1 files changed, 131 insertions, 105 deletions

diff --git a/src/setup/gnunet-setup-gns.c b/src/setup/gnunet-setup-gns.c
index f141d156..8e70f21e 100644
--- a/src/setup/gnunet-setup-gns.c
+++ b/src/setup/gnunet-setup-gns.c
@@ -61,7 +61,7 @@
 #define PSEU_EMPTY_STR gettext_noop ("<not set>")
 
 /**
- * Height and width of the QR code
+ * Height and width of the QR code we display
  */
 #define QRCODE_IMAGE_SIZE 64
 
@@ -219,6 +219,123 @@ static struct GNUNET_CRYPTO_ShortHashCode zone;
 static int iteration;
 
 
+#if HAVE_QRENCODE_H
+#include <qrencode.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+/**
+ * Create the QR code image for our zone.
+ *
+ * @param size height and width of the image to create
+ * @return NULL on error
+ */
+static GdkPixbuf *
+create_qrcode (unsigned int size)
+{
+  QRinput * qri;
+  QRcode *qrc;
+  char *str;
+  const gchar * pseu;
+  GtkEntry * entry;
+  GdkPixbuf *pb;
+  unsigned int x;
+  unsigned int y;
+  unsigned int off;
+  guchar *pixels;
+  int n_channels;
+  int c;
+  const char *dir;
+  char *fn;
+
+  qri = QRinput_new2 (0, QR_ECLEVEL_Q);
+  if (NULL == qri)
+  {
+    GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "QRinput_new2");
+    return NULL;
+  }
+  entry = GTK_ENTRY (GNUNET_SETUP_get_object ("GNUNET_setup_gns_pseu_entry"));
+  pseu = gtk_entry_get_text (GTK_ENTRY(entry));    
+  GNUNET_asprintf (&str,
+                   "gnunet://gns/%s/%s\n",
+                   zone_as_string,
+                   pseu);
+  if (0 != QRinput_append (qri,
+                           QR_MODE_8,
+                           strlen (str),
+                           (unsigned char*) str))
+  {
+    GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "QRinput_append");
+    GNUNET_free (str);
+    return NULL;
+  }
+  GNUNET_free (str);
+  qrc = QRcode_encodeInput (qri);
+  if (NULL == qrc)
+  {
+    GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "QRcode_encodeInput");
+    QRinput_free (qri);
+    return NULL;
+  }
+  /* We use a trick to create a pixbuf in a way that works for both Gtk2 and Gtk3
+     by loading a dummy file from disk; all other methods are not portable to both
+     Gtk2 and Gtk3. */
+  dir = GNUNET_GTK_get_data_dir ();
+  GNUNET_asprintf (&fn,
+                   "%s%s",
+                   dir,
+                   "qr_dummy.png");
+  pb = gdk_pixbuf_new_from_file_at_size (fn,
+                                         size, size,
+                                         NULL);
+  GNUNET_free (fn);
+  if (NULL == pb)
+  {
+    QRinput_free (qri);
+    return NULL;
+  }
+  pixels = gdk_pixbuf_get_pixels (pb);
+  n_channels = gdk_pixbuf_get_n_channels (pb);
+  for (x=0;x<size;x++)
+    for (y=0;y<size;y++)
+    {
+      off = (x * qrc->width / size) +
+        (y * qrc->width / size) * qrc->width;
+      for (c = 0; c < n_channels; c++)
+        pixels[(y * size + x) * n_channels + c] = (0 == (qrc->data[off] & 1)) ? 0xFF : 0;
+    }
+  QRcode_free (qrc);
+  QRinput_free (qri);
+  return pb;
+}
+
+
+/**
+ * Create the QR code image for our zone.
+ */
+static void 
+setup_qrcode ()
+{
+  GdkPixbuf *pb;
+  GtkImage *image;
+
+  pb = create_qrcode (QRCODE_IMAGE_SIZE);
+  if (NULL == pb)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("Failed to initialize QR-code pixbuf"));
+    return;
+  }
+  image = GTK_IMAGE (GNUNET_SETUP_get_object ("GNUNET_setup_gns_qr_image"));
+  if (NULL == image)
+  {
+    GNUNET_break (0);
+    return;
+  }
+  gtk_image_set_from_pixbuf (image, pb);
+  g_object_unref (pb);
+}
+
+#endif
+
 
 /**
  * Context we use for making changes to the namestore.
@@ -1312,7 +1429,6 @@ GNUNET_setup_qr_save_as_dialog_response_cb (GtkDialog *dialog,
                                             gpointer user_data)
 {
   GtkBuilder *builder = user_data;
-  GtkImage *image;
   GdkPixbuf *pb;
   char *filename;
 
