wlr-data-device: basic drag and drop
This commit is contained in:
Tony Crisci
parent
07259cf8ea
commit
a1bfa4a2f2
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@ -2,6 +2,7 @@
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#define WLR_TYPES_WLR_DATA_DEVICE_H
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#include <wayland-server.h>
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#include <wlr/types/wlr_seat.h>
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struct wlr_data_device_manager {
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struct wl_global *global;
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@ -37,6 +38,20 @@ struct wlr_data_source {
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} events;
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};
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struct wlr_drag {
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struct wlr_seat_pointer_grab pointer_grab;
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struct wlr_seat_handle *handle;
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struct wlr_seat_handle *focus_handle;
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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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struct wl_listener icon_destroy;
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struct wl_listener source_destroy;
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struct wl_listener handle_unbound;
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};
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/**
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* Create a wl data device manager global for this display.
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*/
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@ -9,16 +9,79 @@
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#include <wlr/types/wlr_seat.h>
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#include <wlr/types/wlr_data_device.h>
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#define ALL_ACTIONS (WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY | \
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WL_DATA_DEVICE_MANAGER_DND_ACTION_MOVE | \
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WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK)
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static void data_device_start_drag(struct wl_client *client, struct wl_resource
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*resource, struct wl_resource *source_resource,
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struct wl_resource *origin, struct wl_resource *icon, uint32_t serial) {
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wlr_log(L_DEBUG, "TODO: data device start drag");
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static uint32_t data_offer_choose_action(struct wlr_data_offer *offer) {
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uint32_t available_actions, preferred_action = 0;
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uint32_t source_actions, offer_actions;
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if (wl_resource_get_version(offer->resource) >=
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WL_DATA_OFFER_ACTION_SINCE_VERSION) {
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offer_actions = offer->dnd_actions;
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preferred_action = offer->preferred_dnd_action;
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} else {
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offer_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
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}
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if (wl_resource_get_version(offer->source->resource) >=
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WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
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source_actions = offer->source->dnd_actions;
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} else {
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source_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
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}
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available_actions = offer_actions & source_actions;
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if (!available_actions) {
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return WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE;
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}
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if (offer->source->seat &&
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offer->source->compositor_action & available_actions) {
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return offer->source->compositor_action;
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}
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// If the dest side has a preferred DnD action, use it
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if ((preferred_action & available_actions) != 0) {
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return preferred_action;
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}
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// Use the first found action, in bit order
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return 1 << (ffs(available_actions) - 1);
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}
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static void data_offer_update_action(struct wlr_data_offer *offer) {
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uint32_t action;
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if (!offer->source) {
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return;
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}
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action = data_offer_choose_action(offer);
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if (offer->source->current_dnd_action == action) {
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return;
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}
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offer->source->current_dnd_action = action;
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if (offer->in_ask) {
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return;
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}
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if (wl_resource_get_version(offer->source->resource) >=
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WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
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wl_data_source_send_action(offer->source->resource, action);
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}
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if (wl_resource_get_version(offer->resource) >=
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WL_DATA_OFFER_ACTION_SINCE_VERSION) {
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wl_data_offer_send_action(offer->resource, action);
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}
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}
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static void data_source_accept(struct wlr_data_source *source,
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uint32_t time, const char *mime_type) {
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wl_data_source_send_target(source->resource, mime_type);
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@ -94,75 +157,6 @@ static void data_offer_finish(struct wl_client *client,
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data_source_notify_finish(offer->source);
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}
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static uint32_t data_offer_choose_action(struct wlr_data_offer *offer) {
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uint32_t available_actions, preferred_action = 0;
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uint32_t source_actions, offer_actions;
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if (wl_resource_get_version(offer->resource) >=
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WL_DATA_OFFER_ACTION_SINCE_VERSION) {
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offer_actions = offer->dnd_actions;
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preferred_action = offer->preferred_dnd_action;
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} else {
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offer_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
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}
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if (wl_resource_get_version(offer->source->resource) >=
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WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
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source_actions = offer->source->dnd_actions;
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} else {
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source_actions = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
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}
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available_actions = offer_actions & source_actions;
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if (!available_actions) {
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return WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE;
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}
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if (offer->source->seat &&
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offer->source->compositor_action & available_actions) {
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return offer->source->compositor_action;
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}
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// If the dest side has a preferred DnD action, use it
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if ((preferred_action & available_actions) != 0) {
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return preferred_action;
