src/datasource_gc.c

   1 /*
   2  * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
   3  *
   4  * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24 #ifdef VIK_CONFIG_GEOCACHES
  25 #include <string.h>
  26
  27 #include <glib/gi18n.h>
  28
  29 #include "viking.h"
  30 #include "babel.h"
  31 #include "gpx.h"
  32 #include "acquire.h"
  33 #include "preferences.h"
  34
  35 /* params will be geocaching.username, geocaching.password */
  36 /* we have to make sure these don't collide. */
  37 #define VIKING_GC_PARAMS_GROUP_KEY "geocaching"
  38 #define VIKING_GC_PARAMS_NAMESPACE "geocaching."
  39
  40
  41 typedef struct {
  42   GtkWidget *num_spin;
  43   GtkWidget *center_entry;
  44   GtkWidget *miles_radius_spin;
  45
  46   GdkGC *circle_gc;
  47   VikViewport *vvp;
  48   gboolean circle_onscreen;
  49   gint circle_x, circle_y, circle_width;
  50 } datasource_gc_widgets_t;
  51
  52
  53 static gpointer datasource_gc_init ( );
  54 static void datasource_gc_add_setup_widgets ( GtkWidget *dialog, VikViewport *vvp, gpointer user_data );
  55 static void datasource_gc_get_cmd_string ( datasource_gc_widgets_t *widgets, gchar **cmd, gchar **input_file_type );
  56 static void datasource_gc_cleanup ( datasource_gc_widgets_t *widgets );
  57 static gchar *datasource_gc_check_existence ();
  58
  59 #define METERSPERMILE 1609.344
  60
  61 VikDataSourceInterface vik_datasource_gc_interface = {
  62   N_("Download Geocaches"),
  63   N_("Geocaching.com Caches"),
  64   VIK_DATASOURCE_SHELL_CMD,
  65   VIK_DATASOURCE_ADDTOLAYER,
  66   VIK_DATASOURCE_INPUTTYPE_NONE,
  67   TRUE,
  68   (VikDataSourceInitFunc)               datasource_gc_init,
  69   (VikDataSourceCheckExistenceFunc)     datasource_gc_check_existence,
  70   (VikDataSourceAddSetupWidgetsFunc)    datasource_gc_add_setup_widgets,
  71   (VikDataSourceGetCmdStringFunc)       datasource_gc_get_cmd_string,
  72   (VikDataSourceProgressFunc)           NULL,
  73   (VikDataSourceAddProgressWidgetsFunc) NULL,
  74   (VikDataSourceCleanupFunc)            datasource_gc_cleanup
  75 };
  76
  77 static VikLayerParam prefs[] = {
  78   { VIKING_GC_PARAMS_NAMESPACE "username", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, N_("geocaching.com username:"), VIK_LAYER_WIDGET_ENTRY },
  79   { VIKING_GC_PARAMS_NAMESPACE "password", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, N_("geocaching.com password:"), VIK_LAYER_WIDGET_ENTRY },
  80 };
  81
  82 void a_datasource_gc_init()
  83 {
  84   a_preferences_register_group ( VIKING_GC_PARAMS_GROUP_KEY, "Geocaching" );
  85
  86   VikLayerParamData tmp;
  87   tmp.s = "username";
  88   a_preferences_register(prefs, tmp, VIKING_GC_PARAMS_GROUP_KEY);
  89   tmp.s = "password";
  90   a_preferences_register(prefs+1, tmp, VIKING_GC_PARAMS_GROUP_KEY);
  91 }
  92
  93
  94 static gpointer datasource_gc_init ( )
  95 {
  96   datasource_gc_widgets_t *widgets = g_malloc(sizeof(*widgets));
  97   return widgets;
  98 }
  99
 100 static gchar *datasource_gc_check_existence ()
 101 {
 102   gchar *gcget_location = g_find_program_in_path("gcget");
 103   if ( gcget_location ) {
 104     g_free(gcget_location);
 105     return NULL;
 106   }
 107   return g_strdup(_("Can't find gcget in path! Check that you have installed gcget correctly."));
 108 }
 109
 110 static void datasource_gc_draw_circle ( datasource_gc_widgets_t *widgets )
 111 {
 112   gdouble lat, lon;
 113   if ( widgets->circle_onscreen ) {
 114     vik_viewport_draw_arc ( widgets->vvp, widgets->circle_gc, FALSE,
 115                 widgets->circle_x - widgets->circle_width/2,
 116                 widgets->circle_y - widgets->circle_width/2,
 117                 widgets->circle_width, widgets->circle_width, 0, 360*64 );
 118   }
 119   /* calculate widgets circle_x and circle_y */
 120   /* split up lat,lon into lat and lon */
 121   if ( 2 == sscanf ( gtk_entry_get_text ( GTK_ENTRY(widgets->center_entry) ), "%lf,%lf", &lat, &lon ) ) {
 122     struct LatLon ll;
 123     VikCoord c;
 124     gint x, y;
 125
 126     ll.lat = lat; ll.lon = lon;
 127     vik_coord_load_from_latlon ( &c, vik_viewport_get_coord_mode ( widgets->vvp ), &ll );
 128     vik_viewport_coord_to_screen ( widgets->vvp, &c, &x, &y );
 129     /* TODO: real calculation */
 130     if ( x > -1000 && y > -1000 && x < (vik_viewport_get_width(widgets->vvp) + 1000) &&
 131         y < (vik_viewport_get_width(widgets->vvp) + 1000) ) {
 132       VikCoord c1, c2;
 133       gdouble pixels_per_meter;
 134
 135       widgets->circle_x = x;
 136       widgets->circle_y = y;
 137
 138       /* determine miles per pixel */
