlr_touch_point *point =
 | 
			
		||||
		touch_point_create(seat, touch_id, surface, sx, sy);
 | 
			
		||||
	struct wlr_touch_point *point = wlr_seat_touch_get_point(seat, touch_id);
 | 
			
		||||
	if (!point) {
 | 
			
		||||
		wlr_log(L_ERROR, "could not create touch point");
 | 
			
		||||
		wlr_log(L_ERROR, "got touch down for unknown touch point");
 | 
			
		||||
		return;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
| 
						 | 
				
			
			@ -1009,7 +1033,6 @@ void wlr_seat_touch_send_up(struct wlr_seat *seat, uint32_t time, int32_t touch_
 | 
			
		|||
	uint32_t serial = wl_display_next_serial(seat->display);
 | 
			
		||||
	wl_touch_send_up(point->client->touch, serial, time, touch_id);
 | 
			
		||||
	wl_touch_send_frame(point->client->touch);
 | 
			
		||||
	touch_point_destroy(point);
 | 
			
		||||
}
 | 
			
		||||
 | 
			
		||||
void wlr_seat_touch_send_motion(struct wlr_seat *seat, uint32_t time, int32_t touch_id,
 | 
			
		||||
| 
						 | 
				
			
			@ -1020,9 +1043,6 @@ void wlr_seat_touch_send_motion(struct wlr_seat *seat, uint32_t time, int32_t to
 | 
			
		|||
		return;
 | 
			
		||||
	}
 | 
			
		||||
 | 
			
		||||
	point->sx = sx;
 | 
			
		||||
	point->sy = sy;
 | 
			
		||||
 | 
			
		||||
	wl_touch_send_motion(point->client->touch, time, touch_id,
 | 
			
		||||
		wl_fixed_from_double(sx), wl_fixed_from_double(sy));
 | 
			
		||||
	wl_touch_send_frame(point->client->touch);
 | 
			
		||||
| 
						 | 
				
			
			
 | 
			
		|||
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