Imported Debian patch 0.84-2debian/0.84-2

1 files changed, 1448 insertions, 0 deletions

diff --git a/src/xsane-viewer.c b/src/xsane-viewer.c
new file mode 100644
index 0000000..e9a8dd9
--- /dev/null
+++ b/src/xsane-viewer.c
@@ -0,0 +1,1448 @@
+/* xsane -- a graphical (X11, gtk) scanner-oriented SANE frontend
+ 
+   xsane-viewer.c
+ 
+   Oliver Rauch <Oliver.Rauch@rauch-domain.de>
+   Copyright (C) 1998-2002 Oliver Rauch
+   This file is part of the XSANE package.
+ 
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+ 
+#include "xsane.h"
+/* #include <sys/param.h> */
+#include "xsane-back-gtk.h"
+#include "xsane-front-gtk.h"
+#include "xsane-preferences.h"
+#include "xsane-viewer.h"
+#include "xsane-gamma.h"
+#include "xsane-icons.h"
+#include "xsane-save.h"
+#include <gdk/gdkkeysyms.h>
+#include <sys/wait.h>
+ 
+ 
+#ifndef PATH_MAX
+# define PATH_MAX       1024
+#endif
+ 
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static int xsane_viewer_zoom[] = {35, 50, 71, 100, 141, 200, 282, 400 };
+#define XSANE_VIEWER_ZOOM_ITEMS 8
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static gint xsane_viewer_close_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_dialog_cancel(GtkWidget *window, gpointer data);
+static void xsane_viewer_save_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_ocr_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_clone_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_despeckle_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_blur_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_scale_image(GtkWidget *window, gpointer data);
+static void xsane_viewer_despeckle_image(GtkWidget *window, gpointer data);
+static void xsane_viewer_blur_image(GtkWidget *window, gpointer data);
+static void xsane_viewer_rotate(Viewer *v, int rotation);
+static void xsane_viewer_rotate90_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_rotate180_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_rotate270_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_mirror_x_callback(GtkWidget *window, gpointer data);
+static void xsane_viewer_mirror_y_callback(GtkWidget *window, gpointer data);
+static GtkWidget *xsane_viewer_files_build_menu(Viewer *v);
+static GtkWidget *xsane_viewer_filters_build_menu(Viewer *v);
+static int xsane_viewer_read_image(Viewer *v);
+Viewer *xsane_viewer_new(char *filename, int reduce_to_lineart, char *output_filename);
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static gint xsane_viewer_close_callback(GtkWidget *widget, gpointer data)
+{
+ Viewer *v, *list, **prev_list;
+
+  v = (Viewer*) gtk_object_get_data(GTK_OBJECT(widget), "Viewer");
+
+  DBG(DBG_proc, "xsane_viewer_close_callback\n");
+
+  if (!v->image_saved)
+  {
+   char buf[256];
+
+    snprintf(buf, sizeof(buf), WARN_VIEWER_IMAGE_NOT_SAVED);
+    if (xsane_back_gtk_decision(ERR_HEADER_WARNING, (gchar **) warning_xpm, buf, BUTTON_DO_NOT_CLOSE, BUTTON_DISCARD_IMAGE, TRUE /* wait */))
+    {
+      return TRUE;
+    } 
+  }
+
+  remove(v->filename);
+
+  gtk_widget_destroy(v->top);
+
+
+  list = xsane.viewer_list;
+  prev_list = &xsane.viewer_list;
+
+  while (list)
+  {
+    if (list == v)
+    {
+      DBG(DBG_info, "removing viewer from viewer list\n");
+      *prev_list = list->next_viewer;
+      break;
+    }
+
+    prev_list = &list->next_viewer;
+    list = list->next_viewer;
+  }
+
+  free(v);
+
+ return TRUE;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_dialog_cancel(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_save_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+ char outputfilename[1024];
+ char *inputfilename;
+ char windowname[256];
+ int output_format;
+
+  DBG(DBG_proc, "xsane_viewer_save_callback\n");
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  if (v->output_filename)
+  {
+    strncpy(outputfilename, v->output_filename, sizeof(outputfilename));
+  }
+  else
+  {
+   int abort = 0;
+
+    strcpy(outputfilename, preferences.filename);
+ 
+    snprintf(windowname, sizeof(windowname), "%s %s %s", xsane.prog_name, WINDOW_VIEWER_OUTPUT_FILENAME, xsane.device_text);
+ 
+    umask((mode_t) preferences.directory_umask); /* define new file permissions */
+    abort = xsane_back_gtk_get_filename(windowname, outputfilename, sizeof(outputfilename), outputfilename, TRUE, TRUE, FALSE);
+    umask(XSANE_DEFAULT_UMASK); /* define new file permissions */ 
+
+    if (abort)
+    {
+      gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+     return;
+    }
+  }
+
+  if (preferences.overwrite_warning)  /* test if filename already used */
+  {
+   FILE *testfile;
+
+    testfile = fopen(outputfilename, "rb"); /* read binary (b for win32) */
+    if (testfile) /* filename used: skip */
+    {
+     char buf[256];
+ 
+      fclose(testfile);
+      snprintf(buf, sizeof(buf), WARN_FILE_EXISTS, outputfilename);
+      if (xsane_back_gtk_decision(ERR_HEADER_WARNING, (gchar **) warning_xpm, buf, BUTTON_OVERWRITE, BUTTON_CANCEL, TRUE /* wait */) == FALSE)
+      {
+        gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+       return;
+      }
+    }
+  } 
+
+  inputfilename = strdup(v->filename);
+
+  output_format = xsane_identify_output_format(outputfilename, 0);
+
+  if (v->reduce_to_lineart) /* reduce grayscale image to lineart before saving */
+  {
+   char dummyfilename[1024];
+
+    if (output_format != XSANE_PNM)
+    {
+      xsane_back_gtk_make_path(sizeof(dummyfilename), dummyfilename, 0, 0, "xsane-viewer-", xsane.dev_name, ".ppm", XSANE_PATH_TMP);
+    }
+    else /* pbm: no further conversion, we save to destination filename */
+    {
