16 files changed, 192 insertions, 2 deletions

diff --git a/include/sway/commands.h b/include/sway/commands.h
index 21b8b87a..48228a98 100644
--- a/include/sway/commands.h
+++ b/include/sway/commands.h
@@ -154,6 +154,7 @@ sway_cmd cmd_new_window;
 sway_cmd cmd_no_focus;
 sway_cmd cmd_output;
 sway_cmd cmd_permit;
+sway_cmd cmd_popup_during_fullscreen;
 sway_cmd cmd_reject;
 sway_cmd cmd_reload;
 sway_cmd cmd_rename;
diff --git a/include/sway/config.h b/include/sway/config.h
index 0e51fbfb..00b5f25b 100644
--- a/include/sway/config.h
+++ b/include/sway/config.h
@@ -256,6 +256,12 @@ enum edge_border_types {
         E_SMART_NO_GAPS, /**< hide both if one window and gaps to edge is zero */
 };
 
+enum sway_popup_during_fullscreen {
+        POPUP_SMART,
+        POPUP_IGNORE,
+        POPUP_LEAVE,
+};
+
 enum command_context {
         CONTEXT_CONFIG = 1,
         CONTEXT_BINDING = 2,
@@ -355,6 +361,7 @@ struct sway_config {
         bool pango_markup;
         size_t urgent_timeout;
         enum sway_fowa focus_on_window_activation;
+        enum sway_popup_during_fullscreen popup_during_fullscreen;
 
         // Flags
         bool focus_follows_mouse;
diff --git a/include/sway/tree/view.h b/include/sway/tree/view.h
index 028be536..eb1e98e1 100644
--- a/include/sway/tree/view.h
+++ b/include/sway/tree/view.h
@@ -49,6 +49,8 @@ struct sway_view_impl {
                 wlr_surface_iterator_func_t iterator, void *user_data);
         void (*for_each_popup)(struct sway_view *view,
                 wlr_surface_iterator_func_t iterator, void *user_data);
+        bool (*is_transient_for)(struct sway_view *child,
+                        struct sway_view *ancestor);
         void (*close)(struct sway_view *view);
         void (*close_popups)(struct sway_view *view);
         void (*destroy)(struct sway_view *view);
@@ -396,4 +398,6 @@ void view_remove_saved_buffer(struct sway_view *view);
 
 void view_save_buffer(struct sway_view *view);
 
+bool view_is_transient_for(struct sway_view *child, struct sway_view *ancestor);
+
 #endif
diff --git a/sway/commands.c b/sway/commands.c
index 780cd7d6..8db1df01 100644
--- a/sway/commands.c
+++ b/sway/commands.c
@@ -109,6 +109,7 @@ static struct cmd_handler handlers[] = {
         { "new_window", cmd_default_border },
         { "no_focus", cmd_no_focus },
         { "output", cmd_output },
+        { "popup_during_fullscreen", cmd_popup_during_fullscreen },
         { "raise_floating", cmd_raise_floating },
         { "seat", cmd_seat },
         { "set", cmd_set },
diff --git a/sway/commands/popup_during_fullscreen.c b/sway/commands/popup_during_fullscreen.c
new file mode 100644
index 00000000..da1904b6
--- /dev/null
+++ b/sway/commands/popup_during_fullscreen.c
@@ -0,0 +1,25 @@
+#include <strings.h>
+#include "sway/commands.h"
+#include "sway/config.h"
+
+struct cmd_results *cmd_popup_during_fullscreen(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if ((error = checkarg(argc, "popup_during_fullscreen",
+                                        EXPECTED_EQUAL_TO, 1))) {
+                return error;
+        }
+
+        if (strcasecmp(argv[0], "smart") == 0) {
+                config->popup_during_fullscreen = POPUP_SMART;
+        } else if (strcasecmp(argv[0], "ignore") == 0) {
+                config->popup_during_fullscreen = POPUP_IGNORE;
+        } else if (strcasecmp(argv[0], "leave_fullscreen") == 0) {
+                config->popup_during_fullscreen = POPUP_LEAVE;
+        } else {
+                return cmd_results_new(CMD_INVALID, "popup_during_fullscreen",
+                                "Expected "
+                                "'popup_during_fullscreen smart|ignore|leave_fullscreen'");
+        }
+
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}
diff --git a/sway/config.c b/sway/config.c
index 8f8ed438..070b15c8 100644
--- a/sway/config.c
+++ b/sway/config.c
@@ -212,6 +212,7 @@ static void config_defaults(struct sway_config *config) {
         if (!(config->font = strdup("monospace 10"))) goto cleanup;
         config->font_height = 17; // height of monospace 10
         config->urgent_timeout = 500;
+        config->popup_during_fullscreen = POPUP_SMART;
 
