Ilia Bozhinov
4 years ago
committed by
Simon Ser
parent
42d033e738
commit
37602e153b
@ -0,0 +1,75 @@
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/*
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* This an unstable interface of wlroots. No guarantees are made regarding the
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* future consistency of this API.
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*/
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#ifndef WLR_USE_UNSTABLE
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#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
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#endif
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#ifndef WLR_TYPES_WLR_XDG_FOREIGN_REGISTRY_H
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#define WLR_TYPES_WLR_XDG_FOREIGN_REGISTRY_H
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#include <wayland-server-core.h>
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#define WLR_XDG_FOREIGN_HANDLE_SIZE 37
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/**
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* wlr_xdg_foreign_registry is used for storing a list of exported surfaces with
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* the xdg-foreign family of protocols.
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*
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* It can be used to allow interoperability between clients using different
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* versions of the protocol (if all versions use the same registry).
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*/
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struct wlr_xdg_foreign_registry {
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struct wl_list exported_surfaces; // struct wlr_xdg_foreign_exported_surface
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struct wl_listener display_destroy;
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struct {
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struct wl_signal destroy;
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} events;
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};
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struct wlr_xdg_foreign_exported {
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struct wl_list link; // wlr_xdg_foreign_registry::exported_surfaces
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struct wlr_xdg_foreign_registry *registry;
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struct wlr_surface *surface;
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char handle[WLR_XDG_FOREIGN_HANDLE_SIZE];
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struct {
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struct wl_signal destroy;
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} events;
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};
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/**
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* Create an empty wlr_xdg_foreign_registry.
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*
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* It will be destroyed when the associated display is destroyed.
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*/
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struct wlr_xdg_foreign_registry *wlr_xdg_foreign_registry_create(
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struct wl_display *display);
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/**
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* Add the given exported surface to the registry and assign it a unique handle.
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* The caller is responsible for removing the exported surface from the repository
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* if it is destroyed.
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*
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* Returns true if the initialization was successful.
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*/
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bool wlr_xdg_foreign_exported_init(struct wlr_xdg_foreign_exported *surface,
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struct wlr_xdg_foreign_registry *registry);
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/**
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* Find an exported surface with the given handle, or NULL if such a surface
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* does not exist.
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*/
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struct wlr_xdg_foreign_exported *wlr_xdg_foreign_registry_find_by_handle(
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struct wlr_xdg_foreign_registry *registry, const char *handle);
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/**
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* Remove the given surface from the registry it was previously added in.
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*/
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void wlr_xdg_foreign_exported_finish(struct wlr_xdg_foreign_exported *surface);
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#endif
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@ -0,0 +1,73 @@
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#include <wlr/types/wlr_xdg_foreign_registry.h>
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#include "util/signal.h"
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#include "util/uuid.h"
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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bool wlr_xdg_foreign_exported_init(
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struct wlr_xdg_foreign_exported *exported,
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struct wlr_xdg_foreign_registry *registry) {
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do {
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if (!generate_uuid(exported->handle)) {
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return false;
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}
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} while (wlr_xdg_foreign_registry_find_by_handle(registry, exported->handle) != NULL);
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exported->registry = registry;
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wl_list_insert(®istry->exported_surfaces, &exported->link);
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wl_signal_init(&exported->events.destroy);
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return true;
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}
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struct wlr_xdg_foreign_exported *wlr_xdg_foreign_registry_find_by_handle(
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struct wlr_xdg_foreign_registry *registry, const char *handle) {
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if (handle == NULL || strlen(handle) >= WLR_XDG_FOREIGN_HANDLE_SIZE) {
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return NULL;
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}
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struct wlr_xdg_foreign_exported *exported;
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wl_list_for_each(exported, ®istry->exported_surfaces, link) {
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if (strcmp(handle, exported->handle) == 0) {
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return exported;
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}
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}
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return NULL;
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}
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void wlr_xdg_foreign_exported_finish(struct wlr_xdg_foreign_exported *surface) {
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wlr_signal_emit_safe(&surface->events.destroy, NULL);
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surface->registry = NULL;
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wl_list_remove(&surface->link);
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wl_list_init(&surface->link);
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}
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static void foreign_registry_handle_display_destroy(struct wl_listener *listener,
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void *data) {
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struct wlr_xdg_foreign_registry *registry =
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wl_container_of(listener, registry, display_destroy);
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wlr_signal_emit_safe(®istry->events.destroy, NULL);
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// Implementations are supposed to remove all surfaces
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assert(wl_list_empty(®istry->exported_surfaces));
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free(registry);
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}
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struct wlr_xdg_foreign_registry *wlr_xdg_foreign_registry_create(
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struct wl_display *display) {
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struct wlr_xdg_foreign_registry *registry = calloc(1, sizeof(*registry));
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if (!registry) {
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return NULL;
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}
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registry->display_destroy.notify = foreign_registry_handle_display_destroy;
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wl_display_add_destroy_listener(display, ®istry->display_destroy);
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wl_list_init(®istry->exported_surfaces);
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wl_signal_init(®istry->events.destroy);
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return registry;
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}
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