+      snprintf(dummyfilename, sizeof(dummyfilename), "%s", outputfilename);
+      if (xsane_create_secure_file(dummyfilename)) /* remove possibly existing symbolic links for security */
+      {
+       char buf[256];
+
+        snprintf(buf, sizeof(buf), "%s %s %s\n", ERR_DURING_SAVE, ERR_CREATE_SECURE_FILE, dummyfilename);
+        xsane_back_gtk_error(buf, TRUE);
+       return; /* error */
+      }
+    }
+
+    gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), PROGRESS_PACKING_DATA);
+    gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+    /* the outputfile always is a temporary file, so we do not have to care about symlinks here */
+    xsane_save_image_as_lineart(v->filename, dummyfilename, v->progress_bar, &v->cancel_save);
+
+    free(inputfilename);
+    inputfilename = strdup(dummyfilename);
+  }
+
+
+  if ((!v->reduce_to_lineart) || (output_format != XSANE_PNM)) /* pbm already is saved above, otherwise save now */
+  {
+    gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), PROGRESS_SAVING_DATA);
+    gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+    xsane_save_image_as(inputfilename, outputfilename, output_format, v->progress_bar, &v->cancel_save);
+
+    gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), "");
+    gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+  }
+
+  free(inputfilename);
+
+  v->image_saved = TRUE;
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_ocr_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+ char outputfilename[1024];
+ char *extensionptr;
+ char windowname[256];
+ char *arg[1000];
+ int argnr;
+ pid_t pid;
+ int abort = 0;
+ int i;
+
+  DBG(DBG_proc, "xsane_viewer_ocr_callback\n");
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  strncpy(outputfilename, preferences.filename, sizeof(outputfilename)-5);
+
+  extensionptr = strchr(outputfilename, '.');
+  if (!extensionptr)
+  {
+    extensionptr=outputfilename + strlen(outputfilename);
+  }
+  strcpy(extensionptr, ".txt");
+ 
+  snprintf(windowname, sizeof(windowname), "%s %s %s", xsane.prog_name, WINDOW_OCR_OUTPUT_FILENAME, xsane.device_text);
+ 
+  umask((mode_t) preferences.directory_umask); /* define new file permissions */
+  abort = xsane_back_gtk_get_filename(windowname, outputfilename, sizeof(outputfilename), outputfilename, TRUE, TRUE, FALSE);
+  umask(XSANE_DEFAULT_UMASK); /* define new file permissions */ 
+
+  if (abort)
+  {
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+   return;
+  }
+
+  argnr = xsane_parse_options(preferences.ocr_command, arg);
+
+  arg[argnr++] = strdup(preferences.ocr_inputfile_option);
+  arg[argnr++] = strdup(v->filename);
+
+  arg[argnr++] = strdup(preferences.ocr_outputfile_option);
+  arg[argnr++] = strdup(outputfilename);
+
+  arg[argnr] = 0;
+
+  pid = fork(); 
+
+  if (pid == 0) /* new process */
+  {
+    DBG(DBG_info, "trying to change user id fo new subprocess:\n");
+    DBG(DBG_info, "old effective uid = %d\n", geteuid());
+    setuid(getuid());
+    DBG(DBG_info, "new effective uid = %d\n", geteuid());
+
+    execvp(arg[0], arg); /* does not return if successfully */
+    DBG(DBG_error, "%s %s\n", ERR_FAILED_EXEC_OCR_CMD, preferences.ocr_command);
+    _exit(0); /* do not use exit() here! otherwise gtk gets in trouble */
+  }
+
+  for (i=0; i<argnr; i++)
+  {
+    free(arg[i]);
+  }
+
+  while (pid)
+  {
+   int status = 0;
+   pid_t pid_status = waitpid(pid, &status, WNOHANG);
+ 
+    if (pid == pid_status)
+    {
+      pid = 0; /* ok, child process has terminated */
+    }
+ 
+    while (gtk_events_pending())
+    {
+      gtk_main_iteration();
+    }
+  } 
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_clone_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+ FILE *outfile;
+ FILE *infile;
+ char outfilename[256];
+ Image_info image_info;
+
+  DBG(DBG_proc, "xsane_viewer_clone_callback\n");
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  infile = fopen(v->filename, "rb");
+  if (!infile)
+  {
+    DBG(DBG_error, "could not load file %s\n", v->filename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  xsane_read_pnm_header(infile, &image_info);
+
+  DBG(DBG_info, "cloning image %s with geometry: %d x %d x %d, %d colors\n", v->filename, image_info.image_width, image_info.image_height, image_info.depth, image_info.colors);
+
+  xsane_back_gtk_make_path(sizeof(outfilename), outfilename, 0, 0, "xsane-viewer-", xsane.dev_name, ".ppm", XSANE_PATH_TMP);
+
+  outfile = fopen(outfilename, "wb");
+  if (!outfile)
+  {
+    DBG(DBG_error, "could not save file %s\n", outfilename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), PROGRESS_CLONING_DATA);
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  xsane_save_rotate_image(outfile, infile, &image_info, 0, v->progress_bar, &v->cancel_save);
+
+  fclose(infile);
+  fclose(outfile);
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), "");
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+  xsane_viewer_new(outfilename, v->reduce_to_lineart, NULL);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_spinbutton_float_changed(GtkWidget *spinbutton, gpointer data)
+{
+ float *val = (float *) data;
+
+  *val = gtk_spin_button_get_value_as_float((GtkSpinButton *) spinbutton);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_spinbutton_int_changed(GtkWidget *spinbutton, gpointer data)
+{
+ int *val = (int *) data;
+
+  *val = gtk_spin_button_get_value_as_int((GtkSpinButton *) spinbutton);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_scale_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+ GtkWidget *selection_dialog;
+ GtkWidget *hbox, *vbox;
