osd: optionally show windows on all workspaces

Also share common config option (rc.window_switcher.criteria) in osd.c and
desktop.c to make sure the window lists are always consistent.

Configure with `<windowSwitcher allWorkspaces="yes|no">`

docs/labwc-config.5.scd

@@ -177,7 +177,7 @@ this is for compatibility with Openbox.
 
 ## WINDOW SWITCHER
 
-*<windowSwitcher show="" preview="" outlines="">*
+*<windowSwitcher show="" preview="" outlines="" allWorkspaces="">*
 	*show* [yes|no] Draw the OnScreenDisplay when switching between
 	windows. Default is yes.
 
@@ -187,6 +187,10 @@ this is for compatibility with Openbox.
 	*outlines* [yes|no] Draw an outline around the selected window when
 	switching between windows. Default is yes.
 
+	*allWorkspaces* [yes|no] Show windows regardless of what workspace
+	they are on. Default no (that is only windows on the current workspace
+	are shown).
+
 *<windowSwitcher><fields><field content="" width="%">*
 	Define window switcher fields.
 

docs/rc.xml.all

@@ -54,7 +54,7 @@
     Just as for window-rules, 'identifier' relates to app_id for native Wayland
     windows and WM_CLASS for XWayland clients.
   -->
-  <windowSwitcher show="yes" preview="yes" outlines="yes">
+  <windowSwitcher show="yes" preview="yes" outlines="yes" allWorkspaces="no">
     <fields>
       <field content="type" width="25%" />
       <field content="trimmed_identifier" width="25%" />

include/config/rcxml.h

@@ -135,10 +135,12 @@ struct rcxml {
 	/* Regions */
 	struct wl_list regions;  /* struct region.link */
 
+	/* Window Switcher */
 	struct {
 		bool show;
 		bool preview;
 		bool outlines;
+		uint32_t criteria;
 		struct wl_list fields;  /* struct window_switcher_field.link */
 	} window_switcher;
 

src/config/rcxml.c

@@ -894,6 +894,11 @@ entry(xmlNode *node, char *nodename, char *content)
 		set_bool(content, &rc.window_switcher.preview);
 	} else if (!strcasecmp(nodename, "outlines.windowSwitcher")) {
 		set_bool(content, &rc.window_switcher.outlines);
+	} else if (!strcasecmp(nodename, "allWorkspaces.windowSwitcher")) {
+		if (parse_bool(content, -1) == true) {
+			rc.window_switcher.criteria &=
+				~LAB_VIEW_CRITERIA_CURRENT_WORKSPACE;
+		}
 
 	/* Remove this long term - just a friendly warning for now */
 	} else if (strstr(nodename, "windowswitcher.core")) {
@@ -1148,6 +1153,9 @@ rcxml_init(void)
 	rc.window_switcher.show = true;
 	rc.window_switcher.preview = true;
 	rc.window_switcher.outlines = true;
+	rc.window_switcher.criteria = LAB_VIEW_CRITERIA_CURRENT_WORKSPACE
+		| LAB_VIEW_CRITERIA_ROOT_TOPLEVEL
+		| LAB_VIEW_CRITERIA_NO_SKIP_WINDOW_SWITCHER;
 
 	rc.resize_indicator = LAB_RESIZE_INDICATOR_NEVER;
 

src/desktop.c

@@ -118,17 +118,7 @@ desktop_cycle_view(struct server *server, struct view *start_view,
 	bool forwards = dir == LAB_CYCLE_DIR_FORWARD;
 	iter = forwards ? view_next_no_head_stop : view_prev_no_head_stop;
 
-	/*
+	enum lab_view_criteria criteria = rc.window_switcher.criteria;
-	 * TODO: These criteria are the same as in display_osd() in osd.c
-	 * for the time being.
-	 *
-	 * A future improvement could be to make this configurable for example
-	 * in rc.xml and then use rc.cycle_view_criteria (or whatever) both
-	 * here and in the osd.c window-switcher code
-	 */
-	enum lab_view_criteria criteria = LAB_VIEW_CRITERIA_CURRENT_WORKSPACE
-		| LAB_VIEW_CRITERIA_ROOT_TOPLEVEL
-		| LAB_VIEW_CRITERIA_NO_SKIP_WINDOW_SWITCHER;
 
 	/*
 	 * Views are listed in stacking order, topmost first.  Usually the

src/osd.c

@@ -406,10 +406,7 @@ display_osd(struct output *output)
 
 	struct wl_array views;
 	wl_array_init(&views);
-	view_array_append(server, &views,
+	view_array_append(server, &views, rc.window_switcher.criteria);
-		LAB_VIEW_CRITERIA_CURRENT_WORKSPACE
-		| LAB_VIEW_CRITERIA_ROOT_TOPLEVEL
-		| LAB_VIEW_CRITERIA_NO_SKIP_WINDOW_SWITCHER);
 
 	float scale = output->wlr_output->scale;
 	int w = theme->osd_window_switcher_width;
@@ -460,10 +457,7 @@ nr_entries(struct server *server)
 {
 	struct wl_array views;
 	wl_array_init(&views);
-	view_array_append(server, &views,
+	view_array_append(server, &views, rc.window_switcher.criteria);
-		LAB_VIEW_CRITERIA_CURRENT_WORKSPACE
-		| LAB_VIEW_CRITERIA_ROOT_TOPLEVEL
-		| LAB_VIEW_CRITERIA_NO_SKIP_WINDOW_SWITCHER);
 	int count = wl_array_len(&views);
 	wl_array_release(&views);
 	return count;