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}
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// Use the first found action, in bit order
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return 1 << (ffs(available_actions) - 1);
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}
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static void data_offer_update_action(struct wlr_data_offer *offer) {
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uint32_t action;
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if (!offer->source) {
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return;
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}
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action = data_offer_choose_action(offer);
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if (offer->source->current_dnd_action == action) {
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return;
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}
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offer->source->current_dnd_action = action;
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if (offer->in_ask) {
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return;
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}
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if (wl_resource_get_version(offer->source->resource) >=
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WL_DATA_SOURCE_ACTION_SINCE_VERSION) {
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wl_data_source_send_action(offer->source->resource, action);
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}
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if (wl_resource_get_version(offer->resource) >=
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WL_DATA_OFFER_ACTION_SINCE_VERSION) {
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wl_data_offer_send_action(offer->resource, action);
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}
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}
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static void data_offer_set_actions(struct wl_client *client,
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struct wl_resource *resource, uint32_t dnd_actions,
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uint32_t preferred_action) {
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@ -348,6 +342,244 @@ static void data_device_release(struct wl_client *client,
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wl_resource_destroy(resource);
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}
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static void drag_handle_seat_unbound(struct wl_listener *listener, void *data) {
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struct wlr_drag *drag = wl_container_of(listener, drag, handle_unbound);
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struct wlr_seat_handle *unbound_handle = data;
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if (drag->focus_handle == unbound_handle) {
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drag->focus_handle = NULL;
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}
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}
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static void wlr_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_handle && drag->focus_handle->data_device) {
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wl_list_remove(&drag->handle_unbound.link);
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wl_data_device_send_leave(drag->focus_handle->data_device);
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drag->focus_handle = NULL;
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drag->focus = NULL;
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}
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if (!surface || !surface->resource) {
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return;
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}
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if (!drag->source &&
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wl_resource_get_client(surface->resource) !=
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wl_resource_get_client(drag->handle->wl_resource)) {
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return;
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}
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if (drag->source && drag->source->offer) {
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// unlink the offer from the source
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wl_list_remove(&drag->source->offer->source_destroy.link);
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drag->source->offer->source = NULL;
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drag->source->offer = NULL;
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}
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struct wlr_seat_handle *focus_handle =
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wlr_seat_handle_for_client(drag->handle->wlr_seat,
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wl_resource_get_client(surface->resource));
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if (!focus_handle || !focus_handle->data_device) {
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return;
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}
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struct wl_resource *offer_resource = NULL;
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if (drag->source) {
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drag->source->accepted = false;
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struct wlr_data_offer *offer =
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wlr_data_source_send_offer(drag->source, focus_handle->data_device);
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if (offer == NULL) {
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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->dnd_actions);
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}
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offer_resource = offer->resource;
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}
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uint32_t serial = wl_display_next_serial(drag->handle->wlr_seat->display);
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wl_data_device_send_enter(focus_handle->data_device, serial,
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surface->resource, wl_fixed_from_double(sx),
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wl_fixed_from_double(sy), offer_resource);
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drag->focus = surface;
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drag->focus_handle = focus_handle;
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drag->handle_unbound.notify = drag_handle_seat_unbound;
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wl_signal_add(&focus_handle->wlr_seat->events.client_unbound,
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&drag->handle_unbound);
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}
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static void wlr_drag_end(struct wlr_drag *drag) {
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if (drag->icon) {
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wl_list_remove(&drag->icon_destroy.link);
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}
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if (drag->source) {
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wl_list_remove(&drag->source_destroy.link);
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}
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wlr_drag_set_focus(drag, NULL, 0, 0);
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wlr_seat_pointer_end_grab(drag->pointer_grab.seat);
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free(drag);
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}
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static void pointer_drag_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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wlr_drag_set_focus(drag, surface, sx, sy);
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}
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static void pointer_drag_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 && drag->focus_handle && drag->focus_handle->data_device) {
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wl_data_device_send_motion(drag->focus_handle->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 uint32_t pointer_drag_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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// TODO check no buttons are pressed to end the drag
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// TODO make sure the button pressed to do the drag was the same to end the
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// drag
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if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
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if (drag->source) {
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if (drag->focus_handle && drag->focus_handle->data_device &&
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drag->source->current_dnd_action &&
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drag->source->accepted) {
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wl_data_device_send_drop(drag->focus_handle->data_device);
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if (wl_resource_get_version(drag->source->resource) >=
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WL_DATA_SOURCE_DND_DROP_PERFORMED_SINCE_VERSION) {
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wl_data_source_send_dnd_drop_performed(
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drag->source->resource);
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}
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drag->source->offer->in_ask =
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drag->source->current_dnd_action ==
