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nautilus-image-rotator.c

/*
 *  nautilus-image-rotator.c
 * 
 *  Copyright (C) 2004-2008 Jürg Billeter
 *
 *  This library 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 2 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Library General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public
 *  License along with this library; if not, write to the Free
 *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  Author: Jürg Billeter <j@bitron.ch>
 * 
 */

#ifdef HAVE_CONFIG_H
 #include <config.h> /* for GETTEXT_PACKAGE */
#endif

#include "nautilus-image-rotator.h"

#include <string.h>

#include <glib/gi18n.h>
#include <gio/gio.h>
#include <gtk/gtk.h>

#include <libnautilus-extension/nautilus-file-info.h>
 
typedef struct _NautilusImageRotatorPrivate NautilusImageRotatorPrivate;

00040 struct _NautilusImageRotatorPrivate {
      GList *files;
      
      gchar *suffix;
      
      int images_rotated;
      int images_total;
      gboolean cancelled;
      
      gchar *angle;

      GtkDialog *rotate_dialog;
      GtkRadioButton *default_angle_radiobutton;
      GtkComboBox *angle_combobox;
      GtkRadioButton *custom_angle_radiobutton;
      GtkSpinButton *angle_spinbutton;
      GtkRadioButton *append_radiobutton;
      GtkEntry *name_entry;
      GtkRadioButton *inplace_radiobutton;

      GtkWidget *progress_dialog;
      GtkWidget *progress_bar;
      GtkWidget *progress_label;
};

#define NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NAUTILUS_TYPE_IMAGE_ROTATOR, NautilusImageRotatorPrivate))

G_DEFINE_TYPE (NautilusImageRotator, nautilus_image_rotator, G_TYPE_OBJECT)

enum {
      PROP_FILES = 1,
};

typedef enum {
      /* Place Signal Types Here */
      SIGNAL_TYPE_EXAMPLE,
      LAST_SIGNAL
} NautilusImageRotatorSignalType;

static void
nautilus_image_rotator_finalize(GObject *object)
{
      NautilusImageRotator *dialog = NAUTILUS_IMAGE_ROTATOR (object);
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (dialog);
      
      g_free (priv->suffix);
            
      G_OBJECT_CLASS(nautilus_image_rotator_parent_class)->finalize(object);
}

static void
nautilus_image_rotator_set_property (GObject      *object,
                        guint         property_id,
                        const GValue *value,
                        GParamSpec   *pspec)
{
      NautilusImageRotator *dialog = NAUTILUS_IMAGE_ROTATOR (object);
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (dialog);

      switch (property_id) {
      case PROP_FILES:
            priv->files = g_value_get_pointer (value);
            priv->images_total = g_list_length (priv->files);
            break;
      default:
            /* We don't have any other property... */
            G_OBJECT_WARN_INVALID_PROPERTY_ID(object,property_id,pspec);
            break;
      }
}

static void
nautilus_image_rotator_get_property (GObject      *object,
                        guint         property_id,
                        GValue       *value,
                        GParamSpec   *pspec)
{
      NautilusImageRotator *self = NAUTILUS_IMAGE_ROTATOR (object);
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (self);

      switch (property_id) {
      case PROP_FILES:
            g_value_set_pointer (value, priv->files);
            break;
      default:
            /* We don't have any other property... */
            G_OBJECT_WARN_INVALID_PROPERTY_ID(object,property_id,pspec);
            break;
      }
}

static void
nautilus_image_rotator_class_init(NautilusImageRotatorClass *klass)
{
      g_type_class_add_private (klass, sizeof (NautilusImageRotatorPrivate));

      GObjectClass *object_class = G_OBJECT_CLASS(klass);
      GParamSpec *files_param_spec;

      object_class->finalize = nautilus_image_rotator_finalize;
      object_class->set_property = nautilus_image_rotator_set_property;
      object_class->get_property = nautilus_image_rotator_get_property;

      files_param_spec = g_param_spec_pointer ("files",
      "Files",
      "Set selected files",
      G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE);

      g_object_class_install_property (object_class,
      PROP_FILES,
      files_param_spec);
}

static void run_op (NautilusImageRotator *rotator);

static GFile *
nautilus_image_rotator_transform_filename (NautilusImageRotator *rotator, GFile *orig_file)
{
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (rotator);

