gtkpagesetupunixdialog.c 59.8 KB
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/* GtkPageSetupUnixDialog 
 * Copyright (C) 2006 Alexander Larsson <alexl@redhat.com>
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 * Copyright © 2006, 2007, 2008 Christian Persch
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 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */


#include "config.h"
#include <string.h>
#include <locale.h>
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#ifdef HAVE__NL_MEASUREMENT_MEASUREMENT
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#include <langinfo.h>
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#endif
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#include "gtkintl.h"
#include "gtkprivate.h"

#include "gtkliststore.h"
#include "gtkstock.h"
#include "gtktreeviewcolumn.h"
#include "gtktreeselection.h"
#include "gtktreemodel.h"
#include "gtkbutton.h"
#include "gtkscrolledwindow.h"
#include "gtkvbox.h"
#include "gtkhbox.h"
#include "gtkframe.h"
#include "gtkeventbox.h"
#include "gtkcombobox.h"
#include "gtktogglebutton.h"
#include "gtkradiobutton.h"
#include "gtklabel.h"
#include "gtktable.h"
#include "gtkcelllayout.h"
#include "gtkcellrenderertext.h"
#include "gtkalignment.h"
#include "gtkspinbutton.h"
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#include "gtkbbox.h"
#include "gtkhbbox.h"
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#include "gtkpagesetupunixdialog.h"
#include "gtkprintbackend.h"
#include "gtkprinter-private.h"
#include "gtkpapersize.h"
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#include "gtkprintutils.h"
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#include "gtkalias.h"

#define CUSTOM_PAPER_FILENAME ".gtk-custom-papers"


struct GtkPageSetupUnixDialogPrivate
{
  GtkListStore *printer_list;
  GtkListStore *page_setup_list;
  GtkListStore *custom_paper_list;
  
  GList *print_backends;

  GtkWidget *printer_combo;
  GtkWidget *paper_size_combo;
  GtkWidget *paper_size_label;

  GtkWidget *portrait_radio;
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  GtkWidget *reverse_portrait_radio;
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  GtkWidget *landscape_radio;
  GtkWidget *reverse_landscape_radio;

  guint request_details_tag;
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  GtkPrinter *request_details_printer;
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  GtkPrintSettings *print_settings;

  /* Save last setup so we can re-set it after selecting manage custom sizes */
  GtkPageSetup *last_setup;

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  gchar *waiting_for_printer;
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};

enum {
  PRINTER_LIST_COL_NAME,
  PRINTER_LIST_COL_PRINTER,
  PRINTER_LIST_N_COLS
};

enum {
  PAGE_SETUP_LIST_COL_PAGE_SETUP,
  PAGE_SETUP_LIST_COL_IS_SEPARATOR,
  PAGE_SETUP_LIST_N_COLS
};

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G_DEFINE_TYPE (GtkPageSetupUnixDialog, gtk_page_setup_unix_dialog, GTK_TYPE_DIALOG)
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#define GTK_PAGE_SETUP_UNIX_DIALOG_GET_PRIVATE(o)  \
   (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_PAGE_SETUP_UNIX_DIALOG, GtkPageSetupUnixDialogPrivate))

static void gtk_page_setup_unix_dialog_finalize  (GObject                *object);
static void populate_dialog                      (GtkPageSetupUnixDialog *dialog);
static void fill_paper_sizes_from_printer        (GtkPageSetupUnixDialog *dialog,
						  GtkPrinter             *printer);
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static void show_custom_paper_dialog             (GtkPageSetupUnixDialog *dialog);
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static void printer_added_cb                     (GtkPrintBackend        *backend,
						  GtkPrinter             *printer,
						  GtkPageSetupUnixDialog *dialog);
static void printer_removed_cb                   (GtkPrintBackend        *backend,
						  GtkPrinter             *printer,
						  GtkPageSetupUnixDialog *dialog);
static void printer_status_cb                    (GtkPrintBackend        *backend,
						  GtkPrinter             *printer,
						  GtkPageSetupUnixDialog *dialog);


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static const gchar const common_paper_sizes[][16] = {
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  "na_letter",
  "na_legal",
  "iso_a4",
  "iso_a5",
  "roc_16k",
  "iso_b5",
  "jis_b5",
  "na_number-10",
  "iso_dl",
  "jpn_chou3",
  "na_ledger",
  "iso_a3",
};

static GtkUnit
get_default_user_units (void)
{
  /* Translate to the default units to use for presenting
   * lengths to the user. Translate to default:inch if you
   * want inches, otherwise translate to default:mm.
   * Do *not* translate it to "predefinito:mm", if it
   * it isn't default:mm or default:inch it will not work 
   */
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  gchar *e = _("default:mm");
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#ifdef HAVE__NL_MEASUREMENT_MEASUREMENT
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  gchar *imperial = NULL;
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  imperial = nl_langinfo (_NL_MEASUREMENT_MEASUREMENT);
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  if (imperial && imperial[0] == 2 )
    return GTK_UNIT_INCH;  /* imperial */
  if (imperial && imperial[0] == 1 )
    return GTK_UNIT_MM;  /* metric */
#endif
  
  if (strcmp (e, "default:inch")==0)
    return GTK_UNIT_INCH;
  else if (strcmp (e, "default:mm"))
    g_warning ("Whoever translated default:mm did so wrongly.\n");
  return GTK_UNIT_MM;
}

static char *
custom_paper_get_filename (void)
{
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  gchar *filename;
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  filename = g_build_filename (g_get_home_dir (), 
			       CUSTOM_PAPER_FILENAME, NULL);
  g_assert (filename != NULL);
  return filename;
}

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GList *
_gtk_load_custom_papers (void)
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{
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  GKeyFile *keyfile;
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  gchar *filename;
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  gchar **groups;
  gsize n_groups, i;
  gboolean load_ok;
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  GList *result = NULL;
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  filename = custom_paper_get_filename ();

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  keyfile = g_key_file_new ();
  load_ok = g_key_file_load_from_file (keyfile, filename, 0, NULL);
  g_free (filename);
  if (!load_ok)
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    {
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      g_key_file_free (keyfile);
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      return NULL;
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    }

  groups = g_key_file_get_groups (keyfile, &n_groups);
  for (i = 0; i < n_groups; ++i)
    {
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      GtkPageSetup *page_setup;

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      page_setup = gtk_page_setup_new_from_key_file (keyfile, groups[i], NULL);
      if (!page_setup)
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        continue;

