[evolution] [CamelGpgContext] Provide signer photos when available

[Milan Crha <mcrha src gnome org>]

commit c2694d8b02ecfe8b8a3aa112f42dc0a707f4eed3
Author: Milan Crha <mcrha redhat com>
Date:   Thu May 26 18:25:26 2016 +0200

    [CamelGpgContext] Provide signer photos when available

 em-format/e-mail-formatter-secure-button.c |   50 ++++++++++++++++++++++++++++
 1 files changed, 50 insertions(+), 0 deletions(-)
---
diff --git a/em-format/e-mail-formatter-secure-button.c b/em-format/e-mail-formatter-secure-button.c
index 0ed0ef4..1611d44 100644
--- a/em-format/e-mail-formatter-secure-button.c
+++ b/em-format/e-mail-formatter-secure-button.c
@@ -361,6 +361,53 @@ secure_button_clicked_cb (GtkWidget *widget,
        gtk_widget_show (dialog);
 }
 
+static void
+add_photo_cb (gpointer data,
+             gpointer user_data)
+{
+       CamelCipherCertInfo *cert_info = data;
+       gint width, height;
+       GtkWidget *image;
+       GdkPixbuf *pixbuf, *scaled;
+       GtkBox *box = user_data;
+       const gchar *photo_filename;
+
+       g_return_if_fail (cert_info != NULL);
+       g_return_if_fail (GTK_IS_BOX (box));
+
+       photo_filename = camel_cipher_certinfo_get_property (cert_info, 
CAMEL_CIPHER_CERT_INFO_PROPERTY_PHOTO_FILENAME);
+       if (!photo_filename || !g_file_test (photo_filename, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_REGULAR))
+               return;
+
+       pixbuf = gdk_pixbuf_new_from_file (photo_filename, NULL);
+       if (!pixbuf)
+               return;
+
+       if (!gtk_icon_size_lookup (GTK_ICON_SIZE_DND, &width, &height)) {
+               width = 32;
+               height = 32;
+       }
+
+       if (width < 32)
+               width = 32;
+       if (height < 32)
+               height = 32;
+
+       scaled = e_icon_factory_pixbuf_scale (pixbuf, width, height);
+       g_object_unref (pixbuf);
+
+       if (!scaled)
+               return;
+
+       image = gtk_image_new_from_pixbuf (scaled);
+       g_object_unref (scaled);
+
+       if (!image)
+               return;
+
+       gtk_box_pack_start (box, image, FALSE, FALSE, 0);
+}
+
 static GtkWidget *
 secure_button_get_widget_for_validity (CamelCipherValidity *validity)
 {
@@ -424,6 +471,9 @@ secure_button_get_widget_for_validity (CamelCipherValidity *validity)
                        icon_name, GTK_ICON_SIZE_LARGE_TOOLBAR);
        gtk_button_set_image (GTK_BUTTON (button), widget);
 
+       g_queue_foreach (&validity->sign.signers, add_photo_cb, layout);
+       g_queue_foreach (&validity->encrypt.encrypters, add_photo_cb, layout);
+
        widget = gtk_label_new (description);
        g_object_set (G_OBJECT (widget),
                "wrap", TRUE,