Add about dialog

data/camera.ui

@@ -229,9 +229,11 @@
                               </object>
                             </child>
                             <child>
-                              <object class="GtkLabel">
-                                <property name="can-focus">0</property>
-                                <property name="label" translatable="yes">Settings aren't functional yet</property>
+                              <object class="GtkButton">
+                                <property name="label" translatable="yes">About</property>
+                                <property name="margin-start">10</property>
+                                <property name="margin-end">10</property>
+                                <property name="action-name">app.about</property>
                               </object>
                             </child>
                           </object>

meson.build

@@ -1,4 +1,4 @@
-project('megapixels', 'c')
+project('megapixels', 'c', version: '1.1.0')
 
 gnome = import('gnome')
 gtkdep = dependency('gtk4')
@@ -20,6 +20,8 @@ configure_file(
   output: 'config.h',
   configuration: conf)
 
+add_global_arguments('-DVERSION="@0@"'.format(meson.project_version()), language: 'c')
+
 # Define DEBUG for debug builds only (debugoptimized is not included on this one)
 if get_option('buildtype') == 'debug'
   add_global_arguments('-DDEBUG', language: 'c')

src/main.c

@@ -456,6 +456,19 @@ run_capture_action(GSimpleAction *action, GVariant *param, gpointer user_data)
 	mp_io_pipeline_capture();
 }
 
+void
+run_about_action(GSimpleAction *action, GVariant *param, GApplication *app)
+{
+	gtk_show_about_dialog(NULL, "program-name", "Megapixels",
+			"title", "Megapixels",
+			"logo-icon-name", "org.postmarketos.Megapixels",
+			"comments", "The postmarketOS camera application",
+			"website", "https://sr.ht/~martijnbraam/megapixels",
+			"version", VERSION,
+			"license-type", GTK_LICENSE_GPL_3_0_ONLY,
+			NULL);
+}
+
 void
 run_quit_action(GSimpleAction *action, GVariant *param, GApplication *app)
 {
@@ -889,6 +902,7 @@ activate(GtkApplication *app, gpointer data)
 	create_simple_action(app, "close-settings", G_CALLBACK(run_close_settings_action));
 	create_simple_action(app, "open-last", G_CALLBACK(run_open_last_action));
 	create_simple_action(app, "open-photos", G_CALLBACK(run_open_photos_action));
+	create_simple_action(app, "about", G_CALLBACK(run_about_action));
 	create_simple_action(app, "quit", G_CALLBACK(run_quit_action));
 
 	// Setup shortcuts