[Gimp-developer] tiff save dialog cosmetic fix

[Brion Vibber <brion@xxxxxxxxx>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

While I was playing with the tiff plugin, I fixed it to disable the
'Save color values from transparent pixels' box when saving an image
with no alpha channel, as the png plugin does. The option has no effect
without alpha.

Patch attached.

- -- brion vibber (brion @ pobox.com)
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (Darwin)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFA8PX7wRnhpk1wk44RAmzeAKCYtsM7Bvuv8HIAqLIgL90yuta1hgCfdw/x
cbyYmGinGoJEAiA7myJuwkk=
=FVV4
-----END PGP SIGNATURE-----

--- gimp/plug-ins/common/tiff.c-cmyk	2004-07-10 23:21:01.000000000 -0700
+++ gimp/plug-ins/common/tiff.c	2004-07-11 01:06:45.000000000 -0700
@@ -142,7 +142,7 @@
                                          gint32       drawable,
                                          gint32       orig_image);
 
-static gboolean  save_dialog            (void);
+static gboolean  save_dialog            (gboolean     alpha);
 
 static void      comment_entry_callback (GtkWidget   *widget,
                                          gpointer     data);
@@ -354,7 +354,7 @@
           gimp_parasite_free (parasite);
 
           /*  First acquire information with a dialog  */
-          if (! save_dialog ())
+          if (! save_dialog (gimp_drawable_has_alpha (drawable)))
             status = GIMP_PDB_CANCEL;
           break;
 
@@ -2082,7 +2082,7 @@
 }
 
 static gboolean
-save_dialog (void)
+save_dialog (gboolean alpha)
 {
   GtkWidget *dlg;
   GtkWidget *vbox;
@@ -2126,7 +2126,8 @@
   toggle = gtk_check_button_new_with_mnemonic
     ( _("Save _color values from transparent pixels"));
   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (toggle),
-                                tsvals.save_transp_pixels);
+                                alpha && tsvals.save_transp_pixels);
+  gtk_widget_set_sensitive (toggle, alpha);
   gtk_box_pack_start (GTK_BOX (vbox), toggle, FALSE, FALSE, 0);
   gtk_widget_show (toggle);