@@ -1324,14 +1440,18 @@ GNUNET_setup_qr_save_as_dialog_response_cb (GtkDialog *dialog,
   }
   filename =
     GNUNET_GTK_filechooser_get_filename_utf8 (GTK_FILE_CHOOSER (dialog));
-   image = GTK_IMAGE (GNUNET_SETUP_get_object ("GNUNET_setup_gns_qr_image"));
-  pb = gtk_image_get_pixbuf (image);
-
+  pb = create_qrcode (512);
+  if (NULL == pb)
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("Failed to initialize QR-code pixbuf"));
+    return;
+  }
   gdk_pixbuf_save (pb, 
                    filename,
                    "png",
                    NULL, NULL);
   g_free (filename);
+  g_object_unref (pb);
   gtk_widget_destroy (GTK_WIDGET (dialog));    
   g_object_unref (G_OBJECT (builder));
 }
@@ -1411,7 +1531,9 @@ zone_iteration_proc (void *cls,
     iteration = GNUNET_NO;
     GNUNET_free (zc_ctx->label);
     GNUNET_free (zc_ctx);
-
+#if HAVE_QRENCODE_H
+  setup_qrcode ();
+#endif
     gtk_widget_hide (GTK_WIDGET (GNUNET_SETUP_get_object ("GNUNET_setup_gns_status_label")));
     gtk_widget_show (GTK_WIDGET (GNUNET_SETUP_get_object ("GNUNET_setup_gns_main_scrolledwindow")));
     return;
@@ -1573,7 +1695,9 @@ GNUNET_setup_gns_pseu_entry_changed_cb (GtkEditable *editable,
   {
     gtk_entry_set_text (GTK_ENTRY(editable), PSEU_EMPTY_STR);
   }
-
+#if HAVE_QRENCODE_H
+  setup_qrcode ();
+#endif
 }
 
 
@@ -1595,104 +1719,6 @@ GNUNET_setup_gns_public_key_copy_button_clicked_cb (GtkButton *button,
 }
 
 
-#if HAVE_QRENCODE_H
-#include <qrencode.h>
-#include <gdk-pixbuf/gdk-pixbuf.h>
-
-/**
- * Create the QR code image for our zone.
- */
-static void 
-setup_qrcode ()
-{
-  QRinput * qri;
-  QRcode *qrc;
-  char *str;
-  const gchar * pseu;
-  GtkEntry * entry;
-  GdkPixbuf *pb;
-  GtkImage *image;
-  unsigned int x;
-  unsigned int y;
-  unsigned int off;
-  guchar *pixels;
-  int n_channels;
-  int c;
-  const char *dir;
-  char *fn;
-
-  qri = QRinput_new2 (0, QR_ECLEVEL_Q);
-  if (NULL == qri)
-  {
-    GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "QRinput_new2");
-    return;
-  }
-  entry = GTK_ENTRY (GNUNET_SETUP_get_object ("GNUNET_setup_gns_pseu_entry"));
-  pseu = gtk_entry_get_text (GTK_ENTRY(entry));    
-  GNUNET_asprintf (&str,
-                   "gnunet://gns/%s/%s\n",
-                   zone_as_string,
-                   pseu);
-  if (0 != QRinput_append (qri,
-                           QR_MODE_8,
-                           strlen (str),
-                           (unsigned char*) str))
-  {
-    GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "QRinput_append");
-    GNUNET_free (str);
-    return;
-  }
-  GNUNET_free (str);
-  qrc = QRcode_encodeInput (qri);
-  if (NULL == qrc)
-  {
-    GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "QRcode_encodeInput");
-    QRinput_free (qri);
-    return;
-  }
-  /* We use a trick to create a pixbuf in a way that works for both Gtk2 and Gtk3
-     by loading a dummy file from disk; all other methods are not portable to both
-     Gtk2 and Gtk3. */
-  dir = GNUNET_GTK_get_data_dir ();
-  GNUNET_asprintf (&fn,
-                   "%s%s",
-                   dir,
-                   "qr_dummy.png");
-  pb = gdk_pixbuf_new_from_file_at_size (fn,
-                                         QRCODE_IMAGE_SIZE, QRCODE_IMAGE_SIZE,
-                                         NULL);
-  GNUNET_free (fn);
-  if (NULL == pb)
-  {
-    GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("Failed to initialize QR-code pixbuf"));
-    QRinput_free (qri);
-    return;
-  }
-  pixels = gdk_pixbuf_get_pixels (pb);
-  n_channels = gdk_pixbuf_get_n_channels (pb);
-  for (x=0;x<QRCODE_IMAGE_SIZE;x++)
-    for (y=0;y<QRCODE_IMAGE_SIZE;y++)
-    {
-      off = (x * qrc->width / QRCODE_IMAGE_SIZE) +
-        (y * qrc->width / QRCODE_IMAGE_SIZE) * qrc->width;
-      for (c = 0; c < n_channels; c++)
-        pixels[(y * QRCODE_IMAGE_SIZE + x) * n_channels + c] = (0 == (qrc->data[off] & 1)) ? 0 : 0xFF;
-    }
-  image = GTK_IMAGE (GNUNET_SETUP_get_object ("GNUNET_setup_gns_qr_image"));
-  if (NULL == image)
-  {
-    GNUNET_break (0);
-    QRcode_free (qrc);
-    QRinput_free (qri);
-    return;
-  }
-  gtk_image_set_from_pixbuf (image, pb);
-  QRcode_free (qrc);
-  QRinput_free (qri);
-}
-#endif
-
-
 /**
  * Connect to the namestore and initialize the main
  * GNS tree view.