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https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2026-04-18 06:47:31 -04:00
data_device: expose drag manipulation logic
This commit is contained in:
Kirill Primak
parent
63f5851b6f
commit
41823f3086
2 changed files with 165 additions and 144 deletions
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@ -201,6 +201,18 @@ void wlr_seat_start_pointer_drag(struct wlr_seat *seat, struct wlr_drag *drag,
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void wlr_seat_start_touch_drag(struct wlr_seat *seat, struct wlr_drag *drag,
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uint32_t serial, struct wlr_touch_point *point);
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void wlr_seat_drag_enter(struct wlr_seat *seat, struct wlr_surface *surface,
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double sx, double sy);
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void wlr_seat_drag_clear_focus(struct wlr_seat *seat);
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void wlr_seat_drag_send_motion(struct wlr_seat *seat, uint32_t time_msec,
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double sx, double sy);
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void wlr_seat_drag_drop_and_destroy(struct wlr_seat *seat, uint32_t time_msec);
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void wlr_seat_drag_destroy(struct wlr_seat *seat);
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/**
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* Initializes the data source with the provided implementation.
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*/
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@ -19,93 +19,6 @@ static void drag_handle_seat_client_destroy(struct wl_listener *listener,
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wl_list_remove(&drag->seat_client_destroy.link);
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}
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static void drag_set_focus(struct wlr_drag *drag,
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struct wlr_surface *surface, double sx, double sy) {
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if (drag->focus == surface) {
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return;
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}
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if (drag->focus_client) {
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wl_list_remove(&drag->seat_client_destroy.link);
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// If we're switching focus to another client, we want to destroy all
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// offers without destroying the source. If the drag operation ends, we
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// want to keep the offer around for the data transfer.
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struct wlr_data_offer *offer, *tmp;
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wl_list_for_each_safe(offer, tmp,
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&drag->focus_client->seat->drag_offers, link) {
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struct wl_client *client = wl_resource_get_client(offer->resource);
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if (!drag->dropped && offer->source == drag->source &&
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client == drag->focus_client->client) {
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offer->source = NULL;
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data_offer_destroy(offer);
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}
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}
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struct wl_resource *resource;
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wl_resource_for_each(resource, &drag->focus_client->data_devices) {
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wl_data_device_send_leave(resource);
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}
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drag->focus_client = NULL;
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drag->focus = NULL;
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}
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if (!surface) {
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goto out;
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}
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if (!drag->source && drag->seat_client &&
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wl_resource_get_client(surface->resource) !=
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drag->seat_client->client) {
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goto out;
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}
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struct wlr_seat_client *focus_client = wlr_seat_client_for_wl_client(
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drag->seat, wl_resource_get_client(surface->resource));
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if (!focus_client) {
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goto out;
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}
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if (drag->source != NULL) {
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drag->source->accepted = false;
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uint32_t serial =
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wl_display_next_serial(drag->seat->display);
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struct wl_resource *device_resource;
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wl_resource_for_each(device_resource, &focus_client->data_devices) {
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struct wlr_data_offer *offer = data_offer_create(device_resource,
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drag->source, WLR_DATA_OFFER_DRAG);
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if (offer == NULL) {
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wl_resource_post_no_memory(device_resource);
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return;
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}
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data_offer_update_action(offer);
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if (wl_resource_get_version(offer->resource) >=
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WL_DATA_OFFER_SOURCE_ACTIONS_SINCE_VERSION) {
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wl_data_offer_send_source_actions(offer->resource,
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drag->source->actions);
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}
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wl_data_device_send_enter(device_resource, serial,
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surface->resource,
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wl_fixed_from_double(sx), wl_fixed_from_double(sy),
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offer->resource);
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}
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}
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drag->focus = surface;
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drag->focus_client = focus_client;
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drag->seat_client_destroy.notify = drag_handle_seat_client_destroy;
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wl_signal_add(&focus_client->events.destroy, &drag->seat_client_destroy);
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out:
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wl_signal_emit_mutable(&drag->events.focus, drag);
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}
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static void drag_icon_destroy(struct wlr_drag_icon *icon) {
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icon->drag->icon = NULL;
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wl_list_remove(&icon->surface_destroy.link);
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@ -134,7 +47,7 @@ static void drag_destroy(struct wlr_drag *drag) {
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}
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if (drag->started) {
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drag_set_focus(drag, NULL, 0, 0);
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wlr_seat_drag_clear_focus(drag->seat);
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assert(drag->seat->drag == drag);
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drag->seat->drag = NULL;
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@ -159,33 +72,16 @@ static void drag_destroy(struct wlr_drag *drag) {
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static void drag_handle_pointer_enter(struct wlr_seat_pointer_grab *grab,
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struct wlr_surface *surface, double sx, double sy) {
