void QgsHttpRequestHandler::setGetMapResponse( const QString& service, QImage* img, int imageQuality = -1 )
{
Q_UNUSED( service );
QgsMessageLog::logMessage( "setting getmap response..." );
if ( img )
{
bool png16Bit = ( mFormatString.compare( "image/png; mode=16bit", Qt::CaseInsensitive ) == 0 );
bool png8Bit = ( mFormatString.compare( "image/png; mode=8bit", Qt::CaseInsensitive ) == 0 );
bool png1Bit = ( mFormatString.compare( "image/png; mode=1bit", Qt::CaseInsensitive ) == 0 );
bool isBase64 = mFormatString.endsWith( ";base64", Qt::CaseInsensitive );
if ( mFormat != "PNG" && mFormat != "JPG" && !png16Bit && !png8Bit && !png1Bit )
{
QgsMessageLog::logMessage( "service exception - incorrect image format requested..." );
setServiceException( QgsMapServiceException( "InvalidFormat", "Output format '" + mFormatString + "' is not supported in the GetMap request" ) );
return;
}
//store the image in a QByteArray and set it directly
QByteArray ba;
QBuffer buffer( &ba );
buffer.open( QIODevice::WriteOnly );
// Do not use imageQuality for PNG images
// For now, QImage expects quality to be a range 0-9 for PNG
if ( mFormat == "PNG" )
{
imageQuality = -1;
}
if ( png8Bit )
{
QVector<QRgb> colorTable;
medianCut( colorTable, 256, *img );
QImage palettedImg = img->convertToFormat( QImage::Format_Indexed8, colorTable, Qt::ColorOnly | Qt::ThresholdDither |
Qt::ThresholdAlphaDither | Qt::NoOpaqueDetection );
palettedImg.save( &buffer, "PNG", imageQuality );
}
else if ( png16Bit )
{
QImage palettedImg = img->convertToFormat( QImage::Format_ARGB4444_Premultiplied );
palettedImg.save( &buffer, "PNG", imageQuality );
}
else if ( png1Bit )
{
QImage palettedImg = img->convertToFormat( QImage::Format_Mono, Qt::MonoOnly | Qt::ThresholdDither |
Qt::ThresholdAlphaDither | Qt::NoOpaqueDetection );
palettedImg.save( &buffer, "PNG", imageQuality );
}
else
{
img->save( &buffer, mFormat.toUtf8().data(), imageQuality );
}
if ( isBase64 )
{
ba = ba.toBase64();
}
setHttpResponse( &ba, formatToMimeType( mFormat ) );
}
}
void QgsHttpRequestHandler::setGetPrintResponse( QByteArray* ba )
{
if ( mFormatString.endsWith( ";base64", Qt::CaseInsensitive ) )
{
*ba = ba->toBase64();
}
setHttpResponse( ba, formatToMimeType( mFormat ) );
}
void QgsGetRequestHandler::sendGetMapResponse( const QString& service, QImage* img ) const
{
if ( img )
{
if ( mFormat != "PNG" && mFormat != "JPG" )
{
sendServiceException( QgsMapServiceException( "InvalidFormat", "Output format '" + mFormat + "' is not supported in the GetMap request" ) );
return;
}
//store the image in a QByteArray and send it directly
QByteArray ba;
QBuffer buffer( &ba );
buffer.open( QIODevice::WriteOnly );
img->save( &buffer, mFormat.toLocal8Bit().data(), -1 );
sendHttpResponse( &ba, formatToMimeType( mFormat ) );
}
}
void QgsGetRequestHandler::sendGetPrintResponse( QByteArray* ba ) const
{
sendHttpResponse( ba, formatToMimeType( mFormat ) );
}
