Imported Debian patch 0.84-2debian/0.84-2

1 files changed, 1664 insertions, 0 deletions

diff --git a/src/xsane-front-gtk.c b/src/xsane-front-gtk.c
new file mode 100644
index 0000000..b4373ed
--- /dev/null
+++ b/src/xsane-front-gtk.c
@@ -0,0 +1,1664 @@
+/* xsane -- a graphical (X11, gtk) scanner-oriented SANE frontend
+
+   xsane-front-gtk.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 "xsane-back-gtk.h"
+#include "xsane-preferences.h"
+#include "xsane-preview.h"
+#include "xsane-save.h"
+#include "xsane-gamma.h"
+#include "xsane-setup.h"
+#include <md5.h>
+
+#ifdef HAVE_LIBPNG
+#ifdef HAVE_LIBZ
+#include <png.h>
+#include <zlib.h>
+#endif
+#endif
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+/* forward declarations: */
+
+int xsane_parse_options(char *options, char *argv[]);
+void xsane_get_bounds(const SANE_Option_Descriptor *opt, double *minp, double *maxp);
+double xsane_find_best_resolution(int well_known_option, double dpi);
+int xsane_set_resolution(int well_known_option, double resolution);
+void xsane_set_all_resolutions(void);
+void xsane_define_maximum_output_size();
+void xsane_close_dialog_callback(GtkWidget *widget, gpointer data);
+void xsane_authorization_button_callback(GtkWidget *widget, gpointer data);
+gint xsane_authorization_callback(SANE_String_Const resource,
+                                  SANE_Char username[SANE_MAX_USERNAME_LEN],
+                                  SANE_Char password[SANE_MAX_PASSWORD_LEN]);
+void xsane_progress_cancel(GtkWidget *widget, gpointer data);
+void xsane_progress_new(char *bar_text, char *info, GtkSignalFunc callback, int *cancel_data_pointer);
+void xsane_progress_update(gfloat newval);
+void xsane_progress_clear();
+GtkWidget *xsane_vendor_pixmap_new(GdkWindow *window, GtkWidget *parent);
+GtkWidget *xsane_toggle_button_new_with_pixmap(GdkWindow *window, GtkWidget *parent, const char *xpm_d[], const char *desc,
+                                         int *state, void *xsane_toggle_button_callback);
+GtkWidget *xsane_button_new_with_pixmap(GdkWindow *window, GtkWidget *parent, const char *xpm_d[], const char *desc,
+                                        void *xsane_button_callback, gpointer data);
+void xsane_option_menu_new(GtkWidget *parent, char *str_list[], const char *val, int option_number, const char *desc,
+                           void *option_menu_callback, SANE_Int settable, const gchar *widget_name);
+void xsane_option_menu_new_with_pixmap(GdkWindow *window, GtkBox *parent, const char *xpm_d[], const char *desc,
+                                       char *str_list[], const char *val,
+                                       GtkObject **data, int option,
+                                       void *option_menu_callback, SANE_Int settable, const gchar *widget_name);
+void xsane_scale_new(GtkBox *parent, char *labeltext, const char *desc,
+                     float min, float max, float quant, float step, float page_step,
+                     int digits, double *val, GtkObject **data, void *xsane_scale_callback, SANE_Int settable);
+void xsane_scale_new_with_pixmap(GdkWindow *window, GtkBox *parent, const char *xpm_d[], const char *desc,
+                                 float min, float max, float quant, float step, float page_step, int digits,
+                                 double *val, GtkObject **data, int option, void *xsane_scale_callback, SANE_Int settable);
+void xsane_separator_new(GtkWidget *xsane_parent, int dist);
+GtkWidget *xsane_info_table_text_new(GtkWidget *table, gchar *text, int row, int colomn);
+GtkWidget *xsane_info_text_new(GtkWidget *parent, gchar *text);
+void xsane_refresh_dialog(void);
+void xsane_set_sensitivity(SANE_Int sensitivity);
+void xsane_update_param(void *arg);
+void xsane_define_output_filename(void);
+int xsane_identify_output_format(char *filename, char **ext);
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+int xsane_parse_options(char *options, char *argv[])
+{
+ int optpos = 0;
+ int bufpos = 0;
+ int arg    = 0;
+ char buf[256];
+ 
+  DBG(DBG_proc, "xsane_parse_options\n");
+ 
+  while (options[optpos] != 0)
+  {
+    switch(options[optpos])
+    {
+      case ' ':
+        buf[bufpos] = 0;
+        argv[arg++] = strdup(buf);
+        bufpos = 0;
+        optpos++;
+       break;
+ 
+      case '\"':
+        optpos++; /* skip " */
+        while ((options[optpos] != 0) && (options[optpos] != '\"'))
+        {
+          buf[bufpos++] = options[optpos++];
+        }
+        optpos++; /* skip " */
+       break;
+ 
+      default:
+        buf[bufpos++] = options[optpos++];
+       break;
+    }
+  }
+  buf[bufpos] = 0;
+  argv[arg++] = strdup(buf);
+
+ return arg;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_get_bounds(const SANE_Option_Descriptor *opt, double *minp, double *maxp)
+{
+ double min, max;
+ int i;
+
+  DBG(DBG_proc, "xsane_get_bounds\n");
+
+  min = -INF;
+  max =  INF;
+  switch (opt->constraint_type)
+  {
+    case SANE_CONSTRAINT_RANGE:
+      min = opt->constraint.range->min;
+      max = opt->constraint.range->max;
+      break;
+
+    case SANE_CONSTRAINT_WORD_LIST:
+      min =  INF;
+      max = -INF;
+
+      for (i = 1; i <= opt->constraint.word_list[0]; ++i)
+      {
+        if (opt->constraint.word_list[i] < min)
+        {
+          min = opt->constraint.word_list[i];
+        }
+        if (opt->constraint.word_list[i] > max)
+        {
+          max = opt->constraint.word_list[i];
+        }
+      }
+     break;
+
+    default:
+     break;
+  }
+
+  if (opt->type == SANE_TYPE_FIXED)
+  {
+    if (min > -INF && min < INF)
+    {
+      min = SANE_UNFIX (min);
+    }
+    if (max > -INF && max < INF)
+    {
+      max = SANE_UNFIX (max);
+    }
+  }
+  *minp = min;
+  *maxp = max;
+}                                                        
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+double xsane_find_best_resolution(int well_known_option, double dpi)
+{
+ const SANE_Option_Descriptor *opt;
+ double bestdpi;
+
+  DBG(DBG_proc, "xsane_find_best_resolution\n");
+
+  opt = xsane_get_option_descriptor(xsane.dev, well_known_option);
+
+  if (!opt)
+  {
+    return -1.0; /* option does not exits */
+  }
+
+  if (opt->constraint_type == SANE_CONSTRAINT_RANGE)
+  {
+   double quant=0;
+   double min=0;
+   double max=0;
+
+    switch (opt->type)
+    {
+      case SANE_TYPE_INT:
+        min   = opt->constraint.range->min;
+        max   = opt->constraint.range->max;
+        quant = opt->constraint.range->quant;
+      break;
+
+      case SANE_TYPE_FIXED:
+        min   = SANE_UNFIX(opt->constraint.range->min);
+        max   = SANE_UNFIX(opt->constraint.range->max);
+        quant = SANE_UNFIX(opt->constraint.range->quant);
+      break;
+
+      default:
+        DBG(DBG_error, "find_best_resolution: %s %d\n", ERR_UNKNOWN_TYPE, opt->type);
+    }
+
+    bestdpi = dpi;
+
+    if (quant != 0) /* make sure selected value fits into quantisation */
+    {
+     int factor;
+     double diff;
+
+      factor = (int) (dpi - min) / quant;
+
+      diff = dpi - min - factor * quant;
+      bestdpi = min + factor * quant;
+
+      if (diff >quant/2.0)
+      {
+        bestdpi += quant;
+      }
+    }
+
+    if (bestdpi < min)
+    {
+      bestdpi = min;
+    }
+
+    if (bestdpi > max)
+    {
+      bestdpi = max;
+    }
+  }
+  else if (opt->constraint_type == SANE_CONSTRAINT_WORD_LIST)
+  {
+   SANE_Word diff;
+   SANE_Word val;
+   int items;
+   int i;
+
+    items = opt->constraint.word_list[0];
+
+    bestdpi = opt->constraint.word_list[1];
+    if (opt->type == SANE_TYPE_FIXED)
+    {
+      bestdpi = SANE_UNFIX(bestdpi);
+    }
+
+    diff = abs(bestdpi - dpi);
+
+    for (i=1; i<=items; i++)
+    {
+      val = opt->constraint.word_list[i];
+      if (opt->type == SANE_TYPE_FIXED)
+      {
+        val = SANE_UNFIX(val);
+      }
+
+      if (abs(val - dpi) < diff)
+      {
+        diff = abs(val - dpi);
+        bestdpi = val;
+      }
+    }
+  }
+  else
+  {
+    DBG(DBG_error, "find_best_resolution: %s %d\n", ERR_UNKNOWN_CONSTRAINT_TYPE, opt->constraint_type);
+    return -1; /* error */
+  }
+
+  return bestdpi;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+int xsane_set_resolution(int well_known_option, double resolution)
+{
+ const SANE_Option_Descriptor *opt;
+ double bestdpi;
+ SANE_Word dpi;
+
+  DBG(DBG_proc, "xsane_set_resolution\n");
+
+  opt = xsane_get_option_descriptor(xsane.dev, well_known_option);
+
+  if (!opt)
+  {
+    return -1; /* option does not exits */
+  }
+
+  if (!SANE_OPTION_IS_ACTIVE(opt->cap))
+  {
+    return -1; /* option is not active */
+  }
+
+  bestdpi = xsane_find_best_resolution(well_known_option, resolution);
+
+  if (bestdpi < 0)
+  {
+     DBG(DBG_error, "set_resolution: %s\n", ERR_FAILED_SET_RESOLUTION);
+    return -1;
+  }
+
+  switch (opt->type)
+  {
+    case SANE_TYPE_INT:
+      dpi = bestdpi;
+    break;
+
+    case SANE_TYPE_FIXED:
+      dpi = SANE_FIX(bestdpi);
+    break;
+
+    default:
+     DBG(DBG_error, "set_resolution: %s %d\n", ERR_UNKNOWN_TYPE, opt->type);
+    return 1; /* error */
+  }
+
+  xsane_control_option(xsane.dev, well_known_option, SANE_ACTION_SET_VALUE, &dpi, 0);
+  return 0; /* everything is ok */
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_set_all_resolutions(void)
+{
+ int printer_resolution;
+
+  DBG(DBG_proc, "xsane_set_all_resolutions\n");
+
+#if 0
+  xsane_set_resolution(xsane.well_known.dpi_y, xsane.resolution_y); /* set y resolution if possible */
+  if (xsane_set_resolution(xsane.well_known.dpi_x, xsane.resolution_x)) /* set x resolution if possible */
+  {
+    xsane_set_resolution(xsane.well_known.dpi, xsane.resolution); /* set common resolution if necessary */
+    xsane.resolution_x = xsane.resolution;
+    xsane.resolution_y = xsane.resolution;
+  }
+#else
+  if (xsane_set_resolution(xsane.well_known.dpi_y, xsane.resolution_y)) /* set y resolution if possible */
+  {
+    xsane_set_resolution(xsane.well_known.dpi, xsane.resolution); /* set common resolution if necessary */
+    xsane.resolution_x = xsane.resolution;
+    xsane.resolution_y = xsane.resolution;
+  }
+  else
+  {
+    xsane_set_resolution(xsane.well_known.dpi_x, xsane.resolution_x); /* set x resolution if possible */
+  }
+#endif
+
+  switch (xsane.param.format)
+  {
+    case SANE_FRAME_GRAY:
+      if (xsane.param.depth == 1)
+      {
+        printer_resolution = preferences.printer[preferences.printernr]->lineart_resolution;
+      }
+      else
+      {
+        printer_resolution = preferences.printer[preferences.printernr]->grayscale_resolution;
+      }
+    break;
+
+    case SANE_FRAME_RGB:
+    case SANE_FRAME_RED:
+    case SANE_FRAME_GREEN:
+    case SANE_FRAME_BLUE:
+    default:
+      printer_resolution = preferences.printer[preferences.printernr]->color_resolution;
+    break;
+  }
+
+  xsane.zoom   = xsane.resolution   / printer_resolution;
+  xsane.zoom_x = xsane.resolution_x / printer_resolution;
+  xsane.zoom_y = xsane.resolution_y / printer_resolution; 
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_define_maximum_output_size()
+{
+ const SANE_Option_Descriptor *opt;
+
+  DBG(DBG_proc, "xsane_define_maximum_output_size\n");
+
+  opt = xsane_get_option_descriptor(xsane.dev, xsane.well_known.coord[0]);
+
+  if ( (opt) && (opt->unit== SANE_UNIT_MM) )
+  {
+    switch(xsane.xsane_mode)
+    {
+      case XSANE_SAVE:
+
+        xsane_define_output_filename();
+        xsane.xsane_output_format = xsane_identify_output_format(xsane.output_filename, 0);
+
+        preview_set_maximum_output_size(xsane.preview, INF, INF);
+       break;
+
+      case XSANE_VIEWER:
+        preview_set_maximum_output_size(xsane.preview, INF, INF);
+       break;
+
+      case XSANE_COPY:
+        if (preferences.psrotate) /* rotate: landscape */
+        {
+          preview_set_maximum_output_size(xsane.preview,
+                                          preferences.printer[preferences.printernr]->height / xsane.zoom_y,
+                                          preferences.printer[preferences.printernr]->width  / xsane.zoom_x);
+        }
+        else /* do not rotate: portrait */
+        {
+          preview_set_maximum_output_size(xsane.preview,
+                                          preferences.printer[preferences.printernr]->width  / xsane.zoom_x,
+                                          preferences.printer[preferences.printernr]->height / xsane.zoom_y);
+        }
+       break;
+
+      case XSANE_FAX:
+        preview_set_maximum_output_size(xsane.preview, preferences.fax_width, preferences.fax_height);
+       break;
+
+      case XSANE_MAIL:
+        preview_set_maximum_output_size(xsane.preview, INF, INF);
+       break;
+
+      default:
+        preview_set_maximum_output_size(xsane.preview, INF, INF);
+    }
+  }
+  else
+  {
+    preview_set_maximum_output_size(xsane.preview, INF, INF);
+  }
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_close_dialog_callback(GtkWidget *widget, gpointer data)
+{
+ GtkWidget *dialog_widget = data;
+
+  DBG(DBG_proc, "xsane_close_dialog_callback\n");
+
+  gtk_widget_destroy(dialog_widget);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+int authorization_flag;
+
+void xsane_authorization_button_callback(GtkWidget *widget, gpointer data)
+{
+  DBG(DBG_proc, "xsane_authorization_button_callback\n");
+
+  authorization_flag = (long) data;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+gint xsane_authorization_callback(SANE_String_Const resource,
+                                  SANE_Char username[SANE_MAX_USERNAME_LEN],
+                                  SANE_Char password[SANE_MAX_PASSWORD_LEN])
+{
+ GtkWidget *authorize_dialog, *vbox, *hbox, *button, *label;
+ GtkWidget *username_widget, *password_widget;
+ char buf[SANE_MAX_PASSWORD_LEN+SANE_MAX_USERNAME_LEN+128];
+ char *input;
+ char *resource_string;
+ int len;
+ int resource_len;
+ int secure_password_transmission = 0;
+ char password_filename[PATH_MAX];
+ struct stat password_stat;
+ FILE *password_file;
+ unsigned char md5digest[16];
+ int query_user = 1;
+
+  DBG(DBG_proc, "xsane_authorization_callback\n");
+
+  if (strstr(resource, "$MD5$") != NULL) /* secure password authorisation */
+  {
+    DBG(DBG_info, "xsane_authorization_callback: secure (MD5) password transmission requested\n");
+    secure_password_transmission = 1;
+    resource_len = strstr(resource, "$MD5$") - resource;
+  }
+  else
+  {
+    DBG(DBG_info, "xsane_authorization_callback: insecure password transmission requested\n");
+    resource_len = strlen(resource);
+  }
+  resource_string = alloca(resource_len+1);
+  snprintf(resource_string, resource_len+1, "%s", resource);
+
+  xsane_back_gtk_make_path(sizeof(password_filename), password_filename, NULL, NULL, "pass", NULL, NULL, XSANE_PATH_LOCAL_SANE);
+
+  /* if password transmission is secure and file ~/.sane/pass exists and it's permissions are x00 then
+     try to read username and pasword for resource from that file */
+  if ((stat(password_filename, &password_stat) == 0) && (secure_password_transmission))
+  {
+    if ((password_stat.st_mode & 63) != 0) /* 63 = 0x077 */
+    {
+      snprintf(buf, sizeof(buf), ERR_PASSWORD_FILE_INSECURE, password_filename);
+      xsane_back_gtk_error(buf, TRUE);
+    }
+    else /* ok, password file has secure permissions, we can use it */
+    {
+      password_file = fopen(password_filename, "r");
+
+      if (password_file)
+      {
+        DBG(DBG_info, "xsane authorization: opened %s as password file\n", password_filename);
+        /* file format: "username:password:resource" */
+        while (fgets(buf, sizeof(buf), password_file))
+        {
+         char *stored_username;
+         char *stored_password;
+         char *stored_resource;
+         char *marker;
+
+          marker = strrchr(buf, '\n');
+          if (marker)
+          {
+            *marker = 0; /* remove \n at end of read line */
+          }
+
+          marker = strrchr(buf, '\r');
+          if (marker)
+          {
+            *marker = 0; /* remove \r at end of read line (eg for windows file) */
+          }
+
+          marker = strchr(buf, ':');
+          if (marker)
+          {
+            stored_username = buf;
+            *marker = 0; /* set \0 to end of stored_username */
+            stored_password = marker + 1;
+
+            marker = strchr(stored_password, ':');
+            if (marker)
+            {
+              *marker = 0; /* set \0 to end of stored_password */
+              stored_resource = marker + 1;
+
+              if (strcmp(stored_resource, resource_string) == 0) /* password file resource equals requested resource */
+              {
+                strcpy(username, stored_username);
+                strcpy(password, stored_password);
+                query_user = 0;
+              }
+            }
+          }
+        }
+
+        fclose(password_file);
+      }
+      else
+      {
+        DBG(DBG_info, "xsane authorization: could not open existing password file %s\n", password_filename);
+      }
+    }
+  }
+  else
+  {
+    DBG(DBG_info, "xsane authorization: password file %s does not exist\n", password_filename);
+  }
+
+  if (query_user)
+  {
+    authorize_dialog = gtk_window_new(GTK_WINDOW_DIALOG);
+    gtk_window_set_position(GTK_WINDOW(authorize_dialog), GTK_WIN_POS_CENTER);
+    gtk_window_set_policy(GTK_WINDOW(authorize_dialog), FALSE, FALSE, FALSE);
+    gtk_signal_connect(GTK_OBJECT(authorize_dialog), "delete_event",
+                       GTK_SIGNAL_FUNC(xsane_authorization_button_callback), (void *) -1); /* -1 = cancel */
+    snprintf(buf, sizeof(buf), "%s %s", xsane.prog_name, WINDOW_AUTHORIZE);
+    gtk_window_set_title(GTK_WINDOW(authorize_dialog), buf);
+    xsane_set_window_icon(authorize_dialog, 0);
+
+    vbox = gtk_vbox_new(/* not homogeneous */ FALSE, 10); /* y-space between all box items */
+    gtk_container_add(GTK_CONTAINER(authorize_dialog), vbox);
+    gtk_widget_show(vbox);
+
+    /* print resourece string */
+    snprintf(buf, sizeof(buf), "\n\n%s %s", TEXT_AUTHORIZATION_REQ, resource_string);
+    label = gtk_label_new(buf);
+    gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0); /* y-space around authorization text */
+    gtk_widget_show(label);
+
+    /* print securety of password transmission */
+    if (secure_password_transmission)
+    {
+      snprintf(buf, sizeof(buf), "%s\n", TEXT_AUTHORIZATION_SECURE);
+    }
+    else
+    {
+      snprintf(buf, sizeof(buf), "%s\n", TEXT_AUTHORIZATION_INSECURE);
+    }
+    label = gtk_label_new(buf);
+    gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0); /* y-space around authorization text */
+    gtk_widget_show(label);
+
+    /* ask for username */
+    hbox = gtk_hbox_new(FALSE, 10); /* x-space between label and input filed */
+    gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0); /* y-space around inner items */
+
+    label = gtk_label_new(TEXT_USERNAME);
+    gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 10); /* x-space around label */
+    gtk_widget_show(label);
+
+    username_widget = gtk_entry_new_with_max_length(SANE_MAX_USERNAME_LEN-1);
