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_image(VikWaypoint *wp, const gchar *image)
83 if ( image && image[0] != '\0' )
84 wp->image = g_strdup(image);
87 // NOTE - ATM the image (thumbnail) size is calculated on demand when needed to be first drawn
90 void vik_waypoint_set_symbol(VikWaypoint *wp, const gchar *symname)
92 const gchar *hashed_symname;
95 g_free ( wp->symbol );
97 // NB symbol_pixbuf is just a reference, so no need to free it
99 if ( symname && symname[0] != '\0' ) {
100 hashed_symname = a_get_hashed_sym ( symname );
101 if ( hashed_symname )
102 symname = hashed_symname;
103 wp->symbol = g_strdup ( symname );
104 wp->symbol_pixbuf = a_get_wp_sym ( wp->symbol );
108 wp->symbol_pixbuf = NULL;
112 void vik_waypoint_free(VikWaypoint *wp)
115 g_free ( wp->comment );
116 if ( wp->description )
117 g_free ( wp->description );
119 g_free ( wp->image );
121 g_free ( wp->symbol );
125 VikWaypoint *vik_waypoint_copy(const VikWaypoint *wp)
127 VikWaypoint *new_wp = vik_waypoint_new();
128 new_wp->coord = wp->coord;
129 new_wp->visible = wp->visible;
130 new_wp->altitude = wp->altitude;
131 new_wp->has_timestamp = wp->has_timestamp;
132 new_wp->timestamp = wp->timestamp;
133 vik_waypoint_set_name(new_wp,wp->name);
134 vik_waypoint_set_comment(new_wp,wp->comment);
135 vik_waypoint_set_description(new_wp,wp->description);
136 vik_waypoint_set_image(new_wp,wp->image);
137 vik_waypoint_set_symbol(new_wp,wp->symbol);
142 * vik_waypoint_apply_dem_data:
143 * @wp: The Waypoint to operate on
144 * @skip_existing: When TRUE, don't change the elevation if the waypoint already has a value
146 * Set elevation data for a waypoint using available DEM information
148 * Returns: TRUE if the waypoint was updated
150 gboolean vik_waypoint_apply_dem_data ( VikWaypoint *wp, gboolean skip_existing )
152 gboolean updated = FALSE;
153 if ( !(skip_existing && wp->altitude != VIK_DEFAULT_ALTITUDE) ) {
154 gint16 elev = a_dems_get_elev_by_coord ( &(wp->coord), VIK_DEM_INTERPOL_BEST );
155 if ( elev != VIK_DEM_INVALID_ELEVATION ) {
156 wp->altitude = (gdouble)elev;
164 * Take a Waypoint and convert it into a byte array
166 void vik_waypoint_marshall ( VikWaypoint *wp, guint8 **data, guint *datalen)
168 GByteArray *b = g_byte_array_new();
171 // This creates space for fixed sized members like gints and whatnot
172 // and copies that amount of data from the waypoint to byte array
173 g_byte_array_append(b, (guint8 *)wp, sizeof(*wp));
175 // This allocates space for variant sized strings
176 // and copies that amount of data from the waypoint to byte array
177 #define vwm_append(s) \
178 len = (s) ? strlen(s)+1 : 0; \
179 g_byte_array_append(b, (guint8 *)&len, sizeof(len)); \
180 if (s) g_byte_array_append(b, (guint8 *)s, len);
182 vwm_append(wp->name);
183 vwm_append(wp->comment);
184 vwm_append(wp->description);
185 vwm_append(wp->image);
186 vwm_append(wp->symbol);
190 g_byte_array_free(b, FALSE);
195 * Take a byte array and convert it into a Waypoint
197 VikWaypoint *vik_waypoint_unmarshall (guint8 *data, guint datalen)
200 VikWaypoint *new_wp = vik_waypoint_new();
201 // This copies the fixed sized elements (i.e. visibility, altitude, image_width, etc...)
202 memcpy(new_wp, data, sizeof(*new_wp));
203 data += sizeof(*new_wp);
205 // Now the variant sized strings...
207 len = *(guint *)data; \
208 data += sizeof(len); \
210 (s) = g_strdup((gchar *)data); \
216 vwu_get(new_wp->name);
217 vwu_get(new_wp->comment);
218 vwu_get(new_wp->description);
219 vwu_get(new_wp->image);
220 vwu_get(new_wp->symbol);