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      result = g_list_prepend (result, page_setup);
    }
 
  g_strfreev (groups);
  g_key_file_free (keyfile);

  return g_list_reverse (result);
}

static void
load_custom_papers (GtkListStore *store)
{
  GtkTreeIter iter;
  GList *papers, *p;
  GtkPageSetup *page_setup;
  
  papers = _gtk_load_custom_papers ();
  for (p = papers; p; p = p->next)
    {
      page_setup = p->data;
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      gtk_list_store_append (store, &iter);
      gtk_list_store_set (store, &iter,
			  0, page_setup, 
			  -1);
      g_object_unref (page_setup);
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    }
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  g_list_free (papers); 
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}

static void
save_custom_papers (GtkListStore *store)
{
  GtkTreeModel *model = GTK_TREE_MODEL (store);
  GtkTreeIter iter;
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  GKeyFile *keyfile;
  gchar *filename, *data;
  gsize len;
  gint i = 0;
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  keyfile = g_key_file_new ();
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  if (gtk_tree_model_get_iter_first (model, &iter))
    {
      do
	{
	  GtkPageSetup *page_setup;
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	  gchar group[32];

	  g_snprintf (group, sizeof (group), "Paper%u", i);

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	  gtk_tree_model_get (model, &iter, 0, &page_setup, -1);

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	  gtk_page_setup_to_key_file (page_setup, keyfile, group);
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	  ++i;
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	} while (gtk_tree_model_iter_next (model, &iter));
    }

  filename = custom_paper_get_filename ();
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  data = g_key_file_to_data (keyfile, &len, NULL);
  g_file_set_contents (filename, data, len, NULL);
  g_free (data);
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  g_free (filename);
}

static void
gtk_page_setup_unix_dialog_class_init (GtkPageSetupUnixDialogClass *class)
{
  GObjectClass *object_class;
  GtkWidgetClass *widget_class;

  object_class = (GObjectClass *) class;
  widget_class = (GtkWidgetClass *) class;

  object_class->finalize = gtk_page_setup_unix_dialog_finalize;

  g_type_class_add_private (class, sizeof (GtkPageSetupUnixDialogPrivate));  
}

static void
gtk_page_setup_unix_dialog_init (GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv;
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  GtkTreeIter iter;

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  priv = dialog->priv = GTK_PAGE_SETUP_UNIX_DIALOG_GET_PRIVATE (dialog);

  priv->print_backends = NULL;
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  priv->printer_list = gtk_list_store_new (PRINTER_LIST_N_COLS,
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						   G_TYPE_STRING, 
						   G_TYPE_OBJECT);

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  gtk_list_store_append (priv->printer_list, &iter);
  gtk_list_store_set (priv->printer_list, &iter,
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                      PRINTER_LIST_COL_NAME, _("<b>Any Printer</b>\nFor portable documents"),
                      PRINTER_LIST_COL_PRINTER, NULL,
                      -1);
  
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  priv->page_setup_list = gtk_list_store_new (PAGE_SETUP_LIST_N_COLS,
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						      G_TYPE_OBJECT,
						      G_TYPE_BOOLEAN);

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  priv->custom_paper_list = gtk_list_store_new (1, G_TYPE_OBJECT);
  load_custom_papers (priv->custom_paper_list);
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  populate_dialog (dialog);
  
  gtk_dialog_add_buttons (GTK_DIALOG (dialog), 
                          GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                          GTK_STOCK_APPLY, GTK_RESPONSE_OK,
                          NULL);
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  gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
					   GTK_RESPONSE_OK,
					   GTK_RESPONSE_CANCEL,
					   -1);
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  gtk_dialog_set_default_response (GTK_DIALOG (dialog), GTK_RESPONSE_OK);
}

static void
gtk_page_setup_unix_dialog_finalize (GObject *object)
{
  GtkPageSetupUnixDialog *dialog = GTK_PAGE_SETUP_UNIX_DIALOG (object);
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkPrintBackend *backend;
  GList *node;
  
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  if (priv->request_details_tag)
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    {
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      g_signal_handler_disconnect (priv->request_details_printer,
				   priv->request_details_tag);
      g_object_unref (priv->request_details_printer);
      priv->request_details_printer = NULL;
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      priv->request_details_tag = 0;
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    }
  
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  if (priv->printer_list)
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    {
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      g_object_unref (priv->printer_list);
      priv->printer_list = NULL;
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    }

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  if (priv->page_setup_list)
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    {
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      g_object_unref (priv->page_setup_list);
      priv->page_setup_list = NULL;
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    }

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  if (priv->custom_paper_list)
    {
      g_object_unref (priv->custom_paper_list);
      priv->custom_paper_list = NULL;
    }

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  if (priv->print_settings)
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    {
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      g_object_unref (priv->print_settings);
      priv->print_settings = NULL;
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    }

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  g_free (priv->waiting_for_printer);
  priv->waiting_for_printer = NULL;

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  for (node = priv->print_backends; node != NULL; node = node->next)
    {
      backend = GTK_PRINT_BACKEND (node->data);

      g_signal_handlers_disconnect_by_func (backend, printer_added_cb, dialog);
      g_signal_handlers_disconnect_by_func (backend, printer_removed_cb, dialog);
      g_signal_handlers_disconnect_by_func (backend, printer_status_cb, dialog);

      gtk_print_backend_destroy (backend);
      g_object_unref (backend);
    }
  
  g_list_free (priv->print_backends);
  priv->print_backends = NULL;

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  G_OBJECT_CLASS (gtk_page_setup_unix_dialog_parent_class)->finalize (object);
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}

static void
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printer_added_cb (GtkPrintBackend        *backend, 
		  GtkPrinter             *printer, 
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		  GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkTreeIter iter;
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  gchar *str;
  const gchar *location;;
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  if (gtk_printer_is_virtual (printer))
    return;

  location = gtk_printer_get_location (printer);
  if (location == NULL)
    location = "";
  str = g_strdup_printf ("<b>%s</b>\n%s",
			 gtk_printer_get_name (printer),
			 location);
  
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  gtk_list_store_append (priv->printer_list, &iter);
  gtk_list_store_set (priv->printer_list, &iter,
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                      PRINTER_LIST_COL_NAME, str,
                      PRINTER_LIST_COL_PRINTER, printer,
                      -1);

  g_object_set_data_full (G_OBJECT (printer), 
			  "gtk-print-tree-iter", 
                          gtk_tree_iter_copy (&iter),
                          (GDestroyNotify) gtk_tree_iter_free);
  
  g_free (str);