+ GtkWidget *label, *spinbutton, *button;
+ GtkAdjustment *adjustment;
+ char buf[256];
+
+  DBG(DBG_proc, "xsane_viewer_scale_callback\n");
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  if (v->output_filename)
+  {
+    snprintf(buf, sizeof(buf), "%s: %s", WINDOW_SCALE, v->output_filename); 
+  }
+  else
+  {
+    snprintf(buf, sizeof(buf), WINDOW_SCALE); 
+  }
+
+  selection_dialog = gtk_window_new(GTK_WINDOW_DIALOG);
+  gtk_window_set_position(GTK_WINDOW(selection_dialog), GTK_WIN_POS_MOUSE);
+  gtk_window_set_title(GTK_WINDOW(selection_dialog), buf);
+  xsane_set_window_icon(selection_dialog, 0);
+
+  v->active_dialog = selection_dialog;
+
+  vbox = gtk_vbox_new(FALSE, 5);
+  gtk_container_add(GTK_CONTAINER(selection_dialog), vbox);
+  gtk_widget_show(vbox);
+
+#if 0
+  /* bind scale */
+
+  button = gtk_check_button_new_with_label(BUTTON_SCALE_BIND);
+  gtk_box_pack_start(GTK_BOX(vbox), button, FALSE, FALSE, 5);
+  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(button), TRUE);
+  gtk_widget_show(button);
+#endif
+
+  /* x_scale factor: <-> */
+
+  v->x_scale_factor = 1.0;
+
+  hbox = gtk_hbox_new(FALSE, 2);
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 5);
+  gtk_widget_show(hbox);
+
+  label = gtk_label_new(TEXT_X_SCALE_FACTOR); 
+  gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 10);
+  gtk_widget_show(label);
+
+  adjustment = (GtkAdjustment *) gtk_adjustment_new(1.0, 0.01, 2.0, 0.01, 0.1, 0.0);
+  spinbutton = gtk_spin_button_new(adjustment, 0, 2);
+  gtk_signal_connect(GTK_OBJECT(spinbutton), "changed", (GtkSignalFunc) xsane_viewer_spinbutton_float_changed, (void *) &v->x_scale_factor);
+  gtk_spin_button_set_wrap(GTK_SPIN_BUTTON(spinbutton), TRUE);
+  gtk_spin_button_set_shadow_type(GTK_SPIN_BUTTON(spinbutton), GTK_SHADOW_OUT);
+  gtk_box_pack_end(GTK_BOX(hbox), spinbutton, FALSE, FALSE, 10);
+  gtk_widget_show(spinbutton);
+
+  /* y_scale factor: <-> */
+
+  v->y_scale_factor = 1.0;
+
+  hbox = gtk_hbox_new(FALSE, 2);
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 5);
+  gtk_widget_show(hbox);
+
+  label = gtk_label_new(TEXT_Y_SCALE_FACTOR); 
+  gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 10);
+  gtk_widget_show(label);
+
+  adjustment = (GtkAdjustment *) gtk_adjustment_new(1.0, 0.01, 2.0, 0.01, 0.1, 0.0);
+  spinbutton = gtk_spin_button_new(adjustment, 0, 2);
+  gtk_signal_connect(GTK_OBJECT(spinbutton), "changed", (GtkSignalFunc) xsane_viewer_spinbutton_float_changed, (void *) &v->y_scale_factor);
+  gtk_spin_button_set_wrap(GTK_SPIN_BUTTON(spinbutton), TRUE);
+  gtk_spin_button_set_shadow_type(GTK_SPIN_BUTTON(spinbutton), GTK_SHADOW_OUT);
+  gtk_box_pack_end(GTK_BOX(hbox), spinbutton, FALSE, FALSE, 10);
+  gtk_widget_show(spinbutton);
+
+  /* Apply Cancel */
+
+  hbox = gtk_hbox_new(FALSE, 0);
+  gtk_container_set_border_width(GTK_CONTAINER(hbox), 4); 
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 2);
+  gtk_widget_show(hbox);
+
+  button = gtk_button_new_with_label(BUTTON_APPLY);
+  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
+  gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_viewer_scale_image, (void *) v);
+  gtk_signal_connect_object(GTK_OBJECT(button), "clicked", (GtkSignalFunc) gtk_widget_destroy, (GtkObject *) selection_dialog);
+  gtk_container_add(GTK_CONTAINER(hbox), button);
+  gtk_widget_grab_default(button);
+  gtk_widget_show(button);
+
+  button = gtk_button_new_with_label(BUTTON_CANCEL);
+  gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_viewer_dialog_cancel, (void *) v);
+  gtk_signal_connect_object(GTK_OBJECT(button), "clicked", (GtkSignalFunc) gtk_widget_destroy, (GtkObject *) selection_dialog);
+  gtk_container_add(GTK_CONTAINER(hbox), button);
+  gtk_widget_show(button);
+
+  gtk_widget_show(selection_dialog);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_despeckle_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+ GtkWidget *selection_dialog;
+ GtkWidget *hbox, *vbox;
+ GtkWidget *label, *spinbutton, *button;
+ GtkAdjustment *adjustment;
+ char buf[256];
+
+  DBG(DBG_proc, "xsane_viewer_despeckle_callback\n");
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  if (v->output_filename)
+  {
+    snprintf(buf, sizeof(buf), "%s: %s", WINDOW_DESPECKLE, v->output_filename); 
+  }
+  else
+  {
+    snprintf(buf, sizeof(buf), WINDOW_DESPECKLE); 
+  }
+
+  selection_dialog = gtk_window_new(GTK_WINDOW_DIALOG);
+  gtk_window_set_position(GTK_WINDOW(selection_dialog), GTK_WIN_POS_MOUSE);
+  gtk_window_set_title(GTK_WINDOW(selection_dialog), buf);
+  xsane_set_window_icon(selection_dialog, 0);
+
+  v->active_dialog = selection_dialog;
+
+  vbox = gtk_vbox_new(FALSE, 5);
+  gtk_container_add(GTK_CONTAINER(selection_dialog), vbox);
+  gtk_widget_show(vbox);
+
+  /* Despeckle radius: <-> */
+
+  v->filter_radius = 2;
+
+  hbox = gtk_hbox_new(FALSE, 2);
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 5);
+  gtk_widget_show(hbox);
+
+  label = gtk_label_new(TEXT_DESPECKLE_RADIUS); 
+  gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 10);
+  gtk_widget_show(label);
+
+  adjustment = (GtkAdjustment *) gtk_adjustment_new(2.0, 2.0, 10.0, 1.0, 5.0, 0.0);
+  spinbutton = gtk_spin_button_new(adjustment, 0, 0);
+  gtk_signal_connect(GTK_OBJECT(spinbutton), "changed", (GtkSignalFunc) xsane_viewer_spinbutton_int_changed, (void *) &v->filter_radius);
+  gtk_spin_button_set_wrap(GTK_SPIN_BUTTON(spinbutton), TRUE);
+  gtk_spin_button_set_shadow_type(GTK_SPIN_BUTTON(spinbutton), GTK_SHADOW_OUT);
+  gtk_box_pack_end(GTK_BOX(hbox), spinbutton, FALSE, FALSE, 10);
+  gtk_widget_show(spinbutton);
+
+  /* Apply Cancel */
