/**
* champlain_map_source_factory_create_cached_source:
* @factory: the Factory
* @id: the wanted map source id
*
* Creates a cached map source.
*
* Returns: (transfer none): a ready to use #ChamplainMapSourceChain consisting of
* #ChamplainMemoryCache, #ChamplainFileCache, #ChamplainMapSource matching the given name, and
* an error tile source created with champlain_map_source_factory_create_error_source ().
*
* Since: 0.6
*/
ChamplainMapSource *
champlain_map_source_factory_create_cached_source (ChamplainMapSourceFactory *factory,
const gchar *id)
{
ChamplainMapSourceChain *source_chain;
ChamplainMapSource *tile_source;
ChamplainMapSource *error_source;
ChamplainMapSource *memory_cache;
ChamplainMapSource *file_cache;
guint tile_size;
ChamplainRenderer *renderer;
tile_source = champlain_map_source_factory_create (factory, id);
tile_size = champlain_map_source_get_tile_size (tile_source);
error_source = champlain_map_source_factory_create_error_source (factory, tile_size);
renderer = CHAMPLAIN_RENDERER (champlain_image_renderer_new ());
file_cache = CHAMPLAIN_MAP_SOURCE (champlain_file_cache_new_full (100000000, NULL, renderer));
renderer = CHAMPLAIN_RENDERER (champlain_image_renderer_new ());
memory_cache = CHAMPLAIN_MAP_SOURCE (champlain_memory_cache_new_full (100, renderer));
source_chain = champlain_map_source_chain_new ();
champlain_map_source_chain_push (source_chain, error_source);
champlain_map_source_chain_push (source_chain, tile_source);
champlain_map_source_chain_push (source_chain, file_cache);
champlain_map_source_chain_push (source_chain, memory_cache);
return CHAMPLAIN_MAP_SOURCE (source_chain);
}
static ChamplainMapSource *
champlain_map_source_new_memphis (ChamplainMapSourceDesc *desc)
{
ChamplainMapSource *map_source;
ChamplainRenderer *renderer;
gchar *id, *name, *license, *license_uri;
guint min_zoom, max_zoom, tile_size;
ChamplainMapProjection projection;
g_object_get (G_OBJECT (desc),
"id", &id,
"name", &name,
"license", &license,
"license-uri", &license_uri,
"min-zoom-level", &min_zoom,
"max-zoom-level", &max_zoom,
"tile-size", &tile_size,
"projection", &projection,
NULL);
renderer = CHAMPLAIN_RENDERER (champlain_memphis_renderer_new_full (tile_size));
if (g_strcmp0 (id, CHAMPLAIN_MAP_SOURCE_MEMPHIS_LOCAL) == 0)
{
map_source = CHAMPLAIN_MAP_SOURCE (champlain_file_tile_source_new_full (
id,
name,
license,
license_uri,
min_zoom,
max_zoom,
tile_size,
projection,
renderer));
}
else
{
map_source = CHAMPLAIN_MAP_SOURCE (champlain_network_bbox_tile_source_new_full (
id,
name,
license,
license_uri,
min_zoom,
max_zoom,
tile_size,
projection,
renderer));
}
return map_source;
}
static ChamplainMapSource *
champlain_map_source_new_memphis (ChamplainMapSourceDesc *desc)
{
ChamplainMapSource *map_source;
ChamplainRenderer *renderer;
const gchar *id, *name, *license, *license_uri;
guint min_zoom, max_zoom, tile_size;
ChamplainMapProjection projection;
id = champlain_map_source_desc_get_id (desc);
name = champlain_map_source_desc_get_name (desc);
license = champlain_map_source_desc_get_license (desc);