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  if (priv->waiting_for_printer != NULL &&
      strcmp (priv->waiting_for_printer,
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	      gtk_printer_get_name (printer)) == 0)
    {
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      gtk_combo_box_set_active_iter (GTK_COMBO_BOX (priv->printer_combo),
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				     &iter);
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      priv->waiting_for_printer = NULL;
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    }
}

static void
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printer_removed_cb (GtkPrintBackend        *backend, 
		    GtkPrinter             *printer, 
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		    GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkTreeIter *iter;
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  iter = g_object_get_data (G_OBJECT (printer), "gtk-print-tree-iter");
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  gtk_list_store_remove (GTK_LIST_STORE (priv->printer_list), iter);
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}


static void
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printer_status_cb (GtkPrintBackend        *backend, 
                   GtkPrinter             *printer, 
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		   GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkTreeIter *iter;
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  gchar *str;
  const gchar *location;;
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  iter = g_object_get_data (G_OBJECT (printer), "gtk-print-tree-iter");

  location = gtk_printer_get_location (printer);
  if (location == NULL)
    location = "";
  str = g_strdup_printf ("<b>%s</b>\n%s",
			 gtk_printer_get_name (printer),
			 location);
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  gtk_list_store_set (priv->printer_list, iter,
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                      PRINTER_LIST_COL_NAME, str,
                      -1);
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  g_free (str);
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}

static void
printer_list_initialize (GtkPageSetupUnixDialog *dialog,
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			 GtkPrintBackend        *print_backend)
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{
  GList *list, *node;
  
  g_return_if_fail (print_backend != NULL);

  g_signal_connect_object (print_backend, 
			   "printer-added", 
			   (GCallback) printer_added_cb, 
			   G_OBJECT (dialog), 0);

  g_signal_connect_object (print_backend, 
			   "printer-removed", 
			   (GCallback) printer_removed_cb, 
			   G_OBJECT (dialog), 0);

  g_signal_connect_object (print_backend, 
			   "printer-status-changed", 
			   (GCallback) printer_status_cb, 
			   G_OBJECT (dialog), 0);

  list = gtk_print_backend_get_printer_list (print_backend);

  node = list;
  while (node != NULL)
    {
      printer_added_cb (print_backend, node->data, dialog);
      node = node->next;
    }

  g_list_free (list);
  
}

static void
load_print_backends (GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GList *node;

  if (g_module_supported ())
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    priv->print_backends = gtk_print_backend_load_modules ();
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  for (node = priv->print_backends; node != NULL; node = node->next)
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    printer_list_initialize (dialog, GTK_PRINT_BACKEND (node->data));
}

static gboolean
paper_size_row_is_separator (GtkTreeModel *model,
			     GtkTreeIter  *iter,
			     gpointer      data)
{
  gboolean separator;

  gtk_tree_model_get (model, iter, PAGE_SETUP_LIST_COL_IS_SEPARATOR, &separator, -1);
  return separator;
}

static GtkPageSetup *
get_current_page_setup (GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkPageSetup *current_page_setup;
  GtkComboBox *combo_box;
  GtkTreeIter iter;

  current_page_setup = NULL;
  
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  combo_box = GTK_COMBO_BOX (priv->paper_size_combo);
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  if (gtk_combo_box_get_active_iter (combo_box, &iter))
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    gtk_tree_model_get (GTK_TREE_MODEL (priv->page_setup_list), &iter,
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			PAGE_SETUP_LIST_COL_PAGE_SETUP, &current_page_setup, -1);

  if (current_page_setup)
    return current_page_setup;

  /* No selected page size, return the default one.
   * This is used to set the first page setup when the dialog is created
   * as there is no selection on the first printer_changed.
   */ 
  return gtk_page_setup_new ();
}

static gboolean
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page_setup_is_equal (GtkPageSetup *a, 
		     GtkPageSetup *b)
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{
  return
    gtk_paper_size_is_equal (gtk_page_setup_get_paper_size (a),
			     gtk_page_setup_get_paper_size (b)) &&
    gtk_page_setup_get_top_margin (a, GTK_UNIT_MM) == gtk_page_setup_get_top_margin (b, GTK_UNIT_MM) &&
    gtk_page_setup_get_bottom_margin (a, GTK_UNIT_MM) == gtk_page_setup_get_bottom_margin (b, GTK_UNIT_MM) &&
    gtk_page_setup_get_left_margin (a, GTK_UNIT_MM) == gtk_page_setup_get_left_margin (b, GTK_UNIT_MM) &&
    gtk_page_setup_get_right_margin (a, GTK_UNIT_MM) == gtk_page_setup_get_right_margin (b, GTK_UNIT_MM);
}

static gboolean
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page_setup_is_same_size (GtkPageSetup *a,
			 GtkPageSetup *b)
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{
  return gtk_paper_size_is_equal (gtk_page_setup_get_paper_size (a),
				  gtk_page_setup_get_paper_size (b));
}

static gboolean
set_paper_size (GtkPageSetupUnixDialog *dialog,
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		GtkPageSetup           *page_setup,
		gboolean                size_only,
		gboolean                add_item)
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{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkTreeModel *model;
  GtkTreeIter iter;
  GtkPageSetup *list_page_setup;

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  model = GTK_TREE_MODEL (priv->page_setup_list);
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  if (gtk_tree_model_get_iter_first (model, &iter))
    {
      do
	{
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	  gtk_tree_model_get (GTK_TREE_MODEL (priv->page_setup_list), &iter,
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			      PAGE_SETUP_LIST_COL_PAGE_SETUP, &list_page_setup, -1);
	  if (list_page_setup == NULL)
	    continue;
	  
	  if ((size_only && page_setup_is_same_size (page_setup, list_page_setup)) ||
	      (!size_only && page_setup_is_equal (page_setup, list_page_setup)))
	    {
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	      gtk_combo_box_set_active_iter (GTK_COMBO_BOX (priv->paper_size_combo),
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					     &iter);
	      g_object_unref (list_page_setup);
	      return TRUE;
	    }
	      
	  g_object_unref (list_page_setup);
	  
	} while (gtk_tree_model_iter_next (model, &iter));
    }

  if (add_item)
    {
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      gtk_list_store_append (priv->page_setup_list, &iter);
      gtk_list_store_set (priv->page_setup_list, &iter,
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			  PAGE_SETUP_LIST_COL_IS_SEPARATOR, TRUE,
			  -1);
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      gtk_list_store_append (priv->page_setup_list, &iter);
      gtk_list_store_set (priv->page_setup_list, &iter,
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			  PAGE_SETUP_LIST_COL_PAGE_SETUP, page_setup,
			  -1);
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      gtk_combo_box_set_active_iter (GTK_COMBO_BOX (priv->paper_size_combo),
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				     &iter);
      return TRUE;
    }

  return FALSE;
}

static void
fill_custom_paper_sizes (GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkTreeIter iter, paper_iter;
  GtkTreeModel *model;

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  model = GTK_TREE_MODEL (priv->custom_paper_list);
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  if (gtk_tree_model_get_iter_first (model, &iter))
    {
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      gtk_list_store_append (priv->page_setup_list, &paper_iter);
      gtk_list_store_set (priv->page_setup_list, &paper_iter,
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			  PAGE_SETUP_LIST_COL_IS_SEPARATOR, TRUE,
			  -1);
      do
	{
	  GtkPageSetup *page_setup;
	  gtk_tree_model_get (model, &iter, 0, &page_setup, -1);

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	  gtk_list_store_append (priv->page_setup_list, &paper_iter);
	  gtk_list_store_set (priv->page_setup_list, &paper_iter,
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			      PAGE_SETUP_LIST_COL_PAGE_SETUP, page_setup,
			      -1);

	  g_object_unref (page_setup);
	} while (gtk_tree_model_iter_next (model, &iter));
    }
  
