void Renderer::sliceTile(const shared_ptr<MetaTile>& meta, const shared_ptr<Tile>& tile) const
{
const shared_ptr<MetaIdentifier>& mid = meta->getIdentifier();
const Cairo::RefPtr<Cairo::Surface>& surface = meta->getData();
int tx0 = mid->getX();
int ty0 = mid->getY();
surface->flush();
shared_ptr<ImageWriter> writer = getWriter(mid->getImageFormat(), TILE_SIZE, TILE_SIZE);
Tile::ImageType buffer = boost::make_shared<Tile::ImageType::element_type>();
// optimized for png images in the default stylesheet
buffer->reserve(10*1024);
CairoLayer layer = CairoLayer(writer, buffer);
const shared_ptr<TileIdentifier>& tid = tile->getIdentifier();
int dx = (tid->getX() - tx0) * TILE_SIZE;
int dy = (tid->getY() - ty0) * TILE_SIZE;
layer.cr->set_source(surface, -dx, -dy);
layer.cr->paint();
#if DEBUG_BUILD
printTileId(layer.cr, tile->getIdentifier());
#endif
writer->write(layer.surface);
tile->setImage(buffer);
}
void Renderer::renderEmptyTile(RenderAttributes& map, const shared_ptr<Tile>& tile)
{
const shared_ptr<TileIdentifier>& id = tile->getIdentifier();
shared_ptr<ImageWriter> writer = getWriter(id->getImageFormat(), TILE_SIZE, TILE_SIZE);
Tile::ImageType buffer = boost::make_shared<Tile::ImageType::element_type>();
// optimized for png images in the default stylesheet
buffer->reserve(10*1024);
#if OLD_CAIRO
renderLock.lock();
#endif
CairoLayer layer(writer, buffer);
paintBackground(layer, map.getCanvasStyle());
#if DEBUG_BUILD
printTileId(layer.cr, tile->getIdentifier());
#endif
#if OLD_CAIRO
renderLock.unlock();
#endif
writer->write(layer.surface);
tile->setImage(buffer);
}