license_uri = champlain_map_source_desc_get_license_uri (desc);
min_zoom = champlain_map_source_desc_get_min_zoom_level (desc);
max_zoom = champlain_map_source_desc_get_max_zoom_level (desc);
tile_size = champlain_map_source_desc_get_tile_size (desc);
projection = champlain_map_source_desc_get_projection (desc);
renderer = CHAMPLAIN_RENDERER (champlain_memphis_renderer_new_full (tile_size));
if (g_strcmp0 (id, CHAMPLAIN_MAP_SOURCE_MEMPHIS_LOCAL) == 0)
{
map_source = CHAMPLAIN_MAP_SOURCE (champlain_file_tile_source_new_full (
id,
name,
license,
license_uri,
min_zoom,
max_zoom,
tile_size,
projection,
renderer));
}
else
{
map_source = CHAMPLAIN_MAP_SOURCE (champlain_network_bbox_tile_source_new_full (
id,
name,
license,
license_uri,
min_zoom,
max_zoom,
tile_size,
projection,
renderer));
}
return map_source;
}
static ChamplainMapSource *
champlain_map_source_new_generic (ChamplainMapSourceDesc *desc)
{
ChamplainMapSource *map_source;
ChamplainRenderer *renderer;
const gchar *id, *name, *license, *license_uri, *uri_format;
guint min_zoom, max_zoom, tile_size;
ChamplainMapProjection projection;
id = champlain_map_source_desc_get_id (desc);
name = champlain_map_source_desc_get_name (desc);
license = champlain_map_source_desc_get_license (desc);
license_uri = champlain_map_source_desc_get_license_uri (desc);
min_zoom = champlain_map_source_desc_get_min_zoom_level (desc);
max_zoom = champlain_map_source_desc_get_max_zoom_level (desc);
tile_size = champlain_map_source_desc_get_tile_size (desc);
projection = champlain_map_source_desc_get_projection (desc);
uri_format = champlain_map_source_desc_get_uri_format (desc);
renderer = CHAMPLAIN_RENDERER (champlain_image_renderer_new ());
map_source = CHAMPLAIN_MAP_SOURCE (champlain_network_tile_source_new_full (
id,
name,
license,
license_uri,
min_zoom,
max_zoom,
tile_size,
projection,
uri_format,
renderer));
return map_source;
}
static ChamplainMapSource *
champlain_map_source_new_memphis (ChamplainMapSourceDesc *desc,
G_GNUC_UNUSED gpointer user_data)
{
ChamplainMapDataSource *map_data_source;
if (g_strcmp0 (desc->id, CHAMPLAIN_MAP_SOURCE_MEMPHIS_LOCAL) == 0)
{
map_data_source = CHAMPLAIN_MAP_DATA_SOURCE (champlain_local_map_data_source_new ());
/* Abuse the uri_format field to store an initial data path (optional) */
if (desc->uri_format && g_strcmp0 (desc->uri_format, "") != 0)
champlain_local_map_data_source_load_map_data (
CHAMPLAIN_LOCAL_MAP_DATA_SOURCE (map_data_source),
desc->uri_format);
}
else if (g_strcmp0 (desc->id, CHAMPLAIN_MAP_SOURCE_MEMPHIS_NETWORK) == 0)
map_data_source = CHAMPLAIN_MAP_DATA_SOURCE (champlain_network_map_data_source_new ());
else
return NULL;
return CHAMPLAIN_MAP_SOURCE (champlain_memphis_tile_source_new_full (
desc->id,
desc->name,
desc->license,
desc->license_uri,
desc->min_zoom_level,
desc->max_zoom_level,
256,
desc->projection,
map_data_source));
}
/**
* champlain_map_source_chain_pop:
* @source_chain: a #ChamplainMapSourceChain
*
* Pops a map source from the top of the stack from the chain.
