Some imageviewer progress

Clover/app/src/main/java/org/floens/chan/core/model/PostImage.java

@@ -1,17 +1,35 @@
 package org.floens.chan.core.model;
 
 public class PostImage {
+    public enum Type {
+        STATIC, GIF, MOVIE
+    }
+
     public String thumbnailUrl;
     public String imageUrl;
     public String filename;
     public int imageWidth;
     public int imageHeight;
 
-    public PostImage(String thumbnailUrl, String imageUrl, String filename, int imageWidth, int imageHeight) {
+    public Type type;
+
+    public PostImage(String thumbnailUrl, String imageUrl, String filename, String extension, int imageWidth, int imageHeight) {
         this.thumbnailUrl = thumbnailUrl;
         this.imageUrl = imageUrl;
         this.filename = filename;
         this.imageWidth = imageWidth;
         this.imageHeight = imageHeight;
+
+        switch (extension) {
+            case "gif":
+                type = Type.GIF;
+                break;
+            case "webm":
+                type = Type.MOVIE;
+                break;
+            default:
+                type = Type.STATIC;
+                break;
+        }
     }
 }

Clover/app/src/main/java/org/floens/chan/core/presenter/ImageViewerPresenter.java

@@ -0,0 +1,40 @@
+package org.floens.chan.core.presenter;
+
+import org.floens.chan.core.model.PostImage;
+
+import java.util.List;
+
+public class ImageViewerPresenter {
+    private final Callback callback;
+
+    private boolean exiting = false;
+    private List<PostImage> images;
+    private int selectedIndex;
+
+    public ImageViewerPresenter(Callback callback) {
+        this.callback = callback;
+    }
+
+    public void showImages(List<PostImage> images, int index) {
+        callback.startPreviewInTransition();
+
+        this.images = images;
+        selectedIndex = index;
+    }
+
+    public void onExit() {
+        if (exiting) return;
+        exiting = true;
+        callback.startPreviewOutTransition();
+    }
+
+    public void onInTransitionEnd() {
+        PostImage image = images.get(selectedIndex);
+    }
+
+    public interface Callback {
+        public void startPreviewInTransition();
+
+        public void startPreviewOutTransition();
+    }
+}

Clover/app/src/main/java/org/floens/chan/core/presenter/ThreadPresenter.java

@@ -141,7 +141,7 @@ public class ThreadPresenter implements ChanLoader.ChanLoaderCallback, PostAdapt
         for (int i = 0; i < chanLoader.getThread().posts.size(); i++) {
             Post item = chanLoader.getThread().posts.get(i);
             if (item.hasImage) {
-                images.add(new PostImage(item.thumbnailUrl, item.imageUrl, item.filename, item.imageWidth, item.imageHeight));
+                images.add(new PostImage(item.thumbnailUrl, item.imageUrl, item.filename, item.ext, item.imageWidth, item.imageHeight));
                 if (item.no == post.no) {
                     index = i;
                 }

Clover/app/src/main/java/org/floens/chan/ui/adapter/ImageViewerAdapter.java

@@ -0,0 +1,35 @@
+package org.floens.chan.ui.adapter;
+
+import android.content.Context;
+import android.view.View;
+
+import org.floens.chan.core.model.PostImage;
+import org.floens.chan.ui.view.MultiImageView;
+import org.floens.chan.ui.view.ViewPagerAdapter;
+
+import java.util.List;
+
+public class ImageViewerAdapter extends ViewPagerAdapter {
+    private final Context context;
+    private final List<PostImage> images;
+    private final MultiImageView.Callback multiImageViewCallback;
+
+    public ImageViewerAdapter(Context context, List<PostImage> images, MultiImageView.Callback multiImageViewCallback) {
+        this.context = context;
+        this.images = images;
+        this.multiImageViewCallback = multiImageViewCallback;
+    }
+
+    @Override
+    public View getView(int position) {
+        MultiImageView view = new MultiImageView(context);
+        view.bindPostImage(images.get(position), multiImageViewCallback);
+
+        return view;
+    }
+
+    @Override
+    public int getCount() {
+        return images.size();
+    }
+}

