[empathy] Avoid warning spam from GtkStyleContext with GTK+ 3.19

[Michael Catanzaro <mcatanzaro src gnome org>]

commit bc7c5e9025ece52d2bf7c1a5bc1bed8a0214d90a
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Sat Jan 16 07:19:37 2016 -0600

    Avoid warning spam from GtkStyleContext with GTK+ 3.19
    
    Not *necessarily* the best fix, but let's avoid any behavior change.
    
    (lt-empathy-chat:21101): Gtk-WARNING **: State 0 for GtkBox 0x1d8e120
    doesn't match state 192 set via gtk_style_context_set_state ()
    
    (lt-empathy-chat:21101): Gtk-WARNING **: State 0 for GtkBox 0x1d8e120
    doesn't match state 192 set via gtk_style_context_set_state ()
    
    (lt-empathy-chat:21101): Gtk-WARNING **: State 0 for GtkBox 0x1d8e120
    doesn't match state 192 set via gtk_style_context_set_state ()
    
    (lt-empathy-chat:21101): Gtk-WARNING **: State 0 for GtkBox 0x1d8e120
    doesn't match state 192 set via gtk_style_context_set_state ()
    
    (lt-empathy-chat:21101): Gtk-WARNING **: State 0 for GtkBox 0x1d8e120
    doesn't match state 192 set via gtk_style_context_set_state ()

 libempathy-gtk/empathy-cell-renderer-text.c |    8 +++++++-
 libempathy-gtk/empathy-individual-view.c    |    3 +++
 src/empathy-chat-window.c                   |   15 ++++++++++-----
 3 files changed, 20 insertions(+), 6 deletions(-)
---
diff --git a/libempathy-gtk/empathy-cell-renderer-text.c b/libempathy-gtk/empathy-cell-renderer-text.c
index 5ce735f..ff663fd 100644
--- a/libempathy-gtk/empathy-cell-renderer-text.c
+++ b/libempathy-gtk/empathy-cell-renderer-text.c
@@ -330,9 +330,13 @@ cell_renderer_text_update_text (EmpathyCellRendererText *cell,
 
        attr_list = pango_attr_list_new ();
 
+       gtk_style_context_save (style);
+
+       gtk_style_context_set_state (style, GTK_STATE_FLAG_NORMAL);
        gtk_style_context_get (style, GTK_STATE_FLAG_NORMAL,
                "font", &font_desc,
                NULL);
+
        font_size = pango_font_description_get_size (font_desc);
        pango_font_description_free (font_desc);
        attr_size = pango_attr_size_new (font_size / 1.2);
@@ -343,7 +347,7 @@ cell_renderer_text_update_text (EmpathyCellRendererText *cell,
        if (!selected) {
                GdkRGBA color;
 
-               gtk_style_context_get_color (style, 0, &color);
+               gtk_style_context_get_color (style, GTK_STATE_FLAG_NORMAL, &color);
 
                attr_color = pango_attr_foreground_new (color.red * 0xffff,
                                                        color.green * 0xffff,
@@ -353,6 +357,8 @@ cell_renderer_text_update_text (EmpathyCellRendererText *cell,
                pango_attr_list_insert (attr_list, attr_color);
        }
 
+       gtk_style_context_restore (style);
+
        if (priv->compact) {
                if (TPAW_STR_EMPTY (priv->status)) {
                        str = g_strdup (priv->name);
diff --git a/libempathy-gtk/empathy-individual-view.c b/libempathy-gtk/empathy-individual-view.c
index 9e64f4b..b8ef8d1 100644
--- a/libempathy-gtk/empathy-individual-view.c
+++ b/libempathy-gtk/empathy-individual-view.c
@@ -1102,8 +1102,11 @@ individual_view_cell_set_background (EmpathyIndividualView *view,
 
       style = gtk_widget_get_style_context (GTK_WIDGET (view));
 
+      gtk_style_context_save (style);
+      gtk_style_context_set_state (style, GTK_STATE_FLAG_SELECTED);
       gtk_style_context_get_background_color (style, GTK_STATE_FLAG_SELECTED,
           &color);
+      gtk_style_context_restore (style);
 
       /* Here we take the current theme colour and add it to
        * the colour for white and average the two. This
diff --git a/src/empathy-chat-window.c b/src/empathy-chat-window.c
index b496356..ba23b74 100644
--- a/src/empathy-chat-window.c
+++ b/src/empathy-chat-window.c
@@ -380,21 +380,26 @@ chat_tab_style_updated_cb (GtkWidget *hbox,
 {
   GtkWidget *button;
   int char_width, h, w;
-  PangoContext *context;
+  GtkStyleContext *style_context;
+  PangoContext *pango_context;
   PangoFontDescription *font_desc;
   PangoFontMetrics *metrics;
 
   button = g_object_get_data (G_OBJECT (user_data),
     "chat-window-tab-close-button");
-  context = gtk_widget_get_pango_context (hbox);
+  style_context = gtk_widget_get_style_context (hbox);
+  pango_context = gtk_widget_get_pango_context (hbox);
 
-  gtk_style_context_get (gtk_widget_get_style_context (hbox),
+  gtk_style_context_save (style_context);
+  gtk_style_context_set_state (style_context, GTK_STATE_FLAG_NORMAL);
+  gtk_style_context_get (style_context,
       GTK_STATE_FLAG_NORMAL,
       "font", &font_desc,
       NULL);
+  gtk_style_context_restore (style_context);
 
-  metrics = pango_context_get_metrics (context, font_desc,
-    pango_context_get_language (context));
+  metrics = pango_context_get_metrics (pango_context, font_desc,
+    pango_context_get_language (pango_context));
   char_width = pango_font_metrics_get_approximate_char_width (metrics);
   pango_font_metrics_unref (metrics);