QImage TileLoader::scaledLowerLevelTile( const GeoSceneTextureTile * textureLayer, TileId const & id )
{
mDebug() << Q_FUNC_INFO << id;
for ( int level = qMax<int>( 0, id.zoomLevel() - 1 ); level >= 0; --level ) {
int const deltaLevel = id.zoomLevel() - level;
TileId const replacementTileId( id.mapThemeIdHash(), level,
id.x() >> deltaLevel, id.y() >> deltaLevel );
QString const fileName = tileFileName( textureLayer, replacementTileId );
mDebug() << "TileLoader::scaledLowerLevelTile" << "trying" << fileName;
QImage toScale = QFile::exists(fileName) ? QImage(fileName) : QImage();
if ( level == 0 && toScale.isNull() ) {
mDebug() << "No level zero tile installed in map theme dir. Falling back to a transparent image for now.";
QSize tileSize = textureLayer->tileSize();
Q_ASSERT( !tileSize.isEmpty() ); // assured by textureLayer
toScale = QImage( tileSize, QImage::Format_ARGB32_Premultiplied );
toScale.fill( qRgba( 0, 0, 0, 0 ) );
}
if ( !toScale.isNull() ) {
// which rect to scale?
int const restTileX = id.x() % ( 1 << deltaLevel );
int const restTileY = id.y() % ( 1 << deltaLevel );
int const partWidth = qMax(1, toScale.width() >> deltaLevel);
int const partHeight = qMax(1, toScale.height() >> deltaLevel);
int const startX = restTileX * partWidth;
int const startY = restTileY * partHeight;
mDebug() << "QImage::copy:" << startX << startY << partWidth << partHeight;
QImage const part = toScale.copy( startX, startY, partWidth, partHeight );
mDebug() << "QImage::scaled:" << toScale.size();
return part.scaled( toScale.size() );
}
}
void TileLoader::triggerDownload( GeoSceneTileDataset const *tileData, TileId const &id, DownloadUsage const usage )
{
if (id.zoomLevel() > 0 && id.zoomLevel() != qBound(tileData->minimumTileLevel(), id.zoomLevel(), tileData->maximumTileLevel())) {
// Download only level 0 tiles and tiles between minimum and maximum tile level
return;
}
QUrl const sourceUrl = tileData->downloadUrl( id );
QString const destFileName = tileData->relativeTileFileName( id );
QString const idStr = QString( "%1:%2:%3:%4:%5" ).arg( tileData->nodeType()).arg( tileData->sourceDir() ).arg( id.zoomLevel() ).arg( id.x() ).arg( id.y() );
emit downloadTile( sourceUrl, destFileName, idStr, usage );
}
void StackedTileLoader::updateTile( TileId const &tileId, QImage const &tileImage )
{
Q_ASSERT( !tileImage.isNull() );
d->detectMaxTileLevel();
const TileId stackedTileId( 0, tileId.zoomLevel(), tileId.x(), tileId.y() );
StackedTile * displayedTile = d->m_tilesOnDisplay.take( stackedTileId );
if ( displayedTile ) {
Q_ASSERT( !d->m_tileCache.contains( stackedTileId ) );
QVector<QSharedPointer<TextureTile> > tiles = displayedTile->tiles();
delete displayedTile;
displayedTile = 0;
for ( int i = 0; i < tiles.count(); ++ i) {
if ( tiles[i]->id() == tileId ) {
const Blending *blending = tiles[i]->blending();
tiles[i] = QSharedPointer<TextureTile>( new TextureTile( tileId, tileImage, blending ) );
}
}
const QImage resultImage = d->m_layerDecorator.merge( stackedTileId, tiles );
displayedTile = new StackedTile( stackedTileId, resultImage, tiles );
d->m_tilesOnDisplay.insert( stackedTileId, displayedTile );
emit tileUpdateAvailable( stackedTileId );
} else {
d->m_tileCache.remove( stackedTileId );
}
}
QUrl TmsServerLayout::downloadUrl( const QUrl &prototypeUrl, const TileId &id ) const
{
const QString suffix = m_textureLayer->fileFormat().toLower();
// y coordinate in TMS start at the bottom of the map (South) and go upwards,
// opposed to OSM which start at the top.
