#define _POSIX_C_SOURCE 200112L #include #include #include #include "layer.h" #include "node.h" #include "output.h" #include "seat.h" static void popup_handle_new_popup(struct wl_listener *listener, void *data); static struct diyac_popup *create_layer_popup(struct wlr_xdg_popup *wlr_popup, struct wlr_scene_tree *parent); static void process_keyboard_interactivity(struct diyac_layer_surface *layer) { struct wlr_layer_surface_v1 *layer_surface = layer->scene_layer_surface->layer_surface; struct diyac_seat *seat = &layer->server->seat; if (layer_surface->current.keyboard_interactive && layer_surface->current.layer >= ZWLR_LAYER_SHELL_V1_LAYER_TOP) { /* * Give keyboard focus to surface if * - keyboard-interactivity is 'exclusive' or 'on-demand'; and * - surface is in top/overlay layers; and * - currently focused layer has a lower precedence * * In other words, when dealing with two surfaces with * exclusive/on-demand keyboard-interactivity (firstly the * currently focused 'focused_layer' and secondly the * 'layer_surface' for which we're just responding to a * map/commit event), the following logic applies: * * | focused_layer | layer_surface | who gets keyboard focus | * |---------------|---------------|-------------------------| * | overlay | top | focused_layer | * | overlay | overlay | layer_surface | * | top | top | layer_surface | * | top | overlay | layer_surface | */ if (!seat->focused_layer || seat->focused_layer->current.layer <= layer_surface->current.layer) { diyac_seat_focus_layer(seat, layer_surface); } } else if (seat->focused_layer && !seat->focused_layer->current.keyboard_interactive) { /* * Clear focus if keyboard-interactivity has been set to * ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_NONE */ diyac_seat_focus_layer(seat, NULL); } } static void layer_surface_commit(struct wl_listener *listener, void *data) { struct diyac_layer_surface *layer = wl_container_of(listener, layer, surface_commit); struct wlr_layer_surface_v1 *layer_surface = layer->scene_layer_surface->layer_surface; struct wlr_output *wlr_output = layer->scene_layer_surface->layer_surface->output; if (!wlr_output) { return; } uint32_t committed = layer_surface->current.committed; struct diyac_output *output = (struct diyac_output *)wlr_output->data; /* Process layer change */ if (committed & WLR_LAYER_SURFACE_V1_STATE_LAYER) { wlr_scene_node_reparent(&layer->scene_layer_surface->tree->node, output->layer_tree[layer_surface->current.layer]); } /* Process keyboard-interactivity change */ if (committed & WLR_LAYER_SURFACE_V1_STATE_KEYBOARD_INTERACTIVITY) { wlr_log(WLR_INFO, "Process keyboard"); process_keyboard_interactivity(layer); } if (committed || layer->mapped != layer_surface->surface->mapped) { layer->mapped = layer_surface->surface->mapped; diyac_output_update_usable_area(output); /* * Update cursor focus here to ensure we * enter a new/moved/resized layer surface. */ // cursor_update_focus(layer->server); wlr_log(WLR_INFO, "update focus"); } } static void layer_surface_unmap(struct wl_listener *listener, void *data) { struct diyac_layer_surface *layer = wl_container_of(listener, layer, unmap); struct wlr_layer_surface_v1 *layer_surface = layer->scene_layer_surface->layer_surface; if (layer_surface->output) { diyac_output_update_usable_area(layer_surface->output->data); } struct diyac_seat *seat = &layer->server->seat; if (seat->focused_layer == layer_surface) { diyac_seat_focus_layer(seat, NULL); } } static void layer_surface_map(struct wl_listener *listener, void *data) { struct diyac_layer_surface *layer = wl_container_of(listener, layer, map); struct wlr_output *wlr_output = layer->scene_layer_surface->layer_surface->output; if (wlr_output) { diyac_output_update_usable_area(wlr_output->data); } /* * Since moving to the wlroots scene-graph API, there is no need to * call wlr_surface_send_enter() from here since that will be done * automatically based on the position of the surface and outputs in * the scene. See wlr_scene_surface_create() documentation. */ process_keyboard_interactivity(layer); } static void layer_surface_node_destroy(struct wl_listener *listener, void *data) { struct diyac_layer_surface *layer = wl_container_of(listener, layer, node_destroy); /* * TODO: Determine if this layer is being used by an exclusive client. * If it is, try and find another layer owned by this client to pass * focus to. */ wl_list_remove(&layer->map.link); wl_list_remove(&layer->unmap.link); wl_list_remove(&layer->surface_commit.link); wl_list_remove(&layer->new_popup.link); wl_list_remove(&layer->output_destroy.link); wl_list_remove(&layer->node_destroy.link); free(layer); } static