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qgsstylev2.cpp
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qgsstylev2.cpp
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/***************************************************************************
qgsstylev2.cpp
---------------------
begin : November 2009
copyright : (C) 2009 by Martin Dobias
email : wonder dot sk at gmail dot 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 "qgsstylev2.h"
#include "qgssymbolv2.h"
#include "qgsvectorcolorrampv2.h"
#include "qgssymbollayerv2registry.h"
#include "qgsapplication.h"
#include "qgslogger.h"
#include <QDomDocument>
#include <QDomElement>
#include <QDomNode>
#include <QDomNodeList>
#include <QFile>
#include <QTextStream>
#include <QByteArray>
#include <sqlite3.h>
#define STYLE_CURRENT_VERSION "1"
QgsStyleV2 *QgsStyleV2::mDefaultStyle = 0;
QgsStyleV2::QgsStyleV2() : QObject()
{
mCurrentDB = 0;
}
QgsStyleV2::~QgsStyleV2()
{
clear();
}
QgsStyleV2* QgsStyleV2::defaultStyle() // static
{
if ( !mDefaultStyle )
{
QString styleFilename = QgsApplication::userStyleV2Path();
// copy default style if user style doesn't exist
if ( !QFile::exists( styleFilename ) )
{
QFile::copy( QgsApplication::defaultStyleV2Path(), styleFilename );
}
mDefaultStyle = new QgsStyleV2;
mDefaultStyle->load( styleFilename );
}
return mDefaultStyle;
}
void QgsStyleV2::clear()
{
for ( QMap<QString, QgsSymbolV2*>::iterator its = mSymbols.begin(); its != mSymbols.end(); ++its )
delete its.value();
for ( QMap<QString, QgsVectorColorRampV2*>::iterator itr = mColorRamps.begin(); itr != mColorRamps.end(); ++itr )
delete itr.value();
mSymbols.clear();
mColorRamps.clear();
if ( mCurrentDB )
sqlite3_close( mCurrentDB );
}
bool QgsStyleV2::addSymbol( QString name, QgsSymbolV2* symbol, bool update )
{
if ( !symbol || name.isEmpty() )
return false;
// delete previous symbol (if any)
if ( mSymbols.contains( name ) )
{
// TODO remove groups and tags?
delete mSymbols.value( name );
mSymbols.insert( name, symbol );
if ( update )
updateSymbol( SymbolEntity, name );
}
else
{
mSymbols.insert( name, symbol );
if ( update )
saveSymbol( name, symbol, 0, QStringList() );
}
return true;
}
bool QgsStyleV2::saveSymbol( QString name, QgsSymbolV2* symbol, int groupid, QStringList tags )
{
// TODO add support for tags and groups
Q_UNUSED( tags );
QDomDocument doc( "dummy" );
QDomElement symEl = QgsSymbolLayerV2Utils::saveSymbol( name, symbol, doc );
if ( symEl.isNull() )
{
QgsDebugMsg( "Couldn't convert symbol to valid XML!" );
return false;
}
QByteArray xmlArray;
QTextStream stream( &xmlArray );
stream.setCodec( "UTF-8" );
symEl.save( stream, 4 );
char *query = sqlite3_mprintf( "INSERT INTO symbol VALUES (NULL, '%q', '%q', %d);",
name.toUtf8().constData(), xmlArray.constData(), groupid );
if ( !runEmptyQuery( query ) )
{
QgsDebugMsg( "Couldn't insert symbol into the database!" );
return false;
}
emit symbolSaved( name, symbol );
return true;
}
bool QgsStyleV2::removeSymbol( QString name )
{
QgsSymbolV2 *symbol = mSymbols.take( name );
if ( !symbol )
return false;
// remove from map and delete
delete symbol;
// TODO
// Simplify this work here, its STUPID to run two DB queries for the sake of remove()
if ( !mCurrentDB )
{
QgsDebugMsg( "Sorry! Cannot open database to tag." );
return false;
}
int symbolid = symbolId( name );
if ( !symbolid )
{
QgsDebugMsg( "No such symbol for deleting in database: " + name + ". Cheers." );
}
remove( SymbolEntity, symbolid );
return true;
}
QgsSymbolV2* QgsStyleV2::symbol( QString name )
{
const QgsSymbolV2 *symbol = symbolRef( name );
return symbol ? symbol->clone() : 0;
}
const QgsSymbolV2 *QgsStyleV2::symbolRef( QString name ) const
{
return mSymbols.value( name );
}
int QgsStyleV2::symbolCount()
{
return mSymbols.count();
}
QStringList QgsStyleV2::symbolNames()
{
return mSymbols.keys();
}
bool QgsStyleV2::addColorRamp( QString name, QgsVectorColorRampV2* colorRamp, bool update )
{
if ( !colorRamp || name.isEmpty() )
return false;
// delete previous color ramps (if any)
if ( mColorRamps.contains( name ) )
{
// TODO remove groups and tags?