Clover/app/src/main/java/org/floens/chan/ui/controller/ImageViewerController.java

@@ -11,6 +11,7 @@ import android.graphics.Color;
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.os.Build;
+import android.support.v4.view.ViewPager;
 import android.view.View;
 import android.view.Window;
 import android.view.animation.DecelerateInterpolator;
@@ -18,52 +19,70 @@ import android.widget.ImageView;
 
 import org.floens.chan.R;
 import org.floens.chan.controller.Controller;
+import org.floens.chan.core.presenter.ImageViewerPresenter;
+import org.floens.chan.ui.toolbar.Toolbar;
 import org.floens.chan.ui.view.ClippingImageView;
 import org.floens.chan.utils.AnimationUtils;
-import org.floens.chan.utils.Logger;
 
 import static org.floens.chan.utils.AndroidUtils.dp;
 import static org.floens.chan.utils.AnimationUtils.calculateBoundsAnimation;
 
-public class ImageViewerController extends Controller implements View.OnClickListener {
+public class ImageViewerController extends Controller implements View.OnClickListener, ImageViewerPresenter.Callback {
     private static final int TRANSITION_DURATION = 200; //165;
     private static final int TRANSITION_CLIP_DURATION = (int) (TRANSITION_DURATION * 0.5f);
     private static final float TRANSITION_FINAL_ALPHA = 0.80f;
 
-    private ClippingImageView previewImage;
-    private Callback callback;
-
     private int statusBarColorPrevious;
     private AnimatorSet startPreviewAnimation;
     private AnimatorSet endAnimation;
 
-    public ImageViewerController(Context context) {
+    private Callback callback;
+    private ImageViewerPresenter presenter;
+
+    private final Toolbar toolbar;
+    private ClippingImageView previewImage;
+    private ViewPager pager;
+
+    public ImageViewerController(Context context, Toolbar toolbar) {
         super(context);
+        this.toolbar = toolbar;
+
+        presenter = new ImageViewerPresenter(this);
     }
 
     @Override
     public void onCreate() {
         super.onCreate();
 
+        navigationItem.title = "Image title here";
+
         view = inflateRes(R.layout.controller_image_viewer);
-        previewImage = (ClippingImageView) view.findViewById(R.id.image);
         view.setOnClickListener(this);
+        previewImage = (ClippingImageView) view.findViewById(R.id.preview_image);
+        pager = (ViewPager) view.findViewById(R.id.pager);
     }
 
     @Override
     public void onClick(View v) {
-        startPreviewOutTransition();
+        presenter.onExit();
     }
 
     @Override
     public boolean onBack() {
-        startPreviewOutTransition();
+        presenter.onExit();
         return true;
     }
 
-    public void startPreviewInTransition(Callback callback, final ImageView previewImageView) {
+    public void setCallback(Callback callback) {
         this.callback = callback;
+    }
+
+    public ImageViewerPresenter getPresenter() {
+        return presenter;
+    }
 
+    public void startPreviewInTransition() {
+        ImageView previewImageView = callback.getPreviewImageStartView(this);
         previewImage.setImageDrawable(previewImageView.getDrawable());
 
