Implement fullscreen.

12 files changed, 204 insertions, 8 deletions

diff --git a/include/sway/ipc-server.h b/include/sway/ipc-server.h
index c3389fe8..dd16a175 100644
--- a/include/sway/ipc-server.h
+++ b/include/sway/ipc-server.h
@@ -1,6 +1,7 @@
 #ifndef _SWAY_IPC_SERVER_H
 #define _SWAY_IPC_SERVER_H
 #include <sys/socket.h>
+#include "sway/config.h"
 #include "sway/tree/container.h"
 #include "ipc.h"
 
diff --git a/include/sway/tree/container.h b/include/sway/tree/container.h
index 2a8b8aba..22bd7240 100644
--- a/include/sway/tree/container.h
+++ b/include/sway/tree/container.h
@@ -72,9 +72,13 @@ struct sway_container {
         // For C_OUTPUT, this is the output position in layout coordinates
         // For other types, this is the position in output-local coordinates
         double x, y;
+        double saved_x, saved_y;
         // does not include borders or gaps.
         double width, height;
 
+        // For C_WORKSPACE only
+        struct sway_view *fullscreen;
+
         list_t *children;
 
         struct sway_container *parent;
diff --git a/include/sway/tree/view.h b/include/sway/tree/view.h
index b51c54b5..73d5f6c7 100644
--- a/include/sway/tree/view.h
+++ b/include/sway/tree/view.h
@@ -28,6 +28,7 @@ struct sway_view_impl {
         void (*configure)(struct sway_view *view, double ox, double oy, int width,
                 int height);
         void (*set_activated)(struct sway_view *view, bool activated);
+        void (*set_fullscreen)(struct sway_view *view, bool fullscreen);
         void (*for_each_surface)(struct sway_view *view,
                 wlr_surface_iterator_func_t iterator, void *user_data);
         void (*close)(struct sway_view *view);
@@ -41,6 +42,8 @@ struct sway_view {
         struct sway_container *swayc; // NULL for unmanaged views
         struct wlr_surface *surface; // NULL for unmapped views
         int width, height;
+        int saved_width, saved_height;
+        bool is_fullscreen;
 
         union {
                 struct wlr_xdg_surface_v6 *wlr_xdg_surface_v6;
@@ -63,6 +66,7 @@ struct sway_xdg_shell_v6_view {
         struct wl_listener request_move;
         struct wl_listener request_resize;
         struct wl_listener request_maximize;
+        struct wl_listener request_fullscreen;
         struct wl_listener new_popup;
         struct wl_listener map;
         struct wl_listener unmap;
@@ -79,6 +83,7 @@ struct sway_xwayland_view {
         struct wl_listener request_resize;
         struct wl_listener request_maximize;
         struct wl_listener request_configure;
+        struct wl_listener request_fullscreen;
         struct wl_listener map;
         struct wl_listener unmap;
         struct wl_listener destroy;
@@ -93,6 +98,7 @@ struct sway_xwayland_unmanaged {
         int lx, ly;
 
         struct wl_listener request_configure;
+        struct wl_listener request_fullscreen;
         struct wl_listener commit;
         struct wl_listener map;
         struct wl_listener unmap;
@@ -106,6 +112,7 @@ struct sway_wl_shell_view {
         struct wl_listener request_move;
         struct wl_listener request_resize;
         struct wl_listener request_maximize;
+        struct wl_listener request_fullscreen;
         struct wl_listener destroy;
 
         int pending_width, pending_height;
@@ -155,6 +162,8 @@ void view_configure(struct sway_view *view, double ox, double oy, int width,
 
 void view_set_activated(struct sway_view *view, bool activated);
 
