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
26 #include "vikwaypoint.h"
28 #include "garminsymbols.h"
30 #include <glib/gi18n.h>
32 VikWaypoint *vik_waypoint_new()
34 VikWaypoint *wp = g_malloc0 ( sizeof ( VikWaypoint ) );
35 wp->altitude = VIK_DEFAULT_ALTITUDE;
36 wp->name = g_strdup(_("Waypoint"));
40 // Hmmm tempted to put in new constructor
41 void vik_waypoint_set_name(VikWaypoint *wp, const gchar *name)
46 wp->name = g_strdup(name);
49 void vik_waypoint_set_comment_no_copy(VikWaypoint *wp, gchar *comment)
52 g_free ( wp->comment );
53 wp->comment = comment;
56 void vik_waypoint_set_comment(VikWaypoint *wp, const gchar *comment)
59 g_free ( wp->comment );
61 if ( comment && comment[0] != '\0' )
62 wp->comment = g_strdup(comment);
67 void vik_waypoint_set_description(VikWaypoint *wp, const gchar *description)
69 if ( wp->description )
70 g_free ( wp->description );
72 if ( description && description[0] != '\0' )
73 wp->description = g_strdup(description);
75 wp->description = NULL;
78 void vik_waypoint_set_source(VikWaypoint *wp, const gchar *source)
81 g_free ( wp->source );
83 if ( source && source[0] != '\0' )
84 wp->source = g_strdup(source);
89 void vik_waypoint_set_type(VikWaypoint *wp, const gchar *type)
94 if ( type && type[0] != '\0' )
95 wp->type = g_strdup(type);
100 void vik_waypoint_set_url(VikWaypoint *wp, const gchar *url)
105 if ( url && url[0] != '\0' )
106 wp->url = g_strdup(url);
111 void vik_waypoint_set_image(VikWaypoint *wp, const gchar *image)
114 g_free ( wp->image );
116 if ( image && image[0] != '\0' )
117 wp->image = g_strdup(image);
120 // NOTE - ATM the image (thumbnail) size is calculated on demand when needed to be first drawn
123 void vik_waypoint_set_symbol(VikWaypoint *wp, const gchar *symname)
125 const gchar *hashed_symname;
128 g_free ( wp->symbol );
130 // NB symbol_pixbuf is just a reference, so no need to free it
132 if ( symname && symname[0] != '\0' ) {
133 hashed_symname = a_get_hashed_sym ( symname );
134 if ( hashed_symname )
135 symname = hashed_symname;
136 wp->symbol = g_strdup ( symname );
137 wp->symbol_pixbuf = a_get_wp_sym ( wp->symbol );
141 wp->symbol_pixbuf = NULL;
145 void vik_waypoint_free(VikWaypoint *wp)
150 g_free ( wp->comment );
151 if ( wp->description )
152 g_free ( wp->description );
154 g_free ( wp->source );
160 g_free ( wp->image );
162 g_free ( wp->symbol );
166 VikWaypoint *vik_waypoint_copy(const VikWaypoint *wp)
168 VikWaypoint *new_wp = vik_waypoint_new();
169 new_wp->coord = wp->coord;
170 new_wp->visible = wp->visible;
171 new_wp->altitude = wp->altitude;
172 new_wp->has_timestamp = wp->has_timestamp;
173 new_wp->timestamp = wp->timestamp;
174 vik_waypoint_set_name(new_wp,wp->name);
175 vik_waypoint_set_comment(new_wp,wp->comment);
176 vik_waypoint_set_description(new_wp,wp->description);
177 vik_waypoint_set_source(new_wp,wp->source);
178 vik_waypoint_set_type(new_wp,wp->type);
179 vik_waypoint_set_url(new_wp,wp->url);
180 vik_waypoint_set_image(new_wp,wp->image);
181 vik_waypoint_set_symbol(new_wp,wp->symbol);
186 * vik_waypoint_apply_dem_data:
187 * @wp: The Waypoint to operate on
188 * @skip_existing: When TRUE, don't change the elevation if the waypoint already has a value
190 * Set elevation data for a waypoint using available DEM information
192 * Returns: TRUE if the waypoint was updated
194 gboolean vik_waypoint_apply_dem_data ( VikWaypoint *wp, gboolean skip_existing )
196 gboolean updated = FALSE;
197 if ( !(skip_existing && wp->altitude != VIK_DEFAULT_ALTITUDE) ) {
198 gint16 elev = a_dems_get_elev_by_coord ( &(wp->coord), VIK_DEM_INTERPOL_BEST );
199 if ( elev != VIK_DEM_INVALID_ELEVATION ) {
200 wp->altitude = (gdouble)elev;
208 * Take a Waypoint and convert it into a byte array
210 void vik_waypoint_marshall ( VikWaypoint *wp, guint8 **data, guint *datalen)
212 GByteArray *b = g_byte_array_new();
215 // This creates space for fixed sized members like gints and whatnot
216 // and copies that amount of data from the waypoint to byte array
217 g_byte_array_append(b, (guint8 *)wp, sizeof(*wp));
219 // This allocates space for variant sized strings
220 // and copies that amount of data from the waypoint to byte array
221 #define vwm_append(s) \
222 len = (s) ? strlen(s)+1 : 0; \
223 g_byte_array_append(b, (guint8 *)&len, sizeof(len)); \
224 if (s) g_byte_array_append(b, (guint8 *)s, len);
226 vwm_append(wp->name);
227 vwm_append(wp->comment);
228 vwm_append(wp->description);
229 vwm_append(wp->source);
230 vwm_append(wp->type);
232 vwm_append(wp->image);
233 vwm_append(wp->symbol);
237 g_byte_array_free(b, FALSE);
242 * Take a byte array and convert it into a Waypoint
244 VikWaypoint *vik_waypoint_unmarshall (guint8 *data, guint datalen)
247 VikWaypoint *new_wp = vik_waypoint_new();
248 // This copies the fixed sized elements (i.e. visibility, altitude, image_width, etc...)
249 memcpy(new_wp, data, sizeof(*new_wp));
250 data += sizeof(*new_wp);
252 // Now the variant sized strings...
254 len = *(guint *)data; \
255 data += sizeof(len); \
257 (s) = g_strdup((gchar *)data); \
263 vwu_get(new_wp->name);
264 vwu_get(new_wp->comment);
265 vwu_get(new_wp->description);
266 vwu_get(new_wp->source);
267 vwu_get(new_wp->type);
268 vwu_get(new_wp->url);
269 vwu_get(new_wp->image);
270 vwu_get(new_wp->symbol);