Add allOutputs option to window switcher

Introduces a new configuration option for the window switcher
that allows users to filter windows by output (monitor).

Changes:
- Added `allOutputs` attribute to <windowSwitcher>
  - Default is "no" (only shows windows on the cursor's output)
  - When set to "yes", shows windows from all outputs

- Introduced LAB_VIEW_CRITERIA_CURSOR_OUTPUT flag to filter views by output
  - Windows are matched against the output nearest to the cursor
  - Bit positions of existing criteria flags shifted to accommodate new flag

- Modified OSD display behavior to show only on the cursor's output
  - Previously, the OSD would appear on all outputs simultaneously
  - Now displays only on the output nearest to the cursor location

This provides better multi-monitor support by allowing users to focus on
windows relevant to their current screen, reducing visual clutter when
working across multiple displays.

docs/labwc-config.5.scd

@@ -339,7 +339,7 @@ this is for compatibility with Openbox.
 ## WINDOW SWITCHER
 
 ```
-<windowSwitcher show="yes" style="classic" preview="yes" outlines="yes" allWorkspaces="no">
+<windowSwitcher show="yes" style="classic" preview="yes" outlines="yes" allWorkspaces="no" allOutputs="no">
   <fields>
     <field content="icon" width="5%" />
     <field content="desktop_entry_name" width="30%" />
@@ -348,7 +348,7 @@ this is for compatibility with Openbox.
 </windowSwitcher>
 ```
 
-*<windowSwitcher show="" style="" preview="" outlines="" allWorkspaces="" unshade="">*
+*<windowSwitcher show="" style="" preview="" outlines="" allWorkspaces="" allOutputs="" unshade="">*
 	*show* [yes|no] Draw the OnScreenDisplay when switching between
 	windows. Default is yes.
 
@@ -366,6 +366,10 @@ this is for compatibility with Openbox.
 	they are on. Default no (that is only windows on the current workspace
 	are shown).
 
+	*allOutputs* [yes|no] Show windows regardless of what output
+	they are on. Default no (that is only windows on the cursor output
+	are shown).
+
 	*unshade* [yes|no] Temporarily unshade windows when switching between
 	them and permanently unshade on the final selection. Default is yes.
 

docs/rc.xml.all

@@ -78,7 +78,7 @@
   </theme>
 
   <windowSwitcher show="yes" style="classic" preview="yes"
-      outlines="yes" allWorkspaces="no" unshade="yes">
+      outlines="yes" allWorkspaces="no" allOutputs="no" unshade="yes">
     <fields>
       <field content="icon" width="5%" />
       <field content="desktop_entry_name" width="30%" />
@@ -98,7 +98,7 @@
     Some contents are fixed-length and others are variable-length.
     See "man 5 labwc-config" for details.
 
-    <windowSwitcher show="yes" preview="no" outlines="no" allWorkspaces="yes">
+    <windowSwitcher show="yes" preview="no" outlines="no" allWorkspaces="yes" allOutputs="no">
       <fields>
         <field content="workspace" width="5%" />
         <field content="state" width="3%" />
@@ -118,7 +118,7 @@
     then workspace name, then identifier/app-id, then the window title.
     It uses 100% of OSD window width.
 
-    <windowSwitcher show="yes" preview="no" outlines="no" allWorkspaces="yes">
+    <windowSwitcher show="yes" preview="no" outlines="no" allWorkspaces="yes" allOutputs="no">
       <fields>
         <field content="custom" format="foobar %b %3s %-10o %-20W %-10i %t" width="100%" />
       </fields>

include/config/types.h

@@ -67,16 +67,17 @@ enum lab_view_criteria {
 	 * what is visible on the current workspace
 	 */
 	LAB_VIEW_CRITERIA_CURRENT_WORKSPACE       = 1 << 0,
+	LAB_VIEW_CRITERIA_CURSOR_OUTPUT           = 1 << 1,
 
