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qgscustomprojectiondialog.cpp
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qgscustomprojectiondialog.cpp
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/***************************************************************************
qgscustomprojectiondialog.cpp
-------------------
begin : 2005
copyright : (C) 2005 by Tim Sutton
email : tim@linfiniti.com
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "qgscustomprojectiondialog.h"
//qgis includes
#include "qgis.h" //<--magick numbers
#include "qgisapp.h" //<--theme icons
#include "qgsapplication.h"
#include "qgslogger.h"
//qt includes
#include <QFileInfo>
#include <QMessageBox>
#include <QLocale>
//stdc++ includes
#include <cassert>
#include <fstream>
#include <sqlite3.h>
#include "qgslogger.h"
//proj4 includes
extern "C"
{
#include <proj_api.h>
}
QgsCustomProjectionDialog::QgsCustomProjectionDialog( QWidget *parent, Qt::WFlags fl )
: QDialog( parent, fl )
{
setupUi( this );
pbnFirst->setIcon( QgisApp::getThemeIcon( "mIconFirst.png" ) );
pbnPrevious->setIcon( QgisApp::getThemeIcon( "mIconPrevious.png" ) );
pbnNext->setIcon( QgisApp::getThemeIcon( "mIconNext.png" ) );
pbnLast->setIcon( QgisApp::getThemeIcon( "mIconLast.png" ) );
pbnNew->setIcon( QgisApp::getThemeIcon( "mIconNew.png" ) );
pbnSave->setIcon( QgisApp::getThemeIcon( "mActionFileSave.png" ) );
pbnDelete->setIcon( QgisApp::getThemeIcon( "mIconDelete.png" ) );
// user database is created at QGIS startup in QgisApp::createDB
// we just check whether there is our database [MD]
QFileInfo myFileInfo;
myFileInfo.setFile( QgsApplication::qgisSettingsDirPath() );
if ( !myFileInfo.exists( ) )
{
QgsDebugMsg( "The qgis.db does not exist" );
}
//
// Setup member vars
//
mCurrentRecordId = "";
//
// Set up databound controls
//
// deprecated methods
//getProjList();
//getEllipsoidList();
mRecordCountLong = getRecordCount();
if ( mRecordCountLong > 0 )
on_pbnFirst_clicked();
else
on_pbnNew_clicked();
//automatically go to insert mode if there are not recs yet
if ( mRecordCountLong < 1 )
{
on_pbnNew_clicked();
}
}
QgsCustomProjectionDialog::~QgsCustomProjectionDialog()
{
}
/*
* These two methods will be deprecated
*
void QgsCustomProjectionDialog::getProjList ()
{
//
// Populate the projection combo
//
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
//check the db is available
myResult = sqlite3_open(QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase);
if(myResult!=SQLITE_OK)
{
QgsDebugMsg(QString("Can't open database: %1").arg(sqlite3_errmsg(myDatabase)));
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert(myResult == SQLITE_OK);
}
// Set up the query to retrieve the projection information needed to populate the CRS list
QString mySql = "select * from tbl_projection order by name";
myResult = sqlite3_prepare(myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail);
// XXX Need to free memory from the error msg if one is set
if(myResult == SQLITE_OK)
{
while(sqlite3_step(myPreparedStatement) == SQLITE_ROW)
{
cboProjectionFamily->insertItem(QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,1)));
}
}
sqlite3_finalize(myPreparedStatement);
sqlite3_close(myDatabase);
}
void QgsCustomProjectionDialog::getEllipsoidList()
{
//
// Populate the ellipsoid combo
//
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
//check the db is available
myResult = sqlite3_open(QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase);
if(myResult!=SQLITE_OK)
{
QgsDebugMsg(QString("Can't open database: %1").arg(sqlite3_errmsg(myDatabase)));
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert(myResult == SQLITE_OK);
}
// Set up the query to retrieve the projection information needed to populate the ELLIPSOID list
QString mySql = "select * from tbl_ellipsoid order by name";
myResult = sqlite3_prepare(myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail);
// XXX Need to free memory from the error msg if one is set
if(myResult == SQLITE_OK)
{
while(sqlite3_step(myPreparedStatement) == SQLITE_ROW)
{
cboEllipsoid->insertItem(QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,1)));
}
}
// close the sqlite3 statement
sqlite3_finalize(myPreparedStatement);
sqlite3_close(myDatabase);
}
*/
void QgsCustomProjectionDialog::on_pbnDelete_clicked()
{
if ( QMessageBox::Ok != QMessageBox::warning(
this,
tr( "Delete Projection Definition?" ),
tr( "Deleting a projection definition is not reversable. Do you want to delete it?" ),