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  gtk_list_store_append (priv->page_setup_list, &paper_iter);
  gtk_list_store_set (priv->page_setup_list, &paper_iter,
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                      PAGE_SETUP_LIST_COL_IS_SEPARATOR, TRUE,
                      -1);
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  gtk_list_store_append (priv->page_setup_list, &paper_iter);
  gtk_list_store_set (priv->page_setup_list, &paper_iter,
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                      PAGE_SETUP_LIST_COL_PAGE_SETUP, NULL,
                      -1);
}

static void
fill_paper_sizes_from_printer (GtkPageSetupUnixDialog *dialog,
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			       GtkPrinter             *printer)
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{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GList *list, *l;
  GtkPageSetup *current_page_setup, *page_setup;
  GtkPaperSize *paper_size;
  GtkTreeIter iter;
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  gint i;
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  gtk_list_store_clear (priv->page_setup_list);
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  if (printer == NULL)
    {
      for (i = 0; i < G_N_ELEMENTS (common_paper_sizes); i++)
	{
	  page_setup = gtk_page_setup_new ();
	  paper_size = gtk_paper_size_new (common_paper_sizes[i]);
	  gtk_page_setup_set_paper_size_and_default_margins (page_setup, paper_size);
	  gtk_paper_size_free (paper_size);
	  
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	  gtk_list_store_append (priv->page_setup_list, &iter);
	  gtk_list_store_set (priv->page_setup_list, &iter,
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			      PAGE_SETUP_LIST_COL_PAGE_SETUP, page_setup,
			      -1);
	  g_object_unref (page_setup);
	}
    }
  else
    {
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      list = gtk_printer_list_papers (printer);
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      /* TODO: We should really sort this list so interesting size
	 are at the top */
      for (l = list; l != NULL; l = l->next)
	{
	  page_setup = l->data;
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	  gtk_list_store_append (priv->page_setup_list, &iter);
	  gtk_list_store_set (priv->page_setup_list, &iter,
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			      PAGE_SETUP_LIST_COL_PAGE_SETUP, page_setup,
			      -1);
	  g_object_unref (page_setup);
	}
      g_list_free (list);
    }

  fill_custom_paper_sizes (dialog);
  
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  current_page_setup = NULL;

  /* When selecting a different printer, select its default paper size */
  if (printer != NULL)
    current_page_setup = gtk_printer_get_default_page_size (printer);

  if (current_page_setup == NULL)
    current_page_setup = get_current_page_setup (dialog);

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  if (!set_paper_size (dialog, current_page_setup, FALSE, FALSE))
    set_paper_size (dialog, current_page_setup, TRUE, TRUE);
  
  if (current_page_setup)
    g_object_unref (current_page_setup);
}

static void
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printer_changed_finished_callback (GtkPrinter             *printer,
				   gboolean                success,
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				   GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;

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  g_signal_handler_disconnect (priv->request_details_printer,
			       priv->request_details_tag);
  g_object_unref (priv->request_details_printer);
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  priv->request_details_tag = 0;
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  priv->request_details_printer = NULL;
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  if (success)
    fill_paper_sizes_from_printer (dialog, printer);

}

static void
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printer_changed_callback (GtkComboBox            *combo_box,
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			  GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkPrinter *printer;
  GtkTreeIter iter;

  /* If we're waiting for a specific printer but the user changed
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   * to another printer, cancel that wait. 
   */
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  if (priv->waiting_for_printer)
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    {
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      g_free (priv->waiting_for_printer);
      priv->waiting_for_printer = NULL;
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    }
  
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  if (priv->request_details_tag)
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    {
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      g_signal_handler_disconnect (priv->request_details_printer,
				   priv->request_details_tag);
      g_object_unref (priv->request_details_printer);
      priv->request_details_printer = NULL;
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      priv->request_details_tag = 0;
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    }
  
  if (gtk_combo_box_get_active_iter (combo_box, &iter))
    {
      gtk_tree_model_get (gtk_combo_box_get_model (combo_box), &iter,
			  PRINTER_LIST_COL_PRINTER, &printer, -1);

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      if (printer == NULL || gtk_printer_has_details (printer))
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	fill_paper_sizes_from_printer (dialog, printer);
      else
	{
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	  priv->request_details_printer = g_object_ref (printer);
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	  priv->request_details_tag =
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	    g_signal_connect (printer, "details-acquired",
			      G_CALLBACK (printer_changed_finished_callback), dialog);
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	  gtk_printer_request_details (printer);
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	}

      if (printer)
	g_object_unref (printer);

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      if (priv->print_settings)
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	{
	  const char *name = NULL;

	  if (printer)
	    name = gtk_printer_get_name (printer);
	  
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	  gtk_print_settings_set (priv->print_settings,
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				  "format-for-printer", name);
	}
    }
}

/* We do this munging because we don't want to show zero digits
   after the decimal point, and not to many such digits if they
   are nonzero. I wish printf let you specify max precision for %f... */
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static gchar *
double_to_string (gdouble d, 
		  GtkUnit unit)
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{
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  gchar *val, *p;
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  struct lconv *locale_data;
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  const gchar *decimal_point;
  gint decimal_point_len;
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  locale_data = localeconv ();
  decimal_point = locale_data->decimal_point;
  decimal_point_len = strlen (decimal_point);
  
  /* Max two decimal digits for inch, max one for mm */
  if (unit == GTK_UNIT_INCH)
    val = g_strdup_printf ("%.2f", d);
  else
    val = g_strdup_printf ("%.1f", d);

  if (strstr (val, decimal_point))
    {
      p = val + strlen (val) - 1;
      while (*p == '0')
        p--;
      if (p - val + 1 >= decimal_point_len &&
	  strncmp (p - (decimal_point_len - 1), decimal_point, decimal_point_len) == 0)
        p -= decimal_point_len;
      p[1] = '\0';
    }

  return val;
}

static void
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paper_size_changed (GtkComboBox            *combo_box,
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		    GtkPageSetupUnixDialog *dialog)
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{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkTreeIter iter;
  GtkPageSetup *page_setup, *last_page_setup;
  GtkUnit unit;
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  gchar *str, *w, *h;
  gchar *top, *bottom, *left, *right;
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  GtkLabel *label;
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  const gchar *unit_str;
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  label = GTK_LABEL (priv->paper_size_label);
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  if (gtk_combo_box_get_active_iter (combo_box, &iter))
    {
      gtk_tree_model_get (gtk_combo_box_get_model (combo_box),
			  &iter, PAGE_SETUP_LIST_COL_PAGE_SETUP, &page_setup, -1);

      if (page_setup == NULL)
	{
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          /* Change from "manage" menu item to last value */
          if (priv->last_setup)
            last_page_setup = g_object_ref (priv->last_setup);
          else
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	    last_page_setup = gtk_page_setup_new (); /* "good" default */
	  set_paper_size (dialog, last_page_setup, FALSE, TRUE);
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          g_object_unref (last_page_setup);