delete mColorRamps.value( name );
mColorRamps.insert( name, colorRamp );
if ( update )
updateSymbol( ColorrampEntity, name );
}
else
{
mColorRamps.insert( name, colorRamp );
if ( update )
saveColorRamp( name, colorRamp, 0, QStringList() );
}
return true;
}
bool QgsStyleV2::saveColorRamp( QString name, QgsVectorColorRampV2* ramp, int groupid, QStringList tags )
{
// TODO add support for groups and tags
Q_UNUSED( tags );
// insert it into the database
QDomDocument doc( "dummy" );
QDomElement rampEl = QgsSymbolLayerV2Utils::saveColorRamp( name, ramp, doc );
if ( rampEl.isNull() )
{
QgsDebugMsg( "Couldn't convert color ramp to valid XML!" );
return false;
}
QByteArray xmlArray;
QTextStream stream( &xmlArray );
stream.setCodec( "UTF-8" );
rampEl.save( stream, 4 );
char *query = sqlite3_mprintf( "INSERT INTO colorramp VALUES (NULL, '%q', '%q', %d);",
name.toUtf8().constData(), xmlArray.constData(), groupid );
if ( !runEmptyQuery( query ) )
{
QgsDebugMsg( "Couldn't insert colorramp into the database!" );
return false;
}
return true;
}
bool QgsStyleV2::removeColorRamp( QString name )
{
QgsVectorColorRampV2 *ramp = mColorRamps.take( name );
if ( !ramp )
return false;
char *query = sqlite3_mprintf( "DELETE FROM colorramp WHERE name='%q'", name.toUtf8().constData() );
if ( !runEmptyQuery( query ) )
{
QgsDebugMsg( "Couldn't remove color ramp from the database." );
return false;
}
delete ramp;
return true;
}
QgsVectorColorRampV2* QgsStyleV2::colorRamp( QString name )
{
const QgsVectorColorRampV2 *ramp = colorRampRef( name );
return ramp ? ramp->clone() : 0;
}
const QgsVectorColorRampV2* QgsStyleV2::colorRampRef( QString name ) const
{
return mColorRamps.value( name );
}
int QgsStyleV2::colorRampCount()
{
return mColorRamps.count();
}
QStringList QgsStyleV2::colorRampNames()
{
return mColorRamps.keys();
}
bool QgsStyleV2::openDB( QString filename )
{
int rc = sqlite3_open( filename.toUtf8(), &mCurrentDB );
if ( rc )
{
mErrorString = "Couldn't open the style database: " + QString( sqlite3_errmsg( mCurrentDB ) );
sqlite3_close( mCurrentDB );
return false;
}
return true;
}
bool QgsStyleV2::load( QString filename )
{
mErrorString.clear();
// Open the sqlite database
if ( !openDB( filename ) )
{
mErrorString = "Unable to open database file specified";
QgsDebugMsg( mErrorString );
return false;
}
// Make sure there are no Null fields in parenting symbols ang groups
char *query = sqlite3_mprintf( "UPDATE symbol SET groupid=0 WHERE groupid IS NULL;"
"UPDATE colorramp SET groupid=0 WHERE groupid IS NULL;"
"UPDATE symgroup SET parent=0 WHERE parent IS NULL;" );
runEmptyQuery( query );
// First create all the main symbols
query = sqlite3_mprintf( "SELECT * FROM symbol" );
sqlite3_stmt *ppStmt;
int nError = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
while ( nError == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
QDomDocument doc;
QString symbol_name = QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, SymbolName ) );
QString xmlstring = QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, SymbolXML ) );
if ( !doc.setContent( xmlstring ) )
{
QgsDebugMsg( "Cannot open symbol " + symbol_name );
continue;
}
QDomElement symElement = doc.documentElement();
QgsSymbolV2 *symbol = QgsSymbolLayerV2Utils::loadSymbol( symElement );
if ( symbol != NULL )
mSymbols.insert( symbol_name, symbol );
}
sqlite3_finalize( ppStmt );
query = sqlite3_mprintf( "SELECT * FROM colorramp" );