+void view_set_fullscreen(struct sway_view *view, bool fullscreen);
+
 void view_close(struct sway_view *view);
 
 void view_damage(struct sway_view *view, bool whole);
diff --git a/sway/commands.c b/sway/commands.c
index 99f42524..8ddc033b 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -99,6 +99,7 @@ static struct cmd_handler handlers[] = {
         { "exec", cmd_exec },
         { "exec_always", cmd_exec_always },
         { "focus_follows_mouse", cmd_focus_follows_mouse },
+        { "fullscreen", cmd_fullscreen },
         { "include", cmd_include },
         { "input", cmd_input },
         { "mode", cmd_mode },
diff --git a/sway/commands/fullscreen.c b/sway/commands/fullscreen.c
new file mode 100644
index 00000000..3e256282
--- /dev/null
+++ b/sway/commands/fullscreen.c
@@ -0,0 +1,40 @@
+#include <wlr/types/wlr_wl_shell.h>
+#include "log.h"
+#include "sway/commands.h"
+#include "sway/config.h"
+#include "sway/tree/container.h"
+#include "sway/tree/view.h"
+#include "sway/tree/layout.h"
+
+// fullscreen toggle|enable|disable
+struct cmd_results *cmd_fullscreen(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if (config->reading) return cmd_results_new(CMD_FAILURE, "fullscreen", "Can't be used in config file.");
+        if (!config->active) return cmd_results_new(CMD_FAILURE, "fullscreen", "Can only be used when sway is running.");
+        if ((error = checkarg(argc, "fullscreen", EXPECTED_AT_LEAST, 1))) {
+                return error;
+        }
+        struct sway_container *container =
+                config->handler_context.current_container;
+        if (container->type != C_VIEW) {
+                return cmd_results_new(CMD_INVALID, "fullscreen",
+                                "Only views can fullscreen");
+        }
+        struct sway_view *view = container->sway_view;
+        bool wants_fullscreen;
+
+        if (strcmp(argv[0], "enable") == 0) {
+                wants_fullscreen = true;
+        } else if (strcmp(argv[0], "disable") == 0) {
+                wants_fullscreen = false;
+        } else if (strcmp(argv[0], "toggle") == 0) {
+                wants_fullscreen = !view->is_fullscreen;
+        } else {
+                return cmd_results_new(CMD_INVALID, "fullscreen",
+                                "Expected 'fullscreen <enable|disable|toggle>'");
+        }
+
+        view_set_fullscreen(view, wants_fullscreen);
+
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
diff --git a/sway/desktop/output.c b/sway/desktop/output.c
index 1b3143d0..b86f20e8 100644
--- a/sway/desktop/output.c
+++ b/sway/desktop/output.c
@@ -273,17 +273,25 @@ static void render_output(struct sway_output *output, struct timespec *when,
         float clear_color[] = {0.25f, 0.25f, 0.25f, 1.0f};
         wlr_renderer_clear(renderer, clear_color);
 
-        render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
-        render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
-
         struct sway_container *workspace = output_get_active_workspace(output);
-        render_container(output, workspace);
 
-        render_unmanaged(output, &root_container.sway_root->xwayland_unmanaged);
+        if (workspace->fullscreen) {
+                wlr_output_set_fullscreen_surface(wlr_output,
+                                workspace->fullscreen->surface);
+        } else {
+                wlr_output_set_fullscreen_surface(wlr_output, NULL);
+                render_layer(output,
+                                &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
+                render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
+
+                render_container(output, workspace);
 
-        // TODO: consider revising this when fullscreen windows are supported
-        render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
-        render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
+                render_unmanaged(output, &root_container.sway_root->xwayland_unmanaged);
+
+                render_layer(output, &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
+                render_layer(output,
+                                &output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
+        }
 
 renderer_end:
         if (root_container.sway_root->debug_tree) {
diff --git a/sway/desktop/xdg_shell_v6.c b/sway/desktop/xdg_shell_v6.c
index e4703040..133b60c3 100644
--- a/sway/desktop/xdg_shell_v6.c
+++ b/sway/desktop/xdg_shell_v6.c
@@ -118,6 +118,14 @@ static void set_activated(struct sway_view *view, bool activated) {
         }
 }
 