         Rect startBounds = getImageViewBounds(previewImageView);
@@ -127,6 +146,11 @@ public class ImageViewerController extends Controller implements View.OnClickLis
 
         startPreviewAnimation.setInterpolator(new DecelerateInterpolator());
         startPreviewAnimation.addListener(new AnimatorListenerAdapter() {
+            @Override
+            public void onAnimationStart(Animator animation) {
+                callback.onPreviewCreate(ImageViewerController.this);
+            }
+
             @Override
             public void onAnimationEnd(Animator animation) {
                 previewImage.setX(0f);
@@ -135,6 +159,7 @@ public class ImageViewerController extends Controller implements View.OnClickLis
                 previewImage.setScaleY(1f);
                 previewImage.clip(null);
                 startPreviewAnimation = null;
+                presenter.onInTransitionEnd();
             }
         });
         startPreviewAnimation.start();
@@ -220,23 +245,27 @@ public class ImageViewerController extends Controller implements View.OnClickLis
     }
 
     private void previewOutAnimationEnded() {
-        setStatusBarColor(statusBarColorPrevious);
+        setBackgroundAlpha(0f);
 
         callback.onPreviewDestroy(this);
         navigationController.stopPresenting(false);
     }
 
     private void setBackgroundAlpha(float alpha) {
-        alpha *= TRANSITION_FINAL_ALPHA;
-        view.setBackgroundColor(Color.argb((int) (alpha * 255f), 0, 0, 0));
+        view.setBackgroundColor(Color.argb((int) (alpha * TRANSITION_FINAL_ALPHA * 255f), 0, 0, 0));
 
         if (Build.VERSION.SDK_INT >= 21) {
-            int r = (int) ((1f - alpha) * Color.red(statusBarColorPrevious));
-            int g = (int) ((1f - alpha) * Color.green(statusBarColorPrevious));
-            int b = (int) ((1f - alpha) * Color.blue(statusBarColorPrevious));
-
-            setStatusBarColor(Color.argb(255, r, g, b));
+            if (alpha == 0f) {
+                setStatusBarColor(statusBarColorPrevious);
+            } else {
+                int r = (int) ((1f - alpha) * Color.red(statusBarColorPrevious));
+                int g = (int) ((1f - alpha) * Color.green(statusBarColorPrevious));
+                int b = (int) ((1f - alpha) * Color.blue(statusBarColorPrevious));
+                setStatusBarColor(Color.argb(255, r, g, b));
+            }
         }
+
+        setToolbarBackgroundAlpha(alpha);
     }
 
     private void setStatusBarColor(int color) {
@@ -245,12 +274,15 @@ public class ImageViewerController extends Controller implements View.OnClickLis
         }
     }
 
+    private void setToolbarBackgroundAlpha(float alpha) {
+        toolbar.setAlpha(alpha);
+    }
+
     private Rect getImageViewBounds(ImageView image) {
         Rect startBounds = new Rect();
         if (image.getGlobalVisibleRect(startBounds) && !startBounds.isEmpty()) {
             AnimationUtils.adjustImageViewBoundsToDrawableBounds(image, startBounds);
             if (!startBounds.isEmpty()) {
-                Logger.test(startBounds.toShortString());
                 return startBounds;
             } else {
                 return null;
@@ -271,6 +303,8 @@ public class ImageViewerController extends Controller implements View.OnClickLis
     public interface Callback {
         public ImageView getPreviewImageStartView(ImageViewerController imageViewerController);
 
+        public void onPreviewCreate(ImageViewerController imageViewerController);
+
         public void onPreviewDestroy(ImageViewerController imageViewerController);
     }
 }

Clover/app/src/main/java/org/floens/chan/ui/controller/ImageViewerNavigationController.java

@@ -3,13 +3,15 @@ package org.floens.chan.ui.controller;
 import android.content.Context;
 import android.view.View;
 import android.widget.FrameLayout;
-import android.widget.ImageView;
 
 import org.floens.chan.R;
 import org.floens.chan.controller.NavigationController;
+import org.floens.chan.core.model.PostImage;
 import org.floens.chan.ui.toolbar.Toolbar;
 import org.floens.chan.utils.AndroidUtils;
 
+import java.util.List;
+
 public class ImageViewerNavigationController extends NavigationController {
     private ImageViewerController imageViewerController;
 
@@ -27,15 +29,16 @@ public class ImageViewerNavigationController extends NavigationController {
 
         toolbar.setCallback(this);
 
