selectbytheme.cpp

这是一个GPS相关的程序

/*******************************************************************************
    SelectByTheme.cpp
    Copyright (C) Victor Olaya

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*******************************************************************************/
#include "SelectByTheme.h"
#include "ShapeSelector.h"

#define METHOD_NEW_SEL 0
#define METHOD_ADD_TO_SEL 1
#define METHOD_SELECT_FROM_SEL 2

CSelectByTheme::CSelectByTheme(void){

	Parameters.Set_Name(_TL("Select by theme"));

	Parameters.Set_Description(_TW("(c) 2004 by Victor Olaya. Select by Theme"));

	Parameters.Add_Shapes(NULL,
						"SHAPES",
						_TL("Shapes"),
						_TL(""),
						PARAMETER_INPUT);

	Parameters.Add_Shapes(NULL,
						"SHAPES2",
						_TL("Shapes 2"),
						_TL(""),
						PARAMETER_INPUT);

	Parameters.Add_Choice(NULL, 
						"CONDITION", 
						_TL("Condition"), 
						_TL("Select features in Shapes 1 that fulfil this condition"), 
						_TW(
						"Intersect|"
						"Are completely within|"
						"Completely contain|"
						"Have their center in|"
						"Contain the center of|"),
						0);

	Parameters.Add_Choice(NULL, 
						"METHOD", 
						_TL("Method"), 
						_TL(""), 
						_TW(
						"New selection|"
						"Add to current selection|"
						"Select from current selection|"),
						0);

}//constructor

CSelectByTheme::~CSelectByTheme(void){}

bool CSelectByTheme::On_Execute(void){

	CSG_Shapes *pShapes, *pShapes2;
	CSG_Table *pTable;
	CShapeSelector *pSelector;	
	bool *pRecordWasSelected;
	int *pSelectedRecords;
	int iNumSelectedRecords = 0;
	int iMethod;
	int iRecord;
	int iCondition;
	int i;

	pShapes = Parameters("SHAPES")->asShapes();
	pShapes2 = Parameters("SHAPES2")->asShapes();
	pTable	= &pShapes->Get_Table();
	iCondition = Parameters("CONDITION")->asInt();
	iMethod = Parameters("METHOD")->asInt();

	pRecordWasSelected = new bool[pTable->Get_Record_Count()];

	if (iMethod == METHOD_SELECT_FROM_SEL){
		for (i = 0; i < pTable->Get_Record_Count(); i++){
			if (pTable->Get_Record(i)->is_Selected()){
				pRecordWasSelected[i] = true;
			}//if
			else{
				pRecordWasSelected[i] = false;
			}//else
		}//for
	}//if

	if (iMethod != METHOD_ADD_TO_SEL){
		for (i = 0; i < pTable->Get_Record_Count(); i++){
			if (pTable->Get_Record(i)->is_Selected()){
				pTable->Select(i, true);
			}//if
		}//for
	}//if

	pSelector = new CShapeSelector(pShapes, pShapes2, iCondition);
	pSelectedRecords = &pSelector->GetSelectedRecords();
	iNumSelectedRecords = pSelector->GetSelectedRecordsCount();

	for (i = 0; i < iNumSelectedRecords; i++){
		iRecord = pSelectedRecords[i];
		if (!pTable->Get_Record(iRecord)->is_Selected()){
			if (iMethod == METHOD_SELECT_FROM_SEL){
				if (pRecordWasSelected[iRecord]){
					pTable->Select(iRecord, true);
				}//if
			}//if
			else{
				pTable->Select(iRecord, true);
			}//else
		}//if
	}//for

	DataObject_Update(pShapes, false);

	return true;
	
}//method