Android Open Source - MiraSlide Controller Fragment

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Back to project page MiraSlide.

License

The source code is released under:

Apache License

Java Source Code

package fr.cmoatoto.miraslide.fragments;
/*from ww w . ja  v a  2 s  .  co  m*/
import android.os.Bundle;
import android.os.SystemClock;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.SimpleOnPageChangeListener;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Chronometer;
import android.widget.ImageView;
import fr.cmoatoto.miraslide.MainActivity;
import fr.cmoatoto.miraslide.R;

/**
 * This fragment presents the slide on the external display (controllable with a viewpager), the page number, 
 * two buttons prev and next, and a chronometer, very useful for a speaker.
 * 
 * @author CmoaToto
 *
 */
public class ControllerFragment extends Fragment implements OnClickListener {

  // The viewpager and the adapter to show the slides
  private SlidesPagerAdapter mSlidesPagerAdapter;
  private ViewPager mSlidesViewPager;
  
  // A boolean to know if the chronometer is running, and one to store the stopped
  // value if the chronometer has been stopped.
  private boolean mIsChronometerRunning = false;
  private long mChronometerStoppedTime = 0;

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

    View v = inflater.inflate(R.layout.fragment_controller, container, false);

    v.findViewById(R.id.fragment_controller_chronometer).setOnClickListener(this);
    v.findViewById(R.id.fragment_controller_chronometer_button_reset).setOnClickListener(this);
    v.findViewById(R.id.fragment_controller_button_pagenext).setOnClickListener(this);
    v.findViewById(R.id.fragment_controller_button_pageprev).setOnClickListener(this);
    
    createViewPager(v);

    return v;
  }
  
  /** We create the viewpager which shows the pages of the pdf file. If the user change the slide, the listener
   * updates tell the parent Activity to change the image in the presentation.
   * 
   * @param v : the fragment view
   */
  private void createViewPager(View v) {
    mSlidesPagerAdapter = new SlidesPagerAdapter(((FragmentActivity) getActivity()).getSupportFragmentManager());
    mSlidesViewPager = (ViewPager) v.findViewById(R.id.fragment_controller_pager);
    mSlidesViewPager.setAdapter(mSlidesPagerAdapter);
    mSlidesViewPager.setOnPageChangeListener(new SimpleOnPageChangeListener() {
      
      @Override
      public void onPageSelected(int page) {
        ((MainActivity) getActivity()).getPresentation().moveTo(page);
      }
    });
  }

  @Override
  public void onClick(View v) {
    if (v.getId() == R.id.fragment_controller_chronometer) {
      // On click on the chronometer, we start or stop the chrono and update the image behind
      if (mIsChronometerRunning) {
        ((Chronometer) v).stop();
        mChronometerStoppedTime = SystemClock.elapsedRealtime() - ((Chronometer) v).getBase();
        ((ImageView) getView().findViewById(R.id.fragment_controller_chronometer_imageview_playpause)).setImageResource(R.drawable.ic_action_play);
        mIsChronometerRunning = false;
      } else {
        ((Chronometer) v).setBase(SystemClock.elapsedRealtime() - mChronometerStoppedTime);
        ((Chronometer) v).start();
        ((ImageView) getView().findViewById(R.id.fragment_controller_chronometer_imageview_playpause)).setImageResource(R.drawable.ic_action_pause);
        mIsChronometerRunning = true;
      }

    } else if (v.getId() == R.id.fragment_controller_chronometer_button_reset) {
      // On click on the reset button, we stop the chronometer and set it back to 0
      ((Chronometer) getView().findViewById(R.id.fragment_controller_chronometer)).setBase(SystemClock.elapsedRealtime());
      ((Chronometer) getView().findViewById(R.id.fragment_controller_chronometer)).stop();
      ((ImageView) getView().findViewById(R.id.fragment_controller_chronometer_imageview_playpause)).setImageResource(R.drawable.ic_action_play);
      mChronometerStoppedTime = 0;
      mIsChronometerRunning = false;

    } else if (v.getId() == R.id.fragment_controller_button_pageprev) {
      // On click on the prev button, we move the viewpager one slide back (which will move the presentation slide as well)
      mSlidesViewPager.setCurrentItem(mSlidesViewPager.getCurrentItem() - 1);

    } else if (v.getId() == R.id.fragment_controller_button_pagenext) {
      // On click on the next button, we move the viewpager one slide next (which will move the presentation slide as well)
      mSlidesViewPager.setCurrentItem(mSlidesViewPager.getCurrentItem() + 1);
    }
  }

  /** The adapter of the slides viewpager. It shows SlideFragments */
  private class SlidesPagerAdapter extends FragmentStatePagerAdapter {

    public SlidesPagerAdapter(FragmentManager fm) {
      super(fm);
    }

    @Override
    public Fragment getItem(int i) {
      Fragment fragment = new SlideFragment();
      Bundle args = new Bundle();
      args.putInt(SlideFragment.KEY_PAGE, i);
      fragment.setArguments(args);
      return fragment;
    }

    @Override
    public int getCount() {
      return ((MainActivity) getActivity()).getPresentation() == null ? 0 : ((MainActivity) getActivity()).getPresentation().getPageCount();
    }

    @Override
    public CharSequence getPageTitle(int position) {
      return "Page " + (position + 1);
    }

  }

  /** When there is a change in the pdf, we notify the viewpager to recreate himself. */
  public void notifyViewPager() {
    createViewPager(getView());
  }

}

Java Source Code List

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