1  /*
  2      Gpredict: Real-time satellite tracking and orbit prediction program
  3  
  4      Copyright (C)  2001-2017  Alexandru Csete, OZ9AEC.
  5  
  6      Comments, questions and bugreports should be submitted via
  7      http://sourceforge.net/projects/gpredict/
  8      More details can be found at the project home page:
  9  
 10              http://gpredict.oz9aec.net/
 11   
 12      This program is free software; you can redistribute it and/or modify
 13      it under the terms of the GNU General Public License as published by
 14      the Free Software Foundation; either version 2 of the License, or
 15      (at your option) any later version.
 16    
 17      This program is distributed in the hope that it will be useful,
 18      but WITHOUT ANY WARRANTY; without even the implied warranty of
 19      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 20      GNU General Public License for more details.
 21    
 22      You should have received a copy of the GNU General Public License
 23      along with this program; if not, visit http://www.fsf.org/
 24  */
 25  #include <gtk/gtk.h>
 26  #include <glib/gi18n.h>
 27  #ifdef HAVE_CONFIG_H
 28  #include <build-config.h>
 29  #endif
 30  #include "compat.h"
 31  #include "gpredict-help.h"
 32  #include "sat-cfg.h"
 33  #include "sat-log.h"
 34  
 35  
 36  extern GtkWidget *app;
 37  
 38  /**
 39   * Show a text file in the gpredict system directory
 40   * @param filename The basic file name
 41   *
 42   * This function is intended to display files like NEWS, COPYING, etc.
 43   * Note that on windows these files have .txt suffix, while on Unix they
 44   * do not.
 45   */
 46  void gpredict_help_show_txt(const gchar * filename)
 47  {
 48      GtkWidget      *dialog;
 49      GtkWidget      *swin;
 50      GtkWidget      *view;
 51      GtkTextBuffer  *txtbuf;
 52      GIOChannel     *chan;
 53      GError         *error = NULL;
 54      gchar          *fname;
 55      gchar          *buff;
 56      gsize           length;
 57  
 58      /* get system data directory */
 59  #ifdef G_OS_UNIX
 60      fname = g_strconcat(PACKAGE_DATA_DIR, G_DIR_SEPARATOR_S, filename, NULL);
 61  #endif
 62  #ifdef G_OS_WIN32
 63      buff = g_win32_get_package_installation_directory_of_module(NULL);
 64      fname = g_strconcat(buff, G_DIR_SEPARATOR_S, "doc",
 65                          G_DIR_SEPARATOR_S, filename, ".txt", NULL);
 66      g_free(buff);
 67  #endif
 68  
 69      /* load file into buffer */
 70      chan = g_io_channel_new_file(fname, "r", &error);
 71      if (error != NULL)
 72      {
 73          sat_log_log(SAT_LOG_LEVEL_ERROR,
 74                      _("%s: Failed to load %s (%s)"),
 75                      __func__, fname, error->message);
 76          g_free(fname);
 77          g_clear_error(&error);
 78  
 79          return;
 80      }
 81  
 82      g_io_channel_read_to_end(chan, &buff, &length, &error);
 83      if (error != NULL)
 84      {
 85          sat_log_log(SAT_LOG_LEVEL_ERROR,
 86                      _("%s: Error reading %s (%s)"),
 87                      __func__, fname, error->message);
 88  
 89          g_free(buff);
 90          g_clear_error(&error);
 91          g_io_channel_shutdown(chan, TRUE, NULL);
 92          g_io_channel_unref(chan);
 93  
 94          return;
 95      }
 96  
 97      g_free(fname);
 98  
 99      /* create text view and text buffer widgets */
100      view = gtk_text_view_new();
101      gtk_text_view_set_editable(GTK_TEXT_VIEW(view), FALSE);
102      gtk_text_view_set_cursor_visible(GTK_TEXT_VIEW(view), FALSE);
103      gtk_text_view_set_left_margin(GTK_TEXT_VIEW(view), 15);
104      gtk_text_view_set_right_margin(GTK_TEXT_VIEW(view), 15);
105      if (GTK_MINOR_VERSION >= 16)
106          gtk_text_view_set_monospace(GTK_TEXT_VIEW(view), FALSE);
107  
108      txtbuf = gtk_text_view_get_buffer(GTK_TEXT_VIEW(view));
109  
110      gtk_text_buffer_set_text(txtbuf, buff, -1);
111      g_free(buff);
112  
113      /* scrolled window */
114      swin = gtk_scrolled_window_new(NULL, NULL);
115      gtk_scrolled_window_set_shadow_type(GTK_SCROLLED_WINDOW(swin),
116                                          GTK_SHADOW_ETCHED_IN);
117      gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(swin),
118                                     GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
119      gtk_container_add(GTK_CONTAINER(swin), view);
120  
121      /* create and show dialogue with textbuffer */
122      dialog = gtk_dialog_new_with_buttons(_("Gpredict Info"),
123                                           GTK_WINDOW(app), 0,
124                                           "_Close", GTK_RESPONSE_ACCEPT, NULL);
125      gtk_widget_set_size_request(dialog, -1, 450);
126      buff = icon_file_name("gpredict-icon.png");
127      gtk_window_set_icon_from_file(GTK_WINDOW(dialog), buff, NULL);
128      g_free(buff);
129  
130      g_signal_connect_swapped(dialog, "response",
131                               G_CALLBACK(gtk_widget_destroy), dialog);
132  
133      gtk_box_pack_start(GTK_BOX
134                         (gtk_dialog_get_content_area(GTK_DIALOG(dialog))), swin,
135                         TRUE, TRUE, 0);
136      gtk_widget_show_all(dialog);
137  }