      GFile *parent_file, *new_file;
      char *basename, *extension, *new_basename;
      
      g_return_val_if_fail (G_IS_FILE (orig_file), NULL);

      parent_file = g_file_get_parent (orig_file);

      basename = g_strdup (g_file_get_basename (orig_file));
      
      extension = g_strdup (strrchr (basename, '.'));
      if (extension != NULL)
            basename[strlen (basename) - strlen (extension)] = '\0';
            
      new_basename = g_strdup_printf ("%s%s%s", basename,
            priv->suffix == NULL ? ".tmp" : priv->suffix,
            extension == NULL ? "" : extension);
      g_free (basename);
      g_free (extension);

      new_file = g_file_get_child (parent_file, new_basename);

      g_object_unref (parent_file);
      g_free (new_basename);

      return new_file;
}

static void
op_finished (GPid pid, gint status, gpointer data)
{
      NautilusImageRotator *rotator = NAUTILUS_IMAGE_ROTATOR (data);
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (rotator);
      
      gboolean retry = TRUE;
      
      NautilusFileInfo *file = NAUTILUS_FILE_INFO (priv->files->data);
      
      if (status != 0) {
            /* rotating failed */
            char *name = nautilus_file_info_get_name (file);

            GtkWidget *msg_dialog = gtk_message_dialog_new (GTK_WINDOW (priv->progress_dialog),
                  GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR,
                  GTK_BUTTONS_NONE,
                  "'%s' cannot be rotated. Check whether you have permission to write to this folder.",
                  name);
            g_free (name);
            
            gtk_dialog_add_button (GTK_DIALOG (msg_dialog), _("_Skip"), 1);
            gtk_dialog_add_button (GTK_DIALOG (msg_dialog), GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL);
            gtk_dialog_add_button (GTK_DIALOG (msg_dialog), _("_Retry"), 0);
            gtk_dialog_set_default_response (GTK_DIALOG (msg_dialog), 0);
            
            int response_id = gtk_dialog_run (GTK_DIALOG (msg_dialog));
            gtk_widget_destroy (msg_dialog);
            if (response_id == 0) {
                  retry = TRUE;
            } else if (response_id == GTK_RESPONSE_CANCEL) {
                  priv->cancelled = TRUE;
            } else if (response_id == 1) {
                  retry = FALSE;
            }
            
      } else if (priv->suffix == NULL) {
            /* rotate image in place */
            GFile *orig_location = nautilus_file_info_get_location (file);
            GFile *new_location = nautilus_image_rotator_transform_filename (rotator, orig_location);
            g_file_move (new_location, orig_location, G_FILE_COPY_OVERWRITE, NULL, NULL, NULL, NULL);
            g_object_unref (orig_location);
            g_object_unref (new_location);
      }

      if (status == 0 || !retry) {
            /* image has been successfully rotated (or skipped) */
            priv->images_rotated++;
            priv->files = priv->files->next;
      }
      
      if (!priv->cancelled && priv->files != NULL) {
            /* process next image */
            run_op (rotator);
      } else {
            /* cancel/terminate operation */
            gtk_widget_destroy (priv->progress_dialog);
      }
}

static void
run_op (NautilusImageRotator *rotator)
{
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (rotator);
      
      g_return_if_fail (priv->files != NULL);
      
      NautilusFileInfo *file = NAUTILUS_FILE_INFO (priv->files->data);

      GFile *orig_location = nautilus_file_info_get_location (file);
      char *filename = g_file_get_path (orig_location);
      GFile *new_location = nautilus_image_rotator_transform_filename (rotator, orig_location);
      char *new_filename = g_file_get_path (new_location);
      g_object_unref (orig_location);
      g_object_unref (new_location);

      /* FIXME: check whether new_uri already exists and provide "Replace _All", "_Skip", and "_Replace" options */
      
      gchar *argv[8];
      argv[0] = "/usr/bin/convert";
      argv[1] = filename;
      argv[2] = "-rotate";
      argv[3] = priv->angle;
      argv[4] = "-orient";
      argv[5] = "TopLeft";
      argv[6] = new_filename;
      argv[7] = NULL;
      
      pid_t pid;

      if (!g_spawn_async (NULL, argv, NULL, G_SPAWN_DO_NOT_REAP_CHILD, NULL, NULL, &pid, NULL)) {
            // FIXME: error handling
            return;
      }
      
      g_free (filename);
      g_free (new_filename);
      
      g_child_watch_add (pid, op_finished, rotator);
      
      char *tmp;

      gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (priv->progress_bar), (double) (priv->images_rotated + 1) / priv->images_total);
      tmp = g_strdup_printf (_("Rotating image: %d of %d"), priv->images_rotated + 1, priv->images_total);
      gtk_progress_bar_set_text (GTK_PROGRESS_BAR (priv->progress_bar), tmp);
      g_free (tmp);
      
      char *name = nautilus_file_info_get_name (file);
      tmp = g_strdup_printf (_("<i>Rotating \"%s\"</i>"), name);
      g_free (name);
      gtk_label_set_markup (GTK_LABEL (priv->progress_label), tmp);
      g_free (tmp);
      