QMessageBox::Ok | QMessageBox::Cancel ) )
{
return ;
}
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
QString myName;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
// Set up the query to retrieve the projection information needed to populate the ELLIPSOID list
QString mySql = "delete from tbl_srs where srs_id='" + mCurrentRecordId + "'";
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
QgsDebugMsg( QString( "Query to delete current:%1" ).arg( mySql ) );
if ( myResult == SQLITE_OK )
{
sqlite3_step( myPreparedStatement );
}
// close the sqlite3 statement
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
//move to an appropriate rec now this one is gone
--mRecordCountLong;
if ( mRecordCountLong < 1 )
{
on_pbnNew_clicked();
}
else if ( mCurrentRecordLong == 1 )
{
on_pbnFirst_clicked();
}
else if ( mCurrentRecordLong > mRecordCountLong )
{
on_pbnLast_clicked();
}
else
{
mCurrentRecordLong = mCurrentRecordLong - 2;
on_pbnNext_clicked();
}
return ;
}
void QgsCustomProjectionDialog::on_pbnClose_clicked()
{
close();
}
long QgsCustomProjectionDialog::getRecordCount()
{
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
long myRecordCount = 0;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
// Set up the query to retrieve the projection information needed to populate the ELLIPSOID list
QString mySql = "select count(*) from tbl_srs";
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
{
QString myRecordCountString = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
myRecordCount = myRecordCountString.toLong();
}
}
// close the sqlite3 statement
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
return myRecordCount;
}
QString QgsCustomProjectionDialog::getProjectionFamilyName( QString theProjectionFamilyAcronym )
{
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
QString myName;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
// Set up the query to retrieve the projection information needed to populate the ELLIPSOID list
QString mySql = "select name from tbl_projection where acronym='" + theProjectionFamilyAcronym + "'";
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
myName = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
}
// close the sqlite3 statement
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
return myName;
}
QString QgsCustomProjectionDialog::getEllipsoidName( QString theEllipsoidAcronym )
{
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
QString myName;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
// Set up the query to retrieve the projection information needed to populate the ELLIPSOID list
QString mySql = "select name from tbl_ellipsoid where acronym='" + theEllipsoidAcronym + "'";
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
myName = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
}
// close the sqlite3 statement
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
return myName;
}
QString QgsCustomProjectionDialog::getProjectionFamilyAcronym( QString theProjectionFamilyName )
{
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
QString myName;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
// Set up the query to retrieve the projection information needed to populate the ELLIPSOID list
QString mySql = "select acronym from tbl_projection where name='" + theProjectionFamilyName + "'";
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
myName = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
}
// close the sqlite3 statement
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
return myName;
}
QString QgsCustomProjectionDialog::getEllipsoidAcronym( QString theEllipsoidName )
{
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
QString myName;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
// Set up the query to retrieve the projection information needed to populate the ELLIPSOID list
QString mySql = "select acronym from tbl_ellipsoid where name='" + theEllipsoidName + "'";
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
myName = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
}
// close the sqlite3 statement
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
return myName;
}
void QgsCustomProjectionDialog::on_pbnFirst_clicked()
{
QgsDebugMsg( "entered." );
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
QString mySql = "select * from tbl_srs order by srs_id limit 1";
QgsDebugMsg( QString( "Query to move first:%1" ).arg( mySql ) );
