Add xdg-shell stable support

1 files changed, 277 insertions, 0 deletions

diff --git a/sway/desktop/xdg_shell.c b/sway/desktop/xdg_shell.c
new file mode 100644
index 00000000..48b659f2
--- /dev/null
+++ b/sway/desktop/xdg_shell.c
@@ -0,0 +1,277 @@
+#define _POSIX_C_SOURCE 199309L
+#include <stdbool.h>
+#include <stdlib.h>
+#include <wayland-server.h>
+#include <wlr/types/wlr_xdg_shell.h>
+#include "sway/tree/container.h"
+#include "sway/tree/layout.h"
+#include "sway/server.h"
+#include "sway/tree/view.h"
+#include "sway/input/seat.h"
+#include "sway/input/input-manager.h"
+#include "log.h"
+
+static const struct sway_view_child_impl popup_impl;
+
+static void popup_destroy(struct sway_view_child *child) {
+        if (!sway_assert(child->impl == &popup_impl,
+                        "Expected an xdg_shell popup")) {
+                return;
+        }
+        struct sway_xdg_popup *popup = (struct sway_xdg_popup *)child;
+        wl_list_remove(&popup->new_popup.link);
+        wl_list_remove(&popup->destroy.link);
+        free(popup);
+}
+
+static const struct sway_view_child_impl popup_impl = {
+        .destroy = popup_destroy,
+};
+
+static struct sway_xdg_popup *popup_create(
+        struct wlr_xdg_popup *wlr_popup, struct sway_view *view);
+
+static void popup_handle_new_popup(struct wl_listener *listener, void *data) {
+        struct sway_xdg_popup *popup =
+                wl_container_of(listener, popup, new_popup);
+        struct wlr_xdg_popup *wlr_popup = data;
+        popup_create(wlr_popup, popup->child.view);
+}
+
+static void popup_handle_destroy(struct wl_listener *listener, void *data) {
+        struct sway_xdg_popup *popup = wl_container_of(listener, popup, destroy);
+        view_child_destroy(&popup->child);
+}
+
+static struct sway_xdg_popup *popup_create(
+                struct wlr_xdg_popup *wlr_popup, struct sway_view *view) {
+        struct wlr_xdg_surface *xdg_surface = wlr_popup->base;
+
+        struct sway_xdg_popup *popup =
+                calloc(1, sizeof(struct sway_xdg_popup));
+        if (popup == NULL) {
+                return NULL;
+        }
+        view_child_init(&popup->child, &popup_impl, view, xdg_surface->surface);
+
+        wl_signal_add(&xdg_surface->events.new_popup, &popup->new_popup);
+        popup->new_popup.notify = popup_handle_new_popup;
+        wl_signal_add(&xdg_surface->events.destroy, &popup->destroy);
+        popup->destroy.notify = popup_handle_destroy;
+
+        return popup;
+}
+
+
+static struct sway_xdg_shell_view *xdg_shell_view_from_view(
+                struct sway_view *view) {
+        if (!sway_assert(view->type == SWAY_VIEW_XDG_SHELL,
+                        "Expected xdg_shell view")) {
+                return NULL;
+        }
+        return (struct sway_xdg_shell_view *)view;
+}
+
+static const char *get_prop(struct sway_view *view, enum sway_view_prop prop) {
+        if (xdg_shell_view_from_view(view) == NULL) {
+                return NULL;
+        }
+        switch (prop) {
+        case VIEW_PROP_TITLE:
+                return view->wlr_xdg_surface->toplevel->title;
+        case VIEW_PROP_APP_ID:
+                return view->wlr_xdg_surface->toplevel->app_id;
+        default:
+                return NULL;
+        }
+}
+
+static void configure(struct sway_view *view, double ox, double oy, int width,
+                int height) {
+        struct sway_xdg_shell_view *xdg_shell_view =
+                xdg_shell_view_from_view(view);
+        if (xdg_shell_view == NULL) {
+                return;
+        }
+
+        xdg_shell_view->pending_width = width;