}

static void
nautilus_image_rotator_response_cb (GtkDialog *dialog, gint response_id, gpointer user_data)
{
      NautilusImageRotator *rotator = NAUTILUS_IMAGE_ROTATOR (user_data);
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (rotator);

      if (response_id == GTK_RESPONSE_OK) {
            if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->append_radiobutton))) {
                  if (strlen (gtk_entry_get_text (priv->name_entry)) == 0) {
                        GtkWidget *msg_dialog = gtk_message_dialog_new (GTK_WINDOW (dialog),
                              GTK_DIALOG_DESTROY_WITH_PARENT, GTK_MESSAGE_ERROR,
                              GTK_BUTTONS_OK, _("Please enter a valid filename suffix!"));
                        gtk_dialog_run (GTK_DIALOG (msg_dialog));
                        gtk_widget_destroy (msg_dialog);
                        return;
                  }
                  priv->suffix = g_strdup (gtk_entry_get_text (priv->name_entry));
            }
            if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->default_angle_radiobutton))) {
                  switch (gtk_combo_box_get_active (GTK_COMBO_BOX (priv->angle_combobox))) {
                  case 0:
                        priv->angle = g_strdup_printf ("90");
                        break;
                  case 1:
                        priv->angle = g_strdup_printf ("-90");
                        break;
                  case 2:
                        priv->angle = g_strdup_printf ("180");
                        break;
                  default:
                        g_assert_not_reached ();
                  }
            } else if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->custom_angle_radiobutton))) {
                  priv->angle = g_strdup_printf ("%d", (int) gtk_spin_button_get_value (priv->angle_spinbutton));
            } else {
                  g_assert_not_reached ();
            }
            
            run_op (rotator);
      }

      gtk_widget_destroy (GTK_WIDGET (dialog));
}

static void
nautilus_image_rotator_init(NautilusImageRotator *rotator)
{
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (rotator);

      GtkBuilder *ui;
      gchar      *path;
      guint       result;
      GError     *err = NULL;

      /* Let's create our gtkbuilder and load the xml file */
      ui = gtk_builder_new ();
      gtk_builder_set_translation_domain (ui, GETTEXT_PACKAGE);
      path = g_build_filename (DATADIR, PACKAGE, "nautilus-image-rotate.ui", NULL);
      result = gtk_builder_add_from_file (ui, path, &err);
      g_free (path);

      /* If we're unable to load the xml file */
      if (result == 0) {
            g_warning ("%s", err->message);
            g_error_free (err);
            return;
      }

      /* Grab some widgets */
      priv->rotate_dialog = GTK_DIALOG (gtk_builder_get_object (ui, "rotate_dialog"));
      priv->default_angle_radiobutton =
            GTK_RADIO_BUTTON (gtk_builder_get_object (ui, "default_angle_radiobutton"));
      priv->angle_combobox = GTK_COMBO_BOX (gtk_builder_get_object (ui, "angle_combobox"));
      priv->custom_angle_radiobutton =
            GTK_RADIO_BUTTON (gtk_builder_get_object (ui, "custom_angle_radiobutton"));
      priv->angle_spinbutton =
            GTK_SPIN_BUTTON (gtk_builder_get_object (ui, "angle_spinbutton"));
      priv->append_radiobutton =
            GTK_RADIO_BUTTON (gtk_builder_get_object (ui, "append_radiobutton"));
      priv->name_entry = GTK_ENTRY (gtk_builder_get_object (ui, "name_entry"));
      priv->inplace_radiobutton =
            GTK_RADIO_BUTTON (gtk_builder_get_object (ui, "inplace_radiobutton"));

      /* Set default value for combobox */
      gtk_combo_box_set_active  (priv->angle_combobox, 0); /* 90° clockwise */

      /* Connect the signal */
      g_signal_connect (G_OBJECT (priv->rotate_dialog), "response",
                    (GCallback) nautilus_image_rotator_response_cb,
                    rotator);
}

NautilusImageRotator *
nautilus_image_rotator_new (GList *files)
{
      return g_object_new (NAUTILUS_TYPE_IMAGE_ROTATOR, "files", files, NULL);
}

void
nautilus_image_rotator_show_dialog (NautilusImageRotator *rotator)
{
      NautilusImageRotatorPrivate *priv = NAUTILUS_IMAGE_ROTATOR_GET_PRIVATE (rotator);

      gtk_widget_show (GTK_WIDGET (priv->rotate_dialog));
}

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