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gps.c: Use only one instance of the map object and window

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Both show_gps_locations() and show_gps_location() have
static local variables 'map' (OSM_TYPE_GPS_MAP) and 'window',
so technically both would create their own instances of these
objects.

This patch promotes the two variables to global, so that only
one instance per type ever exists.

A memory leak that is addressed is at the flag pixbuf
allocation, which has to be freed right after the image
is added to the map:
picture = gdk_pixbuf_from_pixdata(&flag_pixbuf, TRUE, NULL);
...
gdk_pixbuf_unref(picture);

There is also a heap-lifespan memory leak at:
map = g_object_new(OSM_TYPE_GPS_MAP,...
but GLib isn't exacly happy about us unrefing it right before
exiting the GTK main loop, so no fix is provided for that
unfortunately.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Lubomir I. Ivanov 2013-02-09 21:30:00 +02:00 committed by Dirk Hohndel
parent ea21126f62
commit 801b0832ae
1 changed files with 4 additions and 4 deletions
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8
gps.c
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@ -14,6 +14,9 @@
#include <gdk-pixbuf/gdk-pixdata.h>
#include "flag.h"
static GtkWidget *window = NULL;
static OsmGpsMap *map = NULL;
/* Several map providers are available, such as OSM_GPS_MAP_SOURCE_OPENSTREETMAP
and OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_SATELLITE. We should make more of
them available from e.g. a pull-down menu */
@ -209,8 +212,6 @@ void show_map(OsmGpsMap *map, GtkWidget **window, struct dive *dive, void (*call
void show_gps_location(struct dive *dive, void (*callback)(float, float))
{
static GtkWidget *window = NULL;
static OsmGpsMap *map = NULL;
GdkPixbuf *picture;
GError *gerror = NULL;
@ -225,6 +226,7 @@ void show_gps_location(struct dive *dive, void (*callback)(float, float))
picture = gdk_pixbuf_from_pixdata(&flag_pixbuf, TRUE, NULL);
if (picture) {
osm_gps_map_image_add_with_alignment(map, lat, lng, picture, 0, 1);
gdk_pixbuf_unref(picture);
} else {
printf("error message: %s\n", gerror->message);
}
@ -236,8 +238,6 @@ void show_gps_location(struct dive *dive, void (*callback)(float, float))
void show_gps_locations()
{
static OsmGpsMap *map = NULL;
static GtkWidget *window = NULL;
struct dive *dive;
int idx;