Android Open Source - GalDroid Image View Activity

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License

The source code is released under:
GNU General Public License
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Java Source Code

/*
 * GalDroid - a webgallery frontend for android
 * Copyright (C) 2011  Raptor 2101 [raptor2101@gmx.de]
 *    /* w w w.ja v  a 2s  .  co m*/
 * This program 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.

 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  
 */

package de.raptor2101.GalDroid.Activities;

import java.util.List;

import android.app.ActionBar;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Gallery;
import de.raptor2101.GalDroid.R;
import de.raptor2101.GalDroid.Activities.Helpers.ActionBarHider;
import de.raptor2101.GalDroid.Activities.Helpers.ImageAdapter;
import de.raptor2101.GalDroid.Activities.Helpers.ImageAdapter.DisplayTarget;
import de.raptor2101.GalDroid.Activities.Helpers.ImageAdapter.ScaleMode;
import de.raptor2101.GalDroid.Activities.Helpers.ImageAdapter.TitleConfig;
import de.raptor2101.GalDroid.Activities.Listeners.ImageViewOnTouchListener;
import de.raptor2101.GalDroid.Activities.Views.GalleryImageView;
import de.raptor2101.GalDroid.Activities.Views.ImageInformationView;
import de.raptor2101.GalDroid.WebGallery.ImageCache;
import de.raptor2101.GalDroid.WebGallery.Interfaces.GalleryObject;
import de.raptor2101.GalDroid.WebGallery.Interfaces.WebGallery;
import de.raptor2101.GalDroid.WebGallery.Tasks.ImageLoaderTask;

public class ImageViewActivity extends GalleryActivity implements OnItemSelectedListener, OnItemClickListener {

  private Gallery mGalleryFullscreen;
  private Gallery mGalleryThumbnails;

  private ImageAdapter mAdapterFullscreen, mAdapterThumbnails;

  private ImageInformationView mInformationView;

  private ActionBarHider mActionBarHider;

  private ImageLoaderTask mFullscrennImageLoaderTask;
  private ImageLoaderTask mThumbnailImageLoaderTask;

  @Override
  public void onCreate(Bundle savedInstanceState) {
    requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);

    setContentView(R.layout.image_view_activity);
    super.onCreate(savedInstanceState);

    ActionBar actionBar = getActionBar();

    actionBar.setDisplayShowHomeEnabled(false);
    actionBar.setDisplayShowTitleEnabled(false);
    actionBar.hide();
    mActionBarHider = new ActionBarHider(actionBar);

    GalDroidApp app = (GalDroidApp) getApplication();

    WebGallery webGallery = app.getWebGallery();
    ImageCache imageCache = app.getImageCache();

    mInformationView = (ImageInformationView) findViewById(R.id.viewImageInformations);
    boolean showInfo = getIntent().getExtras().getBoolean(GalDroidApp.INTENT_EXTRA_SHOW_IMAGE_INFO);
    if (showInfo) {
      mInformationView.setVisibility(View.VISIBLE);
    } else {
      mInformationView.setVisibility(View.GONE);
    }
    mInformationView.initialize();

    DisplayMetrics metrics = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);

    mGalleryFullscreen = (Gallery) findViewById(R.id.singleImageGallery);
    mGalleryThumbnails = (Gallery) findViewById(R.id.thumbnailImageGallery);

    mFullscrennImageLoaderTask = new ImageLoaderTask(webGallery, imageCache, 5);
    mThumbnailImageLoaderTask = new ImageLoaderTask(webGallery, imageCache, (int) ((metrics.widthPixels / 100) * 1.5));

    mGalleryThumbnails.setWillNotCacheDrawing(true);

    ImageViewOnTouchListener touchListener = new ImageViewOnTouchListener(mGalleryFullscreen, mGalleryThumbnails, metrics.heightPixels / 5f);

    mAdapterFullscreen = new ImageAdapter(this, new Gallery.LayoutParams(metrics.widthPixels, metrics.heightPixels), ScaleMode.ScaleSource, mFullscrennImageLoaderTask);
    mAdapterFullscreen.setTitleConfig(TitleConfig.HideTitle);
    mAdapterFullscreen.setDisplayTarget(DisplayTarget.FullScreen);

    mAdapterThumbnails = new ImageAdapter(this, new Gallery.LayoutParams(100, 100), ScaleMode.DontScale, mThumbnailImageLoaderTask);
    mAdapterThumbnails.setTitleConfig(TitleConfig.HideTitle);
    mAdapterThumbnails.setDisplayTarget(DisplayTarget.Thumbnails);

    mGalleryFullscreen.setAdapter(mAdapterFullscreen);
    mGalleryThumbnails.setAdapter(mAdapterThumbnails);

    mGalleryFullscreen.setOnItemClickListener(this);
    mGalleryFullscreen.setOnTouchListener(touchListener);
    mGalleryFullscreen.setOnItemSelectedListener(this);
    mGalleryThumbnails.setOnItemSelectedListener(this);
  }