 	/* Positive criteria */
-	LAB_VIEW_CRITERIA_FULLSCREEN              = 1 << 1,
+	LAB_VIEW_CRITERIA_FULLSCREEN              = 1 << 2,
-	LAB_VIEW_CRITERIA_ALWAYS_ON_TOP           = 1 << 2,
+	LAB_VIEW_CRITERIA_ALWAYS_ON_TOP           = 1 << 3,
-	LAB_VIEW_CRITERIA_ROOT_TOPLEVEL           = 1 << 3,
+	LAB_VIEW_CRITERIA_ROOT_TOPLEVEL           = 1 << 4,
 
 	/* Negative criteria */
-	LAB_VIEW_CRITERIA_NO_ALWAYS_ON_TOP        = 1 << 6,
+	LAB_VIEW_CRITERIA_NO_ALWAYS_ON_TOP        = 1 << 7,
-	LAB_VIEW_CRITERIA_NO_SKIP_WINDOW_SWITCHER = 1 << 7,
+	LAB_VIEW_CRITERIA_NO_SKIP_WINDOW_SWITCHER = 1 << 8,
-	LAB_VIEW_CRITERIA_NO_OMNIPRESENT          = 1 << 8,
+	LAB_VIEW_CRITERIA_NO_OMNIPRESENT          = 1 << 9,
 };
 
 /*

src/config/rcxml.c

@@ -1217,6 +1217,11 @@ entry(xmlNode *node, char *nodename, char *content)
 			rc.window_switcher.criteria &=
 				~LAB_VIEW_CRITERIA_CURRENT_WORKSPACE;
 		}
+	} else if (!strcasecmp(nodename, "allOutputs.windowSwitcher")) {
+		if (parse_bool(content, -1) == true) {
+			rc.window_switcher.criteria &=
+				~LAB_VIEW_CRITERIA_CURSOR_OUTPUT;
+		}
 	} else if (!strcasecmp(nodename, "unshade.windowSwitcher")) {
 		set_bool(content, &rc.window_switcher.unshade);
 
@@ -1433,6 +1438,7 @@ rcxml_init(void)
 	rc.window_switcher.outlines = true;
 	rc.window_switcher.unshade = true;
 	rc.window_switcher.criteria = LAB_VIEW_CRITERIA_CURRENT_WORKSPACE
+	        | LAB_VIEW_CRITERIA_CURSOR_OUTPUT
 		| LAB_VIEW_CRITERIA_ROOT_TOPLEVEL
 		| LAB_VIEW_CRITERIA_NO_SKIP_WINDOW_SWITCHER;
 

src/osd/osd.c

@@ -292,11 +292,20 @@ update_osd(struct server *server)
 
 	if (rc.window_switcher.show) {
 		/* Display the actual OSD */
-		struct output *output;
+		// struct output *output;
-		wl_list_for_each(output, &server->outputs, link) {
+		// wl_list_for_each(output, &server->outputs, link) {
-			if (!output_is_usable(output)) {
+		// 	if (!output_is_usable(output)) {
-				continue;
+		// 		continue;
-			}
+		// 	}
+		// 	if (!output->osd_scene.tree) {
+		// 		osd_impl->create(output, &views);
+		// 		assert(output->osd_scene.tree);
+		// 	}
+		// 	osd_impl->update(output);
+		// }
+
+		struct output *output = output_nearest_to_cursor(server);
+		if (output_is_usable(output)) {
 			if (!output->osd_scene.tree) {
 				osd_impl->create(output, &views);
 				assert(output->osd_scene.tree);

src/view.c

@@ -277,6 +277,13 @@ matches_criteria(struct view *view, enum lab_view_criteria criteria)
 			return false;
 		}
 	}
+	if (criteria & LAB_VIEW_CRITERIA_CURSOR_OUTPUT) {
+		struct server *server = view->server;
+		struct output *output = output_nearest_to_cursor(server);
+		if (view->output != output) {
+			return false;
+		}
+	}
 	if (criteria & LAB_VIEW_CRITERIA_FULLSCREEN) {
 		if (!view->fullscreen) {
 			return false;