void layer_surface_output_destroy(struct wl_listener *listener, void *data) { struct diyac_layer_surface *layer = wl_container_of(listener, layer, output_destroy); layer->scene_layer_surface->layer_surface->output = NULL; wlr_layer_surface_v1_destroy(layer->scene_layer_surface->layer_surface); } static void popup_handle_destroy(struct wl_listener *listener, void *data) { struct diyac_popup *popup = wl_container_of(listener, popup, destroy); wl_list_remove(&popup->destroy.link); wl_list_remove(&popup->new_popup.link); /* Usually already removed unless there was no commit at all */ if (popup->commit.notify) { wl_list_remove(&popup->commit.link); } free(popup); } static void popup_handle_commit(struct wl_listener *listener, void *data) { struct diyac_popup *popup = wl_container_of(listener, popup, commit); if (popup->wlr_popup->base->initial_commit) { wlr_xdg_popup_unconstrain_from_box(popup->wlr_popup, &popup->output_toplevel_sx_box); /* Prevent getting called over and over again */ wl_list_remove(&popup->commit.link); popup->commit.notify = NULL; } } /* This popup's parent is a layer popup */ static void popup_handle_new_popup(struct wl_listener *listener, void *data) { struct diyac_popup *popup = wl_container_of(listener, popup, new_popup); struct wlr_xdg_popup *wlr_popup = data; struct diyac_popup *new_popup = create_layer_popup(wlr_popup, popup->scene_tree); new_popup->output_toplevel_sx_box = popup->output_toplevel_sx_box; } static struct diyac_popup *create_layer_popup(struct wlr_xdg_popup *wlr_popup, struct wlr_scene_tree *parent) { wlr_log(WLR_INFO, "create_layer_popup: popup create"); struct diyac_popup *popup = calloc(1, sizeof(*popup)); popup->wlr_popup = wlr_popup; popup->scene_tree = wlr_scene_xdg_surface_create(parent, wlr_popup->base); if (!popup->scene_tree) { free(popup); return NULL; } diyac_node_descriptor_create(&popup->scene_tree->node, DIYAC_NODE_LAYER_POPUP, popup); popup->destroy.notify = popup_handle_destroy; wl_signal_add(&wlr_popup->base->events.destroy, &popup->destroy); popup->new_popup.notify = popup_handle_new_popup; wl_signal_add(&wlr_popup->base->events.new_popup, &popup->new_popup); popup->commit.notify = popup_handle_commit; wl_signal_add(&wlr_popup->base->surface->events.commit, &popup->commit); return popup; } /* * We move popups from the bottom to the top layer so that they are * rendered above views. */ static void move_popup_to_top_layer(struct diyac_layer_surface *toplevel, struct diyac_popup *popup) { wlr_log(WLR_INFO, "move_popup_to_top_layer: popup notif"); struct diyac_server *server = toplevel->server; struct wlr_output *wlr_output = toplevel->scene_layer_surface->layer_surface->output; struct diyac_output *output = (struct diyac_output *)wlr_output->data; struct wlr_box box = {0}; wlr_output_layout_get_box(server->output_layout, wlr_output, &box); int lx = toplevel->scene_layer_surface->tree->node.x + box.x; int ly = toplevel->scene_layer_surface->tree->node.y + box.y; struct wlr_scene_node *node = &popup->scene_tree->node; wlr_scene_node_reparent(node, output->scenes.popup); /* FIXME: verify the whole tree should be repositioned */ wlr_scene_node_set_position(&output->scenes.popup->node, lx, ly); } /* This popup's parent is a layer popup */ static void layer_popup_new(struct wl_listener *listener, void *data) { wlr_log(WLR_INFO, "layer_popup_new: popup notif"); struct diyac_layer_surface *toplevel = wl_container_of(listener, toplevel, new_popup); struct wlr_xdg_popup *wlr_popup = data; struct diyac_server *server = toplevel->server; struct wlr_scene_layer_surface_v1 *surface = toplevel->scene_layer_surface; struct diyac_output *output = surface->layer_surface->output->data; int lx, ly; wlr_scene_node_coords(&surface->tree->node, &lx, &ly); struct wlr_box output_box = {0}; wlr_output_layout_get_box(server->output_layout, output->wlr_output, &output_box); /* * Output geometry expressed in the coordinate system of the toplevel * parent of popup. We store this struct the lab_layer_popup struct * to make it easier to unconstrain children when we move popups from * the bottom to the top layer. */ struct wlr_box output_toplevel_sx_box = { .x = output_box.x - lx, .y = output_box.y - ly, .width = output_box.width, .height = output_box.height, }; struct diyac_popup *popup = create_layer_popup(wlr_popup, surface->tree); popup->output_toplevel_sx_box = output_toplevel_sx_box; if (surface->layer_surface->current.layer <= ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM) { move_popup_to_top_layer(toplevel, popup); } } void diyac_new_layer_surface(struct wl_listener *listener, void *data) { struct diyac_server *server = wl_container_of(listener, server, new_layer_surface); struct wlr_layer_surface_v1 *layer_surface = data; if (!layer_surface->output) { struct wlr_output *output = wlr_output_layout_output_at( server->output_layout, server->seat.cursor->x, server->seat.cursor->y); if (!output) { wlr_log(WLR_INFO, "No output available to assign layer surface"); wlr_layer_surface_v1_destroy(layer_surface); return; } layer_surface->output = output; } struct diyac_layer_surface *surface = calloc(1, sizeof(*surface)); struct diyac_output *output = layer_surface->output->data; struct wlr_scene_tree *selected_layer = output->layer_tree[layer_surface->current.layer]; surface->scene_layer_surface = wlr_scene_layer_surface_v1_create( selected_layer, layer_surface); if (!surface->scene_layer_surface) { wlr_layer_surface_v1_destroy(layer_surface); wlr_log(WLR_ERROR, "could not create layer surface"); return; } diyac_node_descriptor_create(&surface->scene_layer_surface->tree->node, DIYAC_NODE_LAYER_SURFACE, surface); surface->server = server; surface->scene_layer_surface->layer_surface = layer_surface; surface->surface_commit.notify = layer_surface_commit; wl_signal_add(&layer_surface->surface->events.commit, &surface->surface_commit); surface->map.notify = layer_surface_map; wl_signal_add(&layer_surface->surface->events.map, &surface->map); surface->unmap.notify = layer_surface_unmap; wl_signal_add(&layer_surface->surface->events.unmap, &surface->unmap); surface->new_popup.notify = layer_popup_new; wl_signal_add(&layer_surface->events.new_popup, &surface->new_popup); surface->output_destroy.notify = layer_surface_output_destroy; wl_signal_add(&layer_surface->output->events.destroy, &surface->output_destroy); surface->node_destroy.notify = layer_surface_node_destroy; wl_signal_add(&surface->scene_layer_surface->tree->node.events.destroy, &surface->node_destroy); /* * Temporarily set the layer's current state to pending so that * it can easily be arranged. */ struct wlr_layer_surface_v1_state old_state = layer_surface->current; layer_surface->current = layer_surface->pending; diyac_output_update_usable_area(output); layer_surface->current = old_state; } static void arrange_one_layer(const struct wlr_box *full_area, struct wlr_box *usable_area, struct wlr_scene_tree *tree, bool exclusive) { struct wlr_scene_node *node; wl_list_for_each(node, &tree->children, link) { struct diyac_layer_surface *surface = diyac_layer_surface_from_node(node); struct wlr_scene_layer_surface_v1 *scene = surface->scene_layer_surface; if (!!scene->layer_surface->current.exclusive_zone != exclusive) { continue; } wlr_scene_layer_surface_v1_configure(scene, full_area, usable_area); } } /* * To ensure outputs/views are left in a consistent state, this * function should be called ONLY from output_update_usable_area() * or output_update_all_usable_areas(). */ void diyac_layers_arrange(struct diyac_output *output) { assert(output); struct wlr_box full_area = {0}; wlr_output_effective_resolution(output->wlr_output, &full_area.width, &full_area.height); struct wlr_box usable_area = full_area; struct diyac_server *server = output->server; struct wlr_scene_output *scene_output = wlr_scene_get_scene_output(server->scene, output->wlr_output); if (!scene_output) { wlr_log(WLR_DEBUG, "no wlr_scene_output"); return; } for (int i = LAYER_TREE_SZ - 1; i >= 0; i--) { struct wlr_scene_tree *layer = output->layer_tree[i]; /* * Process exclusive-zone clients before non-exclusive-zone * clients, so that the latter give way to the former regardless * of the order in which they were launched. * * Also start calculating the usable_area for exclusive-zone * clients from the Overlay layer down to the Background layer * to ensure that higher layers have a higher preference for * placement. * * The 'exclusive' boolean also matches -1 which means that * the layershell client wants to use the full screen rather * than the usable area. */ arrange_one_layer(&full_area, &usable_area, layer, /* exclusive */ true); } for (size_t i = 0; i < LAYER_TREE_SZ; i++) { struct wlr_scene_tree *layer = output->layer_tree[i]; arrange_one_layer(&full_area, &usable_area, layer, /* exclusive */ false); /* Set node position to account for output layout change */ wlr_scene_node_set_position(&layer->node, scene_output->x, scene_output->y); } output->usable_area = usable_area; }