//
// http://wiki.osgeo.org/wiki/Tile_Map_Service_Specification
int y_frombottom = ( 1<<id.zoomLevel() ) - id.y() - 1 ;
const QString path = QString( "%1/%2/%3.%4" ).arg( id.zoomLevel() )
.arg( id.x() )
.arg( y_frombottom )
.arg( suffix );
QUrl url = prototypeUrl;
url.setPath( url.path() + path );
return url;
}
void StackedTileLoader::downloadTile( TileId const & stackedTileId )
{
QVector<GeoSceneTexture const *> const textureLayers = d->findRelevantTextureLayers( stackedTileId );
QVector<GeoSceneTexture const *>::const_iterator pos = textureLayers.constBegin();
QVector<GeoSceneTexture const *>::const_iterator const end = textureLayers.constEnd();
for (; pos != end; ++pos ) {
GeoSceneTexture const * const textureLayer = *pos;
TileId const tileId( textureLayer->sourceDir(), stackedTileId.zoomLevel(),
stackedTileId.x(), stackedTileId.y() );
d->m_tileLoader->downloadTile( tileId );
}
}
QUrl OsmServerLayout::downloadUrl( const QUrl &prototypeUrl, const TileId &id ) const
{
const QString suffix = m_textureLayer->fileFormat().toLower();
const QString path = QString( "%1/%2/%3.%4" ).arg( id.zoomLevel() )
.arg( id.x() )
.arg( id.y() )
.arg( suffix );
QUrl url = prototypeUrl;
url.setPath( url.path() + path );
return url;
}
QString GeoSceneTileDataset::relativeTileFileName( const TileId &id ) const
{
const QString suffix = fileFormat().toLower();
QString relFileName;
switch ( m_storageLayoutMode ) {
default:
mDebug() << Q_FUNC_INFO << "Invalid storage layout mode! Falling back to default.";
case GeoSceneTileDataset::Marble:
relFileName = QString( "%1/%2/%3/%3_%4.%5" )
.arg( themeStr() )
.arg( id.zoomLevel() )
.arg( id.y(), tileDigits, 10, QChar('0') )
.arg( id.x(), tileDigits, 10, QChar('0') )
.arg( suffix );
break;
case GeoSceneTileDataset::OpenStreetMap:
relFileName = QString( "%1/%2/%3/%4.%5" )
.arg( themeStr() )
.arg( id.zoomLevel() )
.arg( id.x() )
.arg( id.y() )
.arg( suffix );
break;
case GeoSceneTileDataset::TileMapService:
relFileName = QString( "%1/%2/%3/%4.%5" )
.arg( themeStr() )
.arg( id.zoomLevel() )
.arg( id.x() )
.arg( ( 1<<id.zoomLevel() ) - id.y() - 1 ) //Y coord in TMS runs from bottom to top
.arg( suffix );
break;
}
return relFileName;
}
QUrl MarbleServerLayout::downloadUrl( const QUrl &prototypeUrl, const TileId &id ) const
{
const QString path = QString( "%1maps/%2/%3/%4/%4_%5.%6" )
.arg( prototypeUrl.path() )
.arg( m_textureLayer->sourceDir() )
.arg( id.zoomLevel() )
.arg( id.y(), tileDigits, 10, QChar('0') )
.arg( id.x(), tileDigits, 10, QChar('0') )
.arg( m_textureLayer->fileFormat().toLower() );
QUrl url = prototypeUrl;
url.setPath( path );
return url;
}
void StackedTileLoader::updateTile( TileId const &tileId, QImage const &tileImage )
{
const TileId stackedTileId( 0, tileId.zoomLevel(), tileId.x(), tileId.y() );
StackedTile * displayedTile = d->m_tilesOnDisplay.take( stackedTileId );
if ( displayedTile ) {
Q_ASSERT( !d->m_tileCache.contains( stackedTileId ) );
StackedTile *const stackedTile = d->m_layerDecorator->updateTile( *displayedTile, tileId, tileImage );
stackedTile->setUsed( true );
d->m_tilesOnDisplay.insert( stackedTileId, stackedTile );