         // floating view
         config->floating_maximum_width = 0;
diff --git a/sway/desktop/output.c b/sway/desktop/output.c
index cfb5a710..0bcdcac1 100644
--- a/sway/desktop/output.c
+++ b/sway/desktop/output.c
@@ -329,6 +329,17 @@ static void send_frame_done(struct sway_output *output, struct timespec *when) {
                                 workspace->current.fullscreen, &data);
                 container_for_each_child(workspace->current.fullscreen,
                                 send_frame_done_container_iterator, &data);
+                if (config->popup_during_fullscreen == POPUP_SMART &&
+                                workspace->current.fullscreen->view) {
+                        for (int i = 0; i < workspace->current.floating->length; ++i) {
+                                struct sway_container *floater =
+                                        workspace->current.floating->items[i];
+                                if (floater->view && view_is_transient_for(floater->view,
+                                                        workspace->current.fullscreen->view)) {
+                                        send_frame_done_container_iterator(floater, &data);
+                                }
+                        }
+                }
 #ifdef HAVE_XWAYLAND
                 send_frame_done_unmanaged(output, &root->xwayland_unmanaged, when);
 #endif
diff --git a/sway/desktop/render.c b/sway/desktop/render.c
index c8b08a58..c2a0d29f 100644
--- a/sway/desktop/render.c
+++ b/sway/desktop/render.c
@@ -961,6 +961,17 @@ void output_render(struct sway_output *output, struct timespec *when,
                         render_container(output, damage, fullscreen_con,
                                         fullscreen_con->current.focused);
                 }
+
+                if (config->popup_during_fullscreen == POPUP_SMART &&
+                                fullscreen_con->view) {
+                        for (int i = 0; i < workspace->floating->length; ++i) {
+                                struct sway_container *floater = workspace->floating->items[i];
+                                if (floater->view && view_is_transient_for(
+                                                        floater->view, fullscreen_con->view)) {
+                                        render_floating_container(output, damage, floater);
+                                }
+                        }
+                }
 #ifdef HAVE_XWAYLAND
                 render_unmanaged(output, damage, &root->xwayland_unmanaged);
 #endif
diff --git a/sway/desktop/xdg_shell.c b/sway/desktop/xdg_shell.c
index a8b527a7..54831679 100644
--- a/sway/desktop/xdg_shell.c
+++ b/sway/desktop/xdg_shell.c
@@ -192,6 +192,21 @@ static void for_each_popup(struct sway_view *view,
         wlr_xdg_surface_for_each_popup(view->wlr_xdg_surface, iterator, user_data);
 }
 
+static bool is_transient_for(struct sway_view *child,
+                struct sway_view *ancestor) {
+        if (xdg_shell_view_from_view(child) == NULL) {
+                return false;
+        }
+        struct wlr_xdg_surface *surface = child->wlr_xdg_surface;
+        while (surface) {
+                if (surface->toplevel->parent == ancestor->wlr_xdg_surface) {
+                        return true;
+                }
+                surface = surface->toplevel->parent;
+        }
+        return false;
+}
+
 static void _close(struct sway_view *view) {
         if (xdg_shell_view_from_view(view) == NULL) {
                 return;
@@ -233,6 +248,7 @@ static const struct sway_view_impl view_impl = {
         .wants_floating = wants_floating,
         .for_each_surface = for_each_surface,
         .for_each_popup = for_each_popup,
+        .is_transient_for = is_transient_for,
         .close = _close,
         .close_popups = close_popups,
         .destroy = destroy,
@@ -385,6 +401,18 @@ static void handle_map(struct wl_listener *listener, void *data) {
                 view_update_csd_from_client(view, csd);
         }
 
+        if (config->popup_during_fullscreen == POPUP_LEAVE &&
+                        view->container->workspace &&
+                        view->container->workspace->fullscreen &&
+                        xdg_surface->toplevel->parent) {
+                struct wlr_xdg_surface *psurface = xdg_surface->toplevel->parent;
+                struct sway_xdg_shell_view *parent = psurface->data;
+                struct sway_view *sway_view = &parent->view;
+                if (sway_view->container && sway_view->container->is_fullscreen) {
+                        container_set_fullscreen(sway_view->container, false);
+                }
+        }
+
         if (xdg_surface->toplevel->client_pending.fullscreen) {
                 container_set_fullscreen(view->container, true);
                 arrange_workspace(view->container->workspace);
@@ -395,6 +423,7 @@ static void handle_map(struct wl_listener *listener, void *data) {
                         arrange_workspace(view->container->workspace);
                 }
         }
+
         transaction_commit_dirty();
 
         xdg_shell_view->commit.notify = handle_commit;
diff --git a/sway/desktop/xdg_shell_v6.c b/sway/desktop/xdg_shell_v6.c
index a7838c0f..dacfca02 100644
--- a/sway/desktop/xdg_shell_v6.c
+++ b/sway/desktop/xdg_shell_v6.c
@@ -189,6 +189,21 @@ static void for_each_popup(struct sway_view *view,
                 user_data);
 }
 