  @Override
  public void onBackPressed() {
    ImageAdapter adapter = (ImageAdapter) mGalleryFullscreen.getAdapter();
    adapter.cleanUp();

    Intent resultIntent = new Intent(this, ImageViewActivity.class);
    resultIntent.putExtra(GalDroidApp.INTENT_EXTRA_DISPLAY_INDEX, getCurrentIndex());
    setResult(Activity.RESULT_OK, resultIntent);

    super.onBackPressed();
  }

  @Override
  protected void onResume() {
    super.onResume();

    ImageAdapter adapter = (ImageAdapter) mGalleryFullscreen.getAdapter();
    if (adapter != null) {
      adapter.refreshImages();
    }

    adapter = (ImageAdapter) mGalleryThumbnails.getAdapter();
    if (adapter != null) {
      adapter.refreshImages();
    }

    mFullscrennImageLoaderTask.start();
    mThumbnailImageLoaderTask.start();
  }

  @Override
  protected void onPause() {
    super.onPause();

    try {
      mFullscrennImageLoaderTask.stop(false);
      mThumbnailImageLoaderTask.stop(false);
    } catch (InterruptedException e) {

    }
  }

  @Override
  protected void onStop() {
    super.onStop();

    try {
      mFullscrennImageLoaderTask.cancel(true);
      mThumbnailImageLoaderTask.cancel(true);
    } catch (InterruptedException e) {

    }

    ImageAdapter adapter = (ImageAdapter) mGalleryFullscreen.getAdapter();
    adapter.cleanUp();
    adapter = (ImageAdapter) mGalleryThumbnails.getAdapter();
    adapter.cleanUp();
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.image_view_options_menu, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.item_additional_info_object:
      if (mInformationView.getVisibility() == View.GONE) {
        mInformationView.setVisibility(View.VISIBLE);
      } else {
        mInformationView.setVisibility(View.GONE);
      }
      break;
    case R.id.item_additional_share_object:
      GalleryImageView view = (GalleryImageView) mGalleryFullscreen.getSelectedView();
      String uniqueId = view.getGalleryObject().getImage().getUniqueId();
      GalDroidApp app = (GalDroidApp) getApplicationContext();
      ImageCache cache = app.getImageCache();
      callShareIntentActivity(cache.getFile(uniqueId));
      break;
    }
    return true;
  }

  public void onItemSelected(AdapterView<?> gallery, View view, int position, long arg3) {
    setCurrentIndex(position);

    if (gallery == mGalleryFullscreen) {
      mGalleryThumbnails.setSelection(position);
    } else {
      mGalleryFullscreen.setSelection(position);
      view = mGalleryFullscreen.getSelectedView();
    }
    mInformationView.setGalleryImageView((GalleryImageView) view);
  }

  public void onNothingSelected(AdapterView<?> arg0) {
    // Empty Stub, cause nothing to do
  }

  @Override
  public void onGalleryObjectsLoaded(List<GalleryObject> galleryObjects) {
    mAdapterFullscreen.setGalleryObjects(galleryObjects);
    mAdapterThumbnails.setGalleryObjects(galleryObjects);

    int currentIndex = getCurrentIndex();
    if (currentIndex == -1) {
      GalleryObject currentObject = (GalleryObject) getIntent().getExtras().getSerializable(GalDroidApp.INTENT_EXTRA_DISPLAY_OBJECT);
      currentIndex = galleryObjects.indexOf(currentObject);
    }

    mGalleryFullscreen.setSelection(currentIndex);
    mGalleryThumbnails.setSelection(currentIndex);
    mFullscrennImageLoaderTask.start();
  }

  public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
    if (mActionBarHider.isShowing()) {
      mActionBarHider.hide();
    } else {
      mActionBarHider.show();
    }

  }
}
Java Source Code List