+
+  hbox = gtk_hbox_new(FALSE, 0);
+  gtk_container_set_border_width(GTK_CONTAINER(hbox), 4); 
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 2);
+  gtk_widget_show(hbox);
+
+  button = gtk_button_new_with_label(BUTTON_APPLY);
+  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
+  gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_viewer_despeckle_image, (void *) v);
+  gtk_signal_connect_object(GTK_OBJECT(button), "clicked", (GtkSignalFunc) gtk_widget_destroy, (GtkObject *) selection_dialog);
+  gtk_container_add(GTK_CONTAINER(hbox), button);
+  gtk_widget_grab_default(button);
+  gtk_widget_show(button);
+
+  button = gtk_button_new_with_label(BUTTON_CANCEL);
+  gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_viewer_dialog_cancel, (void *) v);
+  gtk_signal_connect_object(GTK_OBJECT(button), "clicked", (GtkSignalFunc) gtk_widget_destroy, (GtkObject *) selection_dialog);
+  gtk_container_add(GTK_CONTAINER(hbox), button);
+  gtk_widget_show(button);
+
+  gtk_widget_show(selection_dialog);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_blur_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+ GtkWidget *selection_dialog;
+ GtkWidget *hbox, *vbox;
+ GtkWidget *label, *spinbutton, *button;
+ GtkAdjustment *adjustment;
+ char buf[256];
+
+  DBG(DBG_proc, "xsane_viewer_blur_callback\n");
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  if (v->output_filename)
+  {
+    snprintf(buf, sizeof(buf), "%s: %s", WINDOW_BLUR, v->output_filename); 
+  }
+  else
+  {
+    snprintf(buf, sizeof(buf), WINDOW_BLUR); 
+  }
+
+  selection_dialog = gtk_window_new(GTK_WINDOW_DIALOG);
+  gtk_window_set_position(GTK_WINDOW(selection_dialog), GTK_WIN_POS_MOUSE);
+  gtk_window_set_title(GTK_WINDOW(selection_dialog), buf);
+  xsane_set_window_icon(selection_dialog, 0);
+
+  v->active_dialog = selection_dialog;
+
+  vbox = gtk_vbox_new(FALSE, 5);
+  gtk_container_set_border_width(GTK_CONTAINER(vbox), 4); 
+  gtk_container_add(GTK_CONTAINER(selection_dialog), vbox);
+  gtk_widget_show(vbox);
+
+  /* Blur radius: <-> */
+
+  v->filter_radius = 2;
+
+  hbox = gtk_hbox_new(FALSE, 2);
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 5);
+  gtk_widget_show(hbox);
+
+  label = gtk_label_new(TEXT_BLUR_RADIUS); 
+  gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 10);
+  gtk_widget_show(label);
+
+  adjustment = (GtkAdjustment *) gtk_adjustment_new(2.0, 2.0, 20.0, 1.0, 5.0, 0.0);
+  spinbutton = gtk_spin_button_new(adjustment, 0, 0);
+  gtk_signal_connect(GTK_OBJECT(spinbutton), "changed", (GtkSignalFunc) xsane_viewer_spinbutton_int_changed, (void *) &v->filter_radius);
+  gtk_spin_button_set_wrap(GTK_SPIN_BUTTON(spinbutton), TRUE);
+  gtk_spin_button_set_shadow_type(GTK_SPIN_BUTTON(spinbutton), GTK_SHADOW_OUT);
+  gtk_box_pack_end(GTK_BOX(hbox), spinbutton, FALSE, FALSE, 10);
+  gtk_widget_show(spinbutton);
+
+  /* Apply Cancel */
+
+  hbox = gtk_hbox_new(FALSE, 0);
+  gtk_container_set_border_width(GTK_CONTAINER(hbox), 4); 
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 2);
+  gtk_widget_show(hbox);
+
+  button = gtk_button_new_with_label(BUTTON_APPLY);
+  GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
+  gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_viewer_blur_image, (void *) v);
+  gtk_container_add(GTK_CONTAINER(hbox), button);
+  gtk_widget_grab_default(button);
+  gtk_widget_show(button);
+
+  button = gtk_button_new_with_label(BUTTON_CANCEL);
+  gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_viewer_dialog_cancel, (void *) v);
+  gtk_signal_connect_object(GTK_OBJECT(button), "clicked", (GtkSignalFunc) gtk_widget_destroy, (GtkObject *) selection_dialog);
+  gtk_container_add(GTK_CONTAINER(hbox), button);
+  gtk_widget_show(button);
+
+  gtk_widget_show(selection_dialog);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_scale_image(GtkWidget *window, gpointer data)
+{
+ FILE *outfile;
+ FILE *infile;
+ char outfilename[256];
+ Viewer *v = (Viewer *) data;
+ Image_info image_info;
+
+  DBG(DBG_proc, "xsane_viewer_scale_image\n");
+
+  gtk_widget_destroy(v->active_dialog);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  infile = fopen(v->filename, "rb");
+  if (!infile)
+  {
+    DBG(DBG_error, "could not load file %s\n", v->filename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  xsane_read_pnm_header(infile, &image_info);
+
+  DBG(DBG_info, "scaling image %s with geometry: %d x %d x %d, %d colors\n", v->filename, image_info.image_width, image_info.image_height, image_info.depth, image_info.colors);
+
+  xsane_back_gtk_make_path(sizeof(outfilename), outfilename, 0, 0, "xsane-viewer-", xsane.dev_name, ".ppm", XSANE_PATH_TMP);
+
+  outfile = fopen(outfilename, "wb");
+  if (!outfile)
+  {
+    DBG(DBG_error, "could not save file %s\n", outfilename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), PROGRESS_SCALING_DATA);
+
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  xsane_save_scaled_image(outfile, infile, &image_info, v->x_scale_factor, v->y_scale_factor, v->progress_bar, &v->cancel_save);
+
+  fclose(infile);
+  fclose(outfile);
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), "");
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  DBG(DBG_info, "removing file %s\n", v->filename);
+  remove(v->filename);
+  free(v->filename);
+
+  v->filename = strdup(outfilename);
+  v->image_saved = FALSE;
+
+  xsane_viewer_read_image(v);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_despeckle_image(GtkWidget *window, gpointer data)
+{
+ FILE *outfile;
+ FILE *infile;
+ char outfilename[256];
+ Viewer *v = (Viewer *) data;