-        imageViewerController = new ImageViewerController(context);
+        imageViewerController = new ImageViewerController(context, toolbar);
         pushController(imageViewerController, false);
     }
 
-    public void setImage(final ImageViewerController.Callback callback, final ImageView startImageView) {
+    public void showImages(final List<PostImage> images, final int index, final ImageViewerController.Callback callback) {
         AndroidUtils.waitForMeasure(imageViewerController.view, new AndroidUtils.OnMeasuredCallback() {
             @Override
             public boolean onMeasured(View view) {
-                imageViewerController.startPreviewInTransition(callback, startImageView);
+                imageViewerController.setCallback(callback);
+                imageViewerController.getPresenter().showImages(images, index);
                 return true;
             }
         });

Clover/app/src/main/java/org/floens/chan/ui/controller/ThreadController.java

@@ -25,11 +25,10 @@ public abstract class ThreadController extends Controller implements ThreadLayou
     @Override
     public void showImages(List<PostImage> images, int index, final ImageView thumbnail) {
         presentingImageView = thumbnail;
-        presentingImageView.setVisibility(View.INVISIBLE);
 
         final ImageViewerNavigationController imageViewerNavigationController = new ImageViewerNavigationController(context);
         presentController(imageViewerNavigationController, false);
-        imageViewerNavigationController.setImage(this, thumbnail);
+        imageViewerNavigationController.showImages(images, index, this);
     }
 
     @Override
@@ -37,6 +36,10 @@ public abstract class ThreadController extends Controller implements ThreadLayou
         return presentingImageView;
     }
 
+    public void onPreviewCreate(ImageViewerController imageViewerController) {
+        presentingImageView.setVisibility(View.INVISIBLE);
+    }
+
     @Override
     public void onPreviewDestroy(ImageViewerController imageViewerController) {
         presentingImageView.setVisibility(View.VISIBLE);

Clover/app/src/main/java/org/floens/chan/ui/fragment/ImageViewFragment.java

@@ -40,8 +40,8 @@ import org.floens.chan.core.settings.ChanSettings;
 import org.floens.chan.core.model.Post;
 import org.floens.chan.ui.activity.ImageViewActivity;
 import org.floens.chan.ui.adapter.ImageViewAdapter;
-import org.floens.chan.ui.view.ThumbnailImageView;
-import org.floens.chan.ui.view.ThumbnailImageView.ThumbnailImageViewCallback;
+import org.floens.chan.ui.view.MultiImageView;
+import org.floens.chan.ui.view.MultiImageView.Callback;
 import org.floens.chan.utils.AndroidUtils;
 import org.floens.chan.utils.ImageSaver;
 
@@ -49,11 +49,11 @@ import java.io.File;
 
 import static org.floens.chan.utils.AndroidUtils.dp;
 
-public class ImageViewFragment extends Fragment implements ThumbnailImageViewCallback {
+public class ImageViewFragment extends Fragment implements Callback {
     private Context context;
     private ImageViewActivity activity;
 
-    private ThumbnailImageView imageView;
+    private MultiImageView imageView;
 
     private Post post;
     private boolean showProgressBar = true;
@@ -83,7 +83,7 @@ public class ImageViewFragment extends Fragment implements ThumbnailImageViewCal
         } else {
             context = inflater.getContext();
 
-            imageView = new ThumbnailImageView(context);
+            imageView = new MultiImageView(context);
             imageView.setCallback(this);
             int padding = getResources().getDimensionPixelSize(R.dimen.image_view_padding);
             imageView.setPadding(padding, padding, padding, padding);
@@ -272,7 +272,7 @@ public class ImageViewFragment extends Fragment implements ThumbnailImageViewCal
         context.startActivity(Intent.createChooser(intent, context.getString(R.string.action_share)));
     }
 