+static void set_fullscreen(struct sway_view *view, bool fullscreen) {
+        if (xdg_shell_v6_view_from_view(view) == NULL) {
+                return;
+        }
+        struct wlr_xdg_surface_v6 *surface = view->wlr_xdg_surface_v6;
+        wlr_xdg_toplevel_v6_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_v6_view_from_view(view) == NULL) {
@@ -146,6 +154,7 @@ static void destroy(struct sway_view *view) {
         wl_list_remove(&xdg_shell_v6_view->destroy.link);
         wl_list_remove(&xdg_shell_v6_view->map.link);
         wl_list_remove(&xdg_shell_v6_view->unmap.link);
+        wl_list_remove(&xdg_shell_v6_view->request_fullscreen.link);
         free(xdg_shell_v6_view);
 }
 
@@ -153,6 +162,7 @@ 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,
@@ -210,6 +220,18 @@ static void handle_destroy(struct wl_listener *listener, void *data) {
         view_destroy(&xdg_shell_v6_view->view);
 }
 
+static void handle_request_fullscreen(struct wl_listener *listener, void *data) {
+        struct sway_xdg_shell_v6_view *xdg_shell_v6_view =
+                wl_container_of(listener, xdg_shell_v6_view, request_fullscreen);
+        struct wlr_xdg_toplevel_v6_set_fullscreen_event *e = data;
+
+        if (xdg_shell_v6_view->view.wlr_xdg_surface_v6->role != WLR_XDG_SURFACE_V6_ROLE_TOPLEVEL) {
+                return;
+        }
+
+        view_set_fullscreen(&xdg_shell_v6_view->view, e->fullscreen);
+}
+
 void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
         struct sway_server *server = wl_container_of(listener, server,
                 xdg_shell_v6_surface);
@@ -246,4 +268,8 @@ void handle_xdg_shell_v6_surface(struct wl_listener *listener, void *data) {
 
         xdg_shell_v6_view->destroy.notify = handle_destroy;
         wl_signal_add(&xdg_surface->events.destroy, &xdg_shell_v6_view->destroy);
+
+        xdg_shell_v6_view->request_fullscreen.notify = handle_request_fullscreen;
+        wl_signal_add(&xdg_surface->toplevel->events.request_fullscreen,
+                        &xdg_shell_v6_view->request_fullscreen);
 }
diff --git a/sway/desktop/xwayland.c b/sway/desktop/xwayland.c
index 69166af0..716d8882 100644
--- a/sway/desktop/xwayland.c
+++ b/sway/desktop/xwayland.c
@@ -25,6 +25,15 @@ static void unmanaged_handle_request_configure(struct wl_listener *listener,
                 ev->width, ev->height);
 }
 
+static void unmanaged_handle_request_fullscreen(struct wl_listener *listener,
+                void *data) {
+        struct sway_xwayland_view *xwayland_view =
+                wl_container_of(listener, xwayland_view, request_fullscreen);
+        struct sway_view *view = &xwayland_view->view;
+        struct wlr_xwayland_surface *xsurface = view->wlr_xwayland_surface;
+        view_set_fullscreen(view, xsurface->fullscreen);
+}
+
 static void unmanaged_handle_commit(struct wl_listener *listener, void *data) {
         struct sway_xwayland_unmanaged *surface =
                 wl_container_of(listener, surface, commit);
@@ -106,6 +115,9 @@ static struct sway_xwayland_unmanaged *create_unmanaged(
         wl_signal_add(&xsurface->events.request_configure,
                 &surface->request_configure);
         surface->request_configure.notify = unmanaged_handle_request_configure;
+        wl_signal_add(&xsurface->events.request_fullscreen,
+                &surface->request_fullscreen);
+        surface->request_fullscreen.notify = unmanaged_handle_request_fullscreen;
         wl_signal_add(&xsurface->events.map, &surface->map);
         surface->map.notify = unmanaged_handle_map;
         wl_signal_add(&xsurface->events.unmap, &surface->unmap);
@@ -179,6 +191,14 @@ static void set_activated(struct sway_view *view, bool activated) {
         wlr_xwayland_surface_activate(surface, activated);
 }
 
