2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
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.
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.
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
22 #ifdef VIK_CONFIG_GEOCACHES
25 #include <glib/gi18n.h>
34 GtkWidget *center_entry;
35 GtkWidget *miles_radius_spin;
39 gboolean circle_onscreen;
40 gint circle_x, circle_y, circle_width;
41 } datasource_gc_widgets_t;
44 static gpointer datasource_gc_init ( );
45 static void datasource_gc_add_setup_widgets ( GtkWidget *dialog, VikViewport *vvp, gpointer user_data );
46 static void datasource_gc_get_cmd_string ( datasource_gc_widgets_t *widgets, gchar **cmd, gchar **input_file_type );
47 static void datasource_gc_cleanup ( datasource_gc_widgets_t *widgets );
48 static gchar *datasource_gc_check_existence ();
50 #define METERSPERMILE 1609.344
52 VikDataSourceInterface vik_datasource_gc_interface = {
53 N_("Download Geocaches"),
54 N_("Geocaching.com Caches"),
55 VIK_DATASOURCE_SHELL_CMD,
56 VIK_DATASOURCE_ADDTOLAYER,
57 VIK_DATASOURCE_INPUTTYPE_NONE,
59 (VikDataSourceInitFunc) datasource_gc_init,
60 (VikDataSourceCheckExistenceFunc) datasource_gc_check_existence,
61 (VikDataSourceAddSetupWidgetsFunc) datasource_gc_add_setup_widgets,
62 (VikDataSourceGetCmdStringFunc) datasource_gc_get_cmd_string,
63 (VikDataSourceProgressFunc) NULL,
64 (VikDataSourceAddProgressWidgetsFunc) NULL,
65 (VikDataSourceCleanupFunc) datasource_gc_cleanup
68 static gpointer datasource_gc_init ( )
70 datasource_gc_widgets_t *widgets = g_malloc(sizeof(*widgets));
74 static gchar *datasource_gc_check_existence ()
76 gchar *gcget_location = g_find_program_in_path("gcget");
77 if ( gcget_location ) {
78 g_free(gcget_location);
81 return g_strdup(_("Can't find gcget in path! Check that you have installed gcget correctly."));
84 static void datasource_gc_draw_circle ( datasource_gc_widgets_t *widgets )
87 if ( widgets->circle_onscreen ) {
88 vik_viewport_draw_arc ( widgets->vvp, widgets->circle_gc, FALSE,
89 widgets->circle_x - widgets->circle_width/2,
90 widgets->circle_y - widgets->circle_width/2,
91 widgets->circle_width, widgets->circle_width, 0, 360*64 );
93 /* calculate widgets circle_x and circle_y */
94 /* split up lat,lon into lat and lon */
95 if ( 2 == sscanf ( gtk_entry_get_text ( GTK_ENTRY(widgets->center_entry) ), "%lf,%lf", &lat, &lon ) ) {
100 ll.lat = lat; ll.lon = lon;
101 vik_coord_load_from_latlon ( &c, vik_viewport_get_coord_mode ( widgets->vvp ), &ll );
102 vik_viewport_coord_to_screen ( widgets->vvp, &c, &x, &y );
103 /* TODO: real calculation */
104 if ( x > -1000 && y > -1000 && x < (vik_viewport_get_width(widgets->vvp) + 1000) &&
105 y < (vik_viewport_get_width(widgets->vvp) + 1000) ) {
107 gdouble pixels_per_meter;
109 widgets->circle_x = x;
110 widgets->circle_y = y;
112 /* determine miles per pixel */
113 vik_viewport_screen_to_coord ( widgets->vvp, 0, vik_viewport_get_height(widgets->vvp)/2, &c1 );
114 vik_viewport_screen_to_coord ( widgets->vvp, vik_viewport_get_width(widgets->vvp), vik_viewport_get_height(widgets->vvp)/2, &c2 );
115 pixels_per_meter = ((gdouble)vik_viewport_get_width(widgets->vvp)) / vik_coord_diff(&c1, &c2);
117 /* this is approximate */
118 widgets->circle_width = gtk_spin_button_get_value_as_float ( GTK_SPIN_BUTTON(widgets->miles_radius_spin) )
