[gtk+] demo: use the installed named icon

[William Jon McCann <mccann src gnome org>]

commit cdc2f07a1efa7a23878bf5cf6d8dca4170ffc561
Author: William Jon McCann <william jon mccann gmail com>
Date:   Tue Nov 5 15:29:54 2013 -0500

    demo: use the installed named icon

 demos/gtk-demo/Makefile.am        |    3 ---
 demos/gtk-demo/application.c      |    6 +-----
 demos/gtk-demo/demo.gresource.xml |    5 -----
 demos/gtk-demo/gtk-logo-24.png    |  Bin 674 -> 0 bytes
 demos/gtk-demo/gtk-logo-48.png    |  Bin 2405 -> 0 bytes
 demos/gtk-demo/gtk-logo-old.png   |  Bin 5895 -> 0 bytes
 demos/gtk-demo/images.c           |    7 +------
 demos/gtk-demo/listbox.c          |    4 +---
 demos/gtk-demo/main.c             |   16 +---------------
 demos/gtk-demo/stack.ui           |    2 +-
 demos/gtk-demo/textview.c         |   15 ++++++++-------
 11 files changed, 13 insertions(+), 45 deletions(-)
---
diff --git a/demos/gtk-demo/Makefile.am b/demos/gtk-demo/Makefile.am
index 3cc92d6..cbfabeb 100644
--- a/demos/gtk-demo/Makefile.am
+++ b/demos/gtk-demo/Makefile.am
@@ -134,9 +134,6 @@ RESOURCES=  $(demos)                        \
                gnome-gmush.png                 \
                gnome-gsame.png                 \
                gnu-keys.png                    \
-               gtk-logo-24.png                 \
-               gtk-logo-48.png                 \
-               gtk-logo-old.png                \
                messages.txt                    \
                css_accordion.css               \
                css_basics.css                  \
diff --git a/demos/gtk-demo/application.c b/demos/gtk-demo/application.c
index 048535a..d250586 100644
--- a/demos/gtk-demo/application.c
+++ b/demos/gtk-demo/application.c
@@ -95,7 +95,6 @@ activate_about (GSimpleAction *action,
                 gpointer       user_data)
 {
   GtkWidget *window = user_data;
-  GdkPixbuf *pixbuf;
 
   const gchar *authors[] = {
     "Peter Mattis",
@@ -113,8 +112,6 @@ activate_about (GSimpleAction *action,
     NULL
   };
 
-  pixbuf = gdk_pixbuf_new_from_resource ("/application/gtk-logo-48.png", NULL);
-
   gtk_show_about_dialog (GTK_WINDOW (window),
                          "program-name", "GTK+ Code Demos",
                          "version", g_strdup_printf ("%s,\nRunning against GTK+ %d.%d.%d",
@@ -128,10 +125,9 @@ activate_about (GSimpleAction *action,
                          "comments", "Program to demonstrate GTK+ functions.",
                          "authors", authors,
                          "documenters", documentors,
-                         "logo", pixbuf,
+                         "logo-icon-name", "gtk3-demo",
                          "title", "About GTK+ Code Demos",
                          NULL);
-  g_object_unref (pixbuf);
 }
 
 static void
diff --git a/demos/gtk-demo/demo.gresource.xml b/demos/gtk-demo/demo.gresource.xml
index 66a65c4..f856681 100644
--- a/demos/gtk-demo/demo.gresource.xml
+++ b/demos/gtk-demo/demo.gresource.xml
@@ -1,8 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <gresources>
   <gresource prefix="/application">
-    <file preprocess="to-pixdata">gtk-logo-24.png</file>
-    <file preprocess="to-pixdata">gtk-logo-48.png</file>
     <file>application.ui</file>
     <file>menus.ui</file>
   </gresource>
@@ -59,7 +57,6 @@
   <gresource prefix="/images">
     <file>alphatest.png</file>
     <file>floppybuddy.gif</file>
-    <file>gtk-logo-old.png</file>
   </gresource>
   <gresource prefix="/pixbufs">
     <file>apple-red.png</file>
@@ -125,12 +122,10 @@
   </gresource>
   <gresource prefix="/textview">
     <file>floppybuddy.gif</file>
-    <file>gtk-logo-old.png</file>
   </gresource>
   <gresource prefix="/listbox">
     <file>listbox.ui</file>
     <file>messages.txt</file>
-    <file>gtk-logo-48.png</file>
     <file>apple-red.png</file>
   </gresource>
 </gresources>
diff --git a/demos/gtk-demo/images.c b/demos/gtk-demo/images.c
index 4065ee5..ef1386b 100644
--- a/demos/gtk-demo/images.c
+++ b/demos/gtk-demo/images.c
@@ -329,7 +329,6 @@ do_images (GtkWidget *do_widget)
   GtkWidget *image;
   GtkWidget *label;
   GtkWidget *button;
-  GdkPixbuf *pixbuf;
   GIcon     *gicon;
 
   if (!window)
@@ -361,11 +360,7 @@ do_images (GtkWidget *do_widget)
       gtk_widget_set_valign (frame, GTK_ALIGN_CENTER);
       gtk_box_pack_start (GTK_BOX (vbox), frame, FALSE, FALSE, 0);
 
