torch_sammy

package com.android.systemui.statusbar.preferences;

import android.content.Context;
import android.graphics.PixelFormat;
import android.view.View;
import android.view.WindowManager;
import android.view.WindowManager.LayoutParams;
import android.widget.ImageView;
import android.widget.Toast;
import android.media.PreviewSurface;
import android.media.PreviewSurface.Callback;

import com.android.systemui.R;

public class TorchController extends SettingsController {
    private TorchFactory tf;

    public TorchController(Context context, View button) {
        super(context, button);
        ((ImageView) button.findViewById(R.id.eos_settings_icon))
                .setImageResource(R.drawable.eos_torch);
        updateController();
    }

    protected int getPreferenceStatus() {
        return (tf != null) ? tf.getEnabled() : 0;
    }

    protected void setPreferenceStatus(int status) {
          if (status == 1) {
              tf = new TorchFactory(mContext);
              tf.toggleLED(true);
          } else {
              if (tf != null) {
                  tf.toggleLED(false);
                  tf = null;
              }
          }
    }
}

class TorchFactory implements Callback {
    PreviewSurface mSurface;
    WindowManager mWindowManager;
    LayoutParams mLayoutParams;
    Context mContext;

    private boolean mEnabled = false;

    public TorchFactory(Context context) {
        mContext = context;
        mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        mLayoutParams = new WindowManager.LayoutParams(
                1,
                1,
                WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                | WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL,
                PixelFormat.TRANSPARENT);
        mSurface = new PreviewSurface(mContext);
        mSurface.setCallback(this);
        mWindowManager.addView(mSurface, mLayoutParams);
        mSurface.setWindowManager(mWindowManager);

    }

    public boolean ledOn() {
        mSurface.initCamera();
        mSurface.startPreview();
        mSurface.lightOn();
        mEnabled = true;
        return true;
    }

    public boolean ledOff() {
        mSurface.releaseCamera();
        mEnabled = false;
        return true;
    }

    public int getEnabled() {
        return (mEnabled ? 1 : 0);
    }

    public boolean toggleLED (boolean toggle) {
        return (toggle) ? ledOn() : ledOff();
    }

    @Override
    public void cameraReady() {
        // TODO Auto-generated method stub
    }

    @Override
    public void cameraNotAvailable() {
        Toast.makeText(mContext, "Torch is not available", Toast.LENGTH_SHORT).show();
    }
}