+ Image_info image_info;
+
+  DBG(DBG_proc, "xsane_viewer_despeckle_image\n");
+
+  gtk_widget_destroy(v->active_dialog);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  infile = fopen(v->filename, "rb");
+  if (!infile)
+  {
+    DBG(DBG_error, "could not load file %s\n", v->filename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  xsane_read_pnm_header(infile, &image_info);
+
+  DBG(DBG_info, "despeckling image %s with geometry: %d x %d x %d, %d colors\n", v->filename, image_info.image_width, image_info.image_height, image_info.depth, image_info.colors);
+
+  xsane_back_gtk_make_path(sizeof(outfilename), outfilename, 0, 0, "xsane-viewer-", xsane.dev_name, ".ppm", XSANE_PATH_TMP);
+
+  outfile = fopen(outfilename, "wb");
+  if (!outfile)
+  {
+    DBG(DBG_error, "could not save file %s\n", outfilename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), PROGRESS_DESPECKLING_DATA);
+
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  xsane_save_despeckle_image(outfile, infile, &image_info, v->filter_radius, v->progress_bar, &v->cancel_save);
+
+  fclose(infile);
+  fclose(outfile);
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), "");
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  DBG(DBG_info, "removing file %s\n", v->filename);
+  remove(v->filename);
+  free(v->filename);
+
+  v->filename = strdup(outfilename);
+  v->image_saved = FALSE;
+
+  xsane_viewer_read_image(v);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_blur_image(GtkWidget *window, gpointer data)
+{
+ FILE *outfile;
+ FILE *infile;
+ char outfilename[256];
+ Viewer *v = (Viewer *) data;
+ Image_info image_info;
+
+  DBG(DBG_proc, "xsane_viewer_blur_image\n");
+
+  gtk_widget_destroy(v->active_dialog);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  infile = fopen(v->filename, "rb");
+  if (!infile)
+  {
+    DBG(DBG_error, "could not load file %s\n", v->filename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  xsane_read_pnm_header(infile, &image_info);
+
+  DBG(DBG_info, "bluring image %s with geometry: %d x %d x %d, %d colors\n", v->filename, image_info.image_width, image_info.image_height, image_info.depth, image_info.colors);
+
+  xsane_back_gtk_make_path(sizeof(outfilename), outfilename, 0, 0, "xsane-viewer-", xsane.dev_name, ".ppm", XSANE_PATH_TMP);
+
+  outfile = fopen(outfilename, "wb");
+  if (!outfile)
+  {
+    DBG(DBG_error, "could not save file %s\n", outfilename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), PROGRESS_BLURING_DATA);
+
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  xsane_save_blur_image(outfile, infile, &image_info, v->filter_radius, v->progress_bar, &v->cancel_save);
+
+  fclose(infile);
+  fclose(outfile);
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), "");
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  DBG(DBG_info, "removing file %s\n", v->filename);
+  remove(v->filename);
+  free(v->filename);
+
+  v->filename = strdup(outfilename);
+  v->image_saved = FALSE;
+
+  xsane_viewer_read_image(v);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_rotate(Viewer *v, int rotation)
+{
+ FILE *outfile;
+ FILE *infile;
+ char outfilename[256];
+ Image_info image_info;
+
+  DBG(DBG_proc, "xsane_viewer_rotate(%d)\n", rotation);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), FALSE);
+
+  infile = fopen(v->filename, "rb");
+  if (!infile)
+  {
+    DBG(DBG_error, "could not load file %s\n", v->filename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  xsane_read_pnm_header(infile, &image_info);
+
+  DBG(DBG_info, "rotating image %s with geometry: %d x %d x %d, %d colors\n", v->filename, image_info.image_width, image_info.image_height, image_info.depth, image_info.colors);
+
+  xsane_back_gtk_make_path(sizeof(outfilename), outfilename, 0, 0, "xsane-viewer-", xsane.dev_name, ".ppm", XSANE_PATH_TMP);
+
+  outfile = fopen(outfilename, "wb");
+  if (!outfile)
+  {
+    DBG(DBG_error, "could not save file %s\n", outfilename);
+    gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+
+   return;
+  }
+
+  if (rotation <4)
+  {
+    gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), PROGRESS_ROTATING_DATA);
+  }
+  else
+  {
+    gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), PROGRESS_MIRRORING_DATA);
+  }
+
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  xsane_save_rotate_image(outfile, infile, &image_info, rotation, v->progress_bar, &v->cancel_save);
+
+  fclose(infile);
+  fclose(outfile);
+
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), "");
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(v->progress_bar), 0.0);
+
+  DBG(DBG_info, "removing file %s\n", v->filename);
+  remove(v->filename);
+  free(v->filename);
+
+  v->filename = strdup(outfilename);
+  v->image_saved = FALSE;
+
+  xsane_viewer_read_image(v);
+
+  gtk_widget_set_sensitive(GTK_WIDGET(v->button_box), TRUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_rotate90_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+
+  DBG(DBG_proc, "xsane_viewer_rotate90_callback\n");
+  xsane_viewer_rotate(v, 1);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_rotate180_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+
+  DBG(DBG_proc, "xsane_viewer_rotate180_callback\n");
+  xsane_viewer_rotate(v, 2);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_rotate270_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+
+  DBG(DBG_proc, "xsane_viewer_rotate270_callback\n");
+  xsane_viewer_rotate(v, 3);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_mirror_x_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+
+  DBG(DBG_proc, "xsane_viewer_mirror_x_callback\n");
