[evolution/gnome-3-18] Read link/visited-link colors also from the style context flags

[Milan Crha <mcrha src gnome org>]

commit 7a5d82272881472f471bac14074757b792a3cb36
Author: Milan Crha <mcrha redhat com>
Date:   Fri Nov 13 15:32:09 2015 +0100

    Read link/visited-link colors also from the style context flags
    
    The flags are available since Gtk 3.12. In case the theme switched
    to provide these colors exclusively through the flags the default
    colors were used, which might not be good for the current theme.

 e-util/e-html-editor-view.c |   14 ++++++++++----
 e-util/e-web-view.c         |   30 ++++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 4 deletions(-)
---
diff --git a/e-util/e-html-editor-view.c b/e-util/e-html-editor-view.c
index 2988943..313fa96 100644
--- a/e-util/e-html-editor-view.c
+++ b/e-util/e-html-editor-view.c
@@ -10316,18 +10316,24 @@ get_color_from_context (GtkStyleContext *context,
        gtk_style_context_get_style (context, name, &color, NULL);
 
        if (color == NULL) {
+               gboolean is_visited = strstr (name, "visited") != NULL;
+
                out_color->alpha = 1;
-               out_color->red = strstr (name, "visited") ? 1 : 0;
+               out_color->red = is_visited ? 1 : 0;
                out_color->green = 0;
-               out_color->blue = strstr (name, "visited") ? 0 : 1;
+               out_color->blue = is_visited ? 0 : 1;
+
+               #if GTK_CHECK_VERSION(3,12,0)
+               gtk_style_context_get_color (context, is_visited ? GTK_STATE_FLAG_VISITED : 
GTK_STATE_FLAG_LINK, out_color);
+               #endif
        } else {
                out_color->alpha = 1;
                out_color->red = ((gdouble) color->red) / G_MAXUINT16;
                out_color->green = ((gdouble) color->green) / G_MAXUINT16;
                out_color->blue = ((gdouble) color->blue) / G_MAXUINT16;
-       }
 
-       gdk_color_free (color);
+               gdk_color_free (color);
+       }
 }
 
 static void
diff --git a/e-util/e-web-view.c b/e-util/e-web-view.c
index 8d91ff1..e42b018 100644
--- a/e-util/e-web-view.c
+++ b/e-util/e-web-view.c
@@ -2811,13 +2811,43 @@ e_web_view_update_fonts (EWebView *web_view)
                NULL);
 
        if (link == NULL) {
+               #if GTK_CHECK_VERSION(3,12,0)
+               GdkRGBA rgba;
+               #endif
+
                link = g_slice_new0 (GdkColor);
                link->blue = G_MAXINT16;
+
+               #if GTK_CHECK_VERSION(3,12,0)
+               rgba.alpha = 1;
+               rgba.red = 0;
+               rgba.green = 0;
+               rgba.blue = 1;
+
+               gtk_style_context_get_color (context, GTK_STATE_FLAG_LINK, &rgba);
+
+               e_rgba_to_color (&rgba, link);
+               #endif
        }
 
        if (visited == NULL) {
+               #if GTK_CHECK_VERSION(3,12,0)
+               GdkRGBA rgba;
+               #endif
+
                visited = g_slice_new0 (GdkColor);
                visited->red = G_MAXINT16;
+
+               #if GTK_CHECK_VERSION(3,12,0)
+               rgba.alpha = 1;
+               rgba.red = 1;
+               rgba.green = 0;
+               rgba.blue = 0;
+
+               gtk_style_context_get_color (context, GTK_STATE_FLAG_VISITED, &rgba);
+
+               e_rgba_to_color (&rgba, visited);
+               #endif
        }
 
        g_string_append_printf (