119 * METERSPERMILE * pixels_per_meter * 2;
121 vik_viewport_draw_arc ( widgets->vvp, widgets->circle_gc, FALSE,
122 widgets->circle_x - widgets->circle_width/2,
123 widgets->circle_y - widgets->circle_width/2,
124 widgets->circle_width, widgets->circle_width, 0, 360*64 );
126 widgets->circle_onscreen = TRUE;
128 widgets->circle_onscreen = FALSE;
131 /* see if onscreen */
133 vik_viewport_sync ( widgets->vvp );
136 static void datasource_gc_add_setup_widgets ( GtkWidget *dialog, VikViewport *vvp, gpointer user_data )
138 datasource_gc_widgets_t *widgets = (datasource_gc_widgets_t *)user_data;
139 GtkWidget *num_label, *center_label, *miles_radius_label;
143 num_label = gtk_label_new (_("Number geocaches:"));
144 widgets->num_spin = gtk_spin_button_new ( GTK_ADJUSTMENT(gtk_adjustment_new( 100, 1, 1000, 10, 20, 50 )), 25, 0 );
145 center_label = gtk_label_new (_("Centered around:"));
146 widgets->center_entry = gtk_entry_new();
147 miles_radius_label = gtk_label_new ("Miles Radius:");
148 widgets->miles_radius_spin = gtk_spin_button_new ( GTK_ADJUSTMENT(gtk_adjustment_new( 100, 1, 1000, 5, 20, 50 )), 25, 2 );
150 vik_coord_to_latlon ( vik_viewport_get_center(vvp), &ll );
151 s_ll = g_strdup_printf("%f,%f", ll.lat, ll.lon );
152 gtk_entry_set_text ( GTK_ENTRY(widgets->center_entry), s_ll );
157 widgets->circle_gc = vik_viewport_new_gc ( vvp, "#000000", 3 );
158 gdk_gc_set_function ( widgets->circle_gc, GDK_INVERT );
159 widgets->circle_onscreen = FALSE;
160 datasource_gc_draw_circle ( widgets );
162 g_signal_connect_swapped ( G_OBJECT(widgets->center_entry), "changed", G_CALLBACK(datasource_gc_draw_circle), widgets );
163 g_signal_connect_swapped ( G_OBJECT(widgets->miles_radius_spin), "value-changed", G_CALLBACK(datasource_gc_draw_circle), widgets );
165 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), num_label, FALSE, FALSE, 5 );
166 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), widgets->num_spin, FALSE, FALSE, 5 );
167 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), center_label, FALSE, FALSE, 5 );
168 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), widgets->center_entry, FALSE, FALSE, 5 );
169 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), miles_radius_label, FALSE, FALSE, 5 );
170 gtk_box_pack_start ( GTK_BOX(GTK_DIALOG(dialog)->vbox), widgets->miles_radius_spin, FALSE, FALSE, 5 );
171 gtk_widget_show_all(dialog);
174 static void datasource_gc_get_cmd_string ( datasource_gc_widgets_t *widgets, gchar **cmd, gchar **input_file_type )
176 gchar *safe_string = g_shell_quote ( gtk_entry_get_text ( GTK_ENTRY(widgets->center_entry) ) );
177 *cmd = g_strdup_printf( "gcget %s %d %.2lf", safe_string,
178 gtk_spin_button_get_value_as_int ( GTK_SPIN_BUTTON(widgets->num_spin) ),
179 gtk_spin_button_get_value_as_float ( GTK_SPIN_BUTTON(widgets->miles_radius_spin) ) );
180 *input_file_type = NULL;
181 g_free ( safe_string );
184 static void datasource_gc_cleanup ( datasource_gc_widgets_t *widgets )
186 if ( widgets->circle_onscreen ) {
187 vik_viewport_draw_arc ( widgets->vvp, widgets->circle_gc, FALSE,
188 widgets->circle_x - widgets->circle_width/2,
189 widgets->circle_y - widgets->circle_width/2,
190 widgets->circle_width, widgets->circle_width, 0, 360*64 );
191 vik_viewport_sync( widgets->vvp );
195 #endif /* VIK_CONFIG_GEOCACHES */