Android Open Source - napping-player Video Button View

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License

The source code is released under:

GNU General Public License

Java Source Code

// Copyright (C) 2013 Werner Robitza
///*w w  w.  jav  a2s  .  c  o m*/
// This file is part of NappingPlayer.
//
// NappingPlayer is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version. 
//
// NappingPlayer is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with NappingPlayer.  If not, see <http://www.gnu.org/licenses/>.
//
// NappingPlayer was written at the University of Vienna by Werner Robitza.

package at.ac.univie.nappingplayer.views;

import android.content.Context;
import android.graphics.Color;
import android.os.SystemClock;
import android.os.Vibrator;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.MarginLayoutParams;
import android.widget.RelativeLayout;
import at.ac.univie.nappingplayer.StartVideoListener;
import at.ac.univie.nappingplayer.grouping.SelectVideoListener;

public class VideoButtonView extends android.widget.Button {
  private static final String TAG = VideoButtonView.class.getSimpleName();
  private static final int CLICK_DURATION   = 100;
  private static final int VIBRATE_DURATION   = 50;
  private static final int STATUS_BAR_HEIGHT   = 35;
  
  private static final String COLOR_NEUTRAL  = "#AAAAAA";
  
  private String mLabel;
  private int mVideoId;
  private boolean mSelected;
  private int mMode;
  
  public static final int MODE_MOVE   = 0;
  public static final int MODE_GROUP   = 1;

  public VideoButtonView(Context context, int videoId) {
    super(context);
    this.setVideoId(videoId);
    this.setLabel(" " + (getVideoId() + 1) + " ");
    super.setBackgroundColor(Color.parseColor(COLOR_NEUTRAL));
    super.setText(getLabel());
    super.setTextColor(Color.parseColor("#000000"));
    
    
    setLayout();
    addClickListeners();
    
    this.mMode = MODE_MOVE;
    this.mSelected = false;
  }

  private void setLayout() {
    RelativeLayout.LayoutParams p = new RelativeLayout.LayoutParams(
        ViewGroup.LayoutParams.WRAP_CONTENT,
        ViewGroup.LayoutParams.WRAP_CONTENT);
    p.addRule(RelativeLayout.CENTER_HORIZONTAL);
    p.addRule(RelativeLayout.CENTER_VERTICAL);
    // TODO: More intelligent placement?
    super.setLayoutParams(p);
  }
  
  private void addClickListeners() {
    this.setOnTouchListener(new View.OnTouchListener() {
      long touchDownTime;
      int elapsedTime;
      boolean dragStarted = false;

      @Override
      public boolean onTouch(View v, MotionEvent event) {
        int action = event.getAction();
        switch (action) {
        
        case MotionEvent.ACTION_DOWN:
          Log.d(TAG, "Button DOWN press.");
          touchDownTime = SystemClock.elapsedRealtime();
          break;
          
        case MotionEvent.ACTION_MOVE:
          // record no movement if we're not napping
          if (mMode == MODE_GROUP) {
            break;
          }
          
          elapsedTime = (int) (SystemClock.elapsedRealtime() - touchDownTime);
          Log.d(TAG, "Button MOVE event. Elapsed time since touch: " + elapsedTime);
          if (SystemClock.elapsedRealtime() - touchDownTime > CLICK_DURATION) {
            // if we haven't vibrated yet
            if (!dragStarted) {
              Vibrator vibrator = (Vibrator) v.getContext().getSystemService(Context.VIBRATOR_SERVICE);
              vibrator.vibrate(VIBRATE_DURATION);
              dragStarted = true;
            } else {
              // http://stackoverflow.com/a/10075146
              MarginLayoutParams marginParams = new MarginLayoutParams(v.getLayoutParams());
              int left = (int) event.getRawX() - (v.getWidth() / 2);
              int top  = (int) event.getRawY() - (v.getHeight());
              marginParams.setMargins(left, top - STATUS_BAR_HEIGHT, 0, 0);
              RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(marginParams);
              v.setLayoutParams(layoutParams);
            }
          }
          break;
          
        case MotionEvent.ACTION_UP:
          elapsedTime = (int) (SystemClock.elapsedRealtime() - touchDownTime);
          Log.d(TAG, "Button UP event, elapsed time since touch: " + elapsedTime);
          if (elapsedTime <= CLICK_DURATION) {
            Log.d(TAG, "Button time less than click_duration, click registered");
            if (mMode == MODE_MOVE) {
              Log.d(TAG, "Button in play mode. Playing video.");
              // a real click if the touchdown time was short enough and no movement
              Context context = v.getContext();
              StartVideoListener listener = (StartVideoListener) context;
              listener.onStartVideoRequest((VideoButtonView) v);              
            } else if (mMode == MODE_GROUP) {
              Log.d(TAG, "Button in group mode. Selecting video.");
              Context context = v.getContext();
              SelectVideoListener listener = (SelectVideoListener) context;
              listener.onSelectVideoRequest((VideoButtonView) v);
            }
          } else {
            // cancel drag, do nothing
            dragStarted = false;
          }
          break;
        }
        
        return false;
      }
    });
  }
  
  public void showAsSelected(String color) {
    super.setBackgroundColor(Color.parseColor(color));
    this.mSelected = true;
  }
  
  public void showAsDeselected() {
    super.setBackgroundColor(Color.parseColor(COLOR_NEUTRAL));
    this.mSelected = false;
  }
    
  public boolean isSelected() {
    return mSelected;
  }

  public int getMode() {
    return mMode;
  }
  
  public void setMode(int mode) {
    this.mMode = mode;
  }
  
  public int getVideoId() {
    return mVideoId;
  }

  public void setVideoId(int mVideoId) {
    this.mVideoId = mVideoId;
  }

  public String getLabel() {
    return mLabel;
  }

  public void setLabel(String mLabel) {
    this.mLabel = mLabel;
  }
    
}

Java Source Code List

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