*
* Since: 0.6
*/
void
champlain_map_source_chain_pop (ChamplainMapSourceChain *source_chain)
{
ChamplainMapSourceChainPrivate *priv = source_chain->priv;
ChamplainMapSource *old_stack_top = priv->stack_top;
ChamplainMapSource *next_source = champlain_map_source_get_next_source (priv->stack_top);
g_return_if_fail (priv->stack_top);
if (CHAMPLAIN_IS_TILE_CACHE (priv->stack_top))
{
ChamplainTileCache *tile_cache = NULL;
if (CHAMPLAIN_IS_TILE_CACHE (next_source))
tile_cache = CHAMPLAIN_TILE_CACHE (next_source);
/* _push() guarantees that the last source is tile_source so we can be
sure that the next map source is still within the chain */
assign_cache_of_next_source_sequence (source_chain, priv->stack_top, tile_cache);
}
if (next_source == champlain_map_source_get_next_source (CHAMPLAIN_MAP_SOURCE (source_chain)))
{
priv->stack_top = NULL;
priv->stack_bottom = NULL;
}
else
priv->stack_top = next_source;
g_object_unref (old_stack_top);
}
static void
refresh_tile_time (ChamplainTileCache *tile_cache,
ChamplainTile *tile)
{
g_return_if_fail (CHAMPLAIN_IS_MEMORY_CACHE (tile_cache));
ChamplainMapSource *map_source = CHAMPLAIN_MAP_SOURCE (tile_cache);
ChamplainMapSource *next_source = champlain_map_source_get_next_source (map_source);
if (CHAMPLAIN_IS_TILE_CACHE (next_source))
champlain_tile_cache_refresh_tile_time (CHAMPLAIN_TILE_CACHE (next_source), tile);
}
/**
* champlain_map_source_factory_create_error_source:
* @factory: the Factory
* @tile_size: the size of the error tile
*
* Creates a map source generating error tiles.
*
* Returns: (transfer none): a ready to use map source generating error tiles.
*
* Since: 0.8
*/
ChamplainMapSource *
champlain_map_source_factory_create_error_source (ChamplainMapSourceFactory *factory,
guint tile_size)
{
ChamplainMapSource *null_source;
ChamplainRenderer *renderer;
renderer = CHAMPLAIN_RENDERER (champlain_error_tile_renderer_new (tile_size));
null_source = CHAMPLAIN_MAP_SOURCE (champlain_null_tile_source_new_full (renderer));
return null_source;
}
/**
* champlain_map_source_factory_create_cached_source:
* @factory: the Factory
* @id: the wanted map source id
*
* Creates a cached map source.
*
* Returns: a ready to use #ChamplainMapSourceChain consisting of
* #ChamplainFileCache, #ChamplainMapSource matching the given name, and
* #ChamplainErrorTileSource.
*
* Since: 0.6
*/
ChamplainMapSource * champlain_map_source_factory_create_cached_source (ChamplainMapSourceFactory *factory,
const gchar *id)
{
ChamplainMapSourceChain *source_chain;
ChamplainMapSource *tile_source;
ChamplainMapSource *error_source;
ChamplainMapSource *file_cache;
guint tile_size;
tile_source = champlain_map_source_factory_create (factory, id);
tile_size = champlain_map_source_get_tile_size (tile_source);
error_source = CHAMPLAIN_MAP_SOURCE(champlain_error_tile_source_new_full (tile_size));
file_cache = CHAMPLAIN_MAP_SOURCE(champlain_file_cache_new ());
source_chain = champlain_map_source_chain_new ();
champlain_map_source_chain_push (source_chain, error_source);
champlain_map_source_chain_push (source_chain, tile_source);
champlain_map_source_chain_push (source_chain, file_cache);
return CHAMPLAIN_MAP_SOURCE(source_chain);
}
static void
on_set_next_source_cb (ChamplainMapSourceChain *source_chain,
G_GNUC_UNUSED gpointer user_data)
{
g_return_if_fail (source_chain);
ChamplainMapSourceChainPrivate *priv = source_chain->priv;
ChamplainMapSource *map_source = CHAMPLAIN_MAP_SOURCE (source_chain);
ChamplainMapSource *next_source;
next_source = champlain_map_source_get_next_source (map_source);
if (priv->stack_bottom)
champlain_map_source_set_next_source (priv->stack_bottom, next_source);
}
static ChamplainMapSource *
champlain_map_source_new_generic (
ChamplainMapSourceDesc *desc, G_GNUC_UNUSED gpointer user_data)
{
return CHAMPLAIN_MAP_SOURCE (champlain_network_tile_source_new_full (
desc->id,
desc->name,
desc->license,
desc->license_uri,
desc->min_zoom_level,
desc->max_zoom_level,
256,
desc->projection,
desc->uri_format));
}
static gchar *
