feat: port to Wayland

meson.build

@@ -31,9 +31,10 @@ gnome_stack = '>= 3.24.0'
 dep_glib = dependency('glib-2.0', version: glib_dep)
 dep_gio = dependency('gio-unix-2.0', version: glib_dep)
 dep_gdk = dependency('gdk-3.0', version: gnome_stack)
-dep_gdk_x11 = dependency('gdk-x11-3.0', version: gnome_stack)
 dep_gtk = dependency('gtk+-3.0', version: gnome_stack)
 dep_vala = dependency('vapigen', version: '>= 0.48.0')
+dep_gtk_layer_shell = dependency('gtk-layer-shell-0', version: '>= 0.8.0')
+dep_xfce4windowing = dependency('libxfce4windowing-0', version: '>= 4.19.7')
 
 # Make gettext work
 add_global_arguments('-DGETTEXT_PACKAGE="budgie-desktop-view"', language: 'c')

src/budgie_desktop_view.vala

@@ -45,9 +45,9 @@ public const string[] SUPPORTED_TERMINALS = {
 };
 
 public class DesktopView : Gtk.ApplicationWindow {
-	Screen default_screen;
-	Display default_display;
-	Monitor primary_monitor;
+	libxfce4windowing.Screen default_screen;
+	Gdk.Display default_display;
+	libxfce4windowing.Monitor? primary_monitor;
 	Rectangle? primary_monitor_geo = null;
 	UnifiedProps shared_props;
 	Raven? raven = null;
@@ -89,6 +89,16 @@ public class DesktopView : Gtk.ApplicationWindow {
 			type_hint: Gdk.WindowTypeHint.DESKTOP
 		);
 
+		GtkLayerShell.init_for_window(this);
+		GtkLayerShell.set_layer(this, GtkLayerShell.Layer.BACKGROUND);
+		GtkLayerShell.set_anchor(
+			this,
+			GtkLayerShell.Edge.TOP | GtkLayerShell.Edge.LEFT,
+			true
+		);
+		GtkLayerShell.set_keyboard_mode(this, GtkLayerShell.KeyboardMode.ON_DEMAND);
+		GtkLayerShell.try_force_commit(this);
+
 		shared_props = new UnifiedProps(); // Create shared props
 		shared_props.cursor_changed.connect((cursor) => {
 			get_window().set_cursor(cursor);
@@ -143,8 +153,6 @@ public class DesktopView : Gtk.ApplicationWindow {
 		}
 
 		// Window settings
-		set_keep_below(true); // Stay below other windows
-		set_position(WindowPosition.CENTER); // Don't account for anything like current pouse position
 		show_menubar = false;
 
 		desktop_menu = new DesktopMenu(); // Create our new desktop menu
@@ -160,11 +168,7 @@ public class DesktopView : Gtk.ApplicationWindow {
 
 		get_display_geo(); // Set our geo
 
-		default_screen.composited_changed.connect(set_window_transparent);
 		default_screen.monitors_changed.connect(on_resolution_change);
-		default_screen.size_changed.connect(on_resolution_change);
-
-		setup_root_window_event_handler();
 
 		add(flow);
 
@@ -480,7 +484,7 @@ public class DesktopView : Gtk.ApplicationWindow {
 	// get_all_desktop_files will get all the files in our Desktop folder and generate items for them
 	private void get_all_desktop_files() {
 		var c = new Cancellable(); // Create a new cancellable stack
-		FileEnumerator? desktop_file_enumerator = null; 
+		FileEnumerator? desktop_file_enumerator = null;
 
 		try {
 			desktop_file_enumerator = desktop_file.enumerate_children("standard::*,standard::display-name", FileQueryInfoFlags.NONE, c);
@@ -511,16 +515,16 @@ public class DesktopView : Gtk.ApplicationWindow {
 