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struct wlr_drag *drag = grab->data;
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drag_set_focus(drag, surface, sx, sy);
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wlr_seat_drag_enter(grab->seat, surface, sx, sy);
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}
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static void drag_handle_pointer_clear_focus(struct wlr_seat_pointer_grab *grab) {
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struct wlr_drag *drag = grab->data;
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drag_set_focus(drag, NULL, 0, 0);
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wlr_seat_drag_clear_focus(grab->seat);
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}
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static void drag_handle_pointer_motion(struct wlr_seat_pointer_grab *grab,
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uint32_t time, double sx, double sy) {
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struct wlr_drag *drag = grab->data;
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if (drag->focus != NULL && drag->focus_client != NULL) {
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struct wl_resource *resource;
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wl_resource_for_each(resource, &drag->focus_client->data_devices) {
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wl_data_device_send_motion(resource, time, wl_fixed_from_double(sx),
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wl_fixed_from_double(sy));
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}
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struct wlr_drag_motion_event event = {
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.drag = drag,
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.time = time,
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.sx = sx,
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.sy = sy,
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};
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wl_signal_emit_mutable(&drag->events.motion, &event);
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}
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wlr_seat_drag_send_motion(grab->seat, time, sx, sy);
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}
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static void drag_drop(struct wlr_drag *drag, uint32_t time) {
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@ -210,26 +106,7 @@ static void drag_drop(struct wlr_drag *drag, uint32_t time) {
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static uint32_t drag_handle_pointer_button(struct wlr_seat_pointer_grab *grab,
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uint32_t time, uint32_t button, uint32_t state) {
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struct wlr_drag *drag = grab->data;
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if (drag->source &&
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grab->seat->pointer_state.grab_button == button &&
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state == WL_POINTER_BUTTON_STATE_RELEASED) {
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if (drag->focus_client && drag->source->current_dnd_action &&
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drag->source->accepted) {
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drag_drop(drag, time);
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} else if (drag->source->impl->dnd_finish) {
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// This will end the grab and free `drag`
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wlr_data_source_destroy(drag->source);
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return 0;
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}
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}
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if (grab->seat->pointer_state.button_count == 0 &&
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state == WL_POINTER_BUTTON_STATE_RELEASED) {
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drag_destroy(drag);
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}
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wlr_seat_drag_drop_and_destroy(grab->seat, time);
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return 0;
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}
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@ -266,31 +143,21 @@ static void drag_handle_touch_up(struct wlr_seat_touch_grab *grab,
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if (drag->grab_touch_id != point->touch_id) {
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return;
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}
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if (drag->focus_client) {
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drag_drop(drag, time);
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}
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drag_destroy(drag);
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wlr_seat_drag_drop_and_destroy(grab->seat, time);
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}
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static void drag_handle_touch_motion(struct wlr_seat_touch_grab *grab,
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uint32_t time, struct wlr_touch_point *point) {
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struct wlr_drag *drag = grab->data;
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if (drag->focus && drag->focus_client) {
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struct wl_resource *resource;
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wl_resource_for_each(resource, &drag->focus_client->data_devices) {
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wl_data_device_send_motion(resource, time,
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wl_fixed_from_double(point->sx),
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wl_fixed_from_double(point->sy));
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}
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if (drag->grab_touch_id != point->touch_id) {
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return;
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}
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wlr_seat_drag_send_motion(grab->seat, time, point->sx, point->sy);
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}
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static void drag_handle_touch_enter(struct wlr_seat_touch_grab *grab,
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uint32_t time, struct wlr_touch_point *point) {
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struct wlr_drag *drag = grab->data;
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drag_set_focus(drag, point->focus_surface, point->sx, point->sy);
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wlr_seat_drag_enter(grab->seat, point->focus_surface, point->sx, point->sy);
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}
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static void drag_handle_touch_cancel(struct wlr_seat_touch_grab *grab) {
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@ -508,7 +375,149 @@ void wlr_seat_start_touch_drag(struct wlr_seat *seat, struct wlr_drag *drag,
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drag->touch_id = point->touch_id;
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wlr_seat_touch_start_grab(seat, &drag->touch_grab);
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drag_set_focus(drag, point->surface, point->sx, point->sy);
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wlr_seat_drag_enter(seat, point->surface, point->sx, point->sy);
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wlr_seat_start_drag(seat, drag, serial);
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}
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void wlr_seat_drag_enter(struct wlr_seat *seat, struct wlr_surface *surface,
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double sx, double sy) {
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struct wlr_drag *drag = seat->drag;
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assert(drag != NULL);
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if (drag->focus == surface) {
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return;
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}
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if (drag->focus_client) {
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wl_list_remove(&drag->seat_client_destroy.link);
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// If we're switching focus to another client, we want to destroy all
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// offers without destroying the source. If the drag operation ends, we
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// want to keep the offer around for the data transfer.