+  xsane_viewer_rotate(v, 4);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_mirror_y_callback(GtkWidget *window, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+
+  DBG(DBG_proc, "xsane_viewer_mirror_y_callback\n");
+  xsane_viewer_rotate(v, 6);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_viewer_zoom_callback(GtkWidget *widget, gpointer data)
+{
+ Viewer *v = (Viewer *) data;
+ int val;
+
+  DBG(DBG_proc, "xsane_viewer_zoom_callback\n");
+
+  val = (int) gtk_object_get_data(GTK_OBJECT(widget), "Selection");
+  v->zoom = (float) val / 100;
+  DBG(DBG_info, "setting zoom factor to %f\n", v->zoom);
+  xsane_viewer_read_image(v);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static GtkWidget *xsane_viewer_files_build_menu(Viewer *v)
+{
+ GtkWidget *menu, *item;
+ 
+  DBG(DBG_proc, "xsane_viewer_files_build_menu\n");
+ 
+  menu = gtk_menu_new();
+  gtk_accel_group_attach(xsane.accelerator_group, GTK_OBJECT(menu));
+ 
+  /* XSane save dialog */
+ 
+  item = gtk_menu_item_new_with_label(MENU_ITEM_SAVE_IMAGE);
+#if 0
+  gtk_widget_add_accelerator(item, "activate", xsane.accelerator_group, GDK_I, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED);
+#endif
+  gtk_menu_append(GTK_MENU(menu), item);
+  gtk_signal_connect(GTK_OBJECT(item), "activate", (GtkSignalFunc) xsane_viewer_save_callback, v);
+  gtk_widget_show(item);
+
+ 
+  /* Clone */
+ 
+  item = gtk_menu_item_new_with_label(MENU_ITEM_CLONE);
+#if 0
+  gtk_widget_add_accelerator(item, "activate", xsane.accelerator_group, GDK_I, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED);
+#endif
+  gtk_menu_append(GTK_MENU(menu), item);
+  gtk_signal_connect(GTK_OBJECT(item), "activate", (GtkSignalFunc) xsane_viewer_clone_callback, v);
+  gtk_widget_show(item);
+
+
+  /* Scale */
+ 
+  item = gtk_menu_item_new_with_label(MENU_ITEM_SCALE);
+#if 0
+  gtk_widget_add_accelerator(item, "activate", xsane.accelerator_group, GDK_I, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED);
+#endif
+  gtk_menu_append(GTK_MENU(menu), item);
+  gtk_signal_connect(GTK_OBJECT(item), "activate", (GtkSignalFunc) xsane_viewer_scale_callback, v);
+  gtk_widget_show(item);
+
+ 
+  /* Close */
+ 
+  item = gtk_menu_item_new_with_label(MENU_ITEM_CLOSE);
+#if 0
+  gtk_widget_add_accelerator(item, "activate", xsane.accelerator_group, GDK_Q, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED);
+#endif
+  gtk_container_add(GTK_CONTAINER(menu), item);
+  gtk_object_set_data(GTK_OBJECT(item), "Viewer", (void *) v);
+  gtk_signal_connect(GTK_OBJECT(item), "activate", (GtkSignalFunc) xsane_viewer_close_callback, v);
+  gtk_widget_show(item);
+ 
+  return menu;    
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static GtkWidget *xsane_viewer_filters_build_menu(Viewer *v)
+{
+ GtkWidget *menu, *item;
+ 
+  DBG(DBG_proc, "xsane_viewer_filters_build_menu\n");
+ 
+  menu = gtk_menu_new();
+  gtk_accel_group_attach(xsane.accelerator_group, GTK_OBJECT(menu));
+ 
+  /* Despeckle */
+ 
+  item = gtk_menu_item_new_with_label(MENU_ITEM_DESPECKLE);
+#if 0
+  gtk_widget_add_accelerator(item, "activate", xsane.accelerator_group, GDK_I, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED);
+#endif
+  gtk_menu_append(GTK_MENU(menu), item);
+  gtk_signal_connect(GTK_OBJECT(item), "activate", (GtkSignalFunc) xsane_viewer_despeckle_callback, v);
+  gtk_widget_show(item);
+ 
+ 
+  /* Blur */
+ 
+  item = gtk_menu_item_new_with_label(MENU_ITEM_BLUR);
+#if 0
+  gtk_widget_add_accelerator(item, "activate", xsane.accelerator_group, GDK_Q, GDK_CONTROL_MASK, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED);
+#endif
+  gtk_container_add(GTK_CONTAINER(menu), item);
+  gtk_signal_connect(GTK_OBJECT(item), "activate", (GtkSignalFunc) xsane_viewer_blur_callback, v);
+  gtk_widget_show(item);
+ 
+  return menu;    
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static int xsane_viewer_read_image(Viewer *v)
+{
+ unsigned char *row, *src_row;
+ int x, y;
+ int last_y;
+ int nread;
+ int pos0;
+ FILE *infile;
+ Image_info image_info;
+ char buf[256];
+ float size;
+ char *size_unit;
+ int width, height;
+
+  infile = fopen(v->filename, "rb");
+  if (!infile)
+  {
+    DBG(DBG_error, "could not load file %s\n", v->filename);
+   return -1;
+  }
+
+  xsane_read_pnm_header(infile, &image_info);
+
+  pos0 = ftell(infile);
+
+  if (!image_info.colors) /* == 0 (grayscale) ? */
+  {
+    image_info.colors = 1; /* we have one color component */
+  }
+
+  DBG(DBG_info, "reading image %s with  geometry: %d x %d x %d, %d colors\n", v->filename,
+                 image_info.image_width, image_info.image_height, image_info.depth, image_info.colors);
+  /* open infile */
+
+  if (v->window) /* we already have an existing viewer preview window? */
+  {
+    gtk_widget_destroy(v->window);
+  }
+
+  /* the preview area */
+  if (image_info.colors == 3) /* RGB */
+  {
+    v->window = gtk_preview_new(GTK_PREVIEW_COLOR);
+  }
+  else /* grayscale */
+  {
+    v->window = gtk_preview_new(GTK_PREVIEW_GRAYSCALE);
+  }
+
+  gtk_preview_size(GTK_PREVIEW(v->window), image_info.image_width * v->zoom, image_info.image_height * v->zoom);
+  gtk_container_add(GTK_CONTAINER(v->viewport), v->window);
+  gtk_widget_show(v->window);
+
+
+
+  /* get memory for one row of the image */
+  src_row = malloc(image_info.image_width * image_info.colors * image_info.depth / 8);
+  row = malloc(((int) image_info.image_width * v->zoom) * image_info.colors);
+
+  if (!row || !src_row)
+  {
+    if (src_row)
+    {
+      free(src_row);
+    }
+
+    if (row)
+    {
+      free(row);
+    }
+
+    fclose(infile);