 	// get_display_geo will get or update our primary monitor workarea
 	private void get_display_geo() {
-		default_screen = Screen.get_default(); // Get our current default Screen
-		screen = default_screen;
+		default_screen = libxfce4windowing.Screen.get_default(); // Get our current default Screen
+		primary_monitor = default_screen.get_primary_monitor();
 
-		default_display = Display.get_default(); // Get the display related to it
+		default_display = default_screen.gdk_screen.get_display(); // Get the display related to it
 		shared_props.blocked_cursor = new Cursor.from_name(default_display, "not-allowed");
 		shared_props.hand_cursor = new Cursor.for_display(default_display, CursorType.ARROW);
 		shared_props.loading_cursor = new Cursor.from_name(default_display, "progress");
 
 		shared_props.launch_context = default_display.get_app_launch_context(); // Get the app launch context for the default display
-		shared_props.launch_context.set_screen(default_screen); // Set the screen
+		shared_props.launch_context.set_screen(default_screen.gdk_screen); // Set the screen
 
 		shared_props.launch_context.launch_started.connect(() => {
 			shared_props.is_launching = true;
@@ -537,11 +541,9 @@ public class DesktopView : Gtk.ApplicationWindow {
 			shared_props.current_cursor = shared_props.hand_cursor;
 		});
 
-		primary_monitor = default_display.get_primary_monitor(); // Get the actual primary monitor for this display
-
 		primary_monitor_geo = primary_monitor.get_workarea(); // Get the working area of this monitor
-		shared_props.s_factor = primary_monitor.get_scale_factor(); // Get the current scaling factor
-		update_window_position();
+		shared_props.s_factor = primary_monitor.get_scale(); // Get the current scaling factor
+		update_window_sizing();
 	}
 
 	// get_mount_uuid will get a mount UUID and return it
@@ -617,8 +619,8 @@ public class DesktopView : Gtk.ApplicationWindow {
 		} else if (event.button == 3) { // Right click
 			dismiss_raven(); // Dismiss raven
 
-			desktop_menu.place_on_monitor(primary_monitor); // Ensure menu is on primary monitor
-			desktop_menu.set_screen(default_screen); // Ensure menu is on our screen
+			desktop_menu.place_on_monitor(primary_monitor.gdk_monitor); // Ensure menu is on primary monitor
+			desktop_menu.set_screen(default_screen.gdk_screen); // Ensure menu is on our screen
 			desktop_menu.popup_at_pointer(event); // Popup where our mouse is
 
 			return Gdk.EVENT_STOP;
@@ -958,7 +960,7 @@ public class DesktopView : Gtk.ApplicationWindow {
 
 		if (visible_setting) {
 			show();
-			update_window_position();
+			update_window_sizing();
 		} else {
 			hide();
 		}
@@ -1016,22 +1018,6 @@ public class DesktopView : Gtk.ApplicationWindow {
 		enforce_content_limit(); // Update our flowbox content limit based on icon / item sizing
 	}
 
-	public void setup_root_window_event_handler() {
-		Gdk.Window root_window = default_screen.get_root_window();
-		root_window.set_events(EventMask.ALL_EVENTS_MASK);
-
-		root_window.add_filter((xevent, e) => {
-			X.Event xev = *((X.Event*) xevent);
-
-			if (xev.type != X.EventType.PropertyNotify) return FilterReturn.CONTINUE;
-			if (xev.xproperty.atom == Gdk.X11.get_xatom_by_name("_NET_WORKAREA")) {
-				get_display_geo();
-			}
-
-			return FilterReturn.CONTINUE;
-		});
-	}
-
 	// create_fileitem_sorter will create our fileitem sorter
 	// Folders should go before files, with the values of each being collated
 	private void create_fileitem_sorter() {
@@ -1108,9 +1094,10 @@ public class DesktopView : Gtk.ApplicationWindow {
 		}
 	}
 
