Android Open Source - android-clock-livewallpaper Clock Wallpaper Service

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From Project

Back to project page android-clock-livewallpaper.

License

The source code is released under:

MIT License

Java Source Code

package com.ssaurel.clocklw;
//from   w w  w. jav  a  2  s.  c o m
import java.util.Date;

import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.service.wallpaper.WallpaperService;
import android.view.SurfaceHolder;

/**
 * Clock wallpaper service
 * 
 * @author sylsau - sylvain.saurel@gmail.com - http://www.ssaurel.com
 *
 */
public class ClockWallpaperService extends WallpaperService {

  @Override
  public Engine onCreateEngine() {
    return new ClockWallpaperEngine();
  }

  private class ClockWallpaperEngine extends Engine implements
      OnSharedPreferenceChangeListener {
    private final Handler handler = new Handler();
    private final Runnable drawRunner = new Runnable() {
      @Override
      public void run() {
        draw();
      }

    };

    private Paint paint;
    /** hands colors for hour, min, sec */
    private int[] colors = { 0xFFFF0000, 0xFF0000FF, 0xFFA2BC13 };
    private int bgColor;
    private int width;
    private int height;
    private boolean visible = true;
    private boolean displayHandSec;
    private AnalogClock clock;
    private SharedPreferences prefs;

    public ClockWallpaperEngine() {
      prefs = PreferenceManager
          .getDefaultSharedPreferences(ClockWallpaperService.this);
      prefs.registerOnSharedPreferenceChangeListener(this);
      displayHandSec = prefs.getBoolean(
          SettingsActivity.DISPLAY_HAND_SEC_KEY, true);
      paint = new Paint();
      paint.setAntiAlias(true);
      paint.setStyle(Paint.Style.STROKE);
      paint.setStrokeWidth(5);
      bgColor = Color.parseColor("#C0C0C0");
      clock = new AnalogClock(getApplicationContext());
      handler.post(drawRunner);
    }

    @Override
    public void onVisibilityChanged(boolean visible) {
      this.visible = visible;
      if (visible) {
        handler.post(drawRunner);
      } else {
        handler.removeCallbacks(drawRunner);
      }
    }

    @Override
    public void onSurfaceDestroyed(SurfaceHolder holder) {
      super.onSurfaceDestroyed(holder);
      this.visible = false;
      handler.removeCallbacks(drawRunner);
      prefs.unregisterOnSharedPreferenceChangeListener(this);
    }

    @Override
    public void onSurfaceChanged(SurfaceHolder holder, int format,
        int width, int height) {
      this.width = width;
      this.height = height;
      super.onSurfaceChanged(holder, format, width, height);
    }

    private void draw() {
      SurfaceHolder holder = getSurfaceHolder();
      Canvas canvas = null;
      try {
        canvas = holder.lockCanvas();
        if (canvas != null) {
          draw(canvas);
        }
      } finally {
        if (canvas != null)
          holder.unlockCanvasAndPost(canvas);
      }

      handler.removeCallbacks(drawRunner);

      if (visible) {
        handler.postDelayed(drawRunner, 200);
      }
    }

    private void draw(Canvas canvas) {
      canvas.drawColor(bgColor);
      clock.config(width / 2, height / 2, (int) (width * 0.6f),
          new Date(), paint, colors, displayHandSec);
      clock.draw(canvas);
    }

    @Override
    public void onSharedPreferenceChanged(
        SharedPreferences sharedPreferences, String key) {
      if (SettingsActivity.DISPLAY_HAND_SEC_KEY.equals(key)) {
        displayHandSec = sharedPreferences.getBoolean(
            SettingsActivity.DISPLAY_HAND_SEC_KEY, true);
      }
    }

  }

}

Java Source Code List

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