+    DBG(DBG_error, "could not allocate memory\n");
+   return -1;
+  }
+
+
+  last_y = -99999;
+
+  /* read the image from file */
+  for (y = 0; y < (int) (image_info.image_height * v->zoom); y++)
+  {
+    if ((int) (last_y / v->zoom) != (int) (y / v->zoom))
+    {
+      last_y = y;
+
+      if (image_info.depth == 8) /* 8 bits/pixel */
+      {
+        fseek(infile, pos0 + (((int) (y / v->zoom)) * image_info.image_width) * image_info.colors, SEEK_SET);
+        nread = fread(src_row, image_info.colors, image_info.image_width, infile);
+
+        if (image_info.colors > 1)
+        {
+          for (x=0; x < (int) (image_info.image_width * v->zoom); x++)
+          {
+           int xoff = ((int) (x / v->zoom)) * image_info.colors;
+
+            row[3*x+0] = src_row[xoff + 0];
+            row[3*x+1] = src_row[xoff + 1];
+            row[3*x+2] = src_row[xoff + 2];
+          }
+        }
+        else
+        {
+          for (x=0; x < (int) (image_info.image_width * v->zoom); x++)
+          {
+            row[x] = src_row[((int) (x / v->zoom))];
+          }
+        }
+      }
+      else /* 16 bits/pixel => reduce to 8 bits/pixel */
+      {
+       guint16 *src_row16 = (guint16 *) src_row;
+
+        fseek(infile, pos0 + (((int) (y / v->zoom)) * image_info.image_width) * image_info.colors * 2, SEEK_SET);
+        nread = fread(src_row, 2 * image_info.colors, image_info.image_width, infile);
+
+        if (image_info.colors > 1)
+        {
+          for (x=0; x < (int) (image_info.image_width * v->zoom); x++)
+          {
+           int xoff = ((int) (x / v->zoom)) * image_info.colors;
+
+            row[3*x+0] = (unsigned char) (src_row16[xoff + 0] / 256);
+            row[3*x+1] = (unsigned char) (src_row16[xoff + 1] / 256);
+            row[3*x+2] = (unsigned char) (src_row16[xoff + 2] / 256);
+          }
+        }
+        else
+        {
+          for (x=0; x < (int) (image_info.image_width * v->zoom); x++)
+          {
+            row[x] = (unsigned char) (src_row16[(int) (x / v->zoom)] / 256);
+          }
+        }
+      }
+    }
+
+    gtk_preview_draw_row(GTK_PREVIEW(v->window), row, 0, y, image_info.image_width * v->zoom);
+  }
+
+  gtk_preview_put(GTK_PREVIEW(v->window), v->window->window, v->window->style->black_gc, 0, 0, 0, 0, 
+                  image_info.image_width * v->zoom, image_info.image_height * v->zoom);
+
+  size = (float) image_info.image_width * image_info.image_height * image_info.colors;
+  if (image_info.depth == 16)
+  {
+    size *= 2.0;
+  }
+
+  size_unit = "B";
+
+  if (size >= 1024 * 1024)
+  {
+    size /= (1024.0 * 1024.0);
+    size_unit = "MB";
+  }
+  else if (size >= 1024)
+  {
+    size /= 1024.0;
+    size_unit = "KB";
+  }
+
+  if (v->reduce_to_lineart)
+  {
+    snprintf(buf, sizeof(buf), TEXT_VIEWER_IMAGE_INFO, image_info.image_width, image_info.image_height, 1, image_info.colors, 
+             image_info.resolution_x, image_info.resolution_y, size, size_unit);
+  }
+  else
+  {
+    snprintf(buf, sizeof(buf), TEXT_VIEWER_IMAGE_INFO, image_info.image_width, image_info.image_height, image_info.depth, image_info.colors,
+             image_info.resolution_x, image_info.resolution_y, size, size_unit);
+  }
+  gtk_label_set(GTK_LABEL(v->image_info_label), buf);
+
+  width = image_info.image_width + 26;
+  height = image_info.image_height + 136;
+
+  if (width > gdk_screen_width())
+  {
+    width = gdk_screen_width();
+  }
+
+  if (height > gdk_screen_height())
+  {
+    height = gdk_screen_height();
+  }
+
+  gtk_window_set_default_size(GTK_WINDOW(v->top), width, height);
+
+  free(row);
+  free(src_row);
+  fclose(infile);
+
+ return 0;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+Viewer *xsane_viewer_new(char *filename, int reduce_to_lineart, char *output_filename)
+{
+ char buf[256];
+ Viewer *v;
+ GtkWidget *vbox, *hbox;
+ GtkWidget *menubar, *menubar_item;
+ GtkWidget *scrolled_window;
+ GtkWidget *zoom_option_menu, *zoom_menu, *zoom_menu_item;
+ int i, selection;
+
+  DBG(DBG_proc, "viewer_new(%s)\n", filename);
+
+  /* create viewer structure v */
+  v = malloc(sizeof(*v));
+  if (!v)
+  {
+    DBG(DBG_error, "could not allocate memory\n");
+    return 0;
+  }
+  memset(v, 0, sizeof(*v));   
+
+  v->filename = strdup(filename);
+  v->reduce_to_lineart = reduce_to_lineart;
+  v->zoom = 1.0;
+  v->image_saved = FALSE;
+  v->next_viewer = xsane.viewer_list;
+  xsane.viewer_list = v;
+
+  if (output_filename)
+  {
+    v->output_filename = strdup(output_filename);
+    snprintf(buf, sizeof(buf), "%s %s - %s", WINDOW_VIEWER, v->output_filename, xsane.device_text);
+  }
+  else
+  {
+    snprintf(buf, sizeof(buf), "%s %s", WINDOW_VIEWER, xsane.device_text);
+  }
+
+  v->top = gtk_window_new(GTK_WINDOW_TOPLEVEL);
+  gtk_window_set_title(GTK_WINDOW(v->top), buf);
+  xsane_set_window_icon(v->top, 0);
+  gtk_accel_group_attach(xsane.accelerator_group, GTK_OBJECT(v->top));   
+  gtk_object_set_data(GTK_OBJECT(v->top), "Viewer", (void *) v);
+  gtk_signal_connect(GTK_OBJECT(v->top), "delete_event", GTK_SIGNAL_FUNC(xsane_viewer_close_callback), NULL);
+
+  /* set the main vbox */
+  vbox = gtk_vbox_new(FALSE, 0);
+  gtk_container_set_border_width(GTK_CONTAINER(vbox), 0);
+  gtk_container_add(GTK_CONTAINER(v->top), vbox);
+  gtk_widget_show(vbox);
+
+
+  /* create the menubar */
+  menubar = gtk_menu_bar_new();
+  gtk_box_pack_start(GTK_BOX(vbox), menubar, FALSE, FALSE, 0);
+
+  /* "Files" submenu: */
+  menubar_item = gtk_menu_item_new_with_label(MENU_FILE);
+  gtk_container_add(GTK_CONTAINER(menubar), menubar_item);