+static bool is_transient_for(struct sway_view *child,
+                struct sway_view *ancestor) {
+        if (xdg_shell_v6_view_from_view(child) == NULL) {
+                return false;
+        }
+        struct wlr_xdg_surface_v6 *surface = child->wlr_xdg_surface_v6;
+        while (surface) {
+                if (surface->toplevel->parent == ancestor->wlr_xdg_surface_v6) {
+                        return true;
+                }
+                surface = surface->toplevel->parent;
+        }
+        return false;
+}
+
 static void _close(struct sway_view *view) {
         if (xdg_shell_v6_view_from_view(view) == NULL) {
                 return;
@@ -230,6 +245,7 @@ static const struct sway_view_impl view_impl = {
         .wants_floating = wants_floating,
         .for_each_surface = for_each_surface,
         .for_each_popup = for_each_popup,
+        .is_transient_for = is_transient_for,
         .close = _close,
         .close_popups = close_popups,
         .destroy = destroy,
@@ -380,6 +396,18 @@ static void handle_map(struct wl_listener *listener, void *data) {
                         WLR_SERVER_DECORATION_MANAGER_MODE_CLIENT;
         view_update_csd_from_client(view, csd);
 
+        if (config->popup_during_fullscreen == POPUP_LEAVE &&
+                        view->container->workspace &&
+                        view->container->workspace->fullscreen &&
+                        xdg_surface->toplevel->parent) {
+                struct wlr_xdg_surface_v6 *psurface = xdg_surface->toplevel->parent;
+                struct sway_xdg_shell_v6_view *parent = psurface->data;
+                struct sway_view *sway_view = &parent->view;
+                if (sway_view->container && sway_view->container->is_fullscreen) {
+                        container_set_fullscreen(sway_view->container, false);
+                }
+        }
+
         if (xdg_surface->toplevel->client_pending.fullscreen) {
                 container_set_fullscreen(view->container, true);
                 arrange_workspace(view->container->workspace);
diff --git a/sway/desktop/xwayland.c b/sway/desktop/xwayland.c
index 4c710f7e..80489f93 100644
--- a/sway/desktop/xwayland.c
+++ b/sway/desktop/xwayland.c
@@ -15,6 +15,7 @@
 #include "sway/tree/arrange.h"
 #include "sway/tree/container.h"
 #include "sway/tree/view.h"
+#include "sway/tree/workspace.h"
 
 static const char *atom_map[ATOM_LAST] = {
         "_NET_WM_WINDOW_TYPE_NORMAL",
@@ -253,6 +254,21 @@ static void handle_set_decorations(struct wl_listener *listener, void *data) {
         view_update_csd_from_client(view, csd);
 }
 
+static bool is_transient_for(struct sway_view *child,
+                struct sway_view *ancestor) {
+        if (xwayland_view_from_view(child) == NULL) {
+                return false;
+        }
+        struct wlr_xwayland_surface *surface = child->wlr_xwayland_surface;
+        while (surface) {
+                if (surface->parent == ancestor->wlr_xwayland_surface) {
+                        return true;
+                }
+                surface = surface->parent;
+        }
+        return false;
+}
+
 static void _close(struct sway_view *view) {
         if (xwayland_view_from_view(view) == NULL) {
                 return;
@@ -276,6 +292,7 @@ static const struct sway_view_impl view_impl = {
         .set_tiled = set_tiled,
         .set_fullscreen = set_fullscreen,
         .wants_floating = wants_floating,
+        .is_transient_for = is_transient_for,
         .close = _close,
         .destroy = destroy,
 };
@@ -390,6 +407,18 @@ static void handle_map(struct wl_listener *listener, void *data) {
         // Put it back into the tree
         view_map(view, xsurface->surface);
 