nError = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
while ( nError == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
QDomDocument doc;
QString ramp_name = QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, ColorrampName ) );
QString xmlstring = QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, ColorrampXML ) );
if ( !doc.setContent( xmlstring ) )
{
QgsDebugMsg( "Cannot open symbol " + ramp_name );
continue;
}
QDomElement rampElement = doc.documentElement();
QgsVectorColorRampV2 *ramp = QgsSymbolLayerV2Utils::loadColorRamp( rampElement );
if ( ramp )
mColorRamps.insert( ramp_name, ramp );
}
mFileName = filename;
return true;
}
bool QgsStyleV2::save( QString filename )
{
mErrorString.clear();
if ( filename.isEmpty() )
filename = mFileName;
// TODO evaluate the requirement of this function and change implementation accordingly
// TODO remove QEXPECT_FAIL from TestStyleV2::testSaveLoad() when done
#if 0
QDomDocument doc( "qgis_style" );
QDomElement root = doc.createElement( "qgis_style" );
root.setAttribute( "version", STYLE_CURRENT_VERSION );
doc.appendChild( root );
QDomElement symbolsElem = QgsSymbolLayerV2Utils::saveSymbols( mSymbols, "symbols", doc );
QDomElement rampsElem = doc.createElement( "colorramps" );
// save color ramps
for ( QMap<QString, QgsVectorColorRampV2*>::iterator itr = mColorRamps.begin(); itr != mColorRamps.end(); ++itr )
{
QDomElement rampEl = QgsSymbolLayerV2Utils::saveColorRamp( itr.key(), itr.value(), doc );
rampsElem.appendChild( rampEl );
}
root.appendChild( symbolsElem );
root.appendChild( rampsElem );
// save
QFile f( filename );
if ( !f.open( QFile::WriteOnly ) )
{
mErrorString = "Couldn't open file for writing: " + filename;
return false;
}
QTextStream ts( &f );
ts.setCodec( "UTF-8" );
doc.save( ts, 2 );
f.close();
#endif
mFileName = filename;
return true;
}
bool QgsStyleV2::renameSymbol( QString oldName, QString newName )
{
QgsSymbolV2 *symbol = mSymbols.take( oldName );
if ( !symbol )
return false;
mSymbols.insert( newName, symbol );
if ( !mCurrentDB )
{
QgsDebugMsg( "Sorry! Cannot open database to tag." );
return false;
}
int symbolid = symbolId( oldName );
if ( !symbolid )
{
QgsDebugMsg( "No such symbol for tagging in database: " + oldName );
return false;
}
rename( SymbolEntity, symbolid, newName );
return true;
}
bool QgsStyleV2::renameColorRamp( QString oldName, QString newName )
{
QgsVectorColorRampV2 *ramp = mColorRamps.take( oldName );
if ( !ramp )
return false;
mColorRamps.insert( newName, ramp );
int rampid = 0;
sqlite3_stmt *ppStmt;
char *query = sqlite3_mprintf( "SELECT id FROM colorramp WHERE name='%q'", oldName.toUtf8().constData() );
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
if ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
rampid = sqlite3_column_int( ppStmt, 0 );
}
sqlite3_finalize( ppStmt );
rename( ColorrampEntity, rampid, newName );
return true;
}
QStringList QgsStyleV2::groupNames()
{
QStringList groupNames;
sqlite3_stmt *ppStmt;
const char *query = "SELECT * FROM symgroup";
int nError = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
while ( nError == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
groupNames << QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, SymgroupName ) );
}
sqlite3_finalize( ppStmt );
return groupNames;
}
QgsSymbolGroupMap QgsStyleV2::childGroupNames( QString parent )
{
