QString createFileFilter_( QString const &format )
{
QString longName = format.toUpper() + " format";
QString glob = "*." + format;
return createFileFilter_( longName, glob );
}
QPair<QString, QString> GUI_EXPORT getSaveAsImageName( QWidget *parent, const QString &message, const QString &defaultFilename )
{
// get a list of supported output image types
QMap<QString, QString> filterMap;
Q_FOREACH ( const QByteArray &format, QImageWriter::supportedImageFormats() )
{
//svg doesn't work so skip it
if ( format == "svg" )
continue;
filterMap.insert( createFileFilter_( format ), format );
}
#ifdef QGISDEBUG
QgsDebugMsg( QStringLiteral( "Available Filters Map: " ) );
for ( QMap<QString, QString>::iterator it = filterMap.begin(); it != filterMap.end(); ++it )
{
QgsDebugMsg( it.key() + " : " + it.value() );
}
#endif
QgsSettings settings; // where we keep last used filter in persistent state
QString lastUsedDir = settings.value( QStringLiteral( "UI/lastSaveAsImageDir" ), QDir::homePath() ).toString();
// Prefer "png" format unless the user previously chose a different format
QString pngExtension = QStringLiteral( "png" );
QString pngFilter = createFileFilter_( pngExtension );
QString selectedFilter = settings.value( QStringLiteral( "UI/lastSaveAsImageFilter" ), pngFilter ).toString();
QString initialPath;
if ( defaultFilename.isNull() )
{
//no default filename provided, just use last directory
initialPath = lastUsedDir;
}
else
{
//a default filename was provided, so use it to build the initial path
initialPath = QDir( lastUsedDir ).filePath( defaultFilename );
}
QString outputFileName;
QString ext;
#if defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(Q_OS_LINUX)
outputFileName = QFileDialog::getSaveFileName( parent, message, initialPath, QStringList( filterMap.keys() ).join( QStringLiteral( ";;" ) ), &selectedFilter );
if ( !outputFileName.isNull() )
{
ext = filterMap.value( selectedFilter, QString() );
if ( !ext.isNull() )
settings.setValue( QStringLiteral( "UI/lastSaveAsImageFilter" ), selectedFilter );
settings.setValue( QStringLiteral( "UI/lastSaveAsImageDir" ), QFileInfo( outputFileName ).absolutePath() );
}
#else
//create a file dialog using the filter list generated above
std::unique_ptr<QFileDialog> fileDialog( new QFileDialog( parent, message, initialPath, QStringList( filterMap.keys() ).join( ";;" ) ) );
// allow for selection of more than one file
fileDialog->setFileMode( QFileDialog::AnyFile );
fileDialog->setAcceptMode( QFileDialog::AcceptSave );
fileDialog->setOption( QFileDialog::DontConfirmOverwrite, false );
if ( !selectedFilter.isEmpty() ) // set the filter to the last one used
{
fileDialog->selectNameFilter( selectedFilter );
}
//prompt the user for a fileName
if ( fileDialog->exec() == QDialog::Accepted )
{
outputFileName = fileDialog->selectedFiles().first();
}
selectedFilter = fileDialog->selectedNameFilter();
QgsDebugMsg( "Selected filter: " + selectedFilter );
ext = filterMap.value( selectedFilter, QString() );
if ( !ext.isNull() )
settings.setValue( "/UI/lastSaveAsImageFilter", selectedFilter );
settings.setValue( "/UI/lastSaveAsImageDir", fileDialog->directory().absolutePath() );
#endif
// Add the file type suffix to the fileName if required
if ( !ext.isNull() && !outputFileName.endsWith( '.' + ext.toLower(), Qt::CaseInsensitive ) )
{
outputFileName += '.' + ext;
}
return qMakePair<QString, QString>( outputFileName, ext );
}
QPair<QString, QString> GUI_EXPORT getSaveAsImageName( QWidget *theParent, QString theMessage, QString defaultFilename )
{
// get a list of supported output image types
QMap<QString, QString> filterMap;
foreach ( QByteArray format, QImageWriter::supportedImageFormats() )
{
//svg doesnt work so skip it
if ( format == "svg" )
continue;
filterMap.insert( createFileFilter_( format.toUpper() + " format", "*." + format ), format );
}
#ifdef QGISDEBUG
QgsDebugMsg( "Available Filters Map: " );
for ( QMap<QString, QString>::iterator it = filterMap.begin(); it != filterMap.end(); ++it )
{
QgsDebugMsg( it.key() + " : " + it.value() );
}
#endif
//find out the last used filter
QSettings settings; // where we keep last used filter in persistent state
QString lastUsedFilter = settings.value( "/UI/lastSaveAsImageFilter" ).toString();
QString lastUsedDir = settings.value( "/UI/lastSaveAsImageDir", "." ).toString();
QString outputFileName;
QString selectedFilter = lastUsedFilter;
QString ext;
QString initialPath;
if ( defaultFilename.isNull() )
{
//no default filename provided, just use last directory
initialPath = lastUsedDir;
}
else
{
//a default filename was provided, so use it to build the initial path
initialPath = QDir( lastUsedDir ).filePath( defaultFilename );
}
#if defined(Q_OS_WIN) || defined(Q_OS_MAC) || defined(Q_OS_LINUX)
outputFileName = QFileDialog::getSaveFileName( theParent, theMessage, initialPath, QStringList( filterMap.keys() ).join( ";;" ), &selectedFilter );
if ( !outputFileName.isNull() )
{
ext = filterMap.value( selectedFilter, QString::null );
if ( !ext.isNull() )
settings.setValue( "/UI/lastSaveAsImageFilter", selectedFilter );
settings.setValue( "/UI/lastSaveAsImageDir", QFileInfo( outputFileName ).absolutePath() );
}
#else
//create a file dialog using the filter list generated above
QScopedPointer<QFileDialog> fileDialog( new QFileDialog( theParent, theMessage, initialPath, QStringList( filterMap.keys() ).join( ";;" ) ) );
// allow for selection of more than one file
fileDialog->setFileMode( QFileDialog::AnyFile );
fileDialog->setAcceptMode( QFileDialog::AcceptSave );
fileDialog->setConfirmOverwrite( true );
if ( !lastUsedFilter.isEmpty() ) // set the filter to the last one used
{
fileDialog->selectNameFilter( lastUsedFilter );
}
//prompt the user for a fileName
if ( fileDialog->exec() == QDialog::Accepted )
{
outputFileName = fileDialog->selectedFiles().first();
}
selectedFilter = fileDialog->selectedFilter();
QgsDebugMsg( "Selected filter: " + selectedFilter );
ext = filterMap.value( selectedFilter, QString::null );
if ( !ext.isNull() )
settings.setValue( "/UI/lastSaveAsImageFilter", selectedFilter );
settings.setValue( "/UI/lastSaveAsImageDir", fileDialog->directory().absolutePath() );
#endif
// Add the file type suffix to the fileName if required
if ( !ext.isNull() && !outputFileName.toLower().endsWith( "." + ext.toLower() ) )
{
outputFileName += "." + ext;
}
return qMakePair<QString, QString>( outputFileName, ext );
}
