TileObserver (Java SE 14 & JDK 14)
Description: declaration: module: java.desktop, package: java.awt.image, interface: TileObserver
Keywords: java.awt.image.TileObserver interface

Module java.desktop
Package java.awt.image

# Interface TileObserver

    public interface TileObserver

An interface for objects that wish to be informed when tiles of a WritableRenderedImage become modifiable by some writer via a call to getWritableTile, and when they become unmodifiable via the last call to releaseWritableTile.

See Also:
  `WritableRenderedImage`

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `void` | `tileUpdate​(WritableRenderedImage source, int tileX, int tileY, boolean willBeWritable)` | A tile is about to be updated (it is either about to be grabbed for writing, or it is being released from writing).

- ## Method Details

  - ### tileUpdate

    void tileUpdate​(WritableRenderedImage source, int tileX, int tileY, boolean willBeWritable)
    A tile is about to be updated (it is either about to be grabbed for writing, or it is being released from writing).
    Parameters:
      `source` - the image that owns the tile.
      `tileX` - the X index of the tile that is being updated.
      `tileY` - the Y index of the tile that is being updated.
      `willBeWritable` - If true, the tile will be grabbed for writing; otherwise it is being released.