+    gtk_widget_set_usize(username_widget, 250, 0);
+    gtk_entry_set_text(GTK_ENTRY(username_widget), "");
+    gtk_box_pack_end(GTK_BOX(hbox), username_widget, FALSE, FALSE, 10); /* x-space around input filed */
+    gtk_widget_show(username_widget);
+    gtk_widget_show(hbox);
+
+
+    /* ask for password */
+    hbox = gtk_hbox_new(FALSE, 10); /* x-space between label and input filed */
+    gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0); /* y-space around inner items */
+
+    label = gtk_label_new(TEXT_PASSWORD);
+    gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 10); /* x-space around label */
+    gtk_widget_show(label);
+
+    password_widget = gtk_entry_new_with_max_length(SANE_MAX_PASSWORD_LEN-1);
+    gtk_entry_set_visibility(GTK_ENTRY(password_widget), FALSE); /* make entered text invisible */
+    gtk_widget_set_usize(password_widget, 250, 0);
+    gtk_entry_set_text(GTK_ENTRY(password_widget), "");
+    gtk_box_pack_end(GTK_BOX(hbox), password_widget, FALSE, FALSE, 10); /* x-space around input filed */
+    gtk_widget_show(password_widget);
+    gtk_widget_show(hbox);
+
+    /* buttons */
+    hbox = gtk_hbox_new(TRUE, 10); /* x-space between buttons */
+    gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 10);  /* y-space around buttons */
+
+    button = gtk_button_new_with_label(BUTTON_OK);
+    GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
+    gtk_signal_connect(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(xsane_authorization_button_callback), (void *) 1);
+    gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, TRUE, 10); /* x-space around OK-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", GTK_SIGNAL_FUNC(xsane_authorization_button_callback), (void *) -1);
+    gtk_box_pack_start(GTK_BOX(hbox), button, TRUE, TRUE, 10); /* x-space around cancel-button */
+    gtk_widget_show(button);
+
+    gtk_widget_show(hbox);
+
+    gtk_widget_show(authorize_dialog);
+
+
+    username[0]=0;
+    password[0]=0;
+
+    authorization_flag = 0;
+
+    /* wait for ok or cancel */
+    while (authorization_flag == 0)
+    {
+      gtk_main_iteration();
+    }
+
+    if (authorization_flag == 1) /* 1=ok, -1=cancel */
+    {
+      input = gtk_entry_get_text(GTK_ENTRY(username_widget));
+      len = strlen(input);
+      memcpy(username, input, len);
+      username[len] = 0;
+
+      input = gtk_entry_get_text(GTK_ENTRY(password_widget));
+      len = strlen(input);
+      memcpy(password, input, len);
+      password[len] = 0;
+    }
+    gtk_widget_destroy(authorize_dialog);
+  }
+
+  if (secure_password_transmission)
+  {
+    DBG(DBG_info, "xsane authorization: calculating md5digest of password\n");
+
+    snprintf(buf, sizeof(buf), "%s%s", (strstr(resource, "$MD5$")) + 5, password); /* random string from backend + password */
+    md5_buffer(buf, strlen(buf), md5digest); /* calculate md5digest */
+#if 0 /* makes problems with WIN32 */
+    memset(password, 0, SANE_MAX_PASSWORD_LEN); /* clear password */
+#endif
+
+    sprintf(password, "$MD5$%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+            md5digest[0],  md5digest[1],  md5digest[2],  md5digest[3],
+            md5digest[4],  md5digest[5],  md5digest[6],  md5digest[7],
+            md5digest[8],  md5digest[9],  md5digest[10], md5digest[11],
+            md5digest[12], md5digest[13], md5digest[14], md5digest[15]);
+  }         
+
+  return TRUE;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_progress_cancel(GtkWidget *widget, gpointer data)
+{
+ void *cancel_data_pointer;
+ GtkFunction callback = (GtkFunction) data;
+
+  DBG(DBG_proc, "xsane_progress_cancel\n");
+
+  cancel_data_pointer = gtk_object_get_data(GTK_OBJECT(widget), "progress-cancel-data-pointer");
+
+  (callback)(cancel_data_pointer);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_progress_new(char *bar_text, char *info, GtkSignalFunc callback, int *cancel_data_pointer)
+{
+  DBG(DBG_proc, "xsane_progress_new\n");
+
+  gtk_label_set(GTK_LABEL(xsane.info_label), info);
+  gtk_progress_set_format_string(GTK_PROGRESS(xsane.progress_bar), bar_text); 
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(xsane.progress_bar), 0.0);
+  gtk_widget_set_sensitive(GTK_WIDGET(xsane.cancel_button), TRUE);
+  gtk_object_set_data(GTK_OBJECT(xsane.cancel_button), "progress-cancel-data-pointer", cancel_data_pointer);
+  gtk_signal_connect(GTK_OBJECT(xsane.cancel_button), "clicked", (GtkSignalFunc) xsane_progress_cancel, callback);
+  xsane.cancel_callback = callback;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_progress_clear()
+{
+  DBG(DBG_proc, "xsane_progress_clear\n");
+
+  /* do not call xsane_update_param() here because it overrites the good scanning parameters with bad guessed ones */
+  gtk_progress_set_format_string(GTK_PROGRESS(xsane.progress_bar), ""); 
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(xsane.progress_bar), 0.0);
+  gtk_widget_set_sensitive(GTK_WIDGET(xsane.cancel_button), FALSE);
+
+  if (xsane.cancel_callback)
+  {
+    gtk_signal_disconnect_by_func(GTK_OBJECT(xsane.cancel_button), (GtkSignalFunc) xsane_progress_cancel, xsane.cancel_callback);
+    xsane.cancel_callback = 0;
+  }
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_progress_update(gfloat newval)
+{
+  DBG(DBG_proc, "xsane_progress_update\n");
+
+  if (newval < 0.0)
+  {
+    newval = 0.0;
+  }
+
+  if (newval > 1.0)
+  {
+    newval = 1.0;
+  }
+
+  gtk_progress_bar_update(GTK_PROGRESS_BAR(xsane.progress_bar), newval);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+/* add the scanner vendorīs logo if available */
+/* when the logo is not available use the xsane logo */
+GtkWidget *xsane_vendor_pixmap_new(GdkWindow *window, GtkWidget *parent)
+{
+ char filename[PATH_MAX];
+ GtkWidget *hbox, *vbox;
+ GtkWidget *pixmapwidget = NULL;
+ GdkBitmap *mask;
+ GdkPixmap *pixmap = NULL;
+
+  if (xsane.devlist[xsane.selected_dev]->vendor)
+  {
+    xsane_back_gtk_make_path(sizeof(filename), filename, "xsane", NULL, NULL, xsane.devlist[xsane.selected_dev]->vendor, "-logo.xpm", XSANE_PATH_SYSTEM);
+    pixmap = gdk_pixmap_create_from_xpm(window, &mask, xsane.bg_trans, filename);
+  }
+
+  if (!pixmap) /* vendor logo not available, use backend logo */
+  {
+    xsane_back_gtk_make_path(sizeof(filename), filename, "xsane", NULL, NULL, xsane.backend, "-logo.xpm", XSANE_PATH_SYSTEM);