+static void set_fullscreen(struct sway_view *view, bool fullscreen) {
+        if (xwayland_view_from_view(view) == NULL) {
+                return;
+        }
+        struct wlr_xwayland_surface *surface = view->wlr_xwayland_surface;
+        wlr_xwayland_surface_set_fullscreen(surface, fullscreen);
+}
+
 static void _close(struct sway_view *view) {
         if (xwayland_view_from_view(view) == NULL) {
                 return;
@@ -193,6 +213,7 @@ static void destroy(struct sway_view *view) {
         }
         wl_list_remove(&xwayland_view->destroy.link);
         wl_list_remove(&xwayland_view->request_configure.link);
+        wl_list_remove(&xwayland_view->request_fullscreen.link);
         wl_list_remove(&xwayland_view->map.link);
         wl_list_remove(&xwayland_view->unmap.link);
         free(xwayland_view);
@@ -202,6 +223,7 @@ static const struct sway_view_impl view_impl = {
         .get_prop = get_prop,
         .configure = configure,
         .set_activated = set_activated,
+        .set_fullscreen = set_fullscreen,
         .close = _close,
         .destroy = destroy,
 };
@@ -263,6 +285,14 @@ static void handle_request_configure(struct wl_listener *listener, void *data) {
                 ev->width, ev->height);
 }
 
+static void handle_request_fullscreen(struct wl_listener *listener, void *data) {
+        struct sway_xwayland_view *xwayland_view =
+                wl_container_of(listener, xwayland_view, request_fullscreen);
+        struct sway_view *view = &xwayland_view->view;
+        struct wlr_xwayland_surface *xsurface = view->wlr_xwayland_surface;
+        view_set_fullscreen(view, xsurface->fullscreen);
+}
+
 void handle_xwayland_surface(struct wl_listener *listener, void *data) {
         struct sway_server *server = wl_container_of(listener, server,
                 xwayland_surface);
@@ -298,6 +328,10 @@ void handle_xwayland_surface(struct wl_listener *listener, void *data) {
                 &xwayland_view->request_configure);
         xwayland_view->request_configure.notify = handle_request_configure;
 
+        wl_signal_add(&xsurface->events.request_fullscreen,
+                &xwayland_view->request_fullscreen);
+        xwayland_view->request_fullscreen.notify = handle_request_fullscreen;
+
         wl_signal_add(&xsurface->events.unmap, &xwayland_view->unmap);
         xwayland_view->unmap.notify = handle_unmap;
 
diff --git a/sway/input/seat.c b/sway/input/seat.c
index 09927a1a..f60c43b5 100644
--- a/sway/input/seat.c
+++ b/sway/input/seat.c
@@ -448,6 +448,20 @@ void seat_set_focus_warp(struct sway_seat *seat,
                 return;
         }
 