delete displayedTile;
displayedTile = 0;
emit tileLoaded( stackedTileId );
} else {
d->m_tileCache.remove( stackedTileId );
}
}
QUrl CustomServerLayout::downloadUrl( const QUrl &prototypeUrl, const TileId &id ) const
{
const GeoDataLatLonBox bbox = id.toLatLonBox( m_textureLayer );
#if QT_VERSION < 0x050000
QString urlStr = prototypeUrl.toString();
#else
QString urlStr = prototypeUrl.toString( QUrl::DecodeReserved );
#endif
urlStr.replace( "{zoomLevel}", QString::number( id.zoomLevel() ) );
urlStr.replace( "{x}", QString::number( id.x() ) );
urlStr.replace( "{y}", QString::number( id.y() ) );
urlStr.replace( "{west}", QString::number( bbox.west( GeoDataCoordinates::Degree ), 'f', 12 ) );
urlStr.replace( "{south}", QString::number( bbox.south( GeoDataCoordinates::Degree ), 'f', 12 ) );
urlStr.replace( "{east}", QString::number( bbox.east( GeoDataCoordinates::Degree ), 'f', 12 ) );
urlStr.replace( "{north}", QString::number( bbox.north( GeoDataCoordinates::Degree ), 'f', 12 ) );
return QUrl( urlStr );
}
QVector<GeoSceneTexture const *>
StackedTileLoaderPrivate::findRelevantTextureLayers( TileId const & stackedTileId ) const
{
QVector<GeoSceneTexture const *> result;
QVector<GeoSceneTexture const *>::const_iterator pos = m_textureLayers.constBegin();
QVector<GeoSceneTexture const *>::const_iterator const end = m_textureLayers.constEnd();
for (; pos != end; ++pos ) {
GeoSceneTexture const * const candidate = dynamic_cast<GeoSceneTexture const *>( *pos );
// check if layer is enabled. A layer is considered to be enabled if one of the
// following conditions is true:
// 1) it is the first layer
// 2) there are no settings available (group "Texture Layers" not defined in DGML)
// 3) the layer is configured and enabled in the settings
// also check, if layer provides tiles for the current level
if ( candidate
&& ( !candidate->hasMaximumTileLevel()
|| stackedTileId.zoomLevel() <= candidate->maximumTileLevel() ))
result.append( candidate );
}
return result;
}
void TileLoader::triggerDownload( GeoSceneTiled const *textureLayer, TileId const &id, DownloadUsage const usage )
{
QUrl const sourceUrl = textureLayer->downloadUrl( id );
QString const destFileName = textureLayer->relativeTileFileName( id );
QString const idStr = QString( "%1:%2:%3:%4" ).arg( textureLayer->sourceDir() ).arg( id.zoomLevel() ).arg( id.x() ).arg( id.y() );
emit downloadTile( sourceUrl, destFileName, idStr, usage );
}
void SunLightBlending::blend( QImage * const tileImage, Tile const * const top ) const
{
if ( tileImage->depth() != 32 )
return;
// TODO add support for 8-bit maps?
// add sun shading
const TileId id = top->id();
const qreal global_width = tileImage->width()
* TileLoaderHelper::levelToColumn( m_levelZeroColumns, id.zoomLevel() );
const qreal global_height = tileImage->height()
* TileLoaderHelper::levelToRow( m_levelZeroRows, id.zoomLevel() );
const qreal lon_scale = 2*M_PI / global_width;
const qreal lat_scale = -M_PI / global_height;
const int tileHeight = tileImage->height();
const int tileWidth = tileImage->width();
// First we determine the supporting point interval for the interpolation.