+        xdg_shell_view->pending_height = height;
+        wlr_xdg_toplevel_set_size(view->wlr_xdg_surface, width, height);
+}
+
+static void set_activated(struct sway_view *view, bool activated) {
+        if (xdg_shell_view_from_view(view) == NULL) {
+                return;
+        }
+        struct wlr_xdg_surface *surface = view->wlr_xdg_surface;
+        if (surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+                wlr_xdg_toplevel_set_activated(surface, activated);
+        }
+}
+
+static void set_fullscreen(struct sway_view *view, bool fullscreen) {
+        if (xdg_shell_view_from_view(view) == NULL) {
+                return;
+        }
+        struct wlr_xdg_surface *surface = view->wlr_xdg_surface;
+        wlr_xdg_toplevel_set_fullscreen(surface, fullscreen);
+}
+
+static void for_each_surface(struct sway_view *view,
+                wlr_surface_iterator_func_t iterator, void *user_data) {
+        if (xdg_shell_view_from_view(view) == NULL) {
+                return;
+        }
+        wlr_xdg_surface_for_each_surface(view->wlr_xdg_surface, iterator,
+                user_data);
+}
+
+static void _close(struct sway_view *view) {
+        if (xdg_shell_view_from_view(view) == NULL) {
+                return;
+        }
+        struct wlr_xdg_surface *surface = view->wlr_xdg_surface;
+        if (surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL) {
+                wlr_xdg_surface_send_close(surface);
+        }
+}
+
+static void destroy(struct sway_view *view) {
+        struct sway_xdg_shell_view *xdg_shell_view =
+                xdg_shell_view_from_view(view);
+        if (xdg_shell_view == NULL) {
+                return;
+        }
+        wl_list_remove(&xdg_shell_view->destroy.link);
+        wl_list_remove(&xdg_shell_view->map.link);
+        wl_list_remove(&xdg_shell_view->unmap.link);
+        wl_list_remove(&xdg_shell_view->request_fullscreen.link);
+        free(xdg_shell_view);
+}
+
+static const struct sway_view_impl view_impl = {
+        .get_prop = get_prop,
+        .configure = configure,
+        .set_activated = set_activated,
+        .set_fullscreen = set_fullscreen,
+        .for_each_surface = for_each_surface,
+        .close = _close,
+        .destroy = destroy,
+};
+
+static void handle_commit(struct wl_listener *listener, void *data) {
+        struct sway_xdg_shell_view *xdg_shell_view =
+                wl_container_of(listener, xdg_shell_view, commit);
+        struct sway_view *view = &xdg_shell_view->view;
+        // NOTE: We intentionally discard the view's desired width here
+        // TODO: Store this for restoration when moving to floating plane
+        // TODO: Let floating views do whatever
+        view_update_size(view, xdg_shell_view->pending_width,
+                xdg_shell_view->pending_height);
+        view_update_title(view, false);
+        view_damage_from(view);
+}
+
+static void handle_new_popup(struct wl_listener *listener, void *data) {
+        struct sway_xdg_shell_view *xdg_shell_view =
+                wl_container_of(listener, xdg_shell_view, new_popup);
+        struct wlr_xdg_popup *wlr_popup = data;
+        popup_create(wlr_popup, &xdg_shell_view->view);
+}
+
+static void handle_unmap(struct wl_listener *listener, void *data) {
+        struct sway_xdg_shell_view *xdg_shell_view =
+                wl_container_of(listener, xdg_shell_view, unmap);
+
+        view_unmap(&xdg_shell_view->view);
+
+        wl_list_remove(&xdg_shell_view->commit.link);
+        wl_list_remove(&xdg_shell_view->new_popup.link);