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
{
mCurrentRecordId = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
leName->setText( QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 1 ) ) );
//QString myProjectionFamilyId = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,2));
//cboProjectionFamily->setCurrentText(getProjectionFamilyName(myProjectionFamilyId));
//QString myEllipsoidId = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,3));
//cboEllipsoid->setCurrentText(getEllipsoidName(myEllipsoidId));
leParameters->setText( QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 4 ) ) );
mCurrentRecordLong = 1;
lblRecordNo->setText( QString::number( mCurrentRecordLong ) + " of " + QString::number( mRecordCountLong ) );
}
}
else
{
QgsDebugMsg( QString( "pbnFirst query failed: %1" ).arg( mySql ) );
}
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
//enable nav buttons as appropriate
pbnFirst->setEnabled( false );
pbnPrevious->setEnabled( false );
//automatically go to insert mode if there are not recs yet
if ( mRecordCountLong < 1 )
{
on_pbnNew_clicked();
pbnDelete->setEnabled( false );
}
else if ( mCurrentRecordLong == mRecordCountLong )
{
pbnNext->setEnabled( false );
pbnLast->setEnabled( false );
pbnDelete->setEnabled( true );
}
else
{
pbnNext->setEnabled( true );
pbnLast->setEnabled( true );
pbnDelete->setEnabled( true );
}
}
void QgsCustomProjectionDialog::on_pbnPrevious_clicked()
{
QgsDebugMsg( "entered." );
if ( mCurrentRecordLong <= 1 )
{
return;
}
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
QString mySql = "select * from tbl_srs where srs_id < " + mCurrentRecordId + " order by srs_id desc limit 1";
QgsDebugMsg( QString( "Query to move previous:%1" ).arg( mySql ) );
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
{
mCurrentRecordId = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
leName->setText( QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 1 ) ) );
//QString myProjectionFamilyId = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,2));
//cboProjectionFamily->setCurrentText(getProjectionFamilyName(myProjectionFamilyId));
//QString myEllipsoidId = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,3));
//cboEllipsoid->setCurrentText(getEllipsoidName(myEllipsoidId));
leParameters->setText( QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 4 ) ) ),
--mCurrentRecordLong;
lblRecordNo->setText( QString::number( mCurrentRecordLong ) + " of " + QString::number( mRecordCountLong ) );
}
}
else
{
QgsDebugMsg( QString( "pbnPrevious query failed: %1" ).arg( mySql ) );
}
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
//enable nav buttons as appropriate
if ( mCurrentRecordLong <= 1 )
{
pbnFirst->setEnabled( false );
pbnPrevious->setEnabled( false );
}
else
{
pbnFirst->setEnabled( true );
pbnPrevious->setEnabled( true );
}
if ( mCurrentRecordLong == mRecordCountLong )
{
pbnNext->setEnabled( false );
pbnLast->setEnabled( false );
}
else
{
pbnNext->setEnabled( true );
pbnLast->setEnabled( true );
}
}
void QgsCustomProjectionDialog::on_pbnNext_clicked()
{
QgsDebugMsg( "entered." );
if ( mCurrentRecordLong >= mRecordCountLong )
{
return;
}
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
QString mySql = "select * from tbl_srs where srs_id > " + mCurrentRecordId + " order by srs_id asc limit 1";
QgsDebugMsg( QString( "Query to move next:%1" ).arg( mySql ) );
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
{
mCurrentRecordId = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
leName->setText( QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 1 ) ) );
//QString myProjectionFamilyId = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,2));
//cboProjectionFamily->setCurrentText(getProjectionFamilyName(myProjectionFamilyId));
//QString myEllipsoidId = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,3));
//cboEllipsoid->setCurrentText(getEllipsoidName(myEllipsoidId));
leParameters->setText( QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 4 ) ) );
++mCurrentRecordLong;
lblRecordNo->setText( QString::number( mCurrentRecordLong ) + " of " + QString::number( mRecordCountLong ) );
}
}
else
{
QgsDebugMsg( QString( "pbnNext query failed: %1" ).arg( mySql ) );
}
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
//enable nav buttons as appropriate
if ( mCurrentRecordLong == mRecordCountLong )
{
pbnNext->setEnabled( false );
pbnLast->setEnabled( false );
}
else
{
pbnNext->setEnabled( true );
pbnLast->setEnabled( true );
}