-      pixbuf = gdk_pixbuf_new_from_resource ("/images/gtk-logo-old.png", NULL);
-      /* The image loading must work, we ensure that the resources are valid. */
-      g_assert (pixbuf);
-
-      image = gtk_image_new_from_pixbuf (pixbuf);
+      image = gtk_image_new_from_icon_name ("gtk3-demo", GTK_ICON_SIZE_DIALOG);
 
       gtk_container_add (GTK_CONTAINER (frame), image);
 
diff --git a/demos/gtk-demo/listbox.c b/demos/gtk-demo/listbox.c
index e58ba4e..3941f2d 100644
--- a/demos/gtk-demo/listbox.c
+++ b/demos/gtk-demo/listbox.c
@@ -9,7 +9,6 @@
 #include <stdlib.h>
 #include <string.h>
 
-static GdkPixbuf *avatar_pixbuf_gtk;
 static GdkPixbuf *avatar_pixbuf_other;
 static GtkWidget *window = NULL;
 
@@ -183,7 +182,7 @@ gtk_message_row_update (GtkMessageRow *row)
     gtk_button_set_label (GTK_BUTTON (priv->resent_by_button), priv->message->resent_by);
 
   if (strcmp (priv->message->sender_nick, "@GTKtoolkit") == 0)
-    gtk_image_set_from_pixbuf (priv->avatar_image, avatar_pixbuf_gtk);
+    gtk_image_set_from_icon_name (priv->avatar_image, "gtk3-demo", GTK_ICON_SIZE_DND);
   else
     gtk_image_set_from_pixbuf (priv->avatar_image, avatar_pixbuf_other);
 
@@ -317,7 +316,6 @@ do_listbox (GtkWidget *do_widget)
 
   if (!window)
     {
-      avatar_pixbuf_gtk = gdk_pixbuf_new_from_resource_at_scale ("/listbox/gtk-logo-48.png", 32, 32, FALSE, 
NULL);
       avatar_pixbuf_other = gdk_pixbuf_new_from_resource_at_scale ("/listbox/apple-red.png", 32, 32, FALSE, 
NULL);
 
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
diff --git a/demos/gtk-demo/main.c b/demos/gtk-demo/main.c
index cb9a1a6..19b2dd7 100644
--- a/demos/gtk-demo/main.c
+++ b/demos/gtk-demo/main.c
@@ -882,20 +882,6 @@ create_tree (void)
   return box;
 }
 
-static void
-setup_default_icon (void)
-{
-  GdkPixbuf *pixbuf;
-
-  pixbuf = gdk_pixbuf_new_from_resource ("/application/gtk-logo-48.png", NULL);
-  /* We load a resource, so we can guarantee that loading it is successful */
-  g_assert (pixbuf);
-
-  gtk_window_set_default_icon (pixbuf);
-  
-  g_object_unref (pixbuf);
-}
-
 int
 main (int argc, char **argv)
 {
@@ -915,7 +901,7 @@ main (int argc, char **argv)
 
   gtk_init (&argc, &argv);
 
-  setup_default_icon ();
+  gtk_window_set_default_icon_name ("gtk3-demo");
 
   window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
   gtk_window_set_title (GTK_WINDOW (window), "GTK+ Code Demos");
diff --git a/demos/gtk-demo/stack.ui b/demos/gtk-demo/stack.ui
index d400dc1..334c145 100644
--- a/demos/gtk-demo/stack.ui
+++ b/demos/gtk-demo/stack.ui
@@ -32,7 +32,7 @@
                 <property name="can_focus">False</property>
                 <property name="margin-top">20</property>
                 <property name="margin-bottom">20</property>
-                <property name="resource">/application/gtk-logo-48.png</property>
+                <property name="icon-name">gtk3-demo</property>
               </object>
               <packing>
                 <property name="name">page1</property>
diff --git a/demos/gtk-demo/textview.c b/demos/gtk-demo/textview.c
index 2bb6e28..775ede6 100644
--- a/demos/gtk-demo/textview.c
+++ b/demos/gtk-demo/textview.c
@@ -129,15 +129,16 @@ insert_text (GtkTextBuffer *buffer)
   GtkTextIter iter;
   GtkTextIter start, end;
   GdkPixbuf *pixbuf;
-  GdkPixbuf *scaled;
-
-  pixbuf = gdk_pixbuf_new_from_resource ("/textview/gtk-logo-old.png", NULL);
+  GtkIconTheme *icon_theme;
+
+  icon_theme = gtk_icon_theme_get_default ();
+  pixbuf = gtk_icon_theme_load_icon (icon_theme,
+                                     "gtk3-demo",
+                                     32,
+                                     GTK_ICON_LOOKUP_GENERIC_FALLBACK,
+                                     NULL);
   g_assert (pixbuf);
 
-  scaled = gdk_pixbuf_scale_simple (pixbuf, 32, 32, GDK_INTERP_BILINEAR);
-  g_object_unref (pixbuf);
-  pixbuf = scaled;
-
   /* get start of buffer; each insertion will revalidate the
    * iterator to point to just after the inserted text.
    */