+        if (config->popup_during_fullscreen == POPUP_LEAVE &&
+                        view->container->workspace &&
+                        view->container->workspace->fullscreen &&
+                        xsurface->parent) {
+                struct wlr_xwayland_surface *psurface = xsurface->parent;
+                struct sway_xwayland_view *parent = psurface->data;
+                struct sway_view *sway_view = &parent->view;
+                if (sway_view->container && sway_view->container->is_fullscreen) {
+                        container_set_fullscreen(sway_view->container, false);
+                }
+        }
+
         if (xsurface->fullscreen) {
                 container_set_fullscreen(view->container, true);
                 arrange_workspace(view->container->workspace);
diff --git a/sway/input/cursor.c b/sway/input/cursor.c
index 331c6c7e..08eeb812 100644
--- a/sway/input/cursor.c
+++ b/sway/input/cursor.c
@@ -98,6 +98,22 @@ static struct sway_node *node_at_coords(
                 return NULL;
         }
         if (ws->fullscreen) {
+                // Try transient containers
+                if (config->popup_during_fullscreen == POPUP_SMART &&
+                                ws->fullscreen->view) {
+                        for (int i = 0; i < ws->floating->length; ++i) {
+                                struct sway_container *floater = ws->floating->items[i];
+                                if (floater->view && view_is_transient_for(
+                                                        floater->view, ws->fullscreen->view)) {
+                                        struct sway_container *con = tiling_container_at(
+                                                        &floater->node, lx, ly, surface, sx, sy);
+                                        if (con) {
+                                                return &con->node;
+                                        }
+                                }
+                        }
+                }
+                // Try fullscreen container
                 struct sway_container *con =
                         tiling_container_at(&ws->fullscreen->node, lx, ly, surface, sx, sy);
                 if (con) {
diff --git a/sway/input/seat.c b/sway/input/seat.c
index f5cb2f9e..690b59e6 100644
--- a/sway/input/seat.c
+++ b/sway/input/seat.c
@@ -655,7 +655,14 @@ void seat_set_focus_warp(struct sway_seat *seat, struct sway_node *node,
         // Deny setting focus to a view which is hidden by a fullscreen container
         if (new_workspace && new_workspace->fullscreen && container &&
                         !container_is_fullscreen_or_child(container)) {
-                return;
+                // Unless it's a transient container
+                bool is_transient = new_workspace->fullscreen->view &&
+                        config->popup_during_fullscreen == POPUP_SMART &&
+                        container->view && view_is_transient_for(
+                                        container->view, new_workspace->fullscreen->view);
+                if (!is_transient) {
+                        return;
+                }
         }
 
         struct sway_output *last_output = last_workspace ?
diff --git a/sway/meson.build b/sway/meson.build
index 8ab28869..c7fc9697 100644
--- a/sway/meson.build
+++ b/sway/meson.build
@@ -70,6 +70,7 @@ sway_sources = files(
         'commands/no_focus.c',
         'commands/nop.c',
         'commands/output.c',
+        'commands/popup_during_fullscreen.c',
         'commands/reload.c',
         'commands/rename.c',
         'commands/resize.c',
diff --git a/sway/sway.5.scd b/sway/sway.5.scd
index 3fda6cef..387edf54 100644
--- a/sway/sway.5.scd
+++ b/sway/sway.5.scd
@@ -549,6 +549,12 @@ You may combine output commands into one, like so:
 You can get a list of output names with *swaymsg -t get\_outputs*. You may also
 match any output by using the output name "\*".
 
+*popup\_during\_fullscreen* smart|ignore|leave\_fullscreen
+        Determines what to do when a fullscreen view opens a dialog.
+        If _smart_ (the default), the dialog will be displayed. If _ignore_, the
+        dialog will not be rendered. If _leave\_fullscreen_, the view will exit
+        fullscreen mode and the dialog will be rendered.
+
 *set* $<name> <value>
         Sets variable $_name_ to _value_. You can use the new variable in the
         arguments of future commands. When the variable is used, it can be escaped
diff --git a/sway/tree/view.c b/sway/tree/view.c
index 73ce55ac..edf771c1 100644
--- a/sway/tree/view.c
+++ b/sway/tree/view.c
@@ -1042,7 +1042,14 @@ bool view_is_visible(struct sway_view *view) {
         // Check view isn't hidden by another fullscreen view
         if (workspace->fullscreen &&
                         !container_is_fullscreen_or_child(view->container)) {
-                return false;
+                // However, if we're transient for the fullscreen view and we allow
+                // "popups" during fullscreen then it might be visible
+                bool is_transient = config->popup_during_fullscreen == POPUP_SMART &&
+                                workspace->fullscreen->view &&
+                                view_is_transient_for(view, workspace->fullscreen->view);
+                if (!is_transient) {
+                        return false;
+                }
         }
         return true;
 }
@@ -1095,3 +1102,9 @@ void view_save_buffer(struct sway_view *view) {
                 view->saved_buffer_height = view->surface->current.height;
         }
 }
+
+bool view_is_transient_for(struct sway_view *child,
+                struct sway_view *ancestor) {
+        return child->impl->is_transient_for &&
+                child->impl->is_transient_for(child, ancestor);
+}