+    pixmap = gdk_pixmap_create_from_xpm(window, &mask, xsane.bg_trans, filename);
+  }
+
+  if (!pixmap) /* backend logo not available, use xsane logo */
+  {
+    xsane_back_gtk_make_path(sizeof(filename), filename, "xsane", NULL, NULL, "sane-xsane", "-logo.xpm", XSANE_PATH_SYSTEM);
+    pixmap = gdk_pixmap_create_from_xpm(window, &mask, xsane.bg_trans, filename);
+  }
+
+  if (pixmap) /* ok, we have a pixmap, so letīs show it */
+  {
+    vbox = gtk_vbox_new(FALSE, 0);
+    gtk_box_pack_end(GTK_BOX(parent), vbox, FALSE, FALSE, 0);
+    gtk_widget_show(vbox);   
+
+    hbox = gtk_hbox_new(TRUE /* homogeneous */ , 2);
+    gtk_container_add(GTK_CONTAINER(vbox), hbox);
+    gtk_container_set_border_width(GTK_CONTAINER(hbox), 0);
+    gtk_widget_show(hbox);
+
+    pixmapwidget = gtk_pixmap_new(pixmap, mask); /* now add the pixmap */
+    gtk_box_pack_start(GTK_BOX(hbox), pixmapwidget, FALSE /* expand */, FALSE /* fill */, 2);
+    gdk_pixmap_unref(pixmap);
+    gtk_widget_show(pixmapwidget);
+  }
+
+ return pixmapwidget;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+GtkWidget *xsane_toggle_button_new_with_pixmap(GdkWindow *window, GtkWidget *parent, const char *xpm_d[], const char *desc,
+                                         int *state, void *xsane_toggle_button_callback)
+{
+ GtkWidget *button;
+ GtkWidget *pixmapwidget;
+ GdkBitmap *mask;
+ GdkPixmap *pixmap;
+
+  DBG(DBG_proc, "xsane_toggle_button_new_with_pixmap\n");
+
+  button = gtk_toggle_button_new();
+  xsane_back_gtk_set_tooltip(xsane.tooltips, button, desc);
+
+  pixmap = gdk_pixmap_create_from_xpm_d(window, &mask, xsane.bg_trans, (gchar **) xpm_d);
+  pixmapwidget = gtk_pixmap_new(pixmap, mask);
+  gtk_container_add(GTK_CONTAINER(button), pixmapwidget);
+  gtk_widget_show(pixmapwidget);
+  gdk_pixmap_unref(pixmap);
+
+  gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(button), *state);
+  gtk_signal_connect(GTK_OBJECT(button), "toggled", (GtkSignalFunc) xsane_toggle_button_callback, (GtkObject *) state);
+  gtk_box_pack_start(GTK_BOX(parent), button, FALSE, FALSE, 0);
+  gtk_widget_show(button);
+
+ return button;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+GtkWidget *xsane_button_new_with_pixmap(GdkWindow *window, GtkWidget *parent, const char *xpm_d[], const char *desc,
+                                  void *xsane_button_callback, gpointer data)
+{
+ GtkWidget *button;
+ GtkWidget *pixmapwidget;
+ GdkBitmap *mask;
+ GdkPixmap *pixmap;
+
+  DBG(DBG_proc, "xsane_button_new_with_pixmap\n");
+
+  button = gtk_button_new();
+  xsane_back_gtk_set_tooltip(xsane.tooltips, button, desc);
+
+  pixmap = gdk_pixmap_create_from_xpm_d(window, &mask, xsane.bg_trans, (gchar **) xpm_d);
+  pixmapwidget = gtk_pixmap_new(pixmap, mask);
+  gtk_container_add(GTK_CONTAINER(button), pixmapwidget);
+  gtk_widget_show(pixmapwidget);
+  gdk_pixmap_unref(pixmap);
+
+  if (xsane_button_callback)
+  {
+    gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_button_callback, data);
+  }
+  gtk_box_pack_start(GTK_BOX(parent), button, FALSE, FALSE, 0);
+  gtk_widget_show(button);
+
+  return(button);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static int xsane_option_menu_lookup(GSGMenuItem menu_items[], const char *string)
+{
+ int i;
+
+  DBG(DBG_proc, "xsane_option_menu_lookup\n");
+
+  for (i = 0; strcmp(menu_items[i].label, string) != 0; ++i);
+  return i;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static void xsane_option_menu_callback(GtkWidget *widget, gpointer data)
+{
+ GSGMenuItem *menu_item = data;
+ GSGDialogElement *elem = menu_item->elem;
+ const SANE_Option_Descriptor *opt;
+ int opt_num;
+ double dval;
+ SANE_Word val;
+ void *valp = &val;
+
+  DBG(DBG_proc, "xsane_option_menu_callback\n");
+
+  opt_num = elem - xsane.element;
+  opt = xsane_get_option_descriptor(xsane.dev, opt_num);
+  switch (opt->type)
+  {
+    case SANE_TYPE_INT:
+      sscanf(menu_item->label, "%d", &val);
+      break;
+
+    case SANE_TYPE_FIXED:
+      sscanf(menu_item->label, "%lg", &dval);
+      val = SANE_FIX(dval);
+      break;
+
+    case SANE_TYPE_STRING:
+      valp = menu_item->label;
+      break;
+
+    default:
+      DBG(DBG_error, "xsane_option_menu_callback: %s %d\n", ERR_UNKNOWN_TYPE, opt->type);
+      break;
+  }
+  xsane_back_gtk_set_option(opt_num, valp, SANE_ACTION_SET_VALUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_option_menu_new(GtkWidget *parent, char *str_list[], const char *val, int option_number, const char *desc,
+                           void *option_menu_callback, SANE_Int settable, const gchar *widget_name)
+{
+ GtkWidget *option_menu, *menu, *item;
+ GSGMenuItem *menu_items;
+ GSGDialogElement *elem;
+ int i, num_items;
+
+  DBG(DBG_proc, "xsane_option_menu_new\n");
+
+  elem = xsane.element + option_number;
+
+  for (num_items = 0; str_list[num_items]; ++num_items);
+  menu_items = malloc(num_items * sizeof(menu_items[0]));
+
+  menu = gtk_menu_new();
+  if (widget_name)
+  {
+    gtk_widget_set_name(menu, widget_name);
+  }
+
+  for (i = 0; i < num_items; ++i)
+  {
+    item = gtk_menu_item_new_with_label(_BGT(str_list[i]));
+    gtk_container_add(GTK_CONTAINER(menu), item);
+
+    if (option_menu_callback)
+    {
+      gtk_signal_connect(GTK_OBJECT(item), "activate", (GtkSignalFunc) option_menu_callback, menu_items + i);
+    }
+    else
+    {
+      gtk_signal_connect(GTK_OBJECT(item), "activate", (GtkSignalFunc) xsane_option_menu_callback, menu_items + i);
+    }
+
+    gtk_widget_show(item);
+
+    menu_items[i].label = str_list[i];
+    menu_items[i].elem  = elem;
+    menu_items[i].index = i;
+  }
+
+  option_menu = gtk_option_menu_new();
+  xsane_back_gtk_set_tooltip(xsane.tooltips, option_menu, desc);
+  gtk_box_pack_end(GTK_BOX(parent), option_menu, FALSE, FALSE, 2);
+  gtk_option_menu_set_menu(GTK_OPTION_MENU(option_menu), menu);
+  gtk_option_menu_set_history(GTK_OPTION_MENU(option_menu), xsane_option_menu_lookup(menu_items, val));
+
+  gtk_widget_show(option_menu);
+
+  gtk_widget_set_sensitive(option_menu, settable);
+
+  elem->widget = option_menu;
+  elem->menu_size = num_items;
+  elem->menu = menu_items;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_option_menu_new_with_pixmap(GdkWindow *window, GtkBox *parent, const char *xpm_d[], const char *desc,
+                                       char *str_list[], const char *val,
