view: decouple always-on-top windows from the omnipresent state

Before this commit, always-on-{top,bottom} windows were always visible
on all workspaces (omnipresent) because the they were not in
per-workspace trees like normal windows.

This commit fixes this by removing per-workspace trees and instead
showing/hiding views individually based on view->workspace.
This commit is contained in:
tokyo4j 2025-12-01 14:56:04 +09:00
parent 55a256f2fa
commit cf401a6394
8 changed files with 25 additions and 72 deletions

View file

@ -62,10 +62,7 @@ enum lab_view_criteria {
/* No filter -> all focusable views */
LAB_VIEW_CRITERIA_NONE = 0,
/*
* Includes always-on-top views, e.g.
* what is visible on the current workspace
*/
/* Includes omnipresent (visible on all desktops) views */
LAB_VIEW_CRITERIA_CURRENT_WORKSPACE = 1 << 0,
/* Positive criteria */

View file

@ -8,14 +8,12 @@
struct seat;
struct server;
struct wlr_scene_tree;
struct workspace {
struct wl_list link; /* struct server.workspaces */
struct server *server;
char *name;
struct wlr_scene_tree *tree;
struct lab_cosmic_workspace *cosmic_workspace;
struct {

View file

@ -106,15 +106,6 @@ get_special(struct server *server, struct wlr_scene_node *node)
if (node == &server->view_tree_always_on_top->node) {
return "server->always_on_top";
}
if (node->parent == server->view_tree) {
struct workspace *workspace;
wl_list_for_each(workspace, &server->workspaces.all, link) {
if (&workspace->tree->node == node) {
return workspace->name;
}
}
return "unknown workspace";
}
if (node->parent == &server->scene->tree) {
struct output *output;
wl_list_for_each(output, &server->outputs, link) {

View file

@ -96,9 +96,9 @@ desktop_focus_view(struct view *view, bool raise)
/*
* Switch workspace if necessary to make the view visible
* (unnecessary for "always on {top,bottom}" views).
* (unnecessary for omnipresent views).
*/
if (!view_is_always_on_top(view) && !view_is_always_on_bottom(view)) {
if (!view->visible_on_all_workspaces) {
workspaces_switch_to(view->workspace, /*update_focus*/ false);
}

View file

@ -267,13 +267,7 @@ matches_criteria(struct view *view, enum lab_view_criteria criteria)
return false;
}
if (criteria & LAB_VIEW_CRITERIA_CURRENT_WORKSPACE) {
/*
* Always-on-top views are always on the current desktop and are
* special in that they live in a different tree.
*/
struct server *server = view->server;
if (view->scene_tree->node.parent != server->workspaces.current->tree
&& !view_is_always_on_top(view)) {
if (view->workspace != view->server->workspaces.current) {
return false;
}
}
@ -303,11 +297,7 @@ matches_criteria(struct view *view, enum lab_view_criteria criteria)
}
}
if (criteria & LAB_VIEW_CRITERIA_NO_OMNIPRESENT) {
/*
* TODO: Once always-on-top views use a per-workspace
* sub-tree we can remove the check from this condition.
*/
if (view->visible_on_all_workspaces || view_is_always_on_top(view)) {
if (view->visible_on_all_workspaces) {
return false;
}
}
@ -1562,9 +1552,8 @@ view_toggle_always_on_top(struct view *view)
{
assert(view);
if (view_is_always_on_top(view)) {
view->workspace = view->server->workspaces.current;
wlr_scene_node_reparent(&view->scene_tree->node,
view->workspace->tree);
view->server->view_tree);
} else {
wlr_scene_node_reparent(&view->scene_tree->node,
view->server->view_tree_always_on_top);
@ -1584,9 +1573,8 @@ view_toggle_always_on_bottom(struct view *view)
{
assert(view);
if (view_is_always_on_bottom(view)) {
view->workspace = view->server->workspaces.current;
wlr_scene_node_reparent(&view->scene_tree->node,
view->workspace->tree);
view->server->view_tree);
} else {
wlr_scene_node_reparent(&view->scene_tree->node,
view->server->view_tree_always_on_bottom);
@ -1608,8 +1596,7 @@ view_move_to_workspace(struct view *view, struct workspace *workspace)
assert(workspace);
if (view->workspace != workspace) {
view->workspace = workspace;
wlr_scene_node_reparent(&view->scene_tree->node,
workspace->tree);
view_update_visibility(view);
}
}
@ -2411,7 +2398,9 @@ mappable_disconnect(struct mappable *mappable)
void
view_update_visibility(struct view *view)
{
bool visible = view->mapped && !view->minimized;
struct server *server = view->server;
bool visible = view->mapped && !view->minimized
&& view->workspace == server->workspaces.current;
if (visible == view->scene_tree->node.enabled) {
return;
}