const int n = maxDivisor( 30, tileWidth );
const int ipRight = n * (int)( tileWidth / n );
const QImage *nighttile = top->image();
for ( int cur_y = 0; cur_y < tileHeight; ++cur_y ) {
const qreal lat = lat_scale * ( id.y() * tileHeight + cur_y ) - 0.5*M_PI;
const qreal a = sin( ( lat+DEG2RAD * m_sunLocator->getLat() )/2.0 );
const qreal c = cos(lat)*cos( -DEG2RAD * m_sunLocator->getLat() );
QRgb* scanline = (QRgb*)tileImage->scanLine( cur_y );
const QRgb* nscanline = (QRgb*)nighttile->scanLine( cur_y );
qreal lastShade = -10.0;
int cur_x = 0;
while ( cur_x < tileWidth ) {
const bool interpolate = ( cur_x != 0 && cur_x < ipRight && cur_x + n < tileWidth );
qreal shade = 0;
if ( interpolate ) {
const int check = cur_x + n;
const qreal checklon = lon_scale * ( id.x() * tileWidth + check );
shade = m_sunLocator->shading( checklon, a, c );
// if the shading didn't change across the interpolation
// interval move on and don't change anything.
if ( shade == lastShade && shade == 1.0 ) {
scanline += n;
nscanline += n;
cur_x += n;
continue;
}
if ( shade == lastShade && shade == 0.0 ) {
for ( int t = 0; t < n; ++t ) {
m_sunLocator->shadePixelComposite( *scanline, *nscanline, shade );
++scanline;
++nscanline;
}
cur_x += n;
continue;
}
for ( int t = 0; t < n ; ++t ) {
qreal lon = lon_scale * ( id.x() * tileWidth + cur_x );
shade = m_sunLocator->shading( lon, a, c );
m_sunLocator->shadePixelComposite( *scanline, *nscanline, shade );
++scanline;
++nscanline;
++cur_x;
}
}
else {
// Make sure we don't exceed the image memory
if ( cur_x < tileWidth ) {
qreal lon = lon_scale * ( id.x() * tileWidth + cur_x );
shade = m_sunLocator->shading( lon, a, c );
m_sunLocator->shadePixelComposite( *scanline, *nscanline, shade );
++scanline;
++nscanline;
++cur_x;
}
}
lastShade = shade;
}
}
}
void MergedLayerDecorator::paintTileId( QImage *tileImage, const TileId &id ) const
{
QString filename = QString( "%1_%2.jpg" )
.arg( id.x(), tileDigits, 10, QChar('0') )
.arg( id.y(), tileDigits, 10, QChar('0') );
QPainter painter( tileImage );
QColor foreground;
QColor background;
if ( ( (qreal)(id.x())/2 == id.x()/2 && (qreal)(id.y())/2 == id.y()/2 )
|| ( (qreal)(id.x())/2 != id.x()/2 && (qreal)(id.y())/2 != id.y()/2 )
)
{
foreground.setNamedColor( "#FFFFFF" );
background.setNamedColor( "#000000" );
}
else {
foreground.setNamedColor( "#000000" );
background.setNamedColor( "#FFFFFF" );
}
int strokeWidth = 10;
QPen testPen( foreground );
testPen.setWidth( strokeWidth );
testPen.setJoinStyle( Qt::MiterJoin );
painter.setPen( testPen );
painter.drawRect( strokeWidth / 2, strokeWidth / 2,
tileImage->width() - strokeWidth,
tileImage->height() - strokeWidth );
QFont testFont( "Sans", 12 );
QFontMetrics testFm( testFont );
painter.setFont( testFont );
QPen outlinepen( foreground );
outlinepen.setWidthF( 6 );
painter.setPen( outlinepen );
painter.setBrush( background );
QPainterPath outlinepath;
QPointF baseline1( ( tileImage->width() - testFm.boundingRect(filename).width() ) / 2,
( tileImage->height() * 0.25) );
outlinepath.addText( baseline1, testFont, QString( "level: %1" ).arg(id.zoomLevel()) );
QPointF baseline2( ( tileImage->width() - testFm.boundingRect(filename).width() ) / 2,
tileImage->height() * 0.50 );
outlinepath.addText( baseline2, testFont, filename );
QPointF baseline3( ( tileImage->width() - testFm.boundingRect(filename).width() ) / 2,
tileImage->height() * 0.75 );
outlinepath.addText( baseline3, testFont, m_themeId );
painter.drawPath( outlinepath );
painter.setPen( Qt::NoPen );
painter.drawPath( outlinepath );
}