// get the name list from the sqlite database and return as a QStringList
if ( !mCurrentDB )
{
QgsDebugMsg( "Cannot open database for listing groups" );
return QgsSymbolGroupMap();
}
char *query = 0;
int nError;
sqlite3_stmt *ppStmt;
// decide the query to be run based on parent group
if ( parent == "" || parent == QString() )
{
query = sqlite3_mprintf( "SELECT * FROM symgroup WHERE parent=0" );
}
else
{
char *subquery = sqlite3_mprintf( "SELECT * FROM symgroup WHERE name='%q'", parent.toUtf8().constData() );
nError = sqlite3_prepare_v2( mCurrentDB, subquery, -1, &ppStmt, NULL );
if ( nError == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
query = sqlite3_mprintf( "SELECT * FROM symgroup WHERE parent=%d", sqlite3_column_int( ppStmt, SymgroupId ) );
}
sqlite3_finalize( ppStmt );
}
if ( !query )
return QgsSymbolGroupMap();
QgsSymbolGroupMap groupNames;
// Now run the query and retrieve the group names
nError = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
while ( nError == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
QString group = QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, SymgroupName ) );
groupNames.insert( sqlite3_column_int( ppStmt, SymgroupId ), group );
}
sqlite3_finalize( ppStmt );
return groupNames;
}
QStringList QgsStyleV2::symbolsOfGroup( StyleEntity type, int groupid )
{
if ( !mCurrentDB )
{
QgsDebugMsg( QString( "Cannot Open database for getting group symbols of groupid: %1" ).arg( groupid ) );
return QStringList();
}
char *query;
if ( type == SymbolEntity )
{
query = sqlite3_mprintf( "SELECT name FROM symbol WHERE groupid=%d", groupid );
}
else if ( type == ColorrampEntity )
{
query = sqlite3_mprintf( "SELECT name FROM colorramp WHERE groupid=%d", groupid );
}
else
{
QgsDebugMsg( "No such style entity" );
return QStringList();
}
sqlite3_stmt *ppStmt;
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
QStringList symbols;
while ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
symbols << QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, 0 ) );
}
sqlite3_finalize( ppStmt );
return symbols;
}
QStringList QgsStyleV2::symbolsWithTag( StyleEntity type, int tagid )
{
if ( !mCurrentDB )
{
QgsDebugMsg( QString( "Cannot open database to get symbols of tagid %1" ).arg( tagid ) );
return QStringList();
}
char *subquery;
if ( type == SymbolEntity )
{
subquery = sqlite3_mprintf( "SELECT symbol_id FROM tagmap WHERE tag_id=%d", tagid );
}
else if ( type == ColorrampEntity )
{
subquery = sqlite3_mprintf( "SELECT symbol_id FROM ctagmap WHERE tag_id=%d", tagid );
}
else
{
QgsDebugMsg( "Unknown Entity" );
return QStringList();
}
sqlite3_stmt *ppStmt;
int nErr = sqlite3_prepare_v2( mCurrentDB, subquery, -1, &ppStmt, NULL );
// get the symbol <-> tag connection from table 'tagmap'
QStringList symbols;
while ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
int symbolId = sqlite3_column_int( ppStmt, 0 );
char *query = type == SymbolEntity
? sqlite3_mprintf( "SELECT name FROM symbol WHERE id=%d", symbolId )
: sqlite3_mprintf( "SELECT name FROM colorramp WHERE id=%d", symbolId );
sqlite3_stmt *ppStmt2;
int sErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt2, NULL );
while ( sErr == SQLITE_OK && sqlite3_step( ppStmt2 ) == SQLITE_ROW )
{
symbols << QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt2, 0 ) );
}
sqlite3_finalize( ppStmt2 );
}
sqlite3_finalize( ppStmt );
return symbols;
}
