DataFetcher Class Reference

Collaboration diagram for DataFetcher:

Public Member Functions
	DataFetcher (Layer::Ptr layer, int height, int horTileCount, int verTileCount, SourcePresentation::Ptr sp, ThreadPool::WeakQueue::Ptr queue, std::function< void()> on_finished)
	DataFetcher. More...
void	operator() ()

Private Attributes
Layer::Ptr	layer
int	height
int	horTileCount
int	verTileCount
int	currentRow {0}
SourcePresentation::Ptr	sp
ThreadPool::Ptr	threadPool
ThreadPool::WeakQueue::Ptr	queue
std::function< void()>	on_finished

Constructor & Destructor Documentation

DataFetcher()

DataFetcher::DataFetcher	(	Layer::Ptr	layer,
		int	height,
		int	horTileCount,
		int	verTileCount,
		SourcePresentation::Ptr	sp,
		ThreadPool::WeakQueue::Ptr	queue,
		std::function< void()>	on_finished
	)

DataFetcher.

  : layer(std::move(layer_))
  , height(height_)
  , horTileCount(horTileCount_)
  , verTileCount(verTileCount_)
  , sp(std::move(sp_))
  , threadPool(CpuBound())
  , queue(std::move(queue_))
  , on_finished(std::move(on_finished_))
{
}

Member Function Documentation

operator()()

void DataFetcher::operator()

(

)

{
  QueueJumper::Ptr const qj = QueueJumper::create();
 
  threadPool->schedule(qj, REDUCE_PRIO, queue);
 
  CompressedTileLine&    tileLine = layer->getTileLine(currentRow);
  std::vector<Tile::Ptr> tiles;
  for(int x = 0; x < horTileCount; x++)
  {
    CompressedTile::Ptr const  ti = tileLine[x];
    Scroom::Utils::Stuff const s  = ti->initialize();
    tiles.push_back(ti->getTileSync());
  }
  const int lineCount = std::min(TILESIZE, height - currentRow * TILESIZE);
 
  sp->fillTiles(currentRow * TILESIZE, lineCount, TILESIZE, 0, tiles);
 
  for(int x = 0; x < horTileCount; x++)
  {
    tileLine[x]->reportFinished();
  }
 
  currentRow++;
  if(currentRow < verTileCount)
  {
    DataFetcher const successor(*this);
    if(!qj->setWork(successor))
    {
      threadPool->schedule(successor, DATAFETCH_PRIO, queue);
    }
  }
  else
  {
    sp->done();
    on_finished();
  }
}

Here is the call graph for this function:

Member Data Documentation

currentRow

int DataFetcher::currentRow {0}

private

Referenced by operator()().

height

int DataFetcher::height

private

Referenced by operator()().

horTileCount

int DataFetcher::horTileCount

private

Referenced by operator()().

layer

Layer::Ptr DataFetcher::layer

private

Referenced by operator()().

on_finished

std::function<void()> DataFetcher::on_finished

private

Referenced by operator()().

queue

ThreadPool::WeakQueue::Ptr DataFetcher::queue

private

Referenced by operator()().

sp

SourcePresentation::Ptr DataFetcher::sp

private

Referenced by operator()().

threadPool

ThreadPool::Ptr DataFetcher::threadPool

private

Referenced by operator()().

verTileCount

int DataFetcher::verTileCount

private

Referenced by operator()().

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The documentation for this class was generated from the following file:

• libs/tiled-bitmap/src/layer.cc