/**
 * Show a hidden layer.
 *
 * @param[in] [1]
 *            The name of the layer to show.
 * @param[in] WINDOW @opt
 *            The name of the window. Defaults to the active window.
 * @rsof
 * @usage print,show_layer("raster.tif")
 * @endusage
 */
IDL_VPTR show_layer(int argc, IDL_VPTR pArgv[], char* pArgk)
{
   IDL_VPTR idlPtr;
   typedef struct
   {
      IDL_KW_RESULT_FIRST_FIELD;
      int windowExists;
      IDL_STRING windowName;
   } KW_RESULT;

   //IDL_KW_FAST_SCAN is the type of scan we are using, following it is the
   //name of the keyword, followed by the type, the mask(which should be 1),
   //flags, a boolean whether the value was populated and finally the value itself
   static IDL_KW_PAR kw_pars[] = {
      IDL_KW_FAST_SCAN,
      {"WINDOW", IDL_TYP_STRING, 1, 0, reinterpret_cast<int*>(IDL_KW_OFFSETOF(windowExists)),
         reinterpret_cast<char*>(IDL_KW_OFFSETOF(windowName))},
      {NULL}
   };

   IdlFunctions::IdlKwResource<KW_RESULT> kw(argc, pArgv, pArgk, kw_pars, 0, 1);

   std::string windowName;
   std::string layerName;

   if (kw->windowExists)
   {
      windowName = IDL_STRING_STR(&kw->windowName);
   }
   bool bSuccess = false;
   if (argc < 1)
   {
      IDL_Message(IDL_M_GENERIC, IDL_MSG_RET, "function takes a layer name as a parameter with "
         "'window' as an optional keyword.");
      return IDL_StrToSTRING("failure");
   }
   //the layer name as a parameter
   layerName = IDL_VarGetString(pArgv[0]);
   SpatialDataView* pView = dynamic_cast<SpatialDataView*>(IdlFunctions::getViewByWindowName(windowName));
   if (pView != NULL)
   {
      Layer* pLayer = IdlFunctions::getLayerByName(windowName, layerName, false);
      if (pLayer != NULL)
      {
         pView->showLayer(pLayer);
         bSuccess = true;
      }
   }
   if (bSuccess)
   {
      idlPtr = IDL_StrToSTRING("success");
   }
   else
   {
      idlPtr = IDL_StrToSTRING("failure");
   }
   return idlPtr;
}
Esempio n. 2
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 int setLayerDisplayed(Layer* pLayer, int displayed)
 {
    if (pLayer == NULL)
    {
       setLastError(SIMPLE_BAD_PARAMS);
       return 1;
    }
    SpatialDataView* pView = dynamic_cast<SpatialDataView*>(pLayer->getView());
    if (pView == NULL)
    {
       setLastError(SIMPLE_WRONG_VIEW_TYPE);
       return 1;
    }
    bool success = true;
    if (displayed != 0)
    {
       if (!pView->isLayerDisplayed(pLayer))
       {
          success = pView->showLayer(pLayer);
       }
    }
    else
    {
       if (pView->isLayerDisplayed(pLayer))
       {
          success = pView->hideLayer(pLayer);
       }
    }
    if (!success)
    {
       setLastError(SIMPLE_OTHER_FAILURE);
       return 1;
    }
    setLastError(SIMPLE_NO_ERROR);
    return 0;
 }