* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+/**
+ * SECTION:map
+ * @short_description: Map plugin
+ *
+ * #GisPluginMap provides map overlays. Much of this data is obtained from the
+ * OpenStreetMap project.
+ */
+
#include <time.h>
+#include <stdlib.h>
#include <glib/gstdio.h>
#include <GL/gl.h>
#define TILE_WIDTH 1024
#define TILE_HEIGHT 512
-const guchar colormap[][2][4] = {
+static const guchar colormap[][2][4] = {
{{0x73, 0x91, 0xad}, {0x73, 0x91, 0xad, 0x20}}, // Oceans
{{0xf6, 0xee, 0xee}, {0xf6, 0xee, 0xee, 0x00}}, // Ground
{{0xff, 0xff, 0xff}, {0xff, 0xff, 0xff, 0xff}}, // Borders
};
struct _LoadTileData {
- GisPluginMap *self;
+ GisPluginMap *map;
GisTile *tile;
- GdkPixbuf *pixbuf;
+ gchar *path;
};
-#include <stdlib.h>
static gboolean _load_tile_cb(gpointer _data)
{
struct _LoadTileData *data = _data;
- GisPluginMap *self = data->self;
- GisTile *tile = data->tile;
- GdkPixbuf *pixbuf = data->pixbuf;
+ GisPluginMap *map = data->map;
+ GisTile *tile = data->tile;
+ gchar *path = data->path;
g_free(data);
- /* Create Texture */
+ /* Load pixbuf */
g_debug("GisPluginMap: _load_tile_cb start");
+ GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(path, NULL);
+ if (!pixbuf) {
+ g_warning("GisPluginMap: _load_tile - Error loading pixbuf %s", path);
+ g_remove(path);
+ g_free(path);
+ return FALSE;
+ }
+ g_free(path);
+
+ /* Create Texture */
guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
gboolean alpha = gdk_pixbuf_get_has_alpha(pixbuf);
gint width = gdk_pixbuf_get_width(pixbuf);
}
guint *tex = g_new0(guint, 1);
- gis_viewer_begin(self->viewer);
glGenTextures(1, tex);
glBindTexture(GL_TEXTURE_2D, *tex);
(alpha ? GL_RGBA : GL_RGB), GL_UNSIGNED_BYTE, pixels);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glFlush();
- gis_viewer_end(self->viewer);
tile->data = tex;
- gtk_widget_queue_draw(GTK_WIDGET(self->viewer));
+ gtk_widget_queue_draw(GTK_WIDGET(map->viewer));
g_object_unref(pixbuf);
return FALSE;
}
-static void _load_tile(GisTile *tile, gpointer _self)
+static void _load_tile(GisTile *tile, gpointer _map)
{
- GisPluginMap *self = _self;
+ GisPluginMap *map = _map;
g_debug("GisPluginMap: _load_tile start %p", g_thread_self());
- char *path = gis_wms_fetch(self->wms, tile, GIS_ONCE, NULL, NULL);
struct _LoadTileData *data = g_new0(struct _LoadTileData, 1);
- data->self = self;
- data->tile = tile;
- data->pixbuf = gdk_pixbuf_new_from_file(path, NULL);
- if (data->pixbuf) {
- g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
- } else {
- g_warning("GisPluginMap: _load_tile - Error loading pixbuf %s", path);
- g_remove(path);
- }
- g_free(path);
+ data->map = map;
+ data->tile = tile;
+ data->path = gis_wms_fetch(map->wms, tile, GIS_ONCE, NULL, NULL);
+ g_idle_add_full(G_PRIORITY_LOW, _load_tile_cb, data, NULL);
g_debug("GisPluginMap: _load_tile end %p", g_thread_self());
}
g_free(data);
return FALSE;
}
-static void _free_tile(GisTile *tile, gpointer _self)
+static void _free_tile(GisTile *tile, gpointer _map)
{
- GisPluginMap *self = _self;
- g_debug("GisPluginMap: _free_tile: %p=%d", tile->data, *(guint*)tile->data);
- g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
+ g_debug("GisPluginMap: _free_tile: %p", tile->data);
+ if (tile->data)
+ g_idle_add_full(G_PRIORITY_LOW, _free_tile_cb, tile->data, NULL);
}
-static gpointer _update_tiles(gpointer _self)
+static gpointer _update_tiles(gpointer _map)
{
g_debug("GisPluginMap: _update_tiles");
- GisPluginMap *self = _self;
- g_mutex_lock(self->mutex);
- gdouble lat, lon, elev;
- gis_viewer_get_location(self->viewer, &lat, &lon, &elev);
- gis_tile_update(self->tiles,
+ GisPluginMap *map = _map;
+ if (!g_mutex_trylock(map->mutex))
+ return NULL;
+ GisPoint eye;
+ gis_viewer_get_location(map->viewer, &eye.lat, &eye.lon, &eye.elev);
+ gis_tile_update(map->tiles, &eye,
MAX_RESOLUTION, TILE_WIDTH, TILE_WIDTH,
- lat, lon, elev,
- _load_tile, self);
- gis_tile_gc(self->tiles, time(NULL)-10,
- _free_tile, self);
- g_mutex_unlock(self->mutex);
+ _load_tile, map);
+ gis_tile_gc(map->tiles, time(NULL)-10,
+ _free_tile, map);
+ g_mutex_unlock(map->mutex);
return NULL;
}
* Callbacks *
*************/
static void _on_location_changed(GisViewer *viewer,
- gdouble lat, gdouble lon, gdouble elev, GisPluginMap *self)
+ gdouble lat, gdouble lon, gdouble elev, GisPluginMap *map)
{
- g_thread_create(_update_tiles, self, FALSE, NULL);
+ g_thread_create(_update_tiles, map, FALSE, NULL);
+}
+
+static gpointer _threaded_init(GisPluginMap *map)
+{
+ _load_tile(map->tiles, map);
+ _update_tiles(map);
+ return NULL;
}
/***********
* Methods *
***********/
+/**
+ * gis_plugin_map_new:
+ * @viewer: the #GisViewer to use for drawing
+ *
+ * Create a new instance of the map plugin.
