osd: add window-switcher field content types (#1623)

...`workspace`, `state`, `type_short` and `output`.

Example usage:

    <windowSwitcher allWorkspaces="yes">
      <fields>
        <field content="workspace" width="5%" />
        <field content="state" width="3%" />
        <field content="type_short" width="3%" />
        <field content="output" width="9%" />
        <field content="identifier" width="30%" />
        <field content="title" width="50%" />
      </fields>
    </windowSwitcher>

docs/labwc-config.5.scd

@@ -216,6 +216,14 @@ this is for compatibility with Openbox.
 
 		- *title* Show window title if different to app_id
 
+		- *workspace* Show workspace name
+
+		- *state* Show window state, M/m/F (max/min/full)
+
+		- *type_short* Show view type ("W" or "X")
+
+		- *output* Show output id, if more than one output detected
+
 	*width* defines the width of the field expressed as a percentage of
 	the overall window switcher width. The "%" character is required.
 

docs/rc.xml.all

@@ -63,6 +63,24 @@
     </fields>
   </windowSwitcher>
 
+  <!--
+    When using all workspaces option of window switcher, there are extra fields
+    that can be used, workspace (variable length), state (single space), 
+    type_short (3 spaces), output (variable length), and can be set up 
+    like this. Note: output only shows if more than one output available.
+
+    <windowSwitcher show="yes" preview="no" outlines="no" allWorkspaces="yes">
+      <fields>
+        <field content="workspace" width="5%" />
+        <field content="state" width="3%" />
+        <field content="type_short" width="3%" />
+        <field content="output" width="9%" />
+        <field content="identifier" width="30%" />
+        <field content="title" width="50%" />
+       </fields>  
+    </windowSwitcher>
+  -->
+
   <!-- edge strength is in pixels -->
   <resistance>
     <screenEdgeStrength>20</screenEdgeStrength>

include/config/rcxml.h

@@ -21,6 +21,10 @@ enum window_switcher_field_content {
 	LAB_FIELD_IDENTIFIER,
 	LAB_FIELD_TRIMMED_IDENTIFIER,
 	LAB_FIELD_TITLE,
+	LAB_FIELD_WORKSPACE,
+	LAB_FIELD_WIN_STATE,
+	LAB_FIELD_TYPE_SHORT,
+	LAB_FIELD_OUTPUT,
 };
 
 enum view_placement_policy {

src/config/rcxml.c

@@ -207,6 +207,14 @@ fill_window_switcher_field(char *nodename, char *content)
 			current_field->content = LAB_FIELD_TRIMMED_IDENTIFIER;
 		} else if (!strcmp(content, "title")) {
 			current_field->content = LAB_FIELD_TITLE;
+		} else if (!strcmp(content, "workspace")) {
+			current_field->content = LAB_FIELD_WORKSPACE;
+		} else if (!strcmp(content, "state")) {
+			current_field->content = LAB_FIELD_WIN_STATE;
+		} else if (!strcmp(content, "type_short")) {
+			current_field->content = LAB_FIELD_TYPE_SHORT;
+		} else if (!strcmp(content, "output")) {
+			current_field->content = LAB_FIELD_OUTPUT;
 		} else {
 			wlr_log(WLR_ERROR, "bad windowSwitcher field '%s'", content);
 		}

src/osd.c

@@ -239,6 +239,20 @@ get_type(struct view *view)
 	return "";
 }
 
+static const char *
+get_type_short(struct view *view)
+{
+	switch (view->type) {
+	case LAB_XDG_SHELL_VIEW:
+		return "[W]";
+#if HAVE_XWAYLAND
+	case LAB_XWAYLAND_VIEW:
+		return "[X]";
+#endif
+	}
+	return "";
+}
+
 static const char *
 get_app_id(struct view *view)
 {
@@ -364,6 +378,31 @@ render_osd(struct server *server, cairo_t *cairo, int w, int h,
 			case LAB_FIELD_TYPE:
 				buf_add(&buf, get_type(*view));
 				break;
+			case LAB_FIELD_TYPE_SHORT:
+				buf_add(&buf, get_type_short(*view));
+				break;
+			case LAB_FIELD_WORKSPACE:
+				buf_add(&buf, (*view)->workspace->name);
+				break;
+			case LAB_FIELD_WIN_STATE:
+				if ((*view)->maximized) {
+					buf_add(&buf, "M");
+				} else if ((*view)->minimized) {
+					buf_add(&buf, "m");
+				} else if ((*view)->fullscreen) {
+					buf_add(&buf, "F");
+				} else {
+					buf_add(&buf, " ");
+				}
+				break;
+			case LAB_FIELD_OUTPUT:
+				if (wl_list_length(&server->outputs) > 1 &&
+						output_is_usable((*view)->output)) {
+					buf_add(&buf, (*view)->output->wlr_output->name);
+				} else {
+					buf_add(&buf, " ");
+				}
+				break;
 			case LAB_FIELD_IDENTIFIER:
 				buf_add(&buf, get_app_id(*view));
 				break;