[balsa/gtk3] Deprecation cleanup

[Peter Bloomfield <peterb src gnome org>]

commit 4bdb85db1892ac038830634ffbb3e7331a15fa04
Author: Peter Bloomfield <PeterBloomfield bellsouth net>
Date:   Tue Feb 10 17:22:47 2015 -0500

    Deprecation cleanup
    
        * libbalsa/source-viewer.c (libbalsa_show_message_source):
        gtk_widget_override_font is deprecated, use CSS instead.

 ChangeLog                |    7 +++++++
 libbalsa/source-viewer.c |   19 +++++++++++++++----
 2 files changed, 22 insertions(+), 4 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 8f146a0..bfa1974 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2015-02-10  Peter Bloomfield  <pbloomfield bellsouth net>
+
+       Deprecation cleanup
+
+       * libbalsa/source-viewer.c (libbalsa_show_message_source):
+       gtk_widget_override_font is deprecated, use CSS instead.
+
 2015-02-08  Peter Bloomfield  <pbloomfield bellsouth net>
 
        * src/main-window.c (balsa_window_new): vertically center the
diff --git a/libbalsa/source-viewer.c b/libbalsa/source-viewer.c
index 7c3bf2b..9b85892 100644
--- a/libbalsa/source-viewer.c
+++ b/libbalsa/source-viewer.c
@@ -184,6 +184,8 @@ lsv_size_allocate_cb(GtkWindow * window, GtkAllocation * alloc,
     }
 }
 
+#define BALSA_SOURCE_VIEWER "balsa-source-viewer"
+
 void
 libbalsa_show_message_source(GtkApplication  * application,
                              LibBalsaMessage * msg,
@@ -193,7 +195,8 @@ libbalsa_show_message_source(GtkApplication  * application,
                              gint            * height)
 {
     GtkWidget *text;
-    PangoFontDescription *desc;
+    gchar *css;
+    GtkCssProvider *css_provider;
     GtkWidget *vbox, *interior;
     GtkWidget *window;
     gchar *ui_file;
@@ -207,9 +210,17 @@ libbalsa_show_message_source(GtkApplication  * application,
 
     text = gtk_text_view_new();
 
-    desc = pango_font_description_from_string(font);
-    gtk_widget_override_font(text, desc);
-    pango_font_description_free(desc);
+    gtk_widget_set_name(text, BALSA_SOURCE_VIEWER);
+    css = g_strconcat("#" BALSA_SOURCE_VIEWER " {font:", font, "}", NULL);
+
+    css_provider = gtk_css_provider_new();
+    gtk_css_provider_load_from_data(css_provider, css, -1, NULL);
+    g_free(css);
+
+    gtk_style_context_add_provider(gtk_widget_get_style_context(text) ,
+                                   GTK_STYLE_PROVIDER(css_provider),
+                                   GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
+    g_object_unref(css_provider);
 
     gtk_text_view_set_editable(GTK_TEXT_VIEW(text), FALSE);
     gtk_text_view_set_wrap_mode(GTK_TEXT_VIEW(text), GTK_WRAP_WORD_CHAR);