+ *
+ * Returns: the new #GisPluginMap
+ */
GisPluginMap *gis_plugin_map_new(GisViewer *viewer)
{
g_debug("GisPluginMap: new");
- GisPluginMap *self = g_object_new(GIS_TYPE_PLUGIN_MAP, NULL);
- self->viewer = g_object_ref(viewer);
+ GisPluginMap *map = g_object_new(GIS_TYPE_PLUGIN_MAP, NULL);
+ map->viewer = g_object_ref(viewer);
/* Load initial tiles */
- _load_tile(self->tiles, self);
- g_thread_create(_update_tiles, self, FALSE, NULL);
+ g_thread_create((GThreadFunc)_threaded_init, map, FALSE, NULL);
/* Connect signals */
- self->sigid = g_signal_connect(self->viewer, "location-changed",
- G_CALLBACK(_on_location_changed), self);
+ map->sigid = g_signal_connect(map->viewer, "location-changed",
+ G_CALLBACK(_on_location_changed), map);
/* Add renderers */
- gis_viewer_add(viewer, GIS_OBJECT(self->tiles), GIS_LEVEL_OVERLAY, 0);
+ gis_viewer_add(viewer, GIS_OBJECT(map->tiles), GIS_LEVEL_OVERLAY-1, 0);
- return self;
+ return map;
}
/* Add methods to the interface */
}
/* Class/Object init */
-static void gis_plugin_map_init(GisPluginMap *self)
+static void gis_plugin_map_init(GisPluginMap *map)
{
g_debug("GisPluginMap: init");
/* Set defaults */
- self->mutex = g_mutex_new();
- self->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
- self->wms = gis_wms_new(
+ map->mutex = g_mutex_new();
+ map->tiles = gis_tile_new(NULL, NORTH, SOUTH, EAST, WEST);
+ map->wms = gis_wms_new(
"http://labs.metacarta.com/wms/vmap0", "basic", "image/png",
"osm/", "png", TILE_WIDTH, TILE_HEIGHT);
}
static void gis_plugin_map_dispose(GObject *gobject)
{
g_debug("GisPluginMap: dispose");
- GisPluginMap *self = GIS_PLUGIN_MAP(gobject);
+ GisPluginMap *map = GIS_PLUGIN_MAP(gobject);
/* Drop references */
- if (self->viewer) {
- g_signal_handler_disconnect(self->viewer, self->sigid);
- g_object_unref(self->viewer);
- self->viewer = NULL;
+ if (map->viewer) {
+ g_signal_handler_disconnect(map->viewer, map->sigid);
+ g_object_unref(map->viewer);
+ map->viewer = NULL;
}
G_OBJECT_CLASS(gis_plugin_map_parent_class)->dispose(gobject);
}
static void gis_plugin_map_finalize(GObject *gobject)
{
g_debug("GisPluginMap: finalize");
- GisPluginMap *self = GIS_PLUGIN_MAP(gobject);
+ GisPluginMap *map = GIS_PLUGIN_MAP(gobject);
/* Free data */
- gis_tile_free(self->tiles, _free_tile, self);
- gis_wms_free(self->wms);
- g_mutex_free(self->mutex);
+ gis_tile_free(map->tiles, _free_tile, map);
+ gis_wms_free(map->wms);
+ g_mutex_free(map->mutex);
G_OBJECT_CLASS(gis_plugin_map_parent_class)->finalize(gobject);
}
projects / grits / blobdiff