[gtk/matthiasc/for-master] icon-browser: Add a gear menu

[Matthias Clasen <matthiasc src gnome org>]

commit 91c7b24815f9a3eee6856f44c2565da0c5cdf278
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Apr 26 21:59:28 2020 -0400

    icon-browser: Add a gear menu
    
    Add an about dialog, and make the inspector available.

 demos/icon-browser/iconbrowserapp.c | 69 ++++++++++++++++++++++++++++++++++++-
 demos/icon-browser/window.ui        | 19 ++++++++++
 2 files changed, 87 insertions(+), 1 deletion(-)
---
diff --git a/demos/icon-browser/iconbrowserapp.c b/demos/icon-browser/iconbrowserapp.c
index 8c7591fc1a..f5b7c76844 100644
--- a/demos/icon-browser/iconbrowserapp.c
+++ b/demos/icon-browser/iconbrowserapp.c
@@ -1,3 +1,4 @@
+#include "config.h"
 #include <gtk/gtk.h>
 
 #include "iconbrowserapp.h"
@@ -28,9 +29,75 @@ quit_activated (GSimpleAction *action,
   g_application_quit (G_APPLICATION (app));
 }
 
+static void
+inspector_activated (GSimpleAction *action,
+                     GVariant      *parameter,
+                     gpointer       app)
+{
+  gtk_window_set_interactive_debugging (TRUE);
+}
+
+static void
+about_activated (GSimpleAction *action,
+                 GVariant      *parameter,
+                 gpointer       user_data)
+{
+  GtkApplication *app = user_data;
+  const gchar *authors[] = {
+    "The GTK Team",
+    NULL
+  };
+  char *icon_theme;
+  char *version;
+  GString *s;
+
+  g_object_get (gtk_settings_get_default (),
+                "gtk-icon-theme-name", &icon_theme,
+                NULL);
+
+  s = g_string_new ("");
+
+  g_string_append (s, "System libraries\n");
+  g_string_append_printf (s, "\tGLib\t%d.%d.%d\n",
+                          glib_major_version,
+                          glib_minor_version,
+                          glib_micro_version);
+  g_string_append_printf (s, "\tPango\t%s\n",
+                          pango_version_string ());
+  g_string_append_printf (s, "\tGTK\t%d.%d.%d\n",
+                          gtk_get_major_version (),
+                          gtk_get_minor_version (),
+                          gtk_get_micro_version ());
+  g_string_append_printf (s, "\nIcon theme\n\t%s", icon_theme);
+  version = g_strdup_printf ("%s\nRunning against GTK %d.%d.%d",
+                             PACKAGE_VERSION,
+                             gtk_get_major_version (),
+                             gtk_get_minor_version (),
+                             gtk_get_micro_version ());
+
+  gtk_show_about_dialog (GTK_WINDOW (gtk_application_get_active_window (app)),
+                         "program-name", "GTK Icon Browser",
+                         "version", version,
+                         "copyright", "© 1997—2020 The GTK Team",
+                         "license-type", GTK_LICENSE_LGPL_2_1,
+                         "website", "http://www.gtk.org";,
+                         "comments", "Program to browse themed icons",
+                         "authors", authors,
+                         "logo-icon-name", "org.gtk.Demo4",
+                         "title", "About GTK Icon Browser",
+                         "system-information", s->str,
+                         NULL);
+
+  g_string_free (s, TRUE);
+  g_free (version);
+  g_free (icon_theme);
+}
+
 static GActionEntry app_entries[] =
 {
-  { "quit", quit_activated, NULL, NULL, NULL }
+  { "quit", quit_activated, NULL, NULL, NULL },
+  { "inspector", inspector_activated, NULL, NULL, NULL },
+  { "about", about_activated, NULL, NULL, NULL }
 };
 
 static void
diff --git a/demos/icon-browser/window.ui b/demos/icon-browser/window.ui
index 16707599ba..ffe6612f32 100644
--- a/demos/icon-browser/window.ui
+++ b/demos/icon-browser/window.ui
@@ -1,5 +1,17 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <interface>
+  <menu id="gear_menu">
+    <section>
+      <item>
+        <attribute name="label" translatable="yes">_Inspector</attribute>
+        <attribute name="action">app.inspector</attribute>
+      </item>
+      <item>
+        <attribute name="label" translatable="yes">_About GTK Icon Browser</attribute>
+        <attribute name="action">app.about</attribute>
+      </item>
+    </section>
+  </menu>
   <object class="IconStore" id="store"/>
   <object class="GtkTreeModelFilter" id="filter_model">
     <property name="child-model">store</property>
@@ -36,6 +48,13 @@
             </child>
           </object>
         </child>
+        <child type="end">
+          <object class="GtkMenuButton" id="gear_menu_button">
+            <property name="valign">center</property>
+            <property name="menu-model">gear_menu</property>
+            <property name="icon-name">open-menu-symbolic</property>
+          </object>
+        </child>
         <child type="end">
           <object class="GtkToggleButton" id="search">
             <style>