          /* And show the custom paper dialog */
          show_custom_paper_dialog (dialog);

          return;
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	}

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      if (priv->last_setup)
	g_object_unref (priv->last_setup);
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      priv->last_setup = g_object_ref (page_setup);
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      unit = get_default_user_units ();

      if (unit == GTK_UNIT_MM)
	unit_str = _("mm");
      else
	unit_str = _("inch");
	

      w = double_to_string (gtk_page_setup_get_paper_width (page_setup, unit),
			    unit);
      h = double_to_string (gtk_page_setup_get_paper_height (page_setup, unit),
			    unit);
      str = g_strdup_printf ("%s x %s %s", w, h, unit_str);
      g_free (w);
      g_free (h);
      
      gtk_label_set_text (label, str);
      g_free (str);

      top = double_to_string (gtk_page_setup_get_top_margin (page_setup, unit), unit);
      bottom = double_to_string (gtk_page_setup_get_bottom_margin (page_setup, unit), unit);
      left = double_to_string (gtk_page_setup_get_left_margin (page_setup, unit), unit);
      right = double_to_string (gtk_page_setup_get_right_margin (page_setup, unit), unit);

      str = g_strdup_printf (_("Margins:\n"
			       " Left: %s %s\n"
			       " Right: %s %s\n"
			       " Top: %s %s\n"
			       " Bottom: %s %s"
			       ),
			     left, unit_str,
			     right, unit_str,
			     top, unit_str,
			     bottom, unit_str);
      g_free (top);
      g_free (bottom);
      g_free (left);
      g_free (right);
      
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      gtk_widget_set_tooltip_text (priv->paper_size_label, str);
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      g_free (str);
      
      g_object_unref (page_setup);
    }
  else
    {
      gtk_label_set_text (label, "");
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      gtk_widget_set_tooltip_text (priv->paper_size_label, NULL);
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      if (priv->last_setup)
	g_object_unref (priv->last_setup);
      priv->last_setup = NULL;
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    }
}

static void
page_name_func (GtkCellLayout   *cell_layout,
		GtkCellRenderer *cell,
		GtkTreeModel    *tree_model,
		GtkTreeIter     *iter,
		gpointer         data)
{
  GtkPageSetup *page_setup;
  GtkPaperSize *paper_size;
  
  gtk_tree_model_get (tree_model, iter,
		      PAGE_SETUP_LIST_COL_PAGE_SETUP, &page_setup, -1);
  if (page_setup)
    {
      paper_size = gtk_page_setup_get_paper_size (page_setup);
      g_object_set (cell, "text",  gtk_paper_size_get_display_name (paper_size), NULL);
      g_object_unref (page_setup);
    }
  else
    g_object_set (cell, "text",  _("Manage Custom Sizes..."), NULL);
      
}

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static GtkWidget *
create_radio_button (GSList      *group,
		     const gchar *stock_id)
{
  GtkWidget *radio_button, *image, *label, *hbox;
  GtkStockItem item;

  radio_button = gtk_radio_button_new (group);
  image = gtk_image_new_from_stock (stock_id, GTK_ICON_SIZE_LARGE_TOOLBAR);
  gtk_stock_lookup (stock_id, &item);
  label = gtk_label_new (item.label);
  hbox = gtk_hbox_new (0, 6);
  gtk_container_add (GTK_CONTAINER (radio_button), hbox);
  gtk_container_add (GTK_CONTAINER (hbox), image);
  gtk_container_add (GTK_CONTAINER (hbox), label);

  gtk_widget_show_all (radio_button);

  return radio_button;
}

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static void
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populate_dialog (GtkPageSetupUnixDialog *ps_dialog)
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{
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  GtkPageSetupUnixDialogPrivate *priv = ps_dialog->priv;
  GtkDialog *dialog = GTK_DIALOG (ps_dialog);
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  GtkWidget *table, *label, *combo, *radio_button;
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  GtkCellRenderer *cell;

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  gtk_window_set_resizable (GTK_WINDOW (dialog), FALSE);

  gtk_dialog_set_has_separator (dialog, FALSE);
  gtk_container_set_border_width (GTK_CONTAINER (dialog), 5);
  gtk_box_set_spacing (GTK_BOX (dialog->vbox), 2); /* 2 * 5 + 2 = 12 */
  gtk_container_set_border_width (GTK_CONTAINER (dialog->action_area), 5);
  gtk_box_set_spacing (GTK_BOX (dialog->action_area), 6);

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  table = gtk_table_new (5, 4, FALSE);
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  gtk_table_set_row_spacings (GTK_TABLE (table), 6);
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  gtk_table_set_col_spacings (GTK_TABLE (table), 12);
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  gtk_container_set_border_width (GTK_CONTAINER (table), 5);
  gtk_box_pack_start (GTK_BOX (dialog->vbox), table, TRUE, TRUE, 0);
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  gtk_widget_show (table);

  label = gtk_label_new_with_mnemonic (_("_Format for:"));
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  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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  gtk_table_attach (GTK_TABLE (table), label,
		    0, 1, 0, 1,
		    GTK_FILL, 0, 0, 0);
  gtk_widget_show (label);

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  combo = gtk_combo_box_new_with_model (GTK_TREE_MODEL (priv->printer_list));
  priv->printer_combo = combo;
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  cell = gtk_cell_renderer_text_new ();
  gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), cell, TRUE);
  gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (combo), cell,
                                  "markup", PRINTER_LIST_COL_NAME,
                                  NULL);

  gtk_table_attach (GTK_TABLE (table), combo,
		    1, 4, 0, 1,
		    GTK_FILL | GTK_EXPAND, 0, 0, 0);
  gtk_widget_show (combo);
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  gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo);
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  label = gtk_label_new_with_mnemonic (_("_Paper size:"));
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  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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  gtk_table_attach (GTK_TABLE (table), label,
		    0, 1, 1, 2,
		    GTK_FILL, 0, 0, 0);
  gtk_widget_show (label);

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  combo = gtk_combo_box_new_with_model (GTK_TREE_MODEL (priv->page_setup_list));
  priv->paper_size_combo = combo;
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  gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (combo), 
					paper_size_row_is_separator, NULL, NULL);
  
  cell = gtk_cell_renderer_text_new ();
  gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (combo), cell, TRUE);
  gtk_cell_layout_set_cell_data_func (GTK_CELL_LAYOUT (combo), cell,
				      page_name_func, NULL, NULL);

  gtk_table_attach (GTK_TABLE (table), combo,
		    1, 4, 1, 2,
		    GTK_FILL | GTK_EXPAND, 0, 0, 0);
  gtk_widget_show (combo);
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  gtk_label_set_mnemonic_widget (GTK_LABEL (label), combo);
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  label = gtk_label_new (NULL);
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  priv->paper_size_label = label;
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  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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  gtk_table_attach (GTK_TABLE (table), label,
		    1, 4, 2, 3,
		    GTK_FILL, 0, 0, 0);
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  gtk_widget_show (label);

  label = gtk_label_new_with_mnemonic (_("_Orientation:"));
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  gtk_misc_set_alignment (GTK_MISC (label), 0.0, 0.5);
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  gtk_table_attach (GTK_TABLE (table), label,
		    0, 1, 3, 4,
		    GTK_FILL, 0, 0, 0);
  gtk_widget_show (label);

