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package cgeo.geocaching.ui;
import butterknife.ButterKnife;
import cgeo.geocaching.Image;
import cgeo.geocaching.R;
import cgeo.geocaching.files.LocalStorage;
import cgeo.geocaching.list.StoredList;
import cgeo.geocaching.network.HtmlImage;
import cgeo.geocaching.utils.Log;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import rx.Subscription;
import rx.android.observables.AndroidObservable;
import rx.functions.Action0;
import rx.functions.Action1;
import rx.subscriptions.CompositeSubscription;
import rx.subscriptions.Subscriptions;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.net.Uri;
import android.text.Html;
import android.util.SparseArray;
import android.view.ContextMenu;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.webkit.MimeTypeMap;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.Collection;
import java.util.LinkedList;
public class ImagesList {
private BitmapDrawable currentDrawable;
private Image currentImage;
public enum ImageType {
LogImages(R.string.cache_log_images_title),
SpoilerImages(R.string.cache_spoiler_images_title);
private final int titleResId;
ImageType(final int title) {
this.titleResId = title;
}
public int getTitle() {
return titleResId;
}
}
private LayoutInflater inflater = null;
private final Activity activity;
// We could use a Set here, but we will insert no duplicates, so there is no need to check for uniqueness.
private final Collection<Bitmap> bitmaps = new LinkedList<>();
/**
* map image view id to image
*/
private final SparseArray<Image> images = new SparseArray<>();
private final String geocode;
private LinearLayout imagesView;
public ImagesList(final Activity activity, final String geocode) {
this.activity = activity;
this.geocode = geocode;
inflater = activity.getLayoutInflater();
}
/**
* Load images into a view.
*
* @param parentView a view to load the images into
* @param images the images to load
* @param offline <tt>true</tt> if the images must be stored for offline use
* @return a subscription which, when unsubscribed, interrupts the loading and clears up resources
*/
public Subscription loadImages(final View parentView, final Collection<Image> images, final boolean offline) {
// Start with a fresh subscription because of this method can be called several times if the
// englobing activity is stopped/restarted.
final CompositeSubscription subscriptions = new CompositeSubscription(Subscriptions.create(new Action0() {
@Override
public void call() {
removeAllViews();
}
}));
imagesView = ButterKnife.findById(parentView, R.id.spoiler_list);
final HtmlImage imgGetter = new HtmlImage(geocode, true, offline ? StoredList.STANDARD_LIST_ID : StoredList.TEMPORARY_LIST_ID, false);
for (final Image img : images) {
final LinearLayout rowView = (LinearLayout) inflater.inflate(R.layout.cache_image_item, imagesView, false);
assert(rowView != null);
if (StringUtils.isNotBlank(img.getTitle())) {
final TextView titleView = ButterKnife.findById(rowView, R.id.title);
titleView.setText(Html.fromHtml(img.getTitle()));
rowView.findViewById(R.id.titleLayout).setVisibility(View.VISIBLE);
}
if (StringUtils.isNotBlank(img.getDescription())) {
final TextView descView = ButterKnife.findById(rowView, R.id.description);
descView.setText(Html.fromHtml(img.getDescription()), TextView.BufferType.SPANNABLE);
descView.setVisibility(View.VISIBLE);
}
final ImageView imageView = (ImageView) inflater.inflate(R.layout.image_item, rowView, false);
assert(imageView != null);
subscriptions.add(AndroidObservable.bindActivity(activity, imgGetter.fetchDrawable(img.getUrl())).subscribe(new Action1<BitmapDrawable>() {
@Override
public void call(final BitmapDrawable image) {
display(imageView, image, img, rowView);
}
}));
rowView.addView(imageView);
imagesView.addView(rowView);
}
return subscriptions;
}
private void display(final ImageView imageView, final BitmapDrawable image, final Image img, final LinearLayout view) {
if (image != null) {
bitmaps.add(image.getBitmap());
final Rect bounds = image.getBounds();
imageView.setImageResource(R.drawable.image_not_loaded);
imageView.setClickable(true);
imageView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(final View arg0) {
viewImageInStandardApp(img, image);
}
});
activity.registerForContextMenu(imageView);
imageView.setImageDrawable(image);
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setLayoutParams(new LinearLayout.LayoutParams(bounds.width(), bounds.height()));
view.findViewById(R.id.progress_bar).setVisibility(View.GONE);
imageView.setId(image.hashCode());
images.put(imageView.getId(), img);
view.invalidate();
}
}
private void removeAllViews() {
for (final Bitmap b : bitmaps) {
b.recycle();
}
bitmaps.clear();
images.clear();
imagesView.removeAllViews();
}
public void onCreateContextMenu(final ContextMenu menu, final View v) {
assert v instanceof ImageView;
activity.getMenuInflater().inflate(R.menu.images_list_context, menu);
final Resources res = activity.getResources();
menu.setHeaderTitle(res.getString(R.string.cache_image));
final ImageView view = (ImageView) v;
currentDrawable = (BitmapDrawable) view.getDrawable();
currentImage = images.get(view.getId());
}
public boolean onContextItemSelected(final MenuItem item) {
switch (item.getItemId()) {
case R.id.image_open_file:
viewImageInStandardApp(currentImage, currentDrawable);
return true;
case R.id.image_open_browser:
if (currentImage != null) {
currentImage.openInBrowser(activity);
}
return true;
default:
return false;
}
}
private static String mimeTypeForUrl(final String url) {
return StringUtils.defaultString(MimeTypeMap.getSingleton().getMimeTypeFromExtension(MimeTypeMap.getFileExtensionFromUrl(url)), "image/*");
}
private static File saveToTemporaryJPGFile(final BitmapDrawable image) throws FileNotFoundException {
final File file = LocalStorage.getStorageFile(null, "temp.jpg", false, true);
BufferedOutputStream stream = null;
try {
stream = new BufferedOutputStream(new FileOutputStream(file));
image.getBitmap().compress(CompressFormat.JPEG, 100, stream);
} finally {
IOUtils.closeQuietly(stream);
}
file.deleteOnExit();
return file;
}
private void viewImageInStandardApp(final Image img, final BitmapDrawable image) {
try {
final Intent intent = new Intent().setAction(android.content.Intent.ACTION_VIEW);
final File file = img.isLocalFile() ? img.localFile() : LocalStorage.getStorageFile(geocode, img.getUrl(), true, true);
if (file.exists()) {
intent.setDataAndType(Uri.fromFile(file), mimeTypeForUrl(img.getUrl()));
} else {
intent.setDataAndType(Uri.fromFile(saveToTemporaryJPGFile(image)), "image/jpeg");
}
activity.startActivity(intent);
} catch (final Exception e) {
Log.e("ImagesList.viewImageInStandardApp", e);
}
}
}
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