int QgsStyleV2::addGroup( QString groupName, int parentid )
{
if ( !mCurrentDB )
return 0;
char *query = sqlite3_mprintf( "INSERT INTO symgroup VALUES (NULL, '%q', %d)", groupName.toUtf8().constData(), parentid );
sqlite3_stmt *ppStmt;
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
if ( nErr == SQLITE_OK )
sqlite3_step( ppStmt );
sqlite3_finalize( ppStmt );
return ( int )sqlite3_last_insert_rowid( mCurrentDB );
}
int QgsStyleV2::addTag( QString tagname )
{
if ( !mCurrentDB )
return 0;
sqlite3_stmt *ppStmt;
char *query = sqlite3_mprintf( "INSERT INTO tag VALUES (NULL, '%q')", tagname.toUtf8().constData() );
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
if ( nErr == SQLITE_OK )
sqlite3_step( ppStmt );
sqlite3_finalize( ppStmt );
return ( int )sqlite3_last_insert_rowid( mCurrentDB );
}
void QgsStyleV2::rename( StyleEntity type, int id, QString newName )
{
char *query;
switch ( type )
{
case SymbolEntity:
query = sqlite3_mprintf( "UPDATE symbol SET name='%q' WHERE id=%d", newName.toUtf8().constData(), id );
break;
case GroupEntity:
query = sqlite3_mprintf( "UPDATE symgroup SET name='%q' WHERE id=%d", newName.toUtf8().constData(), id );
break;
case TagEntity:
query = sqlite3_mprintf( "UPDATE tag SET name='%q' WHERE id=%d", newName.toUtf8().constData(), id );
break;
case ColorrampEntity:
query = sqlite3_mprintf( "UPDATE colorramp SET name='%q' WHERE id=%d", newName.toUtf8().constData(), id );
break;
case SmartgroupEntity:
query = sqlite3_mprintf( "UPDATE smartgroup SET name='%q' WHERE id=%d", newName.toUtf8().constData(), id );
break;
default:
QgsDebugMsg( "Invalid Style Entity indicated" );
return;
}
if ( !runEmptyQuery( query ) )
mErrorString = "Could not rename!";
}
char* QgsStyleV2::getGroupRemoveQuery( int id )
{
char *query = sqlite3_mprintf( "SELECT parent FROM symgroup WHERE id=%d", id );
sqlite3_stmt *ppStmt;
int err = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
int parentid = 0;
if ( err == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
parentid = sqlite3_column_int( ppStmt, 0 );
sqlite3_finalize( ppStmt );
return sqlite3_mprintf( "UPDATE symbol SET groupid=%d WHERE groupid=%d;"
"UPDATE symgroup SET parent=%d WHERE parent=%d;"
"DELETE FROM symgroup WHERE id=%d", parentid, id, parentid, id, id );
}
void QgsStyleV2::remove( StyleEntity type, int id )
{
char *query;
switch ( type )
{
case SymbolEntity:
query = sqlite3_mprintf( "DELETE FROM symbol WHERE id=%d; DELETE FROM tagmap WHERE symbol_id=%d", id, id );
break;
case GroupEntity:
query = getGroupRemoveQuery( id );
break;
case TagEntity:
query = sqlite3_mprintf( "DELETE FROM tag WHERE id=%d; DELETE FROM tagmap WHERE tag_id=%d", id, id );
break;
case ColorrampEntity:
query = sqlite3_mprintf( "DELETE FROM colorramp WHERE id=%d", id );
break;
case SmartgroupEntity:
query = sqlite3_mprintf( "DELETE FROM smartgroup WHERE id=%d", id );
break;
default:
QgsDebugMsg( "Invalid Style Entity indicated" );
return;
}
if ( !runEmptyQuery( query ) )
{
QgsDebugMsg( "Could not delete entity!" );
}
}
bool QgsStyleV2::runEmptyQuery( char *query, bool freeQuery )
{
if ( !mCurrentDB )
return false;
char *zErr = 0;
int nErr = sqlite3_exec( mCurrentDB, query, NULL, NULL, &zErr );
if ( freeQuery )
{
sqlite3_free( query );
}
if ( nErr != SQLITE_OK )
{
QgsDebugMsg( zErr );
}
return zErr == SQLITE_OK;
}
bool QgsStyleV2::group( StyleEntity type, QString name, int groupid )
{
char *query;
switch ( type )