generate_queue_key (ChamplainMemoryCache *memory_cache,
ChamplainTile *tile)
{
g_return_val_if_fail (CHAMPLAIN_IS_MEMORY_CACHE (memory_cache), NULL);
g_return_val_if_fail (CHAMPLAIN_IS_TILE (tile), NULL);
ChamplainMapSource *map_source = CHAMPLAIN_MAP_SOURCE (memory_cache);
gchar *key;
key = g_strdup_printf ("%d/%d/%d/%s",
champlain_tile_get_zoom_level (tile),
champlain_tile_get_x (tile),
champlain_tile_get_y (tile),
champlain_map_source_get_id (map_source));
return key;
}
static void
store_tile (ChamplainTileCache *tile_cache,
ChamplainTile *tile,
const gchar *contents,
gsize size)
{
g_return_if_fail (CHAMPLAIN_IS_MEMORY_CACHE (tile_cache));
ChamplainMapSource *map_source = CHAMPLAIN_MAP_SOURCE (tile_cache);
ChamplainMapSource *next_source = champlain_map_source_get_next_source (map_source);
ChamplainMemoryCache *memory_cache = CHAMPLAIN_MEMORY_CACHE (tile_cache);
ChamplainMemoryCachePrivate *priv = memory_cache->priv;
GList *link;
gchar *key;
key = generate_queue_key (memory_cache, tile);
link = g_hash_table_lookup (priv->hash_table, key);
if (link)
{
move_queue_member_to_head (priv->queue, link);
g_free (key);
}
else
{
QueueMember *member;
if (priv->queue->length >= priv->size_limit)
{
member = g_queue_pop_tail (priv->queue);
g_hash_table_remove (priv->hash_table, member->key);
delete_queue_member (member, NULL);
}
member = g_slice_new (QueueMember);
member->key = key;
member->data = g_memdup (contents, size);
member->size = size;
g_queue_push_head (priv->queue, member);
g_hash_table_insert (priv->hash_table, g_strdup (key), g_queue_peek_head_link (priv->queue));
}
if (CHAMPLAIN_IS_TILE_CACHE (next_source))
champlain_tile_cache_store_tile (CHAMPLAIN_TILE_CACHE (next_source), tile, contents, size);
}
/**
* champlain_map_source_chain_push:
* @source_chain: a #ChamplainMapSourceChain
* @map_source: the #ChamplainMapSource to be pushed into the chain
*
* Pushes a map source into the chain.
*
* Since: 0.6
*/
void
champlain_map_source_chain_push (ChamplainMapSourceChain *source_chain,
ChamplainMapSource *map_source)
{
ChamplainMapSourceChainPrivate *priv = source_chain->priv;
gboolean is_cache = FALSE;
if (CHAMPLAIN_IS_TILE_CACHE(map_source))
is_cache = TRUE;
else
g_return_if_fail (CHAMPLAIN_IS_TILE_SOURCE(map_source));
g_object_ref_sink (map_source);
if (!priv->stack_top)
{
ChamplainMapSource *chain_next_source = champlain_map_source_get_next_source (CHAMPLAIN_MAP_SOURCE(source_chain));
/* tile source has to be last */
g_return_if_fail (!is_cache);
priv->stack_top = map_source;
priv->stack_bottom = map_source;
if (chain_next_source)
champlain_map_source_set_next_source (priv->stack_bottom, chain_next_source);
}
else
{
if (g_signal_handler_is_connected (priv->stack_top, priv->sig_handler_id))
g_signal_handler_disconnect (priv->stack_top, priv->sig_handler_id);
champlain_map_source_set_next_source (map_source, priv->stack_top);
priv->stack_top = map_source;
if (is_cache)
{
ChamplainTileCache *tile_cache = CHAMPLAIN_TILE_CACHE(map_source);
assign_cache_of_next_source_sequence (source_chain, priv->stack_top, tile_cache);
}
}
priv->sig_handler_id = g_signal_connect (priv->stack_top, "reload-tiles",
G_CALLBACK (reload_tiles_cb), source_chain);
}
static void
assign_cache_of_next_source_sequence (ChamplainMapSourceChain *source_chain,
ChamplainMapSource *start_map_source,
ChamplainTileCache *tile_cache)
{
ChamplainMapSource *map_source = start_map_source;
ChamplainMapSource *chain_next_source = champlain_map_source_get_next_source (CHAMPLAIN_MAP_SOURCE (source_chain));
do
{
map_source = champlain_map_source_get_next_source (map_source);
}
while (CHAMPLAIN_IS_TILE_CACHE (map_source));
while (CHAMPLAIN_IS_TILE_SOURCE (map_source) && map_source != chain_next_source)
{
champlain_tile_source_set_cache (CHAMPLAIN_TILE_SOURCE (map_source), tile_cache);
map_source = champlain_map_source_get_next_source (map_source);
}
}
/**
* champlain_file_tile_source_load_map_data:
* @self: a #ChamplainFileTileSource
* @map_path: a path to a map data file
*
* Loads the OpenStreetMap XML file at the given path.