+                                       GtkObject **data, int option,
+                                       void *option_menu_callback, SANE_Int settable, const gchar *widget_name)
+{
+ GtkWidget *hbox;
+ GtkWidget *pixmapwidget;
+ GdkBitmap *mask;
+ GdkPixmap *pixmap;
+
+  DBG(DBG_proc, "xsane_option_menu_new_with_pixmap\n");
+
+  hbox = gtk_hbox_new(FALSE, 5);
+  gtk_box_pack_start(parent, hbox, FALSE, FALSE, 0);
+
+  pixmap = gdk_pixmap_create_from_xpm_d(window, &mask, xsane.bg_trans, (gchar **) xpm_d);
+  pixmapwidget = gtk_pixmap_new(pixmap, mask);
+  gtk_box_pack_start(GTK_BOX(hbox), pixmapwidget, FALSE, FALSE, 2);
+  gtk_widget_show(pixmapwidget);
+
+  xsane_option_menu_new(hbox, str_list, val, option, desc, option_menu_callback, settable, widget_name);
+  gtk_widget_show(hbox);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_scale_new(GtkBox *parent, char *labeltext, const char *desc,
+                     float min, float max, float quant, float page_step, float page_size,
+                     int digits, double *val, GtkObject **data, void *xsane_scale_callback, SANE_Int settable)
+{
+ GtkWidget *hbox;
+ GtkWidget *label;
+ GtkWidget *scale;
+
+  DBG(DBG_proc, "xsane_scale_new\n");
+
+  hbox = gtk_hbox_new(FALSE, 5);
+  gtk_box_pack_start(parent, hbox, FALSE, FALSE, 0);
+
+  label = gtk_label_new(labeltext);
+  gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 2);
+
+  *data = gtk_adjustment_new(*val, min, max, quant, page_step, page_size);
+  scale = gtk_hscale_new(GTK_ADJUSTMENT(*data));
+  xsane_back_gtk_set_tooltip(xsane.tooltips, scale, desc);
+  gtk_widget_set_usize(scale, 201, 0); /* minimum scale with = 201 pixels */
+  gtk_range_set_update_policy(GTK_RANGE(scale), preferences.gtk_update_policy);
+  /* GTK_UPDATE_CONTINUOUS, GTK_UPDATE_DISCONTINUOUS, GTK_UPDATE_DELAYED */
+  gtk_scale_set_value_pos(GTK_SCALE(scale), GTK_POS_TOP);
+  gtk_scale_set_digits(GTK_SCALE(scale), digits);
+  gtk_box_pack_end(GTK_BOX(hbox), scale, FALSE, TRUE, 5); /* make scale not sizeable */
+
+  if (xsane_scale_callback)
+  {
+    gtk_signal_connect(*data, "value_changed", (GtkSignalFunc) xsane_scale_callback, val);
+  }
+
+  gtk_widget_show(label);
+  gtk_widget_show(scale);
+  gtk_widget_show(hbox);
+
+  gtk_widget_set_sensitive(scale, settable);  
+
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_scale_new_with_pixmap(GdkWindow *window, GtkBox *parent, const char *xpm_d[], const char *desc,
+                                 float min, float max, float quant, float page_step, float page_size,
+                                 int digits, double *val, GtkObject **data, int option, void *xsane_scale_callback, SANE_Int settable)
+{
+ GtkWidget *hbox;
+ GtkWidget *scale;
+ GtkWidget *pixmapwidget;
+ GdkBitmap *mask;
+ GdkPixmap *pixmap;
+
+  DBG(DBG_proc, "xsane_scale_new_with_pixmap\n");
+
+  hbox = gtk_hbox_new(FALSE, 5);
+  gtk_box_pack_start(parent, hbox, FALSE, FALSE, 0);
+
+  pixmap = gdk_pixmap_create_from_xpm_d(window, &mask, xsane.bg_trans, (gchar **) xpm_d);
+  pixmapwidget = gtk_pixmap_new(pixmap, mask);
+  gtk_box_pack_start(GTK_BOX(hbox), pixmapwidget, FALSE, FALSE, 2);
+
+  *data = gtk_adjustment_new(*val, min, max, quant, page_step, page_size);
+  scale = gtk_hscale_new(GTK_ADJUSTMENT(*data));
+  xsane_back_gtk_set_tooltip(xsane.tooltips, scale, desc);
+  gtk_widget_set_usize(scale, 201, 0); /* minimum scale with = 201 pixels */
+  gtk_range_set_update_policy(GTK_RANGE(scale), preferences.gtk_update_policy);
+  /* GTK_UPDATE_CONTINUOUS, GTK_UPDATE_DISCONTINUOUS, GTK_UPDATE_DELAYED */
+  gtk_scale_set_value_pos(GTK_SCALE(scale), GTK_POS_TOP);
+  gtk_scale_set_digits(GTK_SCALE(scale), digits);
+  gtk_box_pack_end(GTK_BOX(hbox), scale, TRUE, TRUE, 5); /* make scale sizeable */
+
+  if (xsane_scale_callback)
+  {
+    gtk_signal_connect(*data, "value_changed", (GtkSignalFunc) xsane_scale_callback, val);
+  }
+
+  gtk_widget_show(pixmapwidget);
+  gtk_widget_show(scale);
+  gtk_widget_show(hbox);
+
+  gtk_widget_set_sensitive(scale, settable);  
+
+  gdk_pixmap_unref(pixmap);
+
+  if (option)
+  {
+   GSGDialogElement *elem;
+
+    elem=xsane.element + option;
+    elem->data   = *data;
+    elem->widget = scale;
+  }
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_separator_new(GtkWidget *xsane_parent, int dist)
+{
+ GtkWidget *xsane_separator;
+
+  DBG(DBG_proc, "xsane_separator_new\n");
+
+  xsane_separator = gtk_hseparator_new();
+  gtk_box_pack_start(GTK_BOX(xsane_parent), xsane_separator, FALSE, FALSE, dist);
+  gtk_widget_show(xsane_separator);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+GtkWidget *xsane_info_table_text_new(GtkWidget *table, gchar *text, int row, int colomn)
+{
+ GtkWidget *hbox, *label;
+
+  DBG(DBG_proc, "xsane_info_table_text_new\n");
+
+  hbox = gtk_hbox_new(/* homogeneous */ FALSE, 0);
+  gtk_table_attach_defaults(GTK_TABLE(table), hbox, row, row+1, colomn, colomn+1);
+  gtk_widget_show(hbox);
+
+  label = gtk_label_new(text);
+  gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 10);
+  gtk_widget_show(label);
+
+ return label;
+}
+/* ---------------------------------------------------------------------------------------------------------------------- */
+#if 0
+GtkWidget *xsane_info_text_new(GtkWidget *parent, gchar *text)
+{
+ GtkWidget *hbox, *label;
+
+  DBG(DBG_proc, "xsane_info_text_new\n");
+
+  hbox = gtk_hbox_new(/* homogeneous */ FALSE, 0);
+  gtk_box_pack_start(GTK_BOX(parent), hbox, TRUE, TRUE, 5);
+  gtk_widget_show(hbox);
+
+  label = gtk_label_new(text);
+  gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 10);
+  gtk_widget_show(label);
+
+ return label;
+}
+#endif
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_refresh_dialog(void)
+{
+  DBG(DBG_proc, "xsane_refresh_dialog\n");
+
+  xsane_back_gtk_refresh_dialog();
+}                    
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+/* Update the info line with the latest size information and update histogram.  */
+void xsane_update_param(void *arg)
+{
+ gchar buf[200];
+ const char *unit;
+
+  DBG(DBG_proc, "xsane_update_param\n");
+
+  if (!xsane.info_label)
+  {
+    return;
+  }
+
+  if (xsane.block_update_param) /* if we change more than one value, we only want to update all once */
+  {
+    return;
+  }
+
+  if (xsane.preview)
+  {
+    preview_update_surface(xsane.preview, 0);
+  }
