Android Open Source - slider Tile

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License

The source code is released under:

Apache License

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Java Source Code

package de.devisnik.android.sliding.tile;
/* w ww.j  a  v  a  2 s .c o m*/
import android.graphics.Canvas;
import android.graphics.Rect;
import de.devisnik.sliding.IPiece;
import de.devisnik.sliding.Point;
import de.devisnik.sliding.animation.IShiftable;

public class Tile implements IShiftable {

  private final IPiece itsPiece;
  private final Point itsPosition;
  private final IPieceDrawer itsDrawer;
  private boolean itsHidden;
  private boolean mDirty = true;
  private final Rect mDirtyRegion;

  public Tile(final IPiece piece, final IPieceDrawer drawer) {
    itsPiece = piece;
    itsDrawer = drawer;
    itsPosition = Point.times(piece.getPosition(), getSize());
    mDirtyRegion = new Rect(itsPosition.x, itsPosition.y, itsPosition.x + itsDrawer.getTileSize().x, itsPosition.y
        + itsDrawer.getTileSize().y);
  }

  @Override
  public Point getSize() {
    return itsDrawer.getTileSize();
  }

  public void setHidden(final boolean value) {
    itsHidden = value;
  }

  @Override
  public void shift(final Point delta) {
    itsPosition.add(delta);
    shiftRect(delta);
    if (delta.x != 0 || delta.y != 0)
      mDirty = true;
  }

  private void shiftRect(final Point delta) {
    mDirtyRegion.union(mDirtyRegion.left + delta.x, mDirtyRegion.top + delta.y);
    mDirtyRegion.union(mDirtyRegion.right + delta.x, mDirtyRegion.bottom + delta.y);
  }

  public boolean isDirty() {
    return mDirty;
  }

  public void draw(final Canvas canvas) {
    mDirtyRegion.set(itsPosition.x, itsPosition.y, itsPosition.x + itsDrawer.getTileSize().x, itsPosition.y
        + itsDrawer.getTileSize().y);
    if (itsHidden)
      return;
    canvas.save();
    canvas.translate(itsPosition.x, itsPosition.y);
    itsDrawer.drawTile(itsPiece, canvas, null);
    canvas.restore();

    mDirty = false;
  }

  public Rect getDirtyRegion() {
    return mDirtyRegion;
  }

}

Java Source Code List