add basic cairo widget for session lock (WIP)

meson.build

@@ -2,7 +2,7 @@ project('diya-shell',
     ['c'],
     version: '0.1.0',
     license: 'MIT',
-    meson_version: '>=0.51.0',
+    meson_version: '>=0.58.0',
     default_options: ['c_std=gnu11', 'warning_level=3'])
 
 lib_so_version = '0'
@@ -22,7 +22,10 @@ wayland_client = dependency('wayland-client', version: '>=1.10.0')
 wayland_scanner = find_program('wayland-scanner')
 
 # use system xdg-shell protocol when available
-#wayland_protocols = dependency('wayland-protocols', version: '>=1.16')
+wayland_protocols = dependency('wayland-protocols', version: '>=1.16')
+
+wl_protocol_dir = wayland_protocols.get_variable('pkgdatadir')
+
 
 # pkg_config = import('pkgconfig')
 # gnome = import('gnome')
@@ -30,11 +33,12 @@ wayland_scanner = find_program('wayland-scanner')
 gtk_layer_shell = dependency('gtk4-layer-shell-0', version: '>=1.0.2')
 wayland_targets=[]
 
-wayland_protos = [
-  'protocols/wlr-foreign-toplevel-management-unstable-v1'
+wl_protocols = [
+    wl_protocol_dir / 'staging/ext-session-lock/ext-session-lock-v1',
+    'protocols/wlr-foreign-toplevel-management-unstable-v1'
 ]
 
-foreach proto : wayland_protos
+foreach proto : wl_protocols
   xml  = ''.join([proto,'.xml']) 
   header = ''.join([proto.split('/').get(-1),'.h'])
   cfile = ''.join([proto.split('/').get(-1),'.c'])
@@ -51,6 +55,9 @@ src = [
     'src/wayland.c',
     'src/shell.c',
     'src/foreign.c',
+    'src/session.c',
+    'src/widgets/cairo-widget.c',
+    'src/main.c',
     wayland_targets]
 
 executable(