View file

@ -234,9 +234,7 @@ add_workspace(struct server *server, const char *name)
struct workspace *workspace = znew(*workspace);
workspace->server = server;
workspace->name = xstrdup(name);
workspace->tree = wlr_scene_tree_create(server->view_tree);
wl_list_append(&server->workspaces.all, &workspace->link);
wlr_scene_node_set_enabled(&workspace->tree->node, false);
/* cosmic */
workspace->cosmic_workspace = lab_cosmic_workspace_create(server->workspaces.cosmic_group);
@ -435,7 +433,6 @@ workspaces_init(struct server *server)
}
server->workspaces.current = initial;
wlr_scene_node_set_enabled(&initial->tree->node, true);
lab_cosmic_workspace_set_active(initial->cosmic_workspace, true);
lab_ext_workspace_set_active(initial->ext_workspace, true);
}
@ -454,28 +451,11 @@ workspaces_switch_to(struct workspace *target, bool update_focus)
return;
}
/* Disable the old workspace */
wlr_scene_node_set_enabled(
&server->workspaces.current->tree->node, false);
lab_cosmic_workspace_set_active(
server->workspaces.current->cosmic_workspace, false);
lab_ext_workspace_set_active(
server->workspaces.current->ext_workspace, false);
/* Move Omnipresent views to new workspace */
struct view *view;
enum lab_view_criteria criteria =
LAB_VIEW_CRITERIA_CURRENT_WORKSPACE;
for_each_view_reverse(view, &server->views, criteria) {
if (view->visible_on_all_workspaces) {
view_move_to_workspace(view, target);
}
}
/* Enable the new workspace */
wlr_scene_node_set_enabled(&target->tree->node, true);
/* Save the last visited workspace */
server->workspaces.last = server->workspaces.current;
@ -483,24 +463,26 @@ workspaces_switch_to(struct workspace *target, bool update_focus)
server->workspaces.current = target;
struct view *grabbed_view = server->grabbed_view;
if (grabbed_view && !view_is_always_on_top(grabbed_view)) {
if (grabbed_view) {
view_move_to_workspace(grabbed_view, target);
}
struct view *view;
wl_list_for_each(view, &server->views, link) {
/* Omnipresent views are always in the current workspace */
if (view->visible_on_all_workspaces) {
view->workspace = target;
}
view_update_visibility(view);
}
/*
* Make sure we are focusing what the user sees. Only refocus if
* the focus is not already on an omnipresent or always-on-top view.
*
* TODO: Decouple always-on-top views from the omnipresent state.
* One option for that would be to create a new scene tree
* as child of every workspace tree and then reparent a-o-t
* windows to that one. Combined with adjusting the condition
* below that should take care of the issue.
* the focus is not already on an omnipresent.
*/
if (update_focus) {
struct view *active_view = server->active_view;
if (!active_view || (!active_view->visible_on_all_workspaces
&& !view_is_always_on_top(active_view))) {
if (!active_view || !active_view->visible_on_all_workspaces) {
desktop_focus_topmost_view(server);
}
}
@ -514,9 +496,6 @@ workspaces_switch_to(struct workspace *target, bool update_focus)
*/
cursor_update_focus(server);
/* Ensure that only currently visible fullscreen windows hide the top layer */
desktop_update_top_layer_visibility(server);
lab_cosmic_workspace_set_active(target->cosmic_workspace, true);
lab_ext_workspace_set_active(target->ext_workspace, true);
}
@ -569,7 +548,6 @@ workspaces_find(struct workspace *anchor, const char *name, bool wrap)
static void
destroy_workspace(struct workspace *workspace)
{
wlr_scene_node_destroy(&workspace->tree->node);
zfree(workspace->name);
wl_list_remove(&workspace->link);
wl_list_remove(&workspace->on_cosmic.activate.link);

View file

@ -1019,7 +1019,7 @@ handle_new_xdg_toplevel(struct wl_listener *listener, void *data)
}
view->workspace = server->workspaces.current;
view->scene_tree = wlr_scene_tree_create(view->workspace->tree);
view->scene_tree = wlr_scene_tree_create(server->view_tree);
wlr_scene_node_set_enabled(&view->scene_tree->node, false);
struct wlr_scene_tree *tree = wlr_scene_xdg_surface_create(

View file

@ -1010,7 +1010,7 @@ xwayland_view_create(struct server *server,
xsurface->data = view;
view->workspace = server->workspaces.current;
view->scene_tree = wlr_scene_tree_create(view->workspace->tree);
view->scene_tree = wlr_scene_tree_create(server->view_tree);
node_descriptor_create(&view->scene_tree->node,
LAB_NODE_VIEW, view, /*data*/ NULL);