QString QgsMapLayer::styleURI( )
{
QString myURI = publicSource();
// if file is using the VSIFILE mechanism, remove the prefix
if ( myURI.startsWith( "/vsigzip/", Qt::CaseInsensitive ) )
{
myURI.remove( 0, 9 );
}
else if ( myURI.startsWith( "/vsizip/", Qt::CaseInsensitive ) &&
myURI.endsWith( ".zip", Qt::CaseInsensitive ) )
{
// ideally we should look for .qml file inside zip file
myURI.remove( 0, 8 );
}
else if ( myURI.startsWith( "/vsitar/", Qt::CaseInsensitive ) &&
( myURI.endsWith( ".tar", Qt::CaseInsensitive ) ||
myURI.endsWith( ".tar.gz", Qt::CaseInsensitive ) ||
myURI.endsWith( ".tgz", Qt::CaseInsensitive ) ) )
{
// ideally we should look for .qml file inside tar file
myURI.remove( 0, 8 );
}
QFileInfo myFileInfo( myURI );
QString key;
if ( myFileInfo.exists() )
{
// if file is using the /vsizip/ or /vsigzip/ mechanism, cleanup the name
if ( myURI.endsWith( ".gz", Qt::CaseInsensitive ) )
myURI.chop( 3 );
else if ( myURI.endsWith( ".zip", Qt::CaseInsensitive ) )
myURI.chop( 4 );
else if ( myURI.endsWith( ".tar", Qt::CaseInsensitive ) )
myURI.chop( 4 );
else if ( myURI.endsWith( ".tar.gz", Qt::CaseInsensitive ) )
myURI.chop( 7 );
else if ( myURI.endsWith( ".tgz", Qt::CaseInsensitive ) )
myURI.chop( 4 );
else if ( myURI.endsWith( ".gz", Qt::CaseInsensitive ) )
myURI.chop( 3 );
myFileInfo.setFile( myURI );
// get the file name for our .qml style file
key = myFileInfo.path() + QDir::separator() + myFileInfo.completeBaseName() + ".qml";
}
else
{
key = publicSource();
}
return key;
}
QString QgsMapLayer::loadDefaultStyle( bool & theResultFlag )
{
QString myURI = publicSource();
QFileInfo myFileInfo( myURI );
QString key;
if ( myFileInfo.exists() )
{
// get the file name for our .qml style file
key = myFileInfo.path() + QDir::separator() + myFileInfo.completeBaseName() + ".qml";
}
else
{
key = myURI;
}
return loadNamedStyle( key, theResultFlag );
}
QString QgsMapLayer::loadNamedStyle( const QString &theURI, bool &theResultFlag )
{
QgsDebugMsg( QString( "uri = %1 myURI = %2" ).arg( theURI ).arg( publicSource() ) );
theResultFlag = false;
QDomDocument myDocument( "qgis" );
// location of problem associated with errorMsg
int line, column;
QString myErrorMessage;
QFile myFile( theURI );
if ( myFile.open( QFile::ReadOnly ) )
{
// read file
theResultFlag = myDocument.setContent( &myFile, &myErrorMessage, &line, &column );
if ( !theResultFlag )
myErrorMessage = tr( "%1 at line %2 column %3" ).arg( myErrorMessage ).arg( line ).arg( column );
myFile.close();
}
else
{
QFileInfo project( QgsProject::instance()->fileName() );
QgsDebugMsg( QString( "project fileName: %1" ).arg( project.absoluteFilePath() ) );
QString qml;
if ( loadNamedStyleFromDb( QDir( QgsApplication::qgisSettingsDirPath() ).absoluteFilePath( "qgis.qmldb" ), theURI, qml ) ||
( project.exists() && loadNamedStyleFromDb( project.absoluteDir().absoluteFilePath( project.baseName() + ".qmldb" ), theURI, qml ) ) ||
loadNamedStyleFromDb( QDir( QgsApplication::pkgDataPath() ).absoluteFilePath( "resources/qgis.qmldb" ), theURI, qml ) )
{
theResultFlag = myDocument.setContent( qml, &myErrorMessage, &line, &column );
if ( !theResultFlag )
{
myErrorMessage = tr( "%1 at line %2 column %3" ).arg( myErrorMessage ).arg( line ).arg( column );
}
}
else
{
myErrorMessage = tr( "style not found in database" );
}
}
if ( !theResultFlag )
{
return myErrorMessage;
}
// get style file version string, if any
QgsProjectVersion fileVersion( myDocument.firstChildElement( "qgis" ).attribute( "version" ) );
QgsProjectVersion thisVersion( QGis::QGIS_VERSION );
if ( thisVersion > fileVersion )
{
QgsLogger::warning( "Loading a style file that was saved with an older "
"version of qgis (saved in " + fileVersion.text() +
", loaded in " + QGis::QGIS_VERSION +
"). Problems may occur." );
QgsProjectFileTransform styleFile( myDocument, fileVersion );
// styleFile.dump();
styleFile.updateRevision( thisVersion );
// styleFile.dump();
}
// now get the layer node out and pass it over to the layer
// to deserialise...
QDomElement myRoot = myDocument.firstChildElement( "qgis" );
if ( myRoot.isNull() )
{
myErrorMessage = tr( "Error: qgis element could not be found in %1" ).arg( theURI );
theResultFlag = false;
return myErrorMessage;
}
// use scale dependent visibility flag
toggleScaleBasedVisibility( myRoot.attribute( "hasScaleBasedVisibilityFlag" ).toInt() == 1 );
setMinimumScale( myRoot.attribute( "minimumScale" ).toFloat() );
setMaximumScale( myRoot.attribute( "maximumScale" ).toFloat() );
#if 0
//read transparency level
QDomNode transparencyNode = myRoot.namedItem( "transparencyLevelInt" );
if ( ! transparencyNode.isNull() )
{
// set transparency level only if it's in project
// (otherwise it sets the layer transparent)
QDomElement myElement = transparencyNode.toElement();
setTransparency( myElement.text().toInt() );
}
#endif
QString errorMsg;
theResultFlag = readSymbology( myRoot, errorMsg );
if ( !theResultFlag )
{
myErrorMessage = tr( "Loading style file %1 failed because:\n%2" ).arg( theURI ).arg( errorMsg );
return myErrorMessage;
}
return "";
}
QString QgsMapLayer::saveDefaultStyle( bool & theResultFlag )
{
return saveNamedStyle( publicSource(), theResultFlag );
}