C++ (Cpp) champlain_map_source_get_rendererの例

コード例 #1

ファイル: champlain-memory-cache.c プロジェクト: PabloCastellano/libchamplain

static void
fill_tile (ChamplainMapSource *map_source,
    ChamplainTile *tile)
{
  g_return_if_fail (CHAMPLAIN_IS_MEMORY_CACHE (map_source));
  g_return_if_fail (CHAMPLAIN_IS_TILE (tile));

  ChamplainMapSource *next_source = champlain_map_source_get_next_source (map_source);

  if (champlain_tile_get_state (tile) == CHAMPLAIN_STATE_DONE)
    return;

  if (champlain_tile_get_state (tile) != CHAMPLAIN_STATE_LOADED)
    {
      ChamplainMemoryCache *memory_cache = CHAMPLAIN_MEMORY_CACHE (map_source);
      ChamplainMemoryCachePrivate *priv = memory_cache->priv;
      ChamplainRenderer *renderer;
      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)
        {
          QueueMember *member = link->data;

          move_queue_member_to_head (priv->queue, link);

          renderer = champlain_map_source_get_renderer (map_source);

          g_return_if_fail (CHAMPLAIN_IS_RENDERER (renderer));

          g_object_ref (map_source);
          g_object_ref (tile);

          g_signal_connect (tile, "render-complete", G_CALLBACK (tile_rendered_cb), map_source);

          champlain_renderer_set_data (renderer, member->data, member->size);
          champlain_renderer_render (renderer, tile);

          return;
        }
    }

  if (CHAMPLAIN_IS_MAP_SOURCE (next_source))
    champlain_map_source_fill_tile (next_source, tile);
  else if (champlain_tile_get_state (tile) == CHAMPLAIN_STATE_LOADED)
    {
      /* if we have some content, use the tile even if it wasn't validated */
      champlain_tile_set_state (tile, CHAMPLAIN_STATE_DONE);
      champlain_tile_display_content (tile);
    }
}

コード例 #2

ファイル: champlain-file-tile-source.c プロジェクト: GNOME/libchamplain

/**
 * 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);
}

コード例 #3

ファイル: champlain-file-tile-source.c プロジェクト: GNOME/libchamplain

static void
fill_tile (ChamplainMapSource *map_source,
    ChamplainTile *tile)
{
  g_return_if_fail (CHAMPLAIN_IS_FILE_TILE_SOURCE (map_source));
  g_return_if_fail (CHAMPLAIN_IS_TILE (tile));

  ChamplainMapSource *next_source = champlain_map_source_get_next_source (map_source);

  if (champlain_tile_get_state (tile) == CHAMPLAIN_STATE_DONE)
    return;

  if (champlain_tile_get_state (tile) != CHAMPLAIN_STATE_LOADED)
    {
      ChamplainRenderer *renderer;

      renderer = champlain_map_source_get_renderer (map_source);

      g_return_if_fail (CHAMPLAIN_IS_RENDERER (renderer));

      g_object_ref (map_source);
      g_object_ref (tile);

      g_signal_connect (tile, "render-complete", G_CALLBACK (tile_rendered_cb), map_source);

      champlain_renderer_render (renderer, tile);
    }
  else if (CHAMPLAIN_IS_MAP_SOURCE (next_source))
    champlain_map_source_fill_tile (next_source, tile);
  else if (champlain_tile_get_state (tile) == CHAMPLAIN_STATE_LOADED)
    {
      /* if we have some content, use the tile even if it wasn't validated */
      champlain_tile_set_state (tile, CHAMPLAIN_STATE_DONE);
      champlain_tile_display_content (tile);
    }
}