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  radio_button = create_radio_button (NULL, GTK_STOCK_ORIENTATION_PORTRAIT);
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  priv->portrait_radio = radio_button;
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  gtk_table_attach (GTK_TABLE (table), radio_button,
		    1, 2, 3, 4,
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		    GTK_EXPAND|GTK_FILL, 0, 0, 0);
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  gtk_label_set_mnemonic_widget (GTK_LABEL (label), radio_button);
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  radio_button = create_radio_button (gtk_radio_button_get_group (GTK_RADIO_BUTTON (radio_button)),
				      GTK_STOCK_ORIENTATION_REVERSE_PORTRAIT);
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  priv->reverse_portrait_radio = radio_button;
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  gtk_table_attach (GTK_TABLE (table), radio_button,
		    2, 3, 3, 4,
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		    GTK_EXPAND|GTK_FILL, 0, 0, 0);

  radio_button = create_radio_button (gtk_radio_button_get_group (GTK_RADIO_BUTTON (radio_button)),
				      GTK_STOCK_ORIENTATION_LANDSCAPE);
  priv->landscape_radio = radio_button;
  gtk_table_attach (GTK_TABLE (table), radio_button,
		    1, 2, 4, 5,
		    GTK_EXPAND|GTK_FILL, 0, 0, 0);
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  gtk_widget_show (radio_button);

  gtk_table_set_row_spacing (GTK_TABLE (table), 3, 0);
  
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  radio_button = create_radio_button (gtk_radio_button_get_group (GTK_RADIO_BUTTON (radio_button)),
				      GTK_STOCK_ORIENTATION_REVERSE_LANDSCAPE);
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  priv->reverse_landscape_radio = radio_button;
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  gtk_table_attach (GTK_TABLE (table), radio_button,
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		    2, 3, 4, 5,
		    GTK_EXPAND|GTK_FILL, 0, 0, 0);

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  g_signal_connect (priv->paper_size_combo, "changed", G_CALLBACK (paper_size_changed), ps_dialog);
  g_signal_connect (priv->printer_combo, "changed", G_CALLBACK (printer_changed_callback), ps_dialog);
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  gtk_combo_box_set_active (GTK_COMBO_BOX (priv->printer_combo), 0);
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  load_print_backends (ps_dialog);
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}

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/**
 * gtk_page_setup_unix_dialog_new:
 * @title: the title of the dialog, or %NULL
 * @parent: transient parent of the dialog, or %NULL
 *
 * Creates a new page setup dialog.
 *
 * Returns: the new #GtkPageSetupUnixDialog
 *
 * Since: 2.10
 */
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GtkWidget *
gtk_page_setup_unix_dialog_new (const gchar *title,
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				GtkWindow   *parent)
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{
  GtkWidget *result;

  if (title == NULL)
    title = _("Page Setup");
  
  result = g_object_new (GTK_TYPE_PAGE_SETUP_UNIX_DIALOG,
                         "title", title,
                         NULL);

  if (parent)
    gtk_window_set_transient_for (GTK_WINDOW (result), parent);

  return result;
}

static GtkPageOrientation
get_orientation (GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;

  if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->portrait_radio)))
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    return GTK_PAGE_ORIENTATION_PORTRAIT;
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  if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->landscape_radio)))
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    return GTK_PAGE_ORIENTATION_LANDSCAPE;
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  if (gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (priv->reverse_landscape_radio)))
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    return GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE;
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  return GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT;
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}

static void
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set_orientation (GtkPageSetupUnixDialog *dialog, 
		 GtkPageOrientation      orientation)
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{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;

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  switch (orientation)
    {
    case GTK_PAGE_ORIENTATION_REVERSE_PORTRAIT:
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      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->reverse_portrait_radio), TRUE);
      break;
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    case GTK_PAGE_ORIENTATION_PORTRAIT:
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      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->portrait_radio), TRUE);
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      break;
    case GTK_PAGE_ORIENTATION_LANDSCAPE:
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      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->landscape_radio), TRUE);
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      break;
    case GTK_PAGE_ORIENTATION_REVERSE_LANDSCAPE:
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      gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->reverse_landscape_radio), TRUE);
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      break;
    }
}

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/**
 * gtk_page_setup_unix_dialog_set_page_setup:
 * @dialog: a #GtkPageSetupUnixDialog
 * @page_setup: a #GtkPageSetup
 * 
 * Sets the #GtkPageSetup from which the page setup
 * dialog takes its values.
 *
 * Since: 2.10
 **/
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void
gtk_page_setup_unix_dialog_set_page_setup (GtkPageSetupUnixDialog *dialog,
					   GtkPageSetup           *page_setup)
{
  if (page_setup)
    {
      set_paper_size (dialog, page_setup, FALSE, TRUE);
      set_orientation (dialog, gtk_page_setup_get_orientation (page_setup));
    }
}

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/**
 * gtk_page_setup_unix_dialog_get_page_setup:
 * @dialog: a #GtkPageSetupUnixDialog
 * 
 * Gets the currently selected page setup from the dialog. 
 * 
 * Returns: the current page setup 
 *
 * Since: 2.10
 **/
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GtkPageSetup *
gtk_page_setup_unix_dialog_get_page_setup (GtkPageSetupUnixDialog *dialog)
{
  GtkPageSetup *page_setup;
  
  page_setup = get_current_page_setup (dialog);

  gtk_page_setup_set_orientation (page_setup, get_orientation (dialog));

  return page_setup;
}

static gboolean
set_active_printer (GtkPageSetupUnixDialog *dialog,
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		    const gchar            *printer_name)
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{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  GtkTreeModel *model;
  GtkTreeIter iter;
  GtkPrinter *printer;

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  model = GTK_TREE_MODEL (priv->printer_list);
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  if (gtk_tree_model_get_iter_first (model, &iter))
    {
      do
	{
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	  gtk_tree_model_get (GTK_TREE_MODEL (priv->printer_list), &iter,
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			      PRINTER_LIST_COL_PRINTER, &printer, -1);
	  if (printer == NULL)
	    continue;
	  
	  if (strcmp (gtk_printer_get_name (printer), printer_name) == 0)
	    {
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	      gtk_combo_box_set_active_iter (GTK_COMBO_BOX (priv->printer_combo),
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					     &iter);
	      g_object_unref (printer);
	      return TRUE;
	    }
	      
	  g_object_unref (printer);
	  