-    public void onVideoError(File video) {
+    public void onVideoError(MultiImageView view, File video) {
         if (ChanSettings.getVideoErrorIgnore()) {
             Toast.makeText(context, R.string.image_open_failed, Toast.LENGTH_SHORT).show();
         } else {
@@ -324,7 +324,7 @@ public class ImageViewFragment extends Fragment implements ThumbnailImageViewCal
     }
 
     @Override
-    public void onTap() {
+    public void onTap(MultiImageView view) {
         if (tapToLoad) {
             if (loaded) {
                 activity.finish();
@@ -337,12 +337,12 @@ public class ImageViewFragment extends Fragment implements ThumbnailImageViewCal
     }
 
     @Override
-    public void setProgress(boolean progress) {
+    public void setProgress(MultiImageView view, boolean progress) {
         showProgressBar(progress);
     }
 
     @Override
-    public void setLinearProgress(long current, long total, boolean done) {
+    public void setLinearProgress(MultiImageView view, long current, long total, boolean done) {
         progressCurrent = current;
         progressTotal = total;
         progressDone = done;
@@ -350,7 +350,7 @@ public class ImageViewFragment extends Fragment implements ThumbnailImageViewCal
     }
 
     @Override
-    public void onVideoLoaded() {
+    public void onVideoLoaded(MultiImageView view) {
         videoSetIconToPause = true;
         activity.invalidateActionBar();
     }

Clover/app/src/main/java/org/floens/chan/ui/view/MultiImageView.java

@@ -30,13 +30,13 @@ import android.widget.ImageView;
 import android.widget.Toast;
 import android.widget.VideoView;
 
-import com.android.volley.Request;
 import com.android.volley.VolleyError;
 import com.android.volley.toolbox.ImageLoader.ImageContainer;
 import com.koushikdutta.async.future.Future;
 
 import org.floens.chan.ChanApplication;
 import org.floens.chan.R;
+import org.floens.chan.core.model.PostImage;
 import org.floens.chan.core.settings.ChanSettings;
 import org.floens.chan.utils.AndroidUtils;
 import org.floens.chan.utils.FileCache;
@@ -48,34 +48,28 @@ import java.io.IOException;
 import pl.droidsonroids.gif.GifDrawable;
 import pl.droidsonroids.gif.GifImageView;
 
-public class ThumbnailImageView extends LoadView implements View.OnClickListener {
-    private static final String TAG = "ThumbnailImageView";
+public class MultiImageView extends LoadView implements View.OnClickListener {
+    private static final String TAG = "MultiImageView";
 
-    private ThumbnailImageViewCallback callback;
-
-    /**
-     * Max amount to scale the image inside the view
-     */
-    private final float maxScale = 3f;
+    private PostImage postImage;
+    private Callback callback;
 
     private boolean thumbnailNeeded = true;
 
-    private Request<?> imageRequest;
-    private Future<?> ionRequest;
+    private Future<?> request;
     private VideoView videoView;
-    private GifDrawable gifDrawable;
 
-    public ThumbnailImageView(Context context) {
+    public MultiImageView(Context context) {
         super(context);
         init();
     }
 
-    public ThumbnailImageView(Context context, AttributeSet attrs) {
+    public MultiImageView(Context context, AttributeSet attrs) {
         super(context, attrs);
         init();
     }
 
-    public ThumbnailImageView(Context context, AttributeSet attrs, int defStyleAttr) {
+    public MultiImageView(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
         init();
     }
@@ -84,10 +78,21 @@ public class ThumbnailImageView extends LoadView implements View.OnClickListener
         setOnClickListener(this);
     }
 
-    public void setCallback(ThumbnailImageViewCallback callback) {
+    public void bindPostImage(PostImage postImage, Callback callback) {
+        this.postImage = postImage;
         this.callback = callback;
     }
 
+    public void loadLowRes() {
+    }
+
+    public void loadHighRes() {
+
+    }
+
+    public void setCallback(Callback callback) {
+        this.callback = callback;
+    }
 
     public void setThumbnail(String thumbnailUrl) {
         if (getWidth() == 0 || getHeight() == 0) {
@@ -120,15 +125,15 @@ public class ThumbnailImageView extends LoadView implements View.OnClickListener
             return;
         }
 
