/**
* Get the current position of a layer in the layer list.
*
* @param[in] [1]
* The name of the layer.
* @param[in] WINDOW @opt
* The name of the window. Defaults to the active window.
* @return The 0 based position of the layer in the layer list.
* @usage idx = get_layer_position("data.tif")
* @endusage
*/
IDL_VPTR get_layer_position(int argc, IDL_VPTR pArgv[], char* pArgk)
{
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 name;
int index = -1;
if (kw->windowExists)
{
windowName = IDL_STRING_STR(&kw->windowName);
}
if (argc < 1)
{
IDL_Message(IDL_M_GENERIC, IDL_MSG_RET, "get_layer_position takes a layer name as a parameter with a "
"window as an optional keyword to specify a non current window.");
}
else
{
//layer name passed in as a parameter
name = IDL_VarGetString(pArgv[0]);
SpatialDataView* pView = dynamic_cast<SpatialDataView*>(IdlFunctions::getViewByWindowName(windowName));
if (pView != NULL)
{
Layer* pLayer = IdlFunctions::getLayerByName(windowName, name, false);
if (pLayer != NULL)
{
index = pView->getLayerDisplayIndex(pLayer);
}
}
}
return IDL_GettmpInt(index);
}
uint32_t getLayerDisplayIndex(Layer* pLayer)
{
if (pLayer == NULL)
{
setLastError(SIMPLE_BAD_PARAMS);
return 0;
}
SpatialDataView* pView = dynamic_cast<SpatialDataView*>(pLayer->getView());
if (pView == NULL)
{
setLastError(SIMPLE_WRONG_VIEW_TYPE);
return 0;
}
setLastError(SIMPLE_NO_ERROR);
return pView->getLayerDisplayIndex(pLayer);
}