if ( mRecordCountLong <= 1 )
{
pbnFirst->setEnabled( false );
pbnPrevious->setEnabled( false );
}
else
{
pbnFirst->setEnabled( true );
pbnPrevious->setEnabled( true );
}
}
void QgsCustomProjectionDialog::on_pbnLast_clicked()
{
QgsDebugMsg( "entered." );
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1" ).arg( sqlite3_errmsg( myDatabase ) ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
QString mySql = "select * from tbl_srs order by srs_id desc limit 1";
QgsDebugMsg( QString( "Query to move last:%1" ).arg( mySql ) );
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
// XXX Need to free memory from the error msg if one is set
if ( myResult == SQLITE_OK )
{
if ( sqlite3_step( myPreparedStatement ) == SQLITE_ROW )
{
mCurrentRecordId = QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 0 ) );
leName->setText( QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 1 ) ) );
//QString myProjectionFamilyId = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,2));
//cboProjectionFamily->setCurrentText(getProjectionFamilyName(myProjectionFamilyId));
//QString myEllipsoidId = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,3));
//cboEllipsoid->setCurrentText(getEllipsoidName(myEllipsoidId));
leParameters->setText( QString::fromUtf8(( char * )sqlite3_column_text( myPreparedStatement, 4 ) ) );
mCurrentRecordLong = mRecordCountLong;
lblRecordNo->setText( QString::number( mCurrentRecordLong ) + " of " + QString::number( mRecordCountLong ) );
}
}
else
{
QgsDebugMsg( QString( "pbnLast query failed: %1" ).arg( mySql ) );
}
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
//enable nav buttons as appropriate
pbnNext->setEnabled( false );
pbnLast->setEnabled( false );
if ( mRecordCountLong <= 1 )
{
pbnFirst->setEnabled( false );
pbnPrevious->setEnabled( false );
}
else
{
pbnFirst->setEnabled( true );
pbnPrevious->setEnabled( true );
}
}
void QgsCustomProjectionDialog::on_pbnNew_clicked()
{
if ( pbnNew->text() == tr( "Abort" ) )
{
//if we get here, user has aborted add record
pbnNew->setIcon( QgisApp::getThemeIcon( "mIconNew.png" ) );
//next line needed for new/abort logic
pbnNew->setText( tr( "New" ) );
//get back to the last used record before insert was pressed
if ( mCurrentRecordId.isEmpty() )
{
on_pbnFirst_clicked();
}
else
{
mCurrentRecordLong = mLastRecordLong;
on_pbnNext_clicked();
}
}
else
{
//if we get here user has elected to add new record
pbnFirst->setEnabled( false );
pbnPrevious->setEnabled( false );
pbnNext->setEnabled( false );
pbnLast->setEnabled( false );
pbnDelete->setEnabled( false );
pbnNew->setIcon( QgisApp::getThemeIcon( "mIconNew.png" ) );
//next line needed for new/abort logic
pbnNew->setText( tr( "Abort" ) );
//clear the controls
leName->setText( "" );
leParameters->setText( "" );
//cboProjectionFamily->setCurrentItem(0);
//cboEllipsoid->setCurrentItem(0);
lblRecordNo->setText( "* of " + QString::number( mRecordCountLong ) );
//remember the rec we are on in case the user aborts
mLastRecordLong = mCurrentRecordLong;
mCurrentRecordId = "";
}
}
void QgsCustomProjectionDialog::on_pbnSave_clicked()
{
QgsDebugMsg( "entered." );
QString myName = leName->text();
QString myParameters = leParameters->text();
if ( myName.isEmpty() )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "This proj4 projection definition is not valid." )
+ tr( " Please give the projection a name before pressing save." ) );
return;
}
if ( myParameters.isEmpty() )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "This proj4 projection definition is not valid." )
+ tr( " Please add the parameters before pressing save." ) );
return;
}
//
// Now make sure parameters have proj and ellipse
//
QString myProjectionAcronym = getProjFromParameters();
QString myEllipsoidAcronym = getEllipseFromParameters();
if ( myProjectionAcronym.isNull() )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "This proj4 projection definition is not valid." )
+ tr( " Please add a proj= clause before pressing save." ) );
return;
}
#if 0
/** I am commenting this check out for now because of ticket #1146
* In 1.0.0 we should consider doing more sophisticated checks or just
* removing this commented block entirely. It is possible to set the
* parameters for the earths figure in ways other than using ellps (which
* is a convenience function in proj). For example the radius and flattenning
* can be specified and various other parameter permutations. See the proj
* manual section entitled 'Specifying the Earths Figure' for more details.