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struct wlr_data_offer *offer, *tmp;
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wl_list_for_each_safe(offer, tmp,
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&drag->focus_client->seat->drag_offers, link) {
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struct wl_client *client = wl_resource_get_client(offer->resource);
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if (!drag->dropped && offer->source == drag->source &&
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client == drag->focus_client->client) {
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offer->source = NULL;
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data_offer_destroy(offer);
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}
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}
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struct wl_resource *resource;
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wl_resource_for_each(resource, &drag->focus_client->data_devices) {
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wl_data_device_send_leave(resource);
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}
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drag->focus_client = NULL;
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drag->focus = NULL;
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}
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if (!surface) {
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goto out;
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}
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if (!drag->source && drag->seat_client &&
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wl_resource_get_client(surface->resource) !=
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drag->seat_client->client) {
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goto out;
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}
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struct wlr_seat_client *focus_client = wlr_seat_client_for_wl_client(
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drag->seat, wl_resource_get_client(surface->resource));
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if (!focus_client) {
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goto out;
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}
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if (drag->source != NULL) {
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drag->source->accepted = false;
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uint32_t serial =
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wl_display_next_serial(drag->seat->display);
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struct wl_resource *device_resource;
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wl_resource_for_each(device_resource, &focus_client->data_devices) {
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struct wlr_data_offer *offer = data_offer_create(device_resource,
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drag->source, WLR_DATA_OFFER_DRAG);
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if (offer == NULL) {
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wl_resource_post_no_memory(device_resource);
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return;
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}
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data_offer_update_action(offer);
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if (wl_resource_get_version(offer->resource) >=
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WL_DATA_OFFER_SOURCE_ACTIONS_SINCE_VERSION) {
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wl_data_offer_send_source_actions(offer->resource,
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drag->source->actions);
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}
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wl_data_device_send_enter(device_resource, serial,
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surface->resource,
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wl_fixed_from_double(sx), wl_fixed_from_double(sy),
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offer->resource);
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}
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}
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drag->focus = surface;
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drag->focus_client = focus_client;
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drag->seat_client_destroy.notify = drag_handle_seat_client_destroy;
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wl_signal_add(&focus_client->events.destroy, &drag->seat_client_destroy);
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out:
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wl_signal_emit_mutable(&drag->events.focus, drag);
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}
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void wlr_seat_drag_clear_focus(struct wlr_seat *seat) {
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wlr_seat_drag_enter(seat, NULL, 0, 0);
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}
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void wlr_seat_drag_send_motion(struct wlr_seat *seat, uint32_t time_msec,
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double sx, double sy) {
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struct wlr_drag *drag = seat->drag;
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assert(drag != NULL);
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if (drag->focus != NULL && drag->focus_client != NULL) {
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struct wl_resource *resource;
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wl_resource_for_each(resource, &drag->focus_client->data_devices) {
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wl_data_device_send_motion(resource, time_msec,
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wl_fixed_from_double(sx), wl_fixed_from_double(sy));
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}
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struct wlr_drag_motion_event event = {
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.drag = drag,
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.time = time_msec,
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.sx = sx,
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.sy = sy,
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};
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wl_signal_emit_mutable(&drag->events.motion, &event);
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}
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}
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void wlr_seat_drag_drop_and_destroy(struct wlr_seat *seat, uint32_t time_msec) {
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struct wlr_drag *drag = seat->drag;
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assert(drag != NULL);
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if (drag->source != NULL) {
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if (drag->focus_client != NULL &&
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drag->source->current_dnd_action != WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE &&
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drag->source->accepted) {
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drag_drop(drag, time_msec);
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} else if (drag->source->impl->dnd_finish != NULL) {
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// This will call drag_destroy()
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wlr_data_source_destroy(drag->source);
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return;
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}
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}
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drag_destroy(drag);
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}
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void wlr_seat_drag_destroy(struct wlr_seat *seat) {
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struct wlr_drag *drag = seat->drag;
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assert(drag != NULL);
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drag_destroy(drag);
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}
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