[gtk/matthiasc/for-master] node-editor: Add a gear menu

[Matthias Clasen <matthiasc src gnome org>]

commit fd5945cdfe243446ae91ad3708f817abb22d8fea
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jun 28 23:43:13 2020 -0400

    node-editor: Add a gear menu
    
    Add a gear menu with Inspector and About menu items.

 demos/node-editor/node-editor-application.c | 76 +++++++++++++++++++++++++++--
 demos/node-editor/node-editor-window.ui     | 20 ++++++++
 2 files changed, 93 insertions(+), 3 deletions(-)
---
diff --git a/demos/node-editor/node-editor-application.c b/demos/node-editor/node-editor-application.c
index fd80787ce2..dd55284ca3 100644
--- a/demos/node-editor/node-editor-application.c
+++ b/demos/node-editor/node-editor-application.c
@@ -51,16 +51,86 @@ node_editor_application_init (NodeEditorApplication *app)
 }
 
 static void
-quit_activated (GSimpleAction *action,
+activate_about (GSimpleAction *action,
                 GVariant      *parameter,
-                gpointer       data)
+                gpointer       user_data)
+{
+  GtkApplication *app = user_data;
+  char *version;
+  GString *s;
+  GskRenderer *gsk_renderer;
+  const char *renderer;
+
+  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 ());
+
+  gsk_renderer = gtk_native_get_renderer (GTK_NATIVE (gtk_application_get_active_window (app)));
+  if (strcmp (G_OBJECT_TYPE_NAME (gsk_renderer), "GskVulkanRenderer") == 0)
+    renderer = "Vulkan";
+  else if (strcmp (G_OBJECT_TYPE_NAME (gsk_renderer), "GskGLRenderer") == 0)
+    renderer = "OpenGL";
+  else if (strcmp (G_OBJECT_TYPE_NAME (gsk_renderer), "GskCairoRenderer") == 0)
+    renderer = "Cairo";
+  else
+    renderer = "Unknown";
+
+  g_string_append_printf (s, "\nRenderer\n\t%s", renderer);
+
+  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 Node Editor",
+                         "version", version,
+                         "copyright", "© 2019—2020 The GTK Team",
+                         "license-type", GTK_LICENSE_LGPL_2_1,
+                         "website", "http://www.gtk.org";,
+                         "comments", "Program to test GTK rendering",
+                         "authors", (const char *[]){ "Benjamin Otte", "Timm Bäder", NULL},
+                         "logo-icon-name", "text-editor-symbolic",
+                         "title", "About GTK Node Editor",
+                         "system-information", s->str,
+                         NULL);
+
+  g_string_free (s, TRUE);
+  g_free (version);
+}
+
+static void
+activate_quit (GSimpleAction *action,
+               GVariant      *parameter,
+               gpointer       data)
 {
   g_application_quit (G_APPLICATION (data));
 }
 
+static void
+activate_inspector (GSimpleAction *action,
+                    GVariant      *parameter,
+                    gpointer       user_data)
+{
+  gtk_window_set_interactive_debugging (TRUE);
+}
+
 static GActionEntry app_entries[] =
 {
-  { "quit", quit_activated, NULL, NULL, NULL }
+  { "about", activate_about, NULL, NULL, NULL },
+  { "quit", activate_quit, NULL, NULL, NULL },
+  { "inspector", activate_inspector, NULL, NULL, NULL },
 };
 
 static void
diff --git a/demos/node-editor/node-editor-window.ui b/demos/node-editor/node-editor-window.ui
index 835b154ec6..1b49269ab1 100644
--- a/demos/node-editor/node-editor-window.ui
+++ b/demos/node-editor/node-editor-window.ui
@@ -1,5 +1,18 @@
 <?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 Node Editor</attribute>
+        <attribute name="action">app.about</attribute>
+      </item>
+    </section>
+  </menu>
+
   <object class="GtkPopover" id="testcase_popover">
     <child>
       <object class="GtkGrid">
@@ -119,6 +132,13 @@
             <property name="popover">testcase_popover</property>
           </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>
       </object>
     </child>
     <child>