	} while (gtk_tree_model_iter_next (model, &iter));
    }
  
  return FALSE;
}

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/**
 * gtk_page_setup_unix_dialog_set_print_settings:
 * @dialog: a #GtkPageSetupUnixDialog
 * @print_settings: a #GtkPrintSettings
 * 
 * Sets the #GtkPrintSettings from which the page setup dialog
 * takes its values.
 * 
 * Since: 2.10
 **/
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void
gtk_page_setup_unix_dialog_set_print_settings (GtkPageSetupUnixDialog *dialog,
					       GtkPrintSettings       *print_settings)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;
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  const gchar *format_for_printer;
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  if (priv->print_settings == print_settings) return;

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  if (priv->print_settings)
    g_object_unref (priv->print_settings);
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  priv->print_settings = print_settings;
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  if (print_settings)
    {
      g_object_ref (print_settings);

      format_for_printer = gtk_print_settings_get (print_settings, "format-for-printer");

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      /* Set printer if in list, otherwise set when 
       * that printer is added 
       */
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      if (format_for_printer &&
	  !set_active_printer (dialog, format_for_printer))
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	priv->waiting_for_printer = g_strdup (format_for_printer); 
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    }
}

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/**
 * gtk_page_setup_unix_dialog_get_print_settings:
 * @dialog: a #GtkPageSetupUnixDialog
 * 
 * Gets the current print settings from the dialog.
 * 
 * Returns: the current print settings
 *
 * Since: 2.10
 **/
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GtkPrintSettings *
gtk_page_setup_unix_dialog_get_print_settings (GtkPageSetupUnixDialog *dialog)
{
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  GtkPageSetupUnixDialogPrivate *priv = dialog->priv;

  return priv->print_settings;
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}

static GtkWidget *
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wrap_in_frame (const gchar *label, 
               GtkWidget   *child)
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{
  GtkWidget *frame, *alignment, *label_widget;
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  gchar *bold_text;
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  label_widget = gtk_label_new (NULL);
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  gtk_misc_set_alignment (GTK_MISC (label_widget), 0.0, 0.5);
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  gtk_widget_show (label_widget);
  
  bold_text = g_markup_printf_escaped ("<b>%s</b>", label);
  gtk_label_set_markup (GTK_LABEL (label_widget), bold_text);
  g_free (bold_text);
  
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  frame = gtk_vbox_new (FALSE, 6);
  gtk_box_pack_start (GTK_BOX (frame), label_widget, FALSE, FALSE, 0);
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  alignment = gtk_alignment_new (0.0, 0.0, 1.0, 1.0);
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  gtk_alignment_set_padding (GTK_ALIGNMENT (alignment),
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			     0, 0, 12, 0);
  gtk_box_pack_start (GTK_BOX (frame), alignment, FALSE, FALSE, 0);
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  gtk_container_add (GTK_CONTAINER (alignment), child);

  gtk_widget_show (frame);
  gtk_widget_show (alignment);
  
  return frame;
}

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typedef struct 
{
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  GtkUnit display_unit;
  GtkWidget *spin_button;
} UnitWidget;

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typedef struct 
{
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  GtkPageSetupUnixDialog *dialog;
  GtkWidget *treeview;
  GtkTreeViewColumn *text_column;
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  GtkWidget *values_box;
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  GtkWidget *printer_combo;
  GtkWidget *width_widget;
  GtkWidget *height_widget;
  GtkWidget *top_widget;
  GtkWidget *bottom_widget;
  GtkWidget *left_widget;
  GtkWidget *right_widget;
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  gulong printer_inserted_tag;
  gulong printer_removed_tag;
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  guint request_details_tag;
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  GtkPrinter *request_details_printer;
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  guint non_user_change : 1;
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} CustomPaperDialog;

static void unit_widget_changed (CustomPaperDialog *data);

static GtkWidget *
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new_unit_widget (CustomPaperDialog *dialog, 
		 GtkUnit            unit, 
		 GtkWidget         *mnemonic_label)
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{
  GtkWidget *hbox, *button, *label;
  UnitWidget *data;

  data = g_new0 (UnitWidget, 1);
  data->display_unit = unit;
  
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  hbox = gtk_hbox_new (FALSE, 6);
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  button = gtk_spin_button_new_with_range (0.0, 9999.0, 1);
  if (unit == GTK_UNIT_INCH)
    gtk_spin_button_set_digits (GTK_SPIN_BUTTON (button), 2);
  else
    gtk_spin_button_set_digits (GTK_SPIN_BUTTON (button), 1);

  gtk_box_pack_start (GTK_BOX (hbox), button, TRUE, TRUE, 0);
  gtk_widget_show (button);

  data->spin_button = button;

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  g_signal_connect_swapped (button, "value-changed",
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			    G_CALLBACK (unit_widget_changed), dialog);
  
  if (unit == GTK_UNIT_INCH)
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    label = gtk_label_new (_("inch"));
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  else
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    label = gtk_label_new (_("mm"));
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  gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
  gtk_widget_show (label);
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  gtk_label_set_mnemonic_widget (GTK_LABEL (mnemonic_label), button);
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  g_object_set_data_full (G_OBJECT (hbox), "unit-data", data, g_free);
  
  return hbox;
}

static double
unit_widget_get (GtkWidget *unit_widget)
{
  UnitWidget *data = g_object_get_data (G_OBJECT (unit_widget), "unit-data");
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  return _gtk_print_convert_to_mm (gtk_spin_button_get_value (GTK_SPIN_BUTTON (data->spin_button)),
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				   data->display_unit);
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}

static void
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unit_widget_set (GtkWidget *unit_widget, 
		 gdouble    value)
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{
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  UnitWidget *data;
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  data = g_object_get_data (G_OBJECT (unit_widget), "unit-data");
  gtk_spin_button_set_value (GTK_SPIN_BUTTON (data->spin_button),
			     _gtk_print_convert_from_mm (value, data->display_unit));
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}

static void
custom_paper_printer_data_func (GtkCellLayout   *cell_layout,
				GtkCellRenderer *cell,
				GtkTreeModel    *tree_model,
				GtkTreeIter     *iter,
				gpointer         data)
{
  GtkPrinter *printer;
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  gtk_tree_model_get (tree_model, iter,
		      PRINTER_LIST_COL_PRINTER, &printer, -1);

  if (printer)
    g_object_set (cell, "text",  gtk_printer_get_name (printer), NULL);
  else
    g_object_set (cell, "text",  _("Margins from Printer..."), NULL);
  
  if (printer)
    g_object_unref (printer);
}

static void
update_combo_sensitivity_from_printers (CustomPaperDialog *data)
{
  GtkTreeIter iter;
  gboolean sensitive;
  GtkTreeSelection *selection;
  GtkTreeModel *model;

