Android Open Source - android-dynamic-views Views Activity

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License

The source code is released under:

Apache License

Java Source Code

/**
 * @author edlectrico//from  ww w.j  av  a2 s.c o m
 */

package es.deusto.deustotech;

import android.app.Activity;
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Rect;
import android.graphics.drawable.ColorDrawable;
import android.media.AudioManager;
import android.os.Build;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.util.Log;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.GridLayout;
import android.widget.SeekBar;
import android.widget.Switch;
import es.deusto.deustotech.utils.ColorPickerDialog;

/**
 * This activity configures the minimum visual interaction values
 */
public class ViewsActivity extends Activity implements android.view.View.OnClickListener, 
    OnCheckedChangeListener, TextToSpeech.OnInitListener, ColorPickerDialog.OnColorChangedListener {

  private static final String TAG = ViewsActivity.class.getSimpleName();
  private Button testButton;
  private Button testTextEdit; //Actually, it is a button with a transparent background
  private GridLayout grid;
  private AudioManager audioManager = null;
  private TextToSpeech tts;
  private int viewColor;
  
  private boolean buttonPressed = false;
  private boolean textEditPressed = false;
  
  private Bitmap mBitmap;
  private Canvas mCanvas;
  private Rect mBounds;
  
  //brightness
  float brightnessValue = 0.5f; // dummy default value
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.views_activity);

    testButton = (Button) findViewById(R.id.test_button);
    testButton.setOnClickListener(this);
    
    testTextEdit = (Button) findViewById(R.id.test_text_edit);
    testTextEdit.setOnClickListener(this);
    
    tts = new TextToSpeech(this, this);
    
    SeekBar brightnessSeekBar = (SeekBar) findViewById(R.id.brightness_control);
    SeekBar volumeSeekBar = (SeekBar) findViewById(R.id.volume_control);
    
    audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    volumeSeekBar.setMax(audioManager
                .getStreamMaxVolume(AudioManager.STREAM_MUSIC));
    volumeSeekBar.setProgress(audioManager
                .getStreamVolume(AudioManager.STREAM_MUSIC));   
    
    Switch nightModeSwitch = (Switch) findViewById(R.id.night_mode_switch);
      if (nightModeSwitch != null) {
          nightModeSwitch.setOnCheckedChangeListener(this);
      }

    brightnessSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress,
          boolean fromUser) {
        brightnessValue = (float) progress / 100;

        WindowManager.LayoutParams layoutParams = getWindow()
            .getAttributes();
        layoutParams.screenBrightness = brightnessValue;
        getWindow().setAttributes(layoutParams);
      }

      @Override
      public void onStartTrackingTouch(SeekBar seekBar) { }

      @Override
      public void onStopTrackingTouch(SeekBar seekBar) { }
    });
    
    volumeSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress,
          boolean fromUser) {
        audioManager.setStreamVolume(AudioManager.STREAM_MUSIC,
                        progress, 0);
        
        tts.speak("Testing volume", TextToSpeech.QUEUE_FLUSH, null);
      }

      @Override
      public void onStartTrackingTouch(SeekBar seekBar) { }

      @Override
      public void onStopTrackingTouch(SeekBar seekBar) { }
    });
    
    this.grid = (GridLayout) findViewById(R.id.default_layout);
    
    this.grid.getChildAt(1).setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        Log.d(TAG, "Layout 1");
        
        float x = event.getRawX();
        float y = event.getRawY();
    
        testButton.setWidth((int) x);
        testButton.setHeight((int) y);
        testButton.invalidate();
        
        return true;
      }
    });
    
    this.grid.getChildAt(2).setOnTouchListener(new OnTouchListener() {
      @Override
      public boolean onTouch(View v, MotionEvent event) {
        Log.d(TAG, "Layout 2");
        
        float x = event.getRawX();
    
        testTextEdit.setTextSize((float) (x / 10.0));
        testTextEdit.invalidate();
        
        return true;
      }
    });
  }

  private void enableNightMode(final boolean enable) {
    //TODO: Night mode is more than changing just the background color...
    View view = this.getWindow().getDecorView();
    if (enable){
      view.setBackgroundColor(Color.BLACK);
    } else {
      view.setBackgroundColor(Color.WHITE);
    }
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

  @Override
  public void onClick(View view) {
    //Launch color dialog
    if (view.getId() == R.id.test_button){
      buttonPressed = true;
      int colorId = getBackgroundColor(this.testButton);
      new ColorPickerDialog(this, this, colorId).show();
    } else if (view.getId() == R.id.test_text_edit){
      textEditPressed = true;
      final ColorStateList colors = this.testTextEdit.getTextColors();
      new ColorPickerDialog(this, this, colors.getDefaultColor()).show();
    } 
  }

  public int getBackgroundColor(View view) {
    // The actual color, not the id.
    int color = Color.BLACK;

    if(view.getBackground() instanceof ColorDrawable) {
      if(Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
        initIfNeeded();
        // If the ColorDrawable makes use of its bounds in the draw method,
        // we may not be able to get the color we want. This is not the usual
        // case before Ice Cream Sandwich (4.0.1 r1).
        // Yet, we change the bounds temporarily, just to be sure that we are
        // successful.
        ColorDrawable colorDrawable = (ColorDrawable)view.getBackground();

        mBounds.set(colorDrawable.getBounds()); // Save the original bounds.
        colorDrawable.setBounds(0, 0, 1, 1); // Change the bounds.

        colorDrawable.draw(mCanvas);
        color = mBitmap.getPixel(0, 0);

        colorDrawable.setBounds(mBounds); // Restore the original bounds.
      }
      else {
        color = ((ColorDrawable)view.getBackground()).getColor();
      }
    }

    return color;
  }

  public void initIfNeeded() {
    if(mBitmap == null) {
      mBitmap = Bitmap.createBitmap(1,1, Bitmap.Config.ARGB_8888);
      mCanvas = new Canvas(mBitmap);
      mBounds = new Rect();
    }
  }

  @Override
  public void onCheckedChanged(CompoundButton arg0, boolean checked) {
      enableNightMode(checked);
  }

  @Override
  public void onInit(int status) { }

  @Override
  public void colorChanged(int color) {
    this.viewColor = color;
    if (buttonPressed){
      this.testButton.setBackgroundColor(this.viewColor);
      buttonPressed = false;
    } else if (textEditPressed){
      this.testTextEdit.setTextColor(this.viewColor);
      textEditPressed = false;
    }
  }
  
}

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