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WL_DATA_DEVICE_MANAGER_DND_ACTION_ASK;
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}
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} else if (wl_resource_get_version(drag->source->resource) >=
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WL_DATA_SOURCE_DND_FINISHED_SINCE_VERSION) {
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wl_data_source_send_cancelled(drag->source->resource);
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}
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wlr_drag_end(drag);
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}
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return 0;
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}
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static void pointer_drag_axis(struct wlr_seat_pointer_grab *grab, uint32_t time,
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enum wlr_axis_orientation orientation, double value) {
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}
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static void pointer_drag_cancel(struct wlr_seat_pointer_grab *grab) {
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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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static const struct wlr_pointer_grab_interface pointer_drag_interface = {
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.enter = pointer_drag_enter,
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.motion = pointer_drag_motion,
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.button = pointer_drag_button,
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.axis = pointer_drag_axis,
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.cancel = pointer_drag_cancel,
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};
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static void drag_handle_icon_destroy(struct wl_listener *listener, void *data) {
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struct wlr_drag *drag = wl_container_of(listener, drag, icon_destroy);
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drag->icon = NULL;
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}
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static void drag_handle_drag_source_destroy(struct wl_listener *listener,
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void *data) {
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struct wlr_drag *drag = wl_container_of(listener, drag, source_destroy);
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wlr_drag_end(drag);
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}
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static bool seat_handle_start_drag(struct wlr_seat_handle *handle,
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struct wlr_data_source *source, struct wlr_surface *icon) {
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struct wlr_drag *drag = calloc(1, sizeof(struct wlr_drag));
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if (drag == NULL) {
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return false;
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}
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if (drag->icon) {
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drag->icon_destroy.notify = drag_handle_icon_destroy;
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wl_signal_add(&icon->events.destroy, &drag->icon_destroy);
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drag->icon = icon;
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}
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if (source) {
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drag->source_destroy.notify = drag_handle_drag_source_destroy;
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wl_signal_add(&source->events.destroy, &drag->source_destroy);
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drag->source = source;
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}
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drag->handle = handle;
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drag->pointer_grab.data = drag;
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drag->pointer_grab.interface = &pointer_drag_interface;
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wlr_seat_pointer_clear_focus(handle->wlr_seat);
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wlr_seat_pointer_start_grab(handle->wlr_seat, &drag->pointer_grab);
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// TODO keyboard grab
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return true;
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}
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static void data_device_start_drag(struct wl_client *client,
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struct wl_resource *handle_resource,
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struct wl_resource *source_resource,
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struct wl_resource *origin_resource, struct wl_resource *icon_resource,
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uint32_t serial) {
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struct wlr_seat_handle *handle = wl_resource_get_user_data(handle_resource);
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struct wlr_surface *origin = wl_resource_get_user_data(origin_resource);
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struct wlr_data_source *source = NULL;
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struct wlr_surface *icon = NULL;
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if (source_resource) {
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source = wl_resource_get_user_data(source_resource);
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}
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if (icon_resource) {
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icon = wl_resource_get_user_data(icon_resource);
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}
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if (icon) {
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if (wlr_surface_set_role(icon, "wl_data_device-icon",
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handle_resource, WL_DATA_DEVICE_ERROR_ROLE) < 0) {
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return;
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}
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}
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// TODO touch grab
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if (handle->wlr_seat->pointer_state.focused_surface == origin) {
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if (!seat_handle_start_drag(handle, source, icon)) {
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wl_resource_post_no_memory(handle_resource);
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} else {
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source->seat = handle;
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}
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}
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}
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static const struct wl_data_device_interface data_device_impl = {
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.start_drag = data_device_start_drag,
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.set_selection = data_device_set_selection,
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@ -404,23 +636,23 @@ static void data_source_set_actions(struct wl_client *client,
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if (source->actions_set) {
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wl_resource_post_error(source->resource,
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"cannot set actions more than once");
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"cannot set actions more than once");
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return;
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}
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if (dnd_actions & ~ALL_ACTIONS) {
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wl_resource_post_error(source->resource,
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"invalid action mask %x", dnd_actions);
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"invalid action mask %x", dnd_actions);
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return;
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}
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if (source->seat) {
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wl_resource_post_error(source->resource,
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"invalid action change after "
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"wl_data_device.start_drag");
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WL_DATA_SOURCE_ERROR_INVALID_ACTION_MASK,
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"invalid action change after "
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"wl_data_device.start_drag");
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return;
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}
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@ -492,8 +724,8 @@ static void data_device_manager_bind(struct wl_client *client,
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return;
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}
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||||
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||||
wl_resource_set_implementation(resource, &data_device_manager_impl,
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||||
NULL, NULL);
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||||
wl_resource_set_implementation(resource,
|
||||
&data_device_manager_impl, NULL, NULL);
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||||
}
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||||
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||||
struct wlr_data_device_manager *wlr_data_device_manager_create(
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||||
|
|
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Reference in New Issue