+
+  if (sane_get_parameters(xsane.dev, &xsane.param) == SANE_STATUS_GOOD)
+  {
+   float size = (float) xsane.param.bytes_per_line * (float) xsane.param.lines;
+   int depth = xsane.param.depth;
+
+    if ( (depth == 16) && (preferences.reduce_16bit_to_8bit) )
+    {
+      depth = 8;
+      size /= 2;
+    }
+
+    unit = "B";
+
+    if (xsane.param.format >= SANE_FRAME_RED && xsane.param.format <= SANE_FRAME_BLUE)
+    {
+      size *= 3.0;
+      depth *= 3;
+    }
+    else if (xsane.param.format == SANE_FRAME_RGB)
+    {
+      depth *= 3;
+    }
+#ifdef SUPPORT_RGBA
+    else if (xsane.param.format == SANE_FRAME_RGBA)
+    {
+      depth *= 4;
+    }
+#endif
+
+    if (size >= 1024.0 * 1024.0)
+    {
+      size /= 1024.0 * 1024.0;
+      unit = "MB";
+    }
+    else if (size >= 1024.0)
+    {
+      size /= 1024.0;
+      unit = "KB";
+    }
+    snprintf(buf, sizeof(buf), "%d*%d*%d (%1.1f %s)", xsane.param.pixels_per_line, xsane.param.lines, depth, size, unit);
+
+    if (xsane.param.format == SANE_FRAME_GRAY)
+    {
+      xsane.xsane_colors = 1;
+    }
+#ifdef SUPPORT_RGBA
+    else if (xsane.param.format == SANE_FRAME_RGBA)
+    {
+      xsane.xsane_colors = 4;
+    }
+#endif
+    else /* RGB */
+    {
+      xsane.xsane_colors = 3;
+    }
+  }
+  else 
+  {
+    snprintf(buf, sizeof(buf), TEXT_INVALID_PARAMS);
+  }
+
+  gtk_label_set(GTK_LABEL(xsane.info_label), buf);
+
+
+  if (xsane.preview->surface_unit == SANE_UNIT_MM)
+  {
+   double dx, dy;
+
+    unit = xsane_back_gtk_unit_string(xsane.preview->surface_unit);
+
+    dx = fabs(xsane.preview->selection.coordinate[2] - xsane.preview->selection.coordinate[0]) / preferences.length_unit;
+    dy = fabs(xsane.preview->selection.coordinate[3] - xsane.preview->selection.coordinate[1]) / preferences.length_unit;
+
+    snprintf(buf, sizeof(buf), "%1.2f %s x %1.2f %s", dx, unit, dy, unit);
+    gtk_progress_set_format_string(GTK_PROGRESS(xsane.progress_bar), buf);
+  }
+
+  xsane_update_histogram(TRUE /* update raw */);
+
+  preview_display_valid(xsane.preview);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_define_output_filename(void)
+{
+ char buffer[256];
+
+  DBG(DBG_proc, "xsane_define_output_filename\n");
+
+  if (xsane.output_filename)
+  {
+    free(xsane.output_filename);
+    xsane.output_filename = 0;
+  }
+
+  if (!xsane.force_filename)
+  {
+    if (xsane.filetype)
+    {
+      snprintf(buffer, sizeof(buffer), "%s%s", preferences.filename, xsane.filetype);
+      xsane.output_filename = strdup(buffer);
+    }
+    else
+    {
+      xsane.output_filename = strdup(preferences.filename);
+    }
+  }
+  else
+  {
+      xsane.output_filename = strdup(xsane.external_filename);
+  }
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+int xsane_identify_output_format(char *filename, char **ext)
+{
+ char *extension;
+ int output_format=-1;
+
+  DBG(DBG_proc, "xsane_identify_output_format\n");
+
+  extension = strrchr(filename, '.');
+  if (extension)
+  {
+    extension++; /* skip "." */
+  }
+
+  output_format = XSANE_UNKNOWN;
+
+  if (extension)
+  {
+    if (!strcasecmp(extension, "raw"))
+    {
+      if (xsane.param.depth == 16)
+      {
+        output_format = XSANE_RAW16;
+      }
+    }
+    else if ( (!strcasecmp(extension, "pnm")) || (!strcasecmp(extension, "ppm")) ||
+              (!strcasecmp(extension, "pgm")) || (!strcasecmp(extension, "pbm")) )
+    {
+      if (xsane.param.depth == 16)
+      {
+        output_format = XSANE_PNM16;
+      }
+      else
+      {
+        output_format = XSANE_PNM;
+      }
+    }
+#ifdef HAVE_LIBPNG
+#ifdef HAVE_LIBZ
+    else if (!strcasecmp(extension, "png"))
+    {
+      output_format = XSANE_PNG;
+    }
+#endif
+#endif
+#ifdef HAVE_LIBJPEG
+    else if ( (!strcasecmp(extension, "jpg")) || (!strcasecmp(extension, "jpeg")) )
+    {
+      output_format = XSANE_JPEG;
+    }
+#endif
+    else if (!strcasecmp(extension, "ps"))
+    {
+      output_format = XSANE_PS;
+    }
+#ifdef HAVE_LIBTIFF
+    else if ( (!strcasecmp(extension, "tif")) || (!strcasecmp(extension, "tiff")) )
+    {
+      output_format = XSANE_TIFF;
+    }
+#endif
+#ifdef SUPPORT_RGBA
+    else if (!strcasecmp(extension, "rgba"))
+    {
+      output_format = XSANE_RGBA;
+    }
+#endif
+  }
+
+  if (ext)
+  {
+    if (extension)
+    {
+      *ext = strdup(extension);
+    }
+    else
+    {
+      *ext = 0;
+    }
+  }
+
+ return output_format;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_change_working_directory(void)
+{
+ char filename[PATH_MAX];
+ char windowname[256];
+
+  DBG(DBG_proc, "xsane_change_working_directory\n");
+
+  xsane_set_sensitivity(FALSE);
+
+  sprintf(windowname, "%s %s %s", xsane.prog_name, WINDOW_CHANGE_WORKING_DIR, xsane.device_text);
+  if (getcwd(filename, sizeof(filename)))
+  {
+    xsane_back_gtk_get_filename(windowname, filename, sizeof(filename), filename, TRUE, FALSE, TRUE);
+    if (chdir(filename))
+    {
+     char buf[256];
+
+      snprintf(buf, sizeof(buf), "%s %s (%s).", ERR_CHANGE_WORKING_DIR, filename, strerror(errno));
+      xsane_back_gtk_error(buf, TRUE);
+      xsane_set_sensitivity(TRUE);
+      return;
+    }
+  }
+
+  xsane_set_sensitivity(TRUE);
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+static int license_flag;
+static GtkWidget *license_dialog = NULL;
+
+static void xsane_license_button_callback(GtkWidget *widget, gpointer data)
+{
+  license_flag = (int) data;
+
+  DBG(DBG_proc ,"xsane_license_button_callback(%d)\n", license_flag);
+
+  gtk_widget_destroy(license_dialog);
+  license_dialog = NULL;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+int xsane_display_license(int ask_for_accept)
+/* returns FALSE if accepted, TRUE if not accepted */
+{
+ GtkWidget *vbox, *hbox, *button, *label;
+ GtkWidget *text, *vscrollbar;
+ GtkAccelGroup *accelerator_group;
+ char buf[1024];
+ char filename[PATH_MAX];
+ FILE *infile;
+
+  DBG(DBG_proc, "xsane_display_license(%d)\n", ask_for_accept);
+
+  if (license_dialog) /* make sure the dialog is only opend once */
+  {
+    return 0;
+  }
+
+  license_dialog = gtk_window_new(GTK_WINDOW_DIALOG);
+  gtk_widget_set_usize(license_dialog, 550, 580);
+  gtk_window_set_position(GTK_WINDOW(license_dialog), GTK_WIN_POS_CENTER);
+  gtk_window_set_policy(GTK_WINDOW(license_dialog), FALSE, TRUE, FALSE);
+  gtk_signal_connect(GTK_OBJECT(license_dialog), "delete_event",
