gimp/app/widgets/gimpexportdialog.c

/* GIMP - The GNU Image Manipulation Program
 * Copyright (C) 1995 Spencer Kimball and Peter Mattis
 *
 * gimpexportdialog.c
 * Copyright (C) 2015 Jehan <jehan@girinstud.io>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "config.h"

#include <string.h>

#include <gegl.h>
#include <gtk/gtk.h>

#include "libgimpbase/gimpbase.h"
#include "libgimpwidgets/gimpwidgets.h"

#include "widgets-types.h"

#include "core/gimp.h"
#include "core/gimpimage.h"

#include "file/file-utils.h"
#include "file/gimp-file.h"

#include "pdb/gimppdb.h"

#include "plug-in/gimppluginmanager.h"

#include "gimpexportdialog.h"
#include "gimpfiledialog.h"
#include "gimphelp-ids.h"

#include "gimp-intl.h"


static GFile  * gimp_export_dialog_get_default_folder (Gimp *gimp);

G_DEFINE_TYPE (GimpExportDialog, gimp_export_dialog,
               GIMP_TYPE_FILE_DIALOG)

#define parent_class gimp_export_dialog_parent_class

static void
gimp_export_dialog_class_init (GimpExportDialogClass *klass)
{
}

static void
gimp_export_dialog_init (GimpExportDialog *dialog)
{
}

/*  public functions  */

GtkWidget *
gimp_export_dialog_new (Gimp *gimp)
{
  GimpExportDialog *dialog;

  g_return_val_if_fail (GIMP_IS_GIMP (gimp), NULL);

  dialog = g_object_new (GIMP_TYPE_EXPORT_DIALOG,
                         "gimp",                      gimp,
                         "title",                     _("Export Image"),
                         "role",                      "gimp-file-export",
                         "help-id",                   GIMP_HELP_FILE_EXPORT_AS,
                         "stock-id",                  _("_Export"),

                         "automatic-label",           _("By Extension"),
                         "automatic-help-id",         GIMP_HELP_FILE_SAVE_BY_EXTENSION,

                         "action",                    GTK_FILE_CHOOSER_ACTION_SAVE,
                         "file-procs",                gimp->plug_in_manager->export_procs,
                         "file-procs-all-images",     gimp->plug_in_manager->save_procs,
                         "file-filter-label",         _("All export images"),
                         "local-only",                FALSE,
                         "do-overwrite-confirmation", TRUE,
                         NULL);

  return GTK_WIDGET (dialog);
}

void
gimp_export_dialog_set_image (GimpExportDialog *dialog,
                              Gimp             *gimp,
                              GimpImage        *image)
{
  GFile *dir_file  = NULL;
  GFile *name_file = NULL;
  GFile *ext_file  = NULL;
  gchar *basename;

  g_return_if_fail (GIMP_IS_EXPORT_DIALOG (dialog));
  g_return_if_fail (GIMP_IS_IMAGE (image));

  GIMP_FILE_DIALOG (dialog)->image = image;

  gimp_file_dialog_set_file_proc (GIMP_FILE_DIALOG (dialog), NULL);

  /*
   * Priority of default paths for Export:
   *
   *   1. Last Export path
   *   2. Path of import source
   *   3. Path of XCF source
   *   4. Last path of any save to XCF
   *   5. Last Export path of any document
   *   6. The default path (usually the OS 'Documents' path)
   */

  dir_file = gimp_image_get_exported_file (image);

  if (! dir_file)
    dir_file = g_object_get_data (G_OBJECT (image),
                                  "gimp-image-source-file");

  if (! dir_file)
    dir_file = gimp_image_get_imported_file (image);

  if (! dir_file)
    dir_file = gimp_image_get_file (image);

  if (! dir_file)
    dir_file = g_object_get_data (G_OBJECT (gimp),
                                  GIMP_FILE_SAVE_LAST_FILE_KEY);

  if (! dir_file)
    dir_file = g_object_get_data (G_OBJECT (gimp),
                                  GIMP_FILE_EXPORT_LAST_FILE_KEY);

  if (! dir_file)
    dir_file = gimp_export_dialog_get_default_folder (gimp);

  /* Priority of default basenames for Export:
   *
   *   1. Last Export name
   *   3. Save URI
   *   2. Source file name
   *   3. 'Untitled'
   */

  name_file = gimp_image_get_exported_file (image);

  if (! name_file)
    name_file = gimp_image_get_file (image);

  if (! name_file)
    name_file = gimp_image_get_imported_file (image);

  if (! name_file)
    name_file = gimp_image_get_untitled_file (image);


  /* Priority of default type/extension for Export:
   *
   *   1. Type of last Export
   *   2. Type of the image Import
   *   3. Type of latest Export of any document
   *   4. .png
   */
  ext_file = gimp_image_get_exported_file (image);

  if (! ext_file)
    ext_file = gimp_image_get_imported_file (image);

  if (! ext_file)
    ext_file = g_object_get_data (G_OBJECT (gimp),
                                  GIMP_FILE_EXPORT_LAST_FILE_KEY);

  if (ext_file)
    g_object_ref (ext_file);
  else
    ext_file = g_file_new_for_uri ("file:///we/only/care/about/extension.png");

  if (ext_file)
    {
      GFile *tmp_file = file_utils_file_with_new_ext (name_file, ext_file);
      basename = g_path_get_basename (gimp_file_get_utf8_name (tmp_file));
      g_object_unref (tmp_file);
      g_object_unref (ext_file);
    }
  else
    {
      basename = g_path_get_basename (gimp_file_get_utf8_name (name_file));
    }

  if (g_file_query_file_type (dir_file, G_FILE_QUERY_INFO_NONE, NULL) ==
      G_FILE_TYPE_DIRECTORY)
    {
      gtk_file_chooser_set_current_folder_file (GTK_FILE_CHOOSER (dialog),
                                                dir_file, NULL);
    }
  else
    {
      GFile *parent_file = g_file_get_parent (dir_file);
      gtk_file_chooser_set_current_folder_file (GTK_FILE_CHOOSER (dialog),
                                                parent_file, NULL);
      g_object_unref (parent_file);
    }

  gtk_file_chooser_set_current_name (GTK_FILE_CHOOSER (dialog), basename);
}

/*  private functions  */

static GFile *
gimp_export_dialog_get_default_folder (Gimp *gimp)
{
  if (gimp->default_folder)
    {
      return gimp->default_folder;
    }
  else
    {
      GFile *file = g_object_get_data (G_OBJECT (gimp),
                                       "gimp-documents-folder");

      if (! file)
        {
          gchar *path;

          /* Make sure it ends in '/' */
          path = g_build_path (G_DIR_SEPARATOR_S,
                               g_get_user_special_dir (G_USER_DIRECTORY_DOCUMENTS),
                               G_DIR_SEPARATOR_S,
                               NULL);

          /* Paranoia fallback, see bug #722400 */
          if (! path)
            path = g_build_path (G_DIR_SEPARATOR_S,
                                 g_get_home_dir (),
                                 G_DIR_SEPARATOR_S,
                                 NULL);

          file = g_file_new_for_path (path);
          g_free (path);

          g_object_set_data_full (G_OBJECT (gimp), "gimp-documents-folder",
                                  file, (GDestroyNotify) g_object_unref);
        }

      return file;
    }
}