C++ (Cpp) CSG_Tool::On_Before_Execution примеры использования

Пример #1

//---------------------------------------------------------
bool CWKSP_Map_Graticule::Get_Graticule(const CSG_Rect &Extent)
{
	bool	bResult	= false;

	m_Graticule  .Create(SHAPE_TYPE_Line );
	m_Coordinates.Create(SHAPE_TYPE_Point);

	CSG_Tool	*pTool	= SG_Get_Tool_Library_Manager().Get_Tool("pj_proj4", 14);

	if(	pTool && Get_Map()->Get_Projection().is_Okay() )
	{
		SG_UI_Msg_Lock     (true);
		SG_UI_Progress_Lock(true);

		pTool->Settings_Push();

		if( pTool->Set_Parameter("XMIN"      , Extent.Get_XMin())
		&&  pTool->Set_Parameter("XMAX"      , Extent.Get_XMax())
		&&  pTool->Set_Parameter("YMIN"      , Extent.Get_YMin())
		&&  pTool->Set_Parameter("YMAX"      , Extent.Get_YMax())
		&&  pTool->Set_Parameter("INTERVAL"  , m_Parameters("INTERVAL"))
		&&  pTool->Set_Parameter("FIXED"     , m_Parameters("FIXED"))
		&&  pTool->Set_Parameter("FITTED"    , m_Parameters("FITTED"))
		&&  pTool->Set_Parameter("RESOLUTION", m_Parameters("RESOLUTION"))
		&&  pTool->Set_Parameter("GRATICULE" , &m_Graticule)
		&&  pTool->Set_Parameter("COORDS"    , &m_Coordinates)
		&&  pTool->Set_Parameter("CRS_PROJ4" , Get_Map()->Get_Projection().Get_Proj4())
		&&  pTool->On_Before_Execution() && pTool->Execute() )
		{
			bResult	= true;
		}

		pTool->Settings_Pop();

		SG_UI_Msg_Lock     (false);
		SG_UI_Progress_Lock(false);
	}

	return( bResult );
}

Пример #2

//---------------------------------------------------------
bool CSG_Shapes::Create(const CSG_String &File_Name)
{
	Destroy();

	SG_UI_Msg_Add(CSG_String::Format("%s: %s...", _TL("Load shapes"), File_Name.c_str()), true);

	//-----------------------------------------------------
	bool	bResult	= File_Name.BeforeFirst(':').Cmp("PGSQL") && SG_File_Exists(File_Name) && _Load_ESRI(File_Name);

	if( bResult )
	{
		Set_File_Name(File_Name, true);
	}

	//-----------------------------------------------------
	else if( File_Name.BeforeFirst(':').Cmp("PGSQL") == 0 )	// database source
	{
		CSG_String	s(File_Name);

		s	= s.AfterFirst(':');	CSG_String	Host  (s.BeforeFirst(':'));
		s	= s.AfterFirst(':');	CSG_String	Port  (s.BeforeFirst(':'));
		s	= s.AfterFirst(':');	CSG_String	DBName(s.BeforeFirst(':'));
		s	= s.AfterFirst(':');	CSG_String	Table (s.BeforeFirst(':'));

		CSG_Tool	*pTool	= SG_Get_Tool_Library_Manager().Get_Tool("db_pgsql", 0);	// CGet_Connections

		if(	pTool != NULL )
		{
			SG_UI_ProgressAndMsg_Lock(true);

			//---------------------------------------------
			CSG_Table	Connections;
			CSG_String	Connection	= DBName + " [" + Host + ":" + Port + "]";

			pTool->Settings_Push();

			if( pTool->On_Before_Execution() && SG_TOOL_PARAMETER_SET("CONNECTIONS", &Connections) && pTool->Execute() )	// CGet_Connections
			{
				for(int i=0; !bResult && i<Connections.Get_Count(); i++)
				{
					if( !Connection.Cmp(Connections[i].asString(0)) )
					{
						bResult	= true;
					}
				}
			}

			pTool->Settings_Pop();

			//---------------------------------------------
			if( bResult && (bResult = (pTool = SG_Get_Tool_Library_Manager().Get_Tool("db_pgsql", 20)) != NULL) == true )	// CPGIS_Shapes_Load
			{
				pTool->Settings_Push();

				bResult	= pTool->On_Before_Execution()
					&& SG_TOOL_PARAMETER_SET("CONNECTION", Connection)
					&& SG_TOOL_PARAMETER_SET("TABLES"    , Table)
					&& SG_TOOL_PARAMETER_SET("SHAPES"    , this)
					&& pTool->Execute();

				pTool->Settings_Pop();
			}

			SG_UI_ProgressAndMsg_Lock(false);
		}
	}

	//-----------------------------------------------------
	if( bResult )
	{
		Set_Modified(false);
		Set_Update_Flag();

		SG_UI_Process_Set_Ready();
		SG_UI_Msg_Add(_TL("okay"), false, SG_UI_MSG_STYLE_SUCCESS);

		return( true );
	}

	for(int iShape=Get_Count()-1; iShape>=0; iShape--)	// be kind, keep at least those shapes that have been loaded successfully
	{
		if( !Get_Shape(iShape)->is_Valid() )
		{
			Del_Shape(iShape);
		}
	}

	if( Get_Count() <= 0 )
	{
		Destroy();
	}

	SG_UI_Process_Set_Ready();
	SG_UI_Msg_Add(_TL("failed"), false, SG_UI_MSG_STYLE_FAILURE);

	return( false );
}