 139       vik_viewport_screen_to_coord ( widgets->vvp, 0, vik_viewport_get_height(widgets->vvp)/2, &c1 );
 140       vik_viewport_screen_to_coord ( widgets->vvp, vik_viewport_get_width(widgets->vvp), vik_viewport_get_height(widgets->vvp)/2, &c2 );
 141       pixels_per_meter = ((gdouble)vik_viewport_get_width(widgets->vvp)) / vik_coord_diff(&c1, &c2);
 142
 143       /* this is approximate */
 144       widgets->circle_width = gtk_spin_button_get_value_as_float ( GTK_SPIN_BUTTON(widgets->miles_radius_spin) )
 145                 * METERSPERMILE * pixels_per_meter * 2;
 146
 147       vik_viewport_draw_arc ( widgets->vvp, widgets->circle_gc, FALSE,
 148                 widgets->circle_x - widgets->circle_width/2,
 149                 widgets->circle_y - widgets->circle_width/2,
 150                 widgets->circle_width, widgets->circle_width, 0, 360*64 );
 151
 152       widgets->circle_onscreen = TRUE;
 153     } else
 154       widgets->circle_onscreen = FALSE;
 155   }
 156
 157   /* see if onscreen */
 158   /* okay */
 159   vik_viewport_sync ( widgets->vvp );
 160 }
 161
 162 static void datasource_gc_add_setup_widgets ( GtkWidget *dialog, VikViewport *vvp, gpointer user_data )
 163 {
 164   datasource_gc_widgets_t *widgets = (datasource_gc_widgets_t *)user_data;
 165   GtkWidget *num_label, *center_label, *miles_radius_label;
 166   struct LatLon ll;
 167   gchar *s_ll;
 168
 169   num_label = gtk_label_new (_("Number geocaches:"));
 170   widgets->num_spin = gtk_spin_button_new ( GTK_ADJUSTMENT(gtk_adjustment_new( 100, 1, 1000, 10, 20, 50 )), 25, 0 );
 171   center_label = gtk_label_new (_("Centered around:"));
 172   widgets->center_entry = gtk_entry_new();
 173   miles_radius_label = gtk_label_new ("Miles Radius:");
 174   widgets->miles_radius_spin = gtk_spin_button_new ( GTK_ADJUSTMENT(gtk_adjustment_new( 100, 1, 1000, 5, 20, 50 )), 25, 2 );
 175
 176   vik_coord_to_latlon ( vik_viewport_get_center(vvp), &ll );
 177   s_ll = g_strdup_printf("%f,%f", ll.lat, ll.lon );
 178   gtk_entry_set_text ( GTK_ENTRY(widgets->center_entry), s_ll );
 179   g_free ( s_ll );
 180
 181
 182   widgets->vvp = vvp;
 183   widgets->circle_gc = vik_viewport_new_gc ( vvp, "#000000", 3 );
 184   gdk_gc_set_function ( widgets->circle_gc, GDK_INVERT );
 185   widgets->circle_onscreen = FALSE;
 186   datasource_gc_draw_circle ( widgets );
 187
 188   g_signal_connect_swapped ( G_OBJECT(widgets->center_entry), "changed", G_CALLBACK(datasource_gc_draw_circle), widgets );
 189   g_signal_connect_swapped ( G_OBJECT(widgets->miles_radius_spin), "value-changed", G_CALLBACK(datasource_gc_draw_circle), widgets );
 190
 191   gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), num_label, FALSE, FALSE, 5 );
 192   gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), widgets->num_spin, FALSE, FALSE, 5 );
 193   gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), center_label, FALSE, FALSE, 5 );
 194   gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), widgets->center_entry, FALSE, FALSE, 5 );
 195   gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), miles_radius_label, FALSE, FALSE, 5 );
 196   gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), widgets->miles_radius_spin, FALSE, FALSE, 5 );
 197   gtk_widget_show_all(dialog);
 198 }
 199
 200 static void datasource_gc_get_cmd_string ( datasource_gc_widgets_t *widgets, gchar **cmd, gchar **input_file_type )
 201 {
 202   gchar *safe_string = g_shell_quote ( gtk_entry_get_text ( GTK_ENTRY(widgets->center_entry) ) );
 203   gchar *safe_user = g_shell_quote ( a_preferences_get ( VIKING_GC_PARAMS_NAMESPACE "username")->s );
 204   gchar *safe_pass = g_shell_quote ( a_preferences_get ( VIKING_GC_PARAMS_NAMESPACE "password")->s );
 205   *cmd = g_strdup_printf( "gcget -u %s -p -- %s %s %d %.2lf", safe_user, safe_pass, safe_string,
 206         gtk_spin_button_get_value_as_int ( GTK_SPIN_BUTTON(widgets->num_spin) ),
 207         gtk_spin_button_get_value_as_float ( GTK_SPIN_BUTTON(widgets->miles_radius_spin) ) );
 208   *input_file_type = NULL;
 209   g_free ( safe_string );
 210   g_free ( safe_user );
 211   g_free ( safe_pass );
 212 }
 213
 214 static void datasource_gc_cleanup ( datasource_gc_widgets_t *widgets )
 215 {
 216   if ( widgets->circle_onscreen ) {
 217     vik_viewport_draw_arc ( widgets->vvp, widgets->circle_gc, FALSE,
 218                 widgets->circle_x - widgets->circle_width/2,
 219                 widgets->circle_y - widgets->circle_width/2,
 220                 widgets->circle_width, widgets->circle_width, 0, 360*64 );
 221     vik_viewport_sync( widgets->vvp );
 222   }
 223   g_free ( widgets );
 224 }
 225 #endif /* VIK_CONFIG_GEOCACHES */