+        struct sway_container *last_workspace = last_focus;
+        if (last_workspace && last_workspace->type != C_WORKSPACE) {
+                last_workspace = container_parent(last_workspace, C_WORKSPACE);
+        }
+        struct sway_container *new_workspace = container;
+        if (new_workspace && new_workspace->type != C_WORKSPACE) {
+                new_workspace = container_parent(new_workspace, C_WORKSPACE);
+        }
+
+        if (last_workspace == new_workspace && last_workspace->fullscreen
+                        && !container->sway_view->is_fullscreen) {
+                return;
+        }
+
         struct sway_container *last_output = last_focus;
         if (last_output && last_output->type != C_OUTPUT) {
                 last_output = container_parent(last_output, C_OUTPUT);
diff --git a/sway/meson.build b/sway/meson.build
index 9e55e335..0bbb8da1 100644
--- a/sway/meson.build
+++ b/sway/meson.build
@@ -34,6 +34,7 @@ sway_sources = files(
         'commands/exec_always.c',
         'commands/focus.c',
         'commands/focus_follows_mouse.c',
+        'commands/fullscreen.c',
         'commands/kill.c',
         'commands/opacity.c',
         'commands/include.c',
diff --git a/sway/tree/layout.c b/sway/tree/layout.c
index 0b637822..ae6db454 100644
--- a/sway/tree/layout.c
+++ b/sway/tree/layout.c
@@ -137,6 +137,21 @@ void container_move_to(struct sway_container *container,
                         || container_has_anscestor(container, destination)) {
                 return;
         }
+
+        if (container->sway_view->is_fullscreen) {
+                struct sway_container *old_workspace = container;
+                if (old_workspace->type != C_WORKSPACE) {
+                        old_workspace = container_parent(old_workspace, C_WORKSPACE);
+                }
+                struct sway_container *new_workspace = destination;
+                if (new_workspace->type != C_WORKSPACE) {
+                        new_workspace = container_parent(new_workspace, C_WORKSPACE);
+                }
+                if (old_workspace != new_workspace) {
+                        view_set_fullscreen(container->sway_view, false);
+                }
+        }
+
         struct sway_container *old_parent = container_remove_child(container);
         container->width = container->height = 0;
         struct sway_container *new_parent;
@@ -557,6 +572,9 @@ void arrange_windows(struct sway_container *container,
                 return;
         case C_WORKSPACE:
                 {
+                        if (container->fullscreen) {
+                                return;
+                        }
                         struct sway_container *output =
                                 container_parent(container, C_OUTPUT);
                         struct wlr_box *area = &output->sway_output->usable_area;
diff --git a/sway/tree/view.c b/sway/tree/view.c
index 99b44720..b958233b 100644
--- a/sway/tree/view.c
+++ b/sway/tree/view.c
@@ -2,6 +2,7 @@
 #include <wayland-server.h>
 #include <wlr/types/wlr_output_layout.h>
 #include "log.h"
+#include "sway/ipc-server.h"
 #include "sway/output.h"
 #include "sway/tree/container.h"
 #include "sway/tree/layout.h"
@@ -73,7 +74,46 @@ void view_set_activated(struct sway_view *view, bool activated) {
         }
 }
 
+void view_set_fullscreen(struct sway_view *view, bool fullscreen) {
+        if (view->is_fullscreen == fullscreen) {
+                return;
+        }
+
+        struct sway_container *container = container_parent(view->swayc, C_OUTPUT);
+        struct sway_output *output = container->sway_output;
+        struct sway_container *workspace = container_parent(view->swayc, C_WORKSPACE);
+
+        if (view->impl->set_fullscreen) {
+                view->impl->set_fullscreen(view, fullscreen);
+        }
+
+        if (fullscreen) {
+                view->swayc->saved_x = view->swayc->x;
+                view->swayc->saved_y = view->swayc->y;
+                view->saved_width = view->width;
+                view->saved_height = view->height;
+                view_configure(view, 0, 0, output->wlr_output->width, output->wlr_output->height);
+                workspace->fullscreen = view;
+        } else {
+                view_configure(view, view->swayc->saved_x, view->swayc->saved_y,
+                                view->saved_width, view->saved_height);
+                workspace->fullscreen = NULL;
+        }
+
+        view->is_fullscreen = fullscreen;
+        output_damage_whole(output);
+
+        arrange_windows(workspace, -1, -1);
+
+        ipc_event_window(view->swayc, "fullscreen_mode");
+}
+
 void view_close(struct sway_view *view) {
+        if (view->is_fullscreen) {
+                struct sway_container *ws = container_parent(view->swayc, C_WORKSPACE);
+                ws->fullscreen = NULL;
+        }
+
         if (view->impl->close) {
                 view->impl->close(view);
         }