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);
+}