-	private void update_window_position() {
+	private void update_window_sizing() {
 		set_default_size(primary_monitor_geo.width, primary_monitor_geo.height);
 		flow.set_size_request(primary_monitor_geo.width, primary_monitor_geo.height);
-		move(primary_monitor_geo.x, primary_monitor_geo.y); // Move the window to the x/y of our primary monitor
+		get_item_size(); // Update desired item spacing
+		enforce_content_limit();
 	}
 }

src/desktop_item.vala

@@ -187,14 +187,14 @@ public class DesktopItem : FlowBoxChild {
 
 		icon = ico; // Set the icon
 
-		IconInfo? icon_info = props.icon_theme.lookup_by_gicon_for_scale(icon, props.icon_size, props.s_factor, IconLookupFlags.USE_BUILTIN & IconLookupFlags.GENERIC_FALLBACK);
+		IconInfo? icon_info = props.icon_theme.lookup_by_gicon_for_scale(icon, props.icon_size, (int) props.s_factor, IconLookupFlags.USE_BUILTIN & IconLookupFlags.GENERIC_FALLBACK);
 		set_icon_from_iconinfo(icon_info);
 	}
 
 	// set_icon_from_name is responsible for setting our icon based on an icon name
 	public void set_icon_from_name(string icon_name) throws Error {
 		try {
-			Pixbuf? pix = props.icon_theme.load_icon_for_scale(icon_name, props.icon_size, props.s_factor, IconLookupFlags.GENERIC_FALLBACK);
+			Pixbuf? pix = props.icon_theme.load_icon_for_scale(icon_name, props.icon_size, (int) props.s_factor, IconLookupFlags.GENERIC_FALLBACK);
 			set_image_pixbuf(pix);
 		} catch (Error e) {
 			throw e;

src/meson.build

@@ -14,10 +14,11 @@ desktop_view_sources = [
 
 desktop_view_deps = [
 	dep_gdk,
-	dep_gdk_x11,
 	dep_glib,
 	dep_gio,
-	dep_gtk
+	dep_gtk,
+	dep_gtk_layer_shell,
+	dep_xfce4windowing
 ]
 
 c_flags = []
@@ -31,6 +32,7 @@ executable(
 		'--pkg', 'gio-unix-2.0',
 		'--pkg', 'gtk+-3.0',
 		'--target-glib=2.64',
+		'--vapidir', join_paths(meson.source_root(), 'vapi'),
 	],
 	install: true,
 	install_dir: join_paths(get_option('prefix'), get_option('bindir')),

src/unified_props.vala

@@ -42,7 +42,7 @@ public class UnifiedProps : Object {
 	public FileMenu? file_menu;
 	public IconTheme icon_theme;
 	public int? icon_size;
-	public int? s_factor;
+	public uint? s_factor;
 
 	public signal void cursor_changed(Gdk.Cursor cursor);
 	public signal void thumbnail_size_changed();

vapi/libxfce4windowing-0-custom.vala

@@ -0,0 +1,13 @@
+ namespace libxfce4windowing {
+	[CCode (cheader_filename = "libxfce4windowing/libxfce4windowing.h", cname = "XfwApplication", type_id = "xfw_application_get_type ()")]
+	public abstract class Application : GLib.Object {
+		[CCode (cname = "xfw_application_get_instance")]
+		public unowned libxfce4windowing.ApplicationInstance? get_instance (libxfce4windowing.Window window);
+    }
+
+    [CCode (cheader_filename = "libxfce4windowing/libxfce4windowing.h", cname = "XfwWorkspace", type_id = "xfw_workspace_get_type ()")]
+	public interface Workspace : GLib.Object {
+        [CCode (cname = "xfw_workspace_assign_to_workspace_group")]
+        public bool assign_to_workspace_group (libxfce4windowing.WorkspaceGroup group) throws GLib.Error;
+    }
+ }

vapi/libxfce4windowing-0.deps

@@ -0,0 +1,4 @@
+gdk-3.0
+glib-2.0
+gtk+-3.0
+libwnck-3.0