  sensitive = FALSE;
  model = GTK_TREE_MODEL (data->dialog->priv->printer_list);
  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (data->treeview));
  if (gtk_tree_model_get_iter_first (model, &iter) &&
      gtk_tree_model_iter_next (model, &iter) &&
      gtk_tree_selection_get_selected (selection, NULL, &iter))
    sensitive = TRUE;

  gtk_widget_set_sensitive (data->printer_combo, sensitive);
}

static void
update_custom_widgets_from_list (CustomPaperDialog *data)
{
  GtkTreeSelection *selection;
  GtkTreeModel *model;
  GtkTreeIter iter;
  GtkPageSetup *page_setup;
  
  model = gtk_tree_view_get_model (GTK_TREE_VIEW (data->treeview));
  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (data->treeview));

  data->non_user_change = TRUE;
  if (gtk_tree_selection_get_selected (selection, NULL, &iter))
    {
      gtk_tree_model_get (model, &iter, 0, &page_setup, -1);
      
      unit_widget_set (data->width_widget,
		       gtk_page_setup_get_paper_width (page_setup, GTK_UNIT_MM));
      unit_widget_set (data->height_widget, 
		       gtk_page_setup_get_paper_height (page_setup, GTK_UNIT_MM));
      unit_widget_set (data->top_widget,
		       gtk_page_setup_get_top_margin (page_setup, GTK_UNIT_MM));
      unit_widget_set (data->bottom_widget, 
		       gtk_page_setup_get_bottom_margin (page_setup, GTK_UNIT_MM));
      unit_widget_set (data->left_widget,
		       gtk_page_setup_get_left_margin (page_setup, GTK_UNIT_MM));
      unit_widget_set (data->right_widget,
		       gtk_page_setup_get_right_margin (page_setup, GTK_UNIT_MM));
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      gtk_widget_set_sensitive (data->values_box, TRUE);
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    }
  else
    {
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      gtk_widget_set_sensitive (data->values_box, FALSE);
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    }

  update_combo_sensitivity_from_printers (data);
  data->non_user_change = FALSE;
}

static void
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selected_custom_paper_changed (GtkTreeSelection  *selection,
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			       CustomPaperDialog *data)
{
  update_custom_widgets_from_list (data);
}

static void
unit_widget_changed (CustomPaperDialog *data)
{
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  gdouble w, h, top, bottom, left, right;
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  GtkTreeSelection *selection;
  GtkTreeIter iter;
  GtkPageSetup *page_setup;
  GtkPaperSize *paper_size;

  if (data->non_user_change)
    return;
  
  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (data->treeview));

  if (gtk_tree_selection_get_selected (selection, NULL, &iter))
    {
      gtk_tree_model_get (GTK_TREE_MODEL (data->dialog->priv->custom_paper_list), &iter, 0, &page_setup, -1);

      w = unit_widget_get (data->width_widget);
      h = unit_widget_get (data->height_widget);

      paper_size = gtk_page_setup_get_paper_size (page_setup);
      gtk_paper_size_set_size (paper_size, w, h, GTK_UNIT_MM);
      
      top = unit_widget_get (data->top_widget);
      bottom = unit_widget_get (data->bottom_widget);
      left = unit_widget_get (data->left_widget);
      right = unit_widget_get (data->right_widget);

      gtk_page_setup_set_top_margin (page_setup, top, GTK_UNIT_MM);
      gtk_page_setup_set_bottom_margin (page_setup, bottom, GTK_UNIT_MM);
      gtk_page_setup_set_left_margin (page_setup, left, GTK_UNIT_MM);
      gtk_page_setup_set_right_margin (page_setup, right, GTK_UNIT_MM);
      
      g_object_unref (page_setup);
    }
}

static gboolean
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custom_paper_name_used (CustomPaperDialog *data, 
			const gchar       *name)
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{
  GtkTreeModel *model;
  GtkTreeIter iter;
  GtkPageSetup *page_setup;
  GtkPaperSize *paper_size;
  
  model = gtk_tree_view_get_model (GTK_TREE_VIEW (data->treeview));
	  
  if (gtk_tree_model_get_iter_first (model, &iter))
    {
      do
	{
	  gtk_tree_model_get (model, &iter, 0, &page_setup, -1);
	  paper_size = gtk_page_setup_get_paper_size (page_setup);
	  if (strcmp (name,
		      gtk_paper_size_get_name (paper_size)) == 0)
	    {
	      g_object_unref (page_setup);
	      return TRUE;
	    }
	  g_object_unref (page_setup);
	} while (gtk_tree_model_iter_next (model, &iter));
    }
  
  return FALSE;
}

static void
add_custom_paper (CustomPaperDialog *data)
{
  GtkListStore *store;
  GtkPageSetup *page_setup;
  GtkPaperSize *paper_size;
  GtkTreeSelection *selection;
  GtkTreePath *path;
  GtkTreeIter iter;
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  gchar *name;
  gint i;
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  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (data->treeview));
  store = data->dialog->priv->custom_paper_list;

  i = 1;
  name = NULL;
  do
    {
      g_free (name);
      name = g_strdup_printf (_("Custom Size %d"), i);
      i++;
    } while (custom_paper_name_used (data, name));

  page_setup = gtk_page_setup_new ();
  paper_size = gtk_paper_size_new_custom (name, name,
					  gtk_page_setup_get_paper_width (page_setup, GTK_UNIT_MM),
					  gtk_page_setup_get_paper_height (page_setup, GTK_UNIT_MM),
					  GTK_UNIT_MM);
  gtk_page_setup_set_paper_size (page_setup, paper_size);
  gtk_paper_size_free (paper_size);
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  gtk_list_store_append (store, &iter);
  gtk_list_store_set (store, &iter, 0, page_setup, -1);
  g_object_unref (page_setup);

  gtk_tree_selection_select_iter (selection, &iter);
  path = gtk_tree_model_get_path (GTK_TREE_MODEL (store), &iter);
  gtk_widget_grab_focus (data->treeview);
  gtk_tree_view_set_cursor (GTK_TREE_VIEW (data->treeview), path,
			    data->text_column, TRUE);
  gtk_tree_path_free (path);
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  g_free (name);
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}

static void
remove_custom_paper (CustomPaperDialog *data)
{
  GtkTreeSelection *selection;
  GtkTreeIter iter;
  GtkListStore *store;
  
  selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (data->treeview));
  store = data->dialog->priv->custom_paper_list;

  if (gtk_tree_selection_get_selected (selection, NULL, &iter))
    {
      GtkTreePath *path = gtk_tree_model_get_path (GTK_TREE_MODEL (store), &iter);
      gtk_list_store_remove (store, &iter);
      
      if (gtk_tree_model_get_iter (GTK_TREE_MODEL (store), &iter, path))
	gtk_tree_selection_select_iter (selection, &iter);
      else if (gtk_tree_path_prev (path) && gtk_tree_model_get_iter (GTK_TREE_MODEL (store), &iter, path))
	gtk_tree_selection_select_iter (selection, &iter);
      
      gtk_tree_path_free (path);