-        callback.setProgress(true);
-        ionRequest = ChanApplication.getFileCache().downloadFile(getContext(), imageUrl, new FileCache.DownloadedCallback() {
+        callback.setProgress(this, true);
+        request = ChanApplication.getFileCache().downloadFile(getContext(), imageUrl, new FileCache.DownloadedCallback() {
             @Override
             public void onProgress(long downloaded, long total, boolean done) {
                 if (done) {
 //                    callback.setLinearProgress(0, 0, true);
                     thumbnailNeeded = false;
                 } else {
-                    callback.setLinearProgress(downloaded, total, false);
+                    callback.setLinearProgress(MultiImageView.this, downloaded, total, false);
                 }
             }
 
@@ -151,7 +156,7 @@ public class ThumbnailImageView extends LoadView implements View.OnClickListener
     public void setBigImageFile(File file) {
         final CustomScaleImageView image = new CustomScaleImageView(getContext());
         image.setImageFile(file.getAbsolutePath());
-        image.setOnClickListener(ThumbnailImageView.this);
+        image.setOnClickListener(MultiImageView.this);
 
         addView(image);
 
@@ -160,7 +165,7 @@ public class ThumbnailImageView extends LoadView implements View.OnClickListener
             public void onInit() {
                 removeAllViews();
                 addView(image);
-                callback.setProgress(false);
+                callback.setProgress(MultiImageView.this, false);
             }
 
             @Override
@@ -176,16 +181,16 @@ public class ThumbnailImageView extends LoadView implements View.OnClickListener
             return;
         }
 
-        callback.setProgress(true);
-        ionRequest = ChanApplication.getFileCache().downloadFile(getContext(), gifUrl, new FileCache.DownloadedCallback() {
+        callback.setProgress(this, true);
+        request = ChanApplication.getFileCache().downloadFile(getContext(), gifUrl, new FileCache.DownloadedCallback() {
             @Override
             public void onProgress(long downloaded, long total, boolean done) {
                 if (done) {
-                    callback.setProgress(false);
-                    callback.setLinearProgress(0, 0, true);
+                    callback.setProgress(MultiImageView.this, false);
+                    callback.setLinearProgress(MultiImageView.this, 0, 0, true);
                     thumbnailNeeded = false;
                 } else {
-                    callback.setLinearProgress(downloaded, total, false);
+                    callback.setLinearProgress(MultiImageView.this, downloaded, total, false);
                 }
             }
 
@@ -227,16 +232,16 @@ public class ThumbnailImageView extends LoadView implements View.OnClickListener
     }
 
     public void setVideo(String videoUrl) {
-        callback.setProgress(true);
-        ionRequest = ChanApplication.getFileCache().downloadFile(getContext(), videoUrl, new FileCache.DownloadedCallback() {
+        callback.setProgress(this, true);
+        request = ChanApplication.getFileCache().downloadFile(getContext(), videoUrl, new FileCache.DownloadedCallback() {
             @Override
             public void onProgress(long downloaded, long total, boolean done) {
                 if (done) {
-                    callback.setProgress(false);
-                    callback.setLinearProgress(0, 0, true);
+                    callback.setProgress(MultiImageView.this, false);
+                    callback.setLinearProgress(MultiImageView.this, 0, 0, true);
                     thumbnailNeeded = false;
                 } else {
-                    callback.setLinearProgress(downloaded, total, false);
+                    callback.setLinearProgress(MultiImageView.this, downloaded, total, false);
                 }
             }
 