*
* Since: 0.8
*/
void
champlain_file_tile_source_load_map_data (ChamplainFileTileSource *self,
const gchar *map_path)
{
g_return_if_fail (CHAMPLAIN_IS_FILE_TILE_SOURCE (self));
ChamplainRenderer *renderer;
gchar *data;
gsize length;
if (!g_file_get_contents (map_path, &data, &length, NULL))
{
g_critical ("Error: \"%s\" cannot be read.", map_path);
return;
}
renderer = champlain_map_source_get_renderer (CHAMPLAIN_MAP_SOURCE (self));
champlain_renderer_set_data (renderer, (guint8*) data, length);
g_free (data);
}
static void
champlain_map_source_dispose (GObject *object)
{
ChamplainMapSourcePrivate *priv = CHAMPLAIN_MAP_SOURCE (object)->priv;
if (priv->next_source)
{
g_object_unref (priv->next_source);
priv->next_source = NULL;
}
if (priv->renderer)
{
g_object_unref (priv->renderer);
priv->renderer = NULL;
}
G_OBJECT_CLASS (champlain_map_source_parent_class)->dispose (object);
}
/**
* champlain_map_source_chain_pop:
* @source_chain: a #ChamplainMapSourceChain
*
* Pops the map source from the top of the stack from the chain.
*
* Since: 0.6
*/
void
champlain_map_source_chain_pop (ChamplainMapSourceChain *source_chain)
{
ChamplainMapSourceChainPrivate *priv = source_chain->priv;
ChamplainMapSource *old_stack_top = priv->stack_top;
ChamplainMapSource *next_source = champlain_map_source_get_next_source (priv->stack_top);
g_return_if_fail (priv->stack_top);
if (g_signal_handler_is_connected (priv->stack_top, priv->sig_handler_id))
g_signal_handler_disconnect (priv->stack_top, priv->sig_handler_id);
if (CHAMPLAIN_IS_TILE_CACHE(priv->stack_top))
{
ChamplainTileCache *tile_cache = NULL;
if (CHAMPLAIN_IS_TILE_CACHE(next_source))
tile_cache = CHAMPLAIN_TILE_CACHE(next_source);
/* _push() guarantees that the last source is tile_source so we can be
sure that the next map source is still within the chain */
assign_cache_of_next_source_sequence (source_chain, priv->stack_top, tile_cache);
}
if (next_source == champlain_map_source_get_next_source (CHAMPLAIN_MAP_SOURCE(source_chain)))
{
priv->stack_top = NULL;
priv->stack_bottom = NULL;
}
else
priv->stack_top = next_source;
if (priv->stack_top)
{
priv->sig_handler_id = g_signal_connect (priv->stack_top, "reload-tiles",
G_CALLBACK (reload_tiles_cb), source_chain);
}
g_object_unref (old_stack_top);
}
static void
champlain_map_source_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ChamplainMapSourcePrivate *priv = CHAMPLAIN_MAP_SOURCE (object)->priv;
switch (prop_id)
{
case PROP_NEXT_SOURCE:
g_value_set_object (value, priv->next_source);
break;
case PROP_RENDERER:
g_value_set_object (value, priv->renderer);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
/**
* champlain_map_source_chain_push:
* @source_chain: a #ChamplainMapSourceChain
* @map_source: the #ChamplainMapSource to be pushed into the chain
*
* Pushes a map source into the chain.
