Android Open Source - slider Frame Drawer

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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;
//from  www  .  j a  va  2s .co m
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.view.SurfaceHolder;
import de.devisnik.android.sliding.tile.Tile;
import de.devisnik.android.sliding.tile.TileStore;
import de.devisnik.sliding.FrameFactory;
import de.devisnik.sliding.IRobotFrame;
import de.devisnik.sliding.Point;

public class FrameDrawer {

  private static final String TAG = "FrameDrawer";
  private final IRobotFrame itsFrame;
  private final Replayer itsReplayer;
  private final TileStore itsTileStore;
  private final FPSCounter mCounter = new FPSCounter();
  private final Rect mFpsDisplayBackArea = new Rect(0, 40, 50, 50);
  private final Paint mBackPaint;
  private final Paint mTextPaint;

  public FrameDrawer(final Settings settings, final int width, final int height, final boolean preview) {
    Point frameSize = settings.getFrameSize(width, height);
    itsFrame = createFrame(frameSize);
    itsTileStore = new TileStore(width, height, settings, itsFrame);
    itsReplayer = new Replayer(itsFrame, itsTileStore, settings.getSpeed(), preview);
    mTextPaint = createPaint(Color.WHITE);
    mTextPaint.setTextSize(24);
    mBackPaint = createPaint(Color.BLACK);
  }

  private Paint createPaint(final int color) {
    Paint paint = new Paint();
    paint.setColor(color);
    return paint;
  }

  private IRobotFrame createFrame(final Point frameSize) {
    return FrameFactory.createRobot(frameSize.x, frameSize.y, new ARandom());
  }

  public void start() {
    Logger.d(TAG, "starte replayer");
    itsReplayer.start();
  }

  public void stop() {
    Logger.d(TAG, "stoppe replayer");
    itsReplayer.pause();
  }

  public void handleTap() {
    Logger.d(TAG, "handle tap");
    itsReplayer.onClick();
  }

  public Rect getDirtyRegion() {
    Rect dirtyRect = new Rect();
    for (Tile tile : itsTileStore)
      if (tile.isDirty())
        dirtyRect.union(tile.getDirtyRegion());
    return dirtyRect;
  }

  public void draw(final Canvas canvas, final Rect dirtyRegion) {
    if (Logger.isDebugEnabled())
      mCounter.inc();
    canvas.drawColor(0xff000000);
    for (Tile tile : itsTileStore)
      tile.draw(canvas);
  }

  private void drawFpsInfo(final Canvas canvas, final int x, final int y) {
    mFpsDisplayBackArea.set(x, y - 20, x + 90, y);
    canvas.drawRect(mFpsDisplayBackArea, mBackPaint);
    canvas.drawText("FPS: " + mCounter.getFPS(), x, y, mTextPaint);
  }

  public void draw(final SurfaceHolder holder) {
    Canvas canvas = null;
    try {
      Rect dirtyRegion = getDirtyRegion();
      canvas = holder.lockCanvas(dirtyRegion);
      if (canvas == null)
        return;
      draw(canvas, dirtyRegion);
      if (Logger.isDebugEnabled())
        drawFpsInfo(canvas, dirtyRegion.centerX(), dirtyRegion.centerY());
    } finally {
      if (canvas != null)
        holder.unlockCanvasAndPost(canvas);
    }
  }

}

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