* Tim Sutton */
if ( myEllipsoidAcronym.isNull() )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "This proj4 ellipsoid definition is not valid. Please add a ellips= clause before pressing save.", "COMMENTED OUT" ) );
return;
}
#endif
//
// We must check the prj def is valid!
// NOTE : the test below may be bogus as the processes abpve emsired there
// is always at least a projection and ellpsoid - which proj will parse as acceptible
//
projPJ myProj = pj_init_plus( leParameters->text().toLocal8Bit().data() );
if ( myProj == NULL )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "This proj4 projection definition is not valid." )
+ tr( " Please correct before pressing save." ) );
pj_free( myProj );
return;
}
pj_free( myProj );
/** TODO Check the projection is not a duplicate ! */
//CREATE TABLE tbl_srs (
//srs_id integer primary key,
//description varchar(255) NOT NULL,
//projection_acronym varchar(20) NOT NULL default '',
//ellipsoid_acronym varchar(20) NOT NULL default '',
//parameters varchar(80) NOT NULL default ''
//);
QString mySql;
//insert a record if mode is enabled
if ( pbnNew->text() == tr( "Abort" ) )
{
//if this is the first record we need to ensure that its srs_id is 10000. For
//any rec after that sqlite3 will take care of the autonumering
//this was done to support sqlite 3.0 as it does not yet support
//the autoinc related system tables.
if ( getRecordCount() == 0 )
{
mySql = QString( "insert into tbl_srs (srs_id,description,projection_acronym,ellipsoid_acronym,parameters,is_geo) " )
+ " values (" + QString::number( USER_CRS_START_ID ) + ",'"
+ sqlSafeString( myName ) + "','" + myProjectionAcronym
+ "','" + myEllipsoidAcronym + "','" + sqlSafeString( myParameters )
+ "',0)"; // <-- is_geo shamelessly hard coded for now
}
else
{
mySql = "insert into tbl_srs (description,projection_acronym,ellipsoid_acronym,parameters,is_geo) values ('"
+ sqlSafeString( myName ) + "','" + myProjectionAcronym
+ "','" + myEllipsoidAcronym + "','" + sqlSafeString( myParameters )
+ "',0)"; // <-- is_geo shamelessly hard coded for now
}
}
else //user is updating an existing record
{
mySql = "update tbl_srs set description='" + sqlSafeString( myName )
+ "',projection_acronym='" + myProjectionAcronym
+ "',ellipsoid_acronym='" + myEllipsoidAcronym
+ "',parameters='" + sqlSafeString( myParameters ) + "' "
+ ",is_geo=0" // <--shamelessly hard coded for now
+ " where srs_id='" + mCurrentRecordId + "'"
;
}
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
//check the db is available
myResult = sqlite3_open( QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase );
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( QString( "Can't open database: %1 \n please notify QGIS developers of this error \n %2 (file name) " ).arg( sqlite3_errmsg( myDatabase ) ).arg( QgsApplication::qgisUserDbFilePath() ) );
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert( myResult == SQLITE_OK );
}
QgsDebugMsg( QString( "Update or insert sql \n%1" ).arg( mySql ) );
myResult = sqlite3_prepare( myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail );
sqlite3_step( myPreparedStatement );
// XXX Need to free memory from the error msg if one is set
if ( myResult != SQLITE_OK )
{
QgsDebugMsg( "Update or insert failed in custom projection dialog " );
}
//reinstate button if we were doing an insert
else if ( pbnNew->text() == tr( "Abort" ) )
{
pbnNew->setText( tr( "New" ) );
//get to the newly inserted record
++mRecordCountLong;
mCurrentRecordLong = mRecordCountLong - 1;
on_pbnLast_clicked();
}
sqlite3_finalize( myPreparedStatement );
sqlite3_close( myDatabase );
pbnDelete->setEnabled( true );
}
void QgsCustomProjectionDialog::on_pbnCalculate_clicked()
{
QgsDebugMsg( "entered." );
//
// We must check the prj def is valid!
//
projPJ myProj = pj_init_plus( leTestParameters->text().toLocal8Bit().data() );
QgsDebugMsg( QString( "My proj: %1" ).arg( leTestParameters->text() ) );
if ( myProj == NULL )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "This proj4 projection definition is not valid." ) );
projectedX->setText( "" );
projectedY->setText( "" );
pj_free( myProj );
return;
}
// Get the WGS84 coordinates
bool okN, okE;
double northing = northWGS84->text().toDouble( &okN ) * DEG_TO_RAD;
double easthing = eastWGS84->text().toDouble( &okE ) * DEG_TO_RAD;
if ( !okN || !okE )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "Northing and Easthing must be in decimal form." ) );
projectedX->setText( "" );
projectedY->setText( "" );
pj_free( myProj );
return;
}
projPJ wgs84Proj = pj_init_plus( GEOPROJ4.toLocal8Bit().data() ); //defined in qgis.h
if ( wgs84Proj == NULL )
{
QMessageBox::information( this, tr( "QGIS Custom Projection" ),
tr( "Internal Error (source projection invalid?)" ) );
projectedX->setText( "" );
projectedY->setText( "" );
pj_free( myProj );
return;
}
double z = 0.0;
int projResult = pj_transform( wgs84Proj, myProj, 1, 0, &easthing, &northing, &z );
if ( projResult != 0 )
{
projectedX->setText( "Error" );
projectedY->setText( "Error" );
QgsDebugMsg( pj_strerrno( projResult ) );
}
else
{
QString tmp;
tmp = QLocale::system().toString( northing, 'f', 4 );
projectedX->setText( tmp );
tmp = QLocale::system().toString( easthing, 'f', 4 );
projectedY->setText( tmp );
}
//
pj_free( myProj );
pj_free( wgs84Proj );
}
/* This is deprecated - to be deleted
void QgsCustomProjectionDialog::cboProjectionFamily_highlighted( const QString & theText)
{
QgsDebugMsg("Projection selected from combo");
//search the sqlite user projections db for the projection entry
//and display its parameters
sqlite3 *myDatabase;
const char *myTail;
sqlite3_stmt *myPreparedStatement;
int myResult;
//check the db is available
myResult = sqlite3_open(QgsApplication::qgisUserDbFilePath().toUtf8().data(), &myDatabase);
if(myResult!=SQLITE_OK)
{
QgsDebugMsg(QString("Can't open database: %1").arg(sqlite3_errmsg(myDatabase)));
// XXX This will likely never happen since on open, sqlite creates the
// database if it does not exist.
assert(myResult == SQLITE_OK);
}
// Set up the query to retrieve the projection information needed to populate the CRS list
QString mySql = "select parameters from tbl_projection name where name='"+theText+"'";
QgsDebugMsg(QString("Query to get proj params:%1").arg(mySql));
myResult = sqlite3_prepare(myDatabase, mySql.toUtf8(), mySql.length(), &myPreparedStatement, &myTail);
// XXX Need to free memory from the error msg if one is set
if(myResult == SQLITE_OK)
{
sqlite3_step(myPreparedStatement) == SQLITE_ROW;
QString myParametersString = QString::fromUtf8((char *)sqlite3_column_text(myPreparedStatement,0));
QgsDebugMsg(QString("Setting parameters text box to: %1").arg(myParametersString));
txtExpectedParameters->setReadOnly(false);
txtExpectedParameters->setText(myParametersString);
txtExpectedParameters->setReadOnly(true);
}
sqlite3_finalize(myPreparedStatement);
sqlite3_close(myDatabase);
}
*/
QString QgsCustomProjectionDialog::getProjFromParameters()
{
QgsLogger::debug( "QgsCustomProjectionDialog::getProjFromParameters()" );
QString myProj4String = leParameters->text();
QRegExp myProjRegExp( "\\+proj=[a-zA-Z]*" );
int myStart = 0;
myStart = myProjRegExp.indexIn( myProj4String, myStart );
if ( myStart == -1 )
{
QgsDebugMsg( "proj string supplied has no +proj argument!" );
return NULL;
}
else
{
int myLength = myProjRegExp.matchedLength();
QString myProjectionAcronym = myProj4String.mid( myStart + ( PROJ_PREFIX_LEN ), myLength - ( PROJ_PREFIX_LEN ) );//+1 for space
return myProjectionAcronym;
}
}