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_url(VikWaypoint *wp, const gchar *url)
83 if ( url && url[0] != '\0' )
84 wp->url = g_strdup(url);
89 void vik_waypoint_set_image(VikWaypoint *wp, const gchar *image)
94 if ( image && image[0] != '\0' )
95 wp->image = g_strdup(image);
98 // NOTE - ATM the image (thumbnail) size is calculated on demand when needed to be first drawn
101 void vik_waypoint_set_symbol(VikWaypoint *wp, const gchar *symname)
103 const gchar *hashed_symname;
106 g_free ( wp->symbol );
108 // NB symbol_pixbuf is just a reference, so no need to free it
110 if ( symname && symname[0] != '\0' ) {
111 hashed_symname = a_get_hashed_sym ( symname );
112 if ( hashed_symname )
113 symname = hashed_symname;
114 wp->symbol = g_strdup ( symname );
115 wp->symbol_pixbuf = a_get_wp_sym ( wp->symbol );
119 wp->symbol_pixbuf = NULL;
123 void vik_waypoint_free(VikWaypoint *wp)
126 g_free ( wp->comment );
127 if ( wp->description )
128 g_free ( wp->description );
132 g_free ( wp->image );
134 g_free ( wp->symbol );
138 VikWaypoint *vik_waypoint_copy(const VikWaypoint *wp)
140 VikWaypoint *new_wp = vik_waypoint_new();
141 new_wp->coord = wp->coord;
142 new_wp->visible = wp->visible;
143 new_wp->altitude = wp->altitude;
144 new_wp->has_timestamp = wp->has_timestamp;
145 new_wp->timestamp = wp->timestamp;
146 vik_waypoint_set_name(new_wp,wp->name);
147 vik_waypoint_set_comment(new_wp,wp->comment);
148 vik_waypoint_set_description(new_wp,wp->description);
149 vik_waypoint_set_url(new_wp,wp->url);
150 vik_waypoint_set_image(new_wp,wp->image);
151 vik_waypoint_set_symbol(new_wp,wp->symbol);
156 * vik_waypoint_apply_dem_data:
157 * @wp: The Waypoint to operate on
158 * @skip_existing: When TRUE, don't change the elevation if the waypoint already has a value
160 * Set elevation data for a waypoint using available DEM information
162 * Returns: TRUE if the waypoint was updated
164 gboolean vik_waypoint_apply_dem_data ( VikWaypoint *wp, gboolean skip_existing )
166 gboolean updated = FALSE;
167 if ( !(skip_existing && wp->altitude != VIK_DEFAULT_ALTITUDE) ) {
168 gint16 elev = a_dems_get_elev_by_coord ( &(wp->coord), VIK_DEM_INTERPOL_BEST );
169 if ( elev != VIK_DEM_INVALID_ELEVATION ) {
170 wp->altitude = (gdouble)elev;
178 * Take a Waypoint and convert it into a byte array
180 void vik_waypoint_marshall ( VikWaypoint *wp, guint8 **data, guint *datalen)
182 GByteArray *b = g_byte_array_new();
185 // This creates space for fixed sized members like gints and whatnot
186 // and copies that amount of data from the waypoint to byte array
187 g_byte_array_append(b, (guint8 *)wp, sizeof(*wp));
189 // This allocates space for variant sized strings
190 // and copies that amount of data from the waypoint to byte array
191 #define vwm_append(s) \
192 len = (s) ? strlen(s)+1 : 0; \
193 g_byte_array_append(b, (guint8 *)&len, sizeof(len)); \
194 if (s) g_byte_array_append(b, (guint8 *)s, len);
196 vwm_append(wp->name);
197 vwm_append(wp->comment);
198 vwm_append(wp->description);
200 vwm_append(wp->image);
201 vwm_append(wp->symbol);
205 g_byte_array_free(b, FALSE);
210 * Take a byte array and convert it into a Waypoint
212 VikWaypoint *vik_waypoint_unmarshall (guint8 *data, guint datalen)
215 VikWaypoint *new_wp = vik_waypoint_new();
216 // This copies the fixed sized elements (i.e. visibility, altitude, image_width, etc...)
217 memcpy(new_wp, data, sizeof(*new_wp));
218 data += sizeof(*new_wp);
220 // Now the variant sized strings...
222 len = *(guint *)data; \
223 data += sizeof(len); \
225 (s) = g_strdup((gchar *)data); \
231 vwu_get(new_wp->name);
232 vwu_get(new_wp->comment);
233 vwu_get(new_wp->description);
234 vwu_get(new_wp->url);
235 vwu_get(new_wp->image);
236 vwu_get(new_wp->symbol);