[libwnck/wip/warnings3: 2/12] util: avoid deprecated gtk_widget_override_font

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 9498e7afbd40548dc03dd47d74c610d5f4608746
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Apr 28 13:47:28 2017 +0300

    util: avoid deprecated gtk_widget_override_font
    
    This introduces new css class - wnck-needs-attention that theme
    authors can use to style label for windows that needs attention.
    
    By default label will be made bold.

 libwnck/Makefile.am        |    1 +
 libwnck/private.h          |    2 +
 libwnck/util.c             |   57 +++++++++++++++++++++++--------------------
 libwnck/wnck.css           |    3 ++
 libwnck/wnck.gresource.xml |    1 +
 5 files changed, 37 insertions(+), 27 deletions(-)
---
diff --git a/libwnck/Makefile.am b/libwnck/Makefile.am
index d293092..5c025cc 100644
--- a/libwnck/Makefile.am
+++ b/libwnck/Makefile.am
@@ -166,6 +166,7 @@ CLEANFILES =                        \
 
 EXTRA_DIST = \
        default_icon.png \
+       wnck.css \
        wnck.gresource.xml \
        version.h.in \
        $(NULL)
diff --git a/libwnck/private.h b/libwnck/private.h
index 3398d38..1122f34 100644
--- a/libwnck/private.h
+++ b/libwnck/private.h
@@ -147,6 +147,8 @@ void           _make_gtk_label_normal (GtkLabel *label);
 void           _wnck_selector_set_window_icon   (GtkWidget     *image,
                                                  WnckWindow    *window);
 
+void           _wnck_ensure_fallback_style      (void);
+
 G_END_DECLS
 
 #endif /* WNCK_PRIVATE_H */
diff --git a/libwnck/util.c b/libwnck/util.c
index e10086e..c19a85a 100644
--- a/libwnck/util.c
+++ b/libwnck/util.c
@@ -740,41 +740,21 @@ _wnck_get_default_mini_icon_size (void)
 void
 _make_gtk_label_bold (GtkLabel *label)
 {
-  PangoFontDescription *font_desc;
+  GtkStyleContext *context;
 
-  font_desc = pango_font_description_new ();
+  _wnck_ensure_fallback_style ();
 
-  pango_font_description_set_weight (font_desc,
-                                     PANGO_WEIGHT_BOLD);
-
-  /* This will only affect the weight of the font, the rest is
-   * from the current state of the widget, which comes from the
-   * theme or user prefs, since the font desc only has the
-   * weight flag turned on.
-   */
-  gtk_widget_override_font (GTK_WIDGET (label), font_desc);
-
-  pango_font_description_free (font_desc);
+  context = gtk_widget_get_style_context (GTK_WIDGET (label));
+  gtk_style_context_add_class (context, "wnck-needs-attention");
 }
 
 void
 _make_gtk_label_normal (GtkLabel *label)
 {
-  PangoFontDescription *font_desc;
-
-  font_desc = pango_font_description_new ();
-
-  pango_font_description_set_weight (font_desc,
-                                     PANGO_WEIGHT_NORMAL);
+  GtkStyleContext *context;
 
-  /* This will only affect the weight of the font, the rest is
-   * from the current state of the widget, which comes from the
-   * theme or user prefs, since the font desc only has the
-   * weight flag turned on.
-   */
-  gtk_widget_override_font (GTK_WIDGET (label), font_desc);
-
-  pango_font_description_free (font_desc);
+  context = gtk_widget_get_style_context (GTK_WIDGET (label));
+  gtk_style_context_remove_class (context, "wnck-needs-attention");
 }
 
 #ifdef HAVE_STARTUP_NOTIFICATION
@@ -867,3 +847,26 @@ wnck_shutdown (void)
   wnck_pid_read_resource_usage_destroy_hash_table (NULL);
 #endif
 }
+
+void
+_wnck_ensure_fallback_style (void)
+{
+  static gboolean css_loaded = FALSE;
+  GtkCssProvider *provider;
+  guint priority;
+
+  if (css_loaded)
+    return;
+
+  provider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_resource (provider, "/org/gnome/libwnck/wnck.css");
+
+  priority = GTK_STYLE_PROVIDER_PRIORITY_FALLBACK;
+  gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
+                                             GTK_STYLE_PROVIDER (provider),
+                                             priority);
+
+  g_object_unref (provider);
+
+  css_loaded = TRUE;
+}
diff --git a/libwnck/wnck.css b/libwnck/wnck.css
new file mode 100644
index 0000000..9e658b1
--- /dev/null
+++ b/libwnck/wnck.css
@@ -0,0 +1,3 @@
+.wnck-needs-attention {
+  font-weight: bold;
+}
diff --git a/libwnck/wnck.gresource.xml b/libwnck/wnck.gresource.xml
index a1eb536..2dd9737 100644
--- a/libwnck/wnck.gresource.xml
+++ b/libwnck/wnck.gresource.xml
@@ -2,5 +2,6 @@
 <gresources>
   <gresource prefix="/org/gnome/libwnck">
     <file>default_icon.png</file>
+    <file>wnck.css</file>
   </gresource>
 </gresources>