@@ -282,13 +287,13 @@ public class ThumbnailImageView extends LoadView implements View.OnClickListener
                 @Override
                 public void onPrepared(MediaPlayer mp) {
                     mp.setLooping(true);
-                    callback.onVideoLoaded();
+                    callback.onVideoLoaded(MultiImageView.this);
                 }
             });
             videoView.setOnErrorListener(new MediaPlayer.OnErrorListener() {
                 @Override
                 public boolean onError(MediaPlayer mp, int what, int extra) {
-                    callback.onVideoError(file);
+                    callback.onVideoError(MultiImageView.this, file);
 
                     return true;
                 }
@@ -308,45 +313,40 @@ public class ThumbnailImageView extends LoadView implements View.OnClickListener
 
     public void onError() {
         Toast.makeText(getContext(), R.string.image_preview_failed, Toast.LENGTH_SHORT).show();
-        callback.setProgress(false);
+        callback.setProgress(this, false);
     }
 
     public void onNotFoundError() {
         Toast.makeText(getContext(), R.string.image_not_found, Toast.LENGTH_LONG).show();
-        callback.setProgress(false);
+        callback.setProgress(this, false);
     }
 
     public void onOutOfMemoryError() {
         Toast.makeText(getContext(), R.string.image_preview_failed_oom, Toast.LENGTH_SHORT).show();
-        callback.setProgress(false);
+        callback.setProgress(this, false);
     }
 
     public void cancelLoad() {
-        if (imageRequest != null) {
-            imageRequest.cancel();
-            imageRequest = null;
-        }
-
-        if (ionRequest != null) {
-            ionRequest.cancel(true);
+        if (request != null) {
+            request.cancel(true);
         }
     }
 
     @Override
     public void onClick(View v) {
-        callback.onTap();
+        callback.onTap(this);
     }
 
-    public static interface ThumbnailImageViewCallback {
-        public void onTap();
+    public static interface Callback {
+        public void onTap(MultiImageView multiImageView);
 
-        public void setProgress(boolean progress);
+        public void setProgress(MultiImageView multiImageView, boolean progress);
 
-        public void setLinearProgress(long current, long total, boolean done);
+        public void setLinearProgress(MultiImageView multiImageView, long current, long total, boolean done);
 
-        public void onVideoLoaded();
+        public void onVideoLoaded(MultiImageView multiImageView);
 
-        public void onVideoError(File video);
+        public void onVideoError(MultiImageView multiImageView, File video);
     }
 
     public static class NoMusicServiceCommandContext extends ContextWrapper {

Clover/app/src/main/java/org/floens/chan/ui/view/ViewPagerAdapter.java

@@ -0,0 +1,25 @@
+package org.floens.chan.ui.view;
+
+import android.support.v4.view.PagerAdapter;
+import android.view.View;
+import android.view.ViewGroup;
+
+import org.floens.chan.utils.AndroidUtils;
+
+public abstract class ViewPagerAdapter extends PagerAdapter {
+    @Override
+    public Object instantiateItem(ViewGroup container, int position) {
+        return getView(position);
+    }
+
+    @Override
+    public void destroyItem(ViewGroup container, int position, Object object) {
+        AndroidUtils.removeFromParentView((View) object);
+    }
+
+    public boolean isViewFromObject(View view, Object object) {
+        return view == object;
+    }
+
+    public abstract View getView(int position);
+}

Clover/app/src/main/res/layout/controller_image_viewer.xml

@@ -4,8 +4,14 @@
     android:layout_height="match_parent">
 
     <org.floens.chan.ui.view.ClippingImageView
-        android:id="@+id/image"
+        android:id="@+id/preview_image"
         android:layout_width="match_parent"
         android:layout_height="match_parent" />
 
+    <ViewPager
+        android:id="@+id/pager"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+
+
 </FrameLayout>

Clover/app/src/main/res/layout/controller_navigation_image_viewer.xml

@@ -25,7 +25,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
         android:id="@+id/toolbar"
         android:layout_width="match_parent"
         android:layout_height="56dp"
-        android:background="@color/primary"
+        android:background="#e9000000"
         android:elevation="4dp" />
 
     <FrameLayout