TilesProvider.java :  » Map » maps-minus » coderminus » maps » Android Open Source

package coderminus.maps;

import android.content.Context;
import android.graphics.Bitmap;
import android.os.Handler;

public class TilesProvider 
{
  private TilesCache        inMemoryTilesCache;
  private ResizedTilesCache resizedTilesCache = null;
  private InFileTilesCache  inFileTilesCache  = null;
  private RemoteTileLoader  remoteTileLoader  = null;
  
  public TilesProvider(Context context, Handler handler, TileQueueSizeWatcher sizeWatcher)
  {
    inMemoryTilesCache = new TilesCache       (context, handler, sizeWatcher);
    inFileTilesCache   = new InFileTilesCache (inMemoryTilesCache, handler);
    remoteTileLoader   = new RemoteTileLoader (inFileTilesCache  , handler);
    resizedTilesCache  = new ResizedTilesCache(inFileTilesCache  , handler); 
  }

  public Bitmap getTileBitmap(Tile tile) 
  {
    if(inMemoryTilesCache.hasTile(tile.key))
    {
      return inMemoryTilesCache.getTileBitmap(tile.key);
    }
  
    if(inFileTilesCache.hasTile(tile.key))
    {
      inFileTilesCache.queueTileRequest(tile);
      return null;
    }
    
    remoteTileLoader.queueTileRequest(tile);

    if(resizedTilesCache.hasTile(tile)) 
    {
      return resizedTilesCache.getTileBitmap(tile);
    }
    
    if(inFileTilesCache.getCandidateForResize(tile.zoom, tile.mapX, tile.mapY) != null)
    {
      resizedTilesCache.queueResize(new ResizeTile(tile.key, tile.mapX, tile.mapY, tile.zoom));
    }
    
    return null;
  }
  
  public void clearCache() 
  {
    inMemoryTilesCache.clean();
  }

  public void removeTile(Tile tile) 
  {
    inFileTilesCache.removeCachedTile(tile);
  }

  public void clearResizeCache() 
  {
    resizedTilesCache.clear();
  }

  public void setCachePath(String cachePath) 
  {
    inFileTilesCache.setCachePath(cachePath);
  }

  public void setTilePostfix(String tilePostfix) 
  {
    inFileTilesCache.setTilePostfix(tilePostfix);
  }
}