[gtk+] gtk3-demo: Don't use deprecated API

[Matthias Clasen <matthiasc src gnome org>]

commit d120346992ca7d7cf1a775935e15a85614671541
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Oct 7 00:45:59 2014 -0400

    gtk3-demo: Don't use deprecated API
    
    Replace various override calls.

 demos/gtk-demo/main.c             |   18 +++++-------------
 demos/gtk-demo/offscreen_window.c |    3 ---
 demos/gtk-demo/rotated_text.c     |    9 ++-------
 3 files changed, 7 insertions(+), 23 deletions(-)
---
diff --git a/demos/gtk-demo/main.c b/demos/gtk-demo/main.c
index ff79139..6018126 100644
--- a/demos/gtk-demo/main.c
+++ b/demos/gtk-demo/main.c
@@ -821,7 +821,6 @@ create_text (GtkWidget **view,
 {
   GtkWidget *scrolled_window;
   GtkWidget *text_view;
-  PangoFontDescription *font_desc;
 
   scrolled_window = gtk_scrolled_window_new (NULL, NULL);
   gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
@@ -840,22 +839,15 @@ create_text (GtkWidget **view,
 
   if (is_source)
     {
-      font_desc = pango_font_description_from_string ("monospace");
-      gtk_widget_override_font (text_view, font_desc);
-      pango_font_description_free (font_desc);
-
-      gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
-                                   GTK_WRAP_NONE);
+      gtk_text_view_set_monospace (GTK_TEXT_VIEW (text_view), TRUE);
+      gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view), GTK_WRAP_NONE);
     }
   else
     {
       /* Make it a bit nicer for text. */
-      gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view),
-                                   GTK_WRAP_WORD);
-      gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (text_view),
-                                            2);
-      gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (text_view),
-                                            2);
+      gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (text_view), GTK_WRAP_WORD);
+      gtk_text_view_set_pixels_above_lines (GTK_TEXT_VIEW (text_view), 2);
+      gtk_text_view_set_pixels_below_lines (GTK_TEXT_VIEW (text_view), 2);
     }
 
   return scrolled_window;
diff --git a/demos/gtk-demo/offscreen_window.c b/demos/gtk-demo/offscreen_window.c
index ee542b3..9109e27 100644
--- a/demos/gtk-demo/offscreen_window.c
+++ b/demos/gtk-demo/offscreen_window.c
@@ -573,7 +573,6 @@ do_offscreen_window (GtkWidget *do_widget)
   if (!window)
     {
       GtkWidget *bin, *vbox, *scale, *button;
-      GdkRGBA black;
 
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
       gtk_window_set_screen (GTK_WINDOW (window),
@@ -583,8 +582,6 @@ do_offscreen_window (GtkWidget *do_widget)
       g_signal_connect (window, "destroy",
                         G_CALLBACK (gtk_widget_destroyed), &window);
 
-      gdk_rgba_parse (&black, "black");
-      gtk_widget_override_background_color (window, 0, &black);
       gtk_container_set_border_width (GTK_CONTAINER (window), 10);
 
       vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
diff --git a/demos/gtk-demo/rotated_text.c b/demos/gtk-demo/rotated_text.c
index c83030f..8b4ecb2 100644
--- a/demos/gtk-demo/rotated_text.c
+++ b/demos/gtk-demo/rotated_text.c
@@ -181,8 +181,6 @@ do_rotated_text (GtkWidget *do_widget)
       PangoLayout *layout;
       PangoAttrList *attrs;
 
-      const GdkRGBA white = { 1.0, 1.0, 1.0, 1.0 };
-
       window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
       gtk_window_set_screen (GTK_WINDOW (window),
                              gtk_widget_get_screen (do_widget));
@@ -195,18 +193,15 @@ do_rotated_text (GtkWidget *do_widget)
       gtk_container_add (GTK_CONTAINER (window), box);
 
       /* Add a drawing area */
-
       drawing_area = gtk_drawing_area_new ();
       gtk_container_add (GTK_CONTAINER (box), drawing_area);
-
-      /* This overrides the background color from the theme */
-      gtk_widget_override_background_color (drawing_area, 0, &white);
+      gtk_style_context_add_class (gtk_widget_get_style_context (drawing_area),
+                                   GTK_STYLE_CLASS_VIEW);
 
       g_signal_connect (drawing_area, "draw",
                         G_CALLBACK (rotated_text_draw), NULL);
 
       /* And a label */
-
       label = gtk_label_new (text);
       gtk_container_add (GTK_CONTAINER (box), label);