+}
+
+static void handle_map(struct wl_listener *listener, void *data) {
+        struct sway_xdg_shell_view *xdg_shell_view =
+                wl_container_of(listener, xdg_shell_view, map);
+        struct sway_view *view = &xdg_shell_view->view;
+        struct wlr_xdg_surface *xdg_surface = view->wlr_xdg_surface;
+
+        view_map(view, view->wlr_xdg_surface->surface);
+
+        xdg_shell_view->commit.notify = handle_commit;
+        wl_signal_add(&xdg_surface->surface->events.commit,
+                &xdg_shell_view->commit);
+
+        xdg_shell_view->new_popup.notify = handle_new_popup;
+        wl_signal_add(&xdg_surface->events.new_popup,
+                &xdg_shell_view->new_popup);
+
+        if (xdg_surface->toplevel->client_pending.fullscreen) {
+                view_set_fullscreen(view, true);
+        }
+}
+
+static void handle_destroy(struct wl_listener *listener, void *data) {
+        struct sway_xdg_shell_view *xdg_shell_view =
+                wl_container_of(listener, xdg_shell_view, destroy);
+        view_destroy(&xdg_shell_view->view);
+}
+
+static void handle_request_fullscreen(struct wl_listener *listener, void *data) {
+        struct sway_xdg_shell_view *xdg_shell_view =
+                wl_container_of(listener, xdg_shell_view, request_fullscreen);
+        struct wlr_xdg_toplevel_set_fullscreen_event *e = data;
+        struct wlr_xdg_surface *xdg_surface =
+                xdg_shell_view->view.wlr_xdg_surface;
+
+        if (!sway_assert(xdg_surface->role == WLR_XDG_SURFACE_ROLE_TOPLEVEL,
+                                "xdg_shell requested fullscreen of surface with role %i",
+                                xdg_surface->role)) {
+                return;
+        }
+        if (!xdg_surface->mapped) {
+                return;
+        }
+
+        view_set_fullscreen(&xdg_shell_view->view, e->fullscreen);
+}
+
+void handle_xdg_shell_surface(struct wl_listener *listener, void *data) {
+        struct sway_server *server = wl_container_of(listener, server,
+                xdg_shell_surface);
+        struct wlr_xdg_surface *xdg_surface = data;
+
+        if (xdg_surface->role == WLR_XDG_SURFACE_ROLE_POPUP) {
+                wlr_log(L_DEBUG, "New xdg_shell popup");
+                return;
+        }
+
+        wlr_log(L_DEBUG, "New xdg_shell toplevel title='%s' app_id='%s'",
+                xdg_surface->toplevel->title, xdg_surface->toplevel->app_id);
+        wlr_xdg_surface_ping(xdg_surface);
+        wlr_xdg_toplevel_set_maximized(xdg_surface, true);
+
+        struct sway_xdg_shell_view *xdg_shell_view =
+                calloc(1, sizeof(struct sway_xdg_shell_view));
+        if (!sway_assert(xdg_shell_view, "Failed to allocate view")) {
+                return;
+        }
+
+        view_init(&xdg_shell_view->view, SWAY_VIEW_XDG_SHELL, &view_impl);
+        xdg_shell_view->view.wlr_xdg_surface = xdg_surface;
+
+        // TODO:
+        // - Look up pid and open on appropriate workspace
+
+        xdg_shell_view->map.notify = handle_map;
+        wl_signal_add(&xdg_surface->events.map, &xdg_shell_view->map);
+
+        xdg_shell_view->unmap.notify = handle_unmap;
+        wl_signal_add(&xdg_surface->events.unmap, &xdg_shell_view->unmap);
+
+        xdg_shell_view->destroy.notify = handle_destroy;
+        wl_signal_add(&xdg_surface->events.destroy, &xdg_shell_view->destroy);
+
+        xdg_shell_view->request_fullscreen.notify = handle_request_fullscreen;
+        wl_signal_add(&xdg_surface->toplevel->events.request_fullscreen,
+                        &xdg_shell_view->request_fullscreen);
+}