{
case SymbolEntity:
query = sqlite3_mprintf( "UPDATE symbol SET groupid=%d WHERE name='%q'", groupid, name.toUtf8().constData() );
break;
case ColorrampEntity:
query = sqlite3_mprintf( "UPDATE colorramp SET groupid=%d WHERE name='%q'", groupid, name.toUtf8().constData() );
break;
default:
QgsDebugMsg( "Wrong entity value. cannot apply group" );
return false;
}
return runEmptyQuery( query );
}
QStringList QgsStyleV2::findSymbols( StyleEntity type, QString qword )
{
if ( !mCurrentDB )
{
QgsDebugMsg( "Sorry! Cannot open database to search" );
return QStringList();
}
QString item = ( type == SymbolEntity ) ? "symbol" : "colorramp";
char *query = sqlite3_mprintf( "SELECT name FROM %q WHERE xml LIKE '%%%q%%'",
item.toUtf8().constData(), qword.toUtf8().constData() );
sqlite3_stmt *ppStmt;
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
QStringList symbols;
while ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
symbols << QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, 0 ) );
}
sqlite3_finalize( ppStmt );
query = sqlite3_mprintf( "SELECT id FROM tag WHERE name LIKE '%%%q%%'", qword.toUtf8().constData() );
nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
QStringList tagids;
while ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
tagids << QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, 0 ) );
}
sqlite3_finalize( ppStmt );
QString dummy = tagids.join( ", " );
if ( type == SymbolEntity )
{
query = sqlite3_mprintf( "SELECT symbol_id FROM tagmap WHERE tag_id IN (%q)",
dummy.toUtf8().constData() );
}
else
{
query = sqlite3_mprintf( "SELECT colorramp_id FROM ctagmap WHERE tag_id IN (%q)",
dummy.toUtf8().constData() );
}
nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
QStringList symbolids;
while ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
symbolids << QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, 0 ) );
}
sqlite3_finalize( ppStmt );
dummy = symbolids.join( ", " );
query = sqlite3_mprintf( "SELECT name FROM %q WHERE id IN (%q)",
item.toUtf8().constData(), dummy.toUtf8().constData() );
nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
while ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
QString symbolName = QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt, 0 ) );
if ( !symbols.contains( symbolName ) )
symbols << symbolName;
}
sqlite3_finalize( ppStmt );
return symbols;
}
bool QgsStyleV2::tagSymbol( StyleEntity type, QString symbol, QStringList tags )
{
if ( !mCurrentDB )
{
QgsDebugMsg( "Sorry! Cannot open database to tag." );
return false;
}
int symbolid = type == SymbolEntity ? symbolId( symbol ) : colorrampId( symbol );
if ( !symbolid )
{
QgsDebugMsg( "No such symbol for tagging in database: " + symbol );
return false;
}
foreach ( const QString &tag, tags )
{
// sql: gets the id of the tag if present or insert the tag and get the id of the tag
char *query = sqlite3_mprintf( "SELECT id FROM tag WHERE name='%q'", tag.toUtf8().constData() );
sqlite3_stmt *ppStmt;
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
int tagid;
if ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
tagid = sqlite3_column_int( ppStmt, 0 );
}
else
{
tagid = addTag( tag );
}
sqlite3_finalize( ppStmt );
// Now map the tag to the symbol
query = type == SymbolEntity
? sqlite3_mprintf( "INSERT INTO tagmap VALUES (%d,%d)", tagid, symbolid )
: sqlite3_mprintf( "INSERT INTO ctagmap VALUES (%d,%d)", tagid, symbolid );