*
* Since: 0.6
*/
void
champlain_map_source_chain_push (ChamplainMapSourceChain *source_chain,
ChamplainMapSource *map_source)
{
ChamplainMapSourceChainPrivate *priv = source_chain->priv;
gboolean is_cache = FALSE;
if (CHAMPLAIN_IS_TILE_CACHE (map_source))
is_cache = TRUE;
else
g_return_if_fail (CHAMPLAIN_IS_TILE_SOURCE (map_source));
g_object_ref_sink (map_source);
if (!priv->stack_top)
{
ChamplainMapSource *chain_next_source = champlain_map_source_get_next_source (CHAMPLAIN_MAP_SOURCE (source_chain));
/* tile source has to be last */
g_return_if_fail (!is_cache);
priv->stack_top = map_source;
priv->stack_bottom = map_source;
if (chain_next_source)
champlain_map_source_set_next_source (priv->stack_bottom, chain_next_source);
}
else
{
champlain_map_source_set_next_source (map_source, priv->stack_top);
priv->stack_top = map_source;
if (is_cache)
{
ChamplainTileCache *tile_cache = CHAMPLAIN_TILE_CACHE (map_source);
assign_cache_of_next_source_sequence (source_chain, priv->stack_top, tile_cache);
}
}
}
static void
on_tile_filled (ChamplainTileCache *tile_cache,
ChamplainTile *tile)
{
g_return_if_fail (CHAMPLAIN_IS_MEMORY_CACHE (tile_cache));
g_return_if_fail (CHAMPLAIN_IS_TILE (tile));
ChamplainMapSource *map_source = CHAMPLAIN_MAP_SOURCE (tile_cache);
ChamplainMapSource *next_source = champlain_map_source_get_next_source (map_source);
ChamplainMemoryCache *memory_cache = CHAMPLAIN_MEMORY_CACHE (tile_cache);
ChamplainMemoryCachePrivate *priv = memory_cache->priv;
GList *link;
gchar *key;
key = generate_queue_key (memory_cache, tile);
link = g_hash_table_lookup (priv->hash_table, key);
g_free (key);
if (link)
move_queue_member_to_head (priv->queue, link);
if (CHAMPLAIN_IS_TILE_CACHE (next_source))
champlain_tile_cache_on_tile_filled (CHAMPLAIN_TILE_CACHE (next_source), tile);
}
static ChamplainMapSource *
champlain_map_source_new_generic (ChamplainMapSourceDesc *desc)
{
ChamplainMapSource *map_source;
ChamplainRenderer *renderer;
gchar *id, *name, *license, *license_uri, *uri_format;
guint min_zoom, max_zoom, tile_size;
ChamplainMapProjection projection;
g_object_get (G_OBJECT (desc),
"id", &id,
"name", &name,
"license", &license,
"license-uri", &license_uri,
"min-zoom-level", &min_zoom,
"max-zoom-level", &max_zoom,
"tile-size", &tile_size,
"projection", &projection,
"uri-format", &uri_format,
NULL);
renderer = CHAMPLAIN_RENDERER (champlain_image_renderer_new ());
map_source = CHAMPLAIN_MAP_SOURCE (champlain_network_tile_source_new_full (
id,
name,
license,
license_uri,
min_zoom,
max_zoom,
tile_size,
projection,
uri_format,
renderer));
return map_source;
}
static void
champlain_map_source_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ChamplainMapSource *map_source = CHAMPLAIN_MAP_SOURCE (object);
switch (prop_id)
{
case PROP_NEXT_SOURCE:
champlain_map_source_set_next_source (map_source,
g_value_get_object (value));
break;
case PROP_RENDERER:
champlain_map_source_set_renderer (map_source,
g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
