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/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4; tab-width: 4 -*- */
/* vim:set et sw=4 ts=4 */
/*
* Copyright (C) 2013 John Stowers <john.stowers@gmail.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
/**
* SECTION:osm-gps-map-track
* @short_description: A list of GPS points
* @stability: Stable
* @include: osm-gps-map.h
*
* #OsmGpsMapTrack stores multiple #OsmGpsMapPoint objects, i.e. a track, and
* describes how such a track should be drawn on the map
* (see osm_gps_map_track_add()), including its colour, width, etc.
**/
#include <gdk/gdk.h>
#include <math.h>
#include "converter.h"
#include "osm-gps-map-track.h"
G_DEFINE_TYPE (OsmGpsMapTrack, osm_gps_map_track, G_TYPE_OBJECT)
enum
{
PROP_0,
PROP_VISIBLE,
PROP_TRACK,
PROP_LINE_WIDTH,
PROP_ALPHA,
PROP_COLOR,
PROP_EDITABLE
};
enum
{
POINT_ADDED,
POINT_CHANGED,
POINT_INSERTED,
POINT_REMOVED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = {0,};
struct _OsmGpsMapTrackPrivate
{
GSList *track;
gboolean visible;
gfloat linewidth;
gfloat alpha;
GdkRGBA color;
gboolean editable;
};
#define DEFAULT_R (0.6)
#define DEFAULT_G (0)
#define DEFAULT_B (0)
#define DEFAULT_A (0.6)
static void
osm_gps_map_track_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
OsmGpsMapTrackPrivate *priv = OSM_GPS_MAP_TRACK(object)->priv;
switch (property_id)
{
case PROP_VISIBLE:
g_value_set_boolean(value, priv->visible);
break;
case PROP_TRACK:
g_value_set_pointer(value, priv->track);
break;
case PROP_LINE_WIDTH:
g_value_set_float(value, priv->linewidth);
break;
case PROP_ALPHA:
g_value_set_float(value, priv->alpha);
break;
case PROP_COLOR:
g_value_set_boxed(value, &priv->color);
break;
case PROP_EDITABLE:
g_value_set_boolean(value, priv->editable);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
osm_gps_map_track_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
OsmGpsMapTrackPrivate *priv = OSM_GPS_MAP_TRACK(object)->priv;
switch (property_id)
{
case PROP_VISIBLE:
priv->visible = g_value_get_boolean (value);
break;
case PROP_TRACK:
priv->track = g_value_get_pointer (value);
break;
case PROP_LINE_WIDTH:
priv->linewidth = g_value_get_float (value);
break;
case PROP_ALPHA:
priv->alpha = g_value_get_float (value);
break;
case PROP_COLOR: {
GdkRGBA *c = g_value_get_boxed (value);
priv->color.red = c->red;
priv->color.green = c->green;
priv->color.blue = c->blue;
printf("\n%f %f %f\n", c->red, c->green, c->blue);
fflush(stdout);
} break;
case PROP_EDITABLE:
priv->editable = g_value_get_boolean(value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
osm_gps_map_track_dispose (GObject *object)
{
g_return_if_fail (OSM_IS_GPS_MAP_TRACK (object));
OsmGpsMapTrackPrivate *priv = OSM_GPS_MAP_TRACK(object)->priv;
if (priv->track) {
g_slist_foreach(priv->track, (GFunc) g_free, NULL);
g_slist_free(priv->track);
priv->track = NULL;
}
G_OBJECT_CLASS (osm_gps_map_track_parent_class)->dispose (object);
}
static void
osm_gps_map_track_finalize (GObject *object)
{
G_OBJECT_CLASS (osm_gps_map_track_parent_class)->finalize (object);
}
static void
osm_gps_map_track_class_init (OsmGpsMapTrackClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (OsmGpsMapTrackPrivate));
object_class->get_property = osm_gps_map_track_get_property;
object_class->set_property = osm_gps_map_track_set_property;
object_class->dispose = osm_gps_map_track_dispose;
object_class->finalize = osm_gps_map_track_finalize;
g_object_class_install_property (object_class,
PROP_VISIBLE,
g_param_spec_boolean ("visible",
"visible",
"should this track be visible",
TRUE,
G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class,
PROP_TRACK,
g_param_spec_pointer ("track",
"track",
"list of points for the track",
G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_LINE_WIDTH,
g_param_spec_float ("line-width",
"line-width",
"width of the lines drawn for the track",
0.0, /* minimum property value */
100.0, /* maximum property value */
4.0,
G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class,
PROP_ALPHA,
g_param_spec_float ("alpha",
"alpha",
"alpha transparency of the track",
0.0, /* minimum property value */
1.0, /* maximum property value */
DEFAULT_A,
G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
g_object_class_install_property (object_class,
PROP_COLOR,
g_param_spec_boxed ("color",
"color",
"color of the track",
GDK_TYPE_RGBA,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_EDITABLE,
g_param_spec_boolean ("editable",
"editable",
"should this track be editable",
FALSE,
G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
/**
* OsmGpsMapTrack::point-added:
* @self: A #OsmGpsMapTrack
*
* The point-added signal.