+  gtk_menu_item_set_submenu(GTK_MENU_ITEM(menubar_item), xsane_viewer_files_build_menu(v));
+/*  gtk_widget_add_accelerator(menubar_item, "select", xsane.accelerator_group, GDK_F, 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); */
+  gtk_widget_show(menubar_item); 
+
+  /* "Filters" submenu: */
+  menubar_item = gtk_menu_item_new_with_label(MENU_FILTERS);
+  gtk_container_add(GTK_CONTAINER(menubar), menubar_item);
+  gtk_menu_item_set_submenu(GTK_MENU_ITEM(menubar_item), xsane_viewer_filters_build_menu(v));
+/*  gtk_widget_add_accelerator(menubar_item, "select", xsane.accelerator_group, GDK_F, 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); */
+  gtk_widget_show(menubar_item); 
+
+  gtk_widget_show(menubar);
+
+ 
+  /* set the main hbox */
+  hbox = gtk_hbox_new(FALSE, 0);
+  gtk_box_pack_end(GTK_BOX(vbox), hbox, FALSE, FALSE, 5);
+  gtk_container_set_border_width(GTK_CONTAINER(hbox), 5);
+  gtk_widget_show(hbox);
+ 
+ 
+  /* top hbox for icons */
+  v->button_box = gtk_hbox_new(FALSE, 1);
+  gtk_container_set_border_width(GTK_CONTAINER(v->button_box), 1);
+  gtk_box_pack_start(GTK_BOX(vbox), v->button_box, FALSE, FALSE, 0);
+  gtk_widget_show(v->button_box);
+
+  v->save      = xsane_button_new_with_pixmap(v->top->window, v->button_box, file_xpm,      DESC_VIEWER_SAVE,      (GtkSignalFunc) xsane_viewer_save_callback, v);
+  v->ocr       = xsane_button_new_with_pixmap(v->top->window, v->button_box, ocr_xpm,       DESC_VIEWER_OCR,       (GtkSignalFunc) xsane_viewer_ocr_callback, v);
+  v->clone     = xsane_button_new_with_pixmap(v->top->window, v->button_box, clone_xpm,     DESC_VIEWER_CLONE,     (GtkSignalFunc) xsane_viewer_clone_callback, v);
+  v->scale     = xsane_button_new_with_pixmap(v->top->window, v->button_box, scale_xpm,     DESC_VIEWER_SCALE,     (GtkSignalFunc) xsane_viewer_scale_callback, v);
+  v->despeckle = xsane_button_new_with_pixmap(v->top->window, v->button_box, despeckle_xpm, DESC_VIEWER_DESPECKLE, (GtkSignalFunc) xsane_viewer_despeckle_callback, v);
+  v->blur      = xsane_button_new_with_pixmap(v->top->window, v->button_box, blur_xpm,      DESC_VIEWER_BLUR,      (GtkSignalFunc) xsane_viewer_blur_callback, v);
+  v->rotate90  = xsane_button_new_with_pixmap(v->top->window, v->button_box, rotate90_xpm,  DESC_VIEWER_ROTATE90,  (GtkSignalFunc) xsane_viewer_rotate90_callback, v);
+  v->rotate180 = xsane_button_new_with_pixmap(v->top->window, v->button_box, rotate180_xpm, DESC_VIEWER_ROTATE180, (GtkSignalFunc) xsane_viewer_rotate180_callback, v);
+  v->rotate270 = xsane_button_new_with_pixmap(v->top->window, v->button_box, rotate270_xpm, DESC_VIEWER_ROTATE270, (GtkSignalFunc) xsane_viewer_rotate270_callback, v);
+  v->mirror_x  = xsane_button_new_with_pixmap(v->top->window, v->button_box, mirror_x_xpm,  DESC_VIEWER_MIRROR_X,  (GtkSignalFunc) xsane_viewer_mirror_x_callback, v);
+  v->mirror_y  = xsane_button_new_with_pixmap(v->top->window, v->button_box, mirror_y_xpm,  DESC_VIEWER_MIRROR_Y,  (GtkSignalFunc) xsane_viewer_mirror_y_callback, v);
+
+
+  /* "Zoom" submenu: */
+  zoom_option_menu = gtk_option_menu_new();
+  xsane_back_gtk_set_tooltip(xsane.tooltips, zoom_option_menu, DESC_VIEWER_ZOOM); 
+  gtk_box_pack_start(GTK_BOX(v->button_box), zoom_option_menu, FALSE, FALSE, 0);
+  gtk_widget_show(zoom_option_menu); 
+
+  zoom_menu = gtk_menu_new();
+  selection = 0;
+  for (i = 0; i < XSANE_VIEWER_ZOOM_ITEMS; i++)
+  {
+    snprintf(buf, sizeof(buf), "%d %%", xsane_viewer_zoom[i]);
+    zoom_menu_item = gtk_menu_item_new_with_label(buf);
+    gtk_menu_append(GTK_MENU(zoom_menu), zoom_menu_item);
+    gtk_signal_connect(GTK_OBJECT(zoom_menu_item), "activate", (GtkSignalFunc) xsane_viewer_zoom_callback, v);
+    gtk_object_set_data(GTK_OBJECT(zoom_menu_item), "Selection", (void *) xsane_viewer_zoom[i]);
+    gtk_widget_show(zoom_menu_item);
+    if (v->zoom*100 == xsane_viewer_zoom[i])
+    {
+      selection = i;
+    }
+  }
+  gtk_option_menu_set_menu(GTK_OPTION_MENU(zoom_option_menu), zoom_menu); 
+  gtk_option_menu_set_history(GTK_OPTION_MENU(zoom_option_menu), selection);
+/*  gtk_widget_add_accelerator(menubar_item, "select", xsane.accelerator_group, GDK_F, 0, GTK_ACCEL_VISIBLE | GTK_ACCEL_LOCKED); */
+  gtk_widget_show(zoom_menu); 
+
+
+
+  scrolled_window = gtk_scrolled_window_new(NULL, NULL);
+  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
+  gtk_box_pack_start(GTK_BOX(vbox), scrolled_window, TRUE, TRUE, 0);
+  gtk_widget_show(scrolled_window);
+
+
+  /* the viewport */
+  v->viewport = gtk_frame_new(/* label */ 0);
+  gtk_frame_set_shadow_type(GTK_FRAME(v->viewport), GTK_SHADOW_IN);
+  gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(scrolled_window), v->viewport); 
+  gtk_widget_show(v->viewport);
+
+
+  /* image info label */
+  hbox = gtk_hbox_new(FALSE, 1);
+  gtk_container_set_border_width(GTK_CONTAINER(hbox), 1);
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
+  gtk_widget_show(hbox);
+  v->image_info_label = gtk_label_new("");
+  gtk_box_pack_start(GTK_BOX(hbox), v->image_info_label, FALSE, FALSE, 2);
+  gtk_widget_show(v->image_info_label);
+
+  gtk_widget_show(v->top);
+
+  if (xsane_viewer_read_image(v)) /* read image and add preview to the viewport */
+  {
+    /* error */ 
+  }
+
+  v->progress_bar = (GtkProgressBar *) gtk_progress_bar_new();
+#if 0
+  gtk_widget_set_usize(v->progress_bar, 0, 25);
+#endif
+  gtk_box_pack_start(GTK_BOX(vbox), (GtkWidget *) v->progress_bar, FALSE, FALSE, 0);
+  gtk_progress_set_show_text(GTK_PROGRESS(v->progress_bar), TRUE);
+  gtk_progress_set_format_string(GTK_PROGRESS(v->progress_bar), "");
+  gtk_widget_show(GTK_WIDGET(v->progress_bar));
+
+ return v;
+}
+
+