public LoadingTile(ITaskHandle taskHandle, Tile tile)
{
this.taskHandle = taskHandle;
this.tile = tile;
}
public TileHandle GetTile(int index, int priority)
{
if(index < 0) {
string message = "The specified index cannot be less than 0.";
throw new ArgumentException(message, "index");
}
LoadingTile loadingTile = null;
// Check to see if the tile is already loaded or is currently loading
lock(SyncRoot) {
if(tiles.Contains(index)) {
if(releasedTiles.Contains(index))
releasedTiles.Remove(index);
return new TileHandle(tiles[index]);
} else if(loadingTiles.Contains(index)) {
loadingTile = loadingTiles[index];
taskThread.PromoteTask(loadingTile.taskHandle, priority);
return new TileHandle(loadingTile.tile);
}
}
// Load the tile
Tile tile = new Tile(tileType, index);
EventHandler tile_Release = delegate(object sender, EventArgs args) {
Tile senderTile = (Tile)sender;
if(senderTile.Loaded) {
// Add the tile to the disposal queue
lock(SyncRoot) releasedTiles.Add(senderTile.Index);
} else {
// The tile was released prematurely
lock(SyncRoot) {
try {
LoadingTile senderLoadingTile = loadingTiles[senderTile.Index];
taskThread.CancelTask(senderLoadingTile.taskHandle);
loadingTiles.Remove(senderTile.Index);
} catch(NoSuchItemException) {
Debug.Fail("Prematurely released tile could not be found in the " +
"loadingTiles collection.");
}
}
}
};
EventHandler tile_Load = delegate(object sender, EventArgs args) {
Tile senderTile = (Tile)sender;
lock(SyncRoot) {
loadingTiles.Remove(senderTile.Index);
if(tiles.Contains(senderTile.Index)) {
if(tiles[senderTile.Index].Refcount != 0) {
Debug.Fail("A tile has been loaded twice, but the second copy cannot be" +
" disposed because it is in use.");
} else tiles[senderTile.Index].Dispose();
}
tiles[senderTile.Index] = senderTile;
}
};
tile.Release += tile_Release;
tile.Load += tile_Load;
ITaskHandle taskHandle = taskThread.AddTask(
delegate() { return graphicLoader.LoadGraphic(index); },
delegate(object arg) { tile.Create((Image)arg); },
priority);
loadingTile = new LoadingTile(taskHandle, tile);
lock(SyncRoot) loadingTiles.Add(tile.Index, loadingTile);
return new TileHandle(tile);
}
internal TileHandle(Tile tile)
{
this.tile = tile;
++tile.Refcount;
}
public TileManager(TileType tileType, string sourceTag, int sourceCount)
{
ReleaseTimerTick += delegate(object sender, EventArgs args) { ReleaseTiles(); };
this.tileType = tileType;
// TODO: Clean up the API for this shit?
string dataPath = Settings.Global.Default.DataPath;
string archivePath = Path.Combine(dataPath, "tile.dat");
string paletteCollectionName = sourceTag + "." + PaletteCollection.FileExtension,
paletteTableName = sourceTag + "." + PaletteTable.FileExtension;
PaletteCollection paletteCollection;
PaletteTable paletteTable;
using(FileStream archiveStream = new FileStream(archivePath, FileMode.Open)) {
ArchiveHeader archive = new ArchiveHeader(archiveStream);
archiveStream.Seek(archive.GetEntry(paletteCollectionName).Offset, SeekOrigin.Begin);
paletteCollection = PaletteCollection.FromStream(archiveStream);
archiveStream.Seek(archive.GetEntry(paletteTableName).Offset, SeekOrigin.Begin);
paletteTable = PaletteTable.FromStream(archiveStream);
}
GraphicLoader.ISourceProvider sourceProvider =
new GraphicLoader.SourceProvider(sourceCount, Path.Combine(dataPath, sourceTag));
graphicLoader = new GraphicLoader(paletteCollection, paletteTable, sourceProvider);
BlankTile = new Tile(tileType, 0);
// Use a clone because the Create method transfers ownership
BlankTile.Create((Image)BlankImage.Clone());
tiles.Add(0, BlankTile);
// Artificially increment the refcount for blankTile so it is never disposed until it
// is garbage collected.
++BlankTile.Refcount;
}
public static void DrawInverted(Tile tile, Graphics graphics, Point point)
{
lock(tile.SyncRoot) {
if(tile.Image != null) GraphicsUtil.DrawImageInverted(graphics, tile.Image, point);
else graphics.FillRectangle(Brushes.Black, new Rectangle(point, Size));
}
}
