C++ (Cpp) champlain_map_source_get_max_zoom_levelの例

コード例 #1

ファイル: window.c プロジェクト: deejay1/emerillon

static void
zoom_changed_cb (GtkWidget *widget,
                 GParamSpec *pspec,
                 EmerillonWindow *self)
{
  GtkAction *zoom_in_action;
  GtkAction *zoom_out_action;
  gint zoom_level;
  guint min_zoom_level = 0;
  guint max_zoom_level = 18;
  ChamplainMapSource *source = NULL;

  source = champlain_view_get_map_source (self->priv->view);
  min_zoom_level = champlain_map_source_get_min_zoom_level (source);
  max_zoom_level = champlain_map_source_get_max_zoom_level (source);

  zoom_in_action = gtk_action_group_get_action (self->priv->main_actions,
        "ViewZoomIn");
  zoom_out_action = gtk_action_group_get_action (self->priv->main_actions,
        "ViewZoomOut");

  g_object_get (self->priv->view, "zoom-level", &zoom_level, NULL);

  gtk_action_set_sensitive (zoom_in_action, zoom_level < max_zoom_level);
  gtk_action_set_sensitive (zoom_out_action, zoom_level > min_zoom_level);
}

コード例 #2

ファイル: champlain-map-source-chain.c プロジェクト: jozef/champlain

static guint
get_max_zoom_level (ChamplainMapSource *map_source)
{
  ChamplainMapSourceChain *source_chain = CHAMPLAIN_MAP_SOURCE_CHAIN (map_source);
  g_return_val_if_fail (source_chain, 0);

  ChamplainMapSourceChainPrivate *priv = source_chain->priv;
  g_return_val_if_fail (priv->stack_top, 0);

  return champlain_map_source_get_max_zoom_level (priv->stack_top);
}

コード例 #3

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

static guint
get_max_zoom_level (ChamplainMapSource *map_source)
{
  g_return_val_if_fail (CHAMPLAIN_IS_TILE_CACHE (map_source), 0);

  ChamplainMapSource *next_source = champlain_map_source_get_next_source (map_source);

  g_return_val_if_fail (CHAMPLAIN_IS_MAP_SOURCE (next_source), 0);

  return champlain_map_source_get_max_zoom_level (next_source);
}