*/
signals [POINT_ADDED] = g_signal_new ("point-added",
OSM_TYPE_GPS_MAP_TRACK,
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
g_cclosure_marshal_VOID__BOXED,
G_TYPE_NONE,
1,
OSM_TYPE_GPS_MAP_POINT);
signals [POINT_CHANGED] = g_signal_new ("point-changed",
OSM_TYPE_GPS_MAP_TRACK,
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE,
1,
G_TYPE_INT);
signals [POINT_INSERTED] = g_signal_new ("point-inserted",
OSM_TYPE_GPS_MAP_TRACK,
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE,
1,
G_TYPE_INT);
signals [POINT_REMOVED] = g_signal_new ("point-removed",
OSM_TYPE_GPS_MAP_TRACK,
G_SIGNAL_RUN_FIRST,
0,
NULL,
NULL,
g_cclosure_marshal_VOID__INT,
G_TYPE_NONE,
1,
G_TYPE_INT);
}
static void
osm_gps_map_track_init (OsmGpsMapTrack *self)
{
self->priv = G_TYPE_INSTANCE_GET_PRIVATE((self), OSM_TYPE_GPS_MAP_TRACK, OsmGpsMapTrackPrivate);
self->priv->color.red = DEFAULT_R;
self->priv->color.green = DEFAULT_G;
self->priv->color.blue = DEFAULT_B;
}
void
osm_gps_map_track_add_point (OsmGpsMapTrack *track, const OsmGpsMapPoint *point)
{
g_return_if_fail (OSM_IS_GPS_MAP_TRACK (track));
OsmGpsMapTrackPrivate *priv = track->priv;
OsmGpsMapPoint *p = g_boxed_copy (OSM_TYPE_GPS_MAP_POINT, point);
priv->track = g_slist_append (priv->track, p);
g_signal_emit (track, signals[POINT_ADDED], 0, p);
}
void
osm_gps_map_track_remove_point(OsmGpsMapTrack* track, int pos)
{
OsmGpsMapTrackPrivate *priv = track->priv;
gpointer pgl = g_slist_nth_data(priv->track, pos);
priv->track = g_slist_remove(priv->track, pgl);
g_signal_emit(track, signals[POINT_REMOVED], 0, pos);
}
int osm_gps_map_track_n_points(OsmGpsMapTrack* track)
{
return g_slist_length(track->priv->track);
}
void osm_gps_map_track_insert_point(OsmGpsMapTrack* track, OsmGpsMapPoint* np, int pos)
{
OsmGpsMapTrackPrivate* priv = track->priv;
priv->track = g_slist_insert(priv->track, np, pos);
g_signal_emit(track, signals[POINT_INSERTED], 0, pos);
}
OsmGpsMapPoint* osm_gps_map_track_get_point(OsmGpsMapTrack* track, int pos)
{
OsmGpsMapTrackPrivate* priv = track->priv;
return g_slist_nth_data(priv->track, pos);
}
GSList *
osm_gps_map_track_get_points (OsmGpsMapTrack *track)
{
g_return_val_if_fail (OSM_IS_GPS_MAP_TRACK (track), NULL);
return track->priv->track;
}
void
osm_gps_map_track_set_color (OsmGpsMapTrack *track, GdkRGBA *color)
{
g_return_if_fail (OSM_IS_GPS_MAP_TRACK (track));
track->priv->color.red = color->red;
track->priv->color.green = color->green;
track->priv->color.blue = color->blue;
}
void
osm_gps_map_track_get_color (OsmGpsMapTrack *track, GdkRGBA *color)
{
g_return_if_fail (OSM_IS_GPS_MAP_TRACK (track));
color->red = track->priv->color.red;
color->green = track->priv->color.green;
color->blue = track->priv->color.blue;
}
double
osm_gps_map_track_get_length(OsmGpsMapTrack* track)
{
GSList* points = track->priv->track;
double ret = 0;
OsmGpsMapPoint* point_a = NULL;
OsmGpsMapPoint* point_b = NULL;
while(points)
{
point_a = point_b;
point_b = points->data;
if(point_a)
{
ret += acos(sin(point_a->rlat)*sin(point_b->rlat)
+ cos(point_a->rlat)*cos(point_b->rlat)*cos(point_b->rlon-point_a->rlon)) * 6371109; //the mean raduis of earth
}
points = points->next;
}
return ret;
}
OsmGpsMapTrack *
osm_gps_map_track_new (void)
{
return g_object_new (OSM_TYPE_GPS_MAP_TRACK, NULL);
}
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