+                     GTK_SIGNAL_FUNC(xsane_license_button_callback), (void *) -1); /* -1 = cancel */
+  snprintf(buf, sizeof(buf), "%s %s", xsane.prog_name, WINDOW_LICENSE);
+  gtk_window_set_title(GTK_WINDOW(license_dialog), buf);
+  xsane_set_window_icon(license_dialog, 0);
+
+  accelerator_group = gtk_accel_group_new();
+  gtk_accel_group_attach(accelerator_group, GTK_OBJECT(license_dialog));
+
+  vbox = gtk_vbox_new(FALSE, 5);
+  gtk_container_set_border_width(GTK_CONTAINER(vbox), 5);
+  gtk_container_add(GTK_CONTAINER(license_dialog), vbox);
+  gtk_widget_show(vbox); 
+
+  /* display XSane copyright message */
+  snprintf(buf, sizeof(buf), "XSane %s %s\n"
+                             "%s %s\n"
+                             "\n"
+                             "%s\n"
+                             "%s %s\n"
+                             "%s %s\n",
+                             TEXT_VERSION, XSANE_VERSION,
+                             XSANE_COPYRIGHT_SIGN, XSANE_COPYRIGHT_TXT,
+                             TEXT_GPL,
+                             TEXT_HOMEPAGE, XSANE_HOMEPAGE,
+                             TEXT_EMAIL, XSANE_EMAIL);
+
+  label = gtk_label_new(buf);
+  gtk_box_pack_start(GTK_BOX(vbox), label, FALSE, FALSE, 0);
+  gtk_widget_show(label);
+
+  /* add hbox with text and scrollbar to display the license text */
+  hbox = gtk_hbox_new(FALSE, 2);
+  gtk_container_set_border_width(GTK_CONTAINER(hbox), 4);
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, TRUE, 0); 
+  gtk_widget_show(hbox);
+ 
+  /* Create the GtkText widget */
+  text = gtk_text_new(NULL, NULL);
+  gtk_text_set_editable(GTK_TEXT(text), FALSE); /* text is not editable */
+  gtk_text_set_word_wrap(GTK_TEXT(text), TRUE); /* wrap complete words */
+  gtk_box_pack_start(GTK_BOX(hbox), text, TRUE, TRUE, 0); 
+  gtk_widget_show(text);
+ 
+  /* Add a vertical scrollbar to the GtkText widget */
+  vscrollbar = gtk_vscrollbar_new(GTK_TEXT(text)->vadj);
+  gtk_box_pack_start(GTK_BOX(hbox), vscrollbar, FALSE, FALSE, 0); 
+  gtk_widget_show(vscrollbar);
+
+  /* Freeze the text widget, ready for multiple updates */ 
+  gtk_text_freeze(GTK_TEXT(text)); 
+
+  /* Load the file text.c into the text window */
+  xsane_back_gtk_make_path(sizeof(filename), filename, "xsane", 0, "xsane-license", 0, ".txt", XSANE_PATH_SYSTEM);
+  infile = fopen(filename, "r");
+ 
+  if (infile)
+  {
+    char buffer[4096];
+    int nchars;
+ 
+    while (!feof(infile))
+    {
+      nchars = fread(buffer, 1, 4096, infile);
+      gtk_text_insert(GTK_TEXT(text), NULL, NULL, NULL, buffer, nchars);
+    }
+ 
+    fclose(infile);
+  } 
+  else
+  {
+    DBG(DBG_error0, "ERROR: license text not found. Looks like xsane is not installed correct.\n");
+   return TRUE;
+  }
+
+  /* Thaw the text widget, allowing the updates to become visible */
+  gtk_text_thaw(GTK_TEXT(text)); 
+
+
+
+  hbox = gtk_hbox_new(FALSE, 2);
+  gtk_container_set_border_width(GTK_CONTAINER(hbox), 4);
+  gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 0); 
+
+  if (ask_for_accept) /* show accept + not accept buttons */
+  {
+    button = gtk_button_new_with_label(BUTTON_ACCEPT);
+    gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_license_button_callback, (void *) 0 /* accept */);
+    gtk_container_add(GTK_CONTAINER(hbox), button);
+    gtk_widget_show(button);
+
+    button = gtk_button_new_with_label(BUTTON_NOT_ACCEPT);
+    gtk_widget_add_accelerator(button, "clicked", accelerator_group, GDK_Escape, 0, GTK_ACCEL_LOCKED);
+    GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
+    gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_license_button_callback, (void *) 1 /* not accept */);
+    gtk_container_add(GTK_CONTAINER(hbox), button);
+    gtk_widget_grab_default(button);
+    gtk_widget_show(button);
+  }
+  else /* show close button */
+  {
+    button = gtk_button_new_with_label(BUTTON_CLOSE);
+    gtk_widget_add_accelerator(button, "clicked", accelerator_group, GDK_Escape, 0, GTK_ACCEL_LOCKED);
+    GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
+    gtk_signal_connect(GTK_OBJECT(button), "clicked", (GtkSignalFunc) xsane_license_button_callback, (void *) 0 /* ok = accept */);
+    gtk_container_add(GTK_CONTAINER(hbox), button);
+    gtk_widget_grab_default(button);
+    gtk_widget_show(button);
+  }
+
+  gtk_widget_show(hbox);
+  gtk_widget_show(vbox);
+  gtk_widget_show(license_dialog);
+
+  if (ask_for_accept == 0) /* do not ask for accept */
+  {
+    return 0;
+  }
+  
+  license_flag = -255;
+
+  while(license_flag == -255)
+  {
+    gtk_main_iteration(); /* allow gtk to react to user action */
+  }
+
+  while (gtk_events_pending())
+  {
+    gtk_main_iteration();
+  }
+ 
+ return license_flag;
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_widget_get_uposition(GtkWidget *gtk_window, gint *x, gint *y)
+{
+  if (xsane.get_deskrelative_origin)
+  {
+    DBG(DBG_proc, "xsane_widget_get_uposition(deskrelative)\n");
+    gdk_window_get_deskrelative_origin(gtk_window->window, x, y);
+  }
+  else
+  {
+    DBG(DBG_proc, "xsane_widget_get_uposition(root)\n");
+    gdk_window_get_root_origin(gtk_window->window, x, y);
+  }
+}   
+
+/* ---------------------------------------------------------------------------------------------------------------------- */
+
+void xsane_widget_test_uposition(GtkWidget *gtk_window)
+{
+ gint x, y, x_orig, y_orig;
+
+  DBG(DBG_proc, "xsane_widget_test_uposition\n");
+
+  gtk_widget_realize(gtk_window);
+
+  while (!GTK_WIDGET_REALIZED(gtk_window) || (gtk_events_pending()))
+  {
+    gtk_main_iteration();
+  }
+
+  xsane_widget_get_uposition(gtk_window, &x, &y);
+  xsane_widget_get_uposition(gtk_window, &x, &y);
+
+  DBG(DBG_info, "xsane_widget_test_uposition: original position = %d, %d\n", x, y);
+
+  x_orig = x;
+  y_orig = y;
+  gtk_widget_set_uposition(gtk_window, x, y);
+
+  xsane_widget_get_uposition(gtk_window, &x, &y);
+  DBG(DBG_info, "xsane_widget_test_uposition: new position = %d, %d\n", x, y);
+
+  if ( (x != x_orig) || (y != y_orig) )
+  {
+    DBG(DBG_proc, "xsane_widget_test_uposition: using deskrelative function\n");
+    xsane.get_deskrelative_origin = 1;
+  }
+  else
+  {
+    DBG(DBG_proc, "xsane_widget_test_uposition: using root function\n");
+  }
+}
+
+/* ---------------------------------------------------------------------------------------------------------------------- */