[libadwaita/wip/exalm/docs: 7/7] Add a hello world example

[Alexander Mikhaylenko <alexm src gnome org>]

commit 973a013bcddc1c0641a0d85048cbcb961c2b3967
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Mon Dec 27 14:51:14 2021 +0500

    Add a hello world example

 examples/hello-world/hello.c     | 26 ++++++++++++++++++++++++++
 examples/hello-world/meson.build | 13 +++++++++++++
 examples/meson.build             |  1 +
 meson.build                      |  1 +
 po/POTFILES.skip                 |  1 +
 5 files changed, 42 insertions(+)
---
diff --git a/examples/hello-world/hello.c b/examples/hello-world/hello.c
new file mode 100644
index 00000000..7a1409e8
--- /dev/null
+++ b/examples/hello-world/hello.c
@@ -0,0 +1,26 @@
+#include <adwaita.h>
+
+static void
+activate_cb (GtkApplication *app)
+{
+  GtkWidget *window = gtk_application_window_new (app);
+  GtkWidget *label = gtk_label_new ("Hello World");
+
+  gtk_window_set_title (GTK_WINDOW (window), "Hello");
+  gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
+  gtk_window_set_child (GTK_WINDOW (window), label);
+  gtk_window_present (GTK_WINDOW (window));
+}
+
+int
+main (int   argc,
+      char *argv[])
+{
+  g_autoptr (AdwApplication) app = NULL;
+
+  app = adw_application_new ("org.example.Hello", G_APPLICATION_FLAGS_NONE);
+
+  g_signal_connect (app, "activate", G_CALLBACK (activate_cb), NULL);
+
+  return g_application_run (G_APPLICATION (app), argc, argv);
+}
diff --git a/examples/hello-world/meson.build b/examples/hello-world/meson.build
new file mode 100644
index 00000000..928a4e19
--- /dev/null
+++ b/examples/hello-world/meson.build
@@ -0,0 +1,13 @@
+# Uncomment to build separately
+# project('hello', 'c')
+
+gnome = import('gnome')
+
+executable('hello',
+  'hello.c',
+  dependencies: [
+    dependency('gtk4'),
+    dependency('libadwaita-1'),
+  ],
+  install: false,
+)
diff --git a/examples/meson.build b/examples/meson.build
new file mode 100644
index 00000000..0cd0f1d9
--- /dev/null
+++ b/examples/meson.build
@@ -0,0 +1 @@
+subdir('hello-world')
diff --git a/meson.build b/meson.build
index baba25be..a746bfbd 100644
--- a/meson.build
+++ b/meson.build
@@ -120,6 +120,7 @@ gnome = import('gnome')
 subdir('src')
 subdir('po')
 subdir('demo')
+subdir('examples')
 subdir('tests')
 subdir('doc')
 
diff --git a/po/POTFILES.skip b/po/POTFILES.skip
index c60b8aed..ed5b6652 100644
--- a/po/POTFILES.skip
+++ b/po/POTFILES.skip
@@ -2,3 +2,4 @@
 # Please keep this file sorted alphabetically.
 demo/
 doc/
+examples/