char *zErr = 0;
nErr = sqlite3_exec( mCurrentDB, query, NULL, NULL, &zErr );
if ( nErr )
{
QgsDebugMsg( zErr );
}
}
return true;
}
bool QgsStyleV2::detagSymbol( StyleEntity type, QString symbol, QStringList tags )
{
if ( !mCurrentDB )
{
QgsDebugMsg( "Sorry! Cannot open database for detgging." );
return false;
}
char *query = type == SymbolEntity
? sqlite3_mprintf( "SELECT id FROM symbol WHERE name='%q'", symbol.toUtf8().constData() )
: sqlite3_mprintf( "SELECT id FROM colorramp WHERE name='%q'", symbol.toUtf8().constData() );
sqlite3_stmt *ppStmt;
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
int symbolid = 0;
if ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
symbolid = sqlite3_column_int( ppStmt, 0 );
}
sqlite3_finalize( ppStmt );
foreach ( const QString &tag, tags )
{
query = sqlite3_mprintf( "SELECT id FROM tag WHERE name='%q'", tag.toUtf8().constData() );
sqlite3_stmt *ppStmt2;
nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt2, NULL );
int tagid = 0;
if ( nErr == SQLITE_OK && sqlite3_step( ppStmt2 ) == SQLITE_ROW )
{
tagid = sqlite3_column_int( ppStmt2, 0 );
}
sqlite3_finalize( ppStmt2 );
if ( tagid )
{
// remove from the tagmap
query = type == SymbolEntity
? sqlite3_mprintf( "DELETE FROM tagmap WHERE tag_id=%d AND symbol_id=%d", tagid, symbolid )
: sqlite3_mprintf( "DELETE FROM ctagmap WHERE tag_id=%d AND colorramp_id=%d", tagid, symbolid );
runEmptyQuery( query );
}
}
// TODO Perform tag cleanup
// check the number of entries for a given tag in the tagmap
// if the count is 0, then remove( TagEntity, tagid )
return true;
}
QStringList QgsStyleV2::tagsOfSymbol( StyleEntity type, QString symbol )
{
if ( !mCurrentDB )
{
QgsDebugMsg( "Sorry! Cannot open database for getting the tags." );
return QStringList();
}
int symbolid = type == SymbolEntity ? symbolId( symbol ) : colorrampId( symbol );
if ( !symbolid )
return QStringList();
// get the ids of tags for the symbol
char *query = type == SymbolEntity
? sqlite3_mprintf( "SELECT tag_id FROM tagmap WHERE symbol_id=%d", symbolid )
: sqlite3_mprintf( "SELECT tag_id FROM ctagmap WHERE colorramp_id=%d", symbolid );
sqlite3_stmt *ppStmt;
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
QStringList tagList;
while ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
char *subquery = sqlite3_mprintf( "SELECT name FROM tag WHERE id=%d", sqlite3_column_int( ppStmt, 0 ) );
sqlite3_stmt *ppStmt2;
int pErr = sqlite3_prepare_v2( mCurrentDB, subquery, -1, &ppStmt2, NULL );
if ( pErr == SQLITE_OK && sqlite3_step( ppStmt2 ) == SQLITE_ROW )
{
tagList << QString::fromUtf8(( const char * ) sqlite3_column_text( ppStmt2, 0 ) );
}
sqlite3_finalize( ppStmt2 );
}
sqlite3_finalize( ppStmt );
return tagList;
}
int QgsStyleV2::getId( QString table, QString name )
{
char *query = sqlite3_mprintf( "SELECT id FROM %q WHERE name='%q'", table.toUtf8().constData(), name.toUtf8().constData() );
sqlite3_stmt *ppStmt;
int nErr = sqlite3_prepare_v2( mCurrentDB, query, -1, &ppStmt, NULL );
int id = 0;
if ( nErr == SQLITE_OK && sqlite3_step( ppStmt ) == SQLITE_ROW )
{
id = sqlite3_column_int( ppStmt, 0 );
}
sqlite3_finalize( ppStmt );
return id;
}
int QgsStyleV2::symbolId( QString name )
{
return getId( "symbol", name );
}
int QgsStyleV2::colorrampId( QString name )
{
return getId( "colorramp", name